A printed circuit board monitoring circuit, method and electronic device

Abstract

This application discloses a printed circuit board (PCB) monitoring circuit, method, and electronic device, relating to the field of server technology. The monitoring circuit includes a storage element and at least one voltage monitoring circuit. The input terminal of the voltage monitoring circuit is connected to the corresponding circuit under test (DUT) to obtain the voltage to be monitored in the DUT. The output terminal of the voltage monitoring circuit is connected to the storage element, which stores short-circuit information of the DUT. The voltage monitoring circuit includes a short-circuit isolation circuit, a first resistor, and a transistor. The output terminal of the voltage to be monitored is connected to the first resistor, which is connected to the base of the transistor. The transistor amplifies the analog voltage of the voltage to be monitored. The short-circuit isolation circuit isolates the storage element, allowing it to maintain normal operation during a short circuit. This application can record the location of the short circuit point when a short circuit occurs on a PCBA board.

Description

Technical Field

[0001] This application relates to the field of server technology, and in particular to a printed circuit board monitoring circuit, method, and electronic device. Background Technology

[0002] With the advancement of science and technology, servers and computers are now among the most frequently used tools in people's lives, supporting the operation of society as a whole. Mobile payment, mobile phone and computer communication, map navigation, and online office work all rely on the powerful computing capabilities of servers. Servers and terminal computers play a crucial role in people's lives. The launch of a mature server or terminal computer product requires repeated testing and verification by engineers. During R&D testing, hardware engineers test the signal and power quality of individual boards. Due to negligence or carelessness, board burn-out problems often occur. The cost of a single PCBA (Printed Circuit Board Assembly) is very high. Directly scrapping it would greatly increase R&D costs, causing material and company property losses, and placing greater pressure on environmental protection. The same situation occurs during after-sales maintenance. This meaningless consumption is a huge waste, increasing product R&D costs, creating additional burdens for enterprises, and also damaging the environment and wasting social resources. Saving these materials could create more wealth for enterprises and society, reduce waste, and lessen the burden on enterprises and society.

[0003] Currently, different voltage levels on PCBA boards are monitored directly using the ADC (Analog-to-Digital Converter) module of the BMC (Baseboard Management Controller). However, this method has the following drawbacks:

[0004] 1. Voltage fluctuations can only be monitored within a small range using the BMC's ADC module;

[0005] 2. When the PCBA board is short-circuited, the BMC will not be able to work properly and will therefore be unable to monitor the voltage.

[0006] 3. When a PCBA board is short-circuited and cannot be powered on normally, it is difficult to locate the short circuit point.

[0007] Therefore, accurately and quickly locating the short circuit point when a short circuit occurs on a PCBA board is a technical problem that urgently needs to be solved. Summary of the Invention

[0008] To address at least one of the problems mentioned in the background art, this application provides a printed circuit board monitoring circuit, method, and electronic device that can record the location of the short circuit point when a short circuit occurs on a PCBA board, so that relevant personnel can quickly locate the short circuit point and repair the PCBA by reading the record, thereby saving costs.

[0009] The specific technical solutions provided in this application are as follows:

[0010] In a first aspect, a printed circuit board monitoring circuit is provided, comprising:

[0011] The device includes a storage element and at least one voltage monitoring circuit. The input of the voltage monitoring circuit is connected to the corresponding circuit under test to obtain the voltage to be monitored of the circuit under test. The output of the voltage monitoring circuit is connected to the storage element, which is used to store short-circuit information of the circuit under test.

[0012] The voltage monitoring circuit includes a short-circuit isolation circuit, a first resistor, and a transistor;

[0013] The output terminal of the voltage to be monitored is connected to the first resistor, the first resistor is connected to the base of the transistor, and the transistor is used to amplify the analog voltage of the voltage to be monitored.

[0014] The short-circuit isolation circuit is used to isolate the storage element so that the storage element continues to function normally when short-circuited.

[0015] Furthermore, the voltage monitoring circuit also includes a Schmitt trigger;

[0016] The collector of the transistor is connected to the input terminal of the Schmitt trigger, and the output terminal of the Schmitt trigger is connected to the storage element.

[0017] The Schmitt trigger is used to convert the analog voltage of the voltage to be monitored into a digital value.

