Anti-cheating device capable of working during power outage for refueling machine

A fuel dispenser and anti-cheating technology, applied in distribution devices, special dispensing devices, liquid distribution, transportation or transfer devices, etc., can solve problems such as changing the metering motherboard chip of the fuel dispenser or cheating in software, so as to safeguard legitimate rights and interests and protect the market. Order, the effect of improving the ability to prevent cheating

Inactive Publication Date: 2015-04-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Changing the chip or software of the metering board of the tanker to cheat
At present, there is no anti-cheating device in the industry that can effectively monitor the fuel output of the tanker when the tanker is powered off

Method used

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  • Anti-cheating device capable of working during power outage for refueling machine
  • Anti-cheating device capable of working during power outage for refueling machine
  • Anti-cheating device capable of working during power outage for refueling machine

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] Calculation example 1: θ saved by monitor 5 before power failure off 25.53 degrees, the angular position θ read by the monitor 5 after power-on again on Is 30.31 degrees, then Δθ=4.78°=0.083(rad)>θ calculated by formula (4) th . From equation (8), ΔV=17.04L can be calculated. This shows that there is a change in the oil output of the refueling machine when the power is off, and there is a suspicion of cheating. The monitor can issue a cheating alarm signal and lock the tanker, waiting for the metering department to re-verify the tanker.

example 2

[0056] Calculation example 2: θ saved by monitor 5 before power failure off 25.53 degrees, the angular position θ read by the monitor 5 after power-on again on Is 25.42 degrees, then Δθ=-0.11° th . The monitor 5 will determine that there is no change in the oil output of the refueling machine when the power is off. The small changes in the measured angular position may be caused by the temperature drift of the resistance value of the angle sensor during the power failure, the small mechanical vibration of the tanker during the power failure, the small resistance fluctuations, or the random error of the two measurements before and after the power failure.

example 3

[0057] Calculation example 3: θ saved by monitor 5 before power failure off 25.53 degrees, the angular position θ read by the monitor 5 after power-on again on Is 26.74 degrees, then Δθ=1.21°=0.021(rad)>θ th . From equation (8), ΔV=4.31L can be calculated. This shows that there is a change in the oil output of the refueling engine when the power is off, but there is no obvious suspicion of cheating. The monitor can send out abnormal alarm signals and count abnormalities. If similar situations occur multiple times in a row, the monitor will determine that an abnormal cumulative alarm signal is issued and the tanker will be locked, waiting for the metering department to re-verify the tanker or the supplier to repair the tanker.

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Abstract

The invention relates to an anti-cheating device capable of working during power outage for a refueling machine. The anti-cheating device comprises a gear transmission module, an angle sensor, a measuring motherboard and a monitor, wherein the gear transmission module is connected with a flow measuring transducer of the refueling machine and the angle sensor respectively; the measuring motherboard is connected with the angle sensor and the monitor respectively. A rotation angle of a main shaft is monitored by the gear transmission module and the angle sensor kept in mechanical connection with the main shaft of the flow measuring transducer of the refueling machine under the condition of power-on and power-off, and the rotation angle value is measured by the measuring motherboard and is transmitted to the monitor. The monitor is used for judging whether a fuel capacity cheating behavior is implemented by a person during power outage by calculating a fuel capacity change value of the refueling machine before and after power outage. According to the device, large-scale modification is not required to be performed on the existing fuel capacity metering module of the refueling machine, and no influence is caused to normal running of the refueling machine; the technical scheme is simple and convenient, is low in cost and is beneficial to popularization and application.

Description

Technical field [0001] The invention relates to an anti-cheating device for a fuel dispenser, in particular to an anti-cheating device for a fuel dispenser that can be powered off. Background technique [0002] With the development of economy and the improvement of living standards, motor vehicles have become a necessity of daily life. The increase in the number of cars has caused the society's demand for gasoline consumption to continue to increase, and various gas stations and refueling machines have also emerged. In order to obtain illegal profits, some criminals will cheat on fuel metering during the operation of the tanker. In the process of fuel measurement, common cheating methods and their protection and monitoring measures are as follows: [0003] 1. Cheating by changing the oil quantity signal source by mechanical or physical methods, such as replacing or modifying the spindle turntable of the measuring transducer that outputs oil quantity pulses. This kind of cheating...

Claims

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Application Information

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IPC IPC(8): B67D7/32
Inventor 姚骏刘振凯刘宇杰
Owner SHANGHAI UNIV
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