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An anti-cheating device for fuel dispensers that can work with power off

A fuel dispenser and anti-cheating technology, which is applied in the directions of dispensing devices, special dispensing devices, liquid dispensing, conveying or transferring devices, etc., can solve the problems of changing the metering motherboard chip of the fuel dispenser or software cheating, so as to maintain legitimate rights and interests, and is beneficial to The effect of promoting application and ensuring market order

Inactive Publication Date: 2017-11-10
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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  • An anti-cheating device for fuel dispensers that can work with power off
  • An anti-cheating device for fuel dispensers that can work with power off
  • An anti-cheating device for fuel dispensers that can work with power off

Examples

Experimental program
Comparison scheme
Effect test

example 1

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

example 2

[0056] Calculation example 2: θ saved by monitor 5 before power failure off is 25.53 degrees, the angular position θ read by the monitor 5 after power on again on is 25.42 degrees, then calculated from formula (4) Δθ=-0.11°th . The monitor 5 will judge that the oil quantity output of the fuel tanker does not change when the power is cut off. The small change of the measured angular position may be caused by factors such as the temperature drift of the resistance value of the angle sensor during the power outage, the small fluctuation of the resistance value caused by the small mechanical vibration of the fuel dispenser during the power outage, or the random error of the two measurements before and after the power outage.

example 3

[0057] Calculation example 3: θ saved by monitor 5 before power failure off is 25.53 degrees, the angular position θ read by the monitor 5 after power on again on is 26.74 degrees, then calculated from formula (4) Δθ=1.21°=0.021(rad)>θ th . Then, ΔV=4.31L can be calculated from formula (8). This indicated that there was a change in the fuel output of the tanker when the power was lost, but there was no obvious suspicion of cheating. The monitor can send out abnormal alarm signal and carry out abnormal counting. If similar situations occur repeatedly in a row, the monitor will judge and send out an abnormal cumulative alarm signal and lock the tanker, waiting for the metering department to re-check 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 the economy and the improvement of living standards, motor vehicles have become a necessity of daily life. The increase in car ownership has led to a continuous increase in the society's demand for gasoline consumption, and various gas stations and fuel dispensers have also emerged as the times require. In order to obtain illegal profits, some criminals will cheat on the fuel measurement during the operation of the tanker. In the link of oil quantity measurement, the common cheating methods and their protection and monitoring measures are as follows: [0003] 1. Cheating by changing the oil quantity signal source through mechanical or physical methods, such as replacing or modifying the spindle turntable of the measuring transducer that outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B67D7/32
Inventor 姚骏刘振凯刘宇杰
Owner SHANGHAI UNIV
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