Hydrogen sensor module output automatic calibration circuit and calibration method thereof
The invention provides a hydrogen sensor module output automatic calibration circuit, which comprises a hydrogen sensor module, and is characterized in that the hydrogen sensor module comprises a hydrogen sensor and a signal conditioning circuit which are electrically connected, the signal condition...
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| creator | QIAN WEI SHEN FANGPING WU NAN ZHU YANGKAI |
| description | The invention provides a hydrogen sensor module output automatic calibration circuit, which comprises a hydrogen sensor module, and is characterized in that the hydrogen sensor module comprises a hydrogen sensor and a signal conditioning circuit which are electrically connected, the signal conditioning circuit is connected with a single chip microcomputer, and the single chip microcomputer is connected with a digital-to-analog converter; the SYNC pin, the SA_SCL pin and the DA SDA pin of the digital-to-analog converter are connected with the single-chip microcomputer, and the DIOUT pin of thedigital-to-analog converter is connected with a divider resistor R1 and a resistor R2 to form an MCU_ADCIN1 and then is connected to the single-chip microcomputer; the single-chip microcomputer completes setting of a digital-analog linear function by collecting an output value of the MCU ADCIN1 and an input value of the DA_SDA so as to achieve automatic calibration. The circuit has the advantagesof automatic calibration, |
| format | Patent |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING |
| title | Hydrogen sensor module output automatic calibration circuit and calibration method thereof |
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