Exemple #1
0
    def __init__(self):
        
        self.start_time = 0
        self.cur_time = 0
        
        self.lastAngle = 0
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw', )
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.taxi_driver = TaxiDriver()

        self.angle_threshold = 10 #minus abs of angle while steering
        self.angle_is_go = 10		# < 2, go straight
        self.angle_change_speed = 15	# angle > 5, change speed (lower)

        self.curve_radius = 10000 #230

        self.is_stop = False

        self.lastObs = [-1, -1, -1]
        
        self.obs_list_num = 5
        self.obs_l_list = []
        self.obs_m_list = []
        self.obs_r_list = []
Exemple #2
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.value_filter = MovingAverage(5)
     self.obs_filter = MovingAverage(5)
     self.stop_time = None
Exemple #3
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 def __init__(self):
     self.start_time = time.time()
     self.angle = 0
     self.speed = 0
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
Exemple #4
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.trafficlight = Trafficlight('/usb_cam/image_raw')
     self.savedata = [0]
     self.save_obs = 130
Exemple #5
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    def __init__(self):

        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.left = 0
        self.right = 640
        self.angle = 0
Exemple #6
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.imu = ImuRead('diagnostics')
     self.before = [0, 0, 0]
     self.before_sonic = 0
     self.startTime = time.time()
Exemple #7
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.imu = ImuRead('/diagnostics')
     self.b_l = 0
     self.b_r = 0
     self.origin = False
Exemple #8
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.slow_time = time.time()
     self.prev_dis = 100
     self.prev_l = []
     self.prev_m = []
     self.prev_r = []
     self.MAX_SIZE = 3
Exemple #9
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.imu = ImuRead('/diagnostics')
     self.information = {
         "speed": -1,
         "signal": "",
         "=>": "",
         "pitch": -1,
         "roll": -1,
         "yaw": -1
     }
Exemple #10
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class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        left, right = self.line_detector.direction_info
        self.line_detector.show_image()
        angle = self.steer(left, right)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        mid = (left + right) // 2
        angle = (mid - 320) // 1.7
        angle = max(-30, angle) if angle > 0 else min(30, angle)
        print(angle)
        return angle

    def accelerate(self, angle, left, mid, right):
        # if min(left, mid, right) < 50:
        #     speed = 0
        if angle <= -10 or angle >= 10:
            speed = 22
        else:
            speed = 33
        print(speed)
        return speed

    def exit(self):
        print('finished')
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')

    def trace(self):
        distance = self.obstacle_detector.get_distance()
        left, right = self.line_detector.direction_info
        self.line_detector.show_image()
        angle = self.steer(left, right)
        speed = self.accelerate(angle, distance)
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        mid = (left + right) // 2
        angle = float(mid - 320) / 1.7
        print("angle:", angle)
        return angle

    def accelerate(self, angle, distance):
        if distance < 140 and angle >= -14 and angle <= 14 and time.time(
        ) - start_time >= 50:
            print("stop!")
            speed = 0
        elif angle <= -12 or angle >= 12:
            speed = 38
        else:
            speed = 45
        print("speed : ", speed)
        return speed

    def exit(self):
        print('finished')
Exemple #12
0
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.obstacledetector = ObstacleDetector('/ultrasonic')

    def trace(self):
        left, right = self.line_detector.get_left_right()
        angle = self.steer(left, right)
        speed = self.accelerate(angle)
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        mid = (left + right) // 2 - 320
        if abs(mid) > 40:
            angle = mid // 1.5
        else:
            angle = mid // 3.5
        angle = max(-50, angle) if angle < 0 else min(50, angle)
        return angle

    def accelerate(self, angle):
        left, mid, right = self.obstacledetector.get_distance()
        if (left < 140 and mid < 100 and left > 0 and mid > 0):
            if left + mid < 130:
                exit()
            return 0
        return 50

    def exit(self):
        print('finished')
Exemple #13
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 def __init__(self):
     rospy.init_node('xycar_driver')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.traffic_light_detector = TrafficLightDetector('/usb_cam/image_raw')
     self.vehicle_breaker_detector = VehicleBreakerDetector('/usb_cam/image_raw')
     self.bus_stop_detector = BusStopDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
     self.slow_time = time.time()
     self.prev_dis = 100
     self.prev_l = []
     self.prev_m = []
     self.prev_r = []
     self.MAX_SIZE = 3
     self.bus_stop_time = time.time()
     self.bus_ignore_time = -1
     self.bus_data = []
Exemple #14
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class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.driver = MotorDriver('/xycar_motor_msg')
    self.obstacle_detector = ObstacleDetector('/ultrasonic')
    
    def trace(self):
    obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r = self.line_detector.detect_lines()
        self.line_detector.show_images(line_l, line_r)
        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)
    self.driver.drive(angle + 90, speed + 90)
    
    def steer(self, left, right):
    if left == -1:
        if 320 < right < 390:
        angle = -50
        else:
        angle = (550 - right) / (-3)
    elif right == -1:
        if 250 < left < 320:
        angle = 50
        else:
        angle = (left - 90) / 3
    else:
        angle = 0
    return angle
    
    def accelerate(self, angle, left, mid, right):
    print(mid)
    
    if mid < 40:
        speed = 0
        return speed

    if angle <= -40 or angle >= 40:
        speed = 30
    elif angle <= -25 or angle >= 25:
        speed = 40
    else:
        speed = 50

    return speed
    
    def exit(self):
        print('finished')
        
if __name__ == '__main__':
    car = AutoDrive()
    time.sleep(3)
    rate = rospy.Rate(10)
    while not rospy.is_shutdown():
        car.trace()
    rate.sleep()
    rospy.on_shutdown(car.exit)
Exemple #15
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class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.imu = ImuRead('/diagnostics')

