SSD (Solid State Disk) state indication equipment with state indication function

Abstract

The utility model discloses an SSD (Solid State Disk) state indicating device with a state indicating function, comprising a backup protection main body which is connected with a main circuit of a surge protection device and is used for cutting off the circuit to protect the surge protection device in an abnormal condition; the side indication device is arranged on the side edge of the backup protection main body, and the side indication device is integrated with a voltage detection module, an LED indication lamp and a test line interface; the test line interface is connected to a solid-state discharge switch output end of the surge protection device through a high-impedance lead and is used for acquiring a voltage signal and transmitting the voltage signal to the voltage detection module; the LED indicating lamp is electrically connected with the voltage detection module, and the LED indicating lamp receives a state signal of the voltage detection module to indicate the working state of the SSD. According to the utility model, the problem that the SSD state cannot be accurately monitored in real time in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to a status indication device, specifically to an SSD status indication device with status indication function. Background Technology

[0002] Surge protectors (SPDs), as protective devices used to limit transient overvoltages and discharge surge currents, are widely used in various electrical systems. They effectively protect electrical equipment from surges caused by factors such as lightning strikes and power grid fluctuations. Solid-state discharge switches (SSDs), as a key component of SPDs, can quickly conduct and discharge current when a surge occurs, and rapidly return to a high-resistance state after the surge disappears, ensuring normal circuit operation.

[0003] However, current SPD systems have some shortcomings. During long-term use, SSDs may experience performance degradation, conduction abnormalities, or even failure due to repeated power surges, environmental factors, or aging. Most existing SPD backup protection devices lack real-time monitoring and intuitive indication of the SSD's operating status. Maintenance personnel cannot accurately and promptly understand the SSD's actual operating status and cannot take appropriate measures immediately when problems occur. This may result in the SPD failing to function properly during subsequent power surges, thus exposing electrical equipment to the risk of damage. Utility Model Content

[0004] The purpose of this invention is to provide an SSD status indicator device with status indication function to solve the problem that traditional technologies cannot accurately monitor the SSD status in real time.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An SSD status indication device with status indication function, comprising:

[0006] A backup protection unit is connected to the main circuit of the surge protector. The backup protection unit is used to cut off the circuit to protect the surge protector in abnormal situations.

[0007] Side indicator device, which is disposed on the side of the backup protection body, integrates a voltage detection module, an LED indicator and a test lead interface;

[0008] The test lead interface is connected to the output terminal of the solid-state discharge switch of the surge protector via a high-impedance wire, and is used to collect voltage signals and transmit them to the voltage detection module.

[0009] The LED indicator is electrically connected to the voltage detection module, and the LED indicator receives the status signal from the voltage detection module to indicate the working status of the SSD.

[0010] As a preferred embodiment of an SSD status indicator device with status indication function, the LED indicator is a dual-color LED, the positive terminal of the dual-color LED is connected to the power supply terminal of the driving circuit, and the negative terminal of the dual-color LED is connected to the status signal output terminal of the voltage detection module.

[0011] As a preferred embodiment of an SSD status indicator device with status indication function, the backup protection body has a groove on its side, and the bottom of the side indicator device has a snap-fit ​​structure. The snap-fit ​​structure engages with the groove, or the side indicator device is fixed to the side of the backup protection body by screws.

[0012] As a preferred embodiment of an SSD status indication device with status indication function, the voltage detection module is a threshold comparison circuit;

[0013] The threshold comparison circuit includes a transformer TRANS1, a diode D12, resistors R10, R11, R12, R13, and R14, capacitors C15, C16, and C17, an operational amplifier AR, and a Zener diode Da3.

