Table setting test method and device for speedometer of vehicle and electronic equipment

Abstract

The invention discloses a meter matching test method and device for a speedometer of a vehicle and electronic equipment. The method comprises the steps that in response to the situation that a vehicle is located in a detection area, identification information of the vehicle is recognized; in response to the identified identification information of the vehicle, the vehicle is controlled to run towards a speed test device, and the speed test device is deployed in the detection area; in response to a test position in the vehicle driving-in speed test device, controlling an optical signal detection device to detect a meter setting test signal of the vehicle, the meter setting test signal being triggered when a display vehicle speed of a speedometer of the vehicle is greater than or equal to a speed threshold; and responding to the optical signal detection equipment to detect the meter checking test signal, and carrying out meter checking test on the speed meter of the vehicle. According to the invention, the technical problem of low meter setting efficiency of the vehicle speed meter is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a method, device, and electronic device for calibrating a speedometer of a vehicle. Background Art

[0002] Currently, in the vehicle manufacturing and maintenance industries, ensuring the accuracy and reliability of a vehicle's speedometer is a basic and important requirement. The accuracy of a vehicle's speedometer is not only related to the driver's correct judgment of the vehicle's driving state but also directly affects driving safety. Therefore, before the vehicle leaves the factory or during regular maintenance, the speedometer must be calibrated to ensure that the displayed vehicle speed matches the actual vehicle speed.

[0003] Traditional speedometer calibration methods usually rely on manual assistance for speedometer calibration. However, manual judgment may have subjective errors in operation, affecting the accuracy of calibration, and manual operation increases the time consumption of the detection process and reduces the overall test efficiency.

[0004] In view of the above technical problem of low calibration efficiency of the vehicle's speedometer, no effective solution has been proposed yet. Summary of the Invention

[0005] Embodiments of the present invention provide a method, device, and electronic device for calibrating a speedometer of a vehicle to at least solve the technical problem of low calibration efficiency of the vehicle's speedometer.

[0006] According to one aspect of the embodiments of the present invention, a method for calibrating a speedometer of a vehicle is provided. The method may include: in response to the vehicle being in a detection area, identifying the identification information of the vehicle; in response to identifying the identification information of the vehicle, controlling the vehicle to drive towards a speed test device, where the speed test device is deployed in the detection area; in response to the vehicle driving into a test position in the speed test device, controlling an optical signal detection device to detect a calibration test signal of the vehicle, where the calibration test signal is triggered when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to a speed threshold; and in response to the optical signal detection device detecting the calibration test signal, performing a calibration test on the vehicle's speedometer.

[0007] Optionally, in response to the vehicle driving into a test position in the speed test device, controlling the optical signal detection device to detect a calibration test signal of the vehicle includes: in response to the vehicle driving into a test position in the speed test device, adjusting the initial detection position of the optical signal detection device; in response to the adjusted initial detection position being a preset detection position, starting the optical signal detection device; and controlling the started optical signal detection device to detect the calibration test signal of the vehicle.

[0008] Optionally, the calibration test signal is triggered by the driver of the vehicle toggling the high and low beam alternating control.

[0009] Optionally, in response to the optical signal detection device detecting the meter alignment test signal, a meter alignment test is performed on the speedometer of the vehicle, including: in response to the optical signal detection device detecting the meter alignment test signal, triggering a data acquisition instruction; in response to the data acquisition instruction, controlling the speed test device to collect the actual vehicle speed; and based on the actual vehicle speed and the displayed vehicle speed of the speedometer, performing a meter alignment test on the speedometer of the vehicle.

[0010] Optionally, based on the actual vehicle speed and the displayed vehicle speed of the speedometer, performing a meter alignment test on the speedometer of the vehicle includes: determining the speed difference between the actual vehicle speed and the displayed vehicle speed; and based on the speed difference and the speed difference threshold, performing a meter alignment test on the speedometer of the vehicle to obtain the test result of the speedometer of the vehicle, where the test result is used to at least indicate that the display result of the speedometer of the vehicle is accurate, or there is an error in the display result of the speedometer of the vehicle.

[0011] Optionally, based on the speed difference and the speed difference threshold, determining the test result of the speedometer of the vehicle includes: in response to the speed difference being within the speed difference threshold range, determining that the test result of the speedometer of the vehicle is that the display result of the speedometer of the vehicle is accurate; and in response to the speed difference being outside the speed difference threshold range, determining that the test result of the speedometer of the vehicle is that there is an error in the display result of the speedometer of the vehicle.

[0012] Optionally, in the case where there is an error in the display result of the speedometer of the vehicle, the method further includes: calibrating the speedometer of the vehicle based on the speed difference.

