FCT test equipment
Through the combination of industrial control machine, DSP acquisition board, adapter and test point board, parallel signal acquisition and output of the circuit board is realized, solving the problems of high cost and low efficiency of existing equipment, and achieving efficient and low-cost circuit board testing.
Patent Information
- Application Number
- CN202421238126.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Existing FCT testing equipment relies on oscilloscopes, multimeters, relay switching boards and other instruments, resulting in high cost and low testing efficiency.
The combination of industrial control machine, DSP acquisition board, adapter and test point pin board is adopted to realize parallel acquisition of digital signals and analog signals of the circuit board to be tested and parallel output of PWM waves and reference voltages, avoiding the use of oscilloscopes, multimeters, relay switching boards, etc.
It reduces the cost of testing equipment, improves testing efficiency, shortens sampling time, and improves the testing efficiency of the test circuit board.
Smart Images
Figure CN223092082U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of functional testing, and particularly to an FCT testing device. Background Art
[0002] Functional Circuit Test (FCT) generally specifically refers to the test of the function of each circuit on a Printed Circuit Board Assembly (PCBA), checking whether its function meets the specifications and open / short circuit conditions, and accurately indicating defective parts and the causes of defects. Therefore, after the circuit board plug-in welding is completed, performing the functional test first can timely test interface input / output, test power supply voltage and power, test open / short circuit traces, simulate various signal control circuit boards, detect whether the circuit board function is normal, perform dynamic function detection, and perform automatic detection to ensure production problems such as product quality.
[0003] The FCT testing device is designed based on an open hardware and software architecture, and can flexibly expand the hardware and establish test programs. However, in related technologies, most FCT testing devices rely on oscilloscopes, multimeters, relay switching boards, etc. to serially collect various feedback signals of the circuit board to be tested. Among them, the relay switching board is used to implement the acquisition switching in the serial acquisition process (that is, by toggling different relays on the switching board to achieve the serial acquisition of different feedback signals), and to output the corresponding signals required for the serial output function test of the circuit board to be tested by means of a signal generator, low-voltage source, etc. The addition of instruments such as oscilloscopes, multimeters, relay switching boards, and signal generators results in high costs for the FCT testing device and low testing efficiency for the circuit board to be tested. Summary of the Utility Model
[0004] Based on this, it is necessary to provide an FCT testing device for the above technical problems.
[0005] This application provides an FCT testing device, which includes an industrial control computer, a DSP acquisition board, a first adapter, a second adapter, and a test point needle board;
[0006] The industrial control computer is connected to the DSP acquisition board; the DSP acquisition board is connected to the first adapter, the first adapter is connected to the second adapter, and the second adapter is connected to the test point needle board. Among them, the test point needle board is used to adapt to and connect the circuit board to be tested, and the DSP acquisition board is used to parallel-collect the digital signals and analog signals output by the circuit board to be tested successively through the test point needle board, the second adapter, and the first adapter, and to parallel-output PWM waves and reference voltages to the circuit board to be tested successively through the first adapter, the second adapter, and the test point needle board.
[0007] In this embodiment, the FCT test equipment can achieve parallel acquisition of digital signals and analog signals of the circuit board under test through the DSP acquisition board, and parallel output of PWM waves and reference voltages to the circuit board under test. Therefore, there is no need to add an oscilloscope, a multimeter, a relay switching board, etc. to serially collect various feedback signals of the circuit board under test, nor is it necessary to add a signal generator, a low-voltage source, etc. to serially output the corresponding signals required for the function test of the circuit board under test, thereby reducing the cost of the FCT test equipment and improving the test efficiency of the circuit board under test.
[0008] In one of the embodiments, the DSP acquisition board includes:
[0009] A PWM capture circuit, including a plurality of first I / O interfaces, the first I / O interfaces are connected to the first adapter, and the PWM capture circuit is used to collect the digital signals;
[0010] An ADC sampling circuit, including a plurality of second I / O interfaces, the second I / O interfaces are connected to the first adapter, and the ADC sampling circuit is used to collect the analog signals;
[0011] A PWM output circuit, including a plurality of third I / O interfaces, the third I / O interfaces are connected to the first adapter, and the PWM output circuit is used to output the PWM waves;
[0012] A reference voltage circuit, including a plurality of fourth I / O interfaces, the fourth I / O interfaces are connected to the first adapter, and the reference voltage circuit is used to output the reference voltage.
