def measure_freq(e):
w = e.widget
tag =w.find_closest(e.x, e.y)
item = w.itemcget(tag,'tag')
target = int(item.split()[0])
if e.x < LPWIDTH/2 and e.y < OFFSET and 2 < target < 8: # Selected IN1, IN2, SEN, SQR1 or SQR2
freq = p.get_frequency(target)
if freq > 0.5:
r2f = p.r2ftime(target, target)*1.0e-6
msg(_('%4s : Freq = %5.3f. Duty Cycle = %5.1f %%') %(sources[target-1], freq, r2f*freq*100))
s=_('%4s\n%5.3f Hz\n%5.1f %%')%(sources[target-1], freq, r2f*freq*100)
g.disp(s)
else:
msg(_('No squarewave detected on %4s') %(sources[target-1]))
elif e.x > LPWIDTH/2 and e.y > OFFSET and target < 3: # Selected CH1, CH2 or CH3
if chan4[target][CHSRC] != 0 and chan4[target+1][CHSRC] != 0: # both channels active
fa = eyemath.fit_sine(chan4[target][TDATA],chan4[target][VDATA])
fb = eyemath.fit_sine(chan4[target+1][TDATA],chan4[target+1][VDATA])
if fa != None and fb != None:
v1 = fa[1][0]
v2 = fb[1][0]
f1 = fa[1][1]*1000 # millisecond x-axis gives frequency in kHz, convert it
f2 = fb[1][1]*1000
p1 = fa[1][2]
p2 = fb[1][2]
s = _('%s: %5.3f V, %5.2f Hz | %s: %5.2f V, %5.3f Hz | Phase difference = %5.1f degree') \
% (channels[target], v1, f1, channels[target+1],v2, f2, (p2-p1)*180/3.1416)
msg(s)
s=_('%4s\n%5.3f Hz\n%5.1f %%')%(sources[target-1], freq, r2f*freq*100)
g.disp(s)
else:
msg(_('Fitting of data failed. Try with Xmgrace'))
else:
msg(_('Selected channel and the next one should have data'), 'red')
def update():
global NP, delay, chanmask, measure, chan
s = ''
if chanmask == 8: # SENSOR
t, v = p.capture(4, NP, delay)
g.delete_lines()
g.line(t, v, 3)
if measure == 1:
fa = eyemath.fit_sine(t, v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz') % (abs(
pa[0]), pa[1] * 1000)
elif chanmask == 4: # A2
t, v = p.capture(2, NP, delay)
g.delete_lines()
g.line(t, v, 2)
if measure == 1:
fa = eyemath.fit_sine(t, v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz') % (abs(
pa[0]), pa[1] * 1000)
msgwin.config(text=s)
elif chanmask == 1 or chanmask == 2:
t, v = p.capture(chanmask - 1, NP, delay)
g.delete_lines()
g.line(t, v, chanmask - 1)
if measure == 1:
fa = eyemath.fit_sine(t, v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz') % (abs(
pa[0]), pa[1] * 1000)
msgwin.config(text=s)
elif chanmask == 3:
t, v, tt, vv = p.capture01(NP, delay)
g.delete_lines()
g.line(t, v)
g.line(tt, vv, 1)
if measure == 1:
fa = eyemath.fit_sine(t, v)
if fa != None:
pa = fa[1]
s = _('CH0 Vp = %5.2f V | Freq = %5.2f Hz ') % (abs(
pa[0]), pa[1] * 1000)
fb = eyemath.fit_sine(tt, vv)
if fb != None:
pb = fb[1]
s = s + _('CH1 Vp = %5.2f V | Freq = %5.2f Hz') % (abs(
pb[0]), pb[1] * 1000)
msgwin.config(text=s)
else:
g.delete_lines()
root.after(10, update)
def update():
global NP, delay, chanmask, measure, chan
s = ''
if chanmask == 8: # SENSOR
t,v = p.capture(4,NP,delay)
g.delete_lines()
g.line(t,v,3)
if measure == 1:
fa = eyemath.fit_sine(t,v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz')%(abs(pa[0]), pa[1]*1000)
elif chanmask == 4: # A2
t,v = p.capture(2,NP,delay)
g.delete_lines()
g.line(t,v,2)
if measure == 1:
fa = eyemath.fit_sine(t,v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz')%(abs(pa[0]), pa[1]*1000)
