Super multi-channel module cascade aging test device

Abstract

The utility model relates to the technical field of detection equipment, and discloses a super multichannel module cascade aging measurement device, which comprises a measurement device, the front side of the measurement device is fixedly provided with eight measurement and detection ports, every two of the eight measurement and detection ports form a group, and the four groups are uniformly distributed on the front side of the measurement device. A communication connecting wire is fixedly installed on the front side of the measuring device, a power switch located below the communication connecting wire is fixedly installed on the front side of the measuring device, and a signal acquisition card connected with the measuring detection port in an inserted mode is arranged in the measuring device. According to the utility model, through multi-level polling, the eight high-performance signal acquisition cards are connected in series to process acquired signals, so that the acquisition efficiency is greatly improved, the aging time cost is reduced, the influence of interference signals on signal transmission is isolated through fixed isolators on the signal acquisition cards, and the accuracy of information transmission is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and particularly relates to a super multi-channel module cascaded aging detection device. Background Technique

[0002] Aging test is an indispensable part in the manufacturing process of electronic products, and its purpose is to verify the reliability and performance stability of electronic products after long-term use. With the continuous development of manufacturing technology, electronic products are more and more widely used in various fields, and the requirements for the reliability and stability of chips are also getting higher and higher. Therefore, it becomes particularly important to evaluate the life, safety and environmental adaptability of electronic products through aging tests.

[0003] Traditional aging detection devices may have deficiencies in measurement accuracy and resolution, and are unable to accurately capture the subtle changes of chips during the aging process, which may lead to errors in test results and unable to accurately evaluate the life and performance stability of chips. Some traditional aging detection devices may have complex structures, and are difficult to operate and maintain, which requires operators to have a high level of professional knowledge and skills, increasing the cost of use and maintenance. And aging tests usually take a long time to carry out, with a low sampling rate. Especially for some complex environmental simulation conditions, it may take several weeks or even months. Traditional aging detection devices may have deficiencies in test efficiency, resulting in a long test cycle and affecting the progress of product R & D and production.

[0004] In addition, aging tests usually need to simulate various extreme environmental conditions, such as high temperature, low temperature, high humidity, etc., which requires a large amount of energy consumption. Traditional aging detection devices may not be optimized in terms of energy consumption, resulting in a high test cost. And traditional aging detection devices may not be able to fully simulate the complex environmental conditions in actual use, such as light, electromagnetic interference, etc. This limitation may lead to a deviation between the test results and the actual use situation, and unable to accurately reflect the performance of chips in actual applications. Therefore, a super multi-channel module cascaded aging detection device is proposed to solve the above problems. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a super multi-channel module cascaded aging detection device, which has the advantages of convenient operation, high measurement accuracy and anti-interference, and solves the problems that aging tests usually take a long time to carry out, with a low sampling rate, and are easily interfered, resulting in a deviation between the test results and the actual use situation.

[0007] (2) Technical Solutions

[0008] The technical solution of the present utility model to solve the above technical problems is as follows: A super multi-channel module cascading aging detection device, including a measuring device, on the front side of the measuring device, eight measuring and detecting ports are fixedly installed. The eight measuring and detecting ports are evenly distributed in four groups with two in each group on the front side of the measuring device. A communication wiring is fixedly installed on the front side of the measuring device, and a power switch located below the communication wiring is fixedly installed on the front side of the measuring device. Inside the measuring device, a signal acquisition card plugged with the measuring and detecting ports is provided. The number of the signal acquisition cards corresponds to the number of the measuring and detecting ports. An isolator, a related communication interface, a power plug, a power control chip, a central control chip, a multi-channel switch control chip, and an analog channel are connected to the signal acquisition card. The number of the multi-channel switch control chips is four and they are evenly distributed on the top of the signal acquisition card. The front side of the analog channel is plugged with the rear side of the measuring and detecting port.