[0013] In one of the embodiments, the DSP acquisition board includes a plurality of the PWM capture circuits and a plurality of the PWM output circuits, wherein the types of the digital signals collected by at least two of the PWM capture circuits are different, and the types of the PWM waves output by at least two of the PWM output circuits are different.
[0014] In one of the embodiments, the DSP acquisition board further includes: a sensor circuit, including a plurality of fifth I / O interfaces, the fifth I / O interfaces are connected to the first adapter, and the sensor circuit is used to sequentially output single-sided half-byte signals to the circuit board under test through the first adapter, the second adapter and the test point pin board.
[0015] In one of the embodiments, the DSP acquisition board further includes: a plurality of reserved I / O interfaces, the reserved I / O interfaces are connected to the first adapter.
[0016] In one embodiment, the FCT test device further includes: a terminal, which is connected to the industrial control computer through a first communication interface, and the industrial control computer is connected to the DSP acquisition board through a second communication interface. Among them, the terminal communicates with the DSP acquisition board through the first communication interface, the industrial control computer, and the second communication interface in sequence.
[0017] In one embodiment, both the first communication interface and the second communication interface are RS232 interfaces.
[0018] In one embodiment, one of the first adapter and the second adapter is a male DB plug, and the other of the first adapter and the second adapter is a female DB plug.
[0019] In one embodiment, the FCT test device further includes: a power supply circuit, which is used to connect to the circuit board under test and provide an appropriate power signal to the circuit board under test.
[0020] In one embodiment, the test point needle board includes a plurality of test needles, and the plurality of test needles are used to adapt to and connect a plurality of test points of the circuit board under test. Among them, the first end of each test needle is connected to the corresponding test point, and the second end of each test needle is connected to the second adapter.
[0021] The above FCT test device includes an industrial control computer, a DSP acquisition board, a first adapter, a second adapter, and a test point needle board. Among them, the industrial control computer can be respectively connected to the terminal and the DSP acquisition board; the DSP acquisition board, the first adapter, the second adapter, and the test point needle board are connected in sequence. The test point needle board is used to adapt to and connect the circuit board under test. The DSP acquisition board is used to parallel-collect the digital signals and analog signals output by the circuit board under test in sequence through the test point needle board, the second adapter, and the first adapter, and is used to parallel-output PWM waves and reference voltages to the circuit board under test in sequence through the first adapter, the second adapter, and the test point needle board; thus, the FCT test device provided by the embodiment of the present application can realize the parallel collection of the digital signals and analog signals of the circuit board under test and the parallel output of PWM waves and reference voltages to the circuit board under test through the DSP acquisition board, so that there is no need to add an oscilloscope, a multimeter, a relay switching board, etc. to serially collect various feedback signals of the circuit board under test, nor is it necessary to add a signal generator, a low-voltage source, etc. to serially output the corresponding signals required for the function test of the circuit board under test, thereby reducing the cost of the FCT test device and improving the test efficiency of the circuit board under test. Description of the Drawings
[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 One of the structural schematic diagrams of the FCT test device provided by the embodiment of the present application;
[0024] Figure 2 Another structural schematic diagram of the FCT test device provided by the embodiment of the present application;
[0025] Figure 3 Another structural schematic diagram of the FCT test device provided by the embodiment of the present application;
[0026] Figure 4 Another structural schematic diagram of the FCT test device provided by the embodiment of the present application;
[0027] Figure 5 Another structural schematic diagram of the FCT test device provided by the embodiment of the present application. Detailed implementation manners
[0028] In order to make the purpose, technical solutions and advantages of the present application more clear and understandable, the following further details the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0029] The FCT test device provided by the embodiment of the present application is applicable to the circuit boards to be tested, including but not limited to the main boards of electric control products, the drive boards of electric control products, the main boards of power products, and the drive boards of power products.
[0030] In an exemplary embodiment, referring to Figure 1 , a kind of FCT test device is provided. The FCT test device includes an industrial control computer 110, a DSP acquisition board 120, a first adapter 130, a second adapter 140 and a test point pin board 150.
