A server cabinet liquid leakage detection device and a liquid leakage detection method thereof

Abstract

The application discloses a kind of server cabinet liquid leakage detection device and its liquid leakage detection method, it is related to server technical field, including: located in the cabinet inside cabinet management controller and power supply frame;Cabinet management controller and power supply frame are docked by respective electrical connection interface parts;Cabinet management controller is connected by the line for transmitting liquid leakage detection signal with the connector on power supply frame;Connector is connected with liquid leakage detection cable;Liquid leakage detection cable is set on the pipeline of refrigerant transmission;Series resistance is provided on liquid leakage detection cable;Series resistance is used to adjust the voltage division ratio of liquid leakage detection signal, so that cabinet management controller determines fault type according to the liquid leakage detection signal obtained.This can greatly simplify the component quantity of server cabinet liquid leakage detection, save cost, can efficiently, accurately distinguish different fault types, realize real-time reliable monitoring to refrigerant pipeline leakage situation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of servers, in particular to a server cabinet liquid leakage detection device and a liquid leakage detection method thereof. BACKGROUND

[0002] In a server, multiple high-power components need to be liquid-cooled for heat dissipation. Usually, an external device provides cooling liquid for the cabinet, so a liquid leakage detection scheme must be provided. The traditional server liquid leakage detection scheme is that a control module is connected with a phoenix interface component through a bus, and the liquid leakage detection line is inserted under the phoenix interface component. However, the phoenix terminal interface component is expensive, and the entire hardware link includes a large number of components, and the architecture is complex. After mass production, since the implementation function needs to pass through the connection of multiple different components, it leads to great difficulty in maintenance, and the reliability is also low. In addition, a large number of sensors are connected under the same bus of the control module, which leads to the need for an arbitration mechanism between different devices, and there is a delay in the detection of the cabinet liquid leakage event. When the cabinet has a liquid leakage event, the control module cannot detect the liquid leakage event in time. SUMMARY

[0003] The present application provides a server cabinet liquid leakage detection device and a liquid leakage detection method thereof, to at least solve the problems of expensive cost, complex mass production maintenance procedure, low reliability and inability to detect the cabinet liquid leakage event in time in the related art.

[0004] The present application provides a server cabinet liquid leakage detection device, comprising:

[0005] a cabinet management controller and a power supply rack located in the interior of the cabinet;

[0006] The cabinet management controller and the power supply rack are docked through respective electrical connection interface components;

[0007] A connector is arranged on the power supply rack;

[0008] The cabinet management controller is connected with the connector through a line for transmitting a liquid leakage detection signal; the connector is connected with a liquid leakage detection cable; the liquid leakage detection cable is arranged on a pipeline for transmitting refrigerant; a series resistor is arranged on the liquid leakage detection cable;

[0009] The series resistor is used to adjust the voltage division ratio of the liquid leakage detection signal, so that the cabinet management controller determines the fault type according to the obtained liquid leakage detection signal.

[0010] The present application also provides a liquid leakage detection method of a server cabinet liquid leakage detection device, comprising:

[0011] The cabinet management controller obtains the voltage division value of the liquid leakage detection signal through the connector on the power supply node;

[0012] When the partial pressure value of the liquid leakage detection signal is a first voltage value, it is determined that no liquid leakage event occurs, and the partial pressure value of the liquid leakage detection signal is continuously monitored, and the first voltage value is less than a preset voltage value;

[0013] When the partial pressure value of the liquid leakage detection signal is 0, it is determined that a liquid leakage event occurs.

[0014] When the partial pressure value of the liquid leakage detection signal is a preset voltage value, it is determined that the liquid leakage detection cable is broken.

[0015] The server cabinet liquid leakage detection device provided by the application is simple and flexible in design. A cabinet management controller and a power supply rack are arranged in the cabinet. The cabinet management controller and the power supply rack are connected through respective electrical connection interface components. The cabinet management controller connects the connector on the power supply rack through a liquid leakage detection signal transmission line, and then connects the liquid leakage detection cable arranged on the refrigerant transmission pipeline through the connector. In this way, the number of components for detecting liquid leakage of the server cabinet is greatly simplified, the cost is saved, the complex structure problem caused by multi-stage component connection in the traditional scheme is avoided, and the maintenance difficulty after mass production is reduced, and the reliability of the overall detection device is improved. In addition, by arranging a series resistor on the liquid leakage detection cable to adjust the signal partial pressure ratio, the cabinet management controller can accurately obtain and analyze the partial pressure value of the liquid leakage detection signal, thereby efficiently and accurately distinguishing different fault types and realizing real-time and reliable monitoring of the refrigerant pipeline liquid leakage. Moreover, the device does not need to connect a large number of sensors under a single bus, thereby avoiding the detection lag problem caused by the arbitration mechanism between devices, so that the cabinet management controller can timely determine whether there is a liquid leakage or a broken line event according to the partial pressure value of the liquid leakage detection signal, thereby effectively solving the problems of high cost, complex mass production maintenance procedure, low reliability and inability to timely detect liquid leakage events in the traditional server cabinet liquid leakage detection.

[0016] In addition, the application also provides a corresponding liquid leakage detection method for the server cabinet liquid leakage detection device, which has the same or corresponding technical features as the above-mentioned server cabinet liquid leakage detection device, and the effects are the same. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The front window view of the server cabinet liquid leakage detection device provided by the embodiments of the application.

[0019] Figure 2 The structural schematic diagram of the cabinet management controller and the power supply rack provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 The liquid leakage detection method flow chart of the server cabinet liquid leakage detection device provided by the embodiment of the present application is shown in the figure.

[0021] Wherein, 1 is the cabinet management controller, 2 is the power supply rack, 21 is the power supply, 3 is the electrical connection interface component, 4 is the connector, 5 is the liquid leakage detection cable, 6 is the management switch, 7 is the computing node, 8 is the Ethernet interface, 9 is the switch node, 10 is the main control chip, 11 is the optical emission analog switch, 12 is the first input and output pin, 13 is the analog-digital conversion controller, 14 is the series resistance, 15 is the common ground terminal, 16 is the voltage dividing resistance, 17 is the second input and output pin, 18 is the pull-up resistance, 19 is the voltage regulation chip, 20 is the internal other components, 22 is the serial peripheral interface conversion controller area network controller chip, 23 is the first serial peripheral interface controller, 24 is the first serial peripheral interface link, 25 is the controller area network bus link, 26 is the backup power supply, 27 is the third input and output pin, 28 is the serial peripheral interface memory, 29 is the second serial peripheral interface controller, 30 is the second serial peripheral interface link, A is the liquid leakage detection signal, B is the liquid leakage detection cable in place signal, C is the first enable signal, D is the second enable signal. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0023] It should be noted that, in the description of the present application, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. The terms "first", "second" and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence.

[0024] In order to make the skilled in the art better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0025] An embodiment of the present invention provides a server rack leakage detection device. Figure 1 This is a front view of the server rack for the liquid leakage detection device provided in an embodiment of the present invention. Figure 1 As shown, the server rack leakage detection device may include: a rack management controller module 1 and a power shelf 2 located inside the rack.

[0026] Figure 2 This is a schematic diagram of the rack management controller and power supply rack provided in an embodiment of the present invention. Figure 2 As shown, the rack management controller 1 and the power supply rack 2 are connected via their respective electrical connection interface components 3; the power supply rack 2 is equipped with a connector 4; the rack management controller 1 is connected to the connector 4 via a line used to transmit the leak detection signal A; the connector 4 is connected to the leak detection cable 5; the leak detection cable 5 is installed on the pipe that transmits the refrigerant; the leak detection cable 5 is equipped with a series resistor; the series resistor is used to adjust the voltage division ratio of the leak detection signal so that the rack management controller 1 can determine the fault type based on the acquired leak detection signal.

