Pressure sensor
A pressure sensor and pressure technology, applied in the direction of measuring fluid pressure, instruments, measuring fluid pressure through electromagnetic components, etc., can solve problems such as difficult long-term and stable operation of electrical parts, harsh working environment of pressure sensors, and increased system costs, etc., to achieve The effect of simple structure, low cost and small volume
Inactive Publication Date: 2019-04-19
UNITED AUTOMOTIVE ELECTRONICS SYST
View PDF10 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, the exhaust gas emitted by the engine has a high temperature and contains corrosive media such as nitrogen oxides and sulfides. Therefore, the working environment of the pressure sensor is harsh
And in conventional pressure sensors, it is difficult to ensure that the electrical part can work stably for a long time in such a harsh working environment
In addition, in order to detect the pressure difference of the GPF and the absolute pressure of the upstream, it is necessary to configure two sets of pressure sensors and corresponding accessories such as connecting pipes and wiring harnesses, which significantly increases the system cost
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0069] figure 1 Shown is an exploded view of the pressure sensor 10 provided by an embodiment of the present invention, as figure 1 As shown, in the measurement environment of automobile exhaust emissions (that is, the erosive measurement environment), the pressure sensor 10 can be used to monitor the pressure difference between the upstream and downstream of the particle trap in real time, and can monitor the particle trap. Downstream pressure, in order to grasp the regeneration timing of the particle trap in time, and trigger the particle trap to enter the regeneration state. At the same time, OBD diagnosis is realized by monitoring the pressure downstream of the particle trap. Here, the particulate filter is installed on the exhaust pipe of the vehicle, and may be a gasoline particulate filter (GPF) or a diesel particulate filter (DPF).
[0070] Structurally speaking, the pressure sensor 10 includes a housing 11 and a pressure measurement unit 12 disposed in the housing 1...
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
Login to View More Abstract
The invention relates to a pressure sensor. The pressure sensor comprises a shell and a pressure measuring unit arranged in the shell, and the pressure measuring unit comprises a ceramic circuit board, a processing circuit, a first sensing element and a second sensing element, and the processing circuit, the first sensing element and the second sensing element are arranged on the ceramic circuit board; the processing circuit is arranged at one side of the ceramic circuit board, the first sensing element and the second sensing element are arranged at the other side, opposite to one side, of theceramic circuit board, the processing circuit is in communication connection with the first sensing element and the second sensing element separately, the first sensing element and the second sensingelement are separately used for sensing pressure of a measuring medium and feeding the pressure back to the processing circuit, and the processing circuit is used for digitalizing the two pieces of received pressure information. The pressure sensor can simultaneously measure two paths of pressure signals, has good medium resistance and can be stably used in an erosive environment for a long term;moreover, the material cost is low, the pressure measuring precision is high, and the shell in use is simple in structure and low in processing cost.
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 the particle emissions of vehicles, particle filters (GPF) have gradually begun to be promoted and applied on gasoline engines. In order to ensure the normal operation of the GPF and meet the requirements of the on-board diagnostic system (OBD), it is necessary to detect the pressure difference between the upstream and downstream of the GPF and the absolute pressure downstream of the GPF. Therefore, GPF pressure sensors are gradually used in vehicles and work in the environment of engine exhaust emissions. [0003] However, the exhaust gas emitted by the engine has a high temperature and contains corrosive media such as nitrogen oxides and sulfides. Therefore, the working environment of the pressure sensor is harsh. And in the conventional pr...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/06G01L9/00
CPCG01L9/00G01L19/0627
Inventor 李希彬高奇帅黄凯
Owner UNITED AUTOMOTIVE ELECTRONICS SYST