| 摘要 |
An oximeter based on audio interface communication comprises a power supply module, a sensor control module, a sensor, a sensor signal processing module and a physical hardware of a standard audio interface; a left sound channel signal transmission line, a right sound channel signal transmission line and a microphone signal transmission line of the audio interface perform a power supply transmission, a control signal input and a collection signal output respectively; a control signal input end of the sensor control module is connected with a control signal input circuit of the audio interface; an input end of the power supply module is connected with a power supply transmission line of the audio interface; an output end of the sensor signal processing module is connected with a collection signal output line of the audio interface; a control signal output end of the sensor control module is connected with a control signal input end of the sensor; a signal output end of the sensor is connected with an input end of the sensor signal processing module. |
