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Vacuum degree sensor suitable for plateau

A vacuum sensor and plateau technology, applied in the field of automotive sensors, can solve problems such as failure of the power assist system, the brakes cannot be stepped on, and the work requirements of the power assist system cannot be met.

Inactive Publication Date: 2016-03-23
黄山迈普汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the atmospheric pressure environment of 60Kpa, the actual controlled relative vacuum degree is -10Kpa~-30Kpa. This vacuum degree cannot meet the working requirements of the booster system, which leads to the failure of the booster system and the brakes cannot be stepped on.

Method used

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  • Vacuum degree sensor suitable for plateau
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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be...

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Abstract

The invention relates to a vacuum degree sensor suitable for the plateau. The vacuum degree sensor comprises a connector, an absolute pressure chip, a relative pressure chip, a PCB, electronic elements, a first sealing ring, a second sealing ring and a stainless steel shell. The absolute pressure chip and the relative pressure chip are welded on the front and back surfaces of the PCB. The electronic elements are welded on the front and back surfaces of the PCB so as to form a functional circuit. The completely welded PCB is inserted in the connector so that the surface of the absolute pressure chip is enabled to be arranged in the cavity of the connector and welded with the power supply and signal terminal of the connector. The first sealing ring and the second sealing ring are assembled on the stainless steel shell and then the stainless steel shell and the completely assembled connector are assembled and fixed through crimping. The technical problems that present new energy vehicle brake servo systems cannot safely work in the region of low atmospheric pressure like the plateau region no matter using a single relative pressure sensor or an absolute pressure sensor can be solved.

Description

technical field [0001] The invention relates to the field of automotive sensors, in particular to a vacuum sensor suitable for plateaus. Background technique [0002] At present, the domestic new energy vehicle brake servo system uses a single absolute pressure sensor or a single relative pressure sensor to detect the vacuum degree of the vacuum tank. Since this single sensor control cannot automatically detect the current atmospheric pressure, it can only use the same set of control data under different atmospheric pressures. Due to China's vast land and abundant resources, the atmospheric pressure in some areas is very different from the standard atmospheric pressure, even less than 60Kpa. In such an environment, conventional systems using a single sensor can fail or cause damage to the motor. [0003] For example, the working pressure of the vacuum tank is generally controlled at a relative vacuum degree of -50Kpa to -70Kpa, that is, the relative vacuum degree is less th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L21/00
CPCG01L21/00
Inventor 吴强刘新邓商福
Owner 黄山迈普汽车部件有限公司