Method for carrying out batch light function test verification on vehicle lamp by using WIOTa network
Through the WIoTa network architecture and dynamic networking design, the problems of low efficiency and poor adaptability in traditional vehicle lighting testing have been solved, realizing efficient and low-cost batch automated testing of vehicle lighting functions, especially in terms of compatibility with different vehicle models and functions, and possessing comprehensive functional verification capabilities.
Patent Information
- Application Number
- CN202511713949.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-02-13
AI Technical Summary
Traditional vehicle lighting testing methods are inefficient and inconsistent, making it difficult to achieve large-scale automated batch testing of vehicle lighting functions at low cost. In particular, their poor adaptability to different vehicle models and functions leads to high testing complexity and cost.
It adopts a WIoTa network architecture, including a PC control center module, a WIoTa gateway module, WIoTa sub-nodes and vehicle light node modules. It communicates via Ethernet and wireless protocols to achieve centralized command issuance and data processing. Combined with dynamic networking and protocol conversion, it is compatible with different vehicle models. It has a built-in scenario-based test command library and uses camera group modules for data verification.
It enables large-scale automated batch testing of vehicle lights, improving testing efficiency and consistency, reducing testing complexity and cost, covering complex scenario-based functions of intelligent headlights, and possessing efficient functional verification capabilities.
Smart Images
Figure CN121521415A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle lamp detection, in particular to a method for testing and verifying the light function of vehicle lamps in batches by using a WIoTa network. BACKGROUND
[0002] The vehicle lamp test in the automotive industry is a series of detection processes for verifying whether the performance of vehicle lamps meets the regulatory standards and usage requirements, and the core is to ensure driving safety and usage reliability. It generally includes optical performance testing, environmental reliability testing, electrical performance testing, mechanical and appearance testing, so as to ensure that the lighting / signal function of the vehicle lamp meets the national and international regulations, the stability in complex environments, and whether it can match the overall design of the vehicle, thereby ensuring installation adaptability and appearance consistency.
[0003] The traditional vehicle lamp test method relies on manual operation or semi-automatic equipment, which is low in efficiency and poor in consistency, and for modern intelligent headlamps (such as matrix LED and adaptive driving beam ADB), the function test not only involves basic photoelectric parameters (such as voltage, current, brightness, color temperature), but also includes complex scenario-based function verification, such as lane keeping light carpet, welcome light shape, anti-dazzling, etc. The prior art cannot realize large-scale batch automatic testing of vehicle lamp functions at low cost, especially when covering multiple vehicle models and multiple function test scenarios, different test equipment needs to be configured for different models of vehicle lamps, increasing complexity and cost. SUMMARY
[0004] (I) Technical problems solved:
[0005] In view of the deficiencies of the prior art, the present application provides a method for testing and verifying the light function of vehicle lamps in batches by using a WIoTa network, which solves the problem of being difficult to realize large-scale batch automatic testing of vehicle lamps at low cost, and the need to configure different test equipment when adapting to different vehicle models and functions, resulting in low efficiency, complexity and high cost.
[0006] (II) Technical solutions:
[0007] To achieve the above purpose, the present application is implemented by the following technical solutions: a method for testing and verifying the light function of vehicle lamps in batches by using a WIoTa network, comprising:
[0008] A PC control center module with Ethernet communication capability for initiating test procedures, issuing test instructions, receiving and storing test data, comparing and analyzing test data, and automatically generating test reports;
[0009] A WloTa gateway module including a WloTa master node and a plurality of WloTa slave nodes;
[0010] The WloTa master node is connected with the PC control center module through Ethernet and communicates with a plurality of WloTa slave nodes through WloTa wireless protocol for network management, broadcasting instructions issued by the PC control center module to each WloTa slave node, receiving data of the WloTa slave nodes and uploading the data to an Internet of Things management platform.
[0011] The WloTa slave node is used for collecting field data and uploading the data to the WloTa master node.
[0012] The car light node module is connected with the WloTa slave node and a car light, used for receiving test instructions forwarded by the WloTa slave node and executing light function actions, and feeding back state data of itself.
[0013] Preferably, the system further comprises:
[0014] The camera group module is connected with the PC control center module through Ethernet, used for synchronously collecting lighting image data and image collection parameters when the car light node module executes light function actions, and transmitting the collected data to the PC control center module.
[0015] Preferably, the PC control center module is internally provided with a test instruction library, and the test instruction library comprises lane keeping light carpet, welcome light shape and anti-dazzling scene function test instructions.
