An instability detection sensor and packaging method
A technology for detecting sensors and metal inner shells, applied in the field of sensors, can solve the problems of poor anti-interference performance and low voltage resistance, and achieve the effects of improving AC resistance, improving electromagnetic compatibility, protection performance and waterproof and dustproof performance
Active Publication Date: 2021-07-20
MT MICROSYST
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[0004] The purpose of the present invention is to provide an instability detection sensor and a packaging method, aiming at solving the problems of poor anti-interference performance and low withstand voltage of the existing instability detection sensor
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[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] Please also refer to Figure 1 to Figure 3 , an instability detection sensor provided by the present invention will now be described. The instability detection sensor includes a metal shell 1, a metal inner shell 2, and a circuit unit 5, wherein a side of the metal shell 1 is provided with a first opening 13 and the side is connected with a socket for encapsulating the first opening 13.
[0042]The first cover 11; the metal inner shell 2 is arranged inside the metal outer shell 1, and there is a preset gap between the metal inner shell 2 and the metal outer...
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The invention provides an instability detection sensor and a packaging method, which belong to the technical field of sensors. An instability detection sensor includes a metal shell, a metal inner shell, and a circuit unit. One side of the metal shell is provided with a first opening and the side A first cover for enclosing the first opening is connected; the metal inner shell is arranged inside the metal outer shell, and there is a preset gap between the metal inner shell and the metal outer shell; the side of the metal inner shell facing the first cover is provided with a second opening , and the side is connected with a second cover for encapsulating the second opening; the circuit unit is fixed on the inner wall of the metal inner shell, and is provided with a signal line that passes through the side wall of the metal inner shell and the side wall of the metal outer shell in turn. cable, the signal cable is used for electrical connection with the signal processor; when the second cover encapsulates the second opening and the first opening is upward, the preset gap is filled with liquid first silicone rubber, and after the first silicone rubber is cured It is used to fully cover the metal inner shell and insulate and support it in the metal outer shell.
Description
technical field [0001] The invention belongs to the technical field of sensors, and more specifically relates to an instability detection sensor and a packaging method. Background technique [0002] With the rapid development of high-speed railway transportation and the continuous improvement of its speed, the real-time monitoring of its operation safety and comfort has become the primary task. Due to the complex structure of the rail vehicle, the harsh working environment, and the complex electromagnetic environment, it is necessary to design a system that can work reliably in a complex environment to monitor the running status of the vehicle safely; due to the particularity of the structure of the rail vehicle, the monitoring of the rail vehicle is the most It is important to monitor the state of the bogie in real time. [0003] The detection quality of the bogie instability detection device and its dependence on the reliability of the instability detection sensor. Howev...
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IPC IPC(8): G01D11/00G01D11/24G01D11/26
CPCG01D11/00G01D11/245G01D11/26
Inventor 郑七龙张永胜杨拥军吝海锋卞玉民
Owner MT MICROSYST