[0013] According to another aspect of the embodiments of the present invention, there is also provided a meter alignment test device for a speedometer of a vehicle. The device may include: an identification unit for identifying the identification information of the vehicle in response to the vehicle being in the detection area; a first control unit for controlling the vehicle to travel towards the speed test device in response to identifying the identification information of the vehicle, where the speed test device is deployed in the detection area; a second control unit for controlling the optical signal detection device to detect the meter alignment test signal of the vehicle in response to the vehicle driving into the test position in the speed test device, where the meter alignment test signal is triggered when the displayed vehicle speed of the speedometer of the vehicle is greater than or equal to the speed threshold; and a test unit for performing a meter alignment test on the speedometer of the vehicle in response to the optical signal detection device receiving the meter alignment test signal.

[0014] According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including: a memory storing an executable program; and a processor for running the program, where when the program runs, it executes the methods in the various embodiments of the present invention.

[0015] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which includes a stored executable program. When the executable program runs, it controls the device where the computer-readable storage medium is located to execute the methods in various embodiments of the present invention.

[0016] According to another aspect of the embodiments of the present invention, there is also provided a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0017] According to another aspect of the embodiments of the present invention, there is also provided a computer program product, including a non-volatile computer-readable storage medium, which stores a computer program that implements the methods in various embodiments of the present invention when executed by a processor.

[0018] According to another aspect of the embodiments of the present invention, there is also provided a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0019] In the embodiments of the present invention, in response to the vehicle being in the detection area, the identification information of the vehicle is identified; in response to the identification of the vehicle's identification information, the vehicle is controlled to drive towards the speed test device, where the speed test device is deployed in the detection area; in response to the vehicle driving into the test position in the speed test device, the optical signal detection device is controlled to detect the alignment test signal of the vehicle, where the alignment test signal is triggered when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to the speed threshold; in response to the optical signal detection device detecting the alignment test signal, the alignment test of the vehicle's speedometer is performed. That is to say, in the embodiments of the present invention, by automatically controlling the vehicle to drive towards the speed test device and using the optical signal detection device to automatically detect the alignment test signal, the delay and low efficiency caused by manual operation in the traditional method are eliminated. The automated process enables the vehicle to quickly and continuously complete the alignment test after entering the detection area, significantly improving the alignment detection efficiency of the speedometer, and thus solving the technical problem of low alignment efficiency of the vehicle's speedometer. Description of the Drawings

[0020] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a flowchart of a method for aligning and testing a speedometer of a vehicle according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of an alignment measurement device according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the alignment measurement device in the open state according to an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the alignment measurement device in the working state according to an embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of an alignment test device for the speedometer of a vehicle according to an embodiment of the present invention. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, functional component or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, functional components or devices.

[0028] According to an embodiment of the present invention, an embodiment of a method for aligning and testing the speedometer of a vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0029] Figure 1 It is a flowchart of a method for aligning and testing the speedometer of a vehicle according to an embodiment of the present invention. As Figure 1 shown, the method may include the following steps:

[0030] Step S101, in response to the vehicle being in the detection area, identify the identification information of the vehicle.

[0031] In the technical solution provided in step S101 of the present invention above, the identification information is used to uniquely identify a vehicle. Among them, the identification information can be a two-dimensional code, a bar code, a Radio Frequency Identification (RFID) tag, a license plate number, etc., and no specific limitation is made here.

[0032] In this embodiment, in order to ensure that the calibrated data and results can be correctly associated with a specific vehicle, facilitating data management and traceability, before performing the meter test on the vehicle, the identification information of the vehicle can be identified first.

[0033] For example, a bar code or a two-dimensional code tag containing unique identification information can be pasted on the vehicle. When the vehicle enters the detection area, the information on these tags is automatically read by a scanning device installed at the entrance of the detection area to identify the identity of the vehicle.

[0034] Optionally, the vehicle can also be equipped with an RFID tag, and the identification information of the vehicle is stored in the tag. An RFID reader is set at the entrance of the detection area. When the vehicle passes by, the reader captures the signal emitted by the RFID tag to identify the vehicle. This is only an exemplary example here, and the specific manner of identifying the identification information of the vehicle is not limited.

[0035] Step S102, in response to identifying the identification information of the vehicle, control the vehicle to drive towards the speed test device.

[0036] In the technical solution provided in step S102 of the present invention above, the speed test device can be called a speed bench. Among them, the speed test device includes speed test rollers. When the vehicle is stationary on the speed test device, the tires of the vehicle can be in contact with the rollers, and the rollers are driven by a motor to rotate the tires of the vehicle, thereby simulating the driving state of the vehicle on the road.

