Test system for high and low temperature reliability aging test

Abstract

The utility model relates to the field of equipment testing, in particular to a testing system for high and low temperature reliability aging testing. According to the utility model, an incubator, a vibration table, PC control and system test in the existing detection scheme are integrated into a set of system, temperature control is realized through a Python frame, vibration test, high and low temperature test, system function test and long-time reliability test corresponding to equipment are carried out, and real-time monitoring is carried out through a camera, so that the detection efficiency is improved. According to the utility model, the performance transparency and visualization of the equipment in the whole high and low temperature process are ensured, the real working environment of the locomotive equipment can be simulated by adjusting the parameters of high and low temperature, vibration and the like, the authenticity and credibility of test data are enhanced, and the test time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the field of equipment testing, in particular to a testing system for high and low temperature reliability aging testing. Background Technique

[0002] High and low temperature testing and reliability aging testing are currently testing methods used to evaluate the performance and reliability of materials and products in extreme temperature environments. Currently, in the field of embedded device testing in complex working environments such as vehicles, advertising machines, all-in-ones, boards, gateways, switches, etc., high and low temperature testing is achieved by setting the temperature using a temperature chamber, and reliability aging testing is implemented using separate reliability tools. It is necessary to manually set the high and low temperature limit operating temperatures, and then manually run some reliability tools or scripts, which is very labor-intensive. Moreover, it takes a lot of time and the accuracy is insufficient to judge the test results manually. And most of the existing high and low temperature reliability test chambers and reliability test tools are separate. It is necessary to manually set the corresponding temperature of the temperature chamber, and then manually perform some operations or commands to verify the performance of the system under the high and low temperature limit operating temperatures, including: functions, performance, and reliability. This part is very time-consuming, and the judgment criteria are not unified, and the test process cannot be accurately monitored during the process.

[0003] Therefore, there is a need for a testing system with higher integration that can perform multiple tests simultaneously and whose process can be monitored. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the problems in the prior art that the testing tools are relatively scattered and the test process cannot be accurately monitored, and to provide a testing system for high and low temperature reliability aging testing.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A testing system for high and low temperature reliability aging testing, the testing system includes a monitoring unit, a control unit, a vibration unit, and a temperature control unit arranged in a test site;

[0007] The monitoring unit is communicatively connected to the control unit, and is used to obtain the temperature information and video monitoring information of the device to be tested in the test site, and send them to the control unit;

[0008] The control unit is used to send control instructions to the vibration unit and the temperature control unit, send operation instructions to the device to be tested, and display the temperature information and video monitoring information of the device to be tested fed back by the monitoring unit;

[0009] The vibration unit is used to apply a vibration effect with a corresponding amplitude and frequency to the test site according to the control instructions of the control unit;

[0010] The temperature control unit is used to apply a temperature effect with a corresponding temperature and heating time to the test site according to the control instruction of the control unit.

[0011] As a preferred solution of the present utility model, the monitoring unit includes a plurality of temperature sensors and a plurality of cameras;

[0012] The temperature sensors are installed on the device to be tested through thermal conductive glue;

[0013] The cameras are installed beside the device to be tested in the test site, and are used to monitor the screen working state of the device to be tested.

[0014] As a preferred solution of the present utility model, the screen working state includes normal, color distortion, screen flashing and black screen.

[0015] As a preferred solution of the present utility model, the control unit includes a touch screen and an industrial personal computer;

[0016] The touch screen is used to input control instructions and operation instructions;

[0017] The industrial personal computer is used to send corresponding control instructions to the vibration unit and the temperature control unit according to the input control instructions, and send corresponding operation instructions to the device to be tested according to the input operation instructions.

[0018] As a preferred solution of the present utility model, the operation instructions include power on / off, video playback, camera shooting, WiFi throughput, CPU and memory occupancy display, data transmission.

[0019] As a preferred solution of the present utility model, the industrial personal computer is communicatively connected to the device to be tested, and is used to receive the WiFi throughput data, CPU and memory occupancy information, and data transmission information fed back by the device to be tested.

[0020] As a preferred solution of the present utility model, the vibration unit includes a vibration table and a motor;

[0021] The vibration table is arranged below the device to be tested;

[0022] The motor is arranged on the vibration table, and is used to apply a vibration effect with a corresponding amplitude and frequency according to the control instruction of the control unit.

[0023] As a preferred solution of the present utility model, the temperature control unit is a TCU temperature control unit.

[0024] As a preferred solution of the present utility model, it further includes a multi-platform control unit, which is communicatively connected to the control unit and is used to remotely send control instructions and / or operation instructions to the control unit.