msgwin.config(text = s)
elif chanmask == 1 or chanmask == 2:
t,v = p.capture(chanmask-1,NP,delay)
g.delete_lines()
g.line(t,v,chanmask-1)
if measure == 1:
fa = eyemath.fit_sine(t,v)
if fa != None:
pa = fa[1]
s = _('Vpeak = %5.2f V | Freq = %5.2f Hz')%(abs(pa[0]), pa[1]*1000)
msgwin.config(text = s)
elif chanmask == 3:
t,v,tt,vv = p.capture01(NP,delay)
g.delete_lines()
g.line(t,v)
g.line(tt,vv,1)
if measure == 1:
fa = eyemath.fit_sine(t,v)
if fa != None:
pa = fa[1]
s = _('CH0 Vp = %5.2f V | Freq = %5.2f Hz ')%(abs(pa[0]), pa[1]*1000)
fb = eyemath.fit_sine(tt,vv)
if fb != None:
pb = fb[1]
s = s + _('CH1 Vp = %5.2f V | Freq = %5.2f Hz')%(abs(pb[0]), pb[1]*1000)
msgwin.config(text = s)
else:
g.delete_lines()
root.after(10,update)
def update():
global data, looping, NP, delay
if looping == False:
return
data = []
if NP <= 900:
t,v = p.capture_hr(1,NP,delay)
t2,v2 = p.capture_hr(2,NP,delay)
else:
t,v = p.capture(1,NP,delay)
t2,v2 = p.capture(2,NP,delay)
g.delete_lines()
g.line(t,v)
g.line(t2,v2)
data.append([t,v])
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = p.rms(v)
f0 = fa[1][1] * 1000
s = _('Freq = %5.0f Hz')%(fa[1][1]*1000)
else:
s = _('No Signal')
msgwin.config(text=s) # CRO part over
root.after(TIMER, update)
def measure_phase():
global data, NP, delay
data = []
phsum = 0.0
n = 0
try:
fr = float(Freq.get())
fs = p.set_sqr1(fr)
except:
msgwin.config(text=_('Invalid Frequency'))
return
p.enable_wait_rising(6)
for k in range(5):
t,v = p.capture_hr(1,NP,delay)
fa = eyemath.fit_sine(t, v)
if fa != None:
phsum += fa[1][2]
n += 1
else:
msgwin.config(text=_('No Signal'))
p.set_sqr1(-1)
if n < 1:
msgwin.config(text=_('Measurement failed'))
return
phase = phsum/n * (180.0/math.pi)
print n,phase
s = _('Freq = %5.0f Hz Phase = %5.0f deg')%(fs, phase)
msgwin.config(text=s)
data.append([t,v])
g.delete_lines()
g.line(t,v)
p.disable_actions()
def measure_phase():
global data, NP, delay
data = []
phsum = 0.0
n = 0
try:
fr = float(Freq.get())
fs = p.set_sqr1(fr)
except:
msgwin.config(text=_('Invalid Frequency'))
return
p.enable_wait_rising(6)
for k in range(5):
t, v = p.capture_hr(1, NP, delay)
fa = eyemath.fit_sine(t, v)
if fa != None:
phsum += fa[1][2]
n += 1
else:
msgwin.config(text=_('No Signal'))
p.set_sqr1(-1)
if n < 1:
msgwin.config(text=_('Measurement failed'))
return
phase = phsum / n * (180.0 / math.pi)
#print n,phase
s = _('Freq = %5.0f Hz Phase = %5.0f deg') % (fs, phase)
msgwin.config(text=s)
data.append([t, v])
g.delete_lines()
g.line(t, v)
p.disable_actions()
def curveFit(self, t, v, tt=None, vv=None):
"""
Curve fitting routine
@param t : abscissa vector
@param v : ordinate vector
@param tt: abscissa vector
@param vv: ordinate vector
"""
if not self.measure:
return
if not EYEMATH:
self.showhelp(
'python-scipy not installed. Required for data fitting', 'red')
return
s = ''
if self.chanmask in (1, 2):
fa = eyemath.fit_sine(t, v)
if fa != None:
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
s = 'CH%d: %5.2f V, F= %5.2f Hz' % (self.chanmask >> 1, rms,
f0)
else:
s = 'CH%d: nosig ' % (self.chanmask >> 1)
elif self.chanmask == 3:
fa = eyemath.fit_sine(t, v)
