A method and system for verifying fuel dispenser

Abstract

The present invention proposes a calibration method and system for a fuel dispenser, and relates to the field of dispenser calibration. The method comprises the following steps: obtaining and recording the gun number and oil product number information of the oil gun to be calibrated in real time; comparing and judging the gun number and oil product number information of the oil gun to be calibrated currently obtained with the gun number and oil product number information of the oil gun to be calibrated previously obtained at a predetermined interval, and obtaining a comparison result; if the comparison result is consistent, proceed to the next step; if the comparison result is inconsistent or the information is interrupted, the calibration is terminated and an alarm message is generated for reminder; then the muzzle temperature information of the oil gun to be calibrated, the calibration refueling method, the oil product temperature in the standard metal measuring vessel, and the liquid level height information of the oil product in the standard metal measuring neck are obtained and used to calculate the oil delivery error value of the oil gun to be calibrated, so as to judge the calibration result by using the oil delivery error value of the oil gun to be calibrated. The accuracy of the calibration result can be improved, and cheating in the calibration process can also be effectively prevented.

Description

Technical Field

[0001] The present invention relates to the field of fuel dispenser calibration, and in particular to a calibration method and system for a fuel dispenser. Background Art

[0002] The calibration of fuel dispensers is related to the fairness of people's livelihood measurement and the maintenance of the legitimate rights and interests of operators and consumers. In the prior art, the measurement parameters required to be collected during the calibration process rely on traditional measuring instruments and collection devices, which are obtained through manual reading. The parameter collection process is relatively cumbersome, and there are large differences in the manual reading process, and the error rate fluctuates significantly. In addition, during the calibration process, it is not easy to promptly discover large errors or cheating in the calibration process. Therefore, there is an urgent need for a method and system that can accurately and quickly calibrate fuel dispensers, and can promptly and effectively discover calibration errors and cheating. Summary of the invention

[0003] The object of the present invention is to provide a method and system for calibrating a fuel dispenser, which can realize intelligent calibration of the fuel dispenser to be calibrated, improve the accuracy of the calibration results, and effectively prevent cheating during the calibration process.

[0004] The embodiment of the present invention is achieved as follows:

[0005] In a first aspect, an embodiment of the present application provides a method and system for calibrating a fuel dispenser, which comprises the following steps:

[0006] Obtain and record the oil gun number and oil product number information to be tested in real time;

[0007] Compare and judge the gun number and oil product number information of the oil gun to be tested currently obtained with the gun number and oil product number information of the oil gun to be tested obtained last time at a predetermined interval to obtain a comparison result;

[0008] If the comparison results are consistent, proceed to the next step. If the comparison results are inconsistent or the information is interrupted, the verification is terminated and an alarm message is generated to remind you.

[0009] Obtain and use the muzzle temperature information of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal vessel to calculate the oil delivery error value of the oil gun to be tested;

[0010] The calibration result is obtained using the oil delivery error value of the oil gun to be calibrated.

[0011] In some embodiments of the present invention, the above-mentioned step of real-time acquisition and recording of the gun number and oil product number of the oil gun to be tested specifically includes:

[0012] A passive RFID electronic tag containing the corresponding gun number and oil product number of the oil gun is set on the oil gun to be tested;

[0013] The passive RFID electronic tag is identified by the RFID electronic tag reader to obtain and record the gun number and oil product number information of the oil gun to be inspected.

[0014] In some embodiments of the present invention, the above-mentioned step of obtaining and recording the information of the gun number and the oil product number of the oil gun to be tested in real time also includes the following steps:

[0015] Ground the anti-static grounding clip of the standard metal measuring instrument;

[0016] Obtaining circuit working status information in a standard metal measuring instrument;

[0017] If the circuit working status information is a fault state, a fault prompt message is generated and sent to the display device for display. If the circuit working status information is a normal state, the calibration refueling method is selected, and then fuel is injected into the standard metal measuring vessel through the oil gun to be calibrated.

[0018] In some embodiments of the present invention, the above step of obtaining the test result by using the oil delivery error value of the oil gun to be tested further includes the following steps:

[0019] Return the fuel filled into the standard metal measuring vessel to the tank.

