Instrument verification system, method, apparatus, and instrument

Abstract

The application provides an instrument verification system, method, device and instrument, wherein the system comprises: a control module configured to acquire an accumulated quantity of an instrument to be tested when receiving a verification request; a display module connected to the control module and configured to acquire the accumulated quantity and update a display result according to the current accumulated quantity every interval of a preset time length; the preset time length is less than a refresh cycle of a metering display module of the instrument to be tested; the control module is further configured to receive the display result through a shooting module, determine a test change quantity according to the display result, and determine a verification result according to the test change quantity and a standard change quantity; and the shooting module obtains the display result by shooting the display module. Through the application, the instrument verification efficiency can be effectively improved.

Description

Technical Field

[0001] This application relates to instrument calibration technology, and more particularly to an instrument calibration system, method, equipment and instrument. Background Technology

[0002] To ensure measurement accuracy and equipment performance, instruments need to be calibrated periodically. It is understood that instruments are divided into mechanical instruments and electronic instruments. Currently, to achieve compatibility between mechanical and electronic instruments, known calibration devices use video recording to calibrate the instruments. Specifically, the calibration device calculates the change in the instrument's cumulative reading by photographing the dial before and after calibration, then compares this change with the standard cumulative reading to obtain the instrument error, thus yielding the calibration result.

[0003] When calibrating the instrument using the above method, in order to obtain the cumulative change of the instrument, it is necessary to wait for a suitable time to photograph the cumulative value on the dial, which results in low calibration efficiency. Summary of the Invention

[0004] This application provides an instrument calibration system, method, equipment, and instrument to improve calibration efficiency.

[0005] In a first aspect, this application provides an instrument calibration system, the system comprising:

[0006] The control module is used to acquire the cumulative value of the instrument under test when a verification request is received.

[0007] The display module, connected to the control module, is used to acquire the cumulative amount and update the display result based on the current cumulative amount at preset intervals; the preset interval is less than the refresh cycle of the metering display module of the instrument under test.

[0008] The control module is also used to receive the display result through the imaging module, determine the test change amount based on the display result, and determine the verification result based on the test change amount and the standard change amount; the imaging module takes a picture of the display module to obtain the display result.

[0009] In another possible implementation, the control module is specifically used for:

[0010] Upon receiving the verification request, a communication connection is established with the instrument under test, and the pulse equivalent of the instrument under test is obtained;

[0011] The system sends a control command to the instrument under test and receives a pulse signal transmitted by the instrument under test in response to the control command; the instrument under test generates a pulse signal when the measured quantity reaches a pulse equivalent.

[0012] The cumulative quantity of the instrument under test is determined based on the number of pulse signals and the pulse equivalent.

[0013] In another possible implementation, the display module displays results in liters, and the number of decimal places in the display results is related to the pulse equivalent.

[0014] In another possible implementation, when the initial display result of the display module is zero, the control module is specifically used for:

[0015] After receiving the verification request for n preset durations, a collection command is sent to the imaging module, causing the imaging module to collect the display results of the display module; n is an integer greater than zero.

[0016] In another possible implementation, the control module is specifically used for;

[0017] The display result is received, and the cumulative amount corresponding to the display result is used as the test change amount; the cumulative amount corresponding to the display result is the cumulative amount within the n preset time periods;

[0018] The verification result is determined based on the test variation and the standard variation corresponding to the n preset durations; the standard variation is obtained by measuring the standard instrument, and the verification result is used to indicate the error of the instrument under test.

[0019] In another possible implementation, the control module is also used for:

[0020] Upon receiving a verification completion request, a completion command is sent to the instrument under test, causing the instrument under test to stop outputting the pulse signal.

[0021] Secondly, this application provides an instrument, the instrument comprising:

[0022] The instrument includes an instrument calibration system; the instrument calibration system includes a control module and a display module, wherein:

[0023] The control module is used to send a first switching command to the display screen of the instrument when a verification request is received, so that the display screen switches to the state of displaying the interface of the display module and obtains the cumulative amount of the instrument.

[0024] The display module, connected to the control module, is used to acquire the accumulated amount and update the display result based on the current accumulated amount at preset intervals; the preset interval is less than the refresh cycle of the display screen.

[0025] The control module is also used to receive the display result through the imaging module, determine the test change amount based on the display result, and determine the verification result based on the test change amount and the standard change amount; the imaging module takes a picture of the display module to obtain the display result.

