MICROCONTROLLER PULSE SENSOR WITH TRANSMISSION OF INFORMATION ON RADIO CHANNEL Russian patent published in 2018 - IPC A61B5/295 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical technology, namely, to measure the patient's pulse rate. Microcontroller pulse sensor with information transmission over radio channel contains microcontroller, LED, photodetector, RC filter, the first, second, third and fourth resistors, the first terminal of the first resistor being connected to the LED anode, the first output of the second resistor is connected to the first terminal of photodetector, LED cathode and the second terminal of photodetector are connected to microcontrolle minus power supply, the second output of the second resistor is connected to microcontrolle power supply plus, the output of the RC filter is connected to analogue comparator first input of microcontroller, output of the first pulse width modulator of microcontroller is connected to the second terminal of the first microcontroller, the first output of photodetector is connected to RC filter input, the first terminals of third and fourth resistors are connected to analogue comparator second input of the microcontroller, the second terminal of the third resistor is connected to plus of microcontroller power supply, the second terminal of the fourth resistor is connected to minus of microcontroller power supply, pulse sensor further comprising a capacitor connected to LED in parallel, the second pulse width modulator of microcontroller, connected to radio transmitter input with two-level amplitude manipulation.

EFFECT: usage of invention makes it possible to improve accuracy of pulse rate measurements.

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