Non-intrusive temperature monitoring sensor

Abstract

The invention relates to the technical field of cable temperature monitoring and discloses a non-intrusive temperature monitoring sensor, which comprises an insulating shell, a metal temperature sensing base plate, a surface acoustic wave temperature monitoring module and an antenna, wherein a groove is arranged in one end of the metal temperature sensing base plate; the insulating shell is fixedly arranged at the other end of the metal temperature sensing base plate; the sound acoustic wave temperature monitoring module and the antenna are fixedly arranged on the metal temperature sensing base plate inside the insulating shell; and the surface acoustic wave temperature monitoring module is electrically connected to the antenna. The non-intrusive temperature monitoring sensor is reasonableand compact in structure, convenient to use, in direct contact with a heating position and high in data acquisition precision, the cost is reduced without a power supply, and the performance is safeand reliable; the sensor does not need to be manually held to be close to the power supply, so that the risk of electric shock during maintenance due to the fact that a maintainer is in direct contactwith an electrified body is avoided; and meanwhile, the real-time data monitoring of a temperature change state during operation of a switch cabinet is achieved, and the operation state of the switchcabinet can be obtained by analyzing the temperature data in order to provide data support for maintenance.

Description

technical field [0001] The invention relates to the technical field of cable temperature monitoring, and is a non-invasive temperature monitoring sensor. Background technique [0002] Poor contact of the primary-side cable accessory connecting piece of the switchgear and protective equipment will cause a large resistance, and heat will be generated when the current passes, causing the temperature of the local contact surface to gradually increase, and the surrounding materials will heat up, and the oxidation of the terminal contact surface will be accelerated. , the resistance is further increased. When the cable accessories on the primary side of the cable are overheated to a certain extent, it is very easy to cause cable failure, which will seriously threaten the safety of people and equipment. [0003] At present, the general manual temperature inspection method of switchgear has the following defects: [0004] 1. Normally, there will be at least a few hours interval bet...

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Problems solved by technology

[0009] The present invention provides a non-interventional temperature monitoring sensor, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problems of low precision, high cost and potential safety hazards in the existing switch cabinet temperature measurement methods

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