Multi-connected and multi-sector differential capacitance sensor system device

A technology of differential capacitance and system device, applied in the field of sensors, can solve the problem of not meeting the requirements of measuring small angular displacements

Pending Publication Date: 2015-12-16
程有信
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  • Description
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  • Application Information

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Problems solved by technology

Taking the inventor's invention patent, dual differential capacitance angle sensor, patent number; CN2012101035812, as an example, the measurement range is 0-90°, the measurement accuracy is 1′, and the conversion is 10 -5 This is the technical defect of the existing differential capacitive angle sensor

Method used

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  • Multi-connected and multi-sector differential capacitance sensor system device

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Embodiment Construction

[0012] In the embodiment, taking a single set of differential capacitance of a multi-connected multi-sector differential capacitance sensor system device as an example, M=1, N=3, which is an independent 3-fan differential capacitance sensor. like figure 1 Shown: The disc-shaped left fixed fan is the left 3*60-degree fan-shaped fixed electrode, the disc-shaped right fixed fan is the right 3*60-degree fan-shaped fixed electrode, and the disc-shaped middle moving fan is the 3*60-degree fan-shaped moving electrode. The left and right fixed fans are fixed on the outer cylindrical plastic casing with a difference, and the middle moving fan rotates with the hollow common shaft. The hollow common shaft rotates around the connecting shaft of the left and right fixed fan bearings. The radius of the left and right disc-shaped fixed fans is greater than that of the central disc-shaped moving fan. The fan-shaped electrodes of the left and right disc-shaped fixed fans are fixed on the out...

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Abstract

The invention relates to the field of sensors for measuring micro displacement and micro angular displacement caused by micro force and specifically to a multi-connected and multi-sector differential capacitance sensor system device. The multi-connected and multi-sector differential capacitance sensor system device is characterized in that a left fixed fan, a right fixed fan, and a middle movable fan in each group are all discs in each of which conductive sectors and insulated sectors are uniformly arranged at intervals in a sector manner; both sides of each conductive sector are provided with the insulated sectors or both sides of each insulated sectors are provided with the conductive sectors, and the rest conductive sectors and insulated sectors are arranged in the same way; the number of the sectors of each disc is M which is an natural even number more than or equal to 2 but less than or equal to 360; and the angle of each sector is 360 / M degrees. The multi-connected and multi-sector differential capacitance sensor system device has beneficial effects of no mechanical contacts, good anti-interference capability, reliable operation, a long service life, simple manufacture, and low cost, achieves sensitivity as high as 10 to 11, may measure micro displacement and micro angular displacement caused by micro force, such as microgravity mine prospection, earth tide or the like, and can be widely used in the aerospace field.

Description

technical field [0001] The invention relates to the field of sensors for measuring tiny displacements and tiny angular displacements caused by tiny forces, in particular to a multi-connected multi-fan differential capacitive sensor system device. Background technique [0002] In the practice of scientific research and geological exploration technology, the small displacement and small angular displacement caused by small force have great application value, such as microgravity prospecting, earth tide, etc., the order of magnitude is 10 -7 . Taking the invention patent of the inventor, the dual differential capacitance angle sensor, patent number; CN2012101035812, as an example, the measurement range is 0-90°, the measurement accuracy is 1′, and the conversion is 10 -5 This is a technical defect of the existing differential capacitive angle sensors. How to improve the sensitivity of the differential capacitance sensor is the key to this technology. Only changes at the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/241
Inventor 程有信
Owner 程有信
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