[0031] Among them, the industrial control computer 110 is connected to the DSP (Digital Signal Processing) acquisition board 120. The industrial control computer 110 can play the role of transmitting instructions and signals. For example, the industrial control computer 110 can transmit the instructions sent by the PC to the DSP acquisition board 120, and the DSP acquisition board 120 works according to the received instructions. The industrial control computer 110 can also transmit the signals collected by the DSP acquisition board 120 to the PC (Personal Computer).
[0032] The DSP acquisition board 120 has multiple I / O interfaces. It can be that multiple I / O interfaces of the DSP acquisition board 120 are all connected to the first adapter 130. The second adapter 140 is respectively connected to the first adapter 130 and the test point pin board 150. The test point pin board 150 is used to adapt and connect to the circuit board under test. Different test point pin boards 150 can be used to adapt and connect to different circuit boards under test. Different test point pin boards 150 can be customized for different circuit boards under test. Among them, different circuit boards under test can be understood as having different numbers and / or distribution positions of test points on the circuit board under test. The multiple I / O interfaces of the DSP acquisition board 120 can work in parallel. Therefore, the DSP acquisition board 120 can collect digital signals and analog signals output by the circuit board under test passing through the test point pin board 150, the second adapter 140, and the first adapter 130 in parallel, and can inject PWM (Pulse Width Modulation) waves and output reference voltages to the circuit board under test in parallel through the first adapter 130, the second adapter 140, and the test point pin board 150 in sequence. Among them, the digital signal is, for example, a PWM wave, and the analog signal is, for example, voltage and current.
[0033] In this embodiment, the FCT test device can collect both digital signals and analog signals output by the circuit board under test in parallel through the DSP acquisition board 120, and can also inject PWM waves into the circuit board under test in parallel and output a reference voltage. The signal acquisition, PWM wave injection, and reference voltage output of the circuit board under test can all be realized in parallel, that is, the reception of various signals of the circuit board under test and the output of various signals of the circuit board under test can all be realized in parallel. Therefore, there is no need to use the serial acquisition method of toggling different relays on the switching board to collect different feedback signals. In this way, the test efficiency of the circuit board under test is greatly improved. Usually, in the serial acquisition method in the related art, the single sampling time can be as long as 3s to 4s, while the parallel sampling time of all test points of the circuit board under test by the FCT test device in this embodiment only needs to be in the order of us to ms, generally not exceeding 10ms. At the same time, because the DSP acquisition board 120 can completely cover the acquisition of various signals of the circuit board under test, the injection of various PWM waves, and the output of various reference voltages based on multiple I / O interfaces, the FCT test device does not need to add an oscilloscope, a multimeter, a relay switching board, etc. to serially collect various feedback signals of the circuit board under test, nor does it need to add a signal generator, a low-voltage source, etc. to output the corresponding signals required for the serial output function test of the circuit board under test. In this way, the cost of the FCT test device is greatly reduced.
[0034] In an exemplary embodiment, referring to Figure 2 , the DSP acquisition board 120 includes a PWM capture circuit 121, an ADC sampling circuit 122, a PWM output circuit 123, and a reference voltage circuit 124.
[0035] The PWM capture circuit 121 includes a plurality of first I / O interfaces, and the plurality of first I / O interfaces are respectively connected to a first adapter 130. The PWM capture circuit 121 is used to collect digital signals output by the circuit board under test. That is, the DSP acquisition board 120 can collect digital signals output by each test point of the circuit board under test in parallel through the plurality of first I / O interfaces.
[0036] The ADC sampling circuit 122 includes a plurality of second I / O interfaces, and the plurality of second I / O interfaces are respectively connected to the first adapter 130. The ADC sampling circuit 122 is used to collect analog signals output by the circuit board under test. That is, the DSP acquisition board 120 can collect analog signals output by each test point of the circuit board under test in parallel through the plurality of second I / O interfaces.
[0037] The PWM output circuit 123 includes multiple third I / O interfaces, and the multiple third I / O interfaces are respectively connected to the first adapter 130. The PWM output circuit 123 is used to output PWM waves to the circuit board under test. That is, the DSP acquisition board 120 can inject PWM waves into each test point of the circuit board under test in parallel through the multiple third I / O interfaces. When it is necessary to test the PWM wave output function of the circuit board under test, the DSP acquisition board 120 directly injects PWM waves into the circuit board under test, without the circuit board under test generating PWM waves according to the instructions sent by the PC. In this way, the sampling time of the circuit board under test can be further shortened, thereby further improving the test efficiency of the test circuit board.