if fa != None:
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
ph0 = fa[1][2]
s += 'CH0: %5.2f V, F= %5.2f Hz' % (rms, f0)
else:
s += 'CH0: no signal'
fb = eyemath.fit_sine(tt, vv)
if fb != None:
rms = self.eye.rms(vv)
f1 = fb[1][1] * 1000
ph1 = fb[1][2]
s = s + '<br/>CH1: %5.2f V, F= %5.2f Hz' % (rms, f1)
if fa != None and abs(f0 - f1) < f0 * 0.1:
s = s + '<br/>dphi= %5.1f' % (
(ph1 - ph0) * 180.0 / math.pi)
else:
s += '<br/>CH1:no signal'
self.showhelp(s, 'blue')
return
def curveFit(self, t, v, tt=None, vv=None):
"""
Curve fitting routine
@param t : abscissa vector
@param v : ordinate vector
@param tt: abscissa vector
@param vv: ordinate vector
"""
if not self.measure:
return
if not EYEMATH:
self.showhelp("python-scipy not installed. Required for data fitting", "red")
return
s = ""
if self.chanmask in (1, 2):
fa = eyemath.fit_sine(t, v)
if fa != None:
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
s = "CH%d: %5.2f V, F= %5.2f Hz" % (self.chanmask >> 1, rms, f0)
else:
s = "CH%d: nosig " % (self.chanmask >> 1)
elif self.chanmask == 3:
fa = eyemath.fit_sine(t, v)
if fa != None:
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
ph0 = fa[1][2]
s += "CH0: %5.2f V, F= %5.2f Hz" % (rms, f0)
else:
s += "CH0: no signal"
fb = eyemath.fit_sine(tt, vv)
if fb != None:
rms = self.eye.rms(vv)
f1 = fb[1][1] * 1000
ph1 = fb[1][2]
s = s + "<br/>CH1: %5.2f V, F= %5.2f Hz" % (rms, f1)
if fa != None and abs(f0 - f1) < f0 * 0.1:
s = s + "<br/>dphi= %5.1f" % ((ph1 - ph0) * 180.0 / math.pi)
else:
s += "<br/>CH1:no signal"
self.showhelp(s, "blue")
return
def measure_freq(e):
w = e.widget
tag = w.find_closest(e.x, e.y)
item = w.itemcget(tag, 'tag')
target = int(item.split()[0])
if e.x < LPWIDTH / 2 and e.y < OFFSET and 2 < target < 8:
# Selected IN1, IN2, SEN, SQR1 or SQR2
freq = p.get_frequency(target)
if freq > 0.5:
r2f = p.r2ftime(target, target) * 1.0e-6
msg(
_('%4s : Freq = %5.3f. Duty Cycle = %5.1f %%') %
(sources[target - 1], freq, r2f * freq * 100))
s = _('%4s\n%5.3f Hz\n%5.1f %%') % (sources[target - 1], freq,
r2f * freq * 100)
g.disp(s)
else:
msg(_('No squarewave detected on %4s') % (sources[target - 1]))
elif e.x > LPWIDTH / 2 and e.y > OFFSET and target < 3:
# Selected CH1, CH2 or CH3
if chan4[target][CHSRC] != 0 and chan4[
target + 1][CHSRC] != 0: # both channels active
fa = eyemath.fit_sine(chan4[target][TDATA], chan4[target][VDATA])
fb = eyemath.fit_sine(chan4[target + 1][TDATA],
chan4[target + 1][VDATA])
if fa != None and fb != None:
v1 = fa[1][0]
v2 = fb[1][0]
f1 = fa[1][1] * 1000
# millisecond x-axis gives frequency in kHz, convert it
f2 = fb[1][1] * 1000
p1 = fa[1][2]
p2 = fb[1][2]
s = _('%s: %5.3f V, %5.2f Hz | %s: %5.2f V, %5.3f Hz | Phase difference = %5.1f degree') \
% (channels[target], v1, f1, channels[target+1],v2, f2, (p2-p1)*180/3.1416)
msg(s)
s=_('%4s\n%5.3f Hz\n%5.1f %%') \
% (sources[target-1], freq, r2f*freq*100)
g.disp(s)
else:
msg(_('Fitting of data failed. Try with Xmgrace'))
else:
msg(_('Selected channel and the next one should have data'), 'red')
def show_ftr(ch):
fa = eyemath.fit_sine(chan4[ch][TDATA],chan4[ch][VDATA]) # get frequency to decide suitable 'dt'