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r = self.line_detector.detect_lines()
        self.line_detector.show_images(line_l, line_r)
        r, p, y = self.imu.get_data()

        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)
        self.driver.drive(angle + 90, speed + 90)

        print(speed + 90)
        print(r, p, y)

    def steer(self, left, right):
        if left == -1:
            if 320 < right < 390:
                angle = -50
            else:
                angle = (550 - right) / (-3)
        elif right == -1:
            if 250 < left < 320:
                angle = 50
            else:
                angle = (left - 90) / 3
        else:
            angle = 0
        return angle

    def accelerate(self, angle, left, mid, right):
        print(mid)

        if mid < 40:
            speed = 0
            return speed

        if angle <= -40 or angle >= 40:
            speed = 30
        elif angle <= -25 or angle >= 25:
            speed = 40
        else:
            speed = 50

        return speed

    def exit(self):
        print('finished')
Exemple #16
0
class AutoDrive:
    def __init__(self):
        self.start_time = time.time()
        self.angle = 0
        self.speed = 0
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        r, l = self.line_detector.detect_lines()
        self.line_detector.show_images()
        self.angle = self.steer(l, r, self.angle)
        self.speed = self.accelerate(self.angle, obs_m)
        self.driver.drive(self.angle + 90, self.speed + 90)

    def steer(self, l, r, angle):
        mid = (l + r) // 2
        angle = -((320 - mid) // 1.6)

        if mid < 320:
            l = -1
        elif mid > 320:
            r = -1
        else:
            angle = 0
        return angle

    def accelerate(self, angle, l, r):
        speed = 40
        if l == -1 and r == -1:
            speed = 0
        return speed

    def exit(self):
        print('finished')
Exemple #17
0
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.trafficlight = Trafficlight('/usb_cam/image_raw')
        self.savedata = [0]
        self.save_obs = 130

    def trace(self):
        obs_m = self.obstacle_detector.get_distance()
        light = self.trafficlight.found

        if obs_m / 2 >= 30 and int(obs_m) != 0:
            speed = int(obs_m / 2) + 60
            self.save_obs = speed
            print(obs_m)
        else:
            speed = self.save_obs

        l_s, r_s = self.line_detector.run()

        if abs(l_s) >= 0.3 and abs(r_s) >= 0.3:
            if abs(l_s) > 2.5:
                angle = -8
                self.savedata[0] = angle

                #print("little left")
            elif abs(r_s) > 2.5:
                angle = 8
                self.savedata[0] = angle

                #print("little right")
            else:
                angle = 0
                self.savedata[0] = angle

                #print("go")
        elif (l_s == 0) and (r_s == 0):
            angle = self.savedata[0]
            #print("maybe go 111")

        elif (l_s == 0):
            angle = -50
            self.savedata[0] = angle

            #print("left")

        elif (r_s == 0):
            angle = 50
            self.savedata[0] = angle

            #print("right")

        else:
            if abs(l_s) < 0.3:
                angle = 50
                self.savedata[0] = angle

                #print("maybe right")
            elif abs(r_s) < 0.3:
                angle = -50
                self.savedata[0] = angle

                #print("maybe left")
            else:
                angle = self.savedata[0]

                #print("maybe go 222")

        self.sum = (r_s + l_s)

        if not light[0]:
            self.driver.drive(90 + angle, speed)

    def exit(self):
        print('finished')
Exemple #18
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class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.imu = ImuRead('/diagnostics')

        self.angle = 0
        self.speed = 0

    def trace(self):
        redSignal = self.line_detector.trafficLight()
        print(redSignal)
        if redSignal:
            print(redSignal)
            self.forward()
        r, p, y = self.imu.get_data()
        obs_l, obs_m, obs_r, obs_sl, obs_sr, B = self.obstacle_detector.get_distance(
        )
        line_l, line_r = self.line_detector.detect_lines()
        #self.line_detector.show_images(line_l,line_r)
        self.angle = self.steer(line_l, line_r)
        speed = self.accelerate(self.angle, obs_l, obs_m, obs_r, p, obs_sl,
                                obs_sr, B)
        self.driver.drive(self.angle + 90, speed + 90)
        #print(p)
        if (p < -5):
            time.sleep(3)

    def steer(self, left, right):

        if self.angle < 0 and (100 <= left <= 150):
            return self.angle

        self.angle = 0

        if left == -1:
            self.angle = -55

        elif left < 17:
            self.angle = -48
        elif 17 <= left < 50:
            self.angle = -19

        elif left > 130:
            self.angle = 47
        elif 130 >= left > 100:
            self.angle = 18

