BATTERY-POWERED SECURITY SENSOR SYSTEM

摘要

A security sensor system is provided which allows the stopping of the device due to the end of a battery life to be postponed by suppressing battery power consumption, which is caused due to an object detection operation of the security sensor system, after a low battery state is detected. The security sensor system is powered by a battery. When a low battery detector detects a reduction in the voltage of the battery, an object detection operation of the security sensor system is switched from a normal mode to a suppression mode. Consumption of the battery in the suppression mode is suppressed.

主权项

1. A security sensor system powered by a battery, the security sensor system comprising:
an object sensor to generate an object detection signal when detecting an object; an output interface module to provide a warning signal; a controller to receive the object detection signal generated by the object sensor, the controller controlling the output interface module in accordance with the object detection signal to cause the output interface module to output the warning signal; a low battery detector to detect a reduction in a voltage of the battery; and an operation mode switcher to switch an object detection operation of the security sensor system from a normal mode to a suppression mode when the low battery detector detects a reduction in the voltage of the battery, consumption of the battery in the suppression mode being suppressed.