Unattended environment screening test system and method thereof

Abstract

The invention provides an unattended environment screening test system and a method thereof. The unattended environment screening test system is composed of environment test equipment, a multi-channel automatic line changing device, test equipment and a management server. Wherein the environment test equipment is used for simulating different temperature, humidity, air pressure and other use environments of a tested product; the multi-channel automatic wire changing device is used for switching test cables so as to realize simultaneous test of a plurality of products; the test equipment is used for detecting detailed performance parameters of the tested product; the management server is used for carrying out centralized management on test equipment, environment test equipment, tested products, test states and the like in a production line, guiding the test equipment and the environment test equipment to carry out automatic testing according to a preset test process, recording the operation condition of each equipment and the process condition of each test task at the same time, and outputting the result. And the test data is stored in a database. The system can effectively reduce the workload of manual operation, and improves the resource utilization rate, the production efficiency, and the automation and informatization level of a production line.

Description

Technical Field

[0001] The present invention relates to the technical field of automated testing, and in particular to a fully automatic unattended testing system and method for a product environmental screening test. Background Art

[0002] Aerospace products are characterized by high reliability. During the production process of aerospace products, especially in batch production, comprehensive and strict environmental screening tests must be carried out on the products, including high temperature test, low temperature test, temperature cycle test and other tests. Each test relies on manual work such as equipment docking, cable interconnection, performance testing, data recording, and post-test recovery. The work efficiency is relatively low, and the production line efficiency cannot be fully utilized. Summary of the invention

[0003] The purpose of the present invention is to provide a fully automatic unattended environmental screening test system and method which can effectively reduce the workload of manual operation and improve the resource utilization, production efficiency, automation and information level of the production line.

[0004] In order to achieve the above objectives, the present invention is implemented by the following technical solutions:

[0005] An unattended environmental screening test system comprises: environmental test equipment, which is used to simulate the use environment of a product under test, and a plurality of products under test are arranged in the environmental test equipment; a multi-channel automatic line changing device, which is used to switch test cables to achieve simultaneous testing of a plurality of products under test; test equipment, which is used to detect detailed performance parameters of the products under test; and a management server, which is used to centrally manage the test equipment, environmental test equipment, products under test, test status, etc. in the production line, guide the test equipment and the environmental test equipment to perform automated testing according to a preset test process, and record the operating status of each device and the process status of each test task, and store the test data in a database.

[0006] Optionally, the management server, environmental test equipment, test equipment, and multi-channel automatic line changing device are all connected to the same local area network and interact with each other using TCP or UDP communication.

[0007] Optionally, the management server includes: a personnel authority management module for establishing multi-level user access rights and data permissions; an equipment management and control module for managing and controlling test equipment, environmental test equipment, and multi-channel automatic line changing devices; a comprehensive display module for realizing human-computer interaction in the form of a Web interface; an overall display of the test equipment, environmental test equipment, test products, test processes, and operating status in the test, and timely corresponding early warning reminders for the occurrence of abnormal situations; a test process management and control module for managing and controlling the test task process, including the functions of test step setting, environmental test equipment parameter setting, test start, test pause, test termination, and emergency stop; a database storage module for storing information such as test equipment status, environmental test equipment status, tested product status, and test task progress in a local database.

[0008] Optionally, the test equipment includes all the hardware test resources, test interfaces, barcode scanners and computers required for product testing, wherein the computer is used to run the unattended environment screening test control program and the product performance index test program.

[0009] Optionally, the test equipment performs the functions of test resource initialization, equipment self-test, communication interaction, test information display, multi-channel automatic line changing device control, test status control monitoring, and product test program retrieval during the test process.

[0010] Optionally, the multi-channel automatic line changing device includes an equipment frame, a panel assembly, a Z-axis module, an X-axis module, and an electrical control assembly; the panel assembly is fixedly connected to the equipment frame, and includes an input area connected to the test equipment and an output area connected to the product to be tested, the input area includes an input interface, and the output area includes multiple output interfaces for connecting multiple products to be tested; the input interface and the output interface are used to be electrically connected to the product test cable, and the input and output interfaces are electrically connected by cables through the Z-axis module; the Z-axis module includes a first driving electric cylinder and a probe assembly, the probe assembly includes a probe tail and a probe head, and the probe tail The part is electrically connected to the input interface of the panel assembly using a cable, and the probe head is connected to the output interfaces in the output area of ​​the panel assembly by the first driving electric cylinder; the X-axis module includes a second driving electric cylinder, an auxiliary support and a mounting plate, and the Z-axis module is fixed on the mounting plate. The mounting plate moves horizontally along the auxiliary support under the action of the second driving electric cylinder, so that the X-axis module carries the Z-axis module to move horizontally, and is electrically connected to multiple output interfaces one by one to realize the testing of multiple products; the electrical control component includes a power interface, a communication network port, an internal 24V power supply, an electric cylinder controller, a power filter, and an industrial computer.