[0014] The “Uo2 detection” terminal is connected to the primary winding of transformer TRANS1. The secondary winding of transformer TRANS1 is connected to the anode of diode D12. The cathode of diode D12 is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C15 and one end of resistor R11. The other end of capacitor C15 is grounded. The other end of resistor R11 is connected to a +12V power supply and grounded through C16. The inverting input of operational amplifier AR is connected to the node between resistors R10 and R11. One end of resistor R12 is connected to a +3.3V power supply. The other end of resistor R12 is connected to the non-inverting input of operational amplifier AR and one end of resistor R13. The other end of resistor R13 is connected to the output of operational amplifier AR. The output of operational amplifier AR is also connected to one end of resistor R14. The other end of resistor R14 is connected to the “AD0809IN6” terminal. The “AD0809IN6” terminal is grounded through capacitor C17 and connected to the cathode of Zener diode Da3. The anode of Zener diode Da3 is grounded.

[0015] As a preferred embodiment of an SSD status indication device with status indication function, the voltage detection module is a microcontroller (MCU).

[0016] The AD sampling port of the microcontroller (MCU) is connected to the test line interface through a filter circuit. The digital signal output port of the microcontroller (MCU) is connected to the control terminal of the LED indicator through a pull-up resistor. The microcontroller (MCU) is used to process the collected voltage signal and output a status signal.

[0017] As a preferred embodiment of an SSD status indication device with status indication function, the side indication device also integrates a 485 transmission module, which includes a chip U1, resistors R4, R5, R6, R7, R8, R9, transistor Q1, capacitor C2, and interface J2.

[0018] Pin 1 (RO) of chip U1 is connected to one end of resistor R7, and the other end of resistor R7 is the RS485_RX signal receiver. Pin 2 (RE#) and pin 3 (DE) of chip U1 are connected together. Pin 7 (B) of chip U1 is connected to the power supply ground through resistor R5, and is also connected to pin 2 (B) of interface J2 through resistor R6. Pin 3 (DE) of chip U1 is connected to the collector of transistor Q1. The base of transistor Q1 is connected to the RS485_TX signal transmitter through resistor R9. The emitter of transistor Q1 is grounded.

[0019] Pin 5 of chip U1 is grounded (GND), pin 6A of chip U1 is connected to pin 1A of interface J2, and pin 6A of chip U1 is connected to a 3.3V power supply through resistor R4.

[0020] The VCC pin of chip U1 is connected to a 3.3V power supply and grounded through capacitor C2;

[0021] The signal input terminal of the 485 transmission module is connected to the status signal output terminal of the voltage detection module, which is used to convert the SSD status information output by the voltage detection module and transmit it remotely through the 485 bus connected by interface J2.

[0022] The beneficial effects of this utility model are as follows:

[0023] First, the voltage detection module, test line interface, and LED indicator integrated into the side indicator device can collect the voltage signal at the output terminal of the SSD in real time, accurately determine its working status, and display it intuitively through the LED indicator, so that maintenance personnel can keep abreast of the SSD status and avoid the loss of effective protection of electrical equipment due to the failure to detect SSD abnormalities.

[0024] Secondly, the side indicator device can be engaged with the side groove of the backup protection body through a snap-fit ​​structure or fixed with screws. This installation method is not only convenient and quick to install, but also facilitates disassembly, inspection and replacement of parts in the later stage, reducing maintenance costs and improving operation and maintenance efficiency.

[0025] Third, the voltage detection module can employ a threshold comparison circuit or a microcontroller (MCU). In a threshold comparison circuit, the components work together to effectively process the acquired voltage signal and compare it with a threshold. An MCU can perform more complex processing and analysis on the voltage signal. Both can adapt well to different power grid environments, improve the accuracy of SSD status judgment, and reduce false positives and false negatives.

[0026] Fourth, the 485 transmission module integrated in the side indicator device can convert SSD status information and transmit it remotely via the 485 bus, which facilitates centralized management and remote monitoring of the working status of multiple SPDs and SSDs in large electrical systems or distributed systems, thereby improving the overall operation and maintenance management level of the system. Attached Figure Description

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0029] Figure 1 This is a schematic diagram of an SSD status indicator device with status indication function provided in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the threshold comparison circuit used in the voltage detection module of the SSD status indication device with status indication function provided in this embodiment of the present invention.

[0031] Figure 3 This is a circuit diagram of the 485 transmission module in the SSD status indication device with status indication function provided in this embodiment of the present invention.