[0020] In some embodiments of the present invention, the step of returning the fuel filled into the standard metal measuring vessel to the tank specifically includes:

[0021] Obtain the anti-static grounding connection information of the standard metal measuring instrument and transmit it to the main control circuit;

[0022] If the ground connection information received by the main control circuit is normal grounding, the main control circuit controls the fuel to return to the tank.

[0023] In some embodiments of the present invention, the above-mentioned obtaining the liquid level information of the fuel added to the calibration in the standard metal measuring vessel to obtain a reading;

[0024] Using formula V B = (reading - number) × graduation value / 1000 + 20 to calculate the standard volume V of the fuel added at 20°C B ;

[0025] Get the temperature information of the fuel added for verification B ℃ and the temperature information of the fuel added to the nozzle of the oil gun to be tested t J ℃;

[0026] Using formula V Bt =V B[1+β Y (t J -t B )+β B (t J -20)] to calculate the fuel added for verification at the test temperature t J Actual volume value V at ℃ Bt , where β Y and β B They are the volume expansion coefficient of the fuel to be filled and the volume expansion coefficient of the material used for the tank body of the standard metal measuring vessel;

[0027] Using the formula Calculate the error value E of the oil delivery volume of the fuel dispenser to be tested V , where V J The oil gun to be tested is at the test temperature t J Indicated volume values ​​at °C.

[0028] In a second aspect, an embodiment of the present application provides a fuel verification system for a fuel dispenser, comprising:

[0029] The oil gun detection module is used to obtain and record the oil gun number and oil product number information to be tested in real time;

[0030] The oil gun comparison module is used to compare and judge the gun number and oil product number information of the oil gun to be tested currently obtained with the gun number and oil product number information of the oil gun to be tested obtained last time at a predetermined interval to obtain a comparison result;

[0031] The alarm module is used to enter the next step if the comparison results are consistent, and to end the verification and generate an alarm message for reminder if the comparison results are inconsistent or the information is interrupted;

[0032] The calculation module is used to obtain and use the information of the muzzle temperature of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height of the oil in the standard metal measuring neck in the testing device to calculate the oil delivery error value of the oil gun to be tested;

[0033] The calibration module is used to obtain the calibration result using the oil delivery error value of the oil gun to be calibrated.

[0034] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory for storing one or more programs; and a processor. When the one or more programs are executed by the processor, the method described in any one of the first aspects is implemented.

[0035] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method as described in any one of the above-mentioned first aspects.

[0036] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0037] By acquiring and recording the gun number and oil product number of the oil gun to be inspected in real time, it is used to determine whether the gun number of the inspected oil gun and the corresponding oil product number are consistent with the system preset information, and to determine whether other oil guns are used to replace the inspected oil gun for oil filling, thereby effectively preventing cheating during the inspection process. In addition, the muzzle temperature information of the oil gun to be inspected, the inspection refueling method, the oil temperature in the standard metal measuring vessel, and the oil level height information in the standard metal measuring neck are obtained and used to calculate the oil delivery error value of the oil gun to be inspected, so as to use the oil delivery error value of the oil gun to be inspected to judge the inspection result, which can effectively avoid the large errors, time-consuming and labor-intensive problems in manual data reading and manual calculation, and realize high-precision and low error rate fluctuation inspection of fuel dispensers. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 This is a flow chart of an embodiment of a verification method for a fuel dispenser according to the present invention;

[0040] Figure 2 A specific flow chart of the steps of real-time acquisition and recording of the gun number and oil product number information of the oil gun to be tested in the embodiment of the present invention;

[0041] Figure 3 A flow chart of another embodiment of a verification method for a fuel dispenser according to the present invention;

[0042] Figure 4 A flow chart of another embodiment of a verification method for a fuel dispenser according to the present invention;

[0043] Figure 5 It is a specific flow chart of the steps of returning the fuel filled into the standard metal measuring vessel to the tank in an embodiment of the present invention;

[0044] Figure 6 A specific flow chart of the steps of obtaining and calculating the oil delivery error value of the oil gun to be tested by using the muzzle temperature information of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal vessel in the embodiment of the present invention;

[0045] Figure 7 It is a structural block diagram of an embodiment of a verification system for a fuel dispenser of the present invention;

[0046] Figure 8 A structural block diagram of an electronic device provided by an embodiment of the present invention.