#print(left)
        return self.angle

    def accelerate(self, angle, left, mid, right, p, side_left, side_right, B):

        if mid < 40 and side_left < 40 and side_right < 40:
            self.backward()

        if p < -5:
            return 0

        if self.speed > 0 and mid == 0:
            return self.speed
        elif (angle <= -25 or angle >= 35):
            self.speed = 37
        else:
            self.speed = 46
        #print(mid)
        return 25

    def exit(self):
        print('finished')

    def backward(self):
        for i in range(2):
            self.driver.drive(90, 90)
            time.sleep(0.1)
            self.driver.drive(90, 60)
            time.sleep(0.1)
        for i in range(50):
            self.driver.drive(35, 70)
            time.sleep(0.1)

    def forward(self):
        for i in range(30):
            self.driver.drive(35, 120)
            time.sleep(0.1)
Exemple #19
0
class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.slow_time = time.time()
        self.prev_dis = 100
        self.prev_l = []
        self.prev_m = []
        self.prev_r = []
        self.MAX_SIZE = 3

    def average(self, L):
        if len(L) == 0:
            return 100
        return sum(L) / len(L)

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_theta, left, right = self.line_detector.detect_lines()
        angle = self.steer(line_theta)
        speed = self.accelerate(line_theta)
        print(line_theta)
        print("left: {} mid: {} right: {}".format(obs_l, obs_m, obs_r))
        cnt = 0
        s = 0
        cos_theta = 0.9
        dis = self.prev_dis
        obs_l *= cos_theta
        obs_r *= cos_theta
        if obs_l != 0:
            if len(self.prev_l) + 1 >= self.MAX_SIZE:
                self.prev_l.pop(0)
            self.prev_l.append(obs_l)
            if obs_l <= 70:
                cnt += 1
            s += obs_l
        if obs_m != 0:
            if len(self.prev_m) + 1 >= self.MAX_SIZE:
                self.prev_m.pop(0)
            self.prev_m.append(obs_m)
            if obs_m <= 70:
                cnt += 2
            s += obs_m
        if obs_r != 0:
            if len(self.prev_r) + 1 >= self.MAX_SIZE:
                self.prev_r.pop(0)
            self.prev_r.append(obs_r)
            if obs_r <= 70:
                cnt += 1
            s += obs_r
        if cnt >= 2:
            dis = s / cnt
        start_time = time.time()
        if ((cnt >= 3) or (obs_m != 0 and obs_m <= 70 and self.average(self.prev_m) <= 75)) or (
                self.average(self.prev_l) <= 75 and self.average(self.prev_m) <= 75 and self.average(
                self.prev_r) <= 75):
            if time.time() - start_time > 50:
                for i in range(2):
                    self.driver.drive(90, 90)
                    time.sleep(0.1)
                    self.driver.drive(90, 60)
                    time.sleep(0.1)
                self.driver.drive(90, 90)
                time.sleep(5)
        else:
            self.driver.drive(angle + 90 + 5.7, speed)

        if cnt >= 2:
            self.prev_dis = dis

    def steer(self, theta):
        threshold = 2.0
        if -0.8 <= theta <= 0.8:
            threshold = 8.0
        elif -5 <= theta <= 5:
            threshold = 3.0
        elif -10 <= theta <= 10:
            threshold = 2.3
        elif -15 <= theta <= 15:
            if theta < 0:
                threshold = 2.0
            else:
                threshold = 2.5
        else:
            if theta < 0:
                threshold = 2.5
            else:
                threshold = 3.5
        angle = theta * threshold

        return angle

    def accelerate(self, theta):
        K = 135

        if abs(theta) > 4:
            self.slow_time = time.time() + 2

        if time.time() < self.slow_time:
            K = 130

        speed = K  # - min(abs(theta)/2, 10)

        return speed

    def exit(self):
        print('finished')
Exemple #20
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class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r = self.line_detector.detect_lines()
        self.line_detector.show_images(line_l, line_r)
        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        mid = (left + right) // 2
        angle = 0
        if 600 <= right < 650:
            if mid > 360:
                angle -= 20
            else:
                angle += 0
        elif 510 <= right < 600:
            angle -= 30
            if mid < 280:
                angle -= 10
        else:
            angle -= 40

        if -10 <= left < 65:
            if mid < 280:
                angle += 20
            else:
                angle += 0
        elif 65 <= left < 120:
            angle += 30
            if mid > 360:
                angle += 10
        else:
            angle += 40

        print(
            "reft",
            left,
            "mid",
            mid,
            "right",
            right,
        )
        print("")

        return angle

    def accelerate(self, angle, left, mid, right):
        if min(left, mid, right) < 50:
            speed = 0
        if angle < -20 or angle > 20:
            speed = 20
        else:
            speed = 30
        return speed

    def exit(self):
        print('finished')
Exemple #21
0
class AutoDrive: 
    def __init__(self):
        
        self.start_time = 0
        self.cur_time = 0
        
        self.lastAngle = 0
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw', )
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.taxi_driver = TaxiDriver()

        self.angle_threshold = 10 #minus abs of angle while steering
        self.angle_is_go = 10		# < 2, go straight
        self.angle_change_speed = 15	# angle > 5, change speed (lower)

        self.curve_radius = 10000 #230

        self.is_stop = False

        self.lastObs = [-1, -1, -1]
        
        self.obs_list_num = 5
        self.obs_l_list = []
        self.obs_m_list = []
        self.obs_r_list = []

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        #print(obs_l, obs_m, obs_r)  

        self.lastObs = [obs_l, obs_m, obs_r] 	

        angle = self.steer(self.line_detector.detect_angle())
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)