[0025] As a preferred solution of the present utility model, the multi-platform control unit includes at least two identical or different control units;

[0026] The control unit is at least one of a PC terminal and a mobile terminal.

[0027] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0028] The present utility model integrates the incubator, vibration table, PC control, and system test in the existing detection solution into a set of systems. While realizing temperature control through the Python framework, it conducts vibration tests, high and low temperature tests, system function tests, and long-term reliability tests corresponding to the equipment, and real-time monitoring through a camera to ensure the transparency and visualization of the equipment performance during the entire high and low temperature process. At the same time, the present utility model can simulate the real working environment of locomotive equipment by adjusting parameters such as high and low temperature and vibration, enhance the authenticity and credibility of test data, and greatly shorten the test time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a test system for high and low temperature reliability aging test according to Embodiment 1 of the present utility model;

[0030] Figure 2 It is a schematic structural diagram of a test system for high and low temperature reliability aging test according to Embodiment 2 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present utility model will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present utility model is limited to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0032] Embodiment 1

[0033] A test system for high and low temperature reliability aging test, the test system includes a monitoring unit, a control unit, a vibration unit, and a temperature control unit arranged in a test site.

[0034] The monitoring unit is communicatively connected to the control unit and is used to obtain the temperature information and video monitoring information of the device to be tested in the test site and send them to the control unit.

[0035] Specifically, the monitoring unit includes a plurality of temperature sensors and a plurality of cameras;

[0036] The temperature sensor is installed on the device to be tested through thermal conductive adhesive;

[0037] The camera is installed beside the device to be tested in the test site for monitoring the screen working state of the device to be tested. The screen working state includes normal, screen distortion, screen flashing and black screen. The utility model monitors the real-time performance of the test device through an external camera to check whether abnormalities such as screen flashing, screen distortion and black screen occur, making the whole test process more visual. It avoids misjudgment or missed judgment during the test process.

[0038] The control unit is used to send control instructions to the vibration unit and the temperature control unit, send operation instructions to the device to be tested, and display the temperature information and video monitoring information of the device to be tested fed back by the monitoring unit.

[0039] Specifically, the control unit includes a touch screen and an industrial computer;

[0040] The touch screen is used to input control instructions and operation instructions; The utility model is controlled through a graphical interface, greatly reducing the learning cost of operators, making it easier to operate. Parameters such as temperature, vibration, CPU, and memory can be configured parametrically, making the whole test more accurate and controllable. For some low-probability occasional problems occurring during the test process, the probability of low-probability reproduction can be greatly increased through the one-key parameter export function. Testers can set temperature, vibration, and performance parameters through the touch screen; Further, the control unit can also pre-store fixed parameter settings, denoted as vehicle-mounted mode, extreme mode, custom mode, etc.

[0041] The industrial computer is used to send corresponding control instructions to the vibration unit and the temperature control unit according to the input control instructions, and send corresponding operation instructions to the device to be tested according to the input operation instructions.

[0042] The operation instructions include power on / off, video playback, camera photographing, WiFi throughput, CPU and memory occupancy display, data transmission (such as transmission methods of RS232, RS485, CAN, UART, etc.).

[0043] The industrial control computer is communicatively connected to the device to be tested, and is used to receive the WiFi throughput data, CPU and memory occupancy information, and data transmission information (or obtain data such as CPU, memory, and main frequency through real-time log capture) fed back by the device to be tested. At the same time, testers can also draw temperature-performance curves and corresponding CPU, memory performance, throughput, RS232, and RS485 visualization curve test reports based on the collected temperature and performance data during the monitoring and testing process, so as to facilitate the testers to analyze and summarize the entire test.

[0044] Furthermore, testers can simply obtain the following preliminary data analysis based on the above data:

[0045] 1. By playing a fixed audio-visual source (with a fixed picture, obvious distinction between high-frequency and low-frequency audio data), comparing the photos taken by the camera with the original source, and determining whether there are abnormalities during the playback based on the similarity of the photos (if the similarity is above 90%, it is determined to pass);

[0046] 2. By playing a fixed audio-visual source, recording the corresponding audio data with a Mic, comparing the audio curves of the original source, and determining whether there are abnormalities during the playback based on the similarity (if the similarity is above 90%, it is determined to pass);

[0047] 3. By using a temperature sensor to monitor in real time whether there are abnormalities in the deviation between the current temperature on the surface of the device and the expected temperature (the temperature set by the temperature control unit) (if the deviation between the set temperature and the actual temperature is within 10%, it is determined to pass). Through real-time temperature data, vibration data, and performance (CPU, memory, main frequency) parameters, the temperature, performance, and vibration curves during the actual use of the device (locomotive) can be simulated, which can more effectively discover some BUGs during the actual process of the device (locomotive), such as abnormal temperature (abnormal heat dissipation), abnormal vibration (structural design problems), and memory leakage (overflow - software problems), expose problems as early as possible, and greatly reduce the defect repair cost caused by defects during actual use.

