Microprocessor-based functional board card burn-in control system

Abstract

The utility model discloses a function board card ageing control system based on microprocessor, include: current collection module, microprocessor, power control module, communication module and host computer, microprocessor is connected with current collection module and power control module respectively, microprocessor is connected with host computer through communication module, the host computer includes alarm module and display module, microprocessor is connected with alarm module and display module respectively. The system real -time acquisition and monitoring each ageing function board card's current value and operating condition, and show current information in display module, when there is power supply exception, current exception, carry out power -off control and send alarm signal, can provide safe and reliable ageing environment for function board card high temperature ageing.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power product application technology, specifically to a microprocessor-based functional board aging control system. Background Technology

[0002] Currently, nuclear power plants primarily use DCS (Distributed Control System) control systems. The performance of the DCS control system determines whether a nuclear power plant can provide a long-term, efficient, stable, and continuous supply of clean electricity.

[0003] The DCS control system consists of three main categories of boards: controllers, I / O boards, and communication boards. A complete nuclear power plant DCS control system requires tens of thousands of boards of various types, each designed and manufactured based on modern electronic integrated circuit technology. High-temperature aging of functional boards refers to aging them at a constant temperature for a period of time in a high-temperature test chamber while the modules are operating normally. This exposes defects in the functional boards, such as poor soldering, component parameter mismatches, temperature drift, and malfunctions caused during debugging, allowing for their removal. For defect-free functional boards, this process helps stabilize parameters, ensuring the stability and reliability of the product after it leaves the factory and reducing product quality risks. Aging testing is an indispensable testing process in the electronic product manufacturing process. Aging tests for a large number of boards are generally completed in aging chambers. The high-temperature, constant-temperature, and constant-humidity environment of the aging chamber is conducive to the rapid entry of electronic products into the stable region. However, this environment is not suitable for prolonged human work. Therefore, how to monitor and control the high-temperature aging process is a problem that needs to be solved. Utility Model Content

[0004] This invention provides a microprocessor-based functional board aging control system to solve the technical problems existing in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a microprocessor-based functional board aging control system, comprising: a current acquisition module, a microprocessor, a power control module, a communication module, a host computer, an alarm module, and a display module. The microprocessor is connected to the current acquisition module and the power control module, and the microprocessor is connected to the host computer through the communication module. The host computer is connected to the alarm module and the display module.

[0007] Furthermore, the current acquisition module includes a digital isolation circuit, an analog-to-digital converter, and a current sensing amplifier, which are connected in sequence.

[0008] Furthermore, the analog-to-digital converter uses the AD7490 chip.

[0009] Further, the power control module includes a first resistor, a second resistor, a dual-channel optocoupler, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first MOSFET, a second capacitor, a first transient voltage suppressor, a sixth resistor, a seventh resistor, a second capacitor, a second MOSFET, a third capacitor, a second transient voltage suppressor, and an eighth resistor. One end of the first resistor and one end of the second resistor are respectively connected to the positive terminal of the power supply. The other end of the first resistor is connected to the first pin of the dual-channel optocoupler. The other end of the second resistor is connected to the third pin of the dual-channel optocoupler. The seventh pin of the dual-channel optocoupler is connected to one end of the third resistor. The other end of the third resistor is grounded. The eighth pin of the dual-channel optocoupler is connected to one end of the fifth resistor, one end of the first capacitor, and the gate of the first MOSFET. The other end of the fifth resistor and the other end of the first capacitor are respectively connected to the source of the first MOSFET. The drain of the first transceiver is connected to one end of the second capacitor, one end of the first transient voltage suppressor, and the positive terminal of the first slot power supply, respectively. The other end of the second capacitor and the other end of the first transient voltage suppressor are connected to one end of the sixth resistor, and the other end of the sixth resistor is connected to the negative terminal of the first slot power supply. The fifth pin of the dual-channel optocoupler is connected to one end of the fourth resistor, and the other end of the fourth resistor is grounded. The sixth pin of the dual-channel optocoupler is connected to one end of the seventh resistor, one end of the third capacitor, and the gate of the second MOSFET, respectively. The other end of the seventh resistor and the other end of the third capacitor are connected to the source of the second MOSFET, respectively. The drain of the second MOSFET is connected to one end of the fourth capacitor, one end of the second transient voltage suppressor, and the positive terminal of the second slot power supply, respectively. The other end of the fourth capacitor and the other end of the second transient voltage suppressor are connected to one end of the eighth resistor, and the other end of the eighth resistor is connected to the negative terminal of the second slot power supply.

[0010] Furthermore, the dual-channel optical coupler uses the MOCD223M chip.

[0011] Furthermore, it also includes an overcurrent protection module, which is connected to the power control module.

[0012] Furthermore, the overcurrent protection module includes a self-resetting fuse.

[0013] Furthermore, the communication module uses an RS485 bus for data communication.

[0014] Furthermore, the system also includes an external power supply, which is a DC voltage of 24V and an AC voltage of 220V.

[0015] Furthermore, the microprocessor uses an STM32F103VET6 chip.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] This utility model provides a microprocessor-based functional board aging control system that collects and monitors the current value and operating status of each aging functional board in real time, displays the current information in the display module, and performs power-off control and issues alarm signals when there are abnormal power supply or current. It can provide a safe and reliable aging environment for high-temperature aging of functional boards. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 A structural block diagram of a microprocessor-based functional board aging control system provided by this utility model;

[0020] Figure 2 This is a block diagram of the current acquisition module;

[0021] Figure 3 This is the circuit diagram for the power control module;

[0022] Figure 4 This is a circuit diagram of a microprocessor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The software processing involved in this utility model can be implemented using existing technology.

[0025] like Figure 1 As shown, this utility model provides a microprocessor-based functional board aging control system, including: a current acquisition module, a microprocessor, a power control module, a communication module, a host computer, an alarm module, and a display module. The microprocessor is connected to the current acquisition module and the power control module, respectively. The microprocessor is connected to the host computer via the communication module, and the host computer is connected to the alarm module and the display module, respectively. The current acquisition module is used to accurately acquire the current values ​​of each functional board and transmit the acquired current data to the microprocessor. The microprocessor processes the acquired current data and transmits the processed data to the host computer via the communication module. The host computer issues corresponding control commands to the microprocessor, the alarm module, and the display module based on the processed data. The power control module controls the power-on and power-off of each aging slot under the control commands of the microprocessor. Users can view information such as the name, serial number, and aging slot of the functional boards via the host computer. Users can set upper and lower current limits. When an abnormal situation occurs during the aging process of a functional board and the current exceeds the limit, the host computer sends a power-off command to the microprocessor. The microprocessor then controls the power control module to cut off the power to the corresponding aging slot. The host computer also controls the alarm module to issue an alarm signal, serving as a warning. The host computer displays the currently collected information on the display module. The system also includes data input / output interfaces for easy data import and export.

[0026] like Figure 2As shown, the current acquisition module includes a digital isolation circuit, an analog-to-digital converter (ADC), and a current sensing amplifier, which are connected sequentially. The digital isolation circuit uses the ADUM162N0BRZ chip, a digital isolator chip from Analog Devices (ADI). The ADUM162N0BRZ effectively suppresses common-mode interference signals, ensuring the stability and accuracy of signal transmission, and can operate reliably even in harsh electromagnetic environments. It has high robustness to radiated and conducted noise, enhancing the chip's anti-interference capability in complex electromagnetic environments, reducing the impact of noise on signal transmission, and improving the reliability of current acquisition. The ADC uses the AD7490 chip. The AD7490 chip is a high-performance ADC from Analog Devices (ADI) with 12-bit resolution and a sampling rate of up to 1 MSPS, enabling fast data acquisition. It has 16 single-ended analog input channels with sequencers, and the channel conversion order can be selected through pre-programming for convenient multi-channel signal acquisition. The current sensing amplifier uses the INA4180A4QPWRQ1 chip, a four-channel current-sensitive amplifier from Texas Instruments. With four channels, it can simultaneously detect and amplify multiple current signals, effectively saving board space and improving circuit integration. Its gain-bandwidth product is 105kHz, ensuring stable signal amplification within a certain frequency range. The common-mode voltage is up to 12V, allowing the amplifier to operate over a wide common-mode voltage range, enhancing its adaptability to different input signals. The common-mode rejection ratio is 84dB, effectively suppressing common-mode signal interference, improving the amplification accuracy of differential-mode signals, and ensuring the accuracy of the output signal.

[0027] like Figure 3As shown, the power control module includes a first resistor, a second resistor, a dual-channel optocoupler, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first MOSFET, a second capacitor, a first transient voltage suppressor, a sixth resistor, a seventh resistor, a second capacitor, a second MOSFET, a third capacitor, a second transient voltage suppressor, and an eighth resistor. One end of the first resistor and one end of the second resistor are respectively connected to the positive terminal of the power supply. The other end of the first resistor is connected to the first pin of the dual-channel optocoupler. The other end of the second resistor is connected to the third pin of the dual-channel optocoupler. The second and fourth pins of the dual-channel optocoupler are respectively connected to the microprocessor. The seventh pin of the dual-channel optocoupler is connected to one end of the third resistor. The other end of the third resistor is grounded. The eighth pin of the dual-channel optocoupler is connected to one end of the fifth resistor, one end of the first capacitor, and the gate of the first MOSFET. The other ends of the fifth resistor and the first capacitor are respectively connected to the source of the first MOSFET. The dual-channel optocoupler is configured with the following connections: the drain of the first MOSFET is connected to one end of the second capacitor, one end of the first transient voltage suppressor, and the positive terminal of the first slot power supply; the other end of the second capacitor and the other end of the first transient voltage suppressor are connected to one end of the sixth resistor, and the other end of the sixth resistor is connected to the negative terminal of the first slot power supply; the fifth pin of the dual-channel optocoupler is connected to one end of the fourth resistor, and the other end of the fourth resistor is grounded; the sixth pin of the dual-channel optocoupler is connected to one end of the seventh resistor, one end of the third capacitor, and the gate of the second MOSFET; the other end of the seventh resistor and the other end of the third capacitor are connected to the source of the second MOSFET; the drain of the second MOSFET is connected to one end of the fourth capacitor, one end of the second transient voltage suppressor, and the positive terminal of the second slot power supply; the other end of the fourth capacitor and the other end of the second transient voltage suppressor are connected to one end of the eighth resistor, and the other end of the eighth resistor is connected to the negative terminal of the second slot power supply. The dual-channel optocoupler uses the MOCD223M chip for isolating control signals. It electrically isolates the input control signals "SLOT01_Power_Ena" and "SLOT02_Power_Ena", the 3.3V voltage, from the high-voltage side circuit, and transmits control commands via optical signals. The resistors connected to the optocoupler input (such as R1, R2, R3, R4) are current-limiting resistors, limiting the current flowing into the optocoupler to prevent damage due to excessive current, while ensuring the optocoupler operates within a suitable current range. Both the first and second MOSFETs use FQD11P06 field-effect transistors as power switching devices. The FQD11P06 is a TO252 packaged P-channel enhancement-mode field-effect transistor with negative voltage (-60V) and high current capacity (-38A).The optocoupler output signal controls the on / off state of the MOSFET, thereby controlling whether the 24V power supply is output to the corresponding aging slot (the output terminals are marked as "+24V_IN_SLOT01+", "+24V_IN_SLOT01-", "+24V_IN_SLOT02+", and "+24V_IN_SLOT02-"). Resistors (such as R5 and R7) connected to the MOSFET gate are used to set the gate voltage, and capacitors (such as C1 and C3) are used to stabilize the gate voltage and prevent MOSFET malfunction. When an overvoltage occurs at the output terminal, the first transient voltage suppressor (TVST1) and the second transient voltage suppressor (TVST2) quickly conduct, clamping the overvoltage within a safe range and protecting downstream circuit components from excessive voltage surges. R6 and R8 are sampling resistors used to detect the output current. By measuring the voltage drop across the resistors, the magnitude of the output current can be indirectly obtained, achieving overcurrent protection and other functions.

[0028] In this embodiment, the system further includes an overcurrent protection module connected to the power control module. The overcurrent protection module includes a resettable fuse with a rated current of 2A. When the current in the circuit is too high, the resettable fuse blows, protecting the components of the power control module from overcurrent damage.

[0029] The communication module uses an RS485 bus for data communication. RS485 is a widely used serial communication standard that uses differential signal transmission: it uses a pair of twisted pairs, one wire defined as A and the other as B, transmitting signals that are mirror images of each other. The logic state is determined by detecting the voltage difference between the two wires. It has strong anti-interference capabilities, effectively eliminates common-mode noise, and can reliably transmit signals in environments with high electrical noise.

[0030] The system also includes an external power supply, which is available in 24V DC and 220V AC versions. A manual power switch is provided, allowing users to select the appropriate external power source as needed. Using an external power supply ensures the stability of the power supply to the functional boards during high-temperature aging.

[0031] like Figure 4As shown, the microprocessor uses the STM32F103VET6 chip. The STM32F103VET6 is a 32-bit microcontroller based on the ARM Cortex-M3 core, manufactured by STMicroelectronics. It boasts a maximum frequency of 72MHz, a performance of 1.25DMIPS / MHz, supports single-cycle multiplication and hardware division, and provides high-efficiency processing power and response speed to meet the needs of various complex applications. It is equipped with 256 to 512KB of flash memory for storing programs and data, and up to 64KB of SRAM, providing ample space for data processing and temporary storage. It also features a flexible static memory controller supporting compact flash, SRAM, PSRAM, NOR, and NAND memories, as well as an LCD parallel interface in 8080 / 6800 modes for easy connection to external storage devices and LCD displays. The operating power supply voltage range is 2.0V to 3.6V, and it features power-on reset (POR), power-down reset (PDR), and a programmable voltage detector (PVD). The chip supports crystal oscillators from 4 to 16 MHz, with an internal 8 MHz factory-tuned RC and 40 kHz RC with calibration, as well as a 32 kHz oscillator for RTC calibration. It supports low-power modes such as sleep, stop, and standby, effectively reducing system power consumption. It integrates three 12-bit 1μs analog-to-digital converters with up to 21 channels, a conversion range of 0 V to 3.6 V, triple sampling and hold capabilities, and can simultaneously acquire and convert multiple analog signals. It also has a built-in temperature sensor for real-time chip temperature monitoring. Additionally, it features two 12-bit D / A converters to convert digital signals to analog signals for controlling analog devices or generating analog waveforms. It features up to 11 timers, including four general-purpose 16-bit timers, each with up to four IC / OC / PWM or pulse counters and quadrature (incremental) encoder inputs; two 16-bit motor control PWM timers with dead-time generation and emergency stop functions; two watchdog timers (independent and windowed); a SysTick timer (24-bit lower counter); and two 16-bit basic timers for driving the DAC. It has 13 communication interfaces, including up to two I2C interfaces (SMBus / PMBus), up to five USARTs (supporting ISO 7816 interface, LIN, IrDA functions, and modem control), up to three SPIs (18 Mbit / s, two of which are multiplexed with I2S interfaces), a CAN interface (2.0B active), a USB 2.0 full-speed interface, and an SDIO interface.