        #print('Angle:', angle, ' Speed:', speed)
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, _angle):
        if _angle == -99:
            return self.lastAngle #lastangle

        angle_ret = _angle
        angle_ret = max(-50, min(angle_ret, 50))

        angle_weight = self.curve_radius - math.sqrt(self.curve_radius * self.curve_radius - angle_ret * angle_ret)
        #print(angle_weight)
        
        if angle_ret > 0: 
            angle_ret -= angle_weight 
        else:
            angle_ret += angle_weight
        
        self.lastAngle = angle_ret
        return angle_ret

    def accelerate(self, angle, left, mid, right):
        if len(self.obs_l_list) < 5:
            if left != 0:
                self.obs_l_list.append(left)
            if mid != 0:
                self.obs_m_list.append(mid)
            if right != 0:
                self.obs_r_list.append(right)
        else:
            if left != 0:
                self.obs_l_list = self.obs_l_list[:3]
                self.obs_l_list.append(left)
            if mid != 0:
                self.obs_m_list = self.obs_m_list[:3]
                self.obs_r_list.append(mid)
            if right != 0:   
                self.obs_r_list = self.obs_r_list[:3]
                self.obs_r_list.append(right) 
        
        #left = sum(self.obs_l_list) / len(self.obs_l_list)
        #mid = sum(self.obs_m_list) / len(self.obs_m_list)
        #right = sum(self.obs_r_list) / len(self.obs_r_list)
        
        if self.start_time == 0:
            self.start_time = time.time()
        self.cur_time = time.time()
        #print(self.cur_time - self.start_time)
        
        if mid < 90 and ((self.cur_time - self.start_time) >= 73.5):
            self.is_stop = True
            #print('stop')
        else:
            pass
            
        if self.is_stop:
            return 0
            
        if angle < -self.angle_change_speed or angle > self.angle_change_speed:
            speed = 41
        else:
            speed = 50
            
        if self.taxi_driver.drive == False:
            return 0
        
        return speed
        
    def taxi(self):
        self.taxi_driver.procFind(self.line_detector.cam_view)
        self.taxi_driver.procPickup()
        self.taxi_driver.procDrive()
        self.taxi_driver.procArrive(self.line_detector.cam_view)
        self.taxi_driver.procPay()
    
    def exit(self):
        print('finished')
Exemple #22
0
 def __init__(self):
     rospy.init_node('autodrive')
     self.line_detector = LineDetector('/usb_cam/image_raw')
     self.obstacle_detector = ObstacleDetector('/ultrasonic')
     self.driver = MotorDriver('/xycar_motor_msg')
Exemple #23
0
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.imu = ImuRead('/diagnostics')
        self.b_l = 0
        self.b_r = 0
        self.origin = False

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r = self.line_detector.detect_lines()
        self.line_detector.show_images(line_l, line_r)
        r, p = self.imu.get_data()
        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r, r, p)
        if self.origin and p > -6.5:
            speed = -7
            angle = 0
        elif ((r > 4 and r < 175.0) or
              (r < -4 and r > -175.0)) and self.origin == False:
            speed = 28  # 30
            angle = -5
        elif p <= -6.5 and p > -7.5:
            speed = -1
            angle = 0
        elif p <= -7.5 and p > -8.5:
            speed = 24
            angle = 0
        elif p <= -8.5 and p >= -15:
            speed = 26  # 28
            angle = 0
        elif p < -15:
            speed = 34.5
            angle = 0
            self.origin = True
        '''
        elif (r>0 and r<175.0) or (r<0 and r>-175.0):
               speed = 30
           angle = -5
        elif line_l == -2:
           speed = 0
           angle = 0
           print("it stopped")
        '''
        print("angle-speed:", angle, speed)
        print("roll:", r, p)
        # print('R (%.1f) P (%.1f), Y (%.1f)' % (r, p, y))
        self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        if left == -1 and right == 641:
            left = self.b_l
            right = self.b_r
        mid = (left + right) // 2

        if mid < 250:
            angle = -82
        elif mid >= 250 and mid < 260:
            angle = -70
        elif mid >= 260 and mid < 270:
            angle = -40
        # angle - -55
        elif mid >= 270 and mid < 280:
            # angle = -50
            angle = -30
        elif mid >= 280 and mid < 285:
            angle = -10
        elif mid > 390:
            angle = 73
        elif mid >= 380 and mid < 390:
            angle = 50
        elif mid >= 370 and mid < 380:
            angle = 38
        elif mid >= 360 and mid < 370:
            angle = 28
        elif mid >= 355 and mid < 360:
            angle = 1
        else:
            angle = 0

        self.b_l = left
        self.b_r = right

        print(self.b_l, self.b_r)
        print(left, right)

        return angle

    def accelerate(self, angle, left, mid, right, roll, pitch):
        after = time.time()
        print(mid, after - now)
        # if mid < 90: #and (after-now) > 70.5:
        #   speed = 20
        # if mid < 85: #and (after-now) > 70.5:
        #   speed = 12
        # if mid < 80: #and (after-now) > 70.5:
        #   speed = 7
        # if mid < 85: #and (after-now) > 70.5:
        #   speed = 4
        if mid < 95 and (after - now) < 20.5:
            speed = 0
        elif angle == 10 or angle == -10:
            speed = 32
        elif angle < -30 or angle > 30:
            speed = 34
        else:
            speed = 35

        return speed

    def exit(self):
        print('finished')
Exemple #24
0
class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.value_filter = MovingAverage(5)
        self.obs_filter = MovingAverage(5)
        self.stop_time = None