[0016] Preferably, the WloTa master node supports a dynamic network forming function, and when a new WloTa slave node is connected to the network, the identity authentication and address allocation of the WloTa slave node are automatically completed and synchronized to the PC control center module.
[0017] Preferably, each of the WloTa slave nodes adopts a WloTa slave node architecture, and the WloTa slave node architecture comprises:
[0018] A CAN protocol to WloTa protocol module;
[0019] A WloTa protocol to CAN protocol module;
[0020] A WloTa integrated chip module, connected with the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module, used for receiving conversion data of the CAN protocol to WloTa protocol module and sending the data through wireless mode, and also used for receiving external WloTa network data and transmitting the data to the WloTa protocol to CAN protocol module, so as to realize bottom layer communication processing of the WloTa protocol.
[0021] Preferably, the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module both have data checking functions, and the integrity of the data before and after conversion is verified through a CRC checking algorithm to avoid data loss or errors during protocol conversion.
[0022] Preferably, the WloTa sub-node architecture further comprises:
[0023] The CAN integrated chip module is connected with the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module respectively, and is used for accessing the CAN bus to receive and send CAN protocol data, transmitting the CAN bus data to the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module, receiving the data uploaded by the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module to the CAN bus, and completing the bottom protocol processing and bus adaptation of the CAN protocol.
[0024] The power module is connected with the CAN protocol to WloTa protocol module, the WloTa protocol to CAN protocol module, the WIoTa integrated chip module and the CAN integrated chip module respectively, and is used for stably converting an input voltage into a working voltage suitable for each module, providing stable power support for each module, and ensuring power supply adaptation in a low-power consumption scene.
[0025] Preferably, the PC control center module associates and checks the state data fed back by the vehicle lamp node module with the lighting image data collected by the camera group module, and when the matching degree of the state data and the image data is lower than a preset threshold, the test is marked as abnormal and difference information is recorded.
[0026] Preferably, the vehicle lamp node module is connected with a vehicle lamp and collects vehicle lamp state information in real time.
[0027] Preferably, the vehicle lamp node module keeps the uploading frequency of the detected vehicle lamp dynamic data consistent with the issuing frequency of the test instruction.
[0028] (Three) beneficial effects:
[0029] The method for testing and verifying the light function of vehicle lamps in batches by using a WIoTa network has the following beneficial effects:
[0030] 1. The method for testing and verifying the light function of vehicle lamps in batches by using a WIoTa network realizes the batch automatic testing of large-scale vehicle lamps by using a WIoTa wireless network architecture and a hierarchical networking design, combining the centralized instruction issuing and data processing of a PC control center, and solves the defects of low efficiency and poor consistency in traditional manual or semi-automatic testing.
[0031] 2. The method for testing and verifying the light function of vehicle lamps in batches through a WIoTa network, which is compatible with vehicle lamps of different models and different communication protocols through the protocol conversion module and dynamic networking function of the WIoTa sub-node, and does not need to configure exclusive test equipment for a specific model, thereby solving the defects of poor adaptability, high test complexity and cost in the prior art.
[0032] 3. The method for testing and verifying the light function of vehicle lamps in batches through a WIoTa network, which covers the complex functions of intelligent headlamps such as lane keeping light carpet and anti-dazzling through the built-in scene-based test instruction library, and realizes comprehensive function verification by combining the correlation verification of vehicle lamp state data and camera image data, thereby solving the defect that traditional tests are difficult to cover the complex scene-based functions of intelligent headlamps. BRIEF DESCRIPTION OF DRAWINGS
[0033] Figure 1 The system block diagram of the present application;
[0034] Figure 2 The data flow timing diagram of the present application. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0036] Embodiment one
[0037] Reference Figure 1 and Figure 2 A method for testing and verifying the light function of vehicle lamps in batches through a WIoTa network according to a preferred embodiment of the present application will be described in detail below, including:
[0038] The PC control center module has Ethernet communication capability, is used for initiating a test process, issuing test instructions, receiving and storing test data, comparing and analyzing test data, and automatically generating a test report, and the Ethernet communication capability of the PC control center module ensures the high speed and stability of data transmission with other modules, and the centralized instruction issuing and data processing function greatly improves the efficiency of batch testing and avoids instruction delay or data confusion caused by decentralized control.
[0039] The WloTa gateway module includes a WloTa master node and a plurality of WloTa slave nodes, and through hierarchical design of the WloTa master node and the plurality of WloTa slave nodes, unified management of a large number of vehicle lamp nodes is realized, and the communication load of a single node is reduced through distributed collection, thereby adapting to the needs of concurrent communication of multiple nodes in a batch test scenario.