[0047] Icons: 1. Oil gun detection module; 2. Oil gun comparison module; 3. Alarm module; 4. Calculation module; 5. Verification module; 6. Memory; 7. Processor; 8. Communication interface. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0050] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0055] Example

[0056] See also Figure 1 The method for testing a fuel dispenser comprises the following steps:

[0057] Step S4: Obtain and record the gun number and oil product number information of the oil gun to be tested in real time.

[0058] In the above steps, by acquiring and recording the gun number and oil product number information of the oil gun to be tested in real time, the original data can be provided for subsequent judgment on whether the comparative test object is correct.

[0059] See also Figure 2 The steps of obtaining and recording the information of the oil gun number and oil product number to be tested in real time specifically include:

[0060] Step S4-1: A passive RFID electronic tag containing the corresponding gun number and oil product number information of the oil gun is set on the oil gun to be tested.

[0061] In the above steps, the RFID tag is easy to set up and small in size, and can be set on the oil gun in a concealed manner without affecting its normal operation. In addition, the RFID tag is easy to store data and can store a large amount of data, which is used to write the corresponding gun number and oil product number information of the oil gun, which can be used to identify the corresponding information of the oil gun later.

[0062] Step S4-2: The passive RFID electronic tag is identified by the RFID electronic tag reader to obtain and record the gun number and oil product number of the oil gun to be tested.

[0063] In the above steps, once the passive RFID electronic tag enters the identification area of ​​the RFID electronic tag reader, the RFID electronic tag reader can read the information therein in a timely manner and can dynamically track and monitor its position, so as to well identify the position and working status changes of the oil gun to be calibrated.

[0064] Step S5: at predetermined intervals, the currently acquired information on the number of the oil gun to be inspected and the oil product number are compared with the information on the number of the oil gun to be inspected and the oil product number previously acquired to obtain a comparison result.

[0065] Step S6: If the comparison results are consistent, proceed to the next step. If the comparison results are inconsistent or the information is interrupted, the verification is terminated and an alarm message is generated for reminder.

[0066] In the above steps S5-S6, the gun number and oil product number information of the oil gun to be tested currently obtained are compared and judged with the gun number and oil product number information of the oil gun to be tested obtained last time at preset time intervals, and whether to end the verification and generate corresponding alarm information is determined according to the comparison and judgment results. In this way, the position and working state changes of the oil gun to be tested can be judged in time, so as to timely and effectively find problems with the oil gun to be tested during the verification process. For example, when the comparison results are inconsistent, it may be found that the oil gun to be tested has been replaced, and it is necessary to end the verification and eliminate the corresponding problems; when the information is interrupted, it may be that the refueling condition of the oil gun to be tested may have problems, and it is necessary to end the verification and eliminate the corresponding problems. In addition, the preset time can be set to 5 seconds, so that problems can be found in time without wasting the system calculation amount. Of course, the time can also be set according to actual needs.

[0067] Step S7: Obtain and use the muzzle temperature information of the oil gun to be calibrated, the calibrated refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal vessel to calculate the oil delivery error value of the oil gun to be calibrated.

[0068] In the above steps, by obtaining the required fuel metering parameters and performing calculations on them, the error value of the fuel gun to be calibrated can be obtained, providing real and effective data support for the subsequent analysis and judgment of the fuel dispenser calibration results.

[0069] Specifically, see Figure 6The above-mentioned step of obtaining and using the muzzle temperature information of the oil gun to be calibrated, the calibrated refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal vessel to calculate the oil delivery error value of the oil gun to be calibrated specifically includes:

[0070] Step S7-1: Obtaining the liquid level information of the fuel added to the standard metal measuring vessel for verification and obtaining a reading;

[0071] Exemplarily, in the above steps, the liquid level information can be obtained by adding a liquid level sensor to the standard metal measuring vessel, so as to automatically and accurately obtain the liquid level information of the added fuel and obtain a reading.

