Annular passive contact type built-in temperature measuring device

Abstract

The invention discloses an annular passive contact type built-in temperature measuring device which comprises a U-shaped bracket and a C-shaped bracket. The U-shaped bracket is connected with the C-shaped bracket for forming a similar regular ring. The U-shaped bracket is internally provided with a chamber in which a temperature measuring mechanism is mounted. The temperature measuring mechanism comprises a PCB, metal blocks and an RFID temperature measuring chip. The PCB is provided with a controller. The metal block is fixedly connected with the PCB. The RFID temperature measuring chip is fixed on the PCB and corresponds with the position of the metal block. The RFID temperature measuring chip is connected with an RFID antenna. Furthermore the RFID temperature measuring chip is connected with the controller through the RFID antenna. The inside wall of the U-shaped bracket is provided with gaps. The metal blocks extend out of the gaps. The metal blocks are used for contacting with a measured wire core. The RFID temperature measuring chip is used for detecting the temperature of the metal block. The annular passive contact type built-in temperature measuring device realizes passive driving, no requirement for lead connection, and higher measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to an annular passive contact type built-in temperature measurement device. Background technique [0002] With the popularization of smart grid, the application of artificial intelligence gradually replaces the traditional temperature measurement method. In order to ensure the safe and reliable operation of the power grid and prevent various faults caused by excessive cable temperature, it is very important to measure the actual operating temperature of the cable, especially the internal core wire temperature. . Most of the existing technology is to measure the temperature of the outer surface of the cable. The measured object and the sensor are separated by the cable insulation layer, resulting in a large loss of temperature and a large error. The temperature measuring device is prone to accelerated weathering and corrosion in the harsh external environment for a lo...

AI Technical Summary

Problems solved by technology

Most of the existing technology is to measure the temperature of the outer surface of the cable. The measured object and the sensor are separated by the cable insulation layer, resulting in a large loss of temperature and a large error. The temperature measuring device is prone to accelerated weathering and corrosion in the harsh external environment for a long time. , oxidation and other aging failures. In recent years, some new technologies have appeared in the industry such as active wired temperature measurement. The internal battery is used to provide power to maintain temperature measurement. The method of building a sensor at the cable joint and leading it to the outside for detection has two major defects. : First, the battery needs to provide energy to drive, and it is easy to fail to operate due to insufficient power, and it is also difficult to maintain in the later period; second, due to the long lead wire, when the temperature is transmitted to the outside, the loss is large, and the temperature cannot be reflected in time. In addition, it is easy to install Due to the consideration of sex and practicability, its promotion and popularization have been greatly affected

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