[0027] In practical applications, the server of this invention can be an Artificial Intelligence Rack (AI Rack) server or other types of servers. An AI Rack server is a high-performance server designed to support artificial intelligence applications, featuring high computing power, high bandwidth, and low latency to meet the needs of AI model training and inference tasks.

[0028] like Figure 1 As shown, the server rack leakage detection device may also include a management switch 6 located inside the rack. The management switch 6, located at the top of the rack, is the core switching device for enabling communication interconnection between server rack devices. The rack may contain at least two power supply racks 2, which are modules that centrally provide power and management functions. Each power supply rack 2 may contain multiple power supply units (PSUs) 21, such as 12 power supply units 21, responsible for providing power to the servers. It may also contain at least one rack management controller 1, which can be a board for centralized monitoring, management, and control of the entire server rack.

[0029] like Figure 1As shown, the server cabinet liquid leakage detection device can further include a computing node 7 located inside the cabinet. The number of computing nodes 7 can be multiple, such as a graphics processor (GPU) box node. The graphics processor box node is a functional module carrying a graphics processor, used for high-performance tasks such as artificial intelligence computing. Each computing node 7 can be connected to the management switch 6 through an Ethernet interface 8, such as a gigabit Ethernet port (GE), to realize communication with other devices. In addition to connecting through the Ethernet interface 8, the computing node 7 and the management switch 6 can also be connected through other interfaces, which are not limited here.

[0030] As shown, Figure 1 As shown, the server cabinet liquid leakage detection device can further include a switch node 9 located inside the cabinet. The number of switch nodes 9 can be multiple. The number of switch nodes 9 and computing nodes 7 can be the same. The switch node 9 can be a service switch, used to carry service data switching inside the cabinet. Each switch node 9 can be connected to the management switch 6 through an Ethernet interface 8 (such as a GE port) to ensure the transmission and interaction of service data. In addition to connecting through the Ethernet interface 8, the switch node 9 and the management switch 6 can also be connected through other interfaces, which are not limited here. The interface of each computing node 7, the interface of each switch node 9, and the interface of the cabinet management controller 1 are all connected to the management switch 6, thereby realizing the communication and interconnection of all devices inside the cabinet and ensuring the transmission and interaction of management, service, control and other data.

[0031] As shown, Figure 2As shown, the cabinet management controller 1 is connected with the power rack 2 through the respective electrical connection interface components 3. The electrical connection interface components 3 are used to realize stable connection between the cabinet management controller 1 and the power rack 2, and provide basic hardware connection for subsequent transmission of the liquid leakage detection signal A. The electrical connection interface components 3 here can be a gold finger or other interface components, which are not limited here. The cabinet management controller 1 is responsible for receiving the liquid leakage detection signal A, and judges whether a liquid leakage event occurs through signal analysis, which is a key unit to trigger subsequent emergency actions (such as power cut-off and alarm). The power rack 2 does not directly detect liquid leakage, and mainly provides a connection interface for the cabinet management controller 1 and the liquid leakage detection cable 5 through the self-provided connector 4. The connector 4 is a signal transfer piece installed on the power rack 2, one end of which is connected with the liquid leakage detection line of the cabinet management controller 1, and the other end is connected with the liquid leakage detection cable 5, which plays a role of signal relay. The liquid leakage detection cable 5 is arranged on the pipeline for transmitting refrigerant to realize real-time sensing of whether the pipeline has refrigerant leakage, and will generate a corresponding detection signal once it contacts the liquid leakage. The pipeline for transmitting refrigerant is used to transport refrigerant required for liquid cooling heat dissipation, and is a monitoring object of liquid leakage, and the arrangement of the liquid leakage detection cable 5 needs to completely cover the area where it may leak. When the pipeline for transmitting refrigerant has liquid leakage, the liquid leakage detection cable 5 arranged on the pipeline first contacts the liquid leakage to generate a liquid leakage detection signal A, which is transmitted to the connector 4 through the liquid leakage detection cable 5. The connector 4 forwards the liquid leakage detection signal A to the liquid leakage detection line, which is transmitted to the cabinet management controller 1. After receiving the liquid leakage detection signal A, the cabinet management controller 1 performs logical analysis to finally determine whether there is a liquid leakage event.

[0032] In the server rack leakage detection device provided in this embodiment of the invention, a rack management controller 1 and a power supply rack 2 are installed inside the rack. The rack management controller 1 and the power supply rack 2 are connected through their respective electrical connection interface components 3. The rack management controller 1 is connected to the connector 4 on the power supply rack 2 via the line that transmits the leakage detection signal A. The connector 4 then connects to the leakage detection cable 5 installed in the refrigerant transmission pipeline. This greatly simplifies the number of components for server rack leakage detection, saves costs, and avoids the complex structural problems caused by the connection of multiple components in traditional solutions. This reduces the maintenance difficulty after mass production and improves the overall reliability of the detection device. Furthermore, by adjusting the signal voltage division ratio by setting a series resistor on the leak detection cable, the rack management controller can accurately acquire and analyze the voltage division value of the leak detection signal, thereby efficiently and accurately distinguishing different fault types and achieving real-time and reliable monitoring of refrigerant pipeline leaks. Moreover, this device does not require a large number of sensors to be centrally connected to a single bus, avoiding the detection lag problem caused by the arbitration mechanism between devices. This allows the rack management controller 1 to promptly determine whether there is a leak or disconnection event based on the voltage division value of the leak detection signal A, thus effectively solving the problems of high cost, complex mass production maintenance procedures, low reliability, and inability to detect leak events in a timely manner in traditional server rack leak detection.

[0033] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the cabinet management controller 1 may include a main control chip 10; the main control chip 10 can be used to receive the leakage detection line presence signal B to determine whether the leakage detection cable 5 is in place; it can also be used to process the leakage detection signal A to determine whether there is a leakage event or a disconnection fault.

[0034] In implementation, such as Figure 2As shown, the rack management controller 1 has an Ethernet interface 8 (such as a GE port), which can be connected to the management switch 6 for communication and management data exchange between the rack management controller 1 and other devices. The main control chip 10 of the rack management controller 1 can be connected to the management switch 6 through this Ethernet interface 8 to achieve network connectivity, thus ensuring the efficiency and stability of management data and detection information transmission. It should be emphasized that the main control chip 10 has dual functions: first, it receives the leakage detection cable presence signal B to determine whether the cable is in place; second, it processes the leakage detection signal A to identify leakage events or wire breakage faults. The main control chip 10's judgment of the presence status of the leakage detection cable 5 can identify cable abnormalities in advance, avoiding missed detections due to cable detachment; the processing of the leakage detection signal A can timely and accurately determine leakage events or wire breakage faults, allowing maintenance personnel to respond quickly, effectively reducing the risk of equipment damage caused by leakage or cable failure, improving the intelligence level of rack leakage detection and fault identification, and enhancing the reliability and maintainability of the device.

[0035] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the rack management controller 1 may include an optical emission (OE) analog switch 11; the main control chip 10 may include a first input / output pin (General-Purpose Input / Output, GPIO) 12 and an analog-to-digital converter (ADC) 13. The main control chip 10 can be connected to the optical emission analog switch 11 through the ADC 13; the main control chip 10 can output a first enable signal C of the optical emission analog switch 11 through the first input / output pin 12 and transmit it to the optical emission analog switch 11 to control the on and off states of the optical emission analog switch 11; the optical emission analog switch 11 is used to switch the on / off state of the leakage detection signal A under the control of the first enable signal, so that the rack management controller 1 can obtain the corresponding voltage division value of the leakage detection signal A through the ADC 13.