[0032] This utility model provides a microprocessor-based functional board aging control system that collects and monitors the current value and operating status of each aging functional board in real time, displays the current information in the display module, and performs power-off control and issues alarm signals when there are abnormal power supply or current. It can provide a safe and reliable aging environment for high-temperature aging of functional boards.

[0033] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A microprocessor-based functional board aging control system, characterized in that, include: The system comprises a current acquisition module, a microprocessor, a power control module, a communication module, a host computer, an alarm module, and a display module. The microprocessor is connected to the current acquisition module and the power control module, respectively. The microprocessor is connected to the host computer via the communication module, and the host computer is connected to the alarm module and the display module, respectively. The power control module includes a first resistor, a second resistor, a dual-channel optocoupler, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first MOSFET, a second capacitor, a first transient voltage suppressor, a sixth resistor, a seventh resistor, a second MOSFET, a third capacitor, a second transient voltage suppressor, and an eighth resistor. One end of the first resistor and one end of the second resistor are respectively connected to the positive terminal of the power supply. The other end of the first resistor is connected to the first pin of the dual-channel optocoupler, and the other end of the second resistor is connected to the third pin of the dual-channel optocoupler. The seventh pin of the dual-channel optocoupler is connected to one end of the third resistor, and the other end of the third resistor is grounded. The eighth pin of the dual-channel optocoupler is connected to one end of the fifth resistor, one end of the first capacitor, and the gate of the first MOSFET. The other ends of the fifth resistor and the first capacitor are respectively connected to the source of the first MOSFET. The drain of the first MOSFET is respectively... One end of the second capacitor, one end of the first transient voltage suppressor, and the positive terminal of the first slot power supply are connected. The other end of the second capacitor and the other end of the first transient voltage suppressor are respectively connected to one end of the sixth resistor. The other end of the sixth resistor is connected to the negative terminal of the first slot power supply. The fifth pin of the dual-channel optocoupler is connected to one end of the fourth resistor, and the other end of the fourth resistor is grounded. The sixth pin of the dual-channel optocoupler is respectively connected to one end of the seventh resistor, one end of the third capacitor, and the gate of the second MOSFET. The other end of the seventh resistor and the other end of the third capacitor are respectively connected to the source of the second MOSFET. The drain of the second MOSFET is respectively connected to one end of the fourth capacitor, one end of the second transient voltage suppressor, and the positive terminal of the second slot power supply. The other end of the fourth capacitor and the other end of the second transient voltage suppressor are respectively connected to one end of the eighth resistor. The other end of the eighth resistor is connected to the negative terminal of the second slot power supply.

2. The microprocessor-based functional board aging control system as described in claim 1, characterized in that, The current acquisition module includes a digital isolation circuit, an analog-to-digital converter, and a current sensing amplifier, which are connected in sequence.

3. The microprocessor-based functional board aging control system as described in claim 2, characterized in that, The analog-to-digital converter uses the AD7490 chip.

4. The microprocessor-based functional board aging control system as described in claim 1, characterized in that, The dual-channel optical coupler uses the MOCD223M chip.

5. The microprocessor-based functional board aging control system as described in claim 1, characterized in that, It also includes an overcurrent protection module, which is connected to the power control module.

6. The microprocessor-based functional board aging control system as described in claim 5, characterized in that, The overcurrent protection module includes a self-resetting fuse.

7. The microprocessor-based functional board aging control system as described in claim 1, characterized in that, The communication module uses an RS485 bus for data communication.

8. The microprocessor-based functional board aging control system as described in claim 1, characterized in that, The system also includes an external power supply, which is a DC voltage of 24V and an AC voltage of 220V.

9. The microprocessor-based functional board aging control system as described in any one of claims 1-8, characterized in that, The microprocessor uses an STM32F103VET6 chip.

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