if fa != None:
fr = fa[1][1]*1000 # frequency in Hz
dt = int(1.e6/ (20 * fr)) # dt in usecs, 20 samples per cycle
t,v = p.capture(chan4[ch][CHSRC], 1800, dt)
xa,ya = eyemath.fft(v,dt)
eyeplot.plot(xa*1000,ya, title = _('Fourier Transform,power spectrum'), xl = _('Freq'), yl = _('Amp'))
msg(_('%s Fourier transform done, Data saved to "fft.dat"') %(channels[seltag]))
p.save([[xa,ya]],'fft.dat')
def show_ftr(ch):
fa = eyemath.fit_sine(chan4[ch][TDATA],chan4[ch][VDATA]) # get frequency to decide suitable 'dt'
if fa != None:
fr = fa[1][1]*1000 # frequency in Hz
dt = int(1.e6/ (20 * fr)) # dt in usecs, 20 samples per cycle
t,v = p.capture(chan4[ch][CHSRC], 1800, dt)
xa,ya = eyemath.fft(v,dt)
eyeplot.plot(xa*1000,ya,
title = _('Fourier Transform,power spectrum'),
xl = _('Freq'), yl = _('Amp'))
msg(_('%s Fourier transform done, Data saved to "fft.dat"')
% (channels[seltag]))
p.save([[xa,ya]],'fft.dat')
def capture():
global data, outmask, looping, NP, delay
if looping == True:
msgwin.config(text=_('Already Running'))
return
p.write_outputs(outmask)
time.sleep(0.5)
t, v = p.capture(0, NP, delay)
p.write_outputs(0)
g.delete_lines()
g.line(t, v)
data = t, v
fa = eyemath.fit_sine(t, v)
if fa != None:
rms = p.rms(v)
pa = fa[1]
s = _('CH0 : %5.1f V , %5.1f Hz ') % (rms, pa[1] * 1000)
msgwin.config(text=s)
def capture():
global data, outmask, looping, NP, delay
if looping == True:
msgwin.config(text = _('Already Running'))
return
p.write_outputs(outmask)
time.sleep(0.5)
t, v = p.capture(0,NP,delay)
p.write_outputs(0)
g.delete_lines()
g.line(t,v)
data = t,v
fa = eyemath.fit_sine(t,v)
if fa != None:
rms = p.rms(v)
pa = fa[1]
s = _('CH0 : %5.1f V , %5.1f Hz ') %(rms, pa[1]*1000)
msgwin.config(text = s)
def update():
global data, looping, NP, delay
if looping == False:
return
data = []
t,v = p.capture(0,NP,delay)
g.delete_lines()
g.line(t,v)
data.append([t,v])
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = p.rms(v)
f0 = fa[1][1] * 1000
s = _('Freq = %5.0f Hz')%(fa[1][1]*1000)
else:
s = _('No Signal')
msgwin.config(text=s) # CRO part over
root.after(TIMER, update)
def update():
global data, looping, NP, delay
data = []
if looping == False:
return
t,v,tt,vv = p.capture01(NP,delay)
for k in range(len(vv)): vv[k] -= 2.5
g.delete_lines()
g.line(t,v)
g.line(tt,vv,1)
data.append([t,v])
data.append([tt,vv])
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = p.rms(v)
f0 = fa[1][1] * 1000
s = _('Phase = %5.0f deg')%(fa[1][2]*180/math.pi)
else:
s = _('No Signal')
msgwin.config(text=s) # CRO part over
root.after(TIMER, update)
def update():
global data, looping, NP, delay
data = []
if looping == False:
return
t, v, tt, vv = p.capture01(NP, delay)
for k in range(len(vv)):
vv[k] -= 2.5
g.delete_lines()
g.line(t, v)
g.line(tt, vv, 1)
data.append([t, v])
data.append([tt, vv])
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = p.rms(v)
f0 = fa[1][1] * 1000
s = _('Phase = %5.0f deg') % (fa[1][2] * 180 / math.pi)
else:
s = _('No Signal')
msgwin.config(text=s) # CRO part over
root.after(TIMER, update)
def routine_work(self):
global NP, delay, chanmask, measure, lissa, EYEMATH
s = ''
self.trace = []