[0011] Optionally, the interior of the equipment frame is built with aluminum profiles and equipped with four universal casters with brakes at the bottom.

[0012] An unattended environmental screening test method is implemented using the unattended environmental screening test system described above, comprising:

[0013] S1: Connect the environmental test equipment, multi-channel automatic line change device, test equipment and management server to the local area network through the Lan network interface to establish a communication connection and realize data transmission;

[0014] S2: electrically connecting the test interface of the test equipment to the input interface of the input area of ​​the multi-channel automatic line changing device through a test cable;

[0015] S3: placing multiple products to be tested in an environmental test device;

[0016] S4: Passing the same multiple test cables through the cable installation holes of the environmental test equipment and electrically connecting them to the output interfaces of the output area of ​​the multi-channel automatic cable changing device;

[0017] S5: Enter product information and test task process information of the product to be tested into the management server;

[0018] S6: Call the test program in the test equipment through the MES system to start the unattended environment screening test task;

[0019] S7: The management server sends control instructions to the environmental test equipment and the test equipment according to the established steps, and controls the test tasks to be executed step by step;

[0020] S8: The environmental test equipment receives the control command from the management server and sets and maintains the target temperature, humidity, and air pressure parameters;

[0021] S9: The test device receives the control instruction from the management server and starts, pauses, or terminates the test;

[0022] S10: The test equipment sends a cable switching instruction to the multi-channel automatic cable changing device according to the current test progress;

[0023] S11: The multi-channel automatic cable changing device receives a control instruction from the test equipment and switches the test cable to a designated output interface.

[0024] Optionally, during the test process, the test device sends heartbeat messages to the management server at a fixed period. If the heartbeat messages are not received or are received incorrectly for multiple consecutive times, the test device and the management server both issue an error alarm message; the management server sends heartbeat messages to the environmental test device at a fixed period. If the heartbeat messages are not received or are received incorrectly for multiple consecutive times, the management server and the environmental test device both issue an error alarm message.

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

[0026] The present invention combines environmental testing equipment, multi-channel automatic line changing device, test equipment and management server through local area network and test cables to form an unattended environmental screening test system. It realizes unattended fully automatic testing of environmental screening tests of aerospace products. It greatly improves the utilization rate of production line test resources and the all-weather production efficiency of products, and reduces labor costs. The use results show that the unattended environmental screening test system can improve the environmental screening test efficiency of products by at least 100%. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are an embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0028] Figure 1 A schematic diagram of the structure of an unattended environmental screening test system provided by an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the functional modules of the management server;

[0030] Figure 3 This is a schematic diagram of the home page of the comprehensive display module;

[0031] Figure 4 This is a schematic diagram of the test process management interface;

[0032] Figure 5 It is a schematic diagram of the structure of the test equipment;

[0033] Figure 6 Test control program interface for unattended environment screening test;

[0034] Figure 7 It is a schematic diagram of the overall structure of a multi-channel automatic line changing device;

[0035] Figure 8 It is a schematic diagram of the panel component structure;

[0036] Fig. 9 This is a schematic diagram of the Z-axis module structure;

[0037] Fig.10 This is a schematic diagram of the X-axis module structure;

[0038] Fig.11 It is a schematic diagram of the electrical component structure;

[0039] Fig.12 Screening trials test system workflow for unattended environments. DETAILED DESCRIPTION

[0040] The scheme proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purposes, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the accompanying drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0041] The present invention provides an unattended environmental screening test system, comprising environmental test equipment, a multi-channel automatic line change device, a test equipment and a management server. Figure 1 As shown. Environmental test equipment is used to simulate the use environment of the tested product, and multiple tested products are set in the environmental test equipment; multi-channel automatic line change device is used to switch test cables to achieve simultaneous testing of multiple tested products; test equipment is used to detect the detailed performance parameters of the tested products; management server is used to centrally manage the test equipment, environmental test equipment, tested products, test status, etc. in the production line, guide the test equipment and environmental test equipment to perform automated testing according to the preset test process, and record the operating status of each device and the process status of each test task, and store the test data in the database.