[0032] In the diagram, 1 is the backup protection unit; 2 is the side indicator; 21 is the voltage detection module; 22 is the LED indicator; 23 is the test lead interface; and 24 is the 485 transmission module. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] See Figure 1 This utility model embodiment provides an SSD status indication device with status indication function, including: a backup protection body 1, which is connected to the main circuit of a surge protector and is used to cut off the circuit to protect the surge protector in abnormal situations; and a side indicator device 2, which is disposed on the side of the backup protection body 1 and integrates a voltage detection module 21, an LED indicator 22, and a test line interface 23; the test line interface 23 is connected to the solid-state discharge switch output terminal of the surge protector through a high-impedance wire, and is used to collect voltage signals and transmit them to the voltage detection module 21; the LED indicator 22 is electrically connected to the voltage detection module 21 and receives status signals from the voltage detection module 21 to indicate the working status of the SSD.

[0036] Specifically, surge protectors may encounter abnormal situations such as overcurrent and overheating during operation, which can damage them. The backup protection unit 1 is connected to the main circuit of the surge protector. When an abnormal situation is detected, it can promptly cut off the circuit, preventing further damage to the surge protector. The side indicator 2 is placed on the side of the backup protection unit 1, facilitating the integration of related functional modules without affecting the overall layout. The voltage detection module 21, LED indicator 22, and test lead interface 23 are integrated into a single unit. The test lead interface 23 is used to connect to a specific location to collect signals. The voltage detection module 21 analyzes and processes the collected signals, while the LED indicator 22 displays the analysis results intuitively for easy observation by staff. The use of high-impedance wires reduces the impact on the original circuitry at the output of the solid-state discharge switch, ensuring the accuracy and reliability of the collected voltage signal. The test lead interface 23 serves as the signal acquisition entry point, collecting the voltage signal from the output of the solid-state discharge switch and transmitting it to the voltage detection module 21, providing a data basis for subsequent status judgment. After analyzing and judging the collected voltage signal, the voltage detection module 21 will output the corresponding status signal. The LED indicator 22 is electrically connected to the voltage detection module 21, can receive these status signals, and indicates the working status of the solid-state discharge switch (SSD) with different display states (such as on / off, color change, etc.) according to different signals, so that the staff can intuitively understand the working status of the SSD.

[0037] In one possible embodiment, the LED indicator 22 is a dual-color LED, with the positive terminal of the dual-color LED connected to the power supply terminal of the driving circuit, and the negative terminal of the dual-color LED connected to the status signal output terminal of the voltage detection module 21.

[0038] Specifically, the dual-color LED can indicate different operating states using different colors. Its positive terminal is connected to the power supply of the driver circuit to obtain power, and its negative terminal is connected to the status signal output terminal of the voltage detection module 21. When the voltage detection module 21 outputs different status signals, it changes the voltage across the dual-color LED, thus causing the LED to display different colors and providing a clearer indication of the SSD's operating status.

[0039] In one possible embodiment, the backup protection body 1 has a groove on its side, and the bottom of the side indicator 2 has a snap-fit ​​structure that engages with the groove, or the side indicator 2 is fixed to the side of the backup protection body 1 by screws.

[0040] Specifically, the use of grooves and snap-fit ​​structures, or screw fixing, facilitates the installation and removal of the side indicator 2 and the backup protection body 1. The snap-fit ​​structure engages with the groove, making installation simple, quick, and relatively stable; screw fixing provides a more secure connection, ensuring a tight fit between the side indicator 2 and the backup protection body 1, preventing easy loosening during equipment operation, and also facilitating disassembly for maintenance or component replacement.