# In the final stage, move this to a Try block.
if lissa == True:
t, v, tt, vv = self.eye.capture01(NP, delay)
g.delete_lines()
g.setWorld(-5, -5, 5, 5, 'mS', 'V')
g.line(v, vv)
self.trace.append([v, vv])
elif chanmask == 1 or chanmask == 2: # Waveform display code
t, v = self.eye.capture(chanmask - 1, NP, delay)
g.delete_lines()
g.line(t, v, chanmask - 1)
self.trace.append([t, v])
elif chanmask == 3:
t, v, tt, vv = self.eye.capture01(NP, delay)
g.delete_lines()
g.line(t, v)
g.line(tt, vv, 1)
self.trace.append([t, v])
self.trace.append([tt, vv])
if measure == 1 and EYEMATH == False:
showhelp('python-scipy not installed. Required for data fitting',
'red')
if measure == 1 and lissa == False and EYEMATH == True: # Curve Fitting
if chanmask == 1 or chanmask == 2:
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
s = 'CH%d: %5.2f V, F= %5.2f Hz' % (chanmask >> 1, rms, f0)
else:
s = 'CH%d: nosig' % (chanmask >> 1)
elif chanmask == 3:
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0],8)
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
ph0 = fa[1][2]
s += 'CH0: %5.2f V, %5.2f Hz' % (rms, f0)
else:
s += 'CH0: no signal '
fb = eyemath.fit_sine(tt, vv)
if fb != None:
#g.line(tt,fb[0],8)
rms = self.eye.rms(vv)
f1 = fb[1][1] * 1000
ph1 = fb[1][2]
s = s + ' | CH1: %5.2f V, %5.2f Hz' % (rms, f1)
if fa != None and abs(f0 - f1) < f0 * 0.1:
s = s + ' | dphi= %5.1f' % (
(ph1 - ph0) * 180.0 / math.pi)
else:
s += '| CH1:no signal '
msgwin.config(text=s) # CRO part over
v = self.eye.get_voltage(6) # CS voltage
self.labset(27, '%5.3f V' % v)
v = self.eye.get_voltage(0) # A0
self.labset(26, '%5.3f V' % v)
v = self.eye.get_voltage(1) # A1
self.labset(25, '%5.3f V' % v)
v = self.eye.get_voltage(2) # A2
self.labset(24, '%5.3f V' % v)
v = self.eye.get_voltage(4) # SENSOR
self.labset(23, '%5.3f V' % v)
res = self.eye.read_inputs() # Set the color based on Input Levels
if res & 1: # ID0
self.tw[1].config(bg=pgreen)
else:
self.tw[1].config(bg='gray')
if res & 2: # ID1
self.tw[2].config(bg=pgreen)
else:
self.tw[2].config(bg='gray')
if res & 4: # T15 input
self.tw[15].config(bg=pgreen)
else:
self.tw[15].config(bg='gray')
if res & 8: # Sensor Input
self.tw[22].config(bg=pgreen)
else:
self.tw[22].config(bg='gray')
if self.NOSQR2 == False:
freq = self.eye.get_sqr2()
if freq > 0:
self.labset(8, '%5.1f Hz' % freq)
else:
self.labset(8, '0 Hz')
self.NOSQR2 = True
if self.NOSF == False:
freq = self.eye.sensor_frequency()
if freq > 0:
self.labset(22, '%5.1f Hz' % freq)
else:
self.labset(22, '0 Hz')
self.NOSF = True
def update():
global delay, NP, delay, VPERDIV,data, CMERR, Freq
# fix division results when using Python3
NP=int(NP)
delay=int(delay)
if CMERR == True:
CMERR = False
msg('')
try:
p.set_trig_source(1)
t0, v0, t1, v1 = p.capture2_hr(1,2,NP,delay)
g.delete_lines()
vp.delete_lines()
g.line(t0,v0,0)
g.line(t1,v1,1)
data[0][0] = t0
data[0][1] = v0
data[1][0] = t1
data[1][1] = v1
t2 = [0]*NP # Calculate voltages A1 - A2
v2 = [0]*NP
for k in range(NP):
t2[k] = t1[k]
v2[k] = v0[k] - v1[k]
g.line(t2,v2,2)
data[2][0] = t2
data[2][1] = v2
# fitting
fa = eyemath.fit_sine(t0,v0)
fb = eyemath.fit_sine(t1,v1)
fc = eyemath.fit_sine(t2,v2)
if fa != None and fb != None and fc != None:
rmsv0 = p.rms(v0)
dv0 = 100 * abs( (rmsv0-p.rms(fa[0])) /rmsv0 )
rmsv1 = p.rms(v1)