[0042] In this embodiment, the management server is developed and deployed with integrated management software and temperature chamber monitoring software for the automated control of the test process and the management and control of the test equipment and environmental test equipment; the test equipment is developed and deployed with batch automatic test control software and product performance automated test software for communication with the management server, automated product performance testing, and multi-channel automatic line-changing device control; the multi-channel automatic line-changing device is developed and deployed with line-changing mechanism control software for controlling the switching of test stations (cables). The management server, environmental test equipment, test equipment, and multi-channel automatic line-changing device are all connected to the same local area network and interact using TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) communication methods.

[0043] The management server includes functional modules such as personnel authority management, equipment management and control, comprehensive display, test process management and control, database storage, etc. Figure 2 shown.

[0044] The personnel authority management module establishes multi-level user access rights and data permissions. Users can view the running status of all test processes they created and manage them by logging into the management interface. The superior user can view and manage all test processes of the subordinate users. At the same time, the server records the user's relevant operation information.

[0045] The equipment management and control module realizes the management and control of test equipment, environmental test equipment, and multi-channel automatic line changer. It realizes the entry and query of the model, custom number, IP address and other information of various equipment in the management server, and dynamically matches and binds with the test process. At the same time, during the test process, the management server completes the control command issuance, information exchange, status acquisition and abnormality inspection of other equipment through the established communication protocol.

[0046] The comprehensive display module uses a Web interface to achieve human-computer interaction. It displays the test equipment, environmental test equipment, test products, test processes, operating status, etc. in an integrated manner, and can promptly issue corresponding warnings for abnormal situations, such as Figure 3 Detailed test process information can be viewed by selecting the current device with the mouse. Authorized users can pause, resume, and terminate the test process.

[0047] The test process management and control module manages and controls the test task process, including test step settings, environmental test equipment parameter settings, test start, test pause, test termination, emergency stop and other functions. Users select relevant test steps to form an orderly custom test process and set the relevant parameters of each step (time, temperature, sequence number, etc.). Figure 4 After the test process starts running, the management server will send control instructions to the test equipment and environmental test equipment according to the established process sequence.

[0048] The database storage module stores information such as the test equipment status, environmental test equipment status, tested product status, and test task progress into the local database for subsequent query and analysis.

[0049] The test equipment includes all the hardware test resources, test interfaces, barcode scanners and computers required for product testing. The computer is used to run the unattended environment screening test control program and product performance index test program, such as Figure 5As shown. During the test, the test equipment performs functions such as test resource initialization, equipment self-test, communication interaction, test information display, multi-channel automatic line change device control, test status control monitoring, and product test program retrieval. Among them, the unattended environment screening test control program and the management server use TCP long connection mode for communication, and a unified protocol format is specified. During the communication process, the received protocol packet is responded to. If one party does not respond within 3s, the message sender resends the current message. If there is no response after 3 transmissions, an error message is triggered. The program interface is as follows Figure 6 shown.

[0050] The multi-channel automatic line changing device includes an equipment frame 1, a panel assembly 2, a Z-axis module 3, an X-axis module 4, and an electrical control assembly 5. The overall composition of the device is as follows: Figure 7 shown.

[0051] The interior of the equipment frame 1 is constructed of aluminum profiles, and four universal casters with brakes are installed at the bottom for easy movement. The X-axis module 4, the Z-axis module 3 and the equipment frame 1 can be separated for easy maintenance. An electrical installation board is installed inside the equipment frame 1.

[0052] The panel assembly 2 is divided into an input area connected to the test equipment and an output area connected to the product to be tested. Figure 8 The input interface and the output interface are used to be electrically connected to the product test cable, and the input and output interfaces are electrically connected by cables through the Z-axis module 3 inside the device. The output area is provided with multiple output interfaces for connecting multiple products to be tested.

[0053] The Z-axis module 3 includes a first driving electric cylinder 31 and a probe assembly 32. Fig. 9 The probe assembly 32 includes a probe tail and a probe head. The probe tail is electrically connected to the input interface of the panel assembly 2 using a cable, and the probe head is driven by the first driving electric cylinder 31 to be plugged into the output area of ​​the panel assembly 2 .