[0018] Furthermore, the short-circuit isolation circuit includes a charging and discharging circuit;

[0019] The charging and discharging circuit includes a first fuse. The input terminal of the charging and discharging circuit is connected to the circuit under test through the first fuse. The output terminal of the charging and discharging circuit is connected to the Schmitt trigger. The charging and discharging circuit is used to charge when no short circuit occurs and to discharge when a short circuit occurs to maintain the normal operation of the Schmitt trigger and the storage element when a short circuit occurs.

[0020] The output terminal of the charging and discharging circuit is also connected to the collector of the transistor.

[0021] Furthermore, the charging and discharging circuit includes one or more first capacitors. The output terminal of the voltage to be monitored is connected to one end of one or more first capacitors through the first fuse. The other end of the first capacitor is connected to the Schmitt trigger. The first capacitor is used to charge when no short circuit occurs and to discharge when a short circuit occurs to maintain the normal operation of the Schmitt trigger and the storage element during a short circuit.

[0022] Furthermore, the short-circuit isolation circuit also includes a voltage holding circuit;

[0023] The voltage holding circuit includes a second fuse, the input of which is connected to the circuit under test via the second fuse, the input of which is also connected to the Schmitt trigger, and the output of which is grounded. The voltage holding circuit is used to maintain the voltage in the event of a short circuit for comparison with the amplified analog voltage.

[0024] Furthermore, the voltage holding circuit includes one or more second capacitors. The output terminal of the voltage to be monitored is connected to the first terminal of one or more second capacitors through the second fuse. The first terminal of the second capacitor is also connected to the Schmitt trigger. The second terminal of the second capacitor is grounded. The second capacitor is used to maintain the voltage in the event of a short circuit for comparison with the amplified analog voltage.

[0025] Secondly, a circuit monitoring method utilizing the printed circuit board monitoring circuit is provided, comprising:

[0026] Connect one or more circuits under test;

[0027] In response to the server powering on, the storage element monitors the voltage to be monitored of the circuit under test corresponding to the voltage monitoring circuit in real time through one or more voltage monitoring circuits, and records the circuit status of each voltage monitoring circuit.

[0028] In response to detecting a short circuit in any of the voltage monitoring circuits, the storage element stores the short circuit information of the voltage monitoring circuit;

[0029] The short-circuit point corresponding to the voltage to be monitored is located based on the short-circuit information of the stored voltage monitoring circuit.

[0030] Furthermore, in response to detecting a short circuit in any of the voltage monitoring circuits, the storage element stores short-circuit information of the voltage monitoring circuit, including:

[0031] In response to detecting a short circuit in any of the voltage monitoring circuits, the Schmitt trigger of the voltage monitoring circuit compares the holding voltage and the voltage analog quantity to obtain a changing analog quantity. The Schmitt trigger then converts the changing analog quantity into a digital quantity and stores it as short circuit information of the voltage monitoring circuit.

[0032] Furthermore, the short-circuit information also includes circuit information corresponding to the circuit under test, and locating the short-circuit point corresponding to the voltage under test based on the stored short-circuit information of the voltage monitoring circuit further includes:

[0033] Based on the circuit information corresponding to the circuit under test, locate the corresponding circuit under test;

[0034] The short-circuit point of the corresponding circuit under test is located based on the short-circuit information of the stored voltage monitoring circuit.

[0035] Thirdly, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the circuit monitoring method when executing the computer program.

[0036] Fourthly, a computer-readable storage medium is provided, storing computer-executable instructions for performing the circuit monitoring method.

[0037] The embodiments of this application have the following beneficial effects:

[0038] This application provides a printed circuit board monitoring circuit, method, and electronic device. The voltage monitoring circuit can monitor the circuit status corresponding to the voltage to be detected. In the event of a short circuit, a short-circuit isolation circuit isolates the black box circuit from the short-circuited portion to prevent damage, while maintaining the normal operation of the storage element. This allows the short-circuit information stored in the storage element to be acquired, and subsequently displayed graphically using simulation software to locate the short-circuit point of the voltage to be monitored. This facilitates subsequent repair of the PCBA by relevant personnel quickly locating the short-circuit point from the records, thus saving costs. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This paper shows an overall circuit block diagram of the printed circuit board monitoring circuit provided in an embodiment of this application;

[0041] Figure 2 This document shows a general flowchart of a circuit monitoring method for a printed circuit board monitoring circuit provided in an embodiment of this application.

