IF01A/B conversion circuit

The IF01B conversion circuit is used to convert the current signal output by the accelerometer into a digital signal and output it externally through the communication port. The main functions include:

1) Current frequency conversion function: Convert 3 current signals into 6 pulse signals;

2) Pulse signal counting function: Collect and count pulse signals;

3) Synchronous selection communication signal receiving function: Receive external differential selection communication signal input and latch the pulse counter value;

4) Serial communication function: According to the selected communication number, the pulse counter value and the temperature value of DS18B20 on the board are periodically sent through the RS422 communication port.