[0026] In another possible implementation, the control module is also used for:

[0027] Upon receiving the verification result, a second switching command is sent to the display screen to switch the display screen from displaying the display module interface to displaying the measurement display module interface.

[0028] Thirdly, this application provides an instrument calibration method, the method comprising:

[0029] Upon receiving a verification request, the cumulative value of the instrument under test is obtained and sent to the display module, so that the display module updates the display result according to the cumulative value; the display module updates the display result once every preset time interval, the preset time interval being less than the refresh cycle of the display screen of the instrument under test;

[0030] The display result of the display module is obtained by the imaging module, the test change is determined based on the display result, and the verification result is determined based on the test change and the standard change; the imaging module takes a picture of the display module to obtain the display result.

[0031] Fourthly, this application provides an instrument calibration device, the device comprising:

[0032] The acquisition module is used to acquire the cumulative value of the instrument under test when a verification request is received, and send the cumulative value to the display module so that the display module updates the display result according to the cumulative value; the display module updates the display result once every preset time interval, the preset time interval being less than the refresh cycle of the display screen of the instrument under test;

[0033] The determining module is used to acquire the display result of the display module through the shooting module, determine the test change amount based on the display result, and determine the verification result based on the test change amount and the standard change amount; the shooting module takes a picture of the display module to obtain the display result.

[0034] Fifthly, this application provides an electronic device, comprising: at least one processor and a memory;

[0035] The memory stores computer-executed instructions;

[0036] The at least one processor executes the computer execution instructions stored in the memory, causing the at least one processor to perform the method described in the third aspect above.

[0037] In a sixth aspect, this application provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method described in the third aspect above.

[0038] In a seventh aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the method described in the third aspect.

[0039] This application provides an instrument calibration system, method, device, and instrument. The instrument calibration system includes a control module and a display module, and can be used to calibrate instruments under test using a camera method. Specifically, upon receiving a calibration request, the control module acquires the cumulative value of the instrument under test and sends it to the display module. The display module updates the display result based on the current cumulative value at intervals less than a preset time interval of the metering display module of the instrument under test. Further, the control module receives the display result from the display module through the camera module, determines the test change based on the display result, and finally determines the calibration result based on the test change and the standard change. When the instrument calibration system of this application is applied to the camera method calibration process, the control module can acquire the test change in a timely manner through the camera module, thereby effectively improving calibration efficiency. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0041] Figure 1 This is a schematic diagram illustrating an application scenario of an instrument calibration system provided in an embodiment of this application;

[0042] Figure 2 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 1 ;

[0043] Figure 3 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 2 ;

[0044] Figure 4 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 3 ;

[0045] Figure 5 This is a schematic diagram illustrating the use of an instrument calibration system provided in an embodiment of this application;

[0046] Figure 6 A schematic flowchart of an instrument calibration method provided in this application embodiment;

[0047] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 51. Instrument under test; 52. Support structure; 53. Control module; 54. Imaging module; 55. Display module; 56. Buttons; 57. Standard; 58. Control device.

[0050] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0052] Currently, to ensure measurement accuracy and equipment performance, instruments need to be calibrated regularly. It is understandable that instruments are divided into mechanical instruments and electronic instruments.

[0053] In modern instrument calibration, to achieve compatibility between mechanical and electronic instruments, the known technology employs a photographic calibration method. This method utilizes image processing technology to improve efficiency and accuracy, and is implemented through a capture module, a control module, and a standard instrument. The specific process is as follows:

[0054] The control module controls the imaging module to take pictures of the metering display module of the instrument under test before and after the verification. The imaging module sends the captured images to the control module, which processes the received images to obtain the cumulative readings of the instrument under test at these two time points. Further, based on the cumulative readings at these two time points, the control module calculates the change in the instrument's cumulative value, compares it with the standard cumulative value to obtain the instrument error, and thus obtains the verification result. The standard cumulative value is acquired by a standard instrument and transmitted to the control module.

[0055] Understandably, the timing before and after the start of the verification can be set by the user. In known technologies, to ensure verification efficiency, the verification cycle is generally set to the refresh cycle of the metering display module based on the refresh cycle of the metering display module of the instrument under test, so as to obtain two different display results, thereby enabling the control module to obtain the cumulative change.