[0042] Figure 3 Exemplary systems that can be used to implement the various embodiments described in this application are shown. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] It should be understood that, in the description of this application, unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0045] It should also be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] Example 1

[0047] This application provides a printed circuit board monitoring circuit, referring to... Figure 1 ,include:

[0048] The circuit includes a storage element and at least one voltage monitoring circuit. The input of the voltage monitoring circuit is connected to the corresponding circuit under test to obtain the voltage to be monitored of the circuit under test. The output of the voltage monitoring circuit is connected to the storage element, which is used to store short-circuit information of the circuit under test.

[0049] The voltage monitoring circuit includes a short-circuit isolation circuit, a first resistor, and a transistor;

[0050] The output terminal of the voltage to be monitored is connected to the first resistor, which is connected to the base of the transistor. The transistor is used to amplify the analog voltage of the voltage to be monitored.

[0051] Short-circuit isolation circuits are used to isolate storage elements so that the storage elements continue to function normally when short-circuited.

[0052] Specifically, after the server is powered on, the storage element can monitor one or more corresponding voltages in real time through one or more voltage monitoring circuits. For example, the voltages to be monitored include V1, V2, ..., Vn. For each voltage, a corresponding voltage monitoring circuit monitors it and records the circuit state of each circuit. The input terminal of the voltage monitoring circuit is connected to the corresponding voltage to be monitored, and the output terminal is connected to the storage element. The voltage monitoring circuit includes a short-circuit isolation circuit, which isolates the black-box circuit from the short-circuited part in the event of a short circuit, thus preventing damage. This allows the storage element to maintain normal operation, ensuring that the information stored in the storage element can be retrieved and displayed intuitively through simulation software.

[0053] Specifically, the voltage to be monitored can be connected to a transistor through a high-value first resistor. The transistor can amplify the analog voltage of the voltage to be monitored, thereby amplifying the short-circuit current when a short circuit occurs, making it easier for the storage element to detect the short-circuit information of the voltage to be monitored.

[0054] In some implementations, the voltage monitoring circuit further includes a Schmitt trigger; the collector of the transistor is connected to the input of the Schmitt trigger, and the output of the Schmitt trigger is connected to a storage element; the Schmitt trigger is used to convert the analog voltage of the voltage to be monitored into a digital value.

[0055] Specifically, a Schmitt trigger has two stable states, but unlike a typical trigger, it uses a potential-triggered method, its state maintained by the input signal potential. For input signals with negative decreasing and positive increasing directions, the Schmitt trigger has different threshold voltages. By connecting the collector of a transistor to the Schmitt trigger, analog signals are converted to digital signals for recording. The Schmitt trigger is a comparator circuit containing positive feedback. For a standard Schmitt trigger, when the input voltage is higher than the positive threshold voltage, the output is high; when the input voltage is lower than the negative threshold voltage, the output is low; when the input is between the positive and negative threshold voltages, the output does not change. That is, the threshold voltages corresponding to the output flipping from a high level to a low level, or from a low level to a high level, are different. The output only changes when the input voltage changes sufficiently, hence the name "trigger." This double-threshold action is called hysteresis, indicating that the Schmitt trigger has memory. Schmitt triggers can be used as waveform shaping circuits to shape analog signal waveforms into square wave waveforms that can be processed by digital circuits.

[0056] In some embodiments, the short-circuit isolation circuit includes a charging and discharging circuit. This charging and discharging circuit includes a first fuse, the input of which is connected to the circuit under test (DUT) via the first fuse, and the output of which is connected to a Schmitt trigger. The charging and discharging circuit is used to charge the circuit when no short circuit occurs and to discharge the circuit when a short circuit occurs, maintaining the normal operation of the Schmitt trigger and storage elements during a short circuit. The output of the charging and discharging circuit is also connected to the collector of a transistor.

[0057] Specifically, when no short circuit occurs, the voltage charges the charging and discharging circuit. When a short circuit occurs, the acquired analog voltage increases, triggering the Schmitt trigger to flip its state, and the instantaneous large current blows the fuse. At this time, the charging and discharging circuit discharges to support the Schmitt trigger to continue working. The overall short-circuit isolation circuit can isolate the black box circuit from the short-circuited part to prevent damage during a short circuit, while maintaining the normal operation of the storage element. This allows the short-circuit information stored in the storage element to be acquired, so that the monitored short-circuit information can be graphically displayed through simulation software to locate the short-circuit point of the voltage to be monitored. Engineers can then repair the PCBA board based on the short-circuit point.

[0058] Specifically, the output of the charging and discharging circuit is also connected to the collector of the transistor, further amplifying the charging current of the charging and discharging circuit when short-circuited, so as to compare it with the holding voltage (V1, V2, ... Vn, etc.) held by the voltage holding circuit.

[0059] In some implementations, the short-circuit isolation circuit further includes a voltage holding circuit; the voltage holding circuit includes a second fuse, the input of the voltage holding circuit is connected to the circuit under test through the second fuse, the input of the voltage holding circuit is also connected to a Schmitt trigger, the output of the voltage holding circuit is grounded, and the voltage holding circuit is used to maintain the voltage in the event of a short circuit for comparison with an amplified analog voltage.

[0060] Specifically, when no short circuit occurs, the voltage charges the charging / discharging circuit and the voltage holding circuit. When a short circuit occurs, the acquired analog voltage increases, triggering the Schmitt trigger to flip its state, and the instantaneous large current blows the fuse. At this time, the charging / discharging circuit discharges to support the Schmitt trigger to continue working, and the voltage holding circuit maintains the voltage during the short circuit for comparison with the analog voltage amplified by the transistor. The overall short-circuit isolation circuit can isolate the black box circuit from the short-circuited part to prevent damage during a short circuit, while maintaining the normal operation of the storage element. This allows the short-circuit information stored in the storage element to be acquired, so that the monitored short-circuit information can be graphically displayed through simulation software to locate the short-circuit point of the voltage to be monitored. Engineers can then repair the PCBA board based on the short-circuit point.

[0061] In some embodiments, the charging and discharging circuit includes one or more first capacitors. The output terminal of the voltage to be monitored is connected to one end of one or more first capacitors via a first fuse. The other end of the first capacitor is connected to a Schmitt trigger. The first capacitor is used to charge when no short circuit occurs and to discharge when a short circuit occurs to maintain normal operation of the Schmitt trigger and the storage element during the short circuit.

[0062] In some implementations, the voltage holding circuit includes one or more second capacitors. The output of the voltage to be monitored is connected to the first terminal of one or more second capacitors via a second fuse. The first terminal of the second capacitor is also connected to a Schmitt trigger. The second terminal of the second capacitor is grounded. The second capacitor is used to maintain the voltage in the event of a short circuit for comparison with an amplified analog voltage.

[0063] Specifically, when no short circuit occurs, the voltage charges the first and second capacitors. When a short circuit occurs, the acquired analog voltage increases, triggering the Schmitt trigger to flip its state, and the instantaneous large current blows the fuse. At this time, the first capacitor discharges to support the continued operation of the Schmitt trigger, while the second capacitor maintains its voltage during the short circuit for comparison with the analog voltage amplified by the transistor. After the first and second fuses blow, the overall short-circuit isolation circuit isolates the black box circuit from the short-circuited part to prevent damage during a short circuit, while maintaining the normal operation of the storage element. The amplified analog voltage is compared with the maintaining voltage; a sufficiently large change in the input voltage describes the voltage surge phenomenon, converting the analog signal waveform into a digital quantity for recording.

[0064] In this embodiment, the voltage monitoring circuit can monitor the circuit status corresponding to the voltage to be detected. When a short circuit occurs, the short circuit isolation circuit can isolate the black box circuit from the short circuit to prevent damage, while maintaining the normal operation of the storage element. This allows the short circuit information stored in the storage element to be acquired, so that the monitored short circuit information can be graphically displayed through simulation software to locate the short circuit point of the voltage to be monitored. This facilitates the subsequent reading of records by relevant personnel to quickly locate the short circuit point and repair the PCBA, thereby saving costs.

[0065] It should be noted that the terms "S1," "S2," etc., are used only for descriptive purposes and do not specifically refer to the order or sequence, nor are they intended to limit this application. They are merely for the convenience of describing the method of this application and should not be construed as indicating the sequential order of the steps. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0066] Example 2

[0067] Corresponding to the above embodiments, this application also provides a circuit monitoring method using the above-described printed circuit board monitoring circuit, referring to... Figure 2 ,include:

[0068] S1. Connect one or more circuits under test;

[0069] S2. In response to the server power-on, the storage element monitors the voltage to be monitored of the circuit under test corresponding to the voltage monitoring circuit in real time through one or more voltage monitoring circuits, and records the circuit status of each voltage monitoring circuit.

[0070] S3. In response to detecting that the circuit state of any voltage monitoring circuit is short-circuited, the storage element stores the short-circuit information of the voltage monitoring circuit.

[0071] S4. Locate the short-circuit point corresponding to the voltage to be monitored based on the short-circuit information of the stored voltage monitoring circuit.

[0072] Specifically, after the server is powered on, the storage element can monitor one or more corresponding voltages in real time through one or more voltage monitoring circuits. For example, the voltages to be monitored include V1, V2, ..., Vn. For each voltage, a corresponding voltage monitoring circuit monitors it and records the circuit state of each circuit. The input terminal of the voltage monitoring circuit is connected to the corresponding voltage to be monitored, and the output terminal is connected to the storage element. The voltage monitoring circuit includes a short-circuit isolation circuit, which isolates the black-box circuit from the short-circuited part in the event of a short circuit, thus preventing damage. This allows the storage element to maintain normal operation, ensuring that the information stored in the storage element can be retrieved and displayed intuitively through simulation software.

[0073] In some implementations, S3 includes:

[0074] S31. In response to detecting that the circuit state of any voltage monitoring circuit is short-circuited, the Schmitt trigger of the voltage monitoring circuit compares the holding voltage and the voltage analog quantity to obtain the changing analog quantity. The Schmitt trigger converts the changing analog quantity into a digital quantity and stores it as short-circuit information of the voltage monitoring circuit.

[0075] Specifically, when no short circuit occurs, the voltage charges the charging / discharging circuit and the voltage holding circuit. When a short circuit occurs, the acquired analog voltage increases, triggering the Schmitt trigger to flip its state, and the instantaneous large current blows the fuse. At this time, the charging / discharging circuit discharges to support the Schmitt trigger to continue working, and the voltage holding circuit maintains the voltage during the short circuit for comparison with the analog voltage amplified by the transistor. The overall short-circuit isolation circuit can isolate the black box circuit from the short-circuited part to prevent damage during a short circuit, while maintaining the normal operation of the storage element. This allows the short-circuit information stored in the storage element to be acquired, so that the monitored short-circuit information can be graphically displayed through simulation software to locate the short-circuit point of the voltage to be monitored. Engineers can then repair the PCBA board based on the short-circuit point.

[0076] In some implementations, the short-circuit information also includes circuit information corresponding to the circuit under test. Based on this, S4 further includes:

[0077] S41. Based on the circuit information of the circuit under test, locate the corresponding circuit under test;

[0078] S42. Locate the short circuit point of the corresponding circuit under test based on the short circuit information of the stored voltage monitoring circuit.

[0079] Specifically, the short circuit can first be located based on the circuit information stored in the storage element. This circuit information may include the circuit number, circuit name, or circuit location. Then, the engineer or maintenance operator can locate the short circuit point in the circuit under test based on the short circuit information of the voltage monitoring circuit corresponding to the circuit under test stored in the storage element.

[0080] Example 3

[0081] Corresponding to the above embodiments, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor can implement the above-described circuit monitoring method when executing the program.

[0082] like Figure 3 As shown, in some embodiments, the system can serve as any of the aforementioned electronic devices for circuit monitoring methods in the various embodiments. In some embodiments, the system may include one or more computer-readable media (e.g., system memory or NVM / storage device) having instructions and one or more processors (e.g., one or more processors) coupled to the one or more computer-readable media and configured to execute the instructions to implement the module and thus perform the actions described in this application.

[0083] In one embodiment, the system control module may include any suitable interface controller to provide any suitable interface to at least one of the processors(s) and / or any suitable device or component communicating with the system control module.

[0084] The system control module may include a memory controller module to provide an interface to the system memory. The memory controller module may be a hardware module, a software module, and / or a firmware module.

[0085] System memory can be used, for example, to load and store data and / or instructions for the system. In one embodiment, system memory may include any suitable volatile memory, such as suitable DRAM. In some embodiments, system memory may include Double Data Rate Type Quad Synchronous Dynamic Random Access Memory (DDR4 SDRAM).

[0086] In one embodiment, the system control module may include one or more input / output (I / O) controllers to provide interfaces to the NVM / storage device and (one or more) communication interfaces.

[0087] For example, an NVM / storage device can be used to store data and / or instructions. An NVM / storage device may include any suitable non-volatile memory (e.g., flash memory) and / or may include any suitable (one or more) non-volatile storage devices (e.g., one or more hard disk drives (HDDs), one or more optical disc drives (CDs), and / or one or more digital universal optical disc (DVD) drives).

[0088] NVM / storage devices may include storage resources that are physically part of a device on which the system is mounted, or that can be accessed by the device without necessarily being part of it. For example, an NVM / storage device may be accessed over a network via one or more communication interfaces.

[0089] One or more communication interfaces may provide the system with an interface to communicate over one or more networks and / or with any other suitable device. The system may wirelessly communicate with one or more components of a wireless network in accordance with any of the standards and / or protocols in one or more wireless network standards and / or protocols.

[0090] In one embodiment, at least one of the processors may be logically packaged with one or more controllers of the system control module (e.g., a memory controller module). In one embodiment, at least one of the processors may be logically packaged with one or more controllers of the system control module to form a system-in-package (SiP). In one embodiment, at least one of the processors may be integrated with the logic of one or more controllers of the system control module on the same die. In one embodiment, at least one of the processors may be integrated with the logic of one or more controllers of the system control module on the same die to form a system-on-a-chip (SoC).

[0091] In various embodiments, the system may be, but is not limited to, a server, workstation, desktop computing device, or mobile computing device (e.g., laptop computing device, handheld computing device, tablet computer, netbook, etc.). In various embodiments, the system may have more or fewer components and / or different architectures. For example, in some embodiments, the system includes one or more cameras, a keyboard, a liquid crystal display (LCD) screen (including a touchscreen display), a non-volatile memory port, multiple antennas, a graphics chip, an application-specific integrated circuit (ASIC), and a speaker.

[0092] It should be noted that this application can be implemented in software and / or a combination of software and hardware, for example, using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In one embodiment, the software program of this application can be executed by a processor to implement the steps or functions described above. Similarly, the software program of this application (including related data structures) can be stored in a computer-readable recording medium, such as RAM memory, magnetic or optical drives, floppy disks, and similar devices. Furthermore, some steps or functions of this application can be implemented in hardware, for example, as circuitry that cooperates with a processor to perform the various steps or functions.

[0093] Furthermore, a portion of this application can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to this application through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0094] Communication media include media through which communication signals containing, for example, computer-readable instructions, data structures, program modules, or other data are transmitted from one system to another. Communication media can include guided transmission media (such as cables and wires (e.g., optical fibers, coaxial cables, etc.)) and wireless (unguided transmission) media capable of propagating energy waves, such as sound, electromagnetic, RF, microwave, and infrared. Computer-readable instructions, data structures, program modules, or other data can be embodied as modulated data signals in, for example, wireless media (such as carrier waves or similar mechanisms embodied as part of spread spectrum technology). The term "modulated data signal" refers to a signal whose one or more characteristics are altered or set in a manner that encodes information in the signal. Modulation can be analog, digital, or a hybrid modulation technique.

[0095] Herein, one embodiment of this application includes an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the apparatus is triggered to run a method and / or technical solution based on the foregoing embodiments of this application.

[0096] Example 4

[0097] Corresponding to the above embodiments, this application also provides a computer-readable storage medium storing computer-executable instructions for executing a circuit monitoring method.

[0098] In this embodiment, a computer-readable storage medium may include volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. For example, a computer-readable storage medium includes, but is not limited to, volatile memories such as random access memory (RAM, DRAM, SRAM); and non-volatile memories such as flash memory, various read-only memories (ROM, PROM, EPROM, EEPROM), magnetic and ferromagnetic / ferroelectric memories (MRAM, FeRAM); and magnetic and optical storage devices (hard disks, magnetic tapes, CDs, DVDs); or other currently known media or those developed hereafter capable of storing computer-readable information / data for use by a computer system.