[0036] In implementation, the optical emission analog switch 11 of the cabinet management controller 1, the analog-to-digital converter 13 of the main control chip 10, and the first input / output pin 12 constitute the control and acquisition link for the leakage detection signal A. The main control chip 10 is connected to the optical emission analog switch 11 through the analog-to-digital converter 13 to acquire the leakage detection signal A; simultaneously, it outputs a first enable signal C through the first input / output pin 12 to control the on or off state of the optical emission analog switch 11. Under the control of the first enable signal, the optical emission analog switch 11 can switch the leakage detection signal A on and off, enabling the cabinet management controller 1 to accurately obtain its voltage division value through the analog-to-digital converter 13, thereby achieving reliable detection of leakage status and improving the accuracy and controllability of cabinet leakage monitoring. In this way, the main control chip 10 can precisely control the light emission analog switch 11, which can flexibly turn the leakage detection function on or off. It can collect the leakage detection signal A in time when needed to determine whether there is a leakage or disconnection event, and can turn it off when no detection is needed to save resources. The analog-to-digital converter 13 processes the leakage detection signal A, which ensures the accuracy of signal acquisition, enabling the cabinet management controller 1 to accurately identify the leakage situation and trigger corresponding measures in time, thereby improving the reliability and flexibility of leakage detection.

[0037] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the optical emission analog switch 11 can be connected to the electrical connection interface component 3 of the cabinet management controller 1 via a line used to transmit the leakage detection signal A; after the electrical connection interface component 3 of the cabinet management controller 1 is connected to the electrical connection interface component 3 of the power supply rack 2, the electrical connection interface component 3 of the power supply rack 2 can be connected to the first pin of the connector 4 via a line used to transmit the leakage detection signal A; the first pin of the connector 4 is connected to one end of the leakage detection cable 5; the first pin of the connector 4 can be used to transmit the leakage detection signal A in the leakage detection cable 5 to the optical emission analog switch 11.

[0038] In implementation, the optical emission analog switch 11 is connected to the electrical connection interface component 3 (such as a gold finger) of the rack management controller 1 via the leakage detection signal A transmission line. After the rack management controller 1 is connected to the electrical connection interface component 3 of the power supply rack 2, the electrical connection interface component 3 of the power supply rack 2 is then connected to the first pin of the connector 4 via the leakage detection signal A transmission line. The first pin of the connector 4 is connected to one end of the leakage detection cable 5, which is responsible for transmitting the leakage detection signal A from the leakage detection cable 5 to the optical emission analog switch 11. In this way, through the orderly connection of the electrical connection interface components 3, connectors 4 and transmission lines between various components, a simple and reliable leakage detection signal A transmission path is constructed, reducing component redundancy and transfer loss in the signal transmission process. This ensures that the leakage detection signal A can be transmitted efficiently and accurately from the leakage detection cable 5 to the optical emission analog switch 11, thereby allowing the rack management controller 1 to obtain the signal in a timely and accurate manner and judge leakage events or disconnection faults. This improves the reliability and timeliness of rack leakage detection, while also simplifying the hardware architecture and reducing maintenance difficulty and cost.

[0039] In specific implementation, such as Figure 2 As shown, a series resistor 14 is installed on the leakage detection cable 5; the leakage detection cable 5 and the series resistor 14 form a series circuit. The series resistor 14 on the leakage detection cable 5 forms a series circuit with the leakage detection cable 5. This series resistor 14 can adjust the voltage division ratio of the leakage detection signal, allowing the main control chip 10 to determine the current state of no leakage, leakage, or disconnection based on the voltage division value of the leakage detection signal presented in the circuit. By changing the voltage division value through the series resistor 14, a clear and distinguishable level difference is provided to the main control chip 10, enabling the main control chip 10 to accurately distinguish between the three different states of no leakage, leakage, and disconnection. This achieves accurate identification of leakage events and cable faults, improves the accuracy of leakage detection and fault judgment, effectively avoids misjudgment or missed judgment due to unclear state identification, ensures the reliability of cabinet leakage detection, and lays the foundation for timely response measures and protection of cabinet equipment.

[0040] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the other end of the leakage detection cable 5 is connected to the second pin of the connector 4; the second pin of the connector 4 is connected to the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 through the electrical connection interface component 3 of the power supply frame 2, forming a grounding loop; the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 is connected to the common grounding terminal 15 inside the cabinet management controller 1.

[0041] In implementation, the other end of the leak detection cable 5 is connected to the second pin of connector 4. The second pin is the return inlet for the grounding signal, receiving the loop signal transmitted by the leak detection cable 5. The second pin of connector 4 first connects to the electrical connection interface 3 of the cabinet management controller 1 through the electrical connection interface component 3 of the power supply rack 2. The electrical connection interface component 3 of the cabinet management controller 1 is the physical interface through which the grounding signal enters the cabinet management controller 1. After connection, the grounding signal passes through the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 and finally connects to the common grounding terminal 15 inside the cabinet management controller 1, completing the construction of the entire grounding loop. This effectively eliminates electromagnetic interference and signal noise during the transmission of the leak detection signal A, avoids noise affecting the main control chip 10's judgment of the leak signal, and ensures the purity of the leak detection signal A.

[0042] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the cabinet management controller 1 may include a voltage divider resistor 16; one end of the voltage divider resistor 16 is connected to the power supply voltage source, and the other end is connected to the line used to transmit the leakage detection signal A.

[0043] In implementation, the voltage divider resistor 16 in the rack management controller 1 is connected to the power supply voltage source at one end and to the line transmitting the leakage detection signal A at the other end. It forms a voltage divider circuit with the series resistor 14, jointly affecting the voltage division value of the leakage detection signal A. The power supply voltage source provides a signal source for the main control chip 10 to accurately distinguish between states such as no leakage, leakage, and broken wires. The preset voltage value of the power supply voltage source can be set to P3V3_STBY (i.e., 3.3V). By dividing the power supply voltage source through the series resistor 14 on the leakage detection line and the voltage divider resistor 16 on the rack management controller 1, leakage event detection, no-leakage event detection, and leakage signal cable detection can be achieved. When the leakage detection cable is broken, the voltage divider resistor 16 built into the rack management controller 1 can pull up the leakage detection signal A to the preset voltage value of the power supply voltage source. At this time, the leakage detection signal A, after being pulled up and conditioned by the voltage divider resistor 16, will be transmitted to the optical emission analog switch 11 inside the rack management controller 1. The light emission analog switch 11 serves as the control node of the signal path. It will determine whether to allow the conditioned signal to continue to be transmitted based on the first enable signal C of the main control chip 10, thus providing a controllable path for the main control chip 10 to collect signals and determine the leakage status through the analog-to-digital converter controller 13.

[0044] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2As shown, the main control chip 10 may include a second input / output pin 17; the second input / output pin 17 may be used to receive the leak detection line presence signal B transmitted by the connector 4 to identify the presence status of the leak detection cable 5.

[0045] In implementation, the second input / output pin 17 of the main control chip 10 can be used to receive the leak detection cable presence signal B transmitted by the connector 4. The presence or absence of this signal, or changes in its level, identifies whether the leak detection cable 5 is properly connected (i.e., in position). This forms a cable connection status monitoring channel independent of the leak detection signal A in the hardware link, working in parallel with the leak detection function without interference. Through real-time reception of the leak detection cable presence signal B via the second input / output pin 17, the main control chip 10 can promptly detect connection problems such as cable detachment or poor contact, avoiding situations where the leak detection function fails undetected due to the cable not being in position. The independent presence monitoring channel ensures accurate judgment of the physical connection status of the cable, complementing the leak detection function and jointly improving the device's fault diagnosis capability, reducing the risk of missed detections caused by cable problems.