[0056] In the above process, in order to obtain two different display results of the instrument under test, the imaging module needs to wait for a suitable time to take a picture of the accumulated amount on the dial, which results in low verification efficiency.

[0057] Therefore, this application provides an instrument calibration system, method, device, and instrument to improve the calibration efficiency when using photographic methods for instrument calibration. Specifically, the instrument calibration system of this application includes a display module and a control module, wherein the refresh cycle of the display module is shorter than the refresh cycle of the metering display module of the instrument under test. The control module acquires the display result displayed by the display module through the imaging module, thereby obtaining the test change of the instrument under test.

[0058] Compared with known technologies, the instrument calibration system of this application enables the imaging module to obtain updated display results more quickly, thereby allowing the control module to capture the test changes during the calibration process in a timely manner, thus effectively improving calibration efficiency.

[0059] It is understood that the method of this application can be used to verify any electronic instrument that can be verified by photographic method, such as electronic water meters, electronic pressure gauges, etc. Figure 1 This is a schematic diagram illustrating an application scenario of an instrument calibration system provided in an embodiment of this application, such as... Figure 1 As shown, the instrument calibration system of this application can be used to calibrate electronic water meters. Specifically, the control module is connected to the electronic water meter under test. Upon receiving a calibration request, it acquires the accumulated value of the electronic water meter under test and sends it to the display module. The display module receives the accumulated value and updates the display result based on the current accumulated value at preset time intervals. A camera module for acquiring the display results is connected to the control module, acquires the display results displayed by the display module, and transmits them to the control module. The control module determines the calibration result based on the acquired display results.

[0060] In the above process, the control module can capture the test change at preset intervals through the shooting module. The preset interval is less than the refresh cycle of the metering display module of the instrument under test. Therefore, the instrument verification system of this application can obtain the test change faster than known technologies, and thus obtain the verification results faster, thereby improving the verification efficiency.

[0061] It is understood that in the above scenario, the connections between the various parts can be made via wired or wireless means, and this embodiment does not limit this.

[0062] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Where the embodiments do not conflict, the following embodiments and features thereof can be combined with each other.

[0063] This application provides an instrument calibration system. Figure 2 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 1 See below for reference. Figure 2 The instrument calibration system of this embodiment will be described in detail.

[0064] Specifically, this embodiment uses an electronic water meter as the instrument to be measured. For example... Figure 2 As shown, the system provided in this embodiment includes a control module and a display module. It is understood that the control module and the display module can be independent modules or combined; this embodiment does not limit this.

[0065] In this embodiment, the control module is used to obtain the cumulative value of the instrument under test when a verification request is received.

[0066] It is understood that the verification request can be user-triggered. For example, the instrument verification system may also include a voice acquisition module connected to the controller. The user inputs verification commands through the voice acquisition module, which then sends the received commands to the control module, triggering the verification request. The voice acquisition module can also be a button or a text acquisition module, as long as it can interact with the user and allow the user to trigger the verification request; this embodiment does not impose any limitations on this.

[0067] It is understandable that the verification request can also be automatically triggered by the control module according to the configured verification rules. For example, if the control module is configured with a verification rule of "performing a verification once every week", then the control module will automatically trigger a verification request once every week.

[0068] In practical applications, verification requests can be based on both verification rules and user triggers. Specifically, the control module periodically sends confirmation information to the user based on the configured verification rules, allowing the user to confirm whether verification is required. If the user confirms that verification is required, the verification request is triggered through at least one of the following methods: voice acquisition module, button press, text acquisition module, etc.

[0069] It is understood that this embodiment does not limit the way the verification request is triggered, as long as it can be determined that the control module can receive the verification request when verification is required.

[0070] In this embodiment, when the control module receives a verification request, it establishes a connection with the instrument under test (DUT). Specifically, it establishes a connection with the control module of the DUT to obtain the accumulated value of the DUT. The connection between the control module and the control module of the DUT can be a wireless connection such as infrared, or a wired connection; this embodiment does not limit this type of connection.

[0071] It is understood that the control module can also be part of the water meter under test, directly connected to the metering unit of the water meter under test to obtain the cumulative amount of the instrument under test. In this embodiment, the relationship between the water meter under test and the instrument calibration system is not limited.

