Intelligent surge monitoring device for power supply lightning protection system

Abstract

The utility model discloses an intelligent surge monitoring device for a power supply lightning protection system, and particularly relates to the technical field of monitoring and early warning of the power supply lightning protection system, which comprises an upper housing and a base, a liquid crystal display screen, a display driving module, an indicating lamp group, a key group, a voltage limiting module and a probe interface are arranged in the upper-layer circuit board, and a central processing unit, a storage module, a clock module, an isolation module and a downloading port are arranged in the middle-layer circuit board; a power supply module, a switching value sampling module, a communication module, an analog quantity sampling module, a front-row terminal and a rear-row terminal are arranged in the lower-layer circuit board; according to the utility model, by monitoring the rule of lightning activity and detecting the equipment state of the power supply lightning protection system, the early warning of the damage of lightning activity and the failure of lightning protection equipment can be realized, and the safe operation of the lightning protection system is ensured.

Description

Technical Field

[0001] This utility model relates to the field of power supply surge protection system monitoring and early warning technology, specifically to an intelligent surge monitoring device for power supply surge protection systems. Background Technology

[0002] Power surge protection systems are crucial lightning protection devices in various industries, especially in power distribution and communication equipment. In power sector surge protection systems, they serve as a basis for assessing the quality of regional power supply. These systems must record the number of overvoltage surges, peak overcurrents, and energy information experienced by surge protectors. They must calculate and analyze the patterns and trends of lightning activity, predict the timing of lightning strikes and potential damage, monitor the operational status of the surge protection devices, prevent wear and failure, avoid attenuation and damage caused by repeated high-voltage surges, and prevent overheating or even fires. Because surge protectors operate at high resistance during normal operation, their state after failure is uncertain—it could be a short circuit or an open circuit. In unattended areas, surge protector failure causing short circuits can trigger a series of protective actions, severely impacting the normal operation of protected equipment. Therefore, ensuring the normal and safe operation of power surge protection systems requires an effective monitoring device for early warning of lightning strikes and control of surge protector failures.

[0003] A surge protection cabinet is a device used to protect electronic equipment inside a cabinet from damage caused by lightning strikes. It is typically installed in computer rooms or outdoor cabinets in fields such as communications, power, transportation, and finance.

[0004] In the current technology, early warning of lightning activity trends is still in its infancy. The basis for testing the performance of surge protectors is the displacement of the tripping device inside the surge protector. This means that the condition can only be detected after the surge protection element has completely failed. As a result, the response is relatively late, which feels like locking the stable door after the horse has bolted. This will bring considerable hidden dangers to the safety of power surge protection systems.

[0005] Therefore, we need to develop an intelligent surge monitoring device for power supply surge protection systems. This device records the energy of lightning strikes based on the detection of their waveforms and magnitudes. It also provides early warnings of lightning occurrence trends by analyzing the frequency and patterns of lightning events. Furthermore, it predicts the performance of surge protection components by monitoring their temperature rise and deformation. This allows us to promptly inform management personnel to protect power distribution and communication equipment and eliminate potential faults in the surge protection devices themselves. By enabling early detection, early warning, early protection, and early replacement, the operation and maintenance of surge protection systems will become more reliable, safer, and more feasible. Utility Model Content

[0006] The purpose of this invention is to solve the problems of existing power supply surge protection systems being unable to predict lightning strikes to equipment in advance and unable to provide early warnings of the deterioration of surge protection devices themselves.

[0007] Therefore, the technical solution adopted by this utility model is as follows:

[0008] A smart surge monitoring device for a power supply lightning protection system includes a housing, which comprises an upper cover and a base. Inside the housing are an upper circuit board, a middle circuit board, and a lower circuit board. The upper circuit board houses an LCD screen, a display driver module, indicator lights, a button group, a voltage limiting module, a probe interface, and a lightning sensing probe. The middle circuit board houses a central processing unit, a storage module, a clock module, an isolation module, and a download port. The lower circuit board houses a power module, a digital input sampling module, a communication module, and an analog input sampling module. The system includes front and rear terminals; the upper circuit board and the middle circuit board are electrically connected via an upper-middle connector, and the middle circuit board and the lower circuit board are electrically connected via a lower-middle connector; the lower opening of the upper cover and the upper opening of the base are respectively provided with a buckle on both sides, and the upper cover and the base are assembled by interlocking the buckles on both sides; a mounting pin is inserted into the rear side of the base, and a mounting slot is provided in the middle of the lower part of the base. The mounting slot is used to mount the whole machine onto the guide rail inside the surge protection cabinet, and the mounting pin is pushed inward to fix the whole machine.