[0046] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the second input / output pin 17 can be connected to the electrical connection interface component 3 of the cabinet management controller 1 via a line used to transmit the leakage detection line presence signal B; after the electrical connection interface component 3 of the cabinet management controller 1 is connected to the electrical connection interface component 3 of the power supply rack 2, the electrical connection interface component 3 of the power supply rack 2 can be connected to the third pin of the connector 4 via a line used to transmit the leakage detection line presence signal B; the third pin of the connector 4 can be used to feed back the leakage detection line presence signal B to the second input / output pin 17 after the leakage detection cable 5 is inserted into the connector 4.

[0047] In implementation, the second input / output pin 17 of the main control chip 10 is the receiving end of the leakage detection line presence signal B. Through the leakage detection line presence signal B transmission line, it is first connected to the electrical connection interface component 3 (such as a gold finger) of the rack management controller 1. After the rack management controller 1 and the electrical connection interface component 3 of the power supply rack 2 are connected, the line extends further, connecting to the third pin of the connector 4 through the interface component of the power supply rack 2, forming a complete signal transmission path between the second input / output pin 17, the electrical connection interface component 3 of the rack management controller 1, the electrical connection interface component 3 of the power supply rack 2, and the third pin of the connector 4. The third pin of the connector 4 does not continuously output a signal; only when the leakage detection cable 5 is fully inserted into the connector 4 will the corresponding line inside the cable conduct with the third pin, thereby generating the leakage detection line presence signal B. This signal is transmitted in reverse along the preset transmission path and finally fed back to the second input / output pin 17 of the main control chip 10. This leakage detection line presence signal B feedback mechanism, constructed through the line and the third pin, allows the main control chip 10 to identify in real time whether the leakage detection cable 5 is properly inserted into the connector 4. If problems such as cable detachment or poor contact occur, the abnormality can be immediately detected through the missing leakage detection line presence signal B, avoiding the situation where the leakage detection function fails due to the cable not being in place without being noticed. At the same time, the independent leakage detection line presence signal B transmission link does not interfere with the leakage detection signal A link, which not only ensures the accuracy of presence monitoring but also allows for rapid problem location in case of faults (if there is no leakage detection line presence signal B, the cable connection is checked first; if there is no leakage detection signal A, the detection link is checked), greatly reducing the difficulty of troubleshooting for maintenance personnel.

[0048] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the fourth pin of connector 4 is connected to the third pin of connector 4 through the wire inside the leakage detection cable 5; the fourth pin of connector 4 is connected to the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 through the electrical connection interface component 3 of the power supply frame 2; the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 is connected to the common grounding terminal 15 inside the cabinet management controller 1.

[0049] In implementation, when the leak detection cable 5 is inserted into connector 4, the internal wires of the cable can connect the third pin (transmitting the leak detection line presence signal B) and the fourth pin (grounding) of connector 4. This means the internal wires of the leak detection cable 5 can connect to the third and fourth pins of connector 4, providing a physical path for the subsequent grounding loop. If the cable is not inserted, the third and fourth pins of connector 4 are disconnected, and the grounding loop cannot be formed. The fourth pin of connector 4 connects to the grounding pin of the electrical connection interface component 3 of the cabinet management controller 1 via the electrical connection interface component 3 of the power supply rack 2. After connection, the grounding signal is transmitted along the path of the fourth pin of connector 4, the power supply rack 2 interface, and the grounding pin of the cabinet management controller 1, ultimately connecting to the common grounding terminal 15 inside the cabinet management controller 1, completing the construction of the entire grounding loop. This loop provides a stable reference potential for the leak detection line presence signal B. When the third pin transmits the leak detection line presence signal B, the grounding of the fourth pin provides a voltage reference for the signal, preventing level drift or noise interference caused by the lack of grounding.

[0050] This invention provides a stable grounding reference for the in-situ signal B of the leakage detection line, effectively eliminating the influence of environmental electromagnetic interference and line noise on the signal. This avoids misjudging the cable's in-situ status by the main control chip 10 due to signal distortion, significantly improving the accuracy of in-situ monitoring. The grounding loop and the in-situ signal transmission link are directly connected through the internal conductors of the cable; the loop is only conductive when the cable is inserted, reducing the risk of logical misjudgment. Finally, it is connected to the common grounding terminal 15 of the cabinet management controller 1, avoiding signal conflicts caused by grounding potential differences between different modules. This also simplifies the hardware grounding design, reduces the difficulty of grounding debugging during mass production and maintenance, and indirectly improves the reliability and compatibility of the device.

[0051] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the cabinet management controller 1 may include a pull-up resistor 18; one end of the pull-up resistor 18 is connected to the power supply voltage source, and the other end is connected to the line used to transmit the presence signal of the leakage detection line.

[0052] In implementation, the pull-up resistor 18 included in the cabinet management controller 1 is connected at one end to the power supply voltage source and at the other end to the line transmitting the leakage detection line presence signal. When the line connected to the leakage detection line presence signal is in an open circuit or high-impedance state, the pull-up resistor 18 can pull the level of the line high to the preset voltage value of the power supply voltage source. The preset voltage value of the power supply voltage source can be set to P3V3_STBY (i.e., 3.3V voltage). When the leakage detection cable 5 is not inserted into the connector 4, the pull-up resistor 18 can pull the leakage detection line presence signal B to the preset voltage value of the power supply voltage source. At this time, the leakage detection line presence signal B, after being pulled up and conditioned by the pull-up resistor 18, is transmitted to the second input / output pin 17 of the main control chip 10.

[0053] Furthermore, in a specific implementation, in the server rack leakage detection device provided in the embodiments of the present invention, when no leakage event occurs, the voltage division value of the leakage detection signal A obtained by the main control chip 10 through the analog-to-digital converter 13 is the first voltage value; the first voltage value is less than the preset voltage value of the power supply voltage source; when a leakage event occurs, the voltage division value of the leakage detection signal A obtained by the main control chip 10 through the analog-to-digital converter 13 is 0; when the leakage detection cable 5 is broken, the voltage division value of the leakage detection signal A obtained by the main control chip 10 through the analog-to-digital converter 13 is the preset voltage value of the power supply voltage source.

[0054] It should be noted that this invention can achieve the voltage division effect of the series resistance on the leakage detection cable 5 and the voltage divider resistor 16 on the cabinet management controller 1 on P3V3_STBY, and can perform leakage event detection, non-leakage event detection, and leakage signal line breakage detection, as shown in Table 1 below:

[0055] Table 1. Partial pressure values ​​of leakage detection signals

[0056]

[0057] When no leakage occurs, i.e., in the no-leakage state, the series resistor 14 on the leakage detection cable 5 and the voltage divider resistor 16 in the cabinet management controller 1 form a voltage divider on the power supply voltage source (e.g., P3V3_STBY, i.e., 3.3V). At this time, the voltage value detected by the main control chip 10 through the analog-to-digital converter 13 is the first voltage value (e.g., V1). The specific value of V1 can be calculated based on the series resistor design on the leakage detection cable 5. It is important to note that V1 needs to be distinguished from 0V and 3.3V (e.g., V1 should be designed as 1.8V) to avoid confusion with other states, and this is used as the basis for judging no leakage. When the cabinet management controller 1 detects a voltage value of V1 through the analog-to-digital converter 13, it indicates that there is no leakage.