[0041] See Figure 2In one possible embodiment, the voltage detection module 21 is a threshold comparison circuit; the threshold comparison circuit includes a transformer TRANS1, a diode D12, resistors R10, R11, R12, R13, R14, capacitors C15, C16, and C17, an operational amplifier AR, and a Zener diode Da3; the "Uo2 detection" terminal is connected to the primary winding of the transformer TRANS1, the secondary winding of the transformer TRANS1 is connected to the anode of the diode D12, the cathode of the diode D12 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the capacitor C15 and one end of the resistor R11, and the other end of the capacitor C15 is connected to... The other end of resistor R11 is connected to a +12V power supply and grounded through C16; the inverting input of operational amplifier AR is connected to the node between resistors R10 and R11; one end of resistor R12 is connected to a +3.3V power supply, and the other end of resistor R12 is connected to the non-inverting input of operational amplifier AR and one end of resistor R13, and the other end of resistor R13 is connected to the output of operational amplifier AR; the output of operational amplifier AR is also connected to one end of resistor R14, and the other end of resistor R14 is connected to the "AD0809IN6" terminal, which is grounded through capacitor C17 and connected to the cathode of Zener diode Da3, and the anode of Zener diode Da3 is grounded.

[0042] Specifically, the voltage signal acquired by the "Uo2 detection" terminal is first transformed by transformer TRANS1 to meet the processing requirements of subsequent circuits. Diode D12 acts as a rectifier, converting the AC signal into a DC signal. The circuit composed of resistors and capacitors acts as a filter and voltage divider, stabilizing the signal and providing a suitable input voltage for operational amplifier AR. Operational amplifier AR, as the core component, compares the voltage at the inverting input terminal with the reference voltage at the non-inverting input terminal (set by resistors R12 and R13), and outputs the corresponding signal based on the comparison result. Resistor R14 acts as a current limiter, and capacitor C17 and Zener diode Da3 are used to stabilize the output signal. Finally, the processed signal is transmitted to the "AD0809IN6" terminal to provide a basis for subsequent SSD status determination.

[0043] In one possible embodiment, the voltage detection module 21 is a microcontroller MCU; the AD sampling port of the microcontroller MCU is connected to the test line interface 23 through a filter circuit, and the digital signal output port of the microcontroller MCU is connected to the control terminal of the LED indicator 22 through a pull-up resistor. The microcontroller MCU is used to process the collected voltage signal and output a status signal.

[0044] Specifically, the voltage signal acquired by test line interface 23 may be subject to noise interference. The filtering circuit can filter the signal to remove noise, making the signal input to the AD sampling port of the microcontroller MCU cleaner. The microcontroller MCU analyzes and processes the acquired voltage signal to determine the operating status of the SSD and outputs the corresponding status signal through the digital signal output port. The pull-up resistor ensures that the control terminal of LED indicator 22 is in a high-level state when there is no signal input, and also enhances the signal driving capability, ensuring that LED indicator 22 can accurately display the status signal output by the microcontroller MCU.

[0045] See Figure 3 In one possible embodiment, the side indicator 2 further integrates a 485 transmission module 24, which includes a chip U1, resistors R4, R5, R6, R7, R8, and R9, a transistor Q1, a capacitor C2, and an interface J2. Pin 1 (RO) of chip U1 is connected to one end of resistor R7, and the other end of resistor R7 is the RS485_RX signal receiver. Pins 2 (RE#) and 3 (DE) of chip U1 are connected together. Pin 7 (B) of chip U1 is connected to power ground via resistor R5 and simultaneously connected to pin 2 (B) of interface J2 via resistor R6. Pin 3 (DE) of chip U1 is connected to the transistor... The collector of transistor Q1 and the base of transistor Q1 are connected to the RS485_TX signal transmitter via resistor R9, and the emitter of transistor Q1 is grounded. Pin 5 of chip U1 is grounded (GND), and pin 6 (A) of chip U1 is connected to pin 1 (A) of interface J2. Pin 6 (A) of chip U1 is connected to a 3.3V power supply via resistor R4. Pin 8 (VCC) of chip U1 is connected to a 3.3V power supply and grounded via capacitor C2. The signal input of the 485 transmission module 24 is connected to the status signal output of the voltage detection module 21, used to convert the SSD status information output by the voltage detection module 21 and transmit it remotely via the 485 bus connected through interface J2.