[0072] like Figure 2 As shown, the display module is connected to the control module to acquire the cumulative value and updates the display result based on the current cumulative value at preset time intervals. The preset time interval is less than the refresh cycle of the metering display module of the instrument under test.

[0073] Correspondingly, the control module is also used to receive the display results through the imaging module, determine the test change based on the display results, and determine the verification result based on the test change and the standard change. It is understood that the imaging module can be a standalone module or integrated into the control module; this embodiment does not limit this.

[0074] In this embodiment, the instrument calibration system includes a display module that is distinct from the metering display module of the instrument under test. The refresh cycle of this display module is shorter than that of the metering display module. For example, if the refresh cycle of the metering display module of the water meter under test is 1 second, then the refresh cycle of the display module can be 0.25 seconds.

[0075] Based on this setup, the imaging module can capture two different display results at intervals as short as 0.25 seconds. Correspondingly, the control module can also acquire two different display results at intervals as short as 0.25 seconds, thus obtaining the test change. Furthermore, the control module compares the test change with the standard change to obtain a verification result used to indicate the error.

[0076] It is understandable that an instrument calibration system may or may not include a camera module. When the instrument calibration system does not include a camera module, calibration is performed using calibration devices based on known technologies. In this case, it is necessary to establish a connection between the camera module and the control module.

[0077] It is understood that the verification device in the known technology also includes a standard, which is used to obtain the standard change corresponding to the two display results. This is a known technology and will not be described in detail in this embodiment.

[0078] In the instrument calibration system provided in this embodiment, the display module updates the display result every preset time interval, which is less than the refresh cycle of the metering display module of the instrument under test. Correspondingly, the imaging module can capture two display results at the fastest interval of one preset time interval, enabling the control module to obtain the test change in a timely manner, thereby effectively improving the calibration efficiency.

[0079] For example, when the instrument under test is an electronic water meter, its normal display refresh cycle is 1 second. If the accuracy of the electronic water meter is level 2 and the required uncertainty is 0.5%, then the verification time is at least 1 / 0.5% = 200 seconds. With the instrument verification system of this embodiment, if the preset time is 0.25 seconds, then under the same conditions as the aforementioned electronic water meter, the verification time only needs 50 seconds, which is 75% faster than known technologies.

[0080] Based on the foregoing embodiments, as a design, this application provides another embodiment of an instrument calibration system. Figure 3 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 2 The following is combined with Figure 3 The system of this embodiment will be described in detail.

[0081] like Figure 3 As shown, the system provided in this embodiment includes a display module, a control module, buttons, and a power module.

[0082] In this embodiment, the control module can specifically be a microcontroller. Buttons are connected to the control module for user interaction. The power module, in addition to connecting to the control module, is also connected to other components to supply power to the entire instrument calibration system. In this embodiment, the power module provides 3V power to the instrument calibration system.

[0083] Specifically, the control module monitors the button status and determines whether a verification request has been received based on the button status. It is understood that the button can be a lock button or a momentary button press; this embodiment does not limit this.

[0084] For example, when the button is a locked button, the control module determines that a verification request has been received when the button status indicates that the locked button has changed from the released state to the pressed state; determines that no verification request has been received when the button status indicates that the locked button is in the released state; and determines that a verification end request has been received when the button status indicates that the button has changed from the pressed state to the released state.

[0085] By setting up buttons, users can simply press a button to activate the instrument calibration system when they need calibration. The operation process is simple, which also helps to ensure calibration efficiency.

[0086] likeFigure 4 As shown, in this embodiment, the instrument calibration system further includes a pulse acquisition module and a communication module. Based on this, in this embodiment, the control module is specifically used to: establish a communication connection with the instrument under test when a calibration request is received, and obtain the pulse equivalent of the instrument under test; send a control command to the instrument under test, and receive the pulse signal transmitted by the instrument under test in response to the control command; generate a pulse signal when the measured quantity reaches a pulse equivalent; and determine the cumulative quantity of the instrument under test based on the number of pulse signals and the pulse equivalent.

[0087] Specifically, both the pulse acquisition module and the communication module are connected to the control module and the instrument under test (DUT) via wired or wireless means. When the control module receives a verification request via a button, it establishes a communication connection with the DUT through the communication module, acquires the pulse equivalent of the DUT, and sends a control command to the DUT to start outputting pulse signals. Simultaneously, it controls the pulse acquisition module to acquire and receive the pulse signals output by the DUT, and records the number of pulse signals.