[0037] In this embodiment, after identifying the identification information of the vehicle, the vehicle can be controlled to drive towards the speed test device to enter the next test of the speed test device.

[0038] For example, after identifying the identification information of the vehicle, an Automated Guided Vehicle (AGV) can be used to control the driving path of the vehicle and correctly guide the vehicle to the test position of the speed test device.

[0039] Optionally, after identifying the identification information of the vehicle, a driving instruction can be sent to the vehicle so that the vehicle drives to the test position of the speed test device according to the driving instruction.

[0040] Step S103: In response to the vehicle driving into the test position in the speed test device, control the optical signal detection device to detect the alignment test signal of the vehicle.

[0041] In the technical solution provided in step S103 of the present invention above, the alignment test signal is triggered when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to the speed threshold, and this alignment test signal can be the high and low beam alternating signal triggered by the driver of the vehicle toggling the high and low beam alternating control.

[0042] In this embodiment, after the vehicle enters the test position in the speed test device, the optical signal detection device (such as, a light sensor) enters the detection state and continuously detects whether the vehicle emits an alignment test signal.

[0043] Optionally, since the error of the vehicle's speedometer may vary with different vehicle speeds. At relatively low vehicle speeds, due to the physical effects of vehicle starting and accelerating, the indication of the speedometer may not be very stable; while at relatively high vehicle speeds, the rotation of the tires, the stability of the vehicle, and the accuracy of the detection device may all affect the test results. Based on this, by setting the speed threshold, the vehicle speed during the alignment test of the vehicle is in a stable state, which can not only ensure the relatively stable driving state of the vehicle but also effectively test the accuracy of the speedometer within the common speed range. Among them, the speed threshold can be 40 kilometers per hour (km / h), which is only an exemplary example here and does not limit the speed threshold.

[0044] Optionally, during the acceleration process of the vehicle in the speed test device, if the driver observes that the displayed vehicle speed on the vehicle's speedometer reaches the speed threshold, in this case, it means that the current vehicle speed has met the requirements for the alignment test. To transmit this signal outward, the driver of the vehicle can emit an alignment test signal by toggling the high and low beam alternating control of the vehicle to indicate that the vehicle has reached the predetermined calibration speed. After the vehicle emits the alignment test signal, the optical signal detection device in the detection state can promptly respond to this alignment test signal and trigger the alignment test of the speedometer.

[0045] Step S104: In response to the optical signal detection device detecting the alignment test signal, perform an alignment test on the vehicle's speedometer.

[0046] In the technical solution provided in step S104 of the present invention above, when the optical signal detection device detects the alignment test signal emitted by the vehicle, the alignment test signal can be fed back to the control system or the industrial control computer of the speed test device.

[0047] Optionally, after receiving the alignment test signal fed back by the optical signal detection device, the control system of the speed test device or the industrial control computer will immediately start the speedometer calibration program. This program detects the accuracy of the speedometer by comparing the actual driving speed of the vehicle (measured by the speed test device) with the displayed speed of the speedometer.

[0048] Optionally, after the alignment test program is started, the speed test device will start to accurately measure the actual driving speed of the vehicle on the rollers of the speed test device. At the same time, the displayed vehicle speed of the vehicle speedometer will also be recorded. Then, based on the difference between the two, it is determined whether the display of the vehicle's speedometer is accurate.

[0049] Optionally, the purpose of performing an alignment test on the vehicle's speedometer is to verify whether the display of the speedometer meets industry standards and regulatory requirements under a preset speed threshold, that is, to verify whether the error between the displayed vehicle speed V1 and the actual speed V2 of the vehicle satisfies the condition of 0 ≤ V1 - V2 ≤ (V2 / 10) + 4.

[0050] Optionally, by calculating the speed difference between the displayed vehicle speed of the speedometer and the actual speed of the vehicle, that is, the speed error. If the speed error is within the allowable range, it indicates that the speedometer display is accurate; if the speed error exceeds this range, it indicates that there is an error in the speedometer display and further calibration or repair is required. In addition, the control system can also automatically analyze the reasons for the existence of the speed error, for example, whether it is caused by inaccurate tire size, internal failure of the speedometer or other factors.

[0051] Optionally, after the alignment test is completed, the test results (including actual speed, indicated speed, error value, etc.) will be recorded and automatically stored in the database for subsequent quality control and maintenance records. In addition, the test results will also be fed back to the driving object or other operators so that the operating object can understand the calibration status of the vehicle's speedometer.

[0052] Optionally, once the alignment test is completed, the control system will send an instruction to the optical signal detection device to return it to the initial state, and at the same time notify the driving object that the alignment test is over and it can safely drive away from the speed test device.