[0046] Specifically, the SSD status information output by the voltage detection module 21 is first input to the signal input terminal of the 485 transmission module 24. Chip U1 is the core of the 485 transmission module 24, responsible for signal conversion and transmission. When a signal needs to be sent, the RS485_TX signal transmitter controls the conduction and cutoff of transistor Q1 through resistor R9, thereby controlling the transmit enable terminal (pin 3 DE) of chip U1. Resistors R4, R5, R6, R7, and R8 serve as voltage dividers, current limiters, and impedance matching devices, ensuring the stability and accuracy of signal transmission. Capacitor C2 is used for power supply filtering to stabilize the supply voltage of chip U1. Interface J2 is used to connect to the 485 bus, remotely transmitting the SSD status information converted by chip U1 to other devices via the 485 bus, enabling remote monitoring and data sharing.

[0047] The workflow of this utility model is as follows:

[0048] System initialization: After the equipment is powered on, the modules in the backup protection main body 1 and the side indicator device 2 begin initialization. The voltage detection module 21, the 485 transmission module 24, and the microcontroller (if an MCU solution is used) perform internal parameter settings, self-tests, and other operations. The LED indicator 22 enters the initial display state (such as being off or displaying a specific initial color) to ensure that all parts can work normally.

[0049] Backup Protection Main Unit 1 Monitoring Circuit: Backup Protection Main Unit 1 continuously monitors parameters such as current and temperature of the surge protector's main circuit. Upon detecting abnormalities such as overcurrent or overheating, it immediately disconnects the circuit to prevent damage to the surge protector and ensure equipment safety. Afterward, it continues to monitor the main circuit until the abnormality is resolved and normal monitoring resumes.

[0050] Side indicator 2 acquires voltage signals: Test lead interface 23 is connected to the SSD output terminal via a high-impedance wire to continuously acquire voltage signals. The high impedance characteristic ensures that the acquisition process does not affect the normal operation of the circuit where the SSD is located, guaranteeing signal accuracy. The acquired voltage signal is transmitted to voltage detection module 21 in real time.

[0051] Voltage detection module 21 processes signals:

[0052] The threshold comparison circuit processes the voltage as follows: The voltage acquired at the "Uo2 detection" terminal is transformed by transformer TRANS1 and rectified by diode D12. Then, it is filtered and divided by a circuit composed of resistors and capacitors to provide a suitable input for operational amplifier AR. Operational amplifier AR compares the voltage at its inverting input terminal with the reference voltage at its non-inverting input terminal (set by R12 and R13). The output signal is current-limited by R14 and stabilized by C17 and Da3 before being transmitted to the "AD0809IN6" terminal to determine the SSD status.

[0053] Microcontroller (MCU) processing method: The acquired voltage signal is filtered to remove noise before being input to the MCU's AD sampling port. The MCU analyzes and processes the signal, determines the SSD's operating status, and outputs the corresponding status signal through the digital signal output port.

[0054] LED indicator 22 displays the status: LED indicator 22 receives the status signal output by voltage detection module 21. If it is a dual-color LED, it controls the positive and negative voltages according to the signal, and displays the SSD working status intuitively with different colors (such as green for normal and red for abnormal) and on / off and flashing modes, which is convenient for maintenance personnel to check on-site.

[0055] The 485 transmission module 24 remotely transmits status information (if applicable): The 485 transmission module 24 receives status signals from the voltage detection module 21. The chip U1, with the assistance of resistors, transistors, and other components, converts the signals into a format suitable for 485 bus transmission. Through the 485 bus connected via interface J2, the SSD status information is remotely transmitted to the monitoring center or other devices, enabling remote monitoring and management. Afterward, it continuously waits for new status signals and repeats the transmission operation.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An SSD status indication device with status indication function, characterized in that, include: Backup protection body (1), the backup protection body (1) is connected to the main circuit of the surge protector, the backup protection body (1) is used to cut off the circuit to protect the surge protector in abnormal situations; Side indicator (2), the side indicator (2) is disposed on the side of the backup protection body (1), the side indicator (2) integrates voltage detection module (21), LED indicator (22) and test line interface (23); The test line interface (23) is connected to the output terminal of the solid-state discharge switch of the surge protector through a high-impedance wire, and is used to collect voltage signals and transmit them to the voltage detection module (21); The LED indicator (22) is electrically connected to the voltage detection module (21), and the LED indicator (22) receives the status signal from the voltage detection module (21) to indicate the working status of the SSD.

