Rain water sensor and its use

A sensor, rainwater technology, applied in the direction of material capacitance, etc., can solve the problems of poor versatility and high price, and achieve the effect of easy popularization and simple structure

Inactive Publication Date: 2006-01-11
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the automatic wipers installed on cars at home and abroad basically use photoelectric rain sensors. The disadvantages of this type of device are that the price is relatively high and the versatility is not good. Tailor-made for differences in mounting angles

Method used

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  • Rain water sensor and its use
  • Rain water sensor and its use
  • Rain water sensor and its use

Examples

Experimental program
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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:

[0018] like figure 1 As shown, the output signal of the rain sensor and its signal conditioning circuit 1 is connected to the input of the signal conditioning circuit, the output of the signal conditioning circuit is connected to the input of the A / D conversion circuit 2, and the A / D conversion The output end of the circuit 2 is connected with the control end and the I / O port of the microprocessor 3, and the I / O pin of the microprocessor 3 is connected with the input end of the wiper motor speed regulating circuit 5.

[0019] figure 2 , image 3 , Figure 4 The rain sensor shown in is composed of two groups of metal mooring bars 9, 11 attached to the surface of the insulating material base plate 8 and an insulating waterproof layer 10 attached to the surface of the two groups of metal mooring bars. 11 constitutes the two poles of the capacitor, and...

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Abstract

The present invention relates to a rainwater sensor. It is formed from two groups of metal foil strips attached to an insulant baseplate surface and insulating water-proofing layer attached to the surface of said two groups of metal foil strips. Said two groups of metal foil strips are formed into two electrodes of capacitor. Said invention also provides the application of the above-mentioned rainwater sensor in preparation of automatic wiper controller. Besides, said invention also provides its working principle.

Description

technical field [0001] The present invention relates to a rain sensor and its use. Background technique [0002] It is an inevitable trend for automatic wipers to replace traditional manual wipers on mid-to-high-end cars. In recent years, the automatic wipers installed on domestic and foreign cars basically use photoelectric rain sensors. The disadvantages of this type of device are that the price is high and the versatility is not good. The control software of the device needs to be based on the model, the material of the windshield and the The difference in installation angle is tailored. SUMMARY OF THE INVENTION [0003] The present invention provides a rain sensor with simple structure and capable of sensing the magnitude of rainfall and its application. [0004] The technical solution provided by the present invention is: a rain sensor, which is composed of two groups of metal dams attached to the bottom surface of an insulating material and an insulating waterproof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
Inventor 熊昌仑邓华高建新
Owner WUHAN UNIV
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