[0099] Although preferred embodiments have been described in this application, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0100] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A printed circuit board monitoring circuit, characterized in that, include: The device includes a storage element and at least one voltage monitoring circuit. The input of the voltage monitoring circuit is connected to the corresponding circuit under test to obtain the voltage to be monitored of the circuit under test. The output of the voltage monitoring circuit is connected to the storage element, which is used to store short-circuit information of the circuit under test. The voltage monitoring circuit includes a short-circuit isolation circuit, a first resistor, a transistor, and a Schmitt trigger; In this circuit, the output terminal of the circuit under test is connected to one end of the first resistor, the other end of the first resistor is connected to the base of the transistor, the transistor is used to amplify the analog voltage of the voltage to be monitored, the collector of the transistor is connected to the input terminal of the Schmitt trigger, and the output terminal of the Schmitt trigger is connected to the storage element; the Schmitt trigger is used to convert the analog voltage of the voltage to be monitored into a digital value. The short-circuit isolation circuit is used to isolate the storage element so that the storage element continues to operate normally when short-circuited. The short-circuit isolation circuit includes a charging and discharging circuit, which includes a first fuse and one or more first capacitors. The input terminal of the charging and discharging circuit is connected to the circuit under test through the first fuse, and the output terminal of the charging and discharging circuit is connected to the Schmitt trigger and the collector of the transistor. The output terminal of the circuit under test is connected to one end of one or more of the first capacitors through the first fuse. The other end of the first capacitor is connected to the Schmitt trigger. The first capacitor is used to charge when no short circuit occurs and to discharge when a short circuit occurs to maintain the normal operation of the Schmitt trigger and the storage element during the short circuit.

2. The printed circuit board monitoring circuit according to claim 1, characterized in that, The short-circuit isolation circuit also includes a voltage holding circuit; The voltage holding circuit includes a second fuse. The input of the voltage holding circuit is connected to the circuit under test through one end of the second fuse, and the other end of the second fuse is connected to the Schmitt trigger. The voltage holding circuit is used to maintain the voltage in the event of a short circuit for comparison with the amplified analog voltage.

3. The printed circuit board monitoring circuit according to claim 2, characterized in that, The voltage holding circuit further includes one or more second capacitors. The output terminal of the circuit under test is connected to the first terminal of one or more second capacitors through the second fuse. The first terminal of the second capacitor is also connected to the Schmitt trigger. The second terminal of the second capacitor is grounded. The second capacitor is used to maintain the voltage in the event of a short circuit for comparison with the amplified analog voltage.

4. A circuit monitoring method utilizing the printed circuit board monitoring circuit according to any one of claims 1 to 3, characterized in that, include: Connect one or more circuits under test; In response to the server powering on, the storage element monitors the voltage to be monitored of the circuit under test corresponding to the voltage monitoring circuit in real time through one or more voltage monitoring circuits, and records the circuit status of each voltage monitoring circuit. In response to detecting a short circuit in any of the voltage monitoring circuits, the storage element stores the short circuit information of the voltage monitoring circuit; The short-circuit point corresponding to the voltage to be monitored is located based on the short-circuit information of the stored voltage monitoring circuit.

5. The circuit monitoring method according to claim 4, characterized in that, In response to detecting a short circuit in any of the voltage monitoring circuits, the storage element stores short circuit information of the voltage monitoring circuit, including: In response to detecting a short circuit in any of the voltage monitoring circuits, the Schmitt trigger of the voltage monitoring circuit compares the holding voltage and the voltage analog quantity to obtain a changing analog quantity. The Schmitt trigger then converts the changing analog quantity into a digital quantity and stores it as short circuit information of the voltage monitoring circuit.

6. The circuit monitoring method according to claim 4, characterized in that, The short-circuit information includes circuit information corresponding to the circuit under test. Locating the short-circuit point corresponding to the voltage under test based on the stored short-circuit information of the voltage monitoring circuit includes: Based on the circuit information corresponding to the circuit under test, locate the corresponding circuit under test; The short-circuit point of the corresponding circuit under test is located based on the short-circuit information of the stored voltage monitoring circuit.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the circuit monitoring method as described in any one of claims 4 to 6.

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