dv1 = 100 * abs( (rmsv1-p.rms(fb[0])) /rmsv1 )
a0 = fa[1][0]
a1 = fb[1][0]
a2 = fc[1][0]
pd01 = math.atan(a2/a1)
pd01_fit = fb[1][2]-fa[1][2]
sign = pd01_fit / abs(pd01)
pherr = abs(pd01) - abs(pd01_fit)
pherr = abs(pherr/pd01) * 100
#print 180./math.pi*pd01, 180./math.pi*pd01_fit, pherr
if dv0 > 2.0 or dv1 > 2.0 or pherr > 100.0: # Check for error in FIT
g.line(t0, fa[0], col = 6)
g.line(t1, fb[0], col = 5)
msg(_('Error in Fit (A0: Black &Yellow, A1-Red & Green). Try Changing X-scale'))
# Display even if there is an error in fitted results
fr = fa[1][1]*1000
Fit0.config(text = _('Frequency = %5.1f Hz') %fr)
Fit1.config(text = _('A1:Total voltage = %5.2f V') %(a0))
Fit2.config(text = _('A2:Voltage across R = %5.2f V') %(a1))
Fit3.config(text = _('A1-A2:Voltage across LC = %5.2f V') %(a2))
Fit4.config(text = _('Phase Shift = %5.1f deg') %(pd01_fit*180./math.pi))
#Fit5.config(text = _('arc tan(Vx/Vr)= %5.1f deg') %(pd01*180./math.pi))
vp.line((0,0),(0, a1), col =1)
rx = a0 * math.sin(pd01_fit)
ry = a0 * math.cos(pd01_fit)
vp.line((0,rx),(0,ry))
vp.line((0,sign*a2),(0, 0), col=2)
else:
msg(_('Curve Fitfing failed. Try changing X scale'))
except:
msg(_('Capture Error. Check input voltage levels.'),'red')
CMERR = True
root.after(10,update)
def update():
global delay, NP, delay, VPERDIV,data, CMERR, Freq
if CMERR == True:
CMERR = False
msg('')
try:
p.set_trig_source(1)
t0,v0,t1,v1 = p.capture2_hr(1,2,NP,delay)
g.delete_lines()
vp.delete_lines()
g.line(t0,v0,0)
g.line(t1,v1,1)
data[0][0] = t0
data[0][1] = v0
data[1][0] = t1
data[1][1] = v1
t2 = [0]*NP # Calculate voltages A1 - A2
v2 = [0]*NP
for k in range(NP):
t2[k] = t1[k]
v2[k] = v0[k] - v1[k]
g.line(t2,v2,2)
data[2][0] = t2
data[2][1] = v2
# fitting
fa = eyemath.fit_sine(t0,v0)
fb = eyemath.fit_sine(t1,v1)
fc = eyemath.fit_sine(t2,v2)
if fa != None and fb != None and fc != None:
rmsv0 = p.rms(v0)
dv0 = 100 * abs( (rmsv0-p.rms(fa[0])) /rmsv0 )
rmsv1 = p.rms(v1)
dv1 = 100 * abs( (rmsv1-p.rms(fb[0])) /rmsv1 )
a0 = fa[1][0]
a1 = fb[1][0]
a2 = fc[1][0]
pd01 = math.atan(a2/a1)
pd01_fit = fb[1][2]-fa[1][2]
sign = pd01_fit / abs(pd01)
pherr = abs(pd01) - abs(pd01_fit)
pherr = abs(pherr/pd01) * 100
#print 180./math.pi*pd01, 180./math.pi*pd01_fit, pherr
if dv0 > 2.0 or dv1 > 2.0 or pherr > 100.0: # Check for error in FIT
g.line(t0, fa[0], col = 6)
g.line(t1, fb[0], col = 5)
msg(_('Error in Fit (A0: Black &Yellow, A1-Red & Green). Try Changing X-scale'))
# Display even if there is an error in fitted results
fr = fa[1][1]*1000
Fit0.config(text = _('Frequency = %5.1f Hz') %fr)
Fit1.config(text = _('A1:Total voltage = %5.2f V') %(a0))
Fit2.config(text = _('A2:Voltage across R = %5.2f V') %(a1))
Fit3.config(text = _('A1-A2:Voltage across LC = %5.2f V') %(a2))
Fit4.config(text = _('Phase Shift = %5.1f deg') %(pd01_fit*180./math.pi))
#Fit5.config(text = _('arc tan(Vx/Vr)= %5.1f deg') %(pd01*180./math.pi))
vp.line((0,0),(0, a1), col =1)
rx = a0 * math.sin(pd01_fit)
ry = a0 * math.cos(pd01_fit)
vp.line((0,rx),(0,ry))
vp.line((0,sign*a2),(0, 0), col=2)
else:
msg(_('Curve Fitfing failed. Try changing X scale'))
except:
msg(_('Capture Error. Check input voltage levels.'),'red')
CMERR = True
root.after(10,update)
from __future__ import print_function
'''
Connect pickup coil to A1 and Fit the sine wave for getting frequency.