[0072] Step S7-2: Using formula V B = (reading - standard number) × graduation value / 1000 + 20 to calculate the standard volume V of the fuel added at 20°C B ;

[0073] Step S7-3: Obtaining the temperature information t of the fuel added for verification B ℃ and the temperature information of the fuel added to the nozzle of the oil gun to be tested t J ℃;

[0074] In the above steps, the temperature information t of the oil gun to be tested can be used J ℃ replaces the temperature information of the fuel added to the muzzle of the oil gun to be tested, so as to test the output oil temperature while ensuring sufficient accuracy.

[0075] Step S7-4: Using formula V Bt =V B [1+β Y (t J -t B )+β B (t J -20)] to calculate the fuel added for verification at the test temperature t J Actual volume value V at ℃ Bt , where β Y and β B They are the volume expansion coefficient of the fuel to be filled and the volume expansion coefficient of the material used for the tank of the standard metal measuring vessel;

[0076] In the above steps, when the fuel used for verification is gasoline, kerosene and light diesel, then β Y The values ​​are 12×10 -4 / ℃、9×10 -4 / ℃ and 9×10 -4 / ℃; When the tank of the standard metal measuring instrument is made of stainless steel, carbon steel, brass and bronze, then β BThe values ​​are: 50×10 -6 / ℃、33×10 -6 / ℃、53×10 -6 / ℃ and 53×10 -6 / ℃.

[0077] Step S7-5: Using formula Calculate the error value E of the oil delivery volume of the fuel dispenser to be tested V , where V J The oil gun to be tested is at the test temperature t J Indicated volume values ​​at °C.

[0078] Step S8: Obtain the calibration result using the oil delivery error value of the oil gun to be calibrated.

[0079] In the above steps, the corresponding test results can be obtained by judging the different oil delivery error values ​​of the oil gun to be tested according to the preset error standards, which can be used to determine whether the metering accuracy of the oil gun to be tested meets the requirements of relevant national standards. The process is simple and effective. For example, when the error of the test result is in the range of (-0.2%, -0.3%) or (+0.2%, +0.3%), the oil delivery error data column of the oil gun on the touch screen can be highlighted with yellow text or pattern; when the error of the test result exceeds plus or minus 0.3%, the oil delivery error data column of the oil gun on the touch screen is highlighted with red text or pattern, and the buzzer is controlled to alarm. This allows the tester to know the test result information in a timely and clear manner.

[0080] It should be noted that the calibration results are uploaded to the cloud storage server via wireless transmission, and the gas station calibration data stored on the server can be accessed and managed online through the mobile APP client developed separately via mobile Internet technology. The mobile APP client can set up a three-level account system, and each has the corresponding functions of the station-level, municipal company-level and provincial company-level clients. The station-level account permissions and functions are as follows:

[0081] 1. After logging into the APP, the device will automatically read the historical test data of all the gas pumps on this site that have been uploaded to the server. The display mode is from top to bottom by default, and the top one is the most recent data. You can also choose to sort in ascending and descending order to quickly find the earliest data; the data is saved for one year, and data after one year will be automatically overwritten or deleted;

[0082] 2. The displayed data includes the oil gun visual temperature, oil temperature in the tank, fuel dispenser indication, standard instrument true value, and fuel dispenser relative error rate extracted by the equipment during the fuel gun inspection;

[0083] 3. The displayed data includes the company name, gas station name, gas station number, fuel gun number and the corresponding fuel product number preset in the equipment; the relative error rate exceeding the standard is displayed in red, and the relative error rate within the standard is displayed in green;

[0084] 4. The data retrieved by date shows the calibration data of all fuel guns corresponding to the calibration date; the data retrieved by gun number shows all the historical test data of the gun number;

[0085] 5. The data retrieved by product number shows the historical test data of all oil gun numbers corresponding to the product number;

[0086] 6. The data retrieved by the fuel dispenser number displays the historical test data of all fuel guns on the fuel dispenser (displayed separately by gun number);

[0087] 7. According to the attention matching self-inspection cycle set in the relative error rate segmentation management requirements of the fuel dispenser, (respectively, 1 month, 15 days, and 7 days), regularly remind gas stations to carry out self-inspection work in a timely manner;

