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From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
10-12-2017 06:42 AM
Hi to all,
I work on a Photoplethysmography (PPG) Project with a customised Optoelectronic Sensor to monitor vital signs where I acquire the signals (PPG + Accelerometer) from the sensor to a customised board for all the necessary analogue signal processing and through DAQs to LabVIEW for further processing to perform multi-channel Photoplethysmography (PPG).
I would like to convert this Opto-physiological Measurement System setup to a wireless (Bluetooth) one.
Please see the attached image of the current setup:
The current system consists of:
Various connectors on the board:
① Power Supply Connectors: There are three power-supply connectors, VDD, -VDD and GND, standard banana plugs, which are colour coded (red = VDD, blue = -VDD, black = GND). The electronic board can be supplied with ±15V(nominal) when connected to the Power Supply Device mentioned above.
② RS232 Master Serial Port Connector: The MASTER connector is used to connect the Electronic Board to a PC. With a Serial-to-USB adapter cable it can be connected directly to a PC USB Port.
③ Probe Connector: The circuit uses a single 9-pin D-type female connector to connect to the Optoelectronic Sensor for the PPG signals capture.
The Accelerometer, on the other hand, is connected to a Data Acquisition USB Device which is in turn connected to a PC USB Port through a USB cable.
④ Processed Outputs:A single 16-way 0.1-inch pitch IDC connector is used as the output for all amplified and filtered output channels.
⑤ Raw Outputs: A single 16-way 0.1-inch pitch IDC connector is used as the output for the unprocessed output channels.
Please see the attached image of the Bluetooth setup:
Requirements:
I would appreciate any suggestions and ideas on how to convert my setup into a wireless one by eliminating at this stage the probe cable for more flexibility in order to avoid any disturbances on the acquired signals.
Thank you in advance
Panos