Lightning protection digital isolator

Abstract

The utility model relates to the technical field of intelligent sharp main machines, and discloses a lightning protection digital isolator which comprises a shell, an indicating lamp is fixedly connected to the outer surface of the front end of the shell, and a groove is formed in the outer surface of the upper end of the shell. By arranging the lightning protection circuit assembly, the plug can be quickly connected with the serial interface, the situation that the serial interface and the plug are loosened after connection, and poor contact is caused is prevented, and by arranging the lightning protection circuit assembly, damage caused by lightning stroke to a host can be effectively avoided. Meanwhile, serial communication with external equipment (a vehicle-mounted electronic scale and an electronic display board) can be achieved, the requirements for on-site vehicle weighing and the electronic display board are met, chip-level devices are adopted, the size is small, the price is low, the integration degree is high, the problems of high cost, large size, multiple protection and the like are effectively solved, and better use prospects can be brought.

Description

Technical Field

[0001] The utility model relates to the technical field of Zhiruitong host computers, in particular to a lightning protection digital isolator. Background Art

[0002] Zhiruitong host (Erlangshen) is a computer device with flexible configuration, extreme performance and compact size. Zhiruitong host covers multiple fields such as AI acceleration, image, video processing technology, etc., and is suitable for various application fields such as smart medical care, machine vision, national defense and military industry. Its products have the characteristics of spatial modularization, standardization, miniaturization, high computing power, high reliability and stability and durability, and comply with the standards and specifications of different industries. Since the Erlangshen host uses a ready-made Zhiruitong host, but Erlangshen is placed outside, the on-board electronic scales and electronic display boards that communicate with it are all used outdoors.

[0003] However, it still has some shortcomings. For example, the serial interface of the traditional Zhiruitong host (Erlangshen) has no lightning protection design. In thunderstorms, it is easily struck by lightning, causing damage to the host, making it unable to be used normally, and greatly reducing the service life of the host. At the same time, when the digital isolator is connected to the device, when the serial interface is connected to the plug, most of the time the plug is inserted into the interface. Due to contact between the plug and the interface during operation or after long-term use, the plug will become loose and fall off the interface, causing poor contact and making it impossible to make a normal electrical connection with the host.

[0004] In order to solve the above problems, this application proposes a lightning protection digital isolator. Utility Model Content

[0005] The purpose of the present utility model is to provide a lightning protection digital isolator to solve the problem that the traditional Zhiruitong host serial interface in the prior art proposed in the above background technology has no lightning protection design, is easily struck by lightning in thunderstorms, and causes damage to the host, resulting in the host being unable to be used normally, greatly reducing the service life of the host; and when the serial interface is connected to the plug, most of the time the plug is inserted into the interface. Due to the contact between the plug and the interface during operation or after long-term use, the plug will become loose and fall off the interface, causing poor contact and the like, making it impossible to make a normal electrical connection with the host.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a lightning protection digital isolator, comprising a shell, an indicator light fixedly connected to the front end outer surface of the shell, a groove provided on the upper end outer surface of the shell, a serial interface fixedly connected to the upper end outer surface of the groove, a detachable component fixedly connected to the upper end outer surface of the shell, and a plug detachably connected to the upper end outer surface of the serial interface.

[0007] Preferably, the detachable component includes a connecting block, a slot, a T-shaped movable block, a telescopic rod, a sleeve, a spring and a limit slot. The connecting block is fixedly connected to the left and right outer walls of the plug. A slot is provided on one outer surface of the connecting block. The upper outer surface of the shell is movably connected with a T-shaped movable block. The outer surface of one side of the T-shaped movable block is fixedly connected with the telescopic rod.

[0008] Preferably, the outer surface of one end of the telescopic rod is movably connected to a sleeve, the outer walls of the telescopic rod and the sleeve are provided with a spring, and the telescopic rod, sleeve and spring are all located in the inner surface of the outer shell, a limiting groove is provided on the outer surface of the upper end of the outer shell, and the inner surface of the limiting groove is movably connected to a T-shaped movable block.

[0009] Preferably, a serial lightning protection circuit assembly is provided on the inner surface of the shell, and the serial lightning protection circuit assembly includes a serial interface, a thermistor, a discharge tube, a TVS diode, a capacitor, an inductor, a serial chip, a digital isolator, a level conversion, an NX controller and other parts. The serial interface is used to electrically connect with an external device, and the thermistor, discharge tube, TVS diode, capacitor, inductor, serial chip, digital isolator, level conversion and NX controller are all fixedly connected to the circuit board inside the shell.

[0010] Preferably, the thermistor can eliminate the impact caused by the short circuit of the discharge tube and the TVS diode, the discharge tube is used to absorb larger surges, the TVS diode is used to further absorb the remaining excessive voltage, the capacitor can play a certain role in common-mode suppression, the inductor further suppresses common-mode surges, and the serial chip is used for serial level conversion.

