Anti-interference capacitive touch diaphragm and method for suppressing interference signals

Abstract

The invention provides an anti-interference capacitive touch diaphragm and a method for suppressing interference signals. The anti-interference capacitive touch diaphragm comprises a diaphragm base layer, wherein a valid touch area and an invalid touch area are arranged above the diaphragm base layer; at least one first touch key is arranged in the valid touch area; a second touch key is arrangedin the invalid touch area; the at least one first touch key and the at least one second touch key are jointly connected to a control panel through an FPC connector and are connected with a touch chipthrough a series resistor on the control panel. The touch key is added on the basis of an existing touch diaphragm, cost cannot be increased, design is flexible, parameter adjustment is easy and convenient, the problem that capacitive touch is interfered by complex electromagnetic signals of a vehicle body and the temperature and humidity environment is effectively solved, and the possibility thattouch does not react or false triggering occurs is reduced; the capacitive touch diaphragm is high in reliability and stability, and can be widely applied to the design of automobile capacitive key touch diaphragms.

Description

Technical field [0001] The invention belongs to the field of electricity, in particular to automotive electrical appliances, and more particularly to an anti-interference capacitive touch diaphragm and a method for suppressing interference signals. Background technique [0002] In the prior art, more and more capacitive touch buttons are used in electronic equipment in the car cockpit to replace the original mechanical buttons, such as car air conditioning panels, steering wheel control panels, door handle control panels and car window controllers. The electromagnetic environment in automobiles is complex and the working environment is harsh. Capacitive touch buttons are very susceptible to electromagnetic interference and temperature and humidity. There will often be unresponsive touch or false triggers. Therefore, it is necessary to improve the anti-interference of capacitive touch buttons. To ensure normal operation. Summary of the invention [0003] In view of the above-menti...

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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an anti-interference capacitive touch diaphragm and a method for suppressing interference signals, which are used to solve the problem that the capacitive touch keys in the prior art are easily interfered by external factors, Problems caused by unresponsive or false triggering of touch

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