[0058] When a leak occurs, the leak detection cable 5 comes into contact with the liquid, and the series resistor 14 on the leak detection cable 5 is short-circuited by the liquid. This causes the impedance of the leak detection cable 5 to become 0 ohms. At this point, the voltage divider circuit loses its voltage-dividing function, and the voltage value of the leak detection signal A drops directly to 0V. When the cabinet management controller 1 detects that the voltage value of the leak detection signal A is 0V through the analog-to-digital converter controller 13, it indicates that a leak has occurred.

[0059] When the leakage detection cable breaks, the impedance of leakage detection cable 5 becomes infinite, equivalent to an open circuit. In this open-circuit state, the voltage divider resistor 16 within the cabinet management controller 1 directly pulls the leakage detection signal A up to the preset voltage value of the power supply (e.g., P3V3_STBY, i.e., 3.3V). The voltage value of leakage detection signal A is 3.3V. When the cabinet management controller 1 detects a voltage value of 3.3V through the analog-to-digital converter 13, it indicates that the leakage detection cable 5 is damaged (broken).

[0060] This invention avoids the risk of misjudgment due to signal ambiguity by corresponding different events to three significantly different voltage values ​​(V1, 0V, 3.3V), allowing the main control chip 10 to quickly and accurately identify the current state. Simultaneously, this design not only detects leakage events but also simultaneously identifies broken wires in the leakage detection cable 5, covering the core risk points of the leakage detection device and preventing missed detections due to cable damage. Furthermore, maintenance personnel can directly locate the problem type through voltage values ​​without additional equipment disassembly for troubleshooting, significantly reducing the difficulty of fault location and maintenance, and further improving the reliability and practicality of the cabinet leakage detection device.

[0061] Furthermore, in a specific implementation, in the server rack leakage detection device provided in the embodiment of the present invention, when the leakage detection cable is in place, the voltage value of the leakage detection cable in place signal B obtained by the main control chip 10 through the second input / output pin 17 is 0; when the leakage detection cable is not in place, the voltage value of the leakage detection cable in place signal B obtained by the main control chip 10 through the second input / output pin 17 is a preset voltage value.

[0062] In implementation, when the leak detection cable is in place (i.e., inserted into connector 4), the two pins are connected through the internal wires of the cable, forming a complete circuit. The presence signal transmitted by one pin, after passing through the power supply rack 2 and the gold fingers of the cabinet management controller 1, is shorted to the common ground terminal 15 of the cabinet management controller 1 through the other pin. At this time, the leak detection cable presence signal B is pulled low by ground, and the voltage value detected by the main control chip 10 through the second input / output pin 17 is 0V, thus determining that the leak detection cable is in place. When the leak detection cable is not in place (i.e., not inserted into connector 4), the two pins at the cable end cannot conduct, and the grounding circuit of the leak detection cable presence signal B is broken. At this time, the pull-up resistor 18 on the cabinet management controller 1 will pull the leak detection cable presence signal B up to the preset voltage value of the power supply voltage source. The main control chip 10 detects the preset voltage value of the power supply voltage source (such as P3V3_STBY, i.e., 3.3V) through the second input / output pin 17, thus determining that the leak detection cable is not in place, as shown in Table 2 below:

[0063] Table 2. Voltage values ​​of the in-situ signal of the leakage detection line.

[0064]

[0065] This invention distinguishes the presence status using two voltage values, 0V and 3.3V, avoiding misjudgments caused by signal ambiguity. This allows the main control chip 10 to accurately identify whether the cable is properly installed in real time. Simultaneously, this design can detect problems such as missing or detached cables in advance, avoiding the risk of leakage detection function malfunctioning unnoticed due to cable absence, thus providing a proactive guarantee for the effective operation of the leakage detection device. Furthermore, maintenance personnel can directly and quickly locate the cable status through voltage values ​​(0V for presence, 3.3V for absence) without disassembling the equipment to check physical connections, significantly reducing the efficiency of fault diagnosis and maintenance, and further improving the reliability and maintainability of the cabinet leakage detection device.

[0066] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the rack management controller 1 may include a voltage regulator chip (VR chip) 19; the voltage regulator chip 19 can be used to receive the set voltage output by the power rack 2 after the rack management controller 1 is connected to the power rack 2, and convert the set voltage into the power signal required by the main control chip 10 and other internal components 20.

[0067] In implementation, after the rack management controller 1 and the power supply rack 2 are connected, the power supply rack 2 can output a set voltage to the rack management controller 1. This set voltage can be set to P12V (i.e., 12V power supply), which is the starting point for the rack management controller 1 to obtain external power. The voltage regulation chip 19 built into the rack management controller 1 receives the P12V voltage output by the power supply rack 2 and can convert it according to the power supply requirements of the internal components. Its conversion objectives are clear: first, to provide a suitable power signal for the main control chip 10; and second, to provide the required power for other components 20 inside the rack management controller 1 (such as the optical emission analog switch 11, voltage divider resistor 16, etc.), realizing a power distribution of one input and multiple outputs.

[0068] This invention uses a voltage regulator chip 19 to uniformly convert the P12V output from the power supply rack 2 into the power required by the internal components, solving the problem of adapting to the different voltage requirements of multiple internal components from a single external power supply. It eliminates the need to design separate power input interfaces for different components, simplifying the hardware architecture. Simultaneously, the voltage regulator chip 19 can stably output the adapted power, preventing abnormal operation of internal components (especially the main control chip 10) due to external power fluctuations. This ensures the accuracy of functions such as leak detection and status judgment, and guarantees that all core components within the cabinet management controller 1 (such as the main control chip 10 and detection link components) receive stable and compliant power, preventing component damage or functional failure due to voltage mismatch. This provides the power foundation for the normal operation of core functions such as leak detection and on-site monitoring. Furthermore, this design allows the cabinet management controller 1 to only interface with the standard P12V power supply of the power supply rack 2, without relying on other special power supplies, improving the compatibility of the power supply system and reducing the difficulty of power supply adaptation during mass production and maintenance.

[0069] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the rack management controller 1 may include a Serial Peripheral Interface (SPI) to Controller Area Network (CAN) controller chip 22; the main control chip 10 may include a first SPI controller 23; the first SPI controller 23 is connected to the SPI to CAN controller chip 22; the SPI to CAN controller chip 22 is connected to the power supply 21 of the power rack 2; the SPI to CAN controller chip 22 is used to perform current sharing control on the power supply 21 and to control whether the power supply 21 outputs a preset voltage power supply to the rack.

[0070] In implementation, the main control chip 10 sends control commands in SPI protocol format to the serial peripheral interface to controller LAN controller chip 22 (i.e., SPI to CAN controller chip) in the rack management controller 1 through its own first serial peripheral interface controller 23, completing the initial transmission of control signals. The SPI to CAN controller chip, acting as a protocol conversion hub, receives the SPI format control commands, converts them to CAN protocol format (CAN protocol is suitable for reliable communication of multi-node devices), and then sends the converted commands to the power supply 21 of the power rack 2. The CAN commands output by the serial peripheral interface to controller LAN controller chip 22 can perform current sharing control on multiple power supplies 21, ensuring balanced output current of each power supply 21 and avoiding overload of individual devices; secondly, it controls whether the power supply 21 outputs a preset voltage power supply (such as 54V power) to the rack, realizing the on / off switching of rack power supply.