[0053] In this step, by using the alignment test signal recognized by the optical signal detection device as the trigger mechanism for the alignment test, it can ensure that the calibration test starts when the vehicle truly reaches the preset speed, thereby improving the accuracy and efficiency of the test.

[0054] In the above steps S101 to S104 of the present invention, by automatically controlling the vehicle to drive towards the speed test device and using the optical signal detection device to automatically detect the alignment test signal, the delays and inefficiencies caused by manual operations in the traditional method are eliminated. The automated process enables the vehicle to quickly and continuously complete the alignment test after entering the detection area, significantly improving the alignment detection efficiency of the speedometer, and thus solving the technical problem of low alignment efficiency of the vehicle's speedometer.

[0055] The above method of this embodiment will be further introduced below.

[0056] As an alternative embodiment, in step S103, in response to the vehicle driving into the test position in the speed test device, controlling the optical signal detection device to detect the alignment test signal of the vehicle includes: in response to the vehicle driving into the test position in the speed test device, adjusting the initial detection position of the optical signal detection device; in response to the adjusted initial detection position being the preset detection position, starting the optical signal detection device; controlling the started optical signal detection device to detect the alignment test signal of the vehicle.

[0057] In this embodiment, when the vehicle drives into the test position of the speed test device (such as a speed bench), the optical signal detection device (such as a light sensor) needs to be adjusted from its initial detection position to a preset detection position that can most effectively detect the vehicle signal. For example, the position of the optical signal detection device is adjusted to the direct facing direction of the vehicle's headlight to ensure that when the vehicle emits an optical signal, it can be accurately captured by the optical signal detection device.

[0058] Optionally, once the optical signal detection device is adjusted to the preset detection position, the control system will start the optical signal detection device to make it enter the working state. That is, the signal receiving and processing functions of the optical signal detection device are turned on to prepare to capture the alignment test signal emitted by the vehicle in real time.

[0059] Optionally, after the optical signal detection device is started and in the preset detection position, the optical signal detection device can be controlled to detect a specific signal emitted by the vehicle, that is, the alignment test signal. Among them, when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to the speed threshold, the alignment test signal is generated by the driver of the vehicle by toggling the high and low beam alternation control of the vehicle. The optical signal detection device can recognize this change in optical signal and convert it into an electrical signal or a digital signal and send it to the control system (such as an industrial computer). After receiving the alignment test signal, the control system can start the alignment test process for the vehicle's speedometer.

[0060] In this step, after the vehicle enters the test position in the vehicle speed test device, the initial detection position of the optical signal detection device is adjusted to the preset detection position, which can ensure that after the vehicle emits the alignment test signal, the optical signal detection device can receive the alignment test signal in time, avoiding test delay and test error caused by improper device position or inaccurate setting, thereby improving the overall quality of the alignment test of the vehicle speedometer.

[0061] As an optional embodiment, in step S104, in response to the optical signal detection device detecting the alignment test signal, the alignment test of the vehicle speedometer is performed, including: in response to the optical signal detection device detecting the alignment test signal, triggering a data acquisition instruction; in response to the data acquisition instruction, controlling the speed test device to collect the actual vehicle speed; based on the actual vehicle speed and the displayed vehicle speed of the speedometer, performing the alignment test on the vehicle speedometer.

[0062] In this embodiment, when the optical signal detection device (such as a light sensor) successfully detects the alignment test signal emitted by the driving object operating the vehicle (such as switching the high and low beams), this alignment test signal can be fed back to the control system (such as an industrial control computer). After receiving this alignment test signal, the control system confirms that the vehicle currently meets the requirements for the alignment test. In this case, it will immediately trigger a data acquisition instruction.

[0063] Optionally, after responding to the data acquisition instruction, the control system (such as an industrial control computer) will activate the data acquisition function of the speed test device. As introduced above, the speed test device usually includes a set of drums that can simulate the driving state of the vehicle and related speed detection sensors. The speed test device can record the rotation speed of the drums and calculate the actual driving speed of the vehicle based on the diameter and rotation speed of the drums. This process requires a high degree of accuracy and real-time performance to ensure that the collected speed data can be accurately compared with the displayed value of the speedometer.

[0064] Optionally, after collecting the actual vehicle speed, the actual vehicle speed can be compared with the displayed vehicle speed of the speedometer, and then, according to the comparison result, the alignment test of the vehicle speedometer is performed.

[0065] As an optional embodiment, based on the actual vehicle speed and the displayed vehicle speed of the speedometer, the alignment test of the vehicle speedometer is performed, including: determining the speed difference between the actual vehicle speed and the displayed vehicle speed; based on the speed difference and the speed difference threshold, performing the alignment test on the vehicle speedometer to obtain the test result of the vehicle speedometer, where the test result is used to at least indicate that the displayed result of the vehicle speedometer is accurate, or there is an error in the displayed result of the vehicle speedometer.

