Machine room passage power environment linkage alarm device and alarm system

Abstract

The utility model discloses a kind of machine room passageway power environment linkage alarm device and alarm system, the utility model is provided with power supply circuit, power failure detection circuit, controller and communication circuit, power supply circuit includes voltage output and energy storage capacitor, energy storage capacitor connects voltage output, voltage output is powered by machine room power supply, power failure detection circuit has input and output, input connects voltage output, controller includes power supply pin, signal pin and communication pin, power supply pin connects voltage output, signal pin connects output;Signal pin is used to trigger alarm signal when machine room power supply power failure, communication circuit connects communication pin and voltage output, for sending alarm signal to server, signal pin triggers alarm signal when machine room power supply power failure, signal pin changes from high level to low level, energy storage capacitor can maintain controller and communication circuit work in short time, to send alarm signal to server and realize power failure alarm.

Description

Technical Field

[0001] This utility model relates to the field of computer rooms, and in particular to a computer room access power and environmental linkage alarm device and alarm system. Background Technology

[0002] Currently, the power and environmental management hosts for big data data centers fall into two categories: industrial all-in-one machines based on Intel x86 CPUs, running Windows or Linux systems; and low-power edge computing hosts based on high-performance ARM CPUs, running Linux or Android systems. These CPUs have relatively high power consumption, ranging from several watts to tens of watts. Maintaining CPU operation during a power outage in the data center typically requires a backup power supply or battery, making it difficult to implement a power failure alarm function. Therefore, currently, due to hardware limitations and the availability of Windows, Linux, and Android systems, there is no system-level power failure alarm function for data center power outages or unexpected host power failures. Power outages are serious incidents in big data data centers, causing significant losses. Utility Model Content

[0003] This application provides a power and environmental linkage alarm device and alarm system for a computer room corridor to solve at least one problem existing in related technologies. The technical solution is as follows: In a first aspect, embodiments of this application provide a power and environmental linkage alarm device for a computer room corridor, comprising: The power supply circuit includes a voltage output port and an energy storage capacitor. The energy storage capacitor is connected to the voltage output port, which is powered by the computer room power supply. A power failure detection circuit has an input terminal and an output terminal, wherein the input terminal is connected to the voltage output port; The controller includes a power pin, a signal pin, and a communication pin. The power pin is connected to the voltage output port, and the signal pin is connected to the output terminal. The signal pin is used to trigger an alarm signal when the power supply to the computer room fails. A communication circuit, connected to the communication pin and the voltage output port, is used to send alarm signals to the server.

[0004] In one embodiment, the voltage output port includes a first output port and a second output port. The first output port is powered by the computer room power supply through a switching power supply. The first output port is connected to the input terminal. The second output port is connected to the energy storage capacitor, the power supply pin, and the communication circuit.

[0005] In one embodiment, the power supply circuit further includes a step-down circuit, and the first output port is connected to the second output port through the step-down circuit.

[0006] In one implementation, the voltage of the signal pin is greater than the minimum high-level voltage of the CMOS level standard when the computer room power supply is on, and the detection method of the signal pin is a falling edge interrupt.

[0007] In one embodiment, the power failure detection circuit includes a first resistor and a second resistor. One end of the first resistor is connected to the input terminal, the other end of the first resistor is connected to one end of the second resistor and the output terminal, and the other end of the second resistor is grounded.

[0008] In one embodiment, the power failure detection circuit further includes an overvoltage protection diode and a filter capacitor; the overvoltage protection diode, the filter capacitor, and the second resistor are connected in parallel.

[0009] In one embodiment, the first resistor and the second resistor are resistors with 1% accuracy.

[0010] In one embodiment, the communication circuit includes a PHY chip circuit and an Ethernet interface circuit. The PHY chip circuit is connected to the communication pin, the second output port, and the Ethernet interface circuit. The Ethernet interface circuit is connected to the second output port and is used to connect to the server.

[0011] In one embodiment, the Ethernet interface circuit includes an isolation transformer and an Ethernet interface. The isolation transformer is connected to the second output port, the PHY chip circuit, and the Ethernet interface, which is used to connect to the server.

[0012] Secondly, this application provides an alarm system, including a server and a power and environmental linkage alarm device for the computer room channel.

