FIELD: medicine.
SUBSTANCE: invention relates to medicine and can be used to diagnose patient's heart rate. Microcontroller transducer for photoplethysmographic pulse sensor comprises a microcontroller, a LED, a photodetector, RC-filter, first and second resistors. First lead of first resistor is connected to anode of LED. First lead of second resistor connected to first lead of photodetector. Cathode of LED and a second lead of photodetector are connected to negative terminal of power supply of microcontroller. Second lead of second resistor is connected to positive terminal of power supply of microcontroller. Output of RC-filter is connected to first input of analogue comparator of microcontroller. Microcontroller measuring transducer also includes third and fourth resistors. Second lead of first resistor is connected to output of pulse-width modulator of microcontroller. First lead of photodetector is connected to input of RC-filter. First leads of third and fourth resistors are connected to second input of analogue comparator of microcontroller. Second lead of third resistor is connected to positive terminal of power supply of microcontroller. Second lead of fourth resistor is connected to negative terminal of power supply of microcontroller.
EFFECT: higher measurement accuracy.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MICROCONTROLLER PULSE SENSOR WITH TRANSMISSION OF INFORMATION ON RADIO CHANNEL | 2017 |
|
RU2646131C1 |
| MICROCONTROLLER METERING CONVERTER OF RESISTANCE WITH CONTROLLED SENSITIVITY | 2012 |
|
RU2491558C1 |
| MICROCONTROLLER METERING CONVERTER WITH BALANCING OF RESISTIVE BRIDGE | 2012 |
|
RU2506599C1 |
| MICROCONTROLLER ADC WITH TRANSIENT PROCESS IN RC CIRCUIT | 2012 |
|
RU2523208C1 |
| MICROCONTROLLER METERING CONVERTER WITH CONTROLLED POWER SUPPLY OF RESISTIVE MEASUREMENT CIRCUITS BY METHOD OF WIDTH-PULSE MODULATION | 2014 |
|
RU2563315C1 |
| MICROCONTROLLER MEASUREMENT CONVERTER WITH BALANCING OF RESISTIVE WHEATSTONE BY METHOD OF WIDTH-PULSE MODULATION | 2012 |
|
RU2515309C1 |
| MICROCONTROLLER METERING TRANSDUCER OF CAPACITANCE AND RESISTANCE INTO BINARY CODE | 2009 |
|
RU2391677C1 |
| MICROCONTROLLER METERING TRANSDUCER OF RESISTANCE OF RESISTOR SENSORS INTO BINARY CODE WITH SELF-DIAGNOSTICS FUNCTION | 2018 |
|
RU2690517C1 |
| MICROCONTROLLER DEVICE FOR MEASURING METEOROLOGICAL FACTORS AND CALCULATING EFFECTIVE TEMPERATURE FOR DIGITAL CLIMATE CONTROL SYSTEMS | 2022 |
|
RU2799970C1 |
| MICROCONTROLLER-BASED RESISTANCE-TO-BINARY CODE MEASURING TRANSDUCER | 2010 |
|
RU2444020C1 |
