Universal power supply board card circuit system based on testability analysis

Abstract

The invention discloses a general power supply board card circuit system based on testability analysis. The system comprises a power supply module, an input protection and filter circuit and a redundant circuit, according to the redundant circuit, double-path input is adopted, and an ORing controller XC4355DAA is used for controlling an N-type MOSFET to achieve redundant power supply. M temperature sensors are arranged in the power supply module; the universal power supply board card circuit system further comprises a health management circuit, and the health management circuit collects working voltage, current and temperature monitoring data of the power supply board card circuit system. And performing testability analysis on the power board card based on health management software, wherein the health management software consists of a management software configuration item and an assistance software configuration item. According to the invention, real-time monitoring and intelligent management are realized; the shutdown risk is reduced, and the continuity of key tasks is ensured; high efficiency and energy conservation are realized; multi-point temperature monitoring; a fault self-diagnosis mechanism; the data analysis is connected with the cloud; and the design is flexible and the adaptability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of testability design analysis, and in particular relates to a universal power board circuit system based on testability analysis. Background Art

[0002] In modern electronic equipment, the stability and reliability of the power supply system are the key to ensure the normal operation of the entire system. With the rapid development of information technology, the performance and functions of electronic equipment are increasingly enhanced, and the requirements for power supply are also increasing. Especially in industrial automation, communication equipment and computer systems, power boards not only need to provide stable voltage and current, but also must have good anti-interference capabilities and fault self-diagnosis and recovery mechanisms. In this context, a universal power board circuit system based on testability analysis came into being, becoming an effective way to optimize power performance and improve system reliability.

[0003] First, traditional power management systems often rely on simple protection circuits and filter circuits, which are unable to monitor and analyze the working status of the power supply in real time. With the advancement of power electronics technology, power management solutions using integrated circuits and digital control technology have gradually become a trend. By monitoring parameters such as current, voltage, and temperature in real time, it is possible to respond in a timely manner when an abnormality occurs, thereby preventing equipment damage and production stagnation.

[0004] Secondly, in many critical application scenarios, such as data centers, medical equipment, and aerospace systems, any power failure may lead to serious consequences. How to ensure that the system can still work normally when one power path fails is an important requirement of modern power supply design.

[0005] In addition, with the rise of renewable energy, the input sources of power systems have become more diverse. Traditional AC / DC conversion and DC / DC conversion technologies need to be continuously optimized to adapt to different input voltages and output requirements.

[0006] Finally, considering the adaptability of the power system in various environments, designers need to make comprehensive improvements in hardware and software. Summary of the invention

[0007] In view of the defects existing in the above-mentioned prior art, the present invention provides a universal power board circuit system based on testability analysis, which is characterized by:

[0008] The universal power board circuit system includes a power module, an input protection and filtering circuit, a 12V AC / DC conversion circuit, a 12V DC / DC conversion circuit, a 5V step-down circuit, a 3.3V step-down circuit, a -12V isolated DC / DC circuit and a redundant circuit;

[0009] The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection, the 12V AC / DC conversion circuit converts the AC voltage into a DC 12V voltage output, the 12VDC / DC conversion circuit realizes the conversion of the DC voltage into a DC 12V voltage output, the above two DC 12V voltages are combined into one way by the redundant circuit and then output, the 5V step-down circuit converts the 12V voltage into a 5V voltage output, the 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output, the -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output, the redundant circuit is a circuit for constructing N+1 redundant power supply, which adopts dual-way input and controls the N-type MOSFET through the ORing controller XC4355DAA to realize redundant power supply;

[0010] Arranging m temperature sensors in the power module;

[0011] The universal power board circuit system further comprises a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system;

[0012] Performing power board testability analysis based on health management software, wherein the health management software consists of management software configuration items and assistance software configuration items;

[0013] The management software configuration item obtains the voltage, current and temperature monitoring data of the power board circuit system through the I2C bus, obtains the PCIE acquisition data of the power board circuit system from the auxiliary software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to perform comprehensive power monitoring of each output terminal in the power board:

[0014]

[0015] The following formula is used for temperature monitoring:

[0016]

[0017] Where P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, is temperature attenuation coefficient, is current sensitivity coefficient, I th is the current threshold, S j is the jth temperature sensor reading, and is the weighting coefficient.