[0048] The utility model controls the temperature change, vibration, and corresponding basic function tests such as CPU, memory, throughput, playback, display, camera, RS232, and RS485 in the test site with one key through a set of systems, making the entire test process more convenient, faster, and greatly improving the efficiency. Preliminary statistics show that the entire reliability test cycle can be shortened from the previous 15 days to about 10 days, and the overall test cycle is shortened by more than 30%.

[0049] The vibration unit is used to apply vibration effects with corresponding amplitudes and frequencies to the test site according to the control instructions of the control unit.

[0050] The vibration unit includes a vibration table and a motor;

[0051] The shaking table is arranged below the device to be tested;

[0052] The motor is arranged on the shaking table and is used to apply a vibration effect with corresponding amplitude and frequency according to the control instruction of the control unit.

[0053] The temperature control unit is used to apply a temperature effect with corresponding temperature and heating time to the test site according to the control instruction of the control unit.

[0054] The temperature control unit is a TCU temperature control unit (the temperature control range of this module is -120°C to +400°C, and the temperature control accuracy is ±0.1°C).

[0055] Embodiment 2

[0056] As Figure 2 shown, the difference between this embodiment and Embodiment 1 is that the test system further includes a multi-platform control unit, and the multi-platform control unit is communicatively connected to the control unit and is used to remotely send control instructions and / or operation instructions to the control unit.

[0057] The multi-platform control unit includes at least two identical or different control units;

[0058] The control unit is at least one of a PC terminal and a mobile terminal (such as a mobile phone, a tablet computer, and other portable mobile devices).

[0059] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A test system for high and low temperature reliability aging test, characterized in that, The test system includes a monitoring unit, a control unit, a vibration unit, and a temperature control unit arranged in a test site; The monitoring unit is communicatively connected to the control unit and is used to obtain the temperature information and video monitoring information of the device to be tested in the test site and send them to the control unit; The control unit is used to send control instructions to the vibration unit and the temperature control unit, send operation instructions to the device to be tested, and display the temperature information and video monitoring information of the device to be tested fed back by the monitoring unit; The vibration unit is used to apply vibration effects with corresponding amplitudes and frequencies to the test site according to the control instructions of the control unit; The temperature control unit is used to apply temperature effects with corresponding temperatures and heating times to the test site according to the control instructions of the control unit.

2. The test system for high and low temperature reliability aging test according to claim 1, characterized in that, The monitoring unit includes a plurality of temperature sensors and a plurality of cameras; The temperature sensors are installed on the device to be tested through thermal conductive glue; The cameras are installed beside the device to be tested in the test site and are used to monitor the screen working state of the device to be tested.

3. The test system for high and low temperature reliability aging test according to claim 2, characterized in that, The screen working state includes normal, screen distortion, screen flashing, and black screen.

4. The test system for high and low temperature reliability aging test according to claim 1, characterized in that, The control unit includes a touch screen and an industrial computer; The touch screen is used to input control instructions and operation instructions; The industrial computer is used to send corresponding control instructions to the vibration unit and the temperature control unit according to the input control instructions, and send corresponding operation instructions to the device to be tested according to the input operation instructions.

5. The test system for high and low temperature reliability aging test according to claim 4, characterized in that, The operation instructions include power on / off, video playback, camera shooting, WiFi throughput, CPU and memory occupancy display, and data transmission.

6. The test system for high and low temperature reliability aging test according to claim 5, characterized in that, The industrial computer is communicatively connected to the device to be tested and is used to receive the WiFi throughput data, CPU and memory occupancy information, and data transmission information fed back by the device to be tested.

7. The test system for high and low temperature reliability aging test according to claim 1, characterized in that, The vibration unit includes a vibration table and a motor; The vibration table is arranged below the device to be tested; The motor is arranged on the vibration table and is used to apply vibration effects with corresponding amplitudes and frequencies according to the control instructions of the control unit.

8. The test system for high and low temperature reliability aging test according to claim 1, characterized in that, The temperature control unit is a TCU temperature control unit.

9. The test system for high and low temperature reliability aging test according to claim 1, characterized in that, It further includes a multi-platform control unit which is communicatively connected to the control unit and is used to remotely send control instructions and / or operation instructions to the control unit.

10. The test system for high and low temperature reliability aging test according to claim 9, characterized in that, The multi-platform control unit includes at least two identical or different control units; The control unit is at least one of a PC terminal and a mobile terminal.

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