[0066] In this embodiment, after determining the actual vehicle speed and the displayed vehicle speed on the vehicle's speedometer, the speed difference between the two can be further calculated, and then whether the display of the vehicle's speedometer is correct can be determined based on the speed difference.

[0067] Optionally, in order to ensure the accuracy of the speedometer, a speed difference threshold can be set. This threshold is usually determined based on industry standards and vehicle performance requirements. For example, the speed threshold can be defined by the formula 0 ≤ V1 - V2 ≤ (V2 / 10) + 4, where V1 is used to represent the displayed vehicle speed on the vehicle's speedometer, and V2 is used to represent the actual vehicle speed.

[0068] Optionally, during the calibration test, the actual vehicle speed (V2) measured by the speed test equipment and the vehicle speed (V1) displayed on the speedometer can be monitored in real time. By comparing the two, the speed difference (V1 - V2) can be calculated, and this speed difference is the direct basis for judging the display accuracy of the speedometer.

[0069] Optionally, after calculating the speed difference between the displayed vehicle speed and the actual vehicle speed of the vehicle, the speed difference can be compared with the speed threshold to further determine whether the display of the vehicle's speedometer is correct.

[0070] Next, the process of determining the display result of the vehicle's speedometer based on the comparison result between the speed difference and the speed threshold range will be introduced.

[0071] As an optional implementation, based on the speed difference and the speed difference threshold, determining the test result of the vehicle's speedometer includes: in response to the speed difference being within the speed difference threshold range, determining that the test result of the vehicle's speedometer is that the display result of the vehicle's speedometer is accurate; in response to the speed difference being outside the speed difference threshold range, determining that the test result of the vehicle's speedometer is that there is an error in the display result of the vehicle's speedometer.

[0072] In this embodiment, assuming the speed difference threshold range is [0, (V2 / 10) + 4], based on this, the difference (V1 - V2) between the displayed vehicle speed V1 and the actual vehicle speed V2 of the vehicle's speedometer can be compared with the speed threshold [0, (V2 / 10) + 4], and whether the display of the vehicle's speedometer is accurate can be determined according to the comparison result.

[0073] Optionally, if the speed difference (V1 - V2) falls within the set speed threshold range, that is, 0 ≤ V1 - V2 ≤ (V2 / 10) + 4, it is determined that the display result of the vehicle's speedometer is accurate and the test result is qualified. This means that the difference between the displayed speed of the speedometer and the actual driving speed of the vehicle is within an acceptable range, and the calibration of the speedometer at this speed point is effective.

[0074] Optionally, if the speed difference (V1 - V2) exceeds the threshold range, the test result will be judged as unqualified, that is, there is an error in the display result of the vehicle's speedometer. In this case, the speedometer needs to be further calibrated or repaired to ensure that its display accuracy at all driving speeds meets safety and performance standards.

[0075] As an alternative implementation, when there is an error in the display of the vehicle's speedometer, the method for aligning the vehicle's speedometer further includes: calibrating the vehicle's speedometer based on the speed difference.

[0076] In the above embodiment, if the speed difference exceeds the preset speed threshold range, it indicates that there is an error in the display of the vehicle's speedometer. In this case, the vehicle's speedometer can be calibrated according to the speed difference to ensure that the display result of the speedometer is consistent with the actual driving speed of the vehicle.

[0077] Optionally, based on the speed difference, a specific calibration algorithm is used to compensate for the difference between the speedometer and the actual vehicle speed, thereby achieving calibration of the vehicle's speedometer. After calibration, the vehicle will pass through the speed test device again to conduct the second or multiple alignment tests to verify whether the calibration is effective. During the test process, the speed difference between the actual vehicle speed and the displayed vehicle speed of the vehicle's speedometer can continue to be detected to ensure that it is within the allowable error range, thereby confirming that the display accuracy of the speedometer has been improved.

[0078] It should be noted that the above embodiments of the present invention can be implemented by an industrial control computer, which can be referred to as a control system.

[0079] Next, the technical solutions of the embodiments of the present invention will be illustrated by combining preferred implementation manners.

[0080] Currently, when conducting the alignment test of the vehicle's speedometer, the remote control alignment test method or having maintenance personnel complete the alignment operation of the vehicle is usually adopted. Among them, when using the remote control for the alignment test, an additional remote control needs to be configured, and due to the different lengths of vehicle bodies, a return device also needs to be configured, increasing the complexity and cost of the operation. When using manual alignment testing, it depends on the judgment of technicians and is easily affected by environmental interference and personal experience, resulting in inconsistent test results. That is to say, whether it is remote control alignment or manual alignment, additional manpower and time are required to complete, resulting in a low alignment efficiency of the vehicle's speedometer.