[0009] Preferably, the liquid crystal display screen is embedded in the center of the front of the upper cover, the indicator light group consists of four light-emitting diodes arranged horizontally and embedded below the liquid crystal display screen, the button group consists of four micro-switches arranged horizontally and embedded below the indicator light group, and the probe interface is connected to an external sensing probe through a probe cable.

[0010] Preferably, the front row terminals are soldered to the front side of the lower circuit board, and the rear row terminals are soldered to the rear side of the lower circuit board. The outer side of the front row terminals is provided with a front terminal interface, and a front terminal screw is provided above the front row terminals. The outer side of the rear row terminals is provided with a rear terminal interface, and a rear terminal screw is provided above the rear row terminals. The front terminal interface and front terminal screw of the front row terminals are respectively embedded and exposed on the front side of the upper cover, and the rear terminal interface and rear terminal screw of the rear row terminals are respectively embedded and exposed on the rear side of the upper cover.

[0011] Preferably, the upper circuit board and the middle circuit board are electrically connected by a middle-upper layer connector, which consists of a pin header and a socket. The two pin headers are soldered to the bottom surface of the upper circuit board, and the two sockets are soldered to the top surface of the middle circuit board. The middle circuit board and the lower circuit board are electrically connected by three middle-lower layer connectors, which consist of a multi-port pin header and a multi-port socket. The three multi-port pin headers are soldered to the bottom surface of the middle circuit board, and the three multi-port sockets are soldered to the top surface of the lower circuit board. The lower circuit board is mounted on the base.

[0012] Preferably, each of the front and rear terminal rows has eight terminals. The right pair of terminals in the front terminal row are power input terminals, which are externally connected to the L and N lines of the input power supply. The middle and left terminals in the front terminal row are empty. The three left terminals in the rear terminal row are two pairs of remote signaling switch quantity sampling terminals, which are, from left to right, common terminal G, remote signaling terminal one Y, and remote signaling terminal two Y.

[0013] Preferably, the middle pair of terminals in the rear row are RS-communication terminals, and the right pair of terminals in the rear row are analog signal acquisition terminals, externally connected to a temperature sensor probe and internally connected to an analog signal sampling module.

[0014] Preferably, the power input terminal in the front row of terminals connects the external working power supply to the lower circuit board and then to the input terminal of the power module. The power module converts the AC power supply into a low-voltage DC power supply and then connects to the central processing unit, storage module, clock module, isolation module, digital quantity sampling module, communication module, analog quantity sampling module, LCD display, display driver module and voltage limiting module through the lower middle layer connector and the upper middle layer connector, respectively.

[0015] Preferably, the output ports of the central processing unit are respectively connected to the storage module, clock module, isolation module, download port, communication module, analog sampling module, display driver module, indicator light group, button group, and voltage limiting module. The isolation module is connected to the switch sampling module, the display driver module is connected to the LCD screen, the indicator light group is directly driven by the central processing unit and illuminates as needed; the button group sends the operation signals of each button to the central processing unit, and the voltage limiting module limits the amplitude and current of the current signal transmitted from the sensing probe through the probe cable.