[0038] The reference voltage circuit 124 includes multiple fourth I / O interfaces, and the multiple fourth I / O interfaces are respectively connected to the first adapter 130. The reference voltage circuit 124 is used to output a reference voltage to the circuit board under test. That is, the DSP acquisition board 120 can output various reference voltages to each test point of the circuit board under test in parallel through the multiple fourth I / O interfaces to ensure the normal progress of the function test.
[0039] In this embodiment, the PC sends instructions to the DSP acquisition board 120 through the industrial control computer 110. The DSP acquisition board 120 can both collect digital signals and analog signals output by the circuit board under test in parallel through multiple first I / O interfaces, multiple second I / O interfaces, multiple third I / O interfaces and multiple fourth I / O interfaces, and can also inject PWM waves into the circuit board under test in parallel and output reference voltages. The signal acquisition, PWM wave injection and reference voltage output of the circuit board under test can all be realized in parallel, that is, the reception of various signals of the circuit board under test and the output of various signals of the circuit board under test can all be realized in parallel.
[0040] In an exemplary embodiment, the DSP acquisition board 120 includes multiple PWM capture circuits 121 and multiple PWM output circuits 123. Among them, the types of digital signals collected by at least two PWM capture circuits 121 are different, and the types of PWM waves output by at least two PWM output circuits 123 are different.
[0041] In this embodiment, the FCT test equipment can test multiple different circuit boards under test in parallel. Among them, multiple PWM capture circuits 121 collect different types of digital signals output by multiple different circuit boards under test in parallel, and multiple PWM output circuits 123 output different types of PWM waves to multiple different circuit boards under test in parallel.
[0042] In an exemplary embodiment, refer to Figure 3, the DSP acquisition board 120 further includes a sensor circuit 125. The sensor circuit 125 includes a plurality of fifth I / O interfaces, and the plurality of fifth I / O interfaces are respectively connected to the first adapter 130. The sensor circuit 125 is configured to output single-sided nibble signals to the circuit board under test sequentially through the first adapter 130, the second adapter 140, and the test point pin board 150.
[0043] In this embodiment, when the sensor is required to perform relevant tests on the circuit board under test, the DSP acquisition board 120 can directly perform tests on the circuit board under test through a plurality of fifth I / O interfaces, so that there is no need to add additional sensors, thereby further reducing the cost of the FCT test equipment. At the same time, the DSP acquisition board 120 can perform parallel tests on each test point of the circuit board under test through a plurality of fifth I / O interfaces, thereby further improving the test efficiency of the test circuit board.
[0044] In an exemplary embodiment, refer to Figure 4 , the DSP acquisition board 120 further includes a plurality of reserved I / O interfaces 126, and the reserved I / O interfaces 126 are connected to the first adapter 130.
[0045] In this embodiment, in addition to the above-mentioned first I / O interface to the fifth I / O interface, the DSP acquisition board 120 further includes reserved I / O interfaces 126. Based on the reserved I / O interfaces 126, parallel tests of other functions can be realized for the circuit board under test according to actual needs, ensuring that the FCT test equipment can meet the parallel tests of all functions of the circuit board under test based on the DSP acquisition board 120.
[0046] In an exemplary embodiment, refer to Figure 5 , the FCT test equipment further includes a terminal 160. The terminal 160 is connected to the industrial control computer 110 through a first communication interface, and the industrial control computer 110 is connected to the DSP acquisition board 120 through a second communication interface. Among them, the terminal 160 communicates with the DSP acquisition board 120 sequentially through the first communication interface, the industrial control computer 110, and the second communication interface.
[0047] In this embodiment, the terminal 160 can also be a PC. The terminal 160 can send instructions to the DSP acquisition board 120, and the DSP acquisition board 120 can send the sampled signals of the circuit board under test collected to the terminal 160. During the communication between the terminal 160 and the DSP acquisition board 120, the industrial control computer 110 can only play the role of signal transmission to improve the test efficiency of the test circuit board.
[0048] In an exemplary embodiment, both the first communication interface and the second communication interface are RS232 interfaces. In this way, there is no need to convert the communication protocol during the communication between the terminal 160 and the DSP acquisition board 120, thereby improving the communication efficiency between the terminal 160 and the DSP acquisition board 120, which is beneficial to further improving the test efficiency of the test circuit board.
