High-precision fuel dispenser metering system and calibration method thereof

Abstract

The invention belongs to the technical field of fuel metering, and provides a high-precision fuel dispenser metering system and a calibration method thereof.The high-precision fuel dispenser metering system comprises a metering module, a sensor module, a control module, a display module and a calibration module, and the metering module, the sensor module and the control module are electrically connected in sequence; by designing the metering module, the sensor module, the control module, the display module and the calibration module, accurate measurement of the fuel oil filling amount is achieved, the metering accuracy reaches + / -0.2%, the repeatability error does not exceed 0.15%, and the metering precision and stability are greatly improved; meanwhile, the system can monitor operation parameters such as oil temperature, flow and pressure in real time, accurate control is carried out according to the parameters, the influence of the oil temperature on the metering accuracy is eliminated, and the performance and stability of the system are further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel metering, in particular to a high-precision fuel dispenser metering system and a calibration method thereof. Background Art

[0002] In the fuel retail industry, the metering accuracy of fuel dispensers is crucial, as it is directly related to the rights and interests of consumers and the reputation of operators.

[0003] However, existing fuel dispenser metering systems generally have problems such as low metering accuracy and susceptibility to environmental factors. Especially under complex working conditions such as oil temperature changes and flow fluctuations, the metering error of traditional fuel dispensers often increases, making it difficult to meet the needs of high-precision metering. At the same time, most of the calibration methods for existing fuel dispensers use manual operations, which are not only inefficient but also difficult to ensure the accuracy and consistency of the calibration results.

[0004] To this end, those skilled in the art have proposed a high-precision fuel dispenser metering system and a calibration method thereof to solve the problems raised by the background art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a high-precision fuel dispenser metering system and a calibration method thereof to solve the problems existing in the prior art.

[0006] A high-precision fuel dispenser metering system, comprising:

[0007] Metering module, used to accurately measure the amount of fuel added, with a measurement accuracy of ±0.2% (at 5 liters of fuel), and a repeatability error of no more than 0.15%;

[0008] The sensor module is used to detect various operating parameters of the fuel dispenser, including oil temperature, flow rate, pressure, etc.;

[0009] A control module, used for receiving the signal from the sensor module and controlling the metering module according to a preset algorithm to achieve high-precision fuel metering;

[0010] Display module, used to display information such as refueling quantity, unit price, total price, etc. in real time;

[0011] The calibration module is used to calibrate the metering module regularly to ensure the metering accuracy.

[0012] Preferably, the metering module includes a flow measurement transducer and an encoder. The flow measurement transducer adopts a high-precision sensor. In order to improve the measurement accuracy, a flow measurement and error correction algorithm is introduced to perform real-time correction on the measurement results based on the actual measured flow data and combined with the sensor characteristics, thereby reducing the error; the encoder is used to convert the flow signal into a digital signal.

[0013] Preferably, the sensor module also includes a temperature sensor for detecting the fuel temperature at the fuel gun nozzle in real time and sending the temperature signal to the control module. The temperature sensor introduces a temperature compensation algorithm to perform temperature compensation on the measurement result.

[0014] Preferably, the control module adopts advanced integrated circuit technology. Integrated circuit technology is a technology that integrates a large number of electronic components on a tiny silicon chip to form a complex circuit system. It has the characteristics of efficient design, precision manufacturing, advanced packaging and rigorous testing. It can greatly improve the performance of electronic equipment and promote innovation and development in related fields. It has the characteristics of explosion-proof, strong anti-interference, stable and reliable operation, and has power outage data protection function.

[0015] Preferably, the preset algorithm introduces a PID control algorithm to dynamically adjust the metering module to ensure metering accuracy.

[0016] Preferably, in the calibration module, in order to achieve regular calibration of the metering module, an adaptive calibration algorithm is introduced to automatically adjust the calibration parameters according to historical calibration data and current usage, thereby ensuring metering accuracy.

[0017] Preferably, in order to improve the stability and anti-interference ability of the system, a filtering algorithm may be introduced in the data processing process to effectively remove noise and interference signals, thereby improving the accuracy and reliability of the measurement data.

[0018] Preferably, a calibration method for high-precision fuel dispenser metering, using the above-mentioned high-precision fuel dispenser metering system, comprises:

[0019] S1. Turn off the power of the fuel dispenser to ensure safety;

[0020] S2. Calibrate the metering module of the fuel dispenser using a standard meter, compare the readings of the standard meter and the metering module of the fuel dispenser, and if there is an error, adjust the metering module of the fuel dispenser according to the error value;

[0021] S3, repeat step S2 until the accuracy of the metering module of the fuel dispenser meets the requirements;

[0022] S4. Turn on the power of the fuel dispenser and conduct an actual fueling test to verify the calibration effect.