[0018] The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor MOV. The fuse is selected according to the rated output power and the minimum input voltage of the power supply. The fuse in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current value of 3A and a rated voltage value of 300VAC. The two TVS tubes connected in series are selected as SMCJ170CA.

[0019] The minimum value of the DC power input is 18V, then the maximum input current Imax=18.33A, the fuse model used in the DC input protection and filtering circuit is RR1032F003072, the rated current value is 30A, the rated voltage value is 72V, and the TVS tube model is SMCJ40CA;

[0020] The filter circuit includes a common mode inductor, a differential mode inductor, an X capacitor, a Y capacitor and a parallel resistor for discharging the X capacitor.

[0021] Among them, the 12V AC / DC conversion circuit model uses the APL220W350T12SN module, which has an input voltage range of 85VAC~264VAC, an output voltage of 12V, a substrate temperature range of -40℃~+100℃, a standard 1 / 2 brick package, an output power of 350W, and a conversion efficiency of 92% at full load. It has input over- and under-voltage protection, output over-voltage protection, output short-circuit protection, and over-temperature protection.

[0022] Among them, the 12V DC / DC conversion circuit model uses the EQBS360-028S12NTB2L module, which has an input voltage range of DC16V~40V, an output voltage of 12V, a substrate temperature range of -40℃~+100℃, a standard 1 / 4 brick package, an output power of 360W, and a conversion efficiency of 94% at full load. It has input over-voltage and under-voltage protection, output overvoltage protection, output short-circuit protection, and over-temperature protection.

[0023] Among them, the 5V step-down circuit converts the 12V DC voltage into a 5V output, which is used by the load after filtering. The model is the HCE4630ML module. The module adopts a BUCK topology structure to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. The two outputs have a maximum total output current of 30A and a size of 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0024] Among them, the 3.3V step-down circuit converts the 12V DC voltage into a 3.3V output, which is used by the load after filtering. The model is the HCE4620ML module. The module adopts a BUCK topology structure to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. The two outputs have a maximum output current of 13A and a size of 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0025] Among them, the -12V isolated DC / DC circuit model uses the HMA20DC18S12SN module, which is an isolated DC-DC conversion circuit that converts the input DC9V-36V into DC12V output, with an output power of 20W and a conversion efficiency of 87%.

[0026] The redundant circuit model controls two 12V power supplies to be converted into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

[0027] Among them, a current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V~48V.

[0028] Wherein, the universal power board circuit system also includes an output filter circuit, and the 5V step-down circuit and the 3.3V step-down circuit use a non-isolated converter;

[0029] The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV.

[0030] The 12V output has a CLC filter added after the current limiting circuit;

[0031] The universal power board circuit system also includes an anti-reverse connection circuit, which is composed of a switch composed of an NMOS tube, a gate of the NMOS tube is driven by a voltage pump, and the voltage pump is powered by a stable 12V power supply generated by an LDO.

[0032] The present invention has the following advantages:

[0033] The system integrates comprehensive power monitoring and temperature monitoring functions, and can obtain voltage, current and temperature data in real time. This real-time monitoring capability enables the system to dynamically adjust the working state and respond to abnormal situations in a timely manner. Through intelligent management, the system can automatically perform fault diagnosis and protection, reduce human intervention, and improve reliability.

[0034] The N+1 redundant design ensures that the system can still operate normally when one power path fails. This design enhances the reliability of the system, especially in critical application scenarios such as data centers and medical equipment. The redundant design enables the system to continue to operate when a failure occurs, reducing the risk of downtime and ensuring the continuity of critical tasks.

[0035] By optimizing power management strategies (such as dynamic voltage adjustment), the energy efficiency of power modules can be significantly improved and energy loss can be reduced. While improving system performance, it also reduces operating costs and helps achieve sustainable development goals.

[0036] Placing temperature sensors at multiple key locations can more comprehensively monitor the thermal status of the system. This multi-point monitoring can avoid overheating problems caused by single-point failures. By monitoring the temperature of different areas, heat distribution can be managed more effectively, heat dissipation efficiency can be improved, and equipment life can be extended.

