System applied to server single board for detecting hardware short circuit

Abstract

The invention belongs to the technical field of integrated circuit design, and particularly relates to a system applied to server single board hardware short circuit detection, which comprises a signal acquisition module, a detection chip and an MCU control module, and is characterized in that the signal acquisition module is connected with the detection chip, and the signal acquisition module and the detection chip are both connected with the MCU control module; the detection chip comprises a signal analysis module, the signal acquisition module is used for acquiring current signals at each to-be-detected point and transmitting the current signals to the signal analysis module, the signal analysis module is used for analyzing the received current signals and judging whether a short circuit condition exists or not, and if yes, the signal analysis module is used for outputting the short circuit condition. If yes, positioning is carried out on the short circuit condition to obtain the short circuit position, and the MCU control module is used for controlling the signal acquisition module and the detection chip to be turned on and turned off. According to the structure, automatic, rapid and accurate positioning of the hardware short circuit in the server single board can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated circuit design, and particularly relates to a system for detecting hardware short circuits on a server single board. Background Art

[0002] Currently, due to the routing or processing of single board designs, short circuits on circuit boards are extremely common. In the prior art, visual inspection of components, solder joints, and circuits on the circuit board is used to find possible short circuits, and a multimeter is used to measure resistance and voltage to find short circuit points or thermal imaging detection, etc. to find short circuit points. This method of detecting hardware short circuits is time-consuming and laborious, and the accuracy of the detection results is relatively low.

[0003] Therefore, how to improve the hardware short circuit process in the server single board in the prior art to achieve automatic, fast, and accurate positioning of hardware short circuits in the server single board is a technical problem that urgently needs to be solved at present. Summary of the Invention

[0004] The purpose of the present invention is to provide a system for detecting hardware short circuits on a server single board, which is used to improve the hardware short circuit process in the server single board in the prior art to achieve automatic, fast, and accurate positioning of hardware short circuits in the server single board.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A system for detecting hardware short circuits on a server single board includes a signal acquisition module, a detection chip, and an MCU control module. The signal acquisition module is connected to the detection chip, and both the signal acquisition module and the detection chip are connected to the MCU control module;

[0007] The detection chip includes a signal analysis module. The signal acquisition module is used to collect current signals at each point to be measured and transmit the current signals to the signal analysis module. The signal analysis module is used to analyze the received current signals to determine whether there is a short circuit situation. If so, it locates the short circuit situation to obtain the short circuit position. The MCU control module is used to control the start and stop of the signal acquisition module and the detection chip.

[0008] Preferably, the signal acquisition module includes a signal acquisition circuit, and the signal acquisition circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first operational amplifier, and a triode;

[0009] The positive voltage input terminal is respectively connected to one end of the first resistor and the second resistor. The other end of the first resistor is respectively connected to the load and the third resistor, and the load is grounded;

[0010] The second resistor is connected to the non-inverting input terminal of the first operational amplifier, the third resistor is connected to the inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to the base of the triode, the emitter of the triode is respectively connected to the fourth resistor and the signal output terminal, the collector of the triode is connected to the second resistor, and the fourth resistor is grounded.

[0011] Preferably, the triode is an NPN type triode.

[0012] Preferably, the signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each measurement point collected by the signal acquisition module; the signal analysis module is used to analyze based on the processed current signals and determine whether there is a short circuit in each measurement point. If so, then perform a location analysis on the processed current signals, obtain the location of the measurement point with a short circuit, and transmit the obtained location information of the measurement point with a short circuit to the MCU control module.

[0013] Preferably, the process of the signal processing module processing the current signals at each measurement point collected by the signal acquisition module is as follows:

[0014] Detect the frequencies of the current signals at each measurement point collected, and retain the current signals with a preset frequency, and filter out the frequencies of other interference signals;

[0015] Convert the current signals with the interference frequency signals filtered out, and convert the current signals into digital signals.

[0016] Preferably, the process of converting the current signals into digital signals is as follows:

[0017] Extract and record the analog signals of the current signals at preset time intervals, and the frequency of the extracted signals is greater than or equal to twice the highest frequency of the input current signals;

[0018] Divide the amplitude values of the analog signals of the extracted current signals into multiple levels, and map each extracted value to the nearest quantization level to obtain the corresponding discrete pulse sequence, and then convert the discrete pulse sequence into a binary code to obtain the corresponding digital signal.

[0019] Preferably, the specific process of the signal analysis module analyzing the converted digital signals is as follows:

[0020] The signal analysis module is preset with the current change data in case of a short circuit. The signal analysis module obtains the digital signal of the real-time acquired current signal, and acquires the real-time current change data, and matches it with the preset current change data in case of a short circuit to determine whether a circuit short circuit occurs. If so, the acquisition point information of the current data is reversely obtained according to the corresponding current data, and the short circuit location is obtained according to the acquisition point information.

[0021] Preferably, it further includes a short circuit protection module. The short circuit protection module is connected to the MCU control module. The signal analysis module sends the obtained short circuit location information to the MCU control module, and the MCU control module starts the short circuit protection module according to the short circuit location information.

[0022] Preferably, the short circuit protection module includes a short circuit protection circuit. The short circuit protection circuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a diode, a capacitor, a second operational amplifier, and a third operational amplifier;

[0023] The fifth resistor is connected to the voltage input terminal, and the other end of the fifth resistor is respectively connected to the positive input terminal of the second operational amplifier, the sixth resistor, the eighth resistor, the ninth resistor, and the tenth resistor;

[0024] The sixth resistor is grounded through the seventh resistor. The eighth resistor is connected to the reverse input terminal of the second operational amplifier, and the ninth resistor is connected to the positive input terminal of the third operational amplifier;

[0025] The tenth resistor is connected to the positive electrode of the diode, and the capacitor is respectively connected to the second operational amplifier and the ground.

[0026] The beneficial effects of the present invention include:

[0027] The system for detecting hardware short circuits in server single boards provided by the present invention includes a signal acquisition module, a detection chip, and an MCU control module. The signal acquisition module is connected to the detection chip, and both the signal acquisition module and the detection chip are connected to the MCU control module; the detection chip includes a signal analysis module. The signal acquisition module is used to collect the current signals at each point to be measured and transmit the current signals to the signal analysis module. The signal analysis module is used to analyze the received current signals to determine whether there is a short circuit situation. If so, the short circuit situation is located to obtain the short circuit position. The MCU control module is used to control the startup and shutdown of the signal acquisition module and the detection chip. The above structure can realize automatic, fast and accurate positioning of hardware short circuits in server single boards.

[0028] First, by setting up a signal acquisition circuit, the positive voltage input terminal is connected to one end of the first resistor and the second resistor respectively. The other end of the first resistor is connected to the load and the third resistor respectively, and the load is grounded. The second resistor is connected to the non-inverting input terminal of the first operational amplifier, the third resistor is connected to the inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to the base of the triode, the emitter of the triode is connected to the fourth resistor and the signal output terminal respectively, the collector of the triode is connected to the second resistor, and the fourth resistor is grounded. Such a circuit structure can realize the acquisition of current data at the measurement point, providing an effective data basis for the subsequent signal analysis module to conduct short-circuit analysis.

[0029] Secondly, the signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each measurement point collected by the signal acquisition module. The signal analysis module is used to analyze based on the processed current signals and determine whether there is a short-circuit situation among the measurement points. If so, it further conducts a positioning analysis based on the processed current signals to obtain the positions of the measurement points with short-circuit situations, and transmits the obtained position information of the measurement points with short-circuit situations to the MCU control module, realizing accurate short-circuit analysis based on current data and being able to locate the short-circuit, providing an accurate position for subsequent short-circuit processing and facilitating the quick and efficient implementation of short-circuit processing.

[0030] Finally, the short-circuit protection module is set to include a short-circuit protection circuit. The fifth resistor is connected to the voltage input terminal, and the other end of the fifth resistor is connected to the non-inverting input terminal of the second operational amplifier, the sixth resistor, the eighth resistor, the ninth resistor, and the tenth resistor respectively. The sixth resistor is grounded through the seventh resistor, the eighth resistor is connected to the inverting input terminal of the second operational amplifier, and the ninth resistor is connected to the non-inverting input terminal of the third operational amplifier. The tenth resistor is connected to the positive electrode of the diode, and the capacitor is connected to the second operational amplifier and grounded respectively, realizing timely protection processing when a short-circuit occurs and ensuring the effective protection of the load and other electronic devices in the circuit. Brief Description of the Drawings

[0031] Figure 1 It is a schematic circuit diagram of the signal acquisition module of the present invention.

[0032] Figure 2 It is a schematic circuit diagram of the short-circuit protection module of the present invention.

[0033] Reference numerals: R1 is the first resistor, R2 is the second resistor, R3 is the third resistor, R4 is the fourth resistor, P1 is the first operational amplifier, Q is the triode, R5 is the fifth resistor, R6 is the sixth resistor, R7 is the seventh resistor, R8 is the eighth resistor, R9 is the ninth resistor, R10 is the tenth resistor, D is the diode, C is the capacitor, P2 is the second operational amplifier, and P3 is the third operational amplifier. Detailed implementation mode

[0034] The following will further elaborate on the present invention in conjunction with the attached Figures 1 to 2 drawings:

[0035] Embodiment 1

[0036] A system for detecting hardware short circuits in server single boards includes a signal acquisition module, a detection chip, and an MCU control module. The signal acquisition module is connected to the detection chip, and both the signal acquisition module and the detection chip are connected to the MCU control module;

[0037] The detection chip includes a signal analysis module. The signal acquisition module is used to collect the current signals at each point to be measured and transmit the current signals to the signal analysis module. The signal analysis module is used to analyze the received current signals to determine whether there is a short circuit. If so, it locates the short circuit to obtain the short circuit position. The MCU control module is used to control the startup and shutdown of the signal acquisition module and the detection chip.

[0038] Embodiment 2

[0039] Based on Embodiment 1, the signal acquisition module includes a signal acquisition circuit. As shown in Figure 1 , the signal acquisition circuit includes the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the first operational amplifier P1, and the triode Q. The positive voltage input terminal is respectively connected to one end of the first resistor R1 and the second resistor R2. The other end of the first resistor R1 is respectively connected to the load and the third resistor R3, and the load is grounded. The second resistor R2 is connected to the non-inverting input terminal of the first operational amplifier P1. The third resistor R3 is connected to the inverting input terminal of the first operational amplifier P1. The output terminal of the first operational amplifier P1 is connected to the base of the triode Q. The emitter of the triode Q is respectively connected to the fourth resistor R4 and the signal output terminal. The collector of the triode Q is connected to the second resistor R2. The fourth resistor R4 is grounded. The triode Q is an NPN type triode Q.

[0040] In this embodiment, the working principle of the signal acquisition module is as follows: the voltage at the output terminal of the first operational amplifier P1 increases, and the increased voltage is applied to the base of the triode Q. The collector of the triode Q is in-phase output and applied to the non-inverting input terminal of the first operational amplifier P1, causing the output terminal of the first operational amplifier P1 to decrease. At this time, virtual short-circuit is established, so the voltage drop across the fourth resistor R4 is equal to the voltage drop across the first resistor R1, and the current flowing through the second resistor R2 is equal to the current flowing through the fourth resistor R4, realizing the acquisition of the current signal. Therefore, through the circuit structure of the above signal acquisition module, the acquisition of the current data at the measurement point can be realized, providing an effective data basis for the subsequent signal analysis module to perform short-circuit analysis.

[0041] Embodiment 3

[0042] Based on Embodiment 1 or Embodiment 2, the signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each measurement point collected by the signal acquisition module; the signal analysis module is used to analyze based on the processed current signals and judge whether there is a short-circuit situation at each measurement point. If so, then perform location analysis based on the processed current signals, obtain the positions of the measurement points with short-circuit situations, and transmit the obtained position information of the measurement points with short-circuit situations to the MCU control module.

[0043] The process of the signal processing module processing the current signals at each measurement point collected by the signal acquisition module is as follows:

[0044] Detect the frequencies of the current signals at each measurement point collected, and retain the current signals with a preset frequency, and filter out the frequencies of other interference signals, effectively avoiding the interference of the interference signals on the subsequent signal analysis and improving the accuracy of the final short-circuit analysis result.

[0045] Convert the current signal after filtering out the interference frequency signal, and convert the current signal into a digital signal.

[0046] The process of converting the current signal into a digital signal is as follows:

[0047] Extract and record the analog signal of the current signal at a preset time interval, and the frequency of the extracted signal is greater than or equal to twice the highest frequency of the input current signal;

[0048] Divide the amplitude values of the analog signals of the extracted current signals into multiple levels, and map each extracted value to the nearest quantization level to obtain the corresponding discrete pulse sequence, and then convert the discrete pulse sequence into a binary code to obtain the corresponding digital signal.

[0049] In this embodiment, the specific process of the signal analysis module analyzing the converted digital signal is as follows:

[0050] The signal analysis module is preset with current change data in case of a short circuit. The signal analysis module acquires the digital signal of the current signal in real time, obtains the real-time current change data, matches it with the preset current change data in case of a short circuit, and determines whether a circuit short circuit occurs. If so, it reversely obtains the acquisition point information of the current data according to the corresponding current data, and obtains the short circuit location according to the acquisition point information.

[0051] The signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each measurement point collected by the signal acquisition module; the signal analysis module is used to analyze based on the processed current signals, and determine whether there is a short circuit in each measurement point. If so, it further performs a positioning analysis on the processed current signals, obtains the position of the measurement point with a short circuit, and transmits the obtained position information of the measurement point with a short circuit to the MCU control module, realizing accurate analysis of the short circuit based on the current data, and being able to realize the positioning of the short circuit, providing an accurate position for subsequent short circuit processing, and facilitating the quick and efficient implementation of short circuit processing.

[0052] Embodiment 4

[0053] Based on Embodiment 1 or Embodiment 2 or Embodiment 3, it further includes a short circuit protection module. The short circuit protection module is connected to the MCU control module. The signal analysis module sends the obtained short circuit location information to the MCU control module, and the MCU control module starts the short circuit protection module according to the short circuit location information.

[0054] The short circuit protection module includes a short circuit protection circuit. See Figure 2As shown in the figure, the short - circuit protection circuit includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a diode D, a capacitor C, a second operational amplifier P2, and a third operational amplifier P3; the fifth resistor R5 is connected to the voltage input terminal, and the other end of the fifth resistor R5 is respectively connected to the non - inverting input terminal of the second operational amplifier P2, the sixth resistor R6, the eighth resistor R8, the ninth resistor R9, and the tenth resistor R10; the sixth resistor R6 is grounded through the seventh resistor R7, the eighth resistor R8 is connected to the inverting input terminal of the second operational amplifier P2, and the ninth resistor R9 is connected to the non - inverting input terminal of the third operational amplifier P3; the tenth resistor R10 is connected to the positive electrode of the diode D, and the capacitor C is respectively connected to the second operational amplifier P2 and ground. The short - circuit protection module is provided with a short - circuit protection circuit, which realizes timely protection processing when a short - circuit occurs, ensuring effective protection of the load and other electronic devices in the circuit.

[0055] In summary, the system for detecting hardware short - circuits on a server single - board provided by the present invention includes a signal acquisition module, a detection chip, and an MCU control module. The signal acquisition module is connected to the detection chip, and both the signal acquisition module and the detection chip are connected to the MCU control module; the detection chip includes a signal analysis module. The signal acquisition module is used to collect the current signals at each point to be measured and transmit the current signals to the signal analysis module. The signal analysis module is used to analyze the received current signals to determine whether there is a short - circuit situation. If so, it locates the short - circuit position for the short - circuit situation. The MCU control module is used to control the start and stop of the signal acquisition module and the detection chip. The above structure can realize automatic, fast, and accurate positioning of hardware short - circuits in the server single - board.

[0056] By setting up a signal acquisition circuit, the positive voltage input terminal is connected to one end of the first resistor R1 and the second resistor R2 respectively. The other end of the first resistor R1 is connected to the load and the third resistor R3 respectively, and the load is grounded. The second resistor R2 is connected to the non-inverting input terminal of the first operational amplifier P1, and the third resistor R3 is connected to the inverting input terminal of the first operational amplifier P1. The output terminal of the first operational amplifier P1 is connected to the base of the triode Q. The emitter of the triode Q is connected to the fourth resistor R4 and the signal output terminal respectively, and the collector of the triode Q is connected to the second resistor R2. The fourth resistor R4 is grounded. This circuit structure can realize the acquisition of current data at the measurement point, providing an effective data basis for the subsequent signal analysis module to perform short-circuit analysis. The signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each measurement point collected by the signal acquisition module. The signal analysis module is used to analyze based on the processed current signals and judge whether there is a short-circuit situation among the measurement points. If so, then perform a positioning analysis based on the processed current signals to obtain the position of the measurement point with a short-circuit situation, and transmit the obtained position information of the measurement point with a short-circuit situation to the MCU control module, realizing accurate short-circuit analysis based on current data and being able to locate the short-circuit, providing an accurate position for subsequent short-circuit processing and facilitating the rapid and efficient implementation of short-circuit processing. The short-circuit protection module is set up to include a short-circuit protection circuit. The fifth resistor R5 is connected to the voltage input terminal. The other end of the fifth resistor R5 is connected to the non-inverting input terminal of the second operational amplifier P2, the sixth resistor R6, the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10 respectively. The sixth resistor R6 is grounded through the seventh resistor R7. The eighth resistor R8 is connected to the inverting input terminal of the second operational amplifier P2. The ninth resistor R9 is connected to the non-inverting input terminal of the third operational amplifier P3. The tenth resistor R10 is connected to the positive electrode of the diode D. The capacitor C is connected to the second operational amplifier P2 and the ground respectively, realizing timely protection processing when a short-circuit occurs and ensuring the effective protection of the load and other electronic devices in the circuit.