[0011] Preferably, the digital isolator is used to isolate the digital signal on the controller side from the serial chip to further protect the control side. The level conversion is used to convert the power supply 1.8V of the NX controller into 3.3V of the serial output side, and the NX controller is the controller unit of the Zhiruitong host.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a detachable component, and first the plug is inserted into the groove to connect with the serial interface in the groove. After the insertion, the T-shaped movable clamping block is manually moved to make the clamping slot in the connecting block inserted into the groove be clamped and connected with the T-shaped movable clamping block, the T-shaped movable clamping block is clamped in the clamping slot, and then the T-shaped movable clamping block on the other side is also clamped into the clamping slot, so that the plug and the serial interface can be quickly connected, and looseness between the serial interface and the plug is prevented after the connection is completed, resulting in poor contact and the like.

[0014] The utility model provides a serial lightning protection design through the lightning protection circuit assembly, which is designed through some electronic components such as discharge tubes, thermistors, TVS diodes, capacitors, inductors, serial chip units, digital isolators, level conversion, NX controllers, etc., which can effectively avoid damage to the host computer caused by lightning strikes. At the same time, it can also realize serial communication with external devices (on-board electronic scales and electronic display boards), meeting the needs of on-site vehicle weighing and electronic display boards. In addition, chip-level devices are used, which are small in size, low in price, and highly integrated, effectively solving the problems of high cost, volume, and multiple protections. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a lightning protection digital isolator of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a detachable component in a lightning protection digital isolator of the utility model;

[0017] Figure 3 This is a partial structural diagram of a detachable component in a lightning protection digital isolator of the utility model;

[0018] Figure 4 The utility model is a structural schematic diagram of a serial lightning protection circuit component in a lightning protection digital isolator.

[0019] In the figure: 1. Housing; 2. Indicator light; 3. Groove; 4. Serial interface; 5. Removable component; 6. Plug; 7. Connecting block; 8. Card slot; 9. T-shaped movable card block; 10. Telescopic rod; 11. Sleeve; 12. Spring; 13. Limit slot; 14. Serial lightning protection circuit assembly; 15. Thermistor; 16. Discharge tube; 17. TVS diode; 18. Capacitor; 19. Inductor; 20. Serial chip; 21. Digital isolator; 22. Level conversion; 23. NX controller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-Figure 2 The utility model provides a technical solution: a lightning protection digital isolator, including a shell 1, an indicator light 2 is fixedly connected to the front end outer surface of the shell 1, a groove 3 is opened on the upper end outer surface of the shell 1, a serial interface 4 is fixedly connected to the upper end outer surface of the groove 3, a detachable component 5 is fixedly connected to the upper end outer surface of the shell 1, and a plug 6 is detachably connected to the upper end outer surface of the serial interface 4.

[0022] In this embodiment, Figure 2-Figure 3 As shown, the detachable component 5 includes a connecting block 7, a slot 8, a T-shaped movable block 9, a telescopic rod 10, a sleeve 11, a spring 12 and a limiting groove 13. The connecting block 7 is fixedly connected to the left and right outer walls of the plug 6, and a slot 8 is provided on one outer surface of the connecting block 7. The outer surface of the upper end of the shell 1 is movably connected with a T-shaped movable block 9, and the outer surface of one side of the T-shaped movable block 9 is fixedly connected to the telescopic rod 10. The outer surface of one end of the telescopic rod 10 is movably connected with the sleeve 11. The outer walls of the telescopic rod 10 and the sleeve 11 are sleeved with a spring 12, and the telescopic rod 10, the sleeve 11 and the spring 12 are all located on the inner surface of the shell 1. A limiting groove 13 is provided on the upper outer surface of the shell 1, and the inner surface of the limiting groove 13 is movably connected with the T-shaped movable block 9. Through the provided limiting groove 13, the T-shaped movable block 9 can be restricted in the limiting groove 13 provided on the upper outer surface of the shell 1, so that it is more stable when moving the T-shaped movable block 9.

[0023] In this embodiment, Figure 4As shown, the inner surface of the housing 1 is provided with a serial lightning protection circuit assembly 14, which includes a serial interface 4, a thermistor 15, a discharge tube 16, a TVS diode 17, a capacitor 18, an inductor 19, a serial chip 20, a digital isolator 21, a level converter 22, an NX controller 23 and the like. The serial interface 4 is used to electrically connect to an external device. The thermistor 15, the discharge tube 16, the TVS diode 17, the capacitor 18, the inductor 19, the serial chip 20, the digital isolator 21, the level converter 22 and the NX controller 23 are all fixedly connected to the circuit board inside the housing 1. The thermistor 15 can eliminate the effect caused by the short circuit of the discharge tube 16 and the TVS diode 17. The discharge tube 16 is used to absorb larger surges, the TVS diode 17 is used to further absorb the remaining excessive voltage, the capacitor 18 can play a certain role in common-mode suppression, and the inductor 19 further suppresses common-mode surges. The serial chip 20 is used for serial level conversion, and the digital isolator 21 is used to isolate the digital signal of the controller end from the serial chip 20, further protecting the control end. The digital isolator 21 is set up to effectively protect the controller end. Even if there is an abnormality in the output end, it will not cause the controller end to freeze or be damaged. The level conversion 22 is used to convert the power supply 1.8V of the NX controller 23 into 3.3V of the serial output end, and the NX controller 23 is the controller unit of the Zhiruitong host.