2. The SSD status indication device with status indication function according to claim 1, characterized in that, The LED indicator (22) is a dual-color LED. The positive terminal of the dual-color LED is connected to the power supply terminal of the driving circuit, and the negative terminal of the dual-color LED is connected to the status signal output terminal of the voltage detection module (21).

3. The SSD status indication device with status indication function according to claim 1, characterized in that, The backup protection body (1) has a groove on its side, and the bottom of the side indicator (2) has a snap-fit ​​structure. The snap-fit ​​structure engages with the groove, or the side indicator (2) is fixed to the side of the backup protection body (1) by screws.

4. The SSD status indication device with status indication function according to claim 1, characterized in that, The voltage detection module (21) is a threshold comparison circuit; The threshold comparison circuit includes a transformer TRANS1, a diode D12, resistors R10, R11, R12, R13, and R14, capacitors C15, C16, and C17, an operational amplifier AR, and a Zener diode Da3. The "Uo2 detection" terminal is connected to the primary winding of transformer TRANS1. The secondary winding of transformer TRANS1 is connected to the anode of diode D12. The cathode of diode D12 is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C15 and one end of resistor R11. The other end of capacitor C15 is grounded. The other end of resistor R11 is connected to a +12V power supply and grounded through C16. The inverting input of operational amplifier AR is connected to the node between resistors R10 and R11. One end of resistor R12 is connected to a +3.3V power supply. The other end of resistor R12 is connected to the non-inverting input of operational amplifier AR and one end of resistor R13. The other end of resistor R13 is connected to the output of operational amplifier AR. The output of operational amplifier AR is also connected to one end of resistor R14. The other end of resistor R14 is connected to the "AD0809IN6" terminal. The "AD0809IN6" terminal is grounded through capacitor C17 and connected to the cathode of Zener diode Da3. The anode of Zener diode Da3 is grounded.

5. The SSD status indication device with status indication function according to claim 1, characterized in that, The voltage detection module (21) is a microcontroller (MCU); The AD sampling port of the microcontroller MCU is connected to the test line interface (23) through a filter circuit. The digital signal output port of the microcontroller MCU is connected to the control terminal of the LED indicator (22) through a pull-up resistor. The microcontroller MCU is used to process the collected voltage signal and output a status signal.

6. The SSD status indication device with status indication function according to claim 1, characterized in that, The side indicator device (2) also integrates a 485 transmission module (24), which includes a chip U1, resistors R4, R5, R6, R7, R8, R9, transistor Q1, capacitor C2, and interface J2. Pin 1 (RO) of chip U1 is connected to one end of resistor R7, and the other end of resistor R7 is the RS485_RX signal receiver. Pin 2 (RE#) and pin 3 (DE) of chip U1 are connected together. Pin 7 (B) of chip U1 is connected to the power supply ground through resistor R5, and is also connected to pin 2 (B) of interface J2 through resistor R6. Pin 3 (DE) of chip U1 is connected to the collector of transistor Q1. The base of transistor Q1 is connected to the RS485_TX signal transmitter through resistor R9. The emitter of transistor Q1 is grounded. Pin 5 of chip U1 is grounded (GND), pin 6A of chip U1 is connected to pin 1A of interface J2, and pin 6A of chip U1 is connected to a 3.3V power supply through resistor R4. The VCC pin of chip U1 is connected to a 3.3V power supply and grounded through capacitor C2; The signal input terminal of the 485 transmission module (24) is connected to the status signal output terminal of the voltage detection module (21), which is used to convert the SSD status information output by the voltage detection module (21) and transmit it remotely through the 485 bus connected by the interface J2.

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