[0013] The beneficial effects of the above technical solution include at least the following: The system comprises a power supply circuit, a power failure detection circuit, a controller, and a communication circuit. The power supply circuit includes a voltage output port and an energy storage capacitor, with the energy storage capacitor connected to the voltage output port, which is powered by the data center power supply. The power failure detection circuit has an input terminal and an output terminal, with the input terminal connected to the voltage output port. The controller includes a power pin, a signal pin, and a communication pin. The power pin is connected to the voltage output port, and the signal pin is connected to the output terminal. The signal pin is used to trigger an alarm signal when the data center power supply fails. The communication circuit connects the communication pin and the voltage output port, and is used to send the alarm signal to the server. When the data center power supply fails, the signal pin changes from a high level to a low level to trigger the alarm signal. The energy storage capacitor can maintain the operation of the controller and communication circuit for a short period of time, thereby sending the alarm signal to the server and realizing a power failure alarm.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0016] Figure 1 This is a block diagram of the power and environmental linkage alarm device for the computer room passageway, as described in an embodiment of this application. Figure 2 This is a schematic diagram of the power supply circuit in an embodiment of this application; Figure 3 This is a schematic diagram of the power-down detection circuit according to an embodiment of this application; Figure 4 This is a schematic diagram of the controller in an embodiment of this application; Figure 5 This is a schematic diagram of the communication circuit according to an embodiment of this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used only to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. References to "embodiment" herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figure 1 This application provides a power and environmental linkage alarm device for a computer room passage, including: a power supply circuit, a power failure detection circuit, a controller, and a communication circuit.

[0021] like Figure 2 As shown in the embodiment of this application, the power supply circuit includes a voltage output port, a step-down circuit, and an energy storage capacitor. The energy storage capacitor is connected to the voltage output port, and the power supply circuit is powered by the computer room power supply (therefore, the voltage output port is powered by the computer room power supply). Optionally, the voltage output port includes a first output port and a second output port. In the input section 21 of the power supply circuit, the 220VAC powered by the computer room power supply is input through the 12V_IN of the interface JP12 and stepped down to 12V by the switching power supply (equivalent to a voltage converter). The position of 12V_IN is the first output port, which can be the 12V power supply input voltage of the PCB motherboard where the controller is located. In addition, the input section of the power supply circuit includes a self-resetting fuse F1 for overcurrent protection, a Schottky diode D3 for power input polarity protection, a TVS diode DT9 for overvoltage protection, and filter capacitors C1 and C205.

[0022] like Figure 2 As shown, the step-down circuit 22 includes a step-down converter chip U2, an LDO step-down chip U7, and related components. It steps down the 12V input from the first output port to VCC5V and VCC3V3. The terminal of VCC3V3 is the second output port, and the capacitor connected to the second output port is the energy storage capacitor C2. Therefore, the VCC12V of the first output port is actually powered by the computer room power supply. When the computer room power supply fails, the first output port has no voltage output, but the second output port can still be powered through the energy storage capacitor C2, thus powering the controller's power pin VDD.

[0023] like Figure 3As shown in the embodiment of this application, the power-down detection circuit has an input terminal A, an output terminal B, a first resistor R14, a second resistor R15, a 3.3V overvoltage protection transistor ESD1 (other embodiments may use a TVS), and a filter capacitor C20. The input terminal A is connected to the first output port in the voltage output port, and the output terminal B is connected to the signal pin PD1 of the controller. One end of the first resistor R14 is connected to the input terminal A, and the other end of the first resistor R14 is connected to one end of the second resistor R15 and the output terminal B. The other end of the second resistor R15 is grounded (GND). The overvoltage protection transistor ESD1, the filter capacitor C20, and the second resistor R15 are connected in parallel. It should be noted that the first resistor R14 and the second resistor R15 are 1% precision resistors to ensure stability. Simultaneously, R14 acts as a current limiter to protect the signal pin PD1 from overcurrent, ESD1 provides overvoltage protection for the signal pin PD1, and C20 is used to remove input voltage glitches. R14 and R15 are designed as a voltage divider circuit so that the voltage input to the signal pin PD1 is high during normal operation (i.e., when the computer room power supply is normal). The input voltage of the signal pin PD1 is greater than the minimum high-level voltage of the CMOS standard: 0.7 × 3.3V = 2.31V. During normal operation, the voltage of the signal pin PD1 is V = (R15 / (R14+R15)) × 12V_IN = (2.2K / (8.2K+2.2K)) * 12V = 2.54V. 2.54V is greater than 2.31V. ESD1 is a 3.3V TVS / ESD transistor to provide overvoltage protection for the PD1 pin, and C20 is used to remove input voltage glitches.