From frequency of rotation of anemometer wind speed can be calculated
'''
import gettext
gettext.bindtextdomain("expeyes")
gettext.textdomain('expeyes')
_ = gettext.gettext
import expeyes.eyesj as ej
import expeyes.eyemath as em
from pylab import plot, show
p = ej.open()
t, v = p.capture(1, 400, 100)
try:
vfit, par = em.fit_sine(t, v)
print(par[1]) # second parameter is frequency
print((t, v))
plot(t, vfit)
show()
except:
print("No alternative signal, please make another try.")
def update():
global delay, NP, NC, VPERDIV, chan4, CMERR
global NP, NC, delay,chan4
chans = [] # Update channel & color information
index = []
for m in range(len(chan4)):
if chan4[m][0] > 0:
chans.append(chan4[m][0]) # channel number
index.append(m) # Store the used indices, for storing & fitting
NC = len( chans)
# force int types as NP and delay can come from float divisions
# with Python3
NP=int(NP)
delay=int(delay)
try:
if NC == 1:
chan4[index[0]][TDATA], \
chan4[index[0]][VDATA] \
= p.capture_hr(chans[0], NP, delay)
v1 = []
for k in range(NP): v1.append(
chan4[index[0]][VDATA][k] +
chan4[index[0]][DOFFSET])
g.delete_lines()
g.line(chan4[index[0]][TDATA],v1, index[0])
elif NC == 2:
chan4[index[0]][TDATA],chan4[index[0]][VDATA], \
chan4[index[1]][TDATA],chan4[index[1]][VDATA] = p.capture2_hr( chans[0], chans[1], NP, delay)
v1 = []
v2 = []
for k in range(NP):
v1.append(
chan4[index[0]][VDATA][k] +
chan4[index[0]][DOFFSET])
v2.append(
chan4[index[1]][VDATA][k] +
chan4[index[1]][DOFFSET])
g.delete_lines()
g.line(chan4[index[0]][TDATA], v1, index[0])
g.line(chan4[index[1]][TDATA], v2, index[1])
elif NC == 3:
chan4[index[0]][TDATA],chan4[index[0]][VDATA], chan4[index[1]][TDATA],chan4[index[1]][VDATA], \
chan4[index[2]][TDATA],chan4[index[2]][VDATA] = p.capture3( chans[0], chans[1], chans[2], NP, delay)
v1 = []
v2 = []
v3 = []
for k in range(NP):
v1.append(
chan4[index[0]][VDATA][k] +
chan4[index[0]][DOFFSET])
v2.append(
chan4[index[1]][VDATA][k] +
chan4[index[1]][DOFFSET])
v3.append(
chan4[index[2]][VDATA][k] +
chan4[index[2]][DOFFSET])
g.delete_lines()
g.line(chan4[index[0]][TDATA], v1, index[0])
g.line(chan4[index[1]][TDATA], v2, index[1])
g.line(chan4[index[2]][TDATA], v3, index[2])
elif NC == 4:
chan4[index[0]][TDATA],chan4[index[0]][VDATA], chan4[index[1]][TDATA],chan4[index[1]][VDATA], \
chan4[index[2]][TDATA],chan4[index[2]][VDATA], chan4[index[3]][TDATA],chan4[index[3]][VDATA] \
= p.capture4( chans[0], chans[1], chans[2], chans[3], NP, delay)
v1 = []
v2 = []
v3 = []
v4 = []
for k in range(NP):
v1.append(
chan4[index[0]][VDATA][k] +
chan4[index[0]][DOFFSET])
v2.append(
chan4[index[1]][VDATA][k] +
chan4[index[1]][DOFFSET])
v3.append(
chan4[index[2]][VDATA][k] +
chan4[index[2]][DOFFSET])
v4.append(
chan4[index[3]][VDATA][k] +
chan4[index[3]][DOFFSET])
g.delete_lines()
g.line(chan4[index[0]][TDATA], v1, index[0])
g.line(chan4[index[1]][TDATA], v2, index[1])
g.line(chan4[index[2]][TDATA], v3, index[2])
g.line(chan4[index[3]][TDATA], v4, index[3])
if CMERR == True:
CMERR = False
msg('')
except:
msg(_('Communication Error. Check input voltage levels.'),
'red')
CMERR = True
for k in range(4):
if chan4[k][CHSRC] != 0 and chan4[k][FITFLAG] == 1:
fa = eyemath.fit_sine(chan4[k][TDATA],chan4[k][VDATA])
if fa != None:
chan4[k][VFDAT] = fa[0]
chan4[k][AMP] = abs(fa[1][0])
chan4[k][FREQ] = fa[1][1]*1000
chan4[k][PHASE] = fa[1][2] * 180/eyemath.pi
s = _('%5.2f V, %5.1f Hz')\
%(chan4[k][AMP],chan4[k][FREQ])
chan4[k][WFIT].config(text = s, fg= chancols[k])
if looping.get() == '0':
root.after(10,update)
def routine_work(self):
global NP, delay, chanmask, measure, lissa, EYEMATH
s = ''
self.trace = []