[0037] The system integrates a fault self-diagnosis function, which can automatically switch to redundant power supply or initiate other protection measures when an abnormality is detected. This self-diagnosis capability reduces fault handling time, improves the convenience of system maintenance, and reduces maintenance costs.

[0038] The system can transmit monitoring data to the cloud in real time for data analysis and remote monitoring.

[0039] Cloud data analysis can help users conduct more in-depth performance evaluation and trend prediction, supporting intelligent decision-making.

[0040] The system is designed to be flexible and can adapt to changes in different input sources (such as renewable energy), which enhances the system's adaptability. This adaptability enables the system to perform well in a variety of application scenarios and meet the needs of different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0042] Figure 1 is a block diagram showing a circuit board consistent with an embodiment of the present invention;

[0043] Figure 2 1 is a block diagram showing the composition of a power supply circuit consistent with an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. 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 creative work are within the scope of protection of the present invention.

[0045] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0046] It should be understood that although the terms first, second, third, etc. may be used to describe ... in the embodiments of the present invention, these ... should not be limited to these terms. These terms are only used to distinguish .... For example, without departing from the scope of the embodiments of the present invention, the first ... may also be referred to as the second ..., and similarly, the second ... may also be referred to as the first ....

[0047] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0049] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0050] Large-scale ship systems contain a large number of sensor acquisition devices and actuators. Since they are usually in the form of chimneys, it is necessary to develop corresponding applications specifically for ship equipment, which leads to serious coupling problems between applications and equipment. Therefore, an effective method is needed to improve data processing and control efficiency, facilitate the expansion of ship equipment systems, and simplify the application development process to solve the serious coupling problem of ship equipment, data and applications in the existing technology.

[0051] like Figure 1 As shown, the present invention discloses a universal power board circuit system based on testability analysis, wherein:

[0052] The universal power board circuit system includes a power module, an input protection and filtering circuit, a 12V AC / DC conversion circuit, a 12V DC / DC conversion circuit, a 5V step-down circuit, a 3.3V step-down circuit, a -12V isolated DC / DC circuit and a redundant circuit;

[0053] The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection, the 12V AC / DC conversion circuit converts the AC voltage into a DC 12V voltage output, the 12VDC / DC conversion circuit realizes the conversion of the DC voltage into a DC 12V voltage output, the above two DC 12V voltages are combined into one way by the redundant circuit and then output, the 5V step-down circuit converts the 12V voltage into a 5V voltage output, the 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output, the -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output, the redundant circuit is a circuit for constructing N+1 redundant power supply, which adopts dual-way input and controls the N-type MOSFET through the ORing controller XC4355DAA to realize redundant power supply;

[0054] Arranging m temperature sensors in the power module;

[0055] The universal power board circuit system further comprises a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system;

[0056] Performing power board testability analysis based on health management software, wherein the health management software consists of management software configuration items and assistance software configuration items;

[0057] The management software configuration item obtains the voltage, current and temperature monitoring data of the power board circuit system through the I2C bus, obtains the PCIE acquisition data of the power board circuit system from the auxiliary software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to monitor the comprehensive power of the output end of the power board:

[0058]

[0059] The following formula is used for temperature monitoring:

[0060]

[0061] Where P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, is temperature attenuation coefficient, is current sensitivity coefficient, I th is the current threshold, S j is the jth temperature sensor reading, and is the weighting coefficient.

[0062] Among them, comprehensive power monitoring is mainly carried out at the output end of the power board, especially at the output end of the 12VAC / DC conversion circuit and the 12V DC / DC conversion circuit.

[0063] The specific monitoring circuit may include a current sensor and a voltage sensor, which transmit the output voltage and current signals to the health management circuit.

[0064] The main function of comprehensive power monitoring is to calculate the output power of the power supply in real time to ensure that the power supply system operates within a safe range.

[0065] By monitoring the output power, potential overload conditions can be detected in time, thus triggering the protection mechanism to prevent damage to the power module.

[0066] Among them, temperature monitoring is usually performed near the key components of the power board, including:

[0067] Transformer and rectifier for 12V AC / DC conversion circuit;

[0068] Switching elements and inductors for 12V DC / DC conversion circuits;

[0069] Buck module (5V and 3.3V buck circuit) and its heat sink.

[0070] Monitoring uses sensors such as thermistors (NTC or PTC), and these sensors are usually centrally managed by health management circuits.

[0071] The main function of temperature monitoring is to ensure that the power board operates within a safe operating temperature range to prevent failures caused by overheating.

[0072] By monitoring the temperature, the cooling system (such as fans or heat sinks) can be dynamically adjusted to ensure that the system effectively dissipates heat under high load conditions.

[0073] Temperature monitoring data can also be used for fault prediction, helping to identify potential problems that may result from prolonged high-temperature operation.

[0074] k is the proportionality factor in the temperature monitoring formula, which is usually determined by the characteristics of the sensor and can be measured experimentally. For example, when using an NTC thermistor, k can be calculated using the characteristic curve of the sensor.

[0075] α is the temperature attenuation coefficient, which indicates the degree of influence of temperature on power, and is usually obtained by fitting experimental data. It can be obtained by measuring the power output at different temperatures and performing regression analysis.

[0076] β is the current sensitivity coefficient, which indicates the degree of influence of current change on power monitoring. It is obtained by experimentally measuring the power change under different currents and performing data fitting.

[0077] δ is the weighting factor for multiple temperature sensors and is used to calculate the combined temperature from multiple sensor readings.

[0078] For example, different weights can be given to different sensors according to their relative positions and importance.

[0079] The current temperature T refers to a temperature value measured by multiple temperature sensors, which may be an average temperature or a reading of a specific sensor.

[0080] It should also be noted that the monitoring position of the comprehensive power is the output port, which mainly monitors the power of each output module of the power board, for example:

[0081] Output power of 12V AC / DC conversion circuit.

[0082] Output power of 12V DC / DC conversion circuit.

[0083] Output power of 5V and 3.3V step-down circuits.

[0084] Load: Monitors the power consumption of the load devices connected to the power board.

[0085] By measuring voltage (U) and current (I) in real time, the output power of each module can be calculated. The purpose of monitoring power is to ensure that each module operates within the rated power range and detect overload or fault in time.

[0086] The monitoring position of temperature monitoring is mainly the temperature of each key component and module inside the power board, such as the temperature of the transformer, rectifier and inductor, the temperature of the buck module (such as 5V and 3.3V buck circuit), the overall temperature of the power switch components and the circuit board.

[0087] Through multi-point temperature sensors, the temperature T at different locations is measured in real time. Temperature monitoring can help identify high-temperature areas so that appropriate cooling measures can be taken to prevent damage caused by overheating.

[0088] The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor MOV. The fuse is selected according to the rated output power and the minimum input voltage of the power supply. The rated output powers of 12V, 3.3V, 5V and -12V power supplies are respectively:

[0089] P 12V =120W,P 3.3V =52.8W,P 5V =125W,P -12V =10W

[0090] Under rated load, the efficiency of the 12V conversion circuit is η1 = 85%, the efficiency of the 3.3V and 5V conversion circuits is η2 = 90%, and the efficiency of the -12V conversion circuit is η3 = 85%;

[0091] The minimum value of AC power input is V inmin =187VAC, when the AC input voltage is 187VAC, the maximum input current is:

[0092]

[0093] The fuse model used in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current of 3A and a rated voltage of 300VAC. The two TVS tubes connected in series are SMCJ170CA.

[0094] The minimum value of the DC power input is 18V, then the maximum input current Imax=18.33A, the fuse model used in the DC input protection and filtering circuit is RR1032F003072, the rated current value is 30A, the rated voltage value is 72V, and the TVS tube model is SMCJ40CA;

[0095] The filter circuit includes a common mode inductor, a differential mode inductor, an X capacitor, a Y capacitor and a parallel resistor for discharging the X capacitor.

[0096] Among them, the output power requirement of the 12V AC / DC conversion circuit is 120W, and the 12V output voltage is used as the input of other conversion circuits. The total power requirement is 330W. The 12V AC / DC conversion circuit model uses the APL220W350T12SN module. The input voltage range of this module is 85VAC~264VAC, the output voltage is 12V, the substrate temperature range is -40℃~+100℃, the standard 1 / 2 brick package, the output power is 350W, and the conversion efficiency is 92% at full load. It has input over-voltage and under-voltage protection, output over-voltage protection, output short-circuit protection, and over-temperature protection.