[0009] As a preferred technical solution, the analog channel is connected to the multi-channel switch control chip. The multi-channel switch control chip is a CD4051 communication control chip, and the central control chip is an STM32 central control chip.

[0010] As a preferred technical solution, the path control function on the signal acquisition card is jointly controlled by four multi-channel switch control chips, and the final signal is transmitted to the central control chip.

[0011] As a preferred technical solution, the isolator converts and outputs the input signal on the signal acquisition card, and isolates the input, output, and working power from each other.

[0012] As a preferred technical solution, mounting holes are provided on the front side of the measuring device, and the measuring device is wrapped entirely by a steel shell.

[0013] As a preferred technical solution, a support assembly is provided inside the measuring device. The number of the support assemblies is four, corresponding to the positions of the four groups of signal acquisition cards respectively;

[0014] The support assembly includes a first support block, a second support block, and a connecting rod. The number of the first support blocks is four, and they are distributed in a rectangle at the bottom of the signal acquisition card in the same group. The bottom of the first support block is fixedly connected to the inner bottom wall of the measuring device. The number of the second support blocks is four, and their vertical positions correspond to those of the first support blocks. The second support blocks are movably installed between the two signal acquisition cards in the same group. The number of the connecting rods is four, and their bottoms all penetrate through the two signal acquisition cards in the same group and extend into the inside of the first support block. A nut whose bottom fits against the top of the upper signal acquisition card is threadedly connected to the outer side of the upper end of the connecting rod located above the upper signal acquisition card.

[0015] (3) Beneficial Effects

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. Through multi-level polling, the present utility model processes the collected signals through the series connection of multiple modules of eight high-performance signal acquisition cards, greatly improving the acquisition efficiency and reducing the cost of aging measurement time.

[0018] 2. The present utility model isolates the influence of interference signals on signal transmission through the fixed isolators on the signal acquisition cards, ensuring the accuracy of the transmitted information.

[0019] 3. By externalizing the communication wiring, the present utility model greatly extends the transmission distance of communication signals.

[0020] 4. The external steel shell of the present utility model retains openings, which helps the fixing device maintain the stability and efficiency of signal detection and can ensure the safety of the device.

[0021] 5. The present utility model controls signal transmission through a high-performance central processing chip and multiple path control chips, improving the transmission accuracy and speed. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the internal structure of the measurement device of the present utility model;

[0024] Figure 2 It is a schematic diagram of the external three-dimensional structure of the measurement device of the present utility model;

[0025] Figure 3 It is a schematic diagram of the external three-dimensional structure of the measurement device from another perspective of the present utility model;

[0026] Figure 4 It is a schematic diagram of the connection between the support component and the signal acquisition cards in the same group of the present utility model;

[0027] Figure 5 It is a working flow chart of the present utility model;

[0028] Figure 6 It is a principle block diagram of the present utility model.

[0029] In the figure: 1. Measuring device; 2. Measuring and detecting port; 3. Communication wiring; 4. Power switch; 5. Signal acquisition card; 6. Isolator; 7. Related communication interface; 8. Power plug; 9. Power control chip; 10. Central control chip; 11. Multiplexer control chip; 12. Analog channel; 13. Mounting hole; 14. Support assembly; 1401. First support block; 1402. Second support block; 1403. Connecting rod; 1404. Nut. Detailed implementation

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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.

[0031] In the embodiment, it is given by Figures 1-4 A super multi-channel module cascading aging measurement device. The present invention includes a measuring device 1. There are eight measuring and detecting ports 2 fixedly installed on the front side of the measuring device 1. The eight measuring and detecting ports 2 are evenly distributed in four groups in pairs on the front side of the measuring device 1. A communication wiring 3 is fixedly installed on the front side of the measuring device 1. A power switch 4 is fixedly installed on the front side of the measuring device 1 and is located below the communication wiring 3. A signal acquisition card 5 inserted with the measuring and detecting ports 2 is arranged inside the measuring device 1. The number of signal acquisition cards 5 corresponds to the number of measuring and detecting ports 2. An isolator 6, a related communication interface 7, a power plug 8, a power control chip 9, a central control chip 10, a multiplexer control chip 11 and an analog channel 12 are connected to the signal acquisition card 5. The number of multiplexer control chips 11 is four and they are evenly distributed on the top of the signal acquisition card 5. The front side of the analog channel 12 is inserted with the rear side of the measuring and detecting port 2.

