Fuel quantity monitoring method and system based on CAN (Controller Area Network) bus

A CAN bus and monitoring system technology, applied in the field of intelligent measuring instruments, can solve problems such as waste of resources, abnormal reduction of oil volume, and prone to leaks, etc., and achieve the effect of improving installation reliability, improving reliability, and reducing failure points

Inactive Publication Date: 2017-03-29
XUCHANG LEIMING ELECTRONICS TECH CO LTD
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Problems solved by technology

[0002] Over the years, transportation companies, logistics companies and other enterprises have adopted a single means of fuel monitoring and management and are prone to mistakes. Accurate statistics of refueling volume, actual consumption statistics, private use of public vehicles, misappropriation of fuel, abnormal reduction of fuel volume, difficulties in fuel supervision, etc. Many other problems cannot be perfectly solved
Leading to waste of resources, bad operating habits of drivers cannot be properly reminded and corrected

Method used

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  • Fuel quantity monitoring method and system based on CAN (Controller Area Network) bus
  • Fuel quantity monitoring method and system based on CAN (Controller Area Network) bus

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Embodiment

[0044] The input range of the power management circuit adopted by the present invention is 9-36VDC, which can adapt to any vehicle power supply and is convenient for access. The power supply adopts anti-reverse circuit, no matter how the positive and negative poles are connected, the equipment can work normally. It is more convenient for non-professional engineers to install and operate.

[0045] Using ARM as the central processing unit, in view of the fluctuation of the fuel volume in the fuel tank caused by sudden start and stop, road bumps and other factors during the operation of the car, the reported fuel volume is continuously compared with the real-time fuel volume, and the reported fuel volume is only in the non-refueling state. It can be smoothly reduced but not increased, so as to eliminate the wrong indication that the fuel volume curve does not drop but rises during the car's driving process due to vehicle bumps. It is this smoothing method that allows vehicle bump...

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Abstract

The invention relates to a fuel quantity monitoring method and system based on a CAN (Controller Area Network) bus. Specific to the problems of difficulty in monitoring and measuring the fuel quantity and the like, a unique algorithm is adopted. A fuel charging event and a fuel stealing event are judged according to the continuity and stability of the fuel quantity change in combination with the unit time change quantity of fuel quantity and a statistical magnitude of the fuel quantity change. When the unit time change quantity is satisfied and the fuel quantity changes continuously and stably, an event trend, namely, a fuel charging trend or a fuel stealing trend is formed. When the trend is formed and the statistical magnitude of the change reaches a certain limit, the occurrence of the fuel charging event or the fuel stealing event can be judged, so that accurate fuel quantity monitoring is finished. High data communication real-time performance is kept among nodes of a network constructed by the CAN bus, so that the reliability and flexibility of the system can be enhanced, and the cost control, reduction of failure points and reliable mounting of a whole automobile fuel consumption system are enhanced greatly.

Description

technical field [0001] The invention relates to the field of intelligent measuring instruments, in particular to a CAN bus-based oil quantity monitoring method and system. Background technique [0002] Over the years, transportation companies, logistics companies and other enterprises have adopted a single means of fuel monitoring and management and are prone to mistakes. Accurate statistics of refueling volume, actual consumption statistics, private use of public vehicles, misappropriation of fuel, abnormal reduction of fuel volume, difficulties in fuel supervision, etc. Many other problems cannot be solved perfectly. It leads to a waste of resources, and the driver's bad operating habits cannot be properly reminded and corrected. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a CAN bus-based oil quantity monitoring method and system, and the present invention can complete precise oil quantity monitoring. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F9/00
CPCG01F9/00
Inventor 许艳华吴晓星刘金峰马斋爱拜张飞刘雨
Owner XUCHANG LEIMING ELECTRONICS TECH CO LTD
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