Capacitance sensing type fuel meter

A capacitive sensor and sensing technology, applied in the direction of material capacitance, liquid level indicator for physical variable measurement, etc., can solve the problems of low sensitivity, large zero drift, low seismic capacity, etc., and achieve good seismic performance, high sensitivity, High reliability effect

Inactive Publication Date: 2010-06-16
苟阳明
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, low sensitivity, large error, slow response speed, poor temperature stability, large zero point drift, low shock resistance, poor reliability, and not easy to maintain, maintain and overhaul, making the fuel gauges of many cars seem to be fake.
[0003] In addition, since the measurement accuracy is much lower than the calibration accuracy of the fuel dispenser at the gas station, it is impossible to monitor the amount of refueling in the fuel tank, and the water content in the fuel cannot be measured, so the quality of the fuel cannot be monitored.

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
  • Capacitance sensing type fuel meter
  • Capacitance sensing type fuel meter
  • Capacitance sensing type fuel meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Such as figure 1 Shown in, is the principle block diagram of the present invention, mainly is made up of comparative capacitive sensor group 1, capacitance measuring transmitter 2, and signal processing, calculation, display panel 3.

[0022] The comparative capacitive sensor group 1 such as figure 2 As shown in , it consists of four coaxial tubular electrodes, including: the ground electrode 5, which is used as the common electrode plate of the capacitor bank, is placed between the air dielectric capacitor plate 4 and the fuel dielectric capacitor plate 6; The rate measurement capacitor plate 7 is placed on the outermost layer of the capacitor bank. The four electrode lead wires are insulated from each other and subjected to explosion-proof treatment, and enter the capacitance measuring transmitter 2 through the same round hole.

[0023] The capacitance measuring transmitter 2 is as image 3 As shown in , it consists of three groups of identical capacitance measure...

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 type fuel metering device, in particular to a capacitance sensing type fuel meter. The meter comprises a comparison capacitance sensor group, a capacitance measuring transducer circuit board and a signal processing, calculating and displaying instrument circuit board, wherein the comparison capacitance sensor group is inserted in an oil tank, the capacitance of the sensor group changes with the dielectric constant of a medium between polar plates so that the oil quantity in the oil tank can be obtained by measuring the capacitance value of the measured capacitor. Compared with the existing fuel needle indicator, the meter of the invention has the following beneficial effects: the meter has high precision, sensitivity and reliability, the oil quantity and fuelingcharge of the vehicle-mounted oil tank can be accurately measured, the fueling charge and the fuel quality can be monitored simultaneously; and no mechanical movement is generated and the shock resistant performance is good.

Description

technical field [0001] The invention relates to a fuel metering device, in particular to a capacitance sensing type fuel meter. Background technique [0002] Previously, in the domestic and foreign automobile markets, the measurement of the amount of fuel in the vehicle's fuel tank was almost always carried out with a float-type liquid level sensor. The floating position of the float on the fuel liquid surface was detected and displayed by a pointer instrument. Therefore, low sensitivity, large error, slow response speed, poor temperature stability, large zero point drift, low shock resistance, poor reliability, and difficult maintenance, maintenance and repair make the fuel gauges of many cars seem to be useless. [0003] In addition, since the measurement accuracy is much lower than the calibration accuracy of the fuel dispenser at the gas station, it is impossible to monitor the amount of refueling in the fuel tank, and the water content in the fuel cannot be measured, so...

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): G01F23/26G01N27/22
Inventor 苟阳明
Owner 苟阳明
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap