Conditioning box system for testing domestic nuclear power DCS single board

Abstract

The invention discloses a conditioning box system for testing a domestic nuclear power DCS single board, and relates to the technical field of DCS single board testing. The conditioning box system for testing the domestic nuclear power DCS single board comprises a machine box, a machine box panel is installed on the outer wall of the front side of the machine box, a conditioning card module, a bottom plate, a function switching array card, a power source bottom plate array card and a J connector set are arranged in the machine box, and a chip board card burning simulation interface is arranged on the outer side of the machine box panel; the conditioning card module comprises a computing power card, an AI-AO conditioning card, a DI-DO conditioning card, an RTD conditioning card, a TC-PI conditioning card and an IOP conditioning card. According to the invention, through the accurate detection module and the reasonable detection process, the defect of misjudgment easily caused by manual detection is overcome, and the problems of the PCBA single board from the macroscopic circuit connection condition to the microscopic component performance parameters and the like can be accurately detected; it is guaranteed that each nuclear power card PCBA single board put into use meets the high-quality and high-performance nuclear power application standard, and the detection precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of DCS single board testing, and in particular to a conditioning box system for testing a domestic nuclear power DCS single board. Background Art

[0002] In the field of nuclear power, various control and monitoring systems rely on a large number of nuclear power cards to ensure the safe and stable operation of nuclear power plants. As the core components of nuclear power cards, AI, AO, DI, DO, RTD, PI, TC, and IOP have a direct impact on the performance and quality of the entire card.

[0003] Traditionally, the inspection of nuclear power card PCBA single board often relies on manual inspection combined with some simple inspection instruments, which has many disadvantages. Nuclear power card PCBA inspection is to manually inspect each point. The manual inspection efficiency is low and it is easily affected by the subjective factors of the inspectors. For example, the mixing of materials cannot be judged manually and misjudgment occurs, and the misdetection rate is high. In addition, the PCBA single board of nuclear power card usually has a complex circuit structure and high quality and performance requirements. It is difficult for manual inspection to fully and accurately detect problems such as small short circuits, multi-way welding, Flash chip damage, EPROM damage, open circuits, and some potential poor performance of components, mixing of materials cannot be judged manually, and MCU and FPGA program burning is complicated. In addition, due to the large number of communication protocols and private protocols, the existing equipment cannot test communication functions, test data records need to be manually written in the report, and cannot be mass-produced. In addition, with the continuous expansion of the scale of nuclear power plant construction, the demand for nuclear power card parts is increasing, and traditional inspection methods are difficult to meet the actual needs of fast, efficient and accurate inspection. Therefore, there is an urgent need for a device that can automatically and accurately detect nuclear power card PCBA single boards to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a conditioning box system for testing a single board of a domestic nuclear power DCS, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a conditioning box system for testing a domestic nuclear power DCS single board, comprising a chassis, a chassis panel is installed on the front outer wall of the chassis, a conditioning card module, a bottom plate, a function switching array card, a power bottom plate array card, and a J303 connector group are arranged inside the chassis, and a chip board burning simulation interface is arranged on the outer side of the chassis panel;

[0006] The conditioning card module includes a computing power card, an AI-AO conditioning card, a DI-DO conditioning card, an RTD conditioning card, a TC-PI conditioning card, an IOP conditioning card, and a base conditioning card.

[0007] Preferably, the core of the computing power card adopts a high-performance MCU based on the ARMCortex-M7 core as the main chip. The computing power card integrates Profinet, ModbusTCP and RTU communication functions, and combines a real-time operating system and a data analysis engine, which can realize efficient data processing and analysis on the device side. These communication protocols enable the terminal to seamlessly connect with different industrial control systems (such as DCS, robotic arms, industrial cameras, etc.) to achieve rapid data transmission and analysis. In the conditioning box, it is mainly used for upper computer communication and lower computer conditioning cards and function scheduling between array cards.

