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Electrostatic detection device

An electrostatic detection and circuit board technology, which is used in measurement devices, electrostatic field measurement, measurement of electrical variables, etc. Effect

Active Publication Date: 2021-10-19
SHENZHEN KESD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing electrostatic detection devices have disadvantages such as low detection accuracy, low intelligence, and small measurement range.

Method used

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0028] According to attached Figure 1-2 Shown:

[0029] A kind of electrostatic detection device, comprises shell, and it comprises upper shell 1 and lower shell 2; The metal shielding case 3 that places in shell, metal support 4 and its induction metal sheet 5 that is arranged on the inside of metal support 4, circuit board 6 and The network ports 7 arranged at both ends of the electrostatic detection device; the induction metal sheet 5, the metal bracket 4, and the metal shield 3 are all installed on the circuit board 6, and the circuit board 6 is fixedly installed on the Described housing; Wherein, the inner side of described metal support 4 is attached with piezoelectric ceramic sheet; Described metal shield 3 is installed on the outside of described metal support 4, and it realizes the function of isolating part interference signal by grounding; Said metal shie...

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Abstract

The invention discloses an electrostatic detection device which comprises a shell, a metal shielding cover arranged in the shell, a metal support, an induction metal sheet arranged in the metal support, a circuit board and net ports formed in the two ends of the electrostatic detection device. The induction metal sheet, the metal support and the metal shielding cover are all installed on the circuit board, and the circuit board is fixedly installed on the shell. A piezoelectric ceramic piece is attached to the inner side of the metal support. And the metal shielding cover and the shell thereof are correspondingly provided with windows as a detection area at the position of the metal induction sheet. The electrostatic detection device can improve the electrostatic detection precision and the electrostatic detection range.

Description

technical field [0001] The invention relates to an electrostatic detection device. Background technique [0002] Existing electrostatic detection devices usually use vibrating capacitive sensors for electrostatic detection, which use piezoelectric ceramics as vibration elements. The vibration capacitor is a vibrating metal sheet. Due to mechanical vibration, the capacitance between the detection electrode and the measured object changes periodically. Under the action of the electrostatic induction of the measured body, the induced voltage on the plate also changes periodically. . The vibrating capacitive sensor senses the electrostatic electric field through the alternating capacitance to measure the electrostatic potential. The principle is that the change of the capacitance C of the plate capacitor placed in the electrostatic field causes the change of the charge on the plate to generate a weak signal, which can be reused The weak signal detection circuit amplifies the s...

Claims

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Application Information

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IPC IPC(8): G01R29/12G01R29/24
CPCG01R29/12G01R29/24
Inventor 张文奎
Owner SHENZHEN KESD TECH CO LTD
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