[0071] This invention can achieve protocol adaptation through an SPI-to-CAN chip. It utilizes the SPI protocol to ensure high-speed communication between the main control chip 10 and the conversion chip, and uses the CAN protocol to adapt to the distributed control needs of multiple power supplies 21, ensuring accurate transmission of control commands. The current sharing control function can balance the load of each power supply 21, avoid equipment aging or failure caused by uneven current distribution, and extend the life of hardware. The switch control of the preset voltage output can quickly cut off the cabinet power supply in case of abnormal conditions such as leakage or cable failure, preventing the fault from escalating. At the same time, it supports on-demand start and stop power supply, improves energy utilization efficiency, and enhances the overall reliability and safety of the cabinet power system.

[0072] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the first serial peripheral interface controller 23 is connected to the serial peripheral interface to controller LAN controller chip 22 via the first serial peripheral interface link 24; the serial peripheral interface to controller LAN controller chip 22 is connected to the power supply 21 of the power supply rack 2 via the controller LAN bus link 25.

[0073] In implementation, the first serial peripheral interface controller 23 of the main control chip 10 is connected to the SPI-to-CAN controller chip inside the rack management controller 1 via the first serial peripheral interface link 24. The SPI link, as a chip-level short-range communication medium, leverages synchronous communication characteristics to achieve high-speed data interaction between the main control chip 10 and the conversion chip, ensuring rapid initiation and initial transmission of control commands. The SPI-to-CAN controller chip is connected to the power supply unit 21 of the power supply rack 2 via a CAN bus link. The CAN bus is suitable for multi-node distributed communication scenarios, enabling the establishment of a reliable communication network among multiple power supplies 21 in the power supply rack 2, ensuring stable transmission of converted control commands to each power supply 21. The combined use of the SPI link and the CAN bus adapts to the different needs of chip-level short-distance communication and multi-device long-distance communication. It ensures high-speed command transmission between the main control chip 10 and the conversion chip, and ensures stable transmission of control signals among multiple power supplies 21 through the anti-interference capability and multi-node support characteristics of the CAN bus. The hierarchical link design reduces the limitations of a single communication protocol and avoids signal attenuation or conflict caused by the increase in transmission distance or number of nodes. At the same time, the scalability of the CAN bus facilitates the subsequent addition of the number of power supplies 21 without the need to reconstruct the communication link.

[0074] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 2 As shown, the cabinet management controller 1 may include a backup power supply 26; the main control chip 10 includes a third input / output pin 27; the main control chip 10 outputs a second enable signal D through the third input / output pin 27 and transmits it to the backup power supply 26 to control the on and off states of the backup power supply 26.

[0075] In implementation, the rack management controller 1 has a built-in backup power supply 26. The main control chip 10 outputs a second enable signal D through its third input / output pin 27. This signal is directly transmitted to the backup power supply 26 as the core command to control the backup power supply 26 to turn on or off. This allows the main control chip 10 to directly control the working state of the backup power supply 26, achieving precise control of start-up and shutdown on demand. When the main control chip 10 detects a leakage event (the voltage division value of the leakage detection signal A is 0V), it will shut down the output of the power supply unit 21 of the power rack 2 through the controller LAN bus, and at the same time output the second enable signal D through the third input / output pin 27 to turn on the backup power supply 26, ensuring that the rack management controller 1 can still receive power after the main power supply is cut off. This logic reflects the core role of the backup power supply 26 as an emergency backup, that is, when the main power supply system is interrupted due to a fault, the backup power supply is activated by the active control of the main control chip 10.

[0076] This invention directly controls the start and stop of the backup power supply 26 through the main control chip 10. When the main power supply (such as the power supply unit 21 of the power rack 2) is shut down due to a fault such as leakage, the backup power supply 26 is immediately triggered to supply power, preventing the cabinet management controller 1 from losing its monitoring and control capabilities due to power failure, and ensuring continuous tracking and subsequent handling of faults. The second enable signal D of the backup power supply 26 is actively output by the main control chip 10 according to the actual operating conditions, reducing the delay of manual intervention and improving the emergency response speed. At the same time, the backup power supply 26 is only turned on through the second enable signal D when needed, avoiding unnecessary energy consumption, taking into account both the reliability and energy efficiency of the device, and further enhancing the stability and safety of the cabinet under abnormal operating conditions.

[0077] Furthermore, in specific implementations, in the server rack leakage detection device provided in the embodiments of the present invention, such as... Figure 3 As shown, the rack management controller 1 may include a serial peripheral interface memory (SPI Nor Flash) 28; the main control chip 10 includes a second serial peripheral interface controller 29; the main control chip 10 is connected to the serial peripheral interface memory 28 through the second serial peripheral interface controller 29; the second serial peripheral interface controller 29 is connected to the serial peripheral interface memory 28 through a second serial peripheral interface link 30; the serial peripheral interface memory 28 is used to store the firmware (FW) required for the main control chip 10 to run.

[0078] In implementation, when the power supply rack 2 is powered on, its output P54V voltage first supplies the copper busbar at the rear of the rack, and then the copper busbar distributes power to each node of the rack, enabling the rack management controller 1 to power on and start up. This provides the power foundation for subsequent firmware loading. After the rack management controller 1 is powered on, the main control chip 10 establishes a connection with the serial peripheral interface memory 28 built into the rack management controller 1 through its own second serial peripheral interface controller 29, and reads the firmware stored therein. After obtaining the firmware, the main control chip 10 completes the initialization process, loading the control logic (such as leakage detection algorithm, power management strategy, etc.) contained in the firmware into the running memory, enabling the rack management controller 1 to monitor and control the rack, providing the software foundation for subsequent functions such as leakage detection and power supply 21 regulation. The non-volatile nature of the serial peripheral interface memory 28 ensures that the firmware is not lost after power failure. Combined with the high-speed communication characteristics of the second serial peripheral interface link 30, the main control chip 10 can quickly read the firmware and complete the initialization after the cabinet management controller 1 is powered on, shortening the time from power-on to functional readiness of the device and ensuring that core functions such as leakage detection and power control are available in a timely manner. The firmware is centrally stored in the serial peripheral interface memory 28, which facilitates the optimization of system logic by updating the firmware and can achieve system upgrades without modifying the hardware. At the same time, this design is deeply adapted to the cabinet power-on process, ensuring that the startup of the cabinet management controller 1 is synchronized with the cabinet power supply, avoiding monitoring blind spots caused by the lag in controller readiness.

[0079] It should be noted that the server rack leakage detection device of the present invention can effectively solve the key problems in traditional server rack leakage detection technologies. In traditional solutions, the hardware links involve a large number of components and complex structures, which not only leads to high overall costs for server rack leakage detection but also significantly increases the difficulty of maintenance after mass production, while also resulting in low system reliability. Furthermore, traditional server racks often have numerous additional devices connected via a specific bus, and the arbitration process between these devices can prevent timely detection of leakage events, further affecting fault response efficiency. The server rack leakage detection device of the present invention effectively overcomes the shortcomings of existing technologies. On the one hand, it significantly simplifies the number of leakage detection components in the rack, reduces the complexity of the hardware links, thereby lowering overall costs and simplifying the maintenance process after mass production, significantly improving system reliability. On the other hand, it avoids leakage detection delays caused by device arbitration, ensuring that leakage events are detected promptly and improving the timeliness of fault handling. From an architectural design perspective, this device is simple, flexible, and low-cost. It requires only the design of a single system board and the firmware code design of the management controller within the rack to complete the overall setup, greatly simplifying the system design process and further improving system reliability. This fundamentally solves various problems associated with traditional leak detection solutions. Furthermore, this architecture is highly versatile, applicable not only to racks, especially AI racks, but also to core router and switch racks in data communication products for leak detection, effectively improving the efficiency of rack fault location. In summary, the server rack leak detection device of this invention has significant advantages in cost control, reliability improvement, and versatility expansion, thus possessing high market value.