[0016] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0017] This utility model discloses an intelligent surge monitoring device for a power supply lightning protection system. The outer shell consists of an upper cover and a base, with three layers of circuit boards inside. The upper layer contains an LCD screen and a display driver module; the middle layer contains a central processing unit and a storage module; and the lower layer houses a power module and a switch quantity sampling module. All layers are electrically connected via connectors and secured to the outer shell with clips and screws. The device connects to an induction probe via a probe interface to collect lightning current or leakage current signals. The front terminals are connected to the power input, and the rear terminals are connected to remote signaling switch quantity sampling, communication, and analog quantity acquisition terminals. The power module supplies power to all circuits, and the central processing unit, as the core, connects all modules, realizing functions such as data processing, storage, display driving, signal sampling, and communication. This device, with its central processing unit as the core control circuit, combined with the three-layer circuit boards, integrates multiple signal acquisition and remote communication functions. It can monitor lightning patterns and the status of lightning protection system components, providing early warning of lightning damage and equipment failure, and offering reliable protection for the safe operation of the power supply lightning protection system. Attached Figure Description

[0018] Figure 1 This is a front view of an intelligent surge monitoring device for a power supply lightning protection system according to this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of an intelligent surge monitoring device for a power supply lightning protection system according to the present invention;

[0020] Figure 3 This is a schematic diagram of the circuit block of an intelligent surge monitoring device for a power supply lightning protection system according to the present invention.

[0021] In the diagram: 1. Upper cover; 1a. Buckle; 2. Base; 2a. Mounting bayonet; 3. Front terminal; 3a. Front terminal interface; 3b. Front terminal screw; 4. Rear terminal; 4a. Rear terminal interface; 4b. Rear terminal screw; 5. Probe interface; 6. Lightning induction probe; 6a. Probe cable; 7. Mounting pin; 8. Upper circuit board; 8a. LCD screen; 8b. Display driver module; 8c. Indicator light group; 8d. Button group; 8e. Voltage limiting module; 9. Middle circuit board; 9a. Central processing unit; 9b. Storage module; 9c. Clock module; 9d. Isolation module; 9e. Download port; 10. Lower circuit board; 10a. Power module; 10b. Switch quantity sampling module; 10c. Communication module; 10d. Analog quantity sampling module; 11. Upper-middle connector; 12. Lower-middle connector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figures 1-3 As shown, this utility model provides an intelligent surge monitoring device for a power supply lightning protection system, including an upper cover 1 and a base 2. Inside the cover, an upper circuit board 8, a middle circuit board 9, and a lower circuit board 10 are installed. The upper circuit board 8 contains an LCD display 8a, a display driver module 8b, an indicator light group 8c, a button group 8d, a voltage limiting module 8e, a probe interface 5, and a lightning sensing probe 6. The middle circuit board 9 contains a central processing unit 9a, a storage module 9b, a clock module 9c, an isolation module 9d, and a download port 9e. The lower circuit board 10 contains a power module 10a, a switch quantity sampling module 10b, and a communication module. 10c, analog sampling module 10d, front terminal 3 and rear terminal 4; the upper circuit board 8 and the middle circuit board 9 are electrically connected through the upper-middle connector 11, and the middle circuit board 9 and the lower circuit board 10 are electrically connected through the lower-middle connector 12; the lower opening of the upper cover 1 and the upper opening of the base 2 are respectively provided with a buckle 1a on both sides, and the upper cover 1 and the base 2 are assembled by the buckles 1a on both sides; a mounting pin 7 is inserted into the rear side of the base 2, and a mounting slot 2a is provided in the middle of the lower part of the base 2. The mounting slot 2a is used to mount the whole machine onto the guide rail in the lightning protection cabinet, and then push the mounting pin 7 inward to fix the whole machine.