[0049] In the related art, during the sampling process, the signal is usually restored according to the sampling value and then sent to the PC, that is, a complete waveform needs to be drawn. Among them, the signal sending process needs to go through CAN - to - RS485 - to - 232 - to - RS485 - to - 232 communication to be sent to the PC; while in the embodiment of the present invention, the acquisition functions of the oscilloscope and multimeter, and the PWM signal source are integrated on the DSP acquisition board 120. It is equivalent to integrating the digital sampling part of the oscilloscope, the PWM wave part of the signal generator, and the sampling module of the multimeter together. The sampling value rather than the restored signal (waveform) can be directly uploaded to the PC through CAN - to - RS485 - to - 232 communication. Compared with the related art, it saves the time consumed by two signal conversions and improves the sampling efficiency. The signal processing ability of the PC is stronger than that of the FCT test equipment. Therefore, even if the signal is restored, its speed will be much faster.
[0050] It can be understood that in the embodiment of the present invention, each functional board or functional module, such as the oscilloscope sampling, the PWM signal source wave generation, the sampling function of the multimeter, and the corresponding signal transceiver, uses existing functional modules in existing devices.
[0051] In an exemplary embodiment, one of the first adapter 130 and the second adapter 140 is a male DB plug, and the other of the first adapter 130 and the second adapter 140 is a female DB plug. In this way, the structure of the FCT test equipment is simple and easy to implement. When different circuit boards to be tested need to be tested, only the test point pin board 150 that matches it needs to be replaced, ensuring that the FCT test equipment can test a variety of different circuit boards to be tested.
[0052] In an exemplary embodiment, continue to refer to Figure 5 , the FCT test equipment further includes a power supply circuit 170. The power supply circuit 170 is used to connect to the circuit board to be tested and provide an appropriate power signal to the circuit board to be tested.
[0053] In an exemplary embodiment, continue to refer to Figure 5 , the power supply circuit 170 includes a low - voltage source circuit 171, a high - voltage source circuit 172, and an AC source circuit 173 to respectively provide appropriate low - voltage source signals, high - voltage source signals, and AC source signals to the circuit board to be tested.
[0054] In an exemplary embodiment, the test point pin board 150 includes a plurality of test pins for adapting to and connecting to a plurality of test points of a circuit board to be tested. Among them, the first end of each test pin is connected to the corresponding test point, and the second end of each test pin is connected to the second adapter 140.
[0055] In this embodiment, the number and distribution of the plurality of test pins of the test point pin board 150 can be adapted to the number and distribution of the plurality of test points of the circuit board to be tested. The number and distribution of the plurality of test pins of a test point pin board 150 can also be adapted to the number and distribution of the plurality of test points of a plurality of different circuit boards to be tested. That is to say, the embodiment of the present utility model can also very conveniently expand the number of channels of the DSP, so that each measurement point can be independently connected to the DSP. By doing so, on the one hand, the use of a relay board for channel switching is avoided, and there is no need to use probes, thus avoiding damage to the circuit board caused by static electricity. It is also convenient to greatly save costs during batch board making.
[0056] In summary, the FCT test device provided by the embodiment of the present application can realize parallel acquisition of digital signals and analog signals of the circuit board to be tested and parallel output of PWM waves and reference voltages to the circuit board to be tested through the DSP acquisition board, so that there is no need to add an oscilloscope, a multimeter, a relay switching board, etc. to serially collect various feedback signals of the circuit board to be tested, nor is it necessary to add a signal generator, a low-voltage source, etc. to serially output the corresponding signals required for the function test of the circuit board to be tested, thereby reducing the cost of the FCT test device and improving the test efficiency of the circuit board to be tested.
[0057] After estimation, taking the test duration of the control board of the vehicle-mounted power controller HEM35 project of the applicant's company as an example, it can be saved from about 680S to 180S, and the single-board test time is saved by 500S. Calculated according to an annual output of 100,000, the test time can be saved by 13,800H (hours), and the labor cost can be reduced by 833,300 yuan.
