Key testing device used for radio frequency electromagnetic field radiated susceptibility test of key type equipment

Abstract

The invention relates to a key testing device used for a radio frequency electromagnetic field radiated susceptibility test of key type equipment. The key testing device comprises two upright posts, wherein the upright posts are distributed at the two sides of a key of to-be-tested equipment, the lower end of each upright post is connected with the to-be-tested equipment, a clamping slot is formedin the upper end of each upright post, a sliding rod is arranged in each clamping slot, the clamping slots in the two upright posts support the two ends of the sliding rod respectively, a hanging bracket is arranged on the sliding rod, an electromagnetic push rod is arranged on the hanging bracket, the lower end of the electromagnetic push rod is connected with an elastic pressure head, and the elastic pressure head corresponds to a key of the to-be-tested equipment. The key testing device provided by the invention can press the key of the to-be-tested equipment, the key is tested in an anechoic chamber, and whether the key can be normally used under the electromagnetic radiation condition is observed, so that a working environment of the tested equipment is really simulated, and accuracyof a result of the radio frequency electromagnetic field radiated susceptibility test is guaranteed.

Description

Technical field: [0001] The invention belongs to the technical field of equipment for electromagnetic compatibility testing, and in particular relates to a key detection device for radio frequency electromagnetic field radiation immunity test of key-type equipment. Background technique: [0002] With the development of industry and information industry in modern society, the surrounding environment is full of electromagnetic noise, so all kinds of electronic equipment need to be tested for electromagnetic compatibility (EMC). Electromagnetic compatibility testing refers to the ability of a device or system to operate in compliance with the requirements in its electromagnetic environment without causing unbearable electromagnetic interference to any equipment in its environment. Electromagnetic compatibility test includes electromagnetic immunity test (EMS) and electromagnetic interference test (EMI). The test aimed at the influence of electromagnetic noise in our surrounding...

AI Technical Summary

Problems solved by technology

However, the electromagnetic radiation in the anechoic chamber is extremely harmful to the human body. Therefore, when performing the radio frequency electromagnetic field radiation immunity test on the device under test, it is strictly forbidden for personnel to enter the anechoic chamber, but for the button-type device under test, the operator If you cannot enter the anechoic chamber to operate the keys, you cannot test the keys of the device under test

[0005] At present, for the equipment under test with lead wires, the length of the lead wires is usually increased, and the keys of the device are led to the anechoic chamber for operation. However, adding the lead wires will change the structure of the device and the lead wires will lead part of the high-frequency radiation to the anechoic chamber, which is harmful to the staff. Radiation is generated. At the same time, due to the increase of the lead length, strictly speaking, the physical structure of the device has been changed, which cannot simulate the actual situation well.

For the buttons fixed on the device under test, these devices cannot be tested by increasing the length of the lead wires, and it is difficult to simulate the real working environment, which affects the accuracy of the test results

Images