[0032] The related communication interface 7 is connected to the communication wiring 3 through a wire. The power control chip 9 is a 5V power control chip. The analog channel 12 converts digital signals into analog signals for input.

[0033] As a preference of this embodiment, the analog channel 12 is connected to the multiplexer control chip 11. The multiplexer control chip 11 is a CD4051 communication control chip. The central control chip 10 is a STM32 central control chip.

[0034] The STM32 central control chip selects a 48-pin STM32F103 chip.

[0035] Preferably, in this embodiment, the path control function on the signal acquisition card 5 is jointly controlled by four multiplexer control chips 11, and the final signal is transmitted to the central control chip 10.

[0036] The multiplexer control chip 11 converts the address input signal from the logic level conversion circuit into a corresponding switch unit selection signal, and connects the corresponding switch unit. The central control chip 10 is the core component on the signal acquisition card 5. It sends commands to transfer data, completes operations, and processes tasks. Under the control provided by the central control chip 10, the received signal is converted and processed by the relevant chips on the signal acquisition card 5, and finally, signal transmission is carried out with the host computer via the fixed communication wiring 3 on the measuring device 1.

[0037] Preferably, in this embodiment, the isolator 6 converts and outputs the input signal on the signal acquisition card 5, and isolates the input, output, and working power supply from each other.

[0038] Preferably, in this embodiment, an installation hole 13 is provided on the front side of the measuring device 1, and the measuring device 1 is entirely wrapped by a steel shell.

[0039] Preferably, in this embodiment, a support assembly 14 is provided inside the measuring device 1. The number of support assemblies 14 is four, corresponding to the positions of four groups of signal acquisition cards 5 respectively;

[0040] The support assembly 14 includes a first support block 1401, a second support block 1402, and a connecting rod 1403. The number of first support blocks 1401 is four, distributed in a rectangle at the bottom of the signal acquisition card 5 in the same group. The bottom of the first support block 1401 is fixedly connected to the bottom of the inner wall of the measuring device 1. The number of second support blocks 1402 is four, and the vertical position corresponds to that of the first support block 1401. The second support block 1402 is movably installed between two signal acquisition cards 5 in the same group. The number of connecting rods 1403 is four, and the bottom of each passes through two signal acquisition cards 5 in the same group and extends into the interior of the first support block 1401. A nut 1404 whose bottom fits against the top of the upper signal acquisition card 5 is threadedly connected to the outer side of the upper end of the connecting rod 1403 located above the upper signal acquisition card 5.

[0041] Provide the required support for the signal acquisition card 5 to make it more stable during subsequent use.

[0042] Please refer to Figure 5 , receive the input signal through the analog channel 12, after primary processing, hand it over to the MCU for acquisition and analysis, then output through the relevant communication interface 7, and can communicate with the host computer through an external communication connection line.

[0043] Please refer to Figure 6, the signal acquisition card 5 mainly consists of a power supply, an isolation circuit, an A / D conversion circuit, a digital input circuit, a digital output circuit, an isolated communication interface, and an MCU, etc. The microcontroller uses a 32-bit ARM chip with strong data processing capabilities, and a watchdog circuit is adopted, which can restart the system in case of an accident, making the system more stable and reliable. It can be applied in high-performance and high-speed application environments. Optoelectronic isolation is adopted between the input / output unit and the control unit, and filtering measures are taken for the input signals, greatly reducing the influence of industrial site interference on the operation of the acquisition card, making the module highly reliable. An isolated communication interface is adopted, which can avoid the influence of industrial site signals on the communication interface of the controller and has ESD, overvoltage, and overcurrent protection.