[0024] like Figure 4 As shown in the embodiments of this application, the controller (U1.1, U1.2) includes a power supply pin VDD, a signal pin PD1 (other pins may be used in other embodiments), a communication pin, and other pins. Figure 4 The power and environmental linkage alarm device for the computer room corridor also includes peripheral circuitry of the controller (not the focus of this application and will not be elaborated upon). The power supply pin VDD is connected to the second output port in the voltage output port, and the signal pin PD1 is connected to output terminal B. The signal pin PD1 is used to trigger an alarm signal when the computer room power fails, i.e., to trigger the controller to generate an alarm signal and send it through the communication pin. Optionally, taking a high-performance, low-power ARM chip STM32H7 series MCU with a working main frequency of 480MHz as an example, the communication pins include, but are not limited to, ETH_TX_EN, ETH_TXD0, ETH_TXD1, ETH_RXD0, ETH_RXD1, ETH_CRS_DV, ETH_REF_CLK, ETH_MDC, ETH_MDIO, and NRST.

[0025] like Figure 5As shown in the embodiment of this application, the communication circuit connects the communication pin and the second output port in the voltage output port, and is used to send the alarm signal to the server. Optionally, the communication circuit includes a PHY chip circuit and an Ethernet interface circuit. The PHY chip circuit is connected to the communication pin, the second output port, and the Ethernet interface circuit. The Ethernet interface circuit is connected to the second output port and is used to connect to the server.

[0026] like Figure 5 As shown, the PHY chip circuit includes PHY chip U8 and surrounding connection circuits. The Ethernet interface circuit includes isolation transformer U3 and Ethernet interface RJ1. Isolation transformer U3 is connected to the second output port (powered with 3.3V from the second output port of the voltage output port), PHY chip U8, and Ethernet interface RJ1. The Ethernet interface is used to connect to the server. It should be noted that servers in computer rooms are usually equipped with UPS, so an alarm signal can be received when the computer room power fails.

[0027] It should be noted that the STM32H7 controller chip has a built-in Ethernet MAC (Media Access Control) interface, which complies with the IEEE 802.3-2005 standard. Therefore, an external U8 (PHY chip) is required. This is a 100Mbps Ethernet PHY chip. The U8 (PHY chip) converts the Ethernet digital signals into differential transceiver signals ETH_TX_P, ETH_TX_N, ETH_RX_P, and ETH_RX_N. These signals are then connected to the RJ45 Ethernet port RJ1 with indicator lights via the 100Mbps network isolation transformer U3 to complete network communication and transmit alarm signals.

[0028] The specific working process of the embodiments of this application is described below: When the server room power fails, the 12V_IN voltage of the first output port also drops. The energy stored in the energy storage capacitor C2 allows the low-power controller and communication circuit to operate for a short period of 1 to 2 seconds. During this time, the controller can send an alarm signal to the server via the communication circuit to trigger a power failure alarm. Specifically, the simultaneous drop in the 12V_IN voltage of the first output port causes output terminal B to lose power. At this time, the signal pin PD1 changes from a high level to a low level, triggering the controller to generate an alarm signal emitted from the communication pin (i.e., the controller detects the change in signal pin PD1 from a high level to a low level and generates an alarm signal emitted from the communication pin).

[0029] In one implementation, the detection method of the controller's signal pin PD1 can be a falling edge interrupt. To ensure the alarm information is sent, the controller can send multiple alarm signals within 1 to 2 seconds to ensure that the server receives the alarm signal.