[0040] The WloTa master node is connected with the PC control center module through Ethernet, and communicates with the plurality of WloTa slave nodes through a WloTa wireless protocol, is used for network management, broadcasts instructions issued by the PC control center module to the WloTa slave nodes, receives data of the WloTa slave nodes and uploads the data to an Internet of Things management platform, and through the WloTa wireless protocol communication, the WloTa slave nodes can be deployed in a vehicle lamp test site, and the network management realizes orderly control of the entire wireless communication network, bidirectional interaction of instruction broadcasting and data collection and uploading, thereby ensuring accurate transmission of test instructions and complete recovery of test data.
[0041] The WloTa slave node is used for collecting on-site data and uploading the data to the WloTa master node, the WloTa slave node is a collection unit of vehicle lamp data, can capture original data of vehicle lamp operation in real time, thereby avoiding data loss caused by long-distance transmission, and through deployment of multiple WloTa slave nodes, batch test data collection can be realized.
[0042] The vehicle lamp node module is connected with the WloTa slave node and the vehicle lamp, is used for receiving test instructions forwarded by the WloTa slave node and executing light function actions, and feeding back state data of itself, the vehicle lamp node module is directly connected with the vehicle lamp, thereby realizing testing of a state of the vehicle lamp according to the instructions, and through feeding back the test state of the vehicle lamp to the PC control center module, the PC control center module can monitor test progress and operation of each vehicle lamp in real time.
[0043] Further comprising:
[0044] The camera group module is connected with the PC control center module through Ethernet, is used for synchronously collecting lighting image data and image collection parameters when the vehicle lamp node module executes light function actions, and transmitting the collected data to the PC control center module, the image data serves as evidence of a state of the vehicle lamp, can complement the state data fed back by the vehicle lamp node module, improve accuracy, and synchronous recording of the image collection parameters provides an environmental reference for subsequent data verification, thereby avoiding misjudgment caused by relying on a single data source.
[0045] The PC control center module is built-in with a test instruction library, the test instruction library includes a lane keeping light carpet, a welcome light shape and a glare prevention scenario function test instruction, to increase complex scenario function verification functions, and further comprises:
[0046] The high beam / low beam switching test instruction of the headlamp avoids night driving accidents;
[0047] The rear position lamp / brake lamp lighting test instruction is used to prompt the position of the vehicle and warn the following vehicle to slow down, thereby preventing rear-end collisions;
[0048] The turn signal / flashing light cycle test instruction is used as a signal for lane changing or turning, and is used for warning in lane changing or emergency situations.
[0049] The vehicle lamp node module is connected with the vehicle lamp to collect real-time vehicle lamp state information, thereby ensuring the timeliness and accuracy of vehicle lamp state information collection and avoiding signal interference or delay that may occur in intermediate relay links.
[0050] The following is the entire working process and working principle of the above embodiment:
[0051] The PC control center module is connected with the WIoTa gateway module through Ethernet, scans and identifies the vehicle lamp nodes to be tested within the communication range to establish a test network, and then issues test instructions from the built-in test instruction library containing multiple functions. The WIoTa master node broadcasts the instructions to each WIoTa slave node, which transmits them to the vehicle lamp node module. The vehicle lamp node module is directly connected with the vehicle lamp, executes the corresponding light function action, and collects real-time fault state, lighting mode, and other state data and feeds them back to the WIoTa slave node. At the same time, the camera group module synchronously collects vehicle lamp lighting image data and image acquisition parameters and transmits them to the PC control center module through Ethernet. The WIoTa slave node uploads the received vehicle lamp state data to the WIoTa master node, which then forwards it to the PC control center module. Finally, the PC control center module stores and compares the received vehicle lamp state data and image data, generates a test report automatically, and realizes batch and automated vehicle lamp function testing.
[0052] Example Two
[0053] Reference Figure 1 and Figure 2 The WIoTa master node supports dynamic networking function. When a new WIoTa slave node is added to the network, it automatically completes the identity authentication, address allocation of the WIoTa slave node, and synchronizes to the PC control center module. Dynamic networking can improve the scalability of the test system. When the number of test vehicle lamps increases, the newly added WIoTa slave node can quickly access the network without manual configuration. Identity authentication can prevent data leakage or instruction interference caused by illegal node access. Address allocation realizes the unique identification of the WIoTa slave node, which facilitates the PC control center to accurately manage each WIoTa slave node corresponding to the vehicle lamp.