[0023] A processor is configured to execute a high-precision fuel dispenser metering system according to the above.

[0024] A computer-readable storage medium stores a computer program, which implements the above-mentioned high-precision fuel dispenser metering system when executed by a processor.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention realizes accurate measurement of fuel filling amount by designing a high-precision fuel dispenser metering system. Its metering accuracy reaches ±0.2% (when the fuel filling amount is 5 liters), and the repeatability error does not exceed 0.15%, which greatly improves the metering accuracy and stability; at the same time, the system introduces a flow measurement and error correction algorithm, which can perform real-time correction on the measurement results according to the actual measured flow data and sensor characteristics, further reducing the error.

[0027] 2. The present invention integrates multiple sensors to monitor operating parameters such as oil temperature, flow, pressure, etc. in real time, and feeds these parameters back to the control module, thereby achieving precise control of the refueling process; especially when the oil temperature changes, the system can introduce a temperature compensation algorithm to perform temperature compensation on the measurement results, thereby eliminating the influence of oil temperature on metering accuracy.

[0028] 3. The control module of the present invention adopts advanced integrated circuit technology and has the characteristics of efficient design, precision manufacturing, advanced packaging and strict testing. It not only improves the performance of the system, but also enhances the system's explosion-proof, anti-interference and operational stability. In addition, the control module also has a power outage data protection function, which can protect the metering data from loss in the event of a sudden power outage.

[0029] 4. The calibration module of the present invention introduces an adaptive calibration algorithm, which can automatically adjust the calibration parameters according to historical calibration data and current usage, thereby ensuring the long-term accuracy of the metering module; this automated calibration method not only improves the calibration efficiency, but also reduces the error risk caused by human operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a framework diagram of the high-precision fuel dispenser metering system of the present invention;

[0031] Figure 2 The figure is a flow chart of the high-precision fuel dispenser metering method of the present invention. DETAILED DESCRIPTION

[0032] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Embodiment: The present invention provides a high-precision fuel dispenser metering system, such as Figure 1 As shown, it includes a metering module, a sensor module, a control module, a display module and a calibration module, and the metering module, the sensor module and the control module are electrically connected in sequence:

[0034] Metering module, used to accurately measure the amount of fuel added, with a measurement accuracy of ±0.2% (at 5 liters of fuel), and a repeatability error of no more than 0.15%;

[0035] The sensor module is used to detect various operating parameters of the fuel dispenser, including oil temperature, flow rate, pressure, etc.;

[0036] A control module, used for receiving the signal from the sensor module and controlling the metering module according to a preset algorithm to achieve high-precision fuel metering;

[0037] Display module, used to display information such as refueling quantity, unit price, total price, etc. in real time;

[0038] The calibration module is used to calibrate the metering module regularly to ensure the metering accuracy.

[0039] As can be seen from the above, the system realizes accurate measurement of fuel filling amount by designing metering module, sensor module, control module, display module and calibration module. Its metering accuracy reaches ±0.2% (when refueling 5 liters), and the repeatability error does not exceed 0.15%, which greatly improves the accuracy and stability of measurement. At the same time, the system can monitor the operating parameters such as oil temperature, flow, pressure in real time, and accurately control them according to these parameters, eliminating the influence of oil temperature on metering accuracy, and further improving the performance and stability of the system. In addition, the introduction of the calibration module realizes the regular calibration of the metering module, ensuring the accuracy of long-term use, thereby effectively protecting the rights and interests of consumers and the reputation of operators.

[0040] Furthermore, the metering module includes a flow measurement converter and an encoder. The flow measurement converter uses a high-precision sensor. In order to improve the measurement accuracy, a flow measurement and error correction algorithm is introduced to perform real-time correction on the measurement result according to the actual measured flow data and the sensor characteristics, thereby reducing the error. The formula of the flow measurement and error correction algorithm includes:

[0041] Q c =Q m ×(1+ΔQ);

[0042] Among them, Q c is the corrected flow rate, Q m is the actual measured flow rate, ΔQ is the error correction coefficient calculated based on the sensor characteristics and environmental conditions;

[0043] The encoder is used to convert the flow signal into a digital signal.

[0044] As can be seen from the above, the flow measurement converter in the metering module adopts a high-precision sensor and introduces a flow measurement and error correction algorithm, which can perform real-time correction according to the actual measured flow data and sensor characteristics, thereby greatly reducing the measurement error and improving the measurement accuracy of the fuel filling amount. At the same time, the encoder converts the flow signal into a digital signal, making data processing more convenient and accurate, further enhancing the reliability and stability of the metering module.