[0088] More specifically, in this embodiment, the communication module uses near-infrared communication and is connected to the serial port of the control module to enable communication between the control module and the instrument under test (DUT). The pulse acquisition module uses infrared pulse acquisition. Accordingly, the DUT is equipped with an infrared signal transmitter, which is connected to the metering module of the DUT. For each pulse signal fluctuation of the metering module, the infrared signal transmitter emits an infrared pulse signal. The pulse acquisition module receives the infrared pulse signal emitted by the DUT's infrared signal transmitter and converts it into an electrical signal, which is then transmitted to the control module.

[0089] It is understood that infrared signals are a universal communication method that can be received and processed by many different types of devices. Therefore, in this embodiment, the communication module adopts near-infrared communication, making the instrument calibration system of this embodiment applicable to different types of metering instruments, such as mechanical water meters, ultrasonic water meters, etc.

[0090] Furthermore, in practical applications, metering instruments from different manufacturers may use different communication protocols, leading to compatibility issues. In this embodiment, by using infrared signals as a standardized output method, these protocol differences can be bypassed, making the instrument calibration system of this embodiment more versatile.

[0091] Furthermore, the control module calculates the cumulative quantity of the instrument under test (DUT) based on the number of received pulse signals and the obtained pulse equivalent of the DUT. Specifically, the control module obtains the cumulative quantity by multiplying the number of pulse signals by the pulse equivalent of the DUT. It should be understood that the pulse equivalent is specifically determined by the properties of the DUT.

[0092] Based on this, in this embodiment, the control module is also used to: send an end command to the instrument under test when a verification end request is received, so that the instrument under test stops outputting pulse signals.

[0093] Specifically, the control module sends a termination command to the instrument under test (DUT) via the communication module, causing the DUT to stop outputting pulse signals. It can be understood that the control module can simultaneously send a termination command to the pulse acquisition module, causing the pulse acquisition module to stop receiving pulse signals from the DUT, thus saving energy for both the pulse acquisition module and the DUT.

[0094] In a preferred embodiment, when the instrument under test is an electronic water meter, the display module displays results in liters, and the number of decimal places in the display results is related to the pulse equivalent.

[0095] Understandably, in known technologies, the metering display module of electronic water meters uses cubic meters as the unit of measurement, typically displayed to four decimal places, meaning a resolution of 0.1 liters. Based on this, if the electronic water meter has an accuracy level of 2 and a required verification uncertainty of 0.5%, then the minimum quantity for verification is 0.1 / 0.5% = 20 liters. Taking a DN40 electronic water meter as an example, if its maximum flow rate under normal operating conditions is 25 m³ / h and its range ratio is R250, then its minimum flow rate is 0.1 m³ / h. In this case, the verification time for 20 liters of water usage would be 12 minutes.

[0096] In this embodiment, the display result of the display module is set to liters. If the display module can display to four decimal places, the corresponding resolution is 0.001 liters. When the actual resolution is consistent with the pulse equivalent of the electronic water meter, and the pulse equivalent is 0.01 liters, under the same conditions, only 2 liters of water consumption are needed for verification, and the verification time is 1.2 minutes, which is only one-tenth of the original verification time.

[0097] Therefore, by adopting the above settings, on the one hand, the verification efficiency can be effectively improved, and on the other hand, the amount of measurement required for verification can be effectively reduced, thereby effectively reducing resource waste.

[0098] In a preferred embodiment, the initial display result of the display module is zero. Specifically, the control module may send a display command to the display module upon receiving a verification request, thereby initializing the display result of the display module to zero. Alternatively, the display module may automatically initialize to zero upon power-on; this embodiment does not limit this approach.

[0099] Based on this, the control module is specifically used to: after receiving n preset time intervals of the verification request, send a collection command to the shooting module, so that the shooting module can collect the display results of the display module; n is an integer greater than zero.

[0100] To make the verification process more efficient, n can be set to 1. When the control module receives the verification request, it initializes the initial display result of the display module to zero. At the same time, after a preset interval, that is, when the display module completes the update of the display result based on the cumulative amount, it sends a collection command to the imaging module, so that the imaging module can collect the display result of the display module and obtain the current display result.