    def trace(self):
        line_l, line_r = self.line_detector.detect_lines()
        left, mid, right = self.obstacle_detector.get_distance()
        red, green, yellow = self.line_detector.detect_lights()
        self.line_detector.show_images(line_l, line_r)
        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, mid, red, green, yellow)

        if speed == 0:
            if not self.stop_time == None && time.time() - self.stop_time >= 10:
                angle = 45
                speed = 40
            else:
                self.stop_time = time.time()
        else:
            self.stop_time = None

        if angle != None:
            self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        mid = (left + right) // 2
        self.value_filter.add_sample(mid)

        if len(self.value_filter.data) >= 3:

            if 280 < mid < 360:
                angle = 0
                print(angle)
            else:
                angle = int((self.value_filter.get_wmm() - 320) / 1.5)
                print(angle)

            return angle

    def accelerate(self, angle, mid, red, green, yellow):
        if angle < -50 or angle > 50:
            speed = 40
        else:
            speed = 40

        self.obs_filter.add_sample(mid)
        if len(self.obs_filter.data) >= 3:
            if self.obs_filter.get_wmm() <= 50:
                speed = 0

        if red:
            speed = 0
        elif yellow:
            speed = 25
        elif green:
            speed = 40

        return speed

    def exit(self):
        print('finished')
Exemple #25
0
class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.traffic_light_detector = TrafficLightDetector('/usb_cam/image_raw')
        self.vehicle_breaker_detector = VehicleBreakerDetector('/usb_cam/image_raw')
        self.bus_stop_detector = BusStopDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.slow_time = time.time()
        self.prev_dis = 100
        self.prev_l = []
        self.prev_m = []
        self.prev_r = []
        self.MAX_SIZE = 3
        self.bus_stop_time = time.time()
        self.bus_ignore_time = -1
        self.bus_data = []

    def average(self, L):
        if len(L) == 0:
            return 100
        return sum(L) / len(L)

    def trace(self):
        k = 500
        
        if len(self.bus_data) > 4:
            self.bus_data.pop(0)
        self.bus_data.append((self.bus_stop_detector.detect()))
        bus_stop, stop_m, stop_M, people_cnt = 0, [0, 0], [0, 0], 0 #self.bus_data[-1]
        for data in self.bus_data:
            bus_stop += 1 if data[0] else 0
            stop_m[0] += data[1][0][0]
            stop_m[1] += data[1][0][1]
            stop_M[0] += data[1][1][0]
            stop_M[1] += data[1][1][1]
            people_cnt += data[2]
        bus_stop = bus_stop > len(self.bus_data) // 2
        stop_m[0] //= len(self.bus_data)
        stop_m[1] //= len(self.bus_data)
        stop_M[0] //= len(self.bus_data)
        stop_M[1] //= len(self.bus_data)
        people_cnt /= len(self.bus_data)
        '''
        if bus_stop and (stop_M[0] - stop_m[0]) * (stop_M[1] - stop_m[1]) > (208 - 164) * (100 - 56):
            time.sleep(3.0)
            self.driver.drive(90, 90)
            time.sleep(people_cnt * 2.0)
        '''
        
        if bus_stop and (stop_M[0] - stop_m[0]) * (stop_M[1] - stop_m[1]) > (208 - 164) * (100 - 56):
            if self.bus_stop_time < time.time():
                #time.sleep(2.0)
                #self.bus_stop_time = time.time() + 2.0
                pass
            if people_cnt > 0 and self.bus_ignore_time < time.time():
                self.bus_stop_time = time.time() + 2.0
            elif self.bus_stop_time > time.time():
                pass #self.bus_ignore_time = time.time() + 5.0
        
        print(bus_stop, stop_m, stop_M, people_cnt)
        if self.bus_stop_time > time.time() and self.bus_ignore_time < time.time():
            self.driver.drive(90, 90)
        else:
            self.driver.drive(90, 115)
        return

        breaker_ret, cnt = self.vehicle_breaker_detector.detect()

        print(cnt)
        if breaker_ret:
            self.driver.drive(90,90)
        else:
            self.driver.drive(90,115)
        return
        
        light_color = self.traffic_light_detector.detect()
        print(light_color)
        if light_color == 'green':
            self.driver.drive(90, 115)
        elif light_color == 'orange':
            self.driver.drive(90, 110)
        elif light_color == 'red':
            self.driver.drive(90, 90)

        return
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_theta,left,right = self.line_detector.detect_lines()
        line_theta += 0.4
        angle = self.steer(line_theta,left,right)
        speed = self.accelerate(angle,line_theta,left,right)
        print(line_theta)
        #print(line_theta, left, right)
        print("left: {} mid: {} right: {}".format(obs_l,obs_m,obs_r))
        cnt = 0
        s = 0
        cos_theta = 0.9
        dis = self.prev_dis
        obs_l *= cos_theta
        obs_r *= cos_theta
        if obs_l != 0:
            if len(self.prev_l) + 1 >= self.MAX_SIZE:
                self.prev_l.pop(0)
            self.prev_l.append(obs_l)
            if obs_l <= 70:
                cnt +=1
            s += obs_l
        if obs_m != 0:
            if len(self.prev_m) + 1 >= self.MAX_SIZE:
                self.prev_m.pop(0)
            self.prev_m.append(obs_m)
            if obs_m <= 70:
                cnt +=2
            s += obs_m
        if obs_r != 0:
            if len(self.prev_r) + 1 >= self.MAX_SIZE:
                self.prev_r.pop(0)
            self.prev_r.append(obs_r)
            if obs_r <=70:
                cnt +=1
            s += obs_r
        if cnt >=2:
            dis = s/cnt

