Automobile pressure sensor

A pressure sensor, automobile technology, applied in the direction of fluid pressure measurement by changing ohmic resistance, can solve the problems of unstable power line connection, reverse connection of positive and negative power supply, etc., to solve the problem of unstable connection, avoid danger, avoid The effect of working abnormally

Active Publication Date: 2018-09-18
宁波依诺汽车电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automotive pressure sensor to solve the problem in the above-mentioned background art that when installing the power cord, the power cord sleeve rotates with the power cord fixing ring, causing the positive and negative poles of the power supply to be reversed. The bumpy driving of the car can easily lead to unstable connection of the power cord

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a resin-type nano heat-conducting composite material, comprising the following steps:

[0028] Step 1. Weigh a certain mass of epoxy resin and curing agent PSPA, the mass ratio of the two is 2:1, and mix it in a high-speed mixer at 800 r / min for 2 minutes to make the epoxy matrix and curing agent PSPA mix well;

[0029] Step 2, then Al 2 o 3 Add @ZnO core-shell nanofillers to the mixture of epoxy resin and curing agent (mass ratio of filler to epoxy resin is 3:7), and mix again at 1000 r / min for 2 min;

[0030] Step 3. Pour the mixture into a cylindrical mold with a diameter of 30mm coated with oleic acid as a release agent in advance, place the mold in a vacuum drying oven, and draw a vacuum to make the air bubbles in the mixture escape, and set the curing temperature The temperature is 60℃, and the curing time is 4h;

[0031] Step 4. After the curing is completed, demoulding is performed, and the upper and lower surfaces of the cured product...

Embodiment 2

[0036] Step 2, then Al 2 o 3 @ZnO core-shell nanofillers were added to the mixture of epoxy resin and curing agent (mass ratio of filler to epoxy resin 1:2), and mixed again at 1000 r / min for 2 min; the rest of the preparation was the same as in Example 1.

Embodiment 3

[0038] Step 2, then Al 2 o 3 @ZnO core-shell nanofillers were added to the mixture of epoxy resin and curing agent (the mass ratio of filler to epoxy resin was 3:5), and mixed again at 1000 r / min for 2 min; the rest of the preparation was the same as in Example 1.

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PUM

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Abstract

The invention discloses an automobile pressure sensor which comprises a first bolt. One side of the first bolt is provided with a snapping trough. One side of the first bolt is provided with a strainreaction cylinder, and the other side is provided with a power line fixing ring. The center of the first bolt is provided with a through hole. The strain reaction cylinder is internally provided witha strain plate. One side of the strain plate is provided with a metal plate. One end of the strain reaction cylinder is provided with a gasket. A screw is welded at one side of the gasket. One side ofthe power line fixing ring is provided with a fixing plate. According to the automobile pressure sensor, a snapping plate and a sleeve fixing plate are arranged, thereby settling a problem of inverseconnection of the anode and the cathode of a power supply caused by rotation of a power line sleeve along with the power line fixing ring, preventing a problem of abnormal operation of the pressure sensor and ensuring normal operation of the automobile. The bolt with the snapping trough is arranged, thereby preventing a problem of dangers of a driver caused by faults of the pressure sensor in automobile driving.

Description

technical field [0001] The invention belongs to the technical field of automobile pressure sensors, and in particular relates to an automobile pressure sensor. Background technique [0002] Automobile pressure sensor is used by Wanhe to control the oil pressure of the brake system with oil pressure booster. It can detect the pressure of the accumulator, the closing or opening signal of the output oil pump and the abnormal alarm of the oil pressure. There are semiconductor strain gauges, which use the characteristic that the resistance of the strain gauge changes when the shape changes. In addition, there is a metal diaphragm, which detects the change of pressure through the metal diaphragm strain gauge, and converts it into an electrical signal and outputs it externally. . [0003] However, the automotive pressure sensors currently on the market cannot meet the requirements of use. When using, when installing the power cord, the power cord sleeve rotates with the power cord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L9/04
CPCG01L9/04
Inventor 童彩琪张光华
Owner 宁波依诺汽车电子有限公司
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