[0044] Working principle: The conditioning circuit basically consists of a smoothing filter, a gain adjustment circuit, safety protection, and an A / D conversion circuit. The smoothing filter filters the input signal. The gain adjustment circuit adjusts the signal to a more appropriate voltage according to the amplitude of the input signal. The safety protection is mainly overvoltage and overcurrent protection, which improves the safety of the acquisition card and the dynamic range of the system for signal measurement. The ADC completes the final measurement of the signal. After the measurement is completed, the signal is transmitted to the central processing chip STM32F103 for further analysis and processing, and finally output through the communication interface. The communication interface uses RS-485 and the underlying driver of WinCE. Its interface level is low and it is not easy to damage the chip; it has a high transmission rate, a long transmission distance; strong anti-interference ability and supports multiple nodes, and it is a two-way, half-duplex communication protocol.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A super multi-channel module cascaded aging test device, comprising a measuring device (1), characterized in that: There are eight measurement detection ports (2) fixedly installed on the front side of the measurement device (1). The eight measurement detection ports (2) are evenly distributed in four groups in pairs on the front side of the measurement device (1). A communication wiring (3) is fixedly installed on the front side of the measurement device (1). A power switch (4) is fixedly installed on the front side of the measurement device (1) and is located below the communication wiring (3). A signal acquisition card (5) inserted with the measurement detection port (2) is arranged inside the measurement device (1). The number of the signal acquisition cards (5) corresponds to the number of the measurement detection ports (2). An isolator (6), a relevant communication interface (7), a power plug (8), a power control chip (9), a central control chip (10), a multiplexer control chip (11), and an analog channel (12) are connected to the signal acquisition card (5). The number of the multiplexer control chips (11) is four and they are evenly distributed on the top of the signal acquisition card (5). The front side of the analog channel (12) is inserted with the rear side of the measurement detection port (2).

2. The super multi-channel module cascade aging test device according to claim 1, characterized in that: The analog channel (12) is connected to the multiplexer control chip (11). The multiplexer control chip (11) is a CD4051 communication control chip. The central control chip (10) is an STM32 central control chip.

3. The multi-channel module cascade aging measurement device according to claim 1, characterized in that: The path control function on the signal acquisition card (5) is jointly controlled by four multiplexer control chips (11), and the final signal is transmitted to the central control chip (10).

4. A super multi-channel module cascaded aging test device according to claim 1, characterized in that: The isolator (6) converts and outputs the input signal on the signal acquisition card (5), and isolates the input, output, and working power from each other.

5. The multi-channel module cascaded aging testing device according to claim 1, characterized in that: An installation hole (13) is opened on the front side of the measurement device (1). The measurement device (1) is entirely wrapped by a steel shell.

6. The ultra-multi-channel module cascading aging measurement device according to claim 1, characterized in that: A support assembly (14) is arranged inside the measurement device (1). The number of the support assemblies (14) is four and they respectively correspond to the positions of the four groups of signal acquisition cards (5). The support assembly (14) includes a first support block (1401), a second support block (1402), and a connecting rod (1403). The number of the first support blocks (1401) is four and they are distributed in a rectangle at the bottom of the signal acquisition card (5) in the same group. The bottom of the first support block (1401) is fixedly connected to the bottom of the inner wall of the measurement device (1). The number of the second support blocks (1402) is four and their vertical positions correspond to the positions of the first support blocks (1401). The second support blocks (1402) are movably installed between the two signal acquisition cards (5) in the same group. The number of the connecting rods (1403) is four and their bottoms all penetrate through the two signal acquisition cards (5) in the same group and extend into the inside of the first support block (1401). A nut (1404) whose bottom fits against the top of the upper signal acquisition card (5) is threadedly connected to the outside of one end of the connecting rod (1403) located above the upper signal acquisition card (5).

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