Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressure sensor

A pressure sensor and pressure technology, applied in the direction of measuring fluid pressure, instruments, pressure difference measurement between multiple valves, etc., can solve the problems of pressure signal rationality evaluation and pressure signal unacceptability, so as to improve reliability and accuracy High performance, simple structure and convenient use

Pending Publication Date: 2019-11-26
UNITED AUTOMOTIVE ELECTRONICS SYST
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the current pressure sensor can obtain the pressure difference between the upstream and downstream of the particle trap and the downstream pressure, it does not judge the rationality of the pressure signal. etc.), the output pressure signal is not desirable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure sensor
  • Pressure sensor
  • Pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] The present invention will be described in more detail below with reference to schematic diagrams, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.

[0079] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and / or" unless the content clearly dictates otherwise. As used in this specification and the appended claims, the terms "plurality" and "several" are generally used in the meaning includi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pressure sensor, which comprises a pressure measurement component including a circuit board, a processing unit and a detection unit. The processing unit and the detection unit are arranged on the circuit board. The detection unit includes a first MEMS sensing element, a second MEMS sensing element and a third MEMS sensing element; the first MEMS sensing element is used for sensing a first pressure of a first target position; the second MEMS sensing element is used for sensing a second pressure of a second target position; and the third MEMS sensing element is used for sensing the pressure difference between the first target position and the second target position. The processing unit is used for determining whether the three MEMS sensing elements are abnormal ornot according to the first pressure, the second pressure and the pressure difference; if at least one of the three MEMS sensing elements is determined to be abnormal, the processing unit sends out abnormal diagnosis information externally; and if the three MEMS sensing elements are determined not to become abnormal, the processing unit sends the pressure and pressure difference information of thefirst target position and / or the second target position externally. Therefore, the rationality diagnosis of the pressure signals is realized and the reliability and accuracy of pressure measurement are improved.

Description

technical field [0001] The invention relates to the technical field of pressure measurement, in particular to a pressure sensor. Background technique [0002] In order to meet the increasingly stringent emission regulations and reduce vehicle particulate emissions, particulate filters (GPF or DPF) are increasingly being promoted and applied to internal combustion engines. In order to ensure the normal operation of the particle trap and meet the requirements of the on-board diagnostic system (OBD), it is necessary to monitor the pressure difference between the upstream and downstream of the particle trap and the absolute pressure downstream. For this reason, pressure sensors are increasingly used on vehicles and work in the environment of engine exhaust emissions to obtain these pressure values. [0003] Although the current pressure sensor can obtain the pressure difference between the upstream and downstream of the particle trap and the downstream pressure, it does not jud...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01L13/06
CPCG01L13/06G01L15/00G01L27/007G01L19/143G01L19/0038B81B3/0021B81B2201/0264B81B2207/07B81B2207/09
Inventor 李希彬高奇帅黄凯
Owner UNITED AUTOMOTIVE ELECTRONICS SYST