[0101] Furthermore, the control module is specifically used to: receive the display result and use the cumulative amount corresponding to the display result as the test change amount; the cumulative amount corresponding to the display result is the cumulative amount within n preset time periods; and determine the verification result based on the test change amount and the standard change amount corresponding to the n preset time periods.

[0102] The standard variation is obtained by measuring the standard instrument, and the calibration result is used to indicate the error of the instrument under test.

[0103] It is understandable that since the control module initializes the initial display result of the display module to zero when it receives the verification request, the control module controls the imaging module to take a picture of the display module once. The cumulative amount corresponding to the display result obtained in this picture can be used as the test change amount, which is used to compare with the standard change amount to obtain the verification result.

[0104] The above process eliminates the need for the control module to take pictures of the display module before the verification begins, and also eliminates the need to perform subtraction operations on the two display results. This not only further improves verification efficiency, but also reduces wear and tear on the imaging module and effectively protects its lifespan.

[0105] It is understandable that in practical applications, n can be 2 or any other integer, and this implementation does not impose any restrictions on this.

[0106] Furthermore, in practical applications, when the control module obtains the test change based on the cumulative amount over n preset time periods, it can also determine the average cumulative amount over a preset time period based on the cumulative amount over n preset time periods, and use this average cumulative amount as the test change amount over the preset time period. Correspondingly, the control module calculates the average standard change amount corresponding to a preset time period based on the standard change amounts corresponding to the n preset time periods, and then obtains the verification result by comparing the test change amount over the preset time period with the average standard change amount, thereby ensuring the accuracy and fairness of the assessment result. This embodiment does not impose any limitations on this aspect.

[0107] As a design, this application provides yet another embodiment of an instrument calibration system. Specifically, Figure 3 A schematic diagram of the structure of an instrument calibration system provided in this application embodiment. Figure 4 The following is combined with Figure 4The system of this embodiment will be described in detail. For example... Figure 4 As shown, the system provided in this embodiment, in addition to the aforementioned components, also includes a shooting module and a standard.

[0108] Specifically, both the imaging module and the standard are connected to the control module. The imaging module receives acquisition commands from the control module and, in response, captures images of the display module to obtain the display results. It can be understood that the display results are in the form of images. The imaging module sends these images to the control module, which then processes the images to obtain the cumulative amount corresponding to the display results.

[0109] The standard instrument is specifically an electronic capacity scale, which is used to receive weighing commands from the control module and respond to weighing commands. During the weighing verification process, the measurement quantity of the instrument under test is used to obtain the standard change quantity.

[0110] like Figure 5 As shown, the system provided in this embodiment also includes a control device, which is also connected to the control module. The control device is used to receive control commands from the control module and respond to the control commands to control the measurement quantity of the instrument under test to be at a stable calibration measurement point.

[0111] As an example, Figure 5 This is a schematic diagram illustrating the use of an instrument calibration system provided in an embodiment of this application. Figure 5 As shown, when performing calibration using the instrument calibration system of this application, the instrument under test 51 is positioned on the support structure 52 included in the instrument calibration system, and the control module 53 is connected to the instrument under test 51. Furthermore, the imaging module 54 must be positioned directly opposite the display module 55, as shown. Figure 5 As shown, the display module 55 can be placed above the instrument under test 51, and the imaging module 54 is located above the display module 55 and directly facing the display module 55.

[0112] Based on this, when the user presses button 56, the control module 53 acquires the cumulative value of the instrument under test 51 and displays it on the display module 55. Simultaneously, the control imaging module 54 takes a picture of the display module 55 at preset intervals to obtain the cumulative value of the displayed result, and obtains the test change value based on this cumulative value. Furthermore, when the user presses button 56, the control module 53 also sends control commands to the standard instrument 57 and the control device 58 respectively, enabling them to acquire the standard change value and the stable measurement value, respectively.

[0113] When the control module 53 obtains the test change and the standard change, it performs a subtraction operation between the two to obtain the verification result.

[0114] It is understandable that, such as Figure 6As shown in this application, the support structure 52 can be used to place multiple instruments under test 51. Correspondingly, multiple display modules 55 and imaging modules 54 can be provided for calibrating multiple instruments under test 51. In addition, the display module 55 can also be placed at any position other than above the instruments under test 51, and this embodiment does not limit this.