[0054] The X-axis module 4 includes a second driving electric cylinder 41, an auxiliary support member 42 and a mounting plate 43. Fig.10 The Z-axis module 3 is fixed on the mounting plate 43, and the mounting plate 43 moves horizontally along the auxiliary support member 42 under the action of the second driving electric cylinder 41, so that the X-axis module 4 carries the Z-axis module 3 and moves horizontally, and is electrically connected to multiple output interfaces one by one, so as to realize the testing of multiple products.

[0055] The electrical control component 5 includes a power supply interface, a communication network port, an internal 24V power supply, an electric cylinder controller, a power supply filter, an industrial computer, and the like. Fig.11 shown.

[0056] The equipment control system consists of a controller, two electric cylinder controllers and a 485 bus communication module. The controller uses UDP communication to communicate with external test equipment. When receiving instructions from external test equipment, the controller controls the electric cylinder controller through the 485 bus protocol, completes the corresponding execution action, and feeds back the equipment status to the external test equipment.

[0057] The present invention also provides an unattended environmental screening test method, which is implemented by using the unattended environmental screening test system described above, and includes:

[0058] S1: Connect the environmental test equipment, multi-channel automatic line change device, test equipment and management server to the local area network through the Lan network interface to establish a communication connection and realize data transmission;

[0059] S2: electrically connecting the test interface of the test equipment to the input interface of the input area of ​​the multi-channel automatic line changing device through a test cable;

[0060] S3: placing multiple products to be tested in an environmental test device;

[0061] S4: Passing the same multiple test cables through the cable installation holes of the environmental test equipment and electrically connecting them to the output interfaces of the output area of ​​the multi-channel automatic cable changing device;

[0062] S5: Enter product information and test task process information of the product to be tested into the management server;

[0063] S6: Call the test program in the test equipment through the MES system to start the unattended environment screening test task;

[0064] S7: The management server sends control instructions to the environmental test equipment and the test equipment according to the established steps, and controls the test tasks to be executed step by step;

[0065] S8: The environmental test equipment receives the control command from the management server and sets and maintains the target temperature, humidity, and air pressure parameters;

[0066] S9: The test device receives the control instruction from the management server and performs operations such as starting the test, pausing the test, and terminating the test;

[0067] S10: The test equipment sends a cable switching instruction to the multi-channel automatic cable changing device according to the current test progress;

[0068] S11: The multi-channel automatic cable changing device receives a control instruction from the test equipment and switches the test cable to a designated output interface.

[0069] During the test process, the test device sends heartbeat messages to the management server at a fixed period. If the heartbeat message is not received or an incorrect heartbeat message is received for multiple consecutive times, both the test device and the management server will issue an error alarm message. The management server sends heartbeat messages to the environmental test equipment at a fixed period. If the heartbeat message is not received or an incorrect heartbeat message is received for multiple consecutive times, both the management server and the environmental test equipment will issue an error alarm message.

[0070] The workflow of the unattended environmental screening test system is as follows Fig.12 As shown. The operator calls up the unattended environmental screening test control program from the MES and automatically establishes an initial connection between the test equipment and the management server. The operator then uses a barcode scanner to obtain the custom number of each device and selects the environmental screening test task to be performed. Select "Start Test", and the unattended environmental screening test control program will send a start test command to the management server and upload the test task information. The management server will then identify the test task information uploaded by the test equipment, and if the identification is valid, it will send the test step details to the test equipment, which will be confirmed by the operator. The test equipment will wait for the management server to issue the "test" command, and control the multi-channel automatic line change device to test each product one by one, gradually completing the entire test task process.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0072] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. An unattended environmental screening test system, characterized in that: include: Environmental testing equipment is used to simulate the use environment of the tested product. Multiple tested products are placed in the environmental testing equipment. Multi-channel automatic cable changer, used to switch test cables to achieve simultaneous testing of multiple products under test; Test equipment, used to test the detailed performance parameters of the product under test; The management server is used to centrally manage the test equipment, environmental test equipment, tested products, test status, etc. in the production line, guide the test equipment and environmental test equipment to perform automated testing according to the preset test process, and record the operating status of each device and the process status of each test task, and store the test data in the database.

2. The unattended environmental screening test system according to claim 1, characterized in that: The management server, environmental test equipment, test equipment, and multi-channel automatic line changing device are all connected to the same local area network and interact using TCP or UDP communication methods.

