Calibration-free method for fuel oil measuring system
A measurement system, calibration-free technology, applied in the direction of measuring device, liquid/fluid solid measurement, liquid level indicator for physical variable measurement, etc., to meet the requirements of fuel oil measurement accuracy, easy to manage the state uniformly, and convenient to use and maintain.
Pending Publication Date: 2021-05-07
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is: the embodiment of the present invention proposes a fuel measurement system calibration-free method to solve the current problem that each machine needs to perform zero-to-full capacitance value calibration after leaving the factory or replacing the components of the fuel measurement system
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
[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0035] In the background technology, at present, after each machine leaves the factory or replaces the components of the fuel measurement system, it needs to calibrate the zero-to-full capacitance value.
[0036] For aircraft with a small fuel load, although it is possible to refill and drain the calibration to eliminate the difference to meet the fuel measurement accuracy requirements, it takes a lot of human resources to perform zero-full capacitance value calibration; for aircraft with a large fuel load, refill Oil drain calibration is a huge workload, time-consuming and l...
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 calibration-free method for a fuel oil measuring system. The method comprises the following steps: controlling the consistency of fuel oil measuring components, and adding and discharging oil on a plurality of aircrafts for the first time to obtain zero and full values of all oil quantity sensors in each airplane; comparing the zero-full values of all the oil sensors in the airplane, finding out the difference between the zero-full values, and carrying out compensation calculation to obtain a standard zero-full value; and for all fuel oil measuring computers in the fuel oil measuring system, using a standard zero full value as a basis for calculating the oil immersion height of an oil quantity sensor to realize a calibration-free function of the fuel oil measuring system. By adopting the technical scheme provided by the invention, zero-full calibration is not needed for each machine, oil adding and discharging operation is not needed, time and labor are saved, use and maintenance are convenient, state unified management is easy, the problem of oil adding and discharging calibration in fuel oil measurement is solved, and the requirement for fuel oil measurement precision is met.
Description
technical field [0001] The invention relates to but not limited to the technical field of aircraft fuel measurement, and relates to a method for calibrating a fuel measurement system. Background technique [0002] At present, the most widely used measurement form is the digital capacitive fuel oil measurement system, which is centered on the fuel oil measurement computer and adopts a linear capacitive fuel quantity sensor. The output signal of the fuel quantity sensor reflects its oil immersion height. The fuel quantity is obtained through data processing and calculation of fuel quantity sensor signal and flight attitude signal. [0003] In the existing measurement method, the fuel oil measurement computer calculates the oil immersion height of the fuel quantity sensor according to the calibrated empty capacitance value and full capacitance value. Whether the calibrated empty capacitance value and full capacitance value are accurate directly affects the accuracy of fuel oil ...
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): G01F23/26
CPCG01F23/263
Inventor 张兵张引蒋军昌林厚焰
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA