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CN-119618518-B - Liquid leakage detection method and device for liquid cooling server

CN119618518BCN 119618518 BCN119618518 BCN 119618518BCN-119618518-B

Abstract

The embodiment of the application provides a liquid leakage detection method of a liquid cooling server, which comprises the steps of obtaining a first signal output by a liquid leakage detection line, wherein the liquid leakage detection line is used for detecting the liquid leakage condition of cooling liquid in the liquid cooling server, the liquid leakage detection line is applied with an alternating current excitation signal, the first signal is the response of the liquid leakage detection line to the alternating current excitation signal, the first signal is subjected to separation processing through phase sensitive detection to obtain a first component and a second component, the first component is in phase with the first signal, the first component is used for reflecting the resistance change of the liquid leakage detection line, the second component is mutually perpendicular to the first component in phase and is used for reflecting the capacitance change of the liquid leakage detection line, and the liquid leakage detection result of the liquid cooling server is obtained according to the first component and the second component. The application solves the problem of lower accuracy of liquid leakage detection of the liquid cooling server, and further achieves the effect of improving the accuracy of liquid leakage detection of the liquid cooling server.

Inventors

  • LI CHENG

Assignees

  • 苏州元脑智能科技有限公司

Dates

Publication Date
20260508
Application Date
20241218

Claims (10)

  1. 1. The liquid leakage detection method of the liquid cooling server is characterized by comprising the following steps: Acquiring a first signal output by a liquid leakage detection line, wherein the liquid leakage detection line is used for detecting the liquid leakage condition of cooling liquid in a liquid cooling server, an alternating current excitation signal is applied to the liquid leakage detection line, and the first signal is the response of the liquid leakage detection line to the alternating current excitation signal; The first signal is separated through phase-sensitive detection to obtain a first component and a second component, wherein the first component is in phase with the first signal, the first component is used for reflecting the resistance change of the leakage detection line, the second component is mutually perpendicular to the first component in phase, and the second component is used for reflecting the capacitance change of the leakage detection line; And acquiring a liquid leakage detection result of the liquid cooling server according to the first component and the second component, wherein the liquid leakage detection result is used for indicating the liquid leakage condition of the cooling liquid in the liquid cooling server.
  2. 2. The method of claim 1, wherein the obtaining the liquid leakage detection result of the liquid cooling server according to the first component and the second component comprises: acquiring impedance changes corresponding to the leakage detection line according to the first component and the second component; and acquiring a liquid leakage detection result of the liquid cooling server according to the impedance change.
  3. 3. The method of claim 2, wherein the step of determining the position of the substrate comprises, Before the impedance change corresponding to the leakage detection line is obtained according to the first component and the second component, the method further includes: Obtaining a second signal output by a reference resistor, wherein the reference resistor is applied with the alternating current excitation signal, and the second signal is the response of the reference resistor to the alternating current excitation signal; Separating the second signal through the phase-sensitive detection to obtain a third component and a fourth component, wherein the third component is in phase with the second signal, the third component is used for reflecting the resistance change of the reference resistor, the fourth component is mutually perpendicular to the third component in phase, and the fourth component is used for reflecting the capacitance change of the reference resistor; The step of obtaining the impedance change corresponding to the leakage detection line according to the first component and the second component comprises obtaining the impedance change according to the first component, the second component, the third component and the fourth component.
  4. 4. A method according to claim 3, wherein said obtaining said impedance change from said first component, said second component, said third component and said fourth component comprises: the following steps are performed until the impedance change is obtained: Acquiring a first product between the first component and the third component at the current time; obtaining a second product between the second component and the fourth component at the current time; obtaining a third product between the second component and the third component at the current time; obtaining a fourth product between the first component and the fourth component at the current time; acquiring a difference value between the third product and the fourth product at the current time; Acquiring a complex number corresponding to the difference value in the current time; Acquiring a first sum value between the first product, the second product and the complex number at the current time; obtaining a second sum between the square of the third component and the square of the fourth component at the current time; Acquiring a first ratio between the first sum value and the second sum value at the current time; acquiring a third sum value between the resistance value of the reference resistor and the first ratio value at the current time, and determining the third sum value as the impedance of the leakage detection line at the current time; and determining the next time as the current time until a plurality of impedances under the whole time of the preset time range content are obtained, wherein the impedance change is used for representing the change condition of the plurality of impedances in the preset range content.
  5. 5. A method according to claim 3, wherein said obtaining said impedance change from said first component, said second component, said third component and said fourth component comprises: the following steps are performed until the impedance change is obtained: Acquiring a first product between the first component and the third component at the current time; obtaining a second product between the second component and the fourth component at the current time; obtaining a third product between the second component and the third component at the current time; obtaining a fourth product between the first component and the fourth component at the current time; acquiring a fourth sum value between the first product and the second product at the current time; obtaining a fifth sum value between the square of the third component and the square of the fourth component at the current time; acquiring a second ratio between the fourth sum and the fifth sum at the current time; obtaining a fifth product of the resistance value of the reference resistor at the current time and the second ratio, and determining the fifth product as the resistance value of the liquid leakage detection line at the current time; acquiring a difference value between the third product and the fourth product at the current time; Acquiring a third ratio between the fourth sum and the difference at the current time; obtaining a sixth product of the frequency of the alternating current excitation signal under the current time and the resistance value of the reference resistor; Acquiring a fourth ratio between the third ratio and the sixth product at the current time, and determining the fourth ratio as a capacitance value of the liquid leakage detection line at the current time; acquiring the impedance of the leakage detection line at the current time by combining the resistance value of the leakage detection line at the current time and the capacitance value of the leakage detection line at the current time; and determining the next time as the current time until a plurality of impedances under the whole time of the preset time range content are obtained, wherein the impedance change is used for representing the change condition of the plurality of impedances in the preset range content.
  6. 6. The method of claim 1, wherein the acquiring the first signal output by the weeping detection line comprises: And acquiring the first signal through an analog switch arranged on a signal output path of the liquid leakage detection line, wherein the analog switch is set to be in a half-turn-on period, and the first signal is an original signal output after the alternating current excitation signal is applied to the liquid leakage detection line and is obtained after the processing of the analog switch.
  7. 7. The method of claim 6, wherein the separating the first signal by phase sensitive detection to obtain a first component and a second component comprises: Calculating an average direct current voltage of the analog switch in the on state by setting a first starting time and a second starting time of the analog switch in the on state; Obtaining a real part of a sinusoidal vector and an imaginary part of the sinusoidal vector using the average direct current voltage, wherein the first signal is a representation of the sinusoidal vector; Constructing a complex coordinate system according to the real part of the sine vector and the imaginary part of the sine vector, wherein the real axis of the complex coordinate system is used for representing the real part of the sine vector, and the imaginary axis of the complex coordinate system is used for representing the imaginary part of the sine vector; The phase and the amplitude of the sine vector are obtained by utilizing a proportional constant through the quadrature detection principle; And separating two orthogonal components of the sinusoidal vector through the phase and the amplitude of the sinusoidal vector, wherein the two orthogonal components comprise the first component and the second component.
  8. 8. The method of claim 6, wherein the separating the first signal by phase sensitive detection to obtain a first component and a second component comprises: Sending two groups of square wave signals with 90-degree phase difference to the analog switch, wherein the frequency between the two groups of square wave signals with 90-degree phase difference is the same as that of the alternating current excitation signal; Multiplying the first signal and the two groups of square wave signals with 90 degrees phase difference respectively to obtain a first product signal and a second product signal, wherein the first product signal corresponds to the real part of a sine vector, the second product signal corresponds to the imaginary part of the sine vector, and the first signal is a representation form of the sine vector; and obtaining the first component according to the first product signal, and obtaining the second component according to the second product signal.
  9. 9. A computer readable storage medium, characterized in that a computer program is stored in the computer readable storage medium, wherein the computer program, when being executed by a processor, implements the steps of the method according to any of the claims 1 to 8.
  10. 10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any one of claims 1 to 8 when the computer program is executed.

Description

Liquid leakage detection method and device for liquid cooling server Technical Field The embodiment of the application relates to the field of computers, in particular to a liquid leakage detection method and device of a liquid cooling server. Background In the liquid leakage detection scenario of the liquid cooling server, a liquid leakage detection line to which a direct current excitation voltage is applied may be used, and when liquid leakage occurs, certain parameters of the liquid leakage detection line are changed to determine whether liquid leakage occurs. However, the polarization effect of the direct current voltage applied for a long time to the leakage detection line can cause accelerated aging of the leakage detection line, thereby affecting the detection effect of liquid leakage. In addition, the above-mentioned leakage detection method has insufficient sensitivity to leakage of a trace amount of liquid, especially in the early stage of leakage, and further causes a problem that the accuracy of leakage detection of the liquid cooling server is low. Therefore, the liquid-cooling server has a problem of low accuracy in detecting leakage. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the application provides a liquid leakage detection method and device of a liquid cooling server, which at least solve the problem of low liquid leakage detection accuracy of the liquid cooling server in the related art. According to one embodiment of the application, a liquid leakage detection method of a liquid cooling server is provided, and the liquid leakage detection method comprises the steps of obtaining a first signal output by a liquid leakage detection line, wherein the liquid leakage detection line is used for detecting liquid leakage conditions of cooling liquid in the liquid cooling server, the liquid leakage detection line is applied with an alternating current excitation signal, the first signal is response to the alternating current excitation signal by the liquid leakage detection line, separating the first signal through phase sensitive detection to obtain a first component and a second component, the first component is in phase with the first signal, the first component is used for reflecting resistance changes of the liquid leakage detection line, the second component is mutually perpendicular to the first component in phase, the second component is used for reflecting capacitance changes of the liquid leakage detection line, and a liquid leakage detection result of the liquid cooling server is obtained according to the first component and the second component, and the liquid leakage detection result is used for representing the liquid leakage conditions of the cooling liquid in the liquid cooling server. According to another embodiment of the application, a liquid leakage detection device of a liquid cooling server is provided, and the liquid leakage detection device comprises a first acquisition unit, a separation unit and a second acquisition unit, wherein the first acquisition unit is used for acquiring a first signal output by a liquid leakage detection line, the liquid leakage detection line is used for detecting liquid leakage condition of cooling liquid in the liquid cooling server, the first signal is a response of the liquid leakage detection line to the alternating current excitation signal, the separation unit is used for carrying out separation processing on the first signal through phase-sensitive detection to obtain a first component and a second component, the first component is in phase with the first signal, the first component is used for reflecting resistance change of the liquid leakage detection line, the second component is mutually perpendicular to the first component in phase and is used for reflecting capacitance change of the liquid leakage detection line, and the second acquisition unit is used for acquiring liquid leakage detection result of the liquid cooling server according to the first component and the second component, and the liquid leakage detection result is used for representing liquid leakage condition of the cooling liquid in the liquid cooling server. In an exemplary embodiment, the second obtaining unit includes a first obtaining module configured to obtain an impedance change corresponding to the liquid leakage detection line according to the first component and the second component, and a second obtaining module configured to obtain a liquid leakage detection result of the liquid cooling server according to the impedance change. In an exemplary embodiment, the device further comprises a third acquisition module for acquiring a second signal output by a reference resistor before acquiring the impedance change corresponding to the leakage detection line according to the first component and the second component, wherein the reference resistor is applied with the ac excitation s