[0081] In view of the above technical problems, an embodiment of the present invention provides a method for calibrating the speedometer of a vehicle, aiming to improve the efficiency of the calibration test of the vehicle. When the vehicle enters the speed test equipment and the driving speed of the vehicle reaches the preset calibration speed (for example, 40 km / h), the driver sends a calibration test signal by switching the high and low beams of the vehicle's headlights. After receiving the calibration test signal, the light sensor feeds it back to the industrial control computer. The industrial control computer controls data acquisition and speed test according to the received signal, conducts a calibration test on the speedometer, and judges the accuracy of the speedometer based on the difference between the actual vehicle speed and the displayed vehicle speed. Finally, the industrial control computer also controls the cylinder of the calibration measurement device to lift, allowing the vehicle to drive out and completing the entire test process. That is, in the embodiment of the present invention, by using a light sensor for automatic calibration confirmation, not only the operation process is optimized, the dependence on the remote control and its return device is reduced, but also the potential errors caused by manual operation are avoided, and the accuracy and efficiency of calibration are improved.

[0082] Optionally, Figure 2 is a schematic diagram of a calibration measurement device according to an embodiment of the present invention. As Figure 2 shown, the calibration measurement device consists of a cylinder 201, a fiber optic amplifier 202, a light sensor 203, a buffer 204, a pneumatic component installation box 205, and a connecting mechanism.

[0083] During the calibration confirmation process, the cylinder 201 is used to control the lifting of the light sensor 203. When the vehicle enters the measurement position, the cylinder 201 receives an instruction from the industrial control computer and drives the light sensor 203 to drop to the detection position to prepare for receiving the signal; after the detection is completed, the cylinder 203 then lifts the light sensor to avoid hindering the entry of subsequent vehicles.

[0084] During the calibration confirmation process, the fiber optic amplifier 202 is used to enhance the intensity of the optical signal, ensuring that even in an environment with poor lighting conditions, the light sensor 203 can still accurately capture the change in the signal, improving the stability of signal transmission.

[0085] The light sensor 203 is the core component of the calibration test and is used to receive the change in the optical signal from the vehicle's headlight. When the driver switches the high and low beams of the headlights, the light sensor 203 can capture the difference in light intensity and convert it into an electrical signal for subsequent calibration confirmation.

[0086] The function of the buffer 204 is to reduce the impact and vibration when the light sensor 203 drops or lifts, ensuring the stability of the light sensor and extending its service life. The buffer 204 is located between the light sensor 203 and the cylinder 201 and can provide the necessary damping effect to make the sensor operation smoother.

[0087] The pneumatic component installation box 205 is used to encapsulate and protect pneumatic control components such as cylinders, solenoid valves, and pressure regulators. It provides a safe physical environment for these pneumatic control components that are vulnerable to external environmental influences (such as dust, moisture, physical impact, etc.), ensuring that the pneumatic control components can operate normally without damage during the alignment test.

[0088] The connection mechanism is a structure for connecting components such as a light sensor, a light amplifier, and a cylinder together, ensuring that each component can work cooperatively and also facilitating the installation and maintenance of the device.

[0089] The design of the entire alignment test device aims to achieve automated and intelligent speedometer alignment testing. The vehicle signal is captured by the light sensor, enhanced by the light amplifier, and then the signal is fed back to the industrial control computer to complete the alignment confirmation. The use of the cylinder and the buffer ensures the stability and safety of the device during operation, while the connection mechanism provides the physical connection and signal transmission path between the internal components of the device.

[0090] Optionally, before the vehicle enters the test position of the speed test equipment, the alignment measurement device is in the open state, and the cylinder 203 supports the light sensor 203 to rise. Here, the light sensor 203 is in a non-operating state. Figure 3 It is a schematic diagram of an alignment measurement device in the open state according to an embodiment of the present invention.

[0091] Optionally, after the vehicle enters the test position of the speed test equipment, the alignment measurement device is in the working state. The industrial control computer transmits the detection signal to the alignment measurement device, and the cylinder 201 drives the light sensor 203 to drop and enter the working state. Figure 4 It is a schematic diagram of an alignment measurement device in the working state according to an embodiment of the present invention.

[0092] Optionally, when performing the alignment measurement of the vehicle's speedometer, the driver first increases the vehicle speed to the preset calibration speed. Then, the high and low beam alternation control is toggled, and the light of the vehicle's headlight changes. After the light sensor receives the high and low beam alternation signal, it confirms that it has received the alignment test signal and feeds back the alignment test signal to the industrial control computer. After receiving the alignment test signal, the industrial control computer starts the alignment test process.

