Detection distance calibration method, apparatus, and device

A detection distance calibration device, comprising:

• a signal transmitter;
• a sensor;
• and
• a processor;
• wherein
• the signal transmitter is configured to transmit at least one detection signal;
• the sensor is configured to:
• collect the at least one detection signal, and
• determine a strength value of the at least one detection signal, wherein the strength value of the detection signal reflects a length of a detection distance;
• the processor is configured to:
• obtain the strength value that is of the at least one detection signal and is determined by the sensor,
• determine a reference strength value of the at least one detection signal according to the strength value of the at least one detection signal,
• determine a calibration threshold according to the reference strength value, wherein the calibration threshold is used to determine a calibration range of the detection distance, and
• calibrate the detection distance according to the calibration threshold and a strength value of a detection signal subsequently collected by the sensor.