[0088] The permissions and functions of city-level company accounts are as follows:

[0089] 1. Display the names of gas stations that have not completed the self-inspection task, and display the completion progress according to the number of fuel guns at each station. The progress bar displays the number;

[0090] 2. Display the review status of each data, return unqualified data, and fill in the reason for return;

[0091] 3. Display the total number of oil guns corresponding to each product number and the detection status of the month. Those that have been completed within the specified time will be displayed as "detected", and those that have not been detected will be displayed as "not detected". The time limit is based on the segmented attention level of the oil gun error.

[0092] 4. Display the number of fuel guns that have completed testing in the branch's gas stations in the month and their proportion to the total number of fuel guns;

[0093] 5. Display the number of fuel guns that have passed the inspection in the month at the gas stations of the branch company and their proportion to the number of fuel guns that have been inspected and the proportion to the total number of fuel guns;

[0094] 6. Display the number of gas stations under the branch that have completed the inspection task in the month and the proportion of the total number of gas stations under the branch;

[0095] 7. The data retrieved by product number shows the number of fuel guns corresponding to the product number, the detection status of each gun, the relative error rate, the gas station to which it belongs, and the corresponding fuel dispenser number;

[0096] 8. Set up the management level of the branch: management post - department director - deputy manager - manager, and configure the review authority at each level. After the manager completes the review, the data will be displayed as reviewed; the upper level can view the review status of the data at the lower level;

[0097] 9. Configure the account system, and managers at all levels log in with their work numbers as their accounts;

[0098] 10. Configure the account system administrator permissions to manage the account;

[0099] 11. Each branch is configured with a different account system. Each branch can only view the data of the gas stations belonging to its own branch and has no right to view the data of other branches.

[0100] The provincial company account permissions and functions include:

[0101] In addition to having all the permissions of the municipal company account, the provincial company account also has the function of querying the calibration data of the gas guns of all gas stations under its jurisdiction.

[0102] For example, the specific functions of the above mobile phone APP can be shown in the following table.

[0103]

[0104]

[0105]

[0106] See also Figure 3 The above-mentioned step of obtaining and recording the information of the oil gun number and oil product number to be tested in real time also includes the following steps:

[0107] Step S1: grounding the anti-static grounding clamp of the standard metal measuring instrument;

[0108] Step S2: obtaining circuit working status information in the standard metal measuring instrument;

[0109] In the above steps, the circuit working status obtained includes components such as the main control circuit, touch control screen, oil gun identification device, solenoid valve, thermometer, liquid level meter and anti-static grounding alarm circuit, thereby ensuring that the standard metal measuring instrument is in normal working condition and improving the accuracy of calibration.

[0110] Step S3: If the circuit working status information is a fault state, a fault prompt message is generated and sent to the display device for display; if the circuit working status information is a normal state, a calibration refueling method is selected, and then fuel is injected into the standard metal measuring vessel through the oil gun to be calibrated.

[0111] In the above steps, if the circuit working status information is a fault state, a fault prompt information is generated to remind the operator to troubleshoot the fault before the subsequent calibration operation can be carried out to ensure that the standard metal measuring instrument is in a normal state. When the working status information is normal, the operator selects two different refueling methods, quantitative or non-quantitative, to complete the measurement calibration of the fuel dispenser in accordance with relevant regulations.

[0112] See also Figure 4 , after the above step of using the oil emission error value information to obtain the test result, the following steps are also included:

[0113] Step S9: Return the fuel filled into the standard metal measuring vessel to the tank.

[0114] See also Figure 5 The above-mentioned step of returning the fuel filled into the standard metal measuring vessel to the tank specifically includes:

[0115] Step S9-1: Obtain the anti-static grounding connection information of the standard metal measuring instrument and transmit it to the main control circuit.

[0116] Step S9-2: If the ground connection information received by the main control circuit is normal grounding, the main control circuit controls the fuel to return to the tank.

