LOW POWER WIRELESS SYSTEM FOR MONITORING OF MANHOLE

摘要

A low-power type wireless system is provided to change a collecting terminal into a pause state again, after checking sensing information of a sensor at a predetermined cycle, by operating a low-power control unit at regular intervals of time in a pause state. A low-power type wireless system is composed of a terminal unit(16) equipped with at least one of an opening and closing sensor(2), a water level sensor(4), and a temperature sensor(6), to detect the internal state of the manhole by using the sensor; a collecting terminal(10) collecting sensing information of the manhole detected by the sensor from the terminal unit and transmitting the collected sensing information to the outside; and a low-power control unit(11) operated at regular intervals of time in a pause state to periodically check the sensing information of the sensor and change the collecting terminal into the pause state again.