        if ((cnt >=3) or (obs_m != 0 and obs_m <=70 and self.average(self.prev_m) <= 75)) or (self.average(self.prev_l) <= 75 and self.average(self.prev_m) <= 75 and self.average(self.prev_r) <=75):
            for i in range(2):
                self.driver.drive(90,90)
                time.sleep(0.1)
                self.driver.drive(90,60)
                time.sleep(0.1)
            self.driver.drive(90,90)
            time.sleep(5)
        else:
            self.driver.drive(angle + 90+ 2.77, speed)

        if cnt >=2:
            self.prev_dis = dis

    def steer(self, theta, left, right):
        """
        weight = 0.0

        if left == -1:
            weight = 0.0

        elif right == -1:
            weight = 0.0
        else:
            mid = (left + right) / 2
            diff = 55-mid
            
            if abs(diff) < 3:
                weight = 0.0
            # car is at right
            elif diff < 0:
                weight = -1.0
            elif diff > 0:
                weight = 1.0
        """
        K = 0.0
        if -0.8 <= theta <= 0.8:
            K = 8.0
        elif -5 <= theta <= 5:
            K = 2.0
        elif -10 <= theta <= 10:
            K = 2.3
        elif -15 <= theta <= 15:
            '''
            if theta < 0:
                if theta > -10:
                    K = 1.86
                else:
                    K = 1.4
            else:
                K = 1.75
            '''
            if theta < 0:
                K = 1.5
            else:
                K = 2.0
        else: #elif abs(theta) < 30:
            if theta < 0:
                K = 3.0
            else:
                K = 3.0
        #else:
        #    K = 
        '''
        elif theta >= 20:
            K = 3.0
        elif theta <= -20:
            K = 2.1
        else:
            K = 1.5
        '''	
        """
        if theta > 0:
            K = 1.75
        else:
            K = 1.6
        """
        angle = theta * K

        return angle #+ (weight * 15)
        #return angle

    def accelerate(self, angle, theta, left, right):
        K = 135
        
        if abs(theta) > 4:
            self.slow_time = time.time() + 2

        if time.time() < self.slow_time:
            K = 130
        
        speed = K# - min(abs(theta)/2, 10) 

        return speed

    def exit(self):
        print('finished')
Exemple #26
0
class AutoDrive:
    def __init__(self):

        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.left = 0
        self.right = 640
        self.angle = 0

    # 장애물, 차선 인식하여 조향각, 속도 결정, 모터 제어 메시지 발생
    def trace(self):
        if self.line_detector.parkingMatch() == True:
            self.parking()
        else:

            obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
            left, right = self.line_detector.detect_lines()
            self.line_detector.show_images(left, right)  # 디버깅위한 화면 표시
            angle = self.steer(left, right)
            speed = self.accelerate(angle, obs_l, obs_m,
                                    obs_r)  # 조향각과 속도 인자 결정
            self.driver.drive(angle + 90, speed + 90)  # 모터 제어를 위한 메서드 호출

    # 왼쪽/오른쪽 차선 위치에 따라 조향각 결정
    # 가운데 : 0, 오른쪽 : 양수, 왼쪽 : 음수
    def steer(self, left, right):

        angle = 0

        mid = (left + right) // 2

        angle = int((mid - 320) * 0.5)

        if angle >= 30:
            angle = 50

        elif angle <= -30:
            angle = -50

        return angle

    # 조향각, 장애물 거리에 따라 속도 결정 &
    def parking(self):
        parking_0, parking_3, parking_4, parking_6 = self.obstacle_detector.for_parking_distance(
        )
        while parking_6 <= 50:
            for go1 in range(5):
                drive(85, 110)
                if parking_6 >= 50:
                    time.sleep(1)
                    break
                time.sleep(0.1)

        for stop1 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(65, 110)
            time.sleep(0.1)

        for left1 in range(50):
            drive(65, 110)
            if data_0 <= 5:
                time.sleep(1)
                break
            time.sleep(0.1)

        for stop2 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(180, 70)
            time.sleep(0.1)

        for back1 in range(30):
            drive(180, 70)
            if data_3 <= 5:
                time.sleep(1)
                break
            time.sleep(0.1)

        for stop3 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(70, 110)
            time.sleep(0.1)

        for go2 in range(20):
            drive(70, 110)
            if data_0 <= 5:
                time.sleep(1)
                break
            time.sleep(0.1)

        for stop4 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(140, 70)
            time.sleep(0.1)

        for back2 in range(5):
            drive(140, 70)
            time.sleep(0.1)

        for stop5 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(90, 110)
            time.sleep(0.1)

        for go3 in range(5):
            drive(90, 110)
            time.sleep(0.1)

        for stop6 in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(90, 70)
            time.sleep(0.1)

        for back3 in range(50):
            drive(90, 70)

            if data_4 <= 5:
                time.sleep(1)
                break
            time.sleep(0.1)
        for finish in range(2):
            drive(90, 90)
            time.sleep(0.1)
            drive(90, 90)
            time.sleep(0.1)
        rate.sleep()
        break
        rospy.on_shutdown(exit_node)

    def accelerate(self, angle, left, mid, right):

        if min(left, mid, right) < 100:
            speed = min(left, mid, right) - 60
            if speed < 10:
                speed = 0

        elif angle < -20 or angle > 20:
            speed = 0
        else:
            speed = 0  # 4

        return speed

    def exit(self):
        print('finished')
Exemple #27
0
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.imu = ImuRead('/diagnostics')
        self.information = {
            "speed": -1,
            "signal": "",
            "=>": "",
            "pitch": -1,
            "roll": -1,
            "yaw": -1
        }