[0093] Optionally, during the table alignment test, the actual driving speed of the vehicle is collected by a speed test device, and the displayed vehicle speed on the vehicle's speedometer is recorded. The speed difference between the actual driving speed of the vehicle and the displayed vehicle speed on the vehicle's speedometer is compared with a preset speed threshold range to determine the table alignment test result of the vehicle's speedometer. Among them, if the speed difference is within the speed threshold range, it indicates that the vehicle's speedometer displays accurately and the table alignment test result is qualified. If the speed difference is outside the speed threshold range, it indicates that there is an error in the display of the vehicle's speedometer and the table alignment test result is unqualified.

[0094] Optionally, in the case where the table alignment test result is unqualified, the vehicle's speedometer can be calibrated to improve the display accuracy of the vehicle's speedometer.

[0095] According to an embodiment of the present invention, there is also provided a table alignment test device for a vehicle's speedometer. It should be noted that this table alignment test device for a vehicle's speedometer can be used to execute the table alignment test method for the vehicle's speedometer in the embodiment.

[0096] Figure 5 is a schematic diagram of a table alignment test device for a vehicle's speedometer according to an embodiment of the present invention. As Figure 5 shown, the table alignment test device 500 for the vehicle's speedometer may include: an identification unit 501, a first control unit 502, a second control unit 503, and a test unit 504.

[0097] The identification unit 501 is configured to identify the identification information of the vehicle in response to the vehicle being in the detection area;

[0098] The first control unit 502 is configured to control the vehicle to drive towards the speed test device in response to identifying the identification information of the vehicle, where the speed test device is deployed in the detection area;

[0099] The second control unit 503 is configured to control the optical signal detection device to detect the table alignment test signal of the vehicle in response to the vehicle driving into the test position in the speed test device, where the table alignment test signal is triggered when the displayed vehicle speed on the vehicle's speedometer is greater than or equal to the speed threshold;

[0100] The test unit 504 is configured to perform a table alignment test on the vehicle's speedometer in response to the optical signal detection device receiving the table alignment test signal.

[0101] Optionally, the second control unit 503 is further configured to: adjust the initial detection position of the optical signal detection device in response to the vehicle driving into the test position in the speed test device; start the optical signal detection device in response to the adjusted initial detection position being the preset detection position; control the started optical signal detection device to detect the table alignment test signal of the vehicle.

[0102] Optionally, the table alignment test signal is triggered by the driver of the vehicle toggling the high and low beam alternating control of the vehicle.

[0103] Optionally, the test unit 504 is further configured to: in response to the optical signal detection device detecting the table alignment test signal, trigger a data acquisition instruction; in response to the data acquisition instruction, control the speed test device to collect the actual vehicle speed of the vehicle; and perform a table alignment test on the speedometer of the vehicle based on the actual vehicle speed and the displayed vehicle speed on the speedometer.

[0104] Optionally, the test unit 504 is further configured to: determine the speed difference between the actual vehicle speed and the displayed vehicle speed; perform a table alignment test on the speedometer of the vehicle based on the speed difference and the speed difference threshold to obtain the test result of the speedometer of the vehicle, where the test result is used to at least indicate that the display result of the speedometer of the vehicle is accurate, or there is an error in the display result of the speedometer of the vehicle.

[0105] Optionally, the test unit 504 is further configured to: in response to the speed difference being within the speed difference threshold range, determine that the test result of the speedometer of the vehicle is that the display result of the speedometer of the vehicle is accurate; in response to the speed difference being outside the speed difference threshold range, determine that the test result of the speedometer of the vehicle is that there is an error in the display result of the speedometer of the vehicle.

[0106] Optionally, in the case where there is an error in the display of the speedometer of the vehicle, the table alignment test device 500 of the speedometer of the vehicle is further configured to: calibrate the speedometer of the vehicle based on the speed difference.

[0107] In this embodiment, by automatically controlling the vehicle to drive towards the speed test device and using the optical signal detection device to automatically detect the table alignment test signal, the problems of delay and low efficiency caused by manual operation in the traditional method are eliminated. The automated process enables the vehicle to quickly and continuously complete the table alignment test after entering the detection area, significantly improving the table alignment test efficiency of the speedometer, and thus solving the technical problem of low table alignment efficiency of the speedometer of the vehicle.

[0108] An embodiment of the present application further provides an electronic device, including: a memory storing an executable program; a processor for running the program, where when the program runs, it executes the table alignment test method for the speedometer of the vehicle in each embodiment of the present invention.

