WIRELESS TYPE TEMPERATURE DETECTION SYSTEM FOR DISTRIBUTION BOARD (HIGH VOLTAGE DISTRIBUTION BOARD, LOW VOLTAGE DISTRIBUTION BOARD, PANEL BOARD AND MOTOR CONTROL BOARD)

摘要

The present invention relates to a wireless type temperature detection system for a distribution board, capable of transmitting a call signal to a surface acoustic wave sensor, receiving a reflection signal reflected with respect to the transmitted call signal, wherein a continuous transmission call signal can be transmitted, and consistency can be maintained with respect to the reflection signal reflected from the surface acoustic wave sensor. According to the present invention, the wireless type temperature detection system for a distribution board comprises: a surface acoustic wave sensor; and a calling device generating a call signal to be transmitted to the surface acoustic wave sensor and receiving a reflection wave transmitted from the surface acoustic wave sensor to detect a temperature. The calling device generates a reference frequency, outputs the generated reference frequency under the control of a phase locked loop, generates a first pulse by counting the output reference frequency, generates a second pulse relatively longer than the first pulse to be outputted, generates a call signal using the first pulse, transmits the call signal generated in accordance with a cycle of the outputted second pulse, receives a reflection signal with respect to the transmitted call signal from the surface acoustic wave sensor, and calculates changes in the transmitted call signal and the received reflection signal to detect the temperature.;COPYRIGHT KIPO 2016