[0008] Preferably, the AI-AO conditioning card, DI-DO conditioning card, RTD conditioning card, TC-PI conditioning card, IOP conditioning card, and base conditioning card provide the tested board with 24V, 5V, and 3.3V power supplies, monitor -15 to +15V output voltage, multi-channel open circuit & short circuit detection, 4 to 20mA injection and acquisition functions, I2C, SPI communication detection functions, multi-channel precision resistor array sources, TCP, UDP, RS485 & 422 communication detection, RJ45 network differential line test function, dry contact, pulse input, output function, MCU, FPGA program automatic burning, and board LED detection function.

[0009] Preferably, the baseboard, function switching array card, and power baseboard array card obtain the type of the board to be tested according to the computing power card, switch the required PIN pins, and power on the corresponding conditioning card.

[0010] Preferably, the J303 connector group is used to connect the needle bed, and a plug interface for the J303 connector group is provided on one side of the chassis.

[0011] Preferably, the chip board burning simulation interface is used for the computing power card to notify the host computer to burn the MCU and FPGA programs of the board under test.

[0012] Preferably, heat dissipation holes are provided on both side outer walls of the chassis, and a handle is fixedly connected to the front outer wall of the chassis, and the handle is symmetrically arranged on the outer side of the chassis.

[0013] Compared with the related art, the conditioning box system for testing domestic nuclear power DCS single board provided by the present invention has the following beneficial effects:

[0014] 1. The present invention provides a conditioning box system for testing domestic nuclear power DCS single boards, which realizes fully autonomous and controllable online board detection of domestic chips and completes the testing functions of various nuclear power card PCBAs such as AI, AO, DI, DO, TC, PI, RTD, and IOP.

[0015] 2. The present invention provides a conditioning box system for testing domestic nuclear power DCS single boards. Based on the bionic visual detection of boards with high-accuracy image recognition algorithms in complex environments, it can accurately locate and troubleshoot board faults and realize intelligent and automatic handling.

[0016] 3. The present invention provides a conditioning box system for testing domestic nuclear power DCS single boards. A network communication module with network security is designed using domestic chips through self-developed algorithms to reduce dependence on foreign network chips, improve network communication security, improve equipment reliability, and reduce costs in device production.

[0017] 4. The present invention provides a conditioning box system for testing domestic nuclear power DCS single boards, which can automatically detect nuclear power card PCBA single boards without excessive human intervention, and can quickly complete the detection of various performance indicators of the single board, greatly shortening the detection cycle, meeting the production rhythm requirements of nuclear power plants for the rapid commissioning of a large number of nuclear power cards, and improving detection efficiency.

[0018] 5. The present invention provides a conditioning box system for testing domestic nuclear power DCS boards. Through precise detection modules and reasonable detection processes, the defect of easy misjudgment in manual detection is overcome, and the problems existing in many aspects of PCBA boards from macro circuit connection conditions to micro component performance parameters can be accurately detected, ensuring that each nuclear power card PCBA board put into use meets high-quality and high-performance nuclear power application standards, thereby improving detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a side view structural schematic diagram of the present invention;

[0022] Figure 4 It is a detection flow chart of the present invention.

[0023] In the figure: 1. Chassis panel; 2. Conditioning card module; 3. Base plate; 4. Function switching array card; 5. Power base plate array card; 6. J303 connector group; 7. Chassis; 8. Chip board burning simulation interface; 9. Heat dissipation hole; 10. Handle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 4 The present invention provides a technical solution: a conditioning box system for testing a domestic nuclear power DCS single board, comprising a chassis 7, a chassis panel 1 is installed on the front outer wall of the chassis 7, a conditioning card module 2, a bottom board 3, a function switching array card 4, a power bottom board array card 5, and a J303 connector group 6 are arranged inside the chassis 7, and a chip board burning simulation interface 8 is arranged on the outer side of the chassis panel 1;

[0026] The conditioning card module 2 includes a computing power card, an AI-AO conditioning card, a DI-DO conditioning card, an RTD conditioning card, a TC-PI conditioning card, an IOP conditioning card, and a base conditioning card.

[0027] The core of the computing power card uses a high-performance MCU based on the ARMCortex-M7 core as the main chip. The computing power card integrates Profinet, ModbusTCP and RTU communication functions, and combines a real-time operating system and a data analysis engine. It can achieve efficient data processing and analysis on the device side. These communication protocols enable the terminal to seamlessly connect with different industrial control systems such as DCS, robotic arms, industrial cameras, etc., to achieve rapid data transmission and analysis. In the conditioning box, it is mainly used for upper computer communication and lower computer conditioning cards and function scheduling between array cards.

[0028] Among them, AI-AO conditioning card, DI-DO conditioning card, RTD conditioning card, TC-PI conditioning card, IOP conditioning card, and base conditioning card provide 24V, 5V, and 3.3V power supplies to the tested boards, monitor -15 to +15V output voltage, multi-channel open circuit & short circuit detection, 4 to 20mA injection and acquisition functions, I2C, SPI communication detection functions, multi-channel precision resistor array sources, TCP, UDP, RS485 & 422 communication detection, RJ45 network differential line test function, dry contact, pulse input, output function, MCU, FPGA program automatic burning, and board LED detection function.

[0029] Among them, the baseboard 3, the function switching array card 4, and the power baseboard array card 5 get the type of the board under test according to the computing power card, switch the required PIN pins and power on the corresponding conditioning card.

[0030] The J303 connector group 6 is used to connect the needle bed, and a plug interface for the J303 connector group 6 is provided on one side of the chassis 7.

[0031] Among them, the chip board burning simulation interface 8 is used for the computing power card to notify the host computer to burn the MCU and FPGA programs of the board under test.

[0032] In this implementation scheme, the computing power card controls the industrial camera to identify the board type, compares the identified board with the currently selected board type, and sends instructions to the power array card after passing the comparison, switches and turns on the corresponding conditioning card power supply, PIN point and J303 connector docking, and powers on the corresponding conditioning card to detect whether there is a power short circuit in the board under test. If there is no short circuit, the board under test is powered on, and the MUC and FPGA programs are downloaded after power supply. After the download is completed, the board under test is automatically restarted and a communication channel is established. After the channel is established, the various functions of the board PIN points are tested in turn. After the test is completed, the results are fed back to the computing power card. The computing power card uploads each test result to the host computer and saves the test log, and then starts a new round of testing.

[0033] The present invention relates to an edge computing terminal computing power card based on MCU plus multiple conditioning cards such as AO, AI, DO, DI, IOP, TC, PI, RTD, etc., which can share a set of conditioning boxes and needle beds through precise layout design; the design adopts high-performance microprocessors STM32 and GD32 dual redundancy, Profinet, ModbusTCP, RTU communication functions, and combines real-time operating system and data analysis engine, which can realize efficient data processing and original signal generation source technology and pressure flow following analysis technology on the device side, and ensure the accuracy and stability of test data in board card testing;

[0034] Functional array and precision control of conditioning card: The key to accurately detect PCBA boards is to use array switching and high-precision measurement technology for each sub-module in the conditioning card according to the type of board being tested. For example, micro-resistance measurement technology must achieve sufficient resolution when detecting circuit connectivity to detect tiny short circuits or open circuits; in component performance testing, the independently designed measurement circuits and software algorithms will directly affect the accuracy of component performance judgments when measuring various types of components.

[0035] The outer walls on both sides of the chassis 7 are provided with heat dissipation holes 9 , and the front outer wall of the chassis 7 is fixedly connected with a handle 10 , which is symmetrically arranged on the outer side of the chassis 7 .

[0036] In this embodiment, heat dissipation holes 9 are provided on both sides of the outer wall of the chassis 7 to effectively improve the heat dissipation effect inside the chassis. Through the heat dissipation holes 9, the heat generated inside the chassis 7 can be discharged more smoothly, preventing the performance degradation or damage of the device due to overheating, thereby extending the service life of the device. The handle 10 makes the chassis 7 more convenient when it needs to be moved or carried.

[0037] Working principle: First, the computing power card controls the industrial camera to identify the board type, compares the identified board with the currently selected board type, and sends instructions to the power array card after passing, switches and turns on the corresponding conditioning card power supply, PIN point and J303 connector docking, and powers on the corresponding conditioning card to detect whether the board under test has a power short circuit. If not, the board under test is powered on, and the MUC and FPGA programs are downloaded after powering on. After the download is completed, the board under test is automatically restarted and a communication channel is established. After the channel is established, the functions of the board PIN points are tested in turn. After the test is completed, the results are fed back to the computing power card. The computing power card uploads each test result to the host computer and saves the test log, and then starts a new round of testing.

[0038] The present invention relates to an edge computing terminal computing power card based on MCU plus various conditioning cards such as AO, AI, DO, DI, IOP, TC, PI, RTD, etc., and a detection system that can share a set of conditioning boxes and needle beds is designed through precise layout; the design adopts high-performance microprocessors STM32 and GD32 dual redundancy, Profinet, ModbusTCP, RTU communication functions, and combines a real-time operating system and a data analysis engine, and can realize efficient data processing and original signal generation source technology and pressure flow following analysis technology on the device side, and ensure the accuracy and stability of test data in board card testing.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A conditioning box system for testing a single board of a domestic nuclear power DCS, comprising a box (7), characterized in that: The front outer wall of the chassis (7) is provided with a chassis panel (1), the interior of the chassis (7) is provided with a conditioning card module (2), a baseboard (3), a function switching array card (4), a power baseboard array card (5), and a J303 connector group (6), and the outer side of the chassis panel (1) is provided with a chip board burning simulation interface (8); The conditioning card module (2) comprises a computing power card, an AI-AO conditioning card, a DI-DO conditioning card, an RTD conditioning card, a TC-PI conditioning card, an IOP conditioning card, and a base conditioning card.

2. According to claim 1, a conditioning box system for testing a single board of a domestic nuclear power DCS is characterized in that: The core of the computing power card adopts a high-performance MCU based on the ARMCortex-M7 core as the main chip. The computing power card integrates Profinet, ModbusTCP and RTU communication functions, and combines a real-time operating system and a data analysis engine.

3. A conditioning box system for testing a domestic nuclear power DCS single board according to claim 1, characterized in that: The AI-AO conditioning card, DI-DO conditioning card, RTD conditioning card, TC-PI conditioning card, IOP conditioning card, and base conditioning card provide the tested board with 24V, 5V, and 3.3V power supplies, monitor -15 to +15V output voltage, multi-channel open circuit & short circuit detection, 4 to 20mA injection and acquisition functions, I2C, SPI communication detection functions, multi-channel precision resistor array sources, TCP, UDP, RS485 & 422 communication detection, RJ45 network differential line test function, dry contact, pulse input, output function, MCU, FPGA program automatic burning, and board LED detection function.

4. According to claim 1, a conditioning box system for testing a single board of a domestic nuclear power DCS is characterized in that: The baseboard (3), the function switching array card (4), and the power baseboard array card (5) obtain the type of the board to be tested according to the computing power card, switch the required PIN pins and power on the corresponding conditioning card.

5. The conditioning box system for testing a single board of a domestic nuclear power DCS according to claim 1 is characterized in that: The J303 connector group (6) is used to connect the needle bed, and a plug interface for the J303 connector group (6) is provided on one side of the chassis (7).

6. The conditioning box system for testing a single board of a domestic nuclear power DCS according to claim 1 is characterized by: The chip board burning simulation interface (8) is used by the computing power card to notify the host computer to burn the MCU and FPGA programs of the board under test.

7. The conditioning box system for testing a single board of a domestic nuclear power DCS according to claim 1 is characterized in that: Both side outer walls of the chassis (7) are provided with heat dissipation holes (9), and the front outer wall of the chassis (7) is fixedly connected with a handle (10), and the handle (10) is symmetrically arranged on the outer side of the chassis (7).

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