[0058] Taking the test duration of the control board of the vehicle-mounted power controller HEM32 project of the applicant's company as an example, it can be saved from about 780S to 200S, and the single-board test time is saved by 580S. Calculated according to an annual output of 100,000 sets, the test time is saved by 16,100H (hours), and the labor cost can be reduced by 966,600 yuan.
[0059] In addition, the embodiments of the present utility model can also save the cost of the test bench. Compared with the related art that requires a complete configuration of an oscilloscope, a multimeter, and a signal generator, in the embodiments of the present utility model, only some functional boards in the equipment are used. Therefore, one test bench can save one oscilloscope at 20,000 yuan, one multimeter at 5,000 yuan, one signal generator at 2,500 yuan, and one set of switching boards at 1,000 yuan, totaling 28,500 yuan per unit. When the annual output of vehicle power controllers is 100,000 sets, 12 FCT test benches are required. Therefore, the present utility model can save 28,500×12 = 342,000 yuan.
[0060] In summary, the embodiments of the present utility model have significant economic benefits.
[0061] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0062] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. An FCT test device, characterized in that The FCT test equipment includes an industrial control computer, a DSP acquisition board, a first adapter, a second adapter, and a test point pin board; The industrial control computer is connected to the DSP acquisition board; the DSP acquisition board is connected to the first adapter, the first adapter is connected to the second adapter, and the second adapter is connected to the test point pin board. Among them, the test point pin board is used to adapt to and connect the circuit board to be tested, and the DSP acquisition board is used to parallel-collect digital signals and analog signals output by the circuit board to be tested successively through the test point pin board, the second adapter, and the first adapter, and is used to parallel-output PWM waves and reference voltages to the circuit board to be tested successively through the first adapter, the second adapter, and the test point pin board.
2. The FCT test device according to claim 1, characterized in that, The DSP acquisition board includes: A PWM capture circuit, including a plurality of first I / O interfaces, the first I / O interfaces are connected to the first adapter, and the PWM capture circuit is used to collect the digital signals; An ADC sampling circuit, including a plurality of second I / O interfaces, the second I / O interfaces are connected to the first adapter, and the ADC sampling circuit is used to collect the analog signals; A PWM output circuit, including a plurality of third I / O interfaces, the third I / O interfaces are connected to the first adapter, and the PWM output circuit is used to output the PWM waves; A reference voltage circuit, including a plurality of fourth I / O interfaces, the fourth I / O interfaces are connected to the first adapter, and the reference voltage circuit is used to output the reference voltage.
3. The FCT test device according to claim 2, characterized in that, The DSP acquisition board includes a plurality of the PWM capture circuits and a plurality of the PWM output circuits. Among them, the types of digital signals collected by at least two of the PWM capture circuits are different, and the types of PWM waves output by at least two of the PWM output circuits are different.
4. The FCT test device according to claim 2, characterized in that, The DSP acquisition board further includes: A sensor circuit, including a plurality of fifth I / O interfaces, the fifth I / O interfaces are connected to the first adapter, and the sensor circuit is used to output single-sided half-byte signals to the circuit board to be tested successively through the first adapter, the second adapter, and the test point pin board.
5. The FCT test device according to claim 4, wherein The DSP acquisition board further includes: A plurality of reserved I / O interfaces, the reserved I / O interfaces are connected to the first adapter.
6. The FCT test device according to claim 1, characterized in that The FCT test equipment further includes: A terminal, the terminal is connected to the industrial control computer through a first communication interface, and the industrial control computer is connected to the DSP acquisition board through a second communication interface. Among them, the terminal communicates with the DSP acquisition board successively through the first communication interface, the industrial control computer, and the second communication interface.
7. The FCT test device according to claim 6, wherein Both the first communication interface and the second communication interface are RS232 interfaces.
8. The FCT test device according to claim 1, wherein One of the first adapter and the second adapter is a male DB plug, and the other of the first adapter and the second adapter is a female DB plug.
9. The FCT test device according to claim 1, characterized in that, The FCT test equipment further includes: A power supply circuit, used to connect to the circuit board to be tested and provide an appropriate power supply signal to the circuit board to be tested.
10. The FCT test device according to claim 1, wherein The test point pin board includes a plurality of test pins, and the plurality of test pins are used to adapt to and connect to a plurality of test points of the circuit board to be tested. Among them, the first end of each test pin is connected to the corresponding test point, and the second end of each test pin is connected to the second adapter.