[0080] Based on the same inventive concept, embodiments of the present invention also provide a method for detecting leakage in a server rack leakage detection device. Figure 3 A flowchart illustrating the leakage detection method of the server rack leakage detection device provided in this embodiment of the invention. ​ As shown, the leakage detection method may include the following steps:

[0081] S301. The cabinet management controller obtains the voltage division value of the leakage detection signal through the connector on the power node.

[0082] In implementation, the cabinet management controller may include a main control chip and an optical transmitting analog switch. The main control chip is connected to the management switch via an Ethernet interface. The main control chip can receive a leak detection cable presence signal to determine if the leak detection cable is in place, and process the leak detection signal to determine if a leak event or disconnection fault exists. The main control chip may include a first input / output pin, an analog-to-digital converter (ADC), and a second input / output pin. The main control chip can be connected to the optical transmitting analog switch via the ADC. The main control chip can output a first enable signal for the optical transmitting analog switch via its first input / output pin and transmit it to the optical transmitting analog switch to control its on / off state. The signal output by the optical transmitting analog switch is the leak detection signal. The main control chip includes a second input / output pin; this second input / output pin can be used to receive a leak detection cable presence signal transmitted by the connector to identify the presence status of the leak detection cable.

[0083] The main control chip detects the voltage value of the leak detection line to determine whether the leak detection line is in place. When the leak detection line is detected to be in place, the main control chip obtains the voltage division value of the leak detection signal through the analog-to-digital converter.

[0084] S302. When the voltage division value of the leakage detection signal is the first voltage value, it is determined that no leakage event has occurred, and the voltage division value of the leakage detection signal continues to be monitored; the first voltage value is less than the preset voltage value.

[0085] During implementation, the voltage division value of the leak detection signal was V1, indicating that no cabinet leak event had occurred, and the voltage division value of the leak detection signal continued to be monitored.

[0086] S303. When the partial pressure value of the leakage detection signal is 0, a leakage event is determined to have occurred.

[0087] In practice, when the voltage division value of the leak detection signal is 0V, it indicates that a cabinet leak event has occurred. The cabinet management controller controls the power supply of the power rack to shut down the output through the controller LAN bus link, and the cabinet management controller turns on the backup power supply to power the entire cabinet management controller board through the second enable signal.

[0088] S304. When the voltage division value of the leakage detection signal is the preset voltage value, it is determined that the leakage detection cable is broken.

[0089] In practice, when the voltage drop value of the leak detection signal is 3.3V, it indicates that a leak cable breakage event has occurred.

[0090] In the leakage detection method of the server rack leakage detection device provided in the embodiments of the present invention, a clear correspondence can be established between the voltage division value of the leakage detection signal and different fault types (no leakage, leakage, cable breakage), realizing accurate identification and differentiation of leakage events and cable faults, avoiding misjudgment between single states; the real-time monitoring and judgment logic ensures that leakage events can be detected in a timely manner and cable breakage faults can be detected simultaneously, providing an accurate basis for taking rapid countermeasures, effectively reducing the risk of equipment damage caused by leakage, and ensuring the identifiability of the detection device's own faults.

[0091] Since the embodiments of the leakage detection method of the server rack leakage detection device correspond to the embodiments of the server rack leakage detection device itself, the descriptions of the features in the embodiments corresponding to the leakage detection method of the server rack leakage detection device can be found in the relevant descriptions of the embodiments corresponding to the server rack leakage detection device, and will not be repeated here. Furthermore, it has the same beneficial effects as the server rack leakage detection device mentioned above.

[0092] Furthermore, in a specific implementation, the leakage detection method of the server rack leakage detection device provided in the above embodiments of the present invention may further include, after determining that a leakage event has occurred: turning off the power supply of the power rack and turning on the backup power supply of the rack management controller to supply power to the rack management controller; turning off the optical emission simulation switch of the rack management controller, obtaining the main control chip log of the rack management controller, and performing leakage fault location.

[0093] In implementation, upon determining a leakage event, this invention shuts down the power supply unit, directly cutting off the main power supply circuit that might be affected by the leakage and preventing the spread of leakage or short-circuit risks. Simultaneously, it activates the backup power supply of the cabinet management controller, ensuring uninterrupted operation of core control and monitoring equipment and preserving critical data and operational capabilities for subsequent fault location. Turning off the optical emission simulation switch of the cabinet management controller stops the transmission of relevant optical signals, preventing interference from potential line anomalies caused by leakage. The main control chip log records key information such as equipment operating status, anomaly trigger time, and interaction information between modules. By accessing the logs, the equipment's response at the time of leakage can be quickly traced, pinpointing whether the fault lies in the power supply module, line interface, or other components, avoiding blind troubleshooting.

[0094] Furthermore, in a specific implementation, in the above-mentioned server rack leakage detection device leakage detection method provided in the embodiments of the present invention, after determining that the leakage detection cable has broken, it may further include: turning off the optical emission simulation switch of the rack management controller, obtaining the main control chip log of the rack management controller, and locating the fault; if it is located that the leakage line is broken, then a good leakage detection cable is replaced for the rack.

[0095] In implementation, this invention, upon determining that a leak detection cable has broken, shuts down the optical emission simulation switch of the cabinet management controller. This proactively stops the output and transmission of related optical signals, preventing interference between abnormal signals from the broken cable and normal optical signals. This ensures that subsequent log data only reflects the cable breakage-related fault, rather than mixed interference signals. The main control chip log of the cabinet management controller records the signal feedback, communication status, and abnormal trigger information of each detection module in real time. Cable breakage causes detection signal interruption or abnormality, and these abnormalities are accurately recorded in the log. By analyzing the log, it is possible to quickly determine which cable segment, interface, or detection node broke, clarifying the specific location and trigger time of the fault, avoiding blind cable troubleshooting.

[0096] Furthermore, in a specific implementation, in the above-mentioned server rack leakage detection method provided in the embodiment of the present invention, before executing step 301, which uses the rack management controller to obtain the voltage division value of the leakage detection signal through the connector on the power node, it may further include: after the power rack is powered on, the power rack outputs a preset voltage power supply to power the copper busbar behind the rack, and then each node in the rack obtains power from the copper busbar, the rack management controller starts to power on, and the main control chip of the rack management controller obtains the firmware from the serial peripheral interface memory through the second serial peripheral interface link to complete the initialization.

[0097] In implementation, the power supply rack first outputs a preset voltage to the cabinet's copper busbar, and then each node draws power from the copper busbar. This ensures that all nodes receive a stable and uniform voltage, avoiding voltage fluctuations caused by independent power supply to individual nodes. It also simplifies the power supply wiring layout within the cabinet and reduces the risk of line faults. After power-on, the cabinet management controller retrieves the firmware from the memory and completes initialization via the second serial peripheral interface link. This second serial peripheral interface link features stable transmission and rate adaptation, ensuring accurate firmware data reading. As the core program of the controller, the successful loading of the firmware directly determines whether the controller can normally perform functions such as equipment monitoring and fault diagnosis, and is a crucial step for the cabinet to enter a manageable state.