[0117] Exemplarily, the specific implementation process of the above steps S9-1 and S9-2 can be as follows: the operator first connects the anti-static grounding clamp to the grounding flat iron next to the oil unloading port in the oil tank area. When the main control circuit detects that the anti-static grounding connection is normal, the operator clicks the open solenoid valve button in the tank return operation process on the display interface, the solenoid valve opens, and the oil flows into the underground oil tank of the gas station along with the oil unloading hose; if the main control circuit detects that the anti-static grounding connection is invalid, the operator clicks the open solenoid valve button on the system display interface and there is no response, and the oil unloading cannot be carried out. The anti-static grounding connection fault must be eliminated before continuing. This can ensure the safety of the oil return process and prevent oil explosion accidents caused by static electricity release.

[0118] Based on the same inventive concept, please refer to Figure 7 The present invention also proposes a verification system for a fuel dispenser, which specifically includes:

[0119] The oil gun detection module 1 is used to obtain and record the gun number and oil product number information of the oil gun to be tested in real time.

[0120] The oil gun comparison module 2 is used to compare and judge the gun number and oil product number information of the oil gun to be tested currently obtained with the gun number and oil product number information of the oil gun to be tested obtained last time at a predetermined interval to obtain a comparison result.

[0121] The alarm module 3 is used to proceed to the next step if the comparison results are consistent, and to end the verification and generate an alarm message for reminder if the comparison results are inconsistent or the information is interrupted.

[0122] The calculation module 4 is used to obtain and use the muzzle temperature information of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel and the liquid level height of the oil in the standard metal measuring neck in the calibration device to calculate the oil delivery error value of the oil gun to be tested.

[0123] The calibration module 5 is used to obtain the calibration result using the oil delivery error value of the oil gun to be calibrated.

[0124] For the specific implementation process of the above system, please refer to the calibration method for a fuel dispenser provided in an embodiment of the present application, which will not be repeated here.

[0125] See also Figure 8 , Figure 8 A structural block diagram of an electronic device provided in an embodiment of the present invention. The electronic device includes a memory 6, a processor 7 and a communication interface 8, and the memory 6, processor 7 and communication interface 8 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The memory 6 can be used to store software programs and modules, such as program instructions / modules corresponding to a calibration system for a fuel dispenser provided in an embodiment of the present application. The processor 7 executes various functional applications and data processing by executing the software programs and modules stored in the memory 6. The communication interface 8 can be used to communicate signaling or data with other node devices.

[0126] Among them, the memory 6 can be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc.

[0127] The processor 7 may be an integrated circuit chip with signal processing capability. The processor 7 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0128] Understandably, Figure 8 The structure shown is for illustration only. The electronic device may also include Figure 8 More or fewer components as shown, or with Figure 8 Different configurations shown. Figure 8 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0129] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a part of the module, program segment or code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0130] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0131] If the above functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0132] In summary, the embodiment of the present application provides a calibration method and system for a fuel dispenser, which obtains and records the gun number and oil product number information of the oil gun to be calibrated in real time to determine whether the gun number of the calibrated oil gun and the corresponding oil product number are consistent with the system preset information, and whether other oil guns are used to replace the calibration oil gun for oil filling, thereby effectively preventing cheating during the calibration process. In addition, the muzzle temperature information of the oil gun to be calibrated, the calibration refueling method, the oil product temperature in the standard metal measuring vessel, and the oil product liquid level information in the standard metal measuring neck are obtained and used to calculate the oil delivery error value of the oil gun to be calibrated, so as to use the oil delivery error value of the oil gun to be calibrated to judge the calibration result, which can effectively avoid the large errors, time-consuming and labor-intensive problems existing in manual data reading and manual calculation, and realize high-precision and low error rate fluctuation calibration of fuel dispensers.

[0133] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0134] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for calibrating a fuel dispenser, characterized in that: The following steps are involved: Real-time acquisition and recording of the gun number and oil product number of the oil gun to be tested, specifically including: setting a passive RFID electronic tag containing the corresponding gun number and oil product number information of the oil gun on the oil gun to be tested; acquiring and recording the gun number and oil product number information of the oil gun to be tested by identifying the passive RFID electronic tag through an RFID electronic tag reader; Compare and judge the gun number and oil product number information of the oil gun to be tested currently obtained with the gun number and oil product number information of the oil gun to be tested obtained last time at a predetermined interval to obtain a comparison result; If the comparison results are consistent, proceed to the next step. If the comparison results are inconsistent or the information is interrupted, the verification is terminated and an alarm message is generated to remind you. Obtain and use the muzzle temperature information of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal vessel to calculate the oil delivery error value of the oil gun to be tested; The calibration result is obtained using the oil delivery error value of the oil gun to be calibrated.