3. The unattended environmental screening test system according to claim 1, characterized in that: The management server includes: Personnel authority management module, used to establish multi-level user access rights and data permissions; Equipment management and control module, to achieve the management and control of test equipment, environmental test equipment, and multi-channel automatic line change device; The comprehensive display module uses a Web interface to achieve human-computer interaction; it provides an overall display of the test equipment, environmental test equipment, test products, test processes, and operating status in the test, and can promptly issue corresponding warning reminders for abnormal situations; The test process management and control module realizes the management and control of the test task process, including the test step setting, environmental test equipment parameter setting, test start, test pause, test termination, and emergency stop functions; The database storage module stores information such as the test equipment status, environmental test equipment status, tested product status, and test task progress into the local database.

4. The unattended environmental screening test system according to claim 1, characterized in that: The test equipment includes all the hardware test resources, test interfaces, barcode scanners and computers required for product testing, where the computer is used to run the unattended environment screening test control program and the product performance index test program.

5. The unattended environmental screening test system according to claim 1, characterized in that: During the test process, the test equipment performs the functions of test resource initialization, equipment self-test, communication interaction, test information display, multi-channel automatic line changing device control, test status control monitoring, and product test program retrieval.

6. The unattended environmental screening test system according to claim 1, characterized in that: The multi-channel automatic line changing device includes an equipment frame, a panel assembly, a Z-axis module, an X-axis module, and an electrical control assembly; The panel assembly is fixedly connected to the equipment frame, and includes an input area connected to the test equipment and an output area connected to the product to be tested. The input area includes an input interface, and the output area includes multiple output interfaces for connecting multiple products to be tested. The input interface and the output interface are used to be electrically connected to the product test cable, and the input and output interfaces are electrically connected by cables through the Z-axis module; The Z-axis module includes a first driving electric cylinder and a probe assembly, the probe assembly includes a probe tail and a probe head, the probe tail is electrically connected to the input interface of the panel assembly using a cable, and the probe head is connected to each output interface in the output area of ​​the panel assembly by the first driving electric cylinder; The X-axis module includes a second driving electric cylinder, an auxiliary support and a mounting plate. The Z-axis module is fixed on the mounting plate. The mounting plate moves horizontally along the auxiliary support under the action of the second driving electric cylinder, so that the X-axis module carries the Z-axis module to move horizontally, and is electrically connected to multiple output interfaces one by one, so as to realize the testing of multiple products. The electrical control components include power interface, communication network port, internal 24V power supply, electric cylinder controller, power filter and industrial computer.

7. The unattended environmental screening test system according to claim 6, characterized in that: The interior of the equipment frame is built with aluminum profiles, and four universal casters with brakes are installed at the bottom.

8. A method for testing an unattended environmental screening test, characterized in that: The unattended environmental screening test system according to any one of claims 1 to 7 is used for implementation, comprising: S1: Connect the environmental test equipment, multi-channel automatic line change device, test equipment and management server to the local area network through the Lan network interface to establish a communication connection and realize data transmission; S2: electrically connecting the test interface of the test equipment to the input interface of the input area of ​​the multi-channel automatic line changing device through a test cable; S3: placing multiple products to be tested in an environmental test device; S4: Passing the same multiple test cables through the cable installation holes of the environmental test equipment and electrically connecting them to the output interfaces of the output area of ​​the multi-channel automatic cable changing device; S5: Enter product information and test task process information of the product to be tested into the management server; S6: Retrieve the test program in the test equipment through the MES system to start the unattended environment screening test task; S7: The management server sends control instructions to the environmental test equipment and the test equipment according to the established steps, and controls the test tasks to be executed step by step; S8: The environmental test equipment receives the control command from the management server and sets and maintains the target temperature, humidity, and air pressure parameters; S9: The test device receives the control instruction from the management server and starts, pauses, or terminates the test; S10: The test equipment sends a cable switching instruction to the multi-channel automatic cable changing device according to the current test progress; S11: The multi-channel automatic cable changing device receives a control instruction from the test equipment and switches the test cable to a designated output interface.

9. The unattended environment screening test method according to claim 8, characterized in that: During the test, the test device sends heartbeat messages to the management server at a fixed period. If the heartbeat message is not received or received incorrectly for multiple consecutive times, both the test device and the management server will send out an error alarm message. The management server sends heartbeat messages to the environmental test equipment at a fixed period. If the management server fails to receive or receives an erroneous heartbeat message for multiple consecutive times, both the management server and the environmental test equipment will send out an error alarm message.

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