[0115] This application embodiment also provides an instrument, which includes an instrument calibration system. The instrument calibration system includes a control module and a display module, wherein: the control module is used to send a first switching command to the instrument's display screen when a calibration request is received, causing the display screen to switch to displaying the display module interface and to acquire the instrument's cumulative value; the display module is connected to the control module and is used to acquire the cumulative value and update the display result based on the current cumulative value at preset time intervals; the preset time interval is less than the display screen's refresh cycle; the control module is also used to receive the display result through an imaging module, determine the test change based on the display result, and determine the calibration result based on the test change and the standard change; the imaging module takes a picture of the display module to obtain the display result.

[0116] Understandably, in order for the instrument to meet national standards, when the instrument has only one display screen, the control module needs to switch the display screen from displaying the metering display module interface to displaying the display module interface when it receives a verification request, so as to display the cumulative quantity during the verification process.

[0117] Correspondingly, the control module is also used to: switch the display screen from displaying the state of the display module interface to displaying the state of the measurement display module interface when the verification result is obtained.

[0118] Understandably, the metering display module is used to display the metered quantities of the instrument. When the instrument switches the display screen to the display module interface, the metering display module continuously receives the accumulated quantities transmitted by the control module to ensure the accuracy of the instrument.

[0119] In practical applications, when the instrument has only one display screen, the control module can switch the display screen to simultaneously show both the metering display module interface and the display module interface upon receiving a verification request. Conversely, upon receiving a verification request, the control module can restore the display screen to show only the metering display module interface.

[0120] It is understood that the instrument, including the instrument calibration system, is any of the instrument calibration systems protected in the foregoing embodiments, and will not be described again here.

[0121] This application also provides an instrument calibration method. Figure 6 This is a flowchart illustrating an instrument calibration method provided in an embodiment of this application. Figure 7 As shown, the method in this embodiment includes:

[0122] S601, upon receiving a verification request, acquires the cumulative value of the instrument under test and sends the cumulative value to the display module, so that the display module updates the display result based on the cumulative value.

[0123] The display module updates the display result once every preset time interval, which is less than the refresh cycle of the instrument under test display screen.

[0124] S602 acquires the display results from the display module through the imaging module, determines the test change based on the display results, and determines the verification result based on the test change and the standard change.

[0125] The camera module takes a picture of the display module to obtain the display result.

[0126] It is understood that, in this embodiment of the application, the instrument calibration method can be executed by the control module in the foregoing embodiment or by any electronic device, and this embodiment does not limit it.

[0127] Furthermore, for details on how to determine receipt of a verification request, how to obtain the cumulative quantity of the instrument under test, how to obtain the display result of the display module, and how to determine the verification result, please refer to the aforementioned embodiments, which will not be repeated here.

[0128] In the instrument verification method provided in this embodiment, since the display result of the display module is obtained by the imaging module, and then the test change and verification result are obtained in sequence, and the preset time for the display module to update the display result is less than the refresh cycle of the metering display module of the instrument under test, the instrument verification method of this application can obtain the verification result more efficiently than the imaging verification method in the known technology.

[0129] The above embodiments describe an instrument calibration method from the perspective of process flow. The following embodiments describe an instrument calibration device from the perspective of virtual module or virtual unit. For details, please refer to the following embodiments.

[0130] This application provides an instrument calibration device, specifically, the device includes:

[0131] The acquisition module is used to acquire the cumulative value of the instrument under test when a verification request is received, and send the cumulative value to the display module so that the display module updates the display result according to the cumulative value; the display module updates the display result once every preset time interval, which is less than the refresh cycle of the display screen of the instrument under test;

[0132] The determination module is used to obtain the display results of the display module through the imaging module, determine the test change based on the display results, and determine the verification result based on the test change and the standard change; the imaging module takes pictures of the display module to obtain the display results.

[0133] The instrument calibration device provided in this application is applicable to the above-described method embodiments, and will not be described again here.

[0134] This application provides an electronic device. Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 7 As shown, Figure 7 The illustrated electronic device includes a processor 71 and a memory 72. The processor 71 and the memory 72 are connected, for example, via a bus 73. Optionally, the electronic device may also include a transceiver 74. It should be noted that in practical applications, the transceiver 74 is not limited to one type, and the structure of this electronic device does not constitute a limitation on the embodiments of this application.