[0024] like Figure 1The diagram shows the external structure of an intelligent surge monitoring device for a power supply lightning protection system according to this utility model. The LCD screen 8a is embedded in the center of the front of the upper cover 1, used to display parameter settings and test data. The indicator light group 8c consists of four LEDs, arranged horizontally and embedded below the LCD screen 8a, indicating the power supply operation, lightning monitoring, remote signaling detection, and communication transmission / reception status respectively. The button group 8d consists of four micro-switches, arranged horizontally and embedded below the indicator light group 8c, used to set communication parameters, switch data increments / decrements, download and update programs, view remote signaling status, and view temperature data respectively. The probe interface 5 is connected to an external sensing probe via a probe cable 6a. The sensing probe is a highly sensitive, wide-range loop coil, which is connected to the grounding wire of the external lightning protection device during use. It can sense and transmit weak leakage current or high-energy lightning current signals in the grounding wire to the internal detection circuit; the front row terminals 3 are soldered to the front side of the lower circuit board 10, and the rear row terminals 4 are soldered to the rear side of the lower circuit board 10. The outer side of the front row terminals 3 is provided with a front terminal interface 3a for connecting external power lines. The front terminal screw 3b is provided above the front row terminals 3 for tightening the wires passing through the front terminal interface 3a; the outer side of the rear row terminals 4 is provided with a rear terminal interface 4a for connecting external signal lines. The rear terminal screw 4b is provided above the rear row terminals 4 for tightening the wires passing through the rear terminal interface 4a; the front terminal interface 3a and the front terminal screw 3b of the front row terminals 3 are respectively embedded and exposed on the front side of the upper cover 1, and the rear terminal interface 4a and the rear terminal screw 4b of the rear row terminals 4 are respectively embedded and exposed on the rear side of the upper cover 1.

[0025] like Figure 2The diagram shows the internal structure of an intelligent surge monitoring device for a power supply lightning protection system according to this utility model. There are two upper-middle layer connectors 11 electrically connecting the upper circuit board 8 and the middle circuit board 9. Each upper-middle layer connector 11 consists of pin headers and sockets. The two pin headers are soldered to the bottom surface of the upper circuit board 8, and the two sockets are soldered to the top surface of the middle circuit board 9. During installation, the two pin headers of the upper circuit board 8 are inserted into the two sockets of the middle circuit board 9, which serves both to fix the upper circuit board 8 and to connect the power supply and transmit signals. There are also two lower-middle layer connectors 12 electrically connecting the middle circuit board 9 and the lower circuit board 10. The three middle and lower layer connectors 12 consist of multi-pin headers and multi-hole sockets. The three multi-pin headers are soldered to the bottom surface of the middle layer circuit board 9, and the three multi-hole sockets are soldered to the top of the lower layer circuit board 10. During installation, the three multi-pin headers of the middle layer circuit board 9 are inserted into the three multi-hole sockets of the lower layer circuit board 10. This serves to both fix the upper layer circuit board 8 and the middle layer circuit board 9, and to connect the power supply and transmit signals. The lower layer circuit board 10 is mounted on the base 2 and is fixed to the base 2 by multiple small screws, so that the upper layer circuit board 8, the middle layer circuit board 9 and the lower layer circuit board 10 are all firmly assembled inside the casing of the whole machine.

[0026] like Figure 3 The diagram shown is a circuit block diagram of an intelligent surge monitoring device for a power supply lightning protection system according to this utility model. There are eight terminals in each of the front terminal 3 and rear terminal 4. The right pair of terminals in the front terminal 3 are power input terminals, externally connected to the L and N lines of the input power supply, and internally connected to the power module 10a, providing power to all internal circuits of the device. The middle and left terminals in the front terminal 3 are empty. The three terminals on the left side of the rear terminal 4 are two pairs of remote signaling switch sampling terminals, from left to right: common terminal G, remote signaling terminal one Y, and remote signaling terminal two Y. These two pairs of remote signaling switch sampling terminals are externally connected to the surge protector failure contact and the backup protector tripping point, respectively. The contacts are used to sense the working status of the surge protector and the backup protector, and are internally connected to the switch quantity sampling module 10b; the middle pair of terminals in the rear row of terminals 4 are RS-communication terminals, where A is the positive communication terminal and B is the negative communication terminal, which are externally connected to the background communication management machine in the computer room and internally connected to the communication module 10c for communication transmission and reception of this utility model device; the right pair of terminals in the rear row of terminals 4 are analog quantity acquisition terminals, where AI- is the negative signal terminal and AI+ is the positive signal terminal, which are externally connected to the temperature sensor probe and internally connected to the analog quantity sampling module 10d, which can sense the temperature rise change of the external surge protection device and achieve the purpose of monitoring the operation of the main surge protection device.

[0027] The power input terminal in front terminal 3 connects the external operating power supply to the lower circuit board 10 and then to the input terminal of the power module 10a. The power module 10a converts the AC power into low-voltage DC power and outputs it through the lower-middle connector 12 and the upper-middle connector 11, respectively connecting to the central processing unit 9a, storage module 9b, clock module 9c, isolation module 9d, digital quantity sampling module 10b, communication module 10c, analog quantity sampling module 10d, LCD, display driver module 8b, and voltage limiting module 8e, providing stable power to these circuit modules. The power supply is as follows: The output ports of the central processing unit 9a are connected to the storage module 9b, clock module 9c, isolation module 9d, download port 9e, communication module 10c, analog sampling module 10d, display driver module 8b, indicator light group 8c, button group 8d, and voltage limiting module 8e, respectively. The central processing unit 9a is the core of the entire circuit. After the pre-programmed control program is loaded through the download port 9e, it executes various functions. The storage module 9b provides space for the central processing unit 9a to store data, and the clock module 9c provides the clock base for the central processing unit 9a. The isolation module 9d is also connected to the digital input sampling module 10b. Because the external digital input signal level fluctuates and is subject to interference, it must be sampled and isolated before being input to the central processing unit 9a to ensure the safe operation of the circuit chips. The communication module 10c is used for level matching and data transmission / reception when the central processing unit 9a communicates with external devices. The analog input sampling module 10d amplifies and compares the acquired external temperature probe signal to determine the operating status of the external device. The display driver module 8b is also connected to the LCD screen 8a; the display signal from the central processing unit 9a must pass through the display driver module 8b to enable the LCD screen to function properly. The indicator light group 8c is directly driven by the central processing unit 9a and illuminates as needed. The button group 8d sends the operation signals of each button to the central processing unit 9a to complete the human-machine interface. The voltage limiting module 8e limits the current signal transmitted from the sensing probe via the probe cable 6a, ensuring that externally induced lightning current or leakage current from lightning protection devices can be converted into appropriate level signals for the central processing unit 9a to read, analyze, and process.

[0028] This utility model designs a monitoring device for use in a power supply surge protection system. It adopts a control circuit with a central processing unit 9a as the core and combines a three-layer connected circuit board. It integrates lightning current signal acquisition, leakage current signal acquisition, switch signal acquisition, analog signal acquisition, and remote communication functions. It can monitor the pattern of lightning activity and detect the status of devices and equipment in the power supply surge protection system. It can provide early warning of damage caused by lightning activity and failure of surge protection equipment, reminding managers to do a good job of prevention and maintenance in a timely manner, and providing a reliable guarantee for the safe operation of the power supply surge protection system.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An intelligent surge monitoring device for a power supply lightning protection system, characterized in that, The device includes an outer casing, which comprises an upper cover (1) and a base (2). Inside the casing are installed an upper circuit board (8), a middle circuit board (9), and a lower circuit board (10). The upper circuit board (8) houses a liquid crystal display (8a), a display driver module (8b), an indicator light group (8c), a button group (8d), a voltage limiting module (8e), a probe interface (5), and a lightning sensing probe (6). The middle circuit board (9) houses a central processing unit (9a), a storage module (9b), a clock module (9c), an isolation module (9d), and a download port (9e). The lower circuit board (8a)... 10) contains a power module (10a), a digital input sampling module (10b), a communication module (10c), an analog input sampling module (10d), front terminals (3), and rear terminals (4); the upper circuit board (8) and the middle circuit board (9) are electrically connected through a middle-upper connector (11), and the middle circuit board (9) and the lower circuit board (10) are electrically connected through a middle-lower connector (12); the lower opening of the upper cover (1) and the upper opening of the base (2) are respectively provided with a buckle (1a) on both sides, and the upper cover (1) and the base (2) are assembled by fastening each other through the buckles (1a) on both sides; A mounting pin (7) is inserted into the rear side of the base (2). A mounting slot (2a) is provided in the middle of the lower part of the base (2). The mounting slot (2a) is used to mount the whole machine onto the guide rail inside the lightning protection cabinet. The mounting pin (7) is pushed inward to fix the whole machine.

2. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The liquid crystal display screen (8a) is embedded in the center of the front of the upper cover (1). The indicator light group (8c) consists of four light-emitting diodes, which are arranged horizontally and embedded below the liquid crystal display screen (8a). The button group (8d) consists of four micro-switches, which are arranged horizontally and embedded below the indicator light group (8c). The probe interface (5) is connected to an external sensing probe through a probe cable (6a).

3. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The front terminal (3) is soldered to the front side of the lower circuit board (10), and the rear terminal (4) is soldered to the rear side of the lower circuit board (10). The outer side of the front terminal (3) is provided with a front terminal interface (3a) leading to the interior. A front terminal screw (3b) is provided above the front terminal (3). The outer side of the rear terminal (4) is provided with a rear terminal interface (4a) leading to the interior. A rear terminal screw (4b) is provided above the rear terminal (4). The front terminal interface (3a) and the front terminal screw (3b) of the front terminal (3) are respectively embedded and exposed on the front side of the upper cover (1). The rear terminal interface (4a) and the rear terminal screw (4b) of the rear terminal (4) are respectively embedded and exposed on the rear side of the upper cover (1).

4. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The upper circuit board (8) and the middle circuit board (9) are electrically connected by a middle-upper connector (11). The middle-upper connector (11) consists of a pin header and a socket. The two pin headers are soldered to the bottom surface of the upper circuit board (8), and the two sockets are soldered to the top surface of the middle circuit board (9). There are three middle-lower connectors (12) that are electrically connected between the middle circuit board (9) and the lower circuit board (10). The middle-lower connector (12) consists of a multi-pin header and a multi-hole socket. The three multi-pin headers are soldered to the bottom surface of the middle circuit board (9), and the three multi-hole sockets are soldered to the top surface of the lower circuit board (10). The lower circuit board (10) is mounted on the top of the base (2).

5. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, Each of the front row terminals (3) and the rear row terminals (4) has eight wiring terminals. The right pair of terminals of the front row terminals (3) are power input terminals, which are connected to the L and N lines of the external power supply. The middle and left terminals of the front row terminals (3) are empty. The three left terminals of the rear row terminals (4) are two pairs of remote signaling switch quantity sampling terminals, which are, from left to right, common terminal G, remote signaling terminal one Y and remote signaling terminal two Y.

6. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The middle pair of terminals in the rear terminal (4) are RS-communication terminals, and the right pair of terminals in the rear terminal (4) are analog signal acquisition terminals, which are externally connected to a temperature sensor probe and internally connected to an analog signal sampling module (10d).

7. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The power input terminal in the front terminal (3) connects the external working power supply to the lower circuit board (10) and then to the input terminal of the power module (10a). The power module (10a) converts the AC power supply into a low-voltage DC power supply and then connects to the central processing unit (9a), storage module (9b), clock module (9c), isolation module (9d), switch quantity sampling module (10b), communication module (10c), analog quantity sampling module (10d), liquid crystal display, display driver module (8b) and voltage limiting module (8e) through the lower middle layer connector (12) and the upper middle layer connector (11), respectively.

8. The intelligent surge monitoring device for a power supply lightning protection system according to claim 1, characterized in that, The output ports of the central processing unit (9a) are respectively connected to the storage module (9b), clock module (9c), isolation module (9d), download port (9e), communication module (10c), analog sampling module (10d), display driver module (8b), indicator light group (8c), button group (8d), and voltage limiting module (8e). The isolation module (9d) is connected to the switch sampling module (10b), the display driver module (8b) is connected to the liquid crystal display screen (8a), the indicator light group (8c) is directly driven by the central processing unit (9a) and illuminates as needed; the button group (8d) sends the operation signals of each button to the central processing unit (9a), and the voltage limiting module (8e) limits the amplitude and current of the current signal transmitted from the sensing probe through the probe cable (6a).

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