[0098] The above provides a detailed description of a server rack leakage detection device and its leakage detection method provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only intended to help understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A server rack leakage detection device, characterized in that, include: The rack management controller and power supply rack are located inside the rack; The cabinet management controller and the power rack are connected via their respective electrical connection interface components; The power supply rack is equipped with a connector; the connector is a signal adapter installed on the power supply rack; the power supply rack provides a connection interface between the cabinet management controller and the leakage detection cable through the connector; The cabinet management controller is connected to the connector via a line for transmitting a leak detection signal; the connector is connected to the leak detection cable; the leak detection cable is installed on the pipe for transmitting refrigerant; and a series resistor is installed on the leak detection cable. The series resistor is used to adjust the voltage division ratio of the leakage detection signal so that the cabinet management controller can determine the fault type based on the acquired leakage detection signal. The cabinet management controller includes a main control chip, an optical emission analog switch, and voltage divider resistors. The main control chip processes the leakage detection signal to determine whether a leakage event or a disconnection fault exists. The main control chip includes a first input / output pin and an analog-to-digital converter (ADC). The main control chip is connected to the optical emission analog switch through the ADC. The main control chip outputs a first enable signal for the optical emission analog switch through the first input / output pin and transmits it to the optical emission analog switch. The optical emission analog switch is connected to the electrical connection interface component of the cabinet management controller via a line for transmitting the leakage detection signal; one end of the voltage divider resistor is connected to the power supply voltage source, and the other end is connected to the line for transmitting the leakage detection signal; the voltage divider resistor and the series resistor form a voltage divider circuit, which together affect the voltage division value of the leakage detection signal. The optical emission analog switch is used to switch the leakage detection signal on and off under the control of the first enable signal, so that the cabinet management controller can obtain the corresponding voltage division value of the leakage detection signal through the analog-to-digital converter controller. When no leakage event occurs, the voltage division value of the leakage detection signal obtained by the main control chip through the analog-to-digital converter is the first voltage value; The first voltage value is less than the preset voltage value of the power supply voltage source; When a leakage event occurs, the voltage division value of the leakage detection signal obtained by the main control chip through the analog-to-digital converter is 0; When the leakage detection cable breaks, the voltage division value of the leakage detection signal obtained by the main control chip through the analog-to-digital converter is the preset voltage value of the power supply voltage source.

2. The server rack leakage detection device according to claim 1, characterized in that, The main control chip is also used to receive the presence signal of the leakage detection line and determine whether the leakage detection cable is in place.

3. The server rack leakage detection device according to claim 2, characterized in that, After the electrical connection interface component of the cabinet management controller is connected to the electrical connection interface component of the power supply rack, the electrical connection interface component of the power supply rack is connected to the first pin of the connector through a line for transmitting the leakage detection signal. The first pin of the connector is connected to one end of the leakage detection cable; The first pin of the connector is used to transmit the leakage detection signal to the optical emission analog switch.

4. The server rack leakage detection device according to claim 3, characterized in that, The other end of the leakage detection cable is connected to the second pin of the connector; The second pin of the connector is connected to the ground pin of the electrical connection interface component of the cabinet management controller via the electrical connection interface component of the power supply rack. The grounding pin of the electrical connection interface component of the cabinet management controller is connected to the common grounding terminal inside the cabinet management controller.

5. The server rack leakage detection device according to claim 4, characterized in that, The main control chip includes a second input / output pin; The second input / output pin is used to receive the presence signal of the leak detection cable transmitted by the connector to identify the presence status of the leak detection cable.

6. The server rack leakage detection device according to claim 5, characterized in that, The second input / output pin is connected to the electrical connection interface component of the cabinet management controller via a line for transmitting the presence signal of the leakage detection line; After the electrical connection interface component of the cabinet management controller is connected to the electrical connection interface component of the power supply rack, the electrical connection interface component of the power supply rack is connected to the third pin of the connector through a line for transmitting the presence signal of the leakage detection line. The third pin of the connector is used to feed back the presence signal of the leakage detection cable to the second input / output pin after the leakage detection cable is inserted into the connector.

7. The server rack leakage detection device according to claim 6, characterized in that, The fourth pin of the connector is connected to the third pin of the connector via a wire inside the leakage detection cable. The fourth pin of the connector is connected to the ground pin of the electrical connection interface component of the cabinet management controller via the electrical connection interface component of the power supply rack. The grounding pin of the electrical connection interface component of the cabinet management controller is connected to the common grounding terminal inside the cabinet management controller.

8. The server rack leakage detection device according to claim 7, characterized in that, The cabinet management controller includes pull-up resistors; One end of the pull-up resistor is connected to the power supply voltage source, and the other end is connected to the line used to transmit the presence signal of the leakage detection line.

9. The server rack leakage detection device according to claim 8, characterized in that, When the leak detection cable is in place, the voltage value of the leak detection cable presence signal obtained by the main control chip through the second input / output pin is 0. When the leak detection cable is not in place, the voltage value of the leak detection cable presence signal obtained by the main control chip through the second input / output pin is the preset voltage value of the power supply voltage source.

10. The server rack leakage detection device according to claim 1, characterized in that, The cabinet management controller includes a voltage regulation chip; The voltage regulation chip is used to receive the set voltage output by the power rack after the cabinet management controller is connected to the power rack, and convert the set voltage into the power signal required by the main control chip and other internal components.

11. The server rack leakage detection device according to claim 1, characterized in that, The cabinet management controller includes a serial peripheral interface to controller local area network controller chip; the main control chip includes a first serial peripheral interface controller. The first serial peripheral interface controller is connected to the serial peripheral interface to controller local area network controller chip; The serial peripheral interface to controller LAN controller chip is connected to the power supply of the power rack. The serial peripheral interface to controller LAN controller chip is used to perform current sharing control on the power supply and to control whether the power supply outputs a preset voltage power supply to the cabinet.

12. The server rack leakage detection device according to claim 11, characterized in that, The first serial peripheral interface controller is connected to the serial peripheral interface to controller local area network controller chip via a serial peripheral interface link; The serial peripheral interface to controller LAN controller chip is connected to the power supply of the power rack via a controller LAN bus link.

13. The server rack leakage detection device according to claim 1, characterized in that, The cabinet management controller includes a backup power supply; the main control chip includes a third input / output pin. The main control chip outputs a second enable signal through the third input / output pin and transmits it to the backup power supply to control the on and off states of the backup power supply.

14. The server rack leakage detection device according to claim 1, characterized in that, The cabinet management controller includes a serial peripheral interface memory; the main control chip includes a second serial peripheral interface controller. The main control chip is connected to the serial peripheral interface memory through the second serial peripheral interface controller; The serial peripheral interface memory is used to store the firmware required for the main control chip to run.

15. A method for detecting leakage in a server rack leakage detection device as described in any one of claims 1 to 14, characterized in that, include: The cabinet management controller obtains the voltage division value of the leakage detection signal through the connector on the power node; When the voltage division value of the leakage detection signal is the first voltage value, it is determined that no leakage event has occurred, and the voltage division value of the leakage detection signal continues to be monitored; the first voltage value is less than the preset voltage value of the power supply voltage source; When the partial pressure value of the leakage detection signal is 0, a leakage event is determined to have occurred. When the voltage division value of the leakage detection signal is equal to the preset voltage value of the power supply voltage source, it is determined that the leakage detection cable has broken.

16. The leakage detection method according to claim 15, characterized in that, After determining that a leak has occurred, the following steps are also included: Turn off the power supply of the power rack and turn on the backup power supply of the rack management controller to power the rack management controller; turn off the optical emission simulation switch of the rack management controller, obtain the main control chip log of the rack management controller, and locate the leakage fault.

17. The leakage detection method according to claim 16, characterized in that, After determining that the leak detection cable has broken, the following steps are also included: Turn off the optical emission simulation switch of the cabinet management controller, obtain the main control chip log of the cabinet management controller, and locate the disconnection fault.

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