def __init__(self):
# Initialize aquisition/behavior part of acoustics system
self.adc = ADS7865()
self.filt = LTC1564()
self.plt = None
self.auto_update = None
# Initialize Data buffer
self.data_buffer = (None, None, None, None)
# Initialize pinger frequency via config file
self.pinger_freq = config.getfloat('Acoustics', 'pinger_frequency')
# Initialize abstract hydrophone object
self.array = hydrophones.Array()
# Define hydrophone locations
self.array.move(ARRAY_DEFAULT_LOCATION)
d = config.getfloat('Acoustics','array_spacing')
array_conf = config.get('Acoustics', 'array_configuration')
if array_conf == 'yaw':
self.array.define( hydrophones.generate_yaw_array_definition(d) )
elif array_conf == 'dual':
self.array.define( hydrophones.generate_yaw_pitch_dual_array_definition(d,d) )
else:
raise IOError("Unrecognized hydrophone array configuration (%s)."
% array_conf)
# Various parameter used later in this class
self.valid_signal_flg = ''
self.fig = None
# Init logging class
self.logger = Logging()
def _refresh_array_spacing(self):
"""Following refresh of config file, the array model must be
updated.
"""
# set update tolerance
tol = 0.001e-3
# update if necessary
d = config.getfloat('Acoustics', 'array_spacing') # Assumes Config has been refreshed
if not (-tol < d-self.array.d[0] < tol):
# User has supplied a new value of hydrophone distance
print("acoustics.py: update array with %.2fcm spacing" % (d *100.0))
self.array.define( hydrophones.generate_yaw_array_definition(d) )
def create_hydrophone_pair(spacing):
array = hydrophones.Array()
array.move(WORLD_ORIGIN)
array.define( hydrophones.generate_yaw_array_definition( spacing ) )
return array