[0135] Processor 71 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 71 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0136] Bus 73 may include a pathway for transmitting information between the aforementioned components. Bus 73 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Bus 73 may be divided into address bus, data bus, control bus, etc. For ease of representation, ​ The symbol is represented by a single thick line, but this does not mean that there is only one bus 73 or one type of bus 73.

[0137] The memory 72 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0138] The memory 72 is used to store application code that executes the solution of this application, and its execution is controlled by the processor 71. The processor 71 is used to execute the application code stored in the memory 72 to implement the content shown in the foregoing method embodiments.

[0139] This application also provides a computer-readable storage medium, which may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. Specifically, the computer-readable storage medium stores program instructions, which are used to implement the methods in the above embodiments.

[0140] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the technical solution of the above method embodiments. Its implementation principle and technical effects are similar, and will not be repeated here.

[0141] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0142] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An instrument calibration system, characterized in that, The system includes: The control module is used to acquire the cumulative value of the instrument under test when a verification request is received. The display module, connected to the control module, is used to acquire the cumulative amount and update the display result based on the current cumulative amount at preset intervals; the preset interval is less than the refresh cycle of the metering display module of the instrument under test. The control module is also used to receive the display result through the imaging module, determine the test change amount based on the display result, and determine the verification result based on the test change amount and the standard change amount; the imaging module takes a picture of the display module to obtain the display result.

2. The system according to claim 1, characterized in that, The control module is specifically used for: Upon receiving the verification request, a communication connection is established with the instrument under test, and the pulse equivalent of the instrument under test is obtained; Send a control command to the instrument under test and receive the pulse signal transmitted by the instrument under test in response to the control command; The instrument under test generates a pulse signal when the measured quantity reaches a pulse equivalent. The cumulative quantity of the instrument under test is determined based on the number of pulse signals and the pulse equivalent.

3. The system according to claim 2, characterized in that, The display module displays results in liters, and the number of decimal places in the display results is related to the pulse equivalent.

4. The system according to claim 2 or 3, characterized in that, When the initial display result of the display module is zero, the control module is specifically used for: After receiving the verification request for n preset durations, a collection command is sent to the imaging module, causing the imaging module to collect the display results of the display module; n is an integer greater than zero.

5. The system according to claim 4, characterized in that, The control module is specifically used for; The display result is received, and the cumulative amount corresponding to the display result is used as the test change amount; the cumulative amount corresponding to the display result is the cumulative amount within the n preset time periods; The verification result is determined based on the test change and the standard change corresponding to the n preset durations; the standard change is obtained by measuring the standard instrument, and the verification result is used to indicate the error of the instrument under test.

6. The system according to claim 2 or 3, characterized in that, The control module is also used for: Upon receiving a verification completion request, a completion command is sent to the instrument under test, causing the instrument under test to stop outputting the pulse signal.

7. An instrument, characterized in that, The instrument includes an instrument calibration system; the instrument calibration system includes a control module and a display module, wherein: The control module is used to send a first switching command to the display screen of the instrument when a verification request is received, so that the display screen switches to the state of displaying the interface of the display module and obtains the cumulative amount of the instrument. The display module, connected to the control module, is used to acquire the accumulated amount and update the display result based on the current accumulated amount at preset intervals; the preset interval is less than the refresh cycle of the display screen. The control module is also used to receive the display result through the imaging module, determine the test change amount based on the display result, and determine the verification result based on the test change amount and the standard change amount; the imaging module takes a picture of the display module to obtain the display result.

8. The instrument according to claim 7, characterized in that, The control module is also used for: Upon receiving the verification result, a second switching command is sent to the display screen to switch the display screen from displaying the display module interface to displaying the measurement display module interface.

9. A method for calibrating an instrument, characterized in that, The method includes: Upon receiving a verification request, the cumulative value of the instrument under test is obtained and sent to the display module, so that the display module updates the display result according to the cumulative value; the display module updates the display result once every preset time interval, the preset time interval being less than the refresh cycle of the display screen of the instrument under test; The display result of the display module is obtained by the imaging module, the test change is determined based on the display result, and the verification result is determined based on the test change and the standard change; the imaging module takes a picture of the display module to obtain the display result.

10. An electronic device, characterized in that, include: At least one processor and memory; The memory stores computer-executed instructions; The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the method as described in claim 9.

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