Claims

1. A system for detecting hardware short circuits on a server board, characterized in that: It includes a signal acquisition module, a detection chip, and an MCU control module, wherein the signal acquisition module is connected to the detection chip, and both the signal acquisition module and the detection chip are connected to the MCU control module; The detection chip includes a signal analysis module, the signal acquisition module is used to collect current signals at each point to be tested, and transmit the current signals to the signal analysis module, the signal analysis module is used to analyze the received current signals to determine whether there is a short circuit, and if so, locate the short circuit to obtain the short circuit position, and the MCU control module is used to control the start and stop of the signal acquisition module and the detection chip.

2. A system for detecting hardware short circuits on a server board according to claim 1, characterized in that: The signal acquisition module includes a signal acquisition circuit, and the signal acquisition circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first operational amplifier, and a triode; The positive voltage input terminal is connected to one end of the first resistor and the second resistor respectively, the other end of the first resistor is connected to the load and the third resistor respectively, and the load is grounded; The second resistor is connected to the non-inverting input terminal of the first operational amplifier, the third resistor is connected to the inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to the base of the transistor, the emitter of the transistor is respectively connected to the fourth resistor and the signal output terminal, the collector of the transistor is connected to the second resistor, and the fourth resistor is grounded.

3. A system for detecting hardware short circuits on a server board according to claim 2, characterized in that: The transistor is an NPN transistor.

4. The system for detecting hardware short circuit in a server board according to claim 1, characterized in that: The signal analysis module includes a signal processing module and a signal analysis module. The signal processing module is connected to the signal analysis module. The signal processing module is used to process the current signals at each test point collected by the signal acquisition module; the signal analysis module is used to analyze based on the processed current signals and determine whether there is a short circuit in each test point. If so, perform positioning analysis based on the processed current signals to obtain the position of the test point with a short circuit, and transmit the obtained position information of the test point with a short circuit to the MCU control module.

5. A system for detecting hardware short circuits on a server board according to claim 4, characterized in that: The process of the signal processing module processing the current signal at each test point collected by the signal collection module is as follows: The frequencies of the current signals collected at each test point are detected, and the current signals with preset frequencies are retained, and other interfering signal frequencies are filtered out; The current signal with the interference frequency signal filtered out is converted into a digital signal.

6. A system for detecting hardware short circuits in a server board according to claim 5, characterized in that: The process of converting the current signal into a digital signal is as follows: Extracting and recording the analog signal of the current signal at a preset time interval, wherein the frequency of the extracted signal is greater than or equal to twice the highest frequency of the input current signal; The amplitude value of the analog signal of the extracted current signal is divided into multiple levels, and each extracted value is mapped to the nearest quantization level to obtain a corresponding discrete pulse sequence, and then the discrete pulse sequence is converted into a binary code to obtain a corresponding digital signal.

7. The system for detecting hardware short circuit in a server board according to claim 1, characterized in that: The specific process of the signal analysis module analyzing the converted digital signal is as follows: The signal analysis module is preset with current change data under short-circuit conditions. The signal analysis module obtains the real-time current change data based on the digital signal of the current signal obtained in real time, matches it with the current change data under the preset short-circuit conditions, and determines whether a circuit short circuit occurs. If so, the collection point information of the current data is reversely obtained based on the corresponding current data, and the short circuit location is obtained based on the collection point information.

8. The method for detecting hardware short circuit in a server board according to claim 7, characterized in that: It also includes a short-circuit protection module, which is connected to the MCU control module. The signal analysis module sends the acquired short-circuit locating information to the MCU control module, and the MCU control module starts the short-circuit protection module according to the short-circuit locating information.

9. The method for detecting hardware short circuit in a server board according to claim 1, characterized in that: The short-circuit protection module includes a short-circuit protection circuit, and the short-circuit protection circuit includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a diode, a capacitor, a second operational amplifier, and a third operational amplifier; The fifth resistor is connected to the voltage input terminal, and the other end of the fifth resistor is respectively connected to the non-inverting input terminal of the second operational amplifier, the sixth resistor, the eighth resistor, the ninth resistor and the tenth resistor; The sixth resistor is grounded through the seventh resistor, the eighth resistor is connected to the inverting input terminal of the second operational amplifier, and the ninth resistor is connected to the non-inverting input terminal of the third operational amplifier; The tenth resistor is connected to the anode of the diode, and the capacitor is respectively connected to the second operational amplifier and the ground.

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