Temperature detector

Abstract

The invention discloses a temperature detector. The temperature detector comprises a temperature signal detecting circuit, a temperature signal amplification circuit and a single chip microcomputer. The temperature signal detecting circuit comprises a temperature sensor, a first resistor and a second resistor. The temperature signal amplification circuit comprises an operational amplifier, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor. The sampled temperature value of an electric device is converted to a voltage value through the temperature signal detecting circuit and the voltage value is output to the temperature signal amplification circuit through the temperature signal detecting circuit. The voltage value is amplified through the temperature signal amplification circuit and output to the single chip microcomputer. The input voltage value is processed through the single chip microcomputer, so that the real-time temperature of the electric device is obtained. The temperature of the electric device can be detected in real time, so that the occurrence of electrical fire is prevented and completely eradicated from a source.

Description

technical field [0001] The invention relates to a temperature detection device, in particular to a temperature detection device for controlling and protecting a switch controller. Background technique [0002] The control and protection switch controller has the function of remote automatic control and local manpower control to control and operate, has coordinated and coordinated time-current protection characteristics, and has the function of automatic cooperation between control and protection, and continuous operation after short circuit. It can realize the control and protection of motor load and power distribution load. However, traditional control and protection switch controllers only have basic control functions such as overload long-time delay, short-circuit short-time delay, short-circuit instantaneous, undercurrent, three-phase unbalance, overvoltage and undervoltage protection, etc., and cannot control the main line and electrical equipment. The real-time temper...

AI Technical Summary

Problems solved by technology

However, traditional control and protection switch controllers only have basic control functions such as overload long-time delay, short-circuit short-time delay, short-circuit instantaneous, undercurrent, three-phase unbalance, overvoltage and undervoltage protection, etc., and cannot control the main line and electrical equipment. Real-time temperature detection, resulting in fires caused by electrical equipment due to overheating, and cannot fully protect electrical faults

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