[0097] Among them, the total output power requirement of the 12V DC / DC conversion circuit is 330W, and the model selected is the EQBS360-028S12NTB2L module. The input voltage range of the module is DC16V~40V, the output voltage is 12V, the substrate temperature range is -40℃~+100℃, the standard 1 / 4 brick package, the output power is 360W, and the conversion efficiency is 94% at full load. It has input over-voltage and under-voltage protection, output overvoltage protection, output short-circuit protection, and over-temperature protection.

[0098] Among them, the 5V step-down circuit converts the 12V DC voltage into a 5V output, which is used by the load after filtering. The model is the HCE4630ML module. The module adopts a BUCK topology structure to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. The two outputs have a maximum total output current of 30A and a size of 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0099] Among them, the 3.3V step-down circuit converts the 12V DC voltage into a 3.3V output, which is used by the load after filtering. The model is the HCE4620ML module. The module adopts a BUCK topology structure to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. The two outputs have a maximum output current of 13A and a size of 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0100] Among them, the -12V isolated DC / DC circuit model uses the HMA20DC18S12SN module, which is an isolated DC-DC conversion circuit that converts the input DC9V-36V into DC12V output, with an output power of 20W and a conversion efficiency of 87%.

[0101] Among them, the redundant circuit model uses a dedicated ORing controller XC4355DAA to control the conversion of two 12V power supplies into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

[0102] Among them, a current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V~48V.

[0103] Wherein, the universal power board circuit system also includes an output filter circuit, and the 5V step-down circuit and the 3.3V step-down circuit use a non-isolated converter;

[0104] The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV.

[0105] The 12V output has a CLC filter added after the current limiting circuit;

[0106] The universal power board circuit system also includes an anti-reverse connection circuit, which is composed of a switch composed of an NMOS tube, a gate of the NMOS tube is driven by a voltage pump, and the voltage pump is powered by a stable 12V power supply generated by an LDO.

[0107] In the present invention, the power P calculated based on the power monitoring results can be displayed in real time on the user interface, or stored in a data logger for further analysis.

[0108] If the monitored power is close to or exceeds the rated power of the device, it may indicate that the system is overloaded. If the difference between power output and input is large, it may indicate that the system is inefficient and there is energy loss.

[0109] If the power is overloaded, consider reducing the load or adjusting the operating mode to avoid damage.

[0110] Evaluate system design and component selection, consider more efficient power management schemes, or use more efficient power modules.

[0111] In high load situations, you can consider adding redundant power supplies to share the load.

[0112] The temperature monitoring result T can be used for real-time monitoring and trend analysis (such as the trend of temperature change over time) through data logging.

[0113] If the temperature exceeds the set safety threshold, it may indicate insufficient system cooling or a poor operating environment.

[0114] Continued high temperatures can cause component degradation and failure, affecting the long-term reliability of the system.

[0115] If the monitored temperature is too high, take cooling measures, such as enabling fans, adding heat sinks, or improving air flow.

[0116] Regularly check the cooling of critical components to ensure they are functioning properly and are not blocked by dust or other material.

[0117] If possible, improve the working environment by lowering the ambient temperature or increasing ventilation.

[0118] Combining the power and temperature monitoring results allows for a more comprehensive system analysis and assessment of the overall health of the power system.

[0119] If there is a mismatch between power and temperature (e.g., high power and low temperature, or low power and high temperature), it may indicate a poor system design or a component failure.

[0120] By analyzing the monitoring data, potential failures can be predicted and preventive maintenance can be performed.

[0121] If a module or component is found to be repeatedly overheating or overloading, repair or replacement should be considered to prevent failure.

[0122] Regularly analyze historical monitoring data to look for trends and patterns to make appropriate system adjustments and optimizations.

[0123] It should be noted that the computer-readable medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any computer readable medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0124] The computer-readable medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0125] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0126] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0127] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, limit the unit itself.

[0128] The above introduces the preferred embodiments of the present invention, which is intended to make the spirit of the present invention clearer and easier to understand, but is not intended to limit the present invention. All modifications, substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection outlined by the claims attached to the present invention.