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r = self.line_detector.detect_lines()
        # color_red, color_green, color_blue = self.line_detector.detect_colors()

        self.line_detector.show_images(line_l, line_r)
        self.information["roll"], self.information["pitch"], self.information[
            "yaw"] = self.imu.get_data()
        # self.line_detector.show_colors(color_red, color_green, color_blue)
        angle = self.steer(line_l, line_r)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r)
        self.information["speed"] = speed + 90
        # print('R (%.1f), P (%.1f), Y (%.1f)' % (self.r, self.p, self.y))
        self.driver.drive(angle + 90, speed + 90)

    # if self.obstacle_stop(obs_l, obs_m, obs_r) == 0:
    #    self.driver.drive(90, 90)
    # else:
    #    self.driver.drive(angle + 90, speed + 90)

    def steer(self, left, right):
        if left == -1:
            if 320 < right < 390:
                angle = -50
            else:
                angle = (550 - right) / (-3)
        elif right == -1:
            if 250 < left < 320:
                angle = 50
            else:
                angle = (left - 90) / 3
        else:
            angle = 0
        return angle

    def accelerate(self, angle, left, mid, right):
        # print(mid)
        if 0 < mid < 85:
            speed = 0
            return speed

        if angle <= -40 or angle >= 40:
            speed = 30
        elif angle <= -25 or angle >= 25:
            speed = 40
        else:
            speed = 50

        return speed

    def printInformation(self):
        print("speed : " + str(self.information["speed"]) + " ",
              "signal : " + str(self.information["signal"]) + " ",
              "=> " + str(self.information["=>"]))
        print("pitch : " + str(self.information["pitch"]) + " ",
              "roll : " + str(self.information["roll"]) + " ",
              "yaw : " + str(self.information["yaw"]))
        print("")

    def exit(self):
        print('finished')
Exemple #28
0
class AutoDrive:
    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.imu = ImuRead('diagnostics')
        self.before = [0, 0, 0]
        self.before_sonic = 0
        self.startTime = time.time()

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_l, line_r, line_s = self.line_detector.detect_lines()
        self.line_detector.show_images(line_l, line_r)
        r, p, y = self.imu.get_data()
        angle = self.steer(line_l, line_r, r, p, y)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r, r, p, y, line_s)
        self.driver.drive(angle + 90, speed + 90)
        # print(r, p, y, "imu")
        #print(self.read)

    def steer(self, left, right, r, p, y):
        mid = (left + right) // 2

        if left == -1 and right == -1:
            left, right, mid = self.before[0], self.before[1], self.before[2]

        if left > 0 and right > 0 and mid < 150:
            left, right, mid = self.before[0], self.before[1], self.before[2]

        # if right != -1 and (self.before[2] - mid) > 5:
        #     mid = (mid + self.before[2]) * 1 // 2 + 5
        #     print((mid + self.before[2]) * 1 // 2 + 5)

        if left == -1:
            if mid - 300 < -50:
                angle = -50
            else:
                angle = mid - 300
        elif right == -1:
            if mid - 15 > 50:
                angle = 50
            else:
                angle = mid - 15
        elif mid > 325:
            if mid - 325 > 50:
                angle = 50
            else:
                angle = mid - 325
        elif mid < 295:
            if mid - 295 < -50:
                angle = -50
            else:
                angle = mid - 295
        else:
            angle = 0

        if p > 5:
            angle = 0
        elif p < -5:
            angle = 0

        self.before[0], self.before[1], self.before[2] = left, right, mid
        return angle

    def accelerate(self, angle, left, mid, right, r, p, y, stop):

        if angle > 0:
            angle = -angle
        #if mid < 110:
        #    speed = 0
        if angle < -30 or angle > 30:
            speed = 50
        elif angle < -10:
            speed = 50
        else:
            speed = 50

        if p > 7:
            speed = -40
        elif p < -7:
            speed = 35

        print(left, mid, right, self.before_sonic - mid)
        self.before_sonic = mid

        if stop == 1:
            speed = 0
        return speed

    def exit(self):
        print('finished')
Exemple #29
0
class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')

        self.speed = 0
        self.speed2 = 0

    # 장애물, 차선 인식하여 조향각, 속도 결정, 모터 제어 메시지 발생
    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        left, right = self.line_detector.detect_lines()
        self.len30, self.len40, self.len50 = self.line_detector.img_match()
        print(self.len30, self.len40, self.len50)
        point = self.line_detector.show_images(left, right)  # 디버깅위한 화면 표시
        angle = self.steer(left, right)
        speed = self.accelerate(angle, obs_l, obs_m, obs_r, point)  # 조향각과 속도 인자 결정
        self.driver.drive(angle + 90, speed + 90)  # 모터 제어를 위한 메서드 호출