2. A method for calibrating a fuel dispenser as claimed in claim 1, characterized in that: The step of obtaining and recording the information of the oil gun number and oil product number to be tested in real time also includes the following steps: Ground the anti-static grounding clip of the standard metal measuring instrument; Obtaining circuit working status information in the standard metal measuring instrument; If the circuit working status information is a fault state, a fault prompt message is generated and sent to the display device for display; if the circuit working status information is a normal state, a calibration refueling method is selected, and fuel is then injected into the standard metal measuring vessel through the oil gun to be calibrated.

3. A method for calibrating a fuel dispenser as claimed in claim 1, characterized in that: The step of obtaining the test result by using the oil delivery error value of the oil gun to be tested also includes the following steps: Return the fuel filled into the standard metal measuring vessel to the tank.

4. A method for calibrating a fuel dispenser as claimed in claim 3, characterized in that: The step of returning the fuel filled into the standard metal measuring vessel to the tank specifically includes: Obtain the anti-static grounding connection information of the standard metal measuring instrument and transmit it to the main control circuit; If the ground connection information received by the main control circuit is normal grounding, the main control circuit controls the fuel to return to the tank.

5. A method for calibrating a fuel dispenser as claimed in claim 1, characterized in that: The step of calculating the oil delivery error value of the oil gun to be tested based on the muzzle temperature information of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height information of the oil in the measuring neck of the standard metal measuring vessel specifically includes: Obtaining the liquid level information of the fuel added to the calibration in the standard metal measuring vessel to obtain a reading; Using formula V B = (reading - number) × graduation value / 1000 + 20 to calculate the standard volume V of the fuel added at 20°C B ; Obtain the temperature information of the fuel added for verification, and the obtained temperature value is recorded as t B ℃, and obtain the temperature information of the fuel added to the nozzle of the oil gun to be tested, and the obtained temperature value is recorded as t J ℃; Using formula V Bt =V B [1+β Y (t J -t B )+β B (t J -20)] to calculate the fuel added for verification at t J Actual volume value V at ℃ Bt , where β Y and β B They are the volume expansion coefficient of the fuel to be filled and the volume expansion coefficient of the material used for the tank body of the standard metal measuring vessel; Using the formula Calculate the error value E of the oil delivery volume of the fuel dispenser to be tested V , where V J The oil gun to be tested is at t J Indicated volume values ​​at °C.

6. A verification system for a fuel dispenser, characterized in that: include: The oil gun detection module is used to obtain and record the gun number and oil product number information of the oil gun to be tested in real time, specifically including: setting a passive RFID electronic tag containing the corresponding gun number and oil product number information of the oil gun on the oil gun to be tested; obtaining and recording the gun number and oil product number information of the oil gun to be tested by identifying the passive RFID electronic tag through an RFID electronic tag reader; The oil gun comparison module is used to compare and judge the gun number and oil product number information of the oil gun to be tested currently obtained with the gun number and oil product number information of the oil gun to be tested obtained last time at a predetermined interval to obtain a comparison result; The alarm module is used to enter the next step if the comparison results are consistent, and to end the verification and generate an alarm message for reminder if the comparison results are inconsistent or the information is interrupted; The calculation module is used to obtain and use the information of the muzzle temperature of the oil gun to be tested, the test refueling method, the oil temperature in the standard metal measuring vessel, and the liquid level height of the oil in the standard metal measuring neck in the testing device to calculate the oil delivery error value of the oil gun to be tested; The calibration module is used to obtain the calibration result using the oil delivery error value of the oil gun to be calibrated.

7. An electronic device, characterized in that: include: A memory for storing one or more programs; processor; When the one or more programs are executed by the processor, the method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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