[0024] Working principle:

[0025] A lightning protection digital isolator, when in use, through the provided detachable component 5, first insert the plug 6 into the groove 3 and connect it with the serial interface 4 in the groove 3, after insertion, manually move the T-shaped movable card block 9, so that the card slot 8 in the connection block 7 inserted into the groove 3 is connected with the T-shaped movable card block 9, the T-shaped movable card block 9 is stuck in the card slot 8, and then the T-shaped movable card block 9 on the other side is also stuck in the card slot 8, so that the plug 6 can be quickly connected to the serial interface 4, preventing the serial interface 4 and the plug 6 from loosening after the connection is made, causing poor contact and the like, and connecting to the Zhiruitong host (Erlangshen) After that, a serial lightning protection design is designed through the serial lightning protection circuit assembly 14, the discharge tube 16, thermistor 15, TVS diode 17, capacitor 18, inductor 19, serial chip 20, digital isolator 21, level conversion 22, NX controller 23 and other electronic components. It can effectively avoid damage to the host caused by lightning strikes. At the same time, it can also realize serial communication with external devices (on-board electronic scales and electronic display boards), meeting the needs of on-site vehicle weighing and electronic display boards, and using chip-level devices with small size, low price and high integration, effectively solving problems such as high cost, volume and multiple protection.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A lightning protection digital isolator, comprising a housing (1), characterized in that: An indicator light (2) is fixedly connected to the front outer surface of the housing (1), a groove (3) is provided on the upper outer surface of the housing (1), a serial interface (4) is fixedly connected to the upper outer surface of the groove (3), a detachable component (5) is fixedly connected to the upper outer surface of the housing (1), and a plug (6) is detachably connected to the upper outer surface of the serial interface (4).

2. The lightning protection digital isolator according to claim 1, characterized in that: The detachable component (5) comprises a connecting block (7), a slot (8), a T-shaped movable block (9), a telescopic rod (10), a sleeve (11), a spring (12) and a limiting slot (13); the connecting block (7) is fixedly connected to the left and right outer walls of the plug (6); a slot (8) is provided on one outer surface of the connecting block (7); the upper outer surface of the housing (1) is movably connected to the T-shaped movable block (9); and the outer surface of one side of the T-shaped movable block (9) is fixedly connected to the telescopic rod (10).

3. The lightning protection digital isolator according to claim 2, characterized in that: The outer surface of one end of the telescopic rod (10) is movably connected to a sleeve (11), the outer walls of the telescopic rod (10) and the sleeve (11) are sleeved with a spring (12), and the telescopic rod (10), the sleeve (11), and the spring (12) are all located in the inner surface of the shell (1), the outer surface of the upper end of the shell (1) is provided with a limiting groove (13), and the inner surface of the limiting groove (13) is movably connected to a T-shaped movable block (9).

4. The lightning protection digital isolator according to claim 1, characterized in that: A serial lightning protection circuit assembly (14) is provided on the inner surface of the housing (1), and the serial lightning protection circuit assembly (14) includes a serial interface (4), a thermistor (15), a discharge tube (16), a TVS diode (17), a capacitor (18), an inductor (19), a serial chip (20), a digital isolator (21), a level converter (22), and an NX controller (23). The serial interface (4) is used to electrically connect to an external device, and the thermistor (15), the discharge tube (16), the TVS diode (17), the capacitor (18), the inductor (19), the serial chip (20), the digital isolator (21), the level converter (22), and the NX controller (23) are all fixedly connected to a circuit board inside the housing (1).

5. The lightning protection digital isolator according to claim 4, characterized in that: The thermistor (15) can eliminate the influence caused by the short circuit of the discharge tube (16) and the TVS diode (17); the discharge tube (16) is used to absorb a large surge; the TVS diode (17) is used to further absorb the remaining excessive voltage; the capacitor (18) can play a certain role in common mode suppression; the inductor (19) further suppresses the common mode surge; and the serial chip (20) is used for serial level conversion.

6. The lightning protection digital isolator according to claim 4, characterized in that: The digital isolator (21) is used to isolate the digital signal of the controller end from the serial chip (20) to further protect the control end. The level converter (22) is used to convert the power supply 1.8V of the NX controller (23) into 3.3V of the serial output end, and the NX controller (23) is the controller unit of the Zhiruitong host.

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