[0054] The plurality of WloTa sub-nodes all adopt a WloTa sub-node architecture, which comprises:
[0055] The CAN protocol to WloTa protocol module realizes bidirectional conversion between the CAN bus protocol and the WloTa wireless protocol, so that the traditional vehicle lamp using the CAN bus can be seamlessly connected to the WloTa wireless network, thereby realizing compatibility of different types of vehicle lamps.
[0056] The WloTa protocol to CAN protocol module cooperates with the CAN protocol to WloTa protocol module to form a complete protocol conversion link, ensuring that the instructions transmitted by the WloTa network can be accurately converted into CAN protocol instructions and delivered to the vehicle lamp, and the CAN protocol state data of the vehicle lamp can also be smoothly converted into WloTa protocol data for uploading, thereby ensuring bidirectional smoothness of the instruction issuing and data feedback.
[0057] The WloTa integrated chip module is connected with the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module, and is used for receiving the converted data of the CAN protocol to WloTa protocol module and transmitting the data through a wireless manner, and is also used for receiving external WloTa network data and transmitting the data to the WloTa protocol to CAN protocol module, thereby realizing bottom layer communication processing of the WloTa protocol. The WloTa integrated chip module is the core hardware of the WloTa sub-node, can provide a stable wireless transmission channel for the data converted by the protocol, and ensures the standard operation of the WloTa protocol through the bottom layer communication processing function thereof. The connection of the WloTa integrated chip module with the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module builds a complete link for data transmission of the WloTa sub-node, thereby ensuring reliability and standardization of the data transmission.
[0058] Both the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module have a data checking function, and the CRC checking algorithm is used to verify the integrity of the data before and after conversion, thereby avoiding data loss or errors in the protocol conversion process. The CRC checking algorithm is an existing algorithm, which can effectively identify the loss or errors of the data caused by interference or transmission errors in the protocol conversion process, thereby ensuring that the test data transmitted to the PC control center and the test instructions issued to the vehicle lamp are accurate.
[0059] The WloTa sub-node architecture further comprises:
[0060] The CAN integrated chip module is connected with the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module respectively, and is used for accessing the CAN bus to receive and send CAN protocol data, transmitting the CAN bus data to the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module, receiving the data uploaded by the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module to the CAN bus, and completing the bottom layer protocol processing and bus adaptation of the CAN protocol. The CAN integrated chip module can realize the adaptation of the WIoTa sub-node and the CAN bus, the bottom layer protocol function thereof can ensure the standard transmission of the CAN data, and the CAN bus can enable the WIoTa sub-node to be compatible with CAN bus vehicle lamps of different specifications, thereby expanding the application range of the test system.
[0061] The power module is connected with the CAN protocol to WIoTa protocol module, the WIoTa protocol to CAN protocol module, the WIoTa integrated chip module and the CAN integrated chip module respectively, and is used for stably converting the input voltage into the working voltage suitable for each module, providing stable power support for each module, and ensuring the power supply adaptation in the low-power consumption scene.
[0062] The PC control center module associates and checks the state data fed back by the vehicle lamp node module with the lighting image data collected by the camera group module, and when the matching degree of the state data and the image data is lower than a preset threshold, the test is marked as abnormal and the difference information is recorded, so that the accuracy is higher than that of single data checking, the setting of the preset threshold provides a clear standard for abnormal judgment, and the consistency and objectivity of abnormal identification are ensured. The record of the difference information can provide clear basis for subsequent fault troubleshooting, and the problem tracing ability of batch testing is improved.
[0063] The uploading frequency of the vehicle lamp node module for the detected vehicle lamp dynamic data is consistent with the issuing frequency of the test instruction, so that the vehicle lamp dynamic data corresponding to each test instruction can be accurately matched, the data time sequence dislocation caused by inconsistent frequencies is avoided, the PC control center can accurately associate the instruction and the feedback data, and the analysis accuracy of the test data and the accuracy of the abnormal judgment are improved.
