User's Guide

ATS58-1818 5.8GHz Motion sensor
Version 1.1
5
5.Radar signal processing
AT5810 integrates a microwave circuit and an IF amplifier circuit. After the chip is powered
on, the MCU first initializes it through the I2C interface. The configuration parameters include
frequency and gain. After initialization, the MCU directly reads the quantized digital IF of the
ADC through the I2C Signal, and then output the corresponding inductive control signal according
to the characteristics of the intermediate frequency signal.The output voltage is 5V or 0V;
6.Sensing time and sensing distance adjustment
There are two resistors on the graph, one to adjust the output duration time and another to
adjust the sensitivity. By default, both exist, the corresponding time is 2S (test mode) and the
corresponding distance is 4 ~ 6m. If the time-dependent resistance 1 is removed, the output
duration time will become 30S. If the resistance 2 is removed, the sensing distance will become 3
~ 5m.
Figure2 adjust resistors
1
2