Piezoresistive high-precision fuel quantity sensor for automobiles and engineering machinery
An oil quantity sensor and engineering machinery technology, which is applied in the direction of displaying the liquid level indicator through pressure measurement, can solve the problems of poor structural reliability and low measurement accuracy of the oil quantity sensor, and achieve the effect of avoiding impact
Pending Publication Date: 2018-03-06
安徽江天云控技术股份有限公司 +2
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In order to overcome the above disadvantages, the object of the present invention is to provide a piezoresistive high-precision oil quantity sensor for automobiles and construction machinery, which mainly solves the problems of low measurement accuracy and poor structural reliability of the current oil quantity sensor
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 Construction
[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] as attached Figure 1-5 Shown: a piezoresistive high-precision oil quantity sensor for automobiles and engineering machinery according to the present invention, mainly including: drain bolts, guide rings, core shells, lock nuts, signal lead wires, amplifying circuits and signal Collect core body, wherein:
[0021] Drainage bolt: Drainage bolt mainly plays the role of buffering and drainage. It is provided with a drainage hole, a central through hole and a bottom through hole. The drainage hole and the bottom through hole are parallel and are respectively located on the upper and lower sides of the drainage bolt. The drainage hole, the bottom The through holes are respectively perpendicular to the central through hole, and the gasoline and diesel in the fuel tank are guided to the guide ring through the drainage hole on the top of the drainage bolt through the c...
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 discloses a piezoresistive high-precision fuel quantity sensor for automobiles and engineering machinery. The piezoresistive high-precision fuel quantity sensor comprises a signal outgoing wire, an amplifying circuit and a signal acquiring core body, and is characterized in that one end of the amplifying circuit is the signal outgoing wire; the signal outgoing wire can be connected with a vehicle-mounted instrument and a multifunctional terminal; the other end of the amplifying circuit is connected with the signal acquiring core body through a copper wire; the signal acquiring core body is a semiconductor pressure thermistor. According to the piezoresistive high-precision fuel quantity sensor, based on a piezoresistive effect of a semiconductor material, a device produced ona semiconductor material substrate through a diffused resistor is used as the signal acquiring core body; stress change of the core body is measured as an exciting signal, so that impact of oil on thesignal acquiring core body is avoided, and measuring precision is improved by 5 to 10 times compared with that of a floater measuring mode. Meanwhile, a tested signal is outputted to equipment with different types according to the difference of vehicular equipment, and remote wireless communication can be realized by GPRS (General Packet Radio Service).
Description
technical field [0001] The invention relates to the technical field of oil quantity sensors, in particular to a piezoresistive high-precision oil quantity sensor for automobiles and engineering machinery. Background technique [0002] Existing fuel quantity sensors are mainly divided into two categories. [0003] One is passive measurement, which uses the principle of buoyancy of the liquid to measure the change of the liquid level by changing the resistance value through the change of the mechanical structure. , Control the on-off of the dry reed switch, or slide the rheostat to achieve the purpose of changing the resistance value of the circuit. Due to the impact of structural space and the accuracy and structural size of measuring devices (such as reed switches), the measurement results are often discontinuous. In principle, it is difficult to achieve truly high-precision measurement, and its measurement accuracy is generally 5%. ~10% or so; Secondly, since this kind ...
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 IPC IPC(8): G01F23/14
CPCG01F23/14
Inventor 梁增涛李建峰施延刚傅海泉方娇
Owner 安徽江天云控技术股份有限公司