[0030] It should be noted that the detection mode of signal pin PD1 is configured to be falling edge triggered. During initialization, the function of PD1 pin connected to the POWER_FAIL signal can be initialized to the falling edge triggered external interrupt state. When the system loses power, the falling edge interrupt of PD1 is triggered, and alarm information can be sent cyclically several times until the entire system stops working due to power failure. This ensures that the server receives at least one alarm information, improves the alarm success rate, and is real-time, stable, and reliable.

[0031] It should be noted that in this embodiment, the parameters of the energy storage capacitor C2 are 4700μF / 10V. After testing, it can enable the low-power controller and communication circuit to work for 1 to 2 seconds for a short period of time. In practical applications, the debugging personnel can conduct tests based on the actual situation. For example, if a longer working time is required to send alarm information, the corresponding parameters of the energy storage capacitor C2 can be determined through testing. For example, it may be necessary to increase it to 6800uF or 10000uF. That is, the parameters of the energy storage capacitor C2 can be adjusted based on the actual working time and the number of triggers required, without specific limitations.

[0032] The power and environmental linkage alarm device for the computer room channel in this application embodiment can perform power failure alarms in a low-cost, real-time, stable and reliable manner. The controller does not require an external backup power supply or an additional battery. Through a cleverly designed power failure detection circuit, it can realize real-time power failure detection in the computer room and ensure that the power failure alarm information can be sent successfully, which helps to reduce the losses caused by power failure in big data computer rooms.

[0033] This application also provides an alarm system, including the above-mentioned power and environmental linkage alarm device for the server room channel.

[0034] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A power and environmental linkage alarm device for a computer room passageway, characterized in that, include: The power supply circuit includes a voltage output port and an energy storage capacitor. The energy storage capacitor is connected to the voltage output port, which is powered by the computer room power supply. A power failure detection circuit has an input terminal and an output terminal, wherein the input terminal is connected to the voltage output port; The controller includes a power pin, a signal pin, and a communication pin. The power pin is connected to the voltage output port, and the signal pin is connected to the output terminal. The signal pin is used to trigger an alarm signal when the power supply to the computer room fails. A communication circuit, connected to the communication pin and the voltage output port, is used to send alarm signals to the server.

2. The computer room corridor power and environment linkage alarm device according to claim 1, characterized in that: The voltage output port includes a first output port and a second output port. The first output port is powered by the computer room power supply through a switching power supply. The first output port is connected to the input terminal. The second output port is connected to the energy storage capacitor, the power supply pin, and the communication circuit.

3. The computer room passageway power and environmental linkage alarm device according to claim 2, characterized in that: The power supply circuit also includes a step-down circuit, and the first output port is connected to the second output port through the step-down circuit.

4. The computer room passageway power and environmental linkage alarm device according to claim 1, characterized in that: The voltage of the signal pin is greater than the minimum high-level voltage of the CMOS level standard when the computer room power supply is on. The detection method of the signal pin is falling edge interrupt.

5. The computer room passageway power and environmental linkage alarm device according to claim 1, characterized in that: The power failure detection circuit includes a first resistor and a second resistor. One end of the first resistor is connected to the input terminal, the other end of the first resistor is connected to one end of the second resistor and the output terminal, and the other end of the second resistor is grounded.

6. The computer room passageway power and environmental linkage alarm device according to claim 5, characterized in that: The power failure detection circuit also includes an overvoltage protection diode and a filter capacitor; the overvoltage protection diode, the filter capacitor, and the second resistor are connected in parallel.

7. The computer room passageway power and environmental linkage alarm device according to claim 5, characterized in that: The first resistor and the second resistor are resistors with 1% precision.

8. The computer room passageway power and environmental linkage alarm device according to claim 2, characterized in that: The communication circuit includes a PHY chip circuit and an Ethernet interface circuit. The PHY chip circuit is connected to the communication pin, the second output port, and the Ethernet interface circuit. The Ethernet interface circuit is connected to the second output port and is used to connect to the server.

9. The computer room passageway power and environmental linkage alarm device according to claim 8, characterized in that: The Ethernet interface circuit includes an isolation transformer and an Ethernet interface. The isolation transformer is connected to the second output port, the PHY chip circuit, and the Ethernet interface. The Ethernet interface is used to connect to the server.

10. An alarm system, characterized in that: Includes a server and a data center access power and environmental linkage alarm device as described in any one of claims 1-9.

Images