[0064] The following is the whole working process and working principle of the above embodiment:
[0065] Firstly, the WIoTa master node relies on the dynamic networking function to automatically complete the identity authentication and address allocation of the newly added WIoTa slave nodes, and synchronizes the relevant information to the PC control center module, realizing the flexible expansion and accurate management and control of the test network. After the PC control center module issues a test instruction, the instruction is transmitted to the WIoTa master node through Ethernet, and then broadcasted to each WIoTa slave node by the master node through the WIoTa wireless protocol. Each WIoTa slave node processes data based on its own architecture, first converts the WIoTa protocol format instruction into CAN protocol format through the WloTa protocol to CAN protocol module, and then sends the converted instruction to the vehicle lamp node module through the CAN integrated chip module accessing the CAN bus. The vehicle lamp node module receives the instruction and executes the light function action, while real-time collecting vehicle lamp dynamic data. The collected data is fed back to the WIoTa slave node through the CAN bus at a frequency consistent with the issuance of the test instruction. The slave node converts the CAN protocol data into WIoTa protocol data through the CAN protocol to WloTa protocol module, and then uploads it to the WIoTa master node through the WloTa integrated chip module. The master node transmits the data back to the PC control center module through Ethernet. During this period, the power module in the WIoTa slave node architecture provides stable and adaptive working voltage for the CAN protocol to WloTa protocol module, WloTa protocol to CAN protocol module, WIoTa integrated chip module and CAN integrated chip module, ensuring the stable operation of each module with low power consumption. The PC side associates and checks the state data and image data fed back by the vehicle lamp node module. If the matching degree is lower than the preset threshold, it is marked as test abnormal and the difference information is recorded. After completing the data comparison and analysis, the test report is automatically generated, realizing efficient and reliable test and verification of batch vehicle lamp functions.
[0066] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A method for batch testing and verification of vehicle headlight functionality using a WIoTa network, characterized in that, include: The PC control center module has Ethernet communication capabilities and is used to initiate test processes, issue test commands, receive and store test data, compare and analyze test data, and automatically generate test reports. The WloTa gateway module includes a WloTa master node and several WloTa child nodes; The WloTa master node is connected to the PC control center module via Ethernet and communicates with several WloTa sub-nodes via the WloTa wireless protocol. It is used for network management, broadcasting instructions issued by the PC control center module to each WloTa sub-node, receiving data from the WloTa sub-nodes and uploading the data to the IoT management platform. The WloTa child node is used to collect field data and upload it to the WloTa master node; The vehicle headlight node module is connected to the WloTa child node and the vehicle headlight. It is used to receive test commands forwarded by the WloTa child node and execute the headlight function actions, while also feeding back its own status data.
2. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that, Also includes: The camera module is connected to the PC control center module via Ethernet. It is used to synchronously collect the illumination image data and image acquisition parameters when the vehicle light node module performs the light function action, and transmit the collected data to the PC control center module.
3. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that: The PC control center module has a built-in test instruction library, which includes test instructions for lane keeping light carpet, welcome light pattern, and anti-glare scene-based functions.
4. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that: The WIoTa master node supports dynamic networking. When a new WIoTa child node is added to the network, it automatically completes the identity authentication and address allocation of the WIoTa child node and synchronizes it to the PC control center module.
5. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that: Several of the aforementioned WloTa child nodes adopt a WloTa child node architecture, which includes: CAN protocol to WloTa protocol module; WLoTa protocol to CAN protocol module; The WloTa integrated chip module is connected to the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module. It is used to receive the converted data from the CAN protocol to WloTa protocol module and transmit it wirelessly. It is also used to receive external WIoTa network data and transmit it to the WloTa protocol to CAN protocol module, thereby realizing the underlying communication processing of the WloTa protocol.
6. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 5, characterized in that: Both the CAN protocol to WloTa protocol module and the WloTa protocol to CAN protocol module have data verification functions. They use the CRC check algorithm to verify the integrity of the data before and after the conversion, so as to avoid data loss or errors during the protocol conversion process.
7. The method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 6, characterized in that: The WloTa child node architecture also includes: The CAN integrated chip module is connected to the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module respectively. It is used to access the CAN bus to receive and send CAN protocol data, transmit CAN bus data to the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module, and also receive data from the CAN protocol to WIoTa protocol module and the WIoTa protocol to CAN protocol module and upload it to the CAN bus, thus completing the underlying protocol processing and bus adaptation of the CAN protocol. The power supply module is connected to the CAN protocol to WLoTa protocol module, the WLoTa protocol to CAN protocol module, the WIoTa integrated chip module, and the CAN integrated chip module, respectively. It is used to stably convert the input voltage into the working voltage adapted to each module, provide stable power support for each module, and ensure power supply adaptation in low power consumption scenarios.
8. A method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 2, characterized in that: The PC control center module correlates and verifies the status data fed back by the vehicle light node module with the illumination image data collected by the camera group module. When the matching degree between the status data and the image data is lower than a preset threshold, it is marked as a test anomaly and the difference information is recorded.
9. A method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that: The headlight node module is connected to the headlights and collects headlight status information in real time.
10. A method for batch testing and verification of vehicle headlight functionality using a WIoTa network according to claim 1, characterized in that: The frequency at which the vehicle light node module uploads the detected dynamic data of the vehicle lights is consistent with the frequency at which test commands are issued.