    # 왼쪽/오른쪽 차선 위치에 따라 조향각 결정
    # 가운데 : 0, 오른쪽 : 양수, 왼쪽 : 음수
    def steer(self, left, right):

        angle = 0

        mid = (left + right) // 2

        angle = int((mid - 320) * 0.5)

        if angle >= 30:
            angle = 50

        elif angle <= -30:
            angle = -50

        return angle

    # 조향각, 장애물 거리에 따라 속도 결정
    def accelerate(self, angle, left, mid, right, point):

        if self.len30 > 30:
            self.speed = 5
            print("speed is 30")

        elif self.len40 > 20:
            self.speed = 10
            print("speed is 40")


        elif self.len50 > 15:
            self.speed = 15
            print("speed is 50")

        if min(left, mid, right) < 100:
            speed = min(left, mid, right) - 60
            if speed < 10:
                speed = 0

        elif angle < -20 or angle > 20:
            speed = 0
        else:
            speed = 0  # 40

        if len(point) == 0:
            pass
        else:

            if point[1] >= 155 and point[2] >= 155:
                pass
            elif 180 <= point[2]:
                print("red")
                self.speed2 = 0
                self.speed = 0
            elif 150 <= point[1]:
                print("green")
                self.speed2 = 15

        return self.speed2 + self.speed

    def exit(self):
        print('finished')
class AutoDrive:

    def __init__(self):
        rospy.init_node('xycar_driver')
        self.line_detector = LineDetector('/usb_cam/image_raw')
        self.obstacle_detector = ObstacleDetector('/ultrasonic')
        self.driver = MotorDriver('/xycar_motor_msg')
        self.slow_time = time.time()
        self.prev_dis = 100
        self.prev_l = []
        self.prev_m = []
        self.prev_r = []
        self.MAX_SIZE = 3
        self.isstop = False
        self.isstart = False

    def average(self, L):
        if len(L) == 0:
            return 100
        return sum(L) / len(L)

    def trace(self):
        obs_l, obs_m, obs_r = self.obstacle_detector.get_distance()
        line_theta,left,right = self.line_detector.detect_lines()
        line_theta += 0.4
        angle = self.steer(line_theta,left,right)
        speed = self.accelerate(angle,line_theta,left,right)
        print(line_theta)
        #print(line_theta, left, right)
        print("left: {} mid: {} right: {}".format(obs_l,obs_m,obs_r))
        cnt = 0
        s = 0
        cos_theta = 0.9
        dis = self.prev_dis
        obs_l *= cos_theta
        obs_r *= cos_theta
        if obs_l != 0:
            if len(self.prev_l) + 1 >= self.MAX_SIZE:
                self.prev_l.pop(0)
            self.prev_l.append(obs_l)
            if obs_l <= 90:
                cnt +=1
            s += obs_l
        if obs_m != 0:
            if len(self.prev_m) + 1 >= self.MAX_SIZE:
                self.prev_m.pop(0)
            self.prev_m.append(obs_m)
            if obs_m <= 90:
                cnt +=2
            s += obs_m
        if obs_r != 0:
            if len(self.prev_r) + 1 >= self.MAX_SIZE:
                self.prev_r.pop(0)
            self.prev_r.append(obs_r)
            if obs_r <=90:
                cnt +=1
            s += obs_r
        if cnt >=2:
            dis = s/cnt

        if -1 <= line_theta <= 1 and cnt >=3 and self.isstart:
            if self.isstop:
                self.driver.drive(90,90)
            else:
                self.isstop = True
                for i in range(2):
                    self.driver.drive(90,90)
                    time.sleep(0.1)
                    self.driver.drive(90,50)
                    time.sleep(0.1)
                self.driver.drive(90,90)
                #time.sleep(3)
                rospy.signal_shutdown('Quit')
        else:
            self.isstop = False
            self.driver.drive(angle + 90+ 2.77, speed)

        if cnt >=2:
            self.prev_dis = dis
        if line_theta > 10:
            self.isstart = True

    def steer(self, theta, left, right):
        """
        weight = 0.0

        if left == -1:
            weight = 0.0

        elif right == -1:
            weight = 0.0
        else:
            mid = (left + right) / 2
            diff = 55-mid
            
            if abs(diff) < 3:
                weight = 0.0
            # car is at right
            elif diff < 0:
                weight = -1.0
            elif diff > 0:
                weight = 1.0
        """
        K = 0.0
        if -0.8 <= theta <= 0.8:
            K = 8.0
        elif -5 <= theta <= 5:
            K = 2.0
        elif -10 <= theta <= 10:
            K = 2.3
        elif -15 <= theta <= 15:
            '''
            if theta < 0:
                if theta > -10:
                    K = 1.86
                else:
                    K = 1.4
            else:
                K = 1.75
            '''
            if theta < 0:
                K = 2.0
            else:
                K = 2.0
        else: #elif abs(theta) < 30:
            if theta < 0:
                K = 3.0
            else:
                K = 3.0
        #else:
        #    K = 
        '''
        elif theta >= 20:
            K = 3.0
        elif theta <= -20:
            K = 2.1
        else:
            K = 1.5
        '''	
        """
        if theta > 0:
            K = 1.75
        else:
            K = 1.6
        """
        angle = theta * K

        return angle #+ (weight * 15)
        #return angle

    def accelerate(self, angle, theta, left, right):
        K = 140
        """
        if abs(theta) > 4:
            self.slow_time = time.time() + 2

        if time.time() < self.slow_time:
            K = 130
        """
        speed = K# - min(abs(theta)/2, 10) 

        return speed

    def exit(self):
        print('finished')