# In the final stage, move this to a Try block.
if lissa == True:
t,v,tt,vv = self.eye.capture01(NP,delay)
g.delete_lines()
g.setWorld(-5,-5,5,5,_('mS'),'V')
g.line(v,vv)
self.trace.append([v,vv])
elif chanmask == 1 or chanmask == 2: # Waveform display code
t, v = self.eye.capture(chanmask-1,NP,delay)
g.delete_lines()
g.line(t,v,chanmask-1)
self.trace.append([t,v])
elif chanmask == 3:
t,v,tt,vv = self.eye.capture01(NP,delay)
g.delete_lines()
g.line(t,v)
g.line(tt,vv,1)
self.trace.append([t,v])
self.trace.append([tt,vv])
if measure == 1 and EYEMATH == False:
showhelp(_('python-scipy not installed. Required for data fitting'),'red')
if measure == 1 and lissa == False and EYEMATH == True: # Curve Fitting
if chanmask == 1 or chanmask == 2:
fa = eyemath.fit_sine(t, v)
if fa != None:
#g.line(t,fa[0], 8)
rms = self.eye.rms(v)
f0 = fa[1][1] * 1000
s = 'CH%d %5.2f V , F= %5.2f Hz'%(chanmask>>1, rms, f0)
else:
s = _('CH%d nosig ')%(chanmask>>1)
elif chanmask == 3:
fa = eyemath.fit_sine(t,v)
if fa != None:
#g.line(t,fa[0],8)
rms = self.eye.rms(v)
f0 = fa[1][1]*1000
ph0 = fa[1][2]
s += 'CH0 : %5.2f V , %5.2f Hz '%(rms, f0)
else:
s += _('CH0: no signal ')
fb = eyemath.fit_sine(tt,vv)
if fb != None:
#g.line(tt,fb[0],8)
rms = self.eye.rms(vv)
f1 = fb[1][1]*1000
ph1 = fb[1][2]
s = s + '| CH1 %5.2f V , %5.2f Hz'%(rms, f1)
if fa != None and abs(f0-f1) < f0*0.1:
s = s + _(' | dphi= %5.1f')%( (ph1-ph0)*180.0/math.pi)
else:
s += _('| CH1:no signal ')
msgwin.config(text=s) # CRO part over
v = self.eye.get_voltage(6) # CS voltage
self.labset(27, '%5.3f V'%v)
v = self.eye.get_voltage(0) # A0
self.labset(26, '%5.3f V'%v)
v = self.eye.get_voltage(1) # A1
self.labset(25, '%5.3f V'%v)
v = self.eye.get_voltage(2) # A2
self.labset(24, '%5.3f V'%v)
v = self.eye.get_voltage(4) # SENSOR
self.labset(23, '%5.3f V'%v)
res = self.eye.read_inputs() # Set the color based on Input Levels
if res & 1: # ID0
self.tw[1].config(bg = pgreen)
else:
self.tw[1].config(bg = 'gray')
if res & 2: # ID1
self.tw[2].config(bg = pgreen)
else:
self.tw[2].config(bg = 'gray')
if res & 4: # T15 input
self.tw[15].config(bg = pgreen)
else:
self.tw[15].config(bg = 'gray')
if res & 8: # Sensor Input
self.tw[22].config(bg = pgreen)
else:
self.tw[22].config(bg = 'gray')
if self.NOSQR2 == False:
freq = self.eye.get_sqr2()
if freq > 0:
self.labset(8,'%5.1f Hz'%freq)
else:
self.labset(8, '0 Hz')
self.NOSQR2 = True
if self.NOSF == False:
freq = self.eye.sensor_frequency()
if freq > 0:
self.labset(22,'%5.1f Hz'%freq)
else:
self.labset(22, '0 Hz')
self.NOSF = True
from __future__ import print_function
'''
Connect pickup coil to A1 and Fit the sine wave for getting frequency.
From frequency of rotation of anemometer wind speed can be calculated
'''
import gettext
gettext.bindtextdomain("expeyes")
gettext.textdomain('expeyes')
_ = gettext.gettext
import expeyes.eyesj as ej
import expeyes.eyemath as em
from pylab import plot, show
p = ej.open()
t,v= p.capture(1,400,100)
try:
vfit, par = em.fit_sine(t,v)
print (par[1]) # second parameter is frequency
print((t,v))
plot(t, vfit)
show()
except:
print("No alternative signal, please make another try.")