[0045] Furthermore, the sensor module also includes a temperature sensor for detecting the fuel temperature at the fuel nozzle in real time and sending the temperature signal to the control module. The temperature sensor introduces a temperature compensation algorithm to perform temperature compensation on the measurement result. The formula of the temperature compensation algorithm includes:

[0046]

[0047] Among them, V c is the volume after temperature compensation, V m is the actual measured volume, ρ r is the fuel density at the reference temperature, ρ a is the fuel density at actual temperature.

[0048] As can be seen from the above, the design of the temperature sensor in the sensor module can detect the fuel temperature at the nozzle in real time, and perform temperature compensation on the measurement results by introducing a temperature compensation algorithm. This effectively eliminates the impact of oil temperature changes on metering accuracy and ensures the accuracy of fuel filling under different oil temperature conditions. Through precise temperature compensation, the system can adjust the measurement volume according to the fuel density at the actual temperature, thereby providing a more stable and reliable metering result.

[0049] Furthermore, the control module adopts advanced integrated circuit technology. Integrated circuit technology is a technology that integrates a large number of electronic components on a tiny silicon chip to form a complex circuit system. It has the characteristics of efficient design, precision manufacturing, advanced packaging and rigorous testing. It can greatly improve the performance of electronic equipment and promote innovation and development in related fields. It has the characteristics of explosion-proof, strong anti-interference, stable and reliable operation, and has power outage data protection function.

[0050] Furthermore, the preset algorithm introduces a PID control algorithm to dynamically adjust the metering module to ensure metering accuracy. The formula of the PID control algorithm includes:

[0051]

[0052] Among them, u(t) is the control output, e(t) is the error signal, K p , K i and K d are the proportional, integral and differential coefficients respectively.

[0053] As can be seen from the above, the PID control algorithm is introduced into the preset algorithm to dynamically adjust the metering module, and the control output can be calculated in real time according to the error signal. Through the comprehensive effect of proportional, integral and differential coefficients, the deviation in the metering process is effectively corrected, thereby ensuring the accuracy and stability of the metering module. The introduction of the PID control algorithm improves the system's response speed and adjustment accuracy to metering errors, allowing the fuel dispenser to maintain high-precision metering performance under different working conditions.

[0054] Furthermore, in the calibration module, in order to realize the regular calibration of the metering module, an adaptive calibration algorithm is introduced to automatically adjust the calibration parameters according to the historical calibration data and the current usage, so as to ensure the metering accuracy. The formula of the adaptive calibration algorithm includes:

[0055] θ new =θ old +α·(Q s -Q m );

[0056] Among them, θ new is the new calibration parameter, θ old is the old calibration parameter, α is the learning rate, Q s is the reading of the standard meter, Q m This is the reading of the fuel dispenser metering module.

[0057] As can be seen from the above, the adaptive calibration algorithm introduced in the calibration module can automatically adjust the calibration parameters according to the historical calibration data and current usage, thus realizing the regular and accurate calibration of the metering module. By continuously learning and optimizing the calibration parameters, the adaptive calibration algorithm ensures that the metering module of the fuel dispenser can maintain a high degree of accuracy at different stages of use, thereby improving the stability and reliability of the entire fuel dispenser metering system. This automated and intelligent calibration method not only improves the calibration efficiency, but also significantly reduces the risk of errors caused by human operation.

[0058] Furthermore, in order to improve the stability and anti-interference of the system, a filtering algorithm can be introduced in the data processing process to effectively remove noise and interference signals, thereby improving the accuracy and reliability of the measurement data. The formula of the filtering algorithm includes:

[0059]

[0060] K k =Pkk-1 H T (HP kk-1 H T +R) -1 ;

[0061] P k (1-K k H)P kk-1 ;

[0062] in, is the state estimate, A is the state transfer matrix, B is the control matrix, u k-1 is the control input, z k is the observation value, H is the observation matrix, R is the observation noise covariance matrix, P kk-1 and P k are the prediction error covariance matrix and the estimation error covariance matrix, respectively, K k is the Kalman gain.

[0063] As can be seen from the above, the introduction of filtering algorithms, such as Kalman filtering, in the data processing process can effectively remove noise and interference signals and improve the accuracy and reliability of measurement data. By using information such as state estimation and prediction error covariance matrix, the filtering algorithm makes the best estimate of the system state, thereby achieving smooth processing of measurement data. The stability and anti-interference of the system are significantly enhanced, so that the high-precision fuel dispenser metering system can maintain high precision and stable operation under various complex working conditions.