[0109] An embodiment of the present application further provides a computer-readable storage medium, the computer-readable storage medium including a stored executable program, where when the executable program runs, it controls the device where the computer-readable storage medium is located to execute the table alignment test method for the speedometer of the vehicle in each embodiment of the present invention.

[0110] An embodiment of the present application also provides a computer program product, including a computer program which, when executed by a processor, implements the method for calibration testing of the speedometer of a vehicle in various embodiments of the present invention.

[0111] An embodiment of the present application also provides a computer program product, including a non-volatile computer-readable storage medium for storing a computer program which, when executed by a processor, implements the method for calibration testing of the speedometer of a vehicle in various embodiments of the present invention.

[0112] An embodiment of the present application also provides a computer program which, when executed by a processor, implements the method for calibration testing of the speedometer of a vehicle in the above-mentioned various embodiments of the present invention.

[0113] The serial numbers of the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0114] In the above-mentioned embodiments of the present invention, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0115] In the several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the units or modules can be in electrical or other forms.

[0116] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0117] In addition, the various functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0118] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, read-only memories (ROM for short), random access memories (RAM for short), mobile hard disks, magnetic disks, or optical discs that can store program codes.

[0119] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vehicle speedometer calibration test method, characterized in that: include: In response to a vehicle being in a detection area, identifying identification information of the vehicle; In response to identifying the identification information of the vehicle, controlling the vehicle to travel toward a speed testing device, wherein the speed testing device is deployed in the detection area; In response to the vehicle entering the test position in the speed test device, controlling the optical signal detection device to detect a speedometer test signal of the vehicle, wherein the speedometer test signal is triggered when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to a speed threshold; In response to the optical signal detection device detecting the meter test signal, a meter test is performed on the speedometer of the vehicle.

2. The method according to claim 1, characterized in that In response to the vehicle entering a test position in the speed test device, controlling the optical signal detection device to detect a table test signal of the vehicle includes: In response to the vehicle entering a test position in the speed test device, adjusting an initial detection position of the optical signal detection device; In response to the adjusted initial detection position being a preset detection position, starting the optical signal detection device; The optical signal detection device is controlled to detect the alignment test signal of the vehicle after being started.

3. The method according to claim 2, characterized in that The table test signal is triggered by the driver of the vehicle turning on the high and low beam alternation control of the vehicle.

4. The method according to claim 1, characterized in that: In response to the optical signal detection device detecting the meter test signal, performing a meter test on the speedometer of the vehicle, including: In response to the optical signal detection device detecting the table test signal, triggering a data acquisition instruction; In response to the data collection instruction, controlling the speed test device to collect the actual speed of the vehicle; Based on the actual vehicle speed and the displayed vehicle speed of the speedometer, a speedometer test is performed on the vehicle.

5. The method according to claim 4, characterized in that Based on the actual vehicle speed and the displayed vehicle speed of the speedometer, a speedometer comparison test is performed on the vehicle, including: determining a speed difference between the actual vehicle speed and the displayed vehicle speed; Based on the speed difference and the speed difference threshold, the speedometer of the vehicle is tested to obtain a test result of the speedometer of the vehicle, wherein the test result is used to at least indicate that the display result of the speedometer of the vehicle is accurate, or that the display result of the speedometer of the vehicle has an error.

6. The method according to claim 5, characterized in that Determining a test result of a speedometer of the vehicle based on the speed difference and the speed difference threshold includes: In response to the speed difference being within the speed difference threshold range, determining that a test result of the speedometer of the vehicle is that a display result of the speedometer of the vehicle is accurate; In response to the speed difference being outside the speed difference threshold range, it is determined that a test result of the speedometer of the vehicle is that an error exists in a display result of the speedometer of the vehicle.

7. The method according to claim 6, characterized in that In the case where there is an error in the display result of the speedometer of the vehicle, the method further includes: A speedometer of the vehicle is calibrated based on the speed difference.

8. A vehicle speedometer test device, characterized in that: include: an identification unit, configured to identify identification information of the vehicle in response to the vehicle being in the detection area; a first control unit, configured to control the vehicle to travel toward a speed test device in response to identifying the identification information of the vehicle, wherein the speed test device is deployed in the detection area; A second control unit is used to control the optical signal detection device to detect a speedometer test signal of the vehicle in response to the vehicle entering a test position in the speed test device, wherein the speedometer test signal is triggered when the displayed vehicle speed of the vehicle's speedometer is greater than or equal to a speed threshold; The testing unit is used for performing a meter alignment test on the speedometer of the vehicle in response to the optical signal detection device receiving the meter alignment test signal.

9. An electronic device, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 7 when running.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

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