Claims

1. A universal power board circuit system based on testability analysis, characterized in that: The universal power board circuit system includes a power module, an input protection and filtering circuit, a 12VAC / DC conversion circuit, a 12V DC / DC conversion circuit, a 5V step-down circuit, a 3.3V step-down circuit, a -12V isolated DC / DC circuit and a redundant circuit; The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection, the 12VAC / DC conversion circuit converts the AC voltage into a DC 12V voltage output, the 12V DC / DC conversion circuit realizes the conversion of the DC voltage into a DC 12V voltage output, the above two DC 12V voltages are combined into one way by the redundant circuit and then output, the 5V step-down circuit converts the 12V voltage into a 5V voltage output, the 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output, the -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output, the redundant circuit is a circuit for constructing N+1 redundant power supply, which adopts dual-way input and controls the N-type MOSFET through the ORing controller XC4355DAA to realize redundant power supply; Arranging m temperature sensors in the power module; The universal power board circuit system further comprises a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system; Performing power board testability analysis based on health management software, wherein the health management software consists of management software configuration items and assistance software configuration items; The management software configuration item obtains the voltage, current and temperature monitoring data of the power board circuit system through the I2C bus, obtains the PCIE acquisition data of the power board circuit system from the auxiliary software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to perform comprehensive power monitoring of each output terminal in the power board: The following formula is used for temperature monitoring: Among them, P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, α is the temperature attenuation coefficient, β is the current sensitivity coefficient, I th is the current threshold, S j is the jth temperature sensor reading, σ is the weighting coefficient.

2. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor MOV. The fuse is selected according to the rated output power and the minimum input voltage of the power supply. The fuse in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current value of 3A and a rated voltage value of 300VAC. The two TVS tubes connected in series are selected as SMCJ170CA. The minimum value of the DC power input is 18V, then the maximum input current Imax=18.33A, the fuse model used in the DC input protection and filtering circuit is RR1032F003072, the rated current value is 30A, the rated voltage value is 72V, and the TVS tube model is SMCJ40CA; The filter circuit includes a common mode inductor, a differential mode inductor, an X capacitor, a Y capacitor and a parallel resistor for discharging the X capacitor.

3. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The 12V AC / DC conversion circuit model uses the APL220W350T12SN module, which has an input voltage range of 85VAC to 264VAC, an output voltage of 12V, a substrate temperature range of -40℃ to +100℃, a standard 1 / 2 brick package, an output power of 350W, and a conversion efficiency of 92% at full load.

4. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The 12V DC / DC conversion circuit model uses the EQBS360-028S12NTB2L module, which has an input voltage range of DC16V~40V, an output voltage of 12V, a substrate temperature range of -40℃~+100℃, a standard 1 / 4 brick package, an output power of 360W, and a conversion efficiency of 94% at full load.

5. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The 5V step-down circuit converts 12V DC voltage into 5V output, which is then filtered for use by the load. The model used is the HCE4630ML module, which adopts the BUCK topology structure and converts the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum total output current of 30A and a size of 16mm*16mm*4.41mm.

6. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The 3.3V step-down circuit converts 12V DC voltage into 3.3V output, which is used by the load after filtering. The model is HCE4620ML module, which adopts BUCK topology to convert 4.5V~16V input voltage into 0.6V-5.3V output voltage. The specific output voltage value is set by external resistors. It has two outputs, with a maximum output current of 13A and a size of 16mm*16mm*4.41mm.

7. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The -12V isolated DC / DC circuit model uses the HMA20DC18S12SN module, which is an isolated DC-DC conversion circuit that converts the input DC9V-36V into a DC12V output with an output power of 20W and a conversion efficiency of 87%.

8. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The redundant circuit model controls two 12V power supplies to convert into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

9. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: A current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V to 48V.

10. A universal power board circuit system based on testability analysis as claimed in claim 1, characterized in that: The universal power board circuit system also includes an output filter circuit, a 5V step-down circuit and a 3.3V step-down circuit using a non-isolated converter; The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV. The 12V output has a CLC filter added after the current limiting circuit; The universal power board circuit system also includes an anti-reverse connection circuit, which is composed of a switch composed of an NMOS tube, a gate of the NMOS tube is driven by a voltage pump, and the voltage pump is powered by a stable 12V power supply generated by an LDO.

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