[0064] Furthermore, the effects of a high-precision fuel dispenser metering system of the embodiment and an existing fuel dispenser metering system (comparative example) are compared to obtain the following table:

[0065]

[0066]

[0067] It can be seen from the above table that the high-precision fuel dispenser metering system of this embodiment is superior to the existing fuel dispenser metering system in terms of metering accuracy, oil temperature influence, sensor configuration, control algorithm, calibration method, data processing and system stability, and has higher accuracy, stability and reliability.

[0068] A method for calibrating high-precision fuel dispenser metering, such as Figure 2 As shown, the high-precision fuel dispenser metering system described above includes:

[0069] S1. Turn off the power of the fuel dispenser to ensure safety;

[0070] S2. Calibrate the metering module of the fuel dispenser using a standard meter, compare the readings of the standard meter and the metering module of the fuel dispenser, and if there is an error, adjust the metering module of the fuel dispenser according to the error value;

[0071] S3, repeat step S2 until the accuracy of the metering module of the fuel dispenser meets the requirements;

[0072] S4. Turn on the power of the fuel dispenser and conduct an actual fueling test to verify the calibration effect.

[0073] Working principle:

[0074] The embodiment of the present application provides an electronic device, which is applicable to the above-mentioned high-precision fuel dispenser metering system, including:

[0075] Memory, used to protect computer programs and data;

[0076] Processor, used to run system programs.

[0077] An embodiment of the present application provides a computer storage medium, which is applicable to the above-mentioned high-precision fuel dispenser metering system, and performs hierarchical confidentiality management on the above-mentioned system and data in accordance with confidentiality management requirements.

[0078] Those skilled in the art will appreciate that the embodiments of the present application may be provided as a system or a computer program product. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0079] The present application is described with reference to the flowcharts and / or block diagrams of the devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0080] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0081] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0082] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0083] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0084] Computer readable media include permanent and non-permanent, removable and non-removable media, and can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory media such as modulated data signals and carrier waves.

[0085] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, commodity 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, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, commodity or device including the elements.

[0086] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high-precision fuel dispenser metering system, characterized in that: include: Metering module, used to accurately measure the amount of fuel added, with a metering accuracy of ±0.2% and a repeatability error of no more than 0.15%; Sensor module, used to detect various operating parameters of the fuel dispenser; A control module, used to receive signals from the sensor module and control the metering module according to a preset algorithm; Display module, used to display the refueling quantity, unit price and total price information in real time; The calibration module is used to perform regular calibration on the metering module.

2. A high-precision fuel dispenser metering system as claimed in claim 1, characterized in that: The metering module includes a flow measurement converter and an encoder. The flow measurement converter adopts a high-precision sensor. In order to improve the measurement accuracy, a flow measurement and error correction algorithm is introduced to perform real-time correction on the measurement results based on the actual measured flow data and combined with the sensor characteristics; the encoder is used to convert the flow signal into a digital signal.

3. A high-precision fuel dispenser metering system as claimed in claim 1, characterized in that: The sensor module also includes a temperature sensor for detecting the fuel temperature at the fuel nozzle in real time and sending a temperature signal to the control module. The temperature sensor introduces a temperature compensation algorithm to perform temperature compensation on the measurement result.

4. A high-precision fuel dispenser metering system as claimed in claim 1, characterized in that: The control module adopts advanced integrated circuit technology.

5. A high-precision fuel dispenser metering system as claimed in claim 1, characterized in that: The preset algorithm introduces a PID control algorithm to dynamically adjust the metering module.

6. A high-precision fuel dispenser metering system as claimed in claim 1, characterized in that: In the calibration module, in order to achieve regular calibration of the metering module, an adaptive calibration algorithm is introduced to automatically adjust the calibration parameters based on historical calibration data and current usage.

7. A high-precision fuel dispenser metering system applicable to any one of claims 1-6, characterized in that: In order to improve the stability and anti-interference of the system, filtering algorithms can be introduced during data processing.

8. A high-precision fuel dispenser metering calibration method, characterized in that: A high-precision fuel dispenser metering system using any one of claims 1 to 7, comprising: S1. Turn off the power of the fuel dispenser to ensure safety; S2. Calibrate the metering module of the fuel dispenser using a standard meter, compare the readings of the standard meter and the metering module of the fuel dispenser, and if there is an error, adjust the metering module of the fuel dispenser according to the error value; S3, repeat step S2 until the accuracy of the metering module of the fuel dispenser meets the requirements; S4. Turn on the power of the fuel dispenser and conduct an actual fueling test to verify the calibration effect.

9. A processor, characterized in that: The invention is configured to implement a high-precision fuel dispenser metering system according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, a high-precision fuel dispenser metering system according to any one of claims 1 to 7 is implemented.

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