Power grid AID terminal detection equipment capable of resisting strong electromagnetic interference

Abstract

The utility model discloses power grid AID terminal detection equipment capable of resisting strong electromagnetic interference, and belongs to the technical field of detection equipment. The detection device comprises an AID housing, a circuit board, a transmission cable, a camera, a shielding member and a circuit network. One end of the transmission cable is connected with the camera, the other end of the transmission cable is connected with the AID shell, and the circuit board is installed in the AID shell; the two ends of the circuit network are connected with the corresponding grounding ends of the circuit board and the AID shell respectively, and the circuit network is used for blocking direct connection between the ground and the circuit board in the strong magnetic environment and dredging charges on the AID shell and the circuit board. The shielding piece is arranged on the periphery of the transmission cable in a sleeving mode and used for blocking interference of strong magnetism on the transmission cable. According to the utility model, the structural design on the hardware level is carried out on the detection equipment, so that the interference influence on the detection equipment caused by a strong magnetic environment is effectively avoided.

Description

TECHNICAL FIELD

[0001] The application relates to an anti-strong electromagnetic interference power grid AID terminal detection device and belongs to the technical field of detection devices. BACKGROUND

[0002] Based on the current application scene of the power grid Internet of Things, AID terminal intelligent devices are used to detect real-time data of each electric meter and report the real-time data to a client for real-time monitoring. However, due to the strong electromagnetic field interference around the power grid, the AID terminal intelligent devices cannot work normally, and the monitoring interference has the following influences on the intelligent devices.

[0003] The strong magnetic field can interfere with the electronic components, such as sensors and data processing units, in the intelligent electric meter, causes deviation of the measured data, and further affects the accuracy of the real-time data collected by the AID terminal intelligent device, and further causes inaccurate electric charge calculation and affects the electricity cost of the user; long-term strong magnetic interference can cause the performance of the intelligent electric meter and related devices to decrease, the operation to be unstable, and even faults to occur, and further affects the monitoring and management of the entire power grid; the strong magnetic field can also induce fire safety hazards and threatens the life and property safety of the user.

[0004] Therefore, it is urgent to provide an intelligent detection device capable of avoiding strong electromagnetic interference to effectively solve the related problems in the prior art. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing an anti-strong electromagnetic interference power grid AID terminal detection device, which is designed to effectively reduce the interference of the strong magnetic field of the power grid on the related detection device from the hardware level.

[0006] To solve the above technical problems, the utility model is implemented by adopting the following technical scheme:

[0007] The utility model provides an anti-strong electromagnetic interference power grid AID terminal detection device, which comprises an AID shell, a circuit board, a transmission cable, a camera, a shielding piece and a circuit network.

[0008] One end of the transmission cable is connected with the camera, and the other end is connected with the AID shell, and the circuit board is installed in the AID shell;

[0009] The two ends of the circuit network are connected with the grounding ends of the circuit board and the AID shell respectively, are used for blocking the direct connection between the ground in the strong magnetic environment and the circuit board, and are used for dredging the electric charges on the AID shell and the circuit board;

[0010] The shielding piece is sleeved on the outer periphery of the transmission cable and is used for blocking the interference of the strong magnetic field on the transmission cable.

[0011] The application is from the hardware design level, by adopting the blocking mode, to solve the interference caused by the transmission cable of the camera, and by adopting the blocking and dredging mode, to solve the interference caused by entering the AID shell, and the problems of device restart, transmission interruption and picture noise and other abnormal working problems of the Internet of Things terminal device in the strong electromagnetic interference application scene are solved effectively, and the practicability is high.

[0012] Optionally, the circuit network comprises: a parallel circuit formed by a resistor and a capacitor in parallel; one end of the parallel circuit is connected with the ground end of the circuit board through a wire, and the other end is connected with the ground end of the AID shell through a wire.

[0013] Optionally, one end of the shielding member is detachably connected with the AID shell, so that the shielding member is conveniently and detachably connected, and the maintenance and upgrading of the device are facilitated.

[0014] Optionally, the shielding member is a metal shielding net, which is used for ventilation and heat dissipation, and inhibits capacitive coupling and reduces the influence of static electricity on the device.

[0015] Optionally, the shielding member is a high-permeability shielding body, which is used for inhibiting inductive coupling and preventing magnetic field interference.

[0016] Optionally, the resistance value of the grounding wire is set to 3Ω, so that the resistance value of the grounding wire is controlled within a reasonable range, and the bearing capacity of the high-level electric difference and the cumulative load generated by the operation of the electronic communication device is maximized.

[0017] Optionally, the strong electromagnetic interference resistant electric network AID terminal detection device further comprises a filter connected with the grounding wire, which is used for filtering high-frequency interference signals.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] The application is used for solving the interference caused by the transmission cable of the camera, by adopting the corresponding shielding member on the outer layer of the transmission cable, so that the strong magnetic interference is blocked from entering the transmission cable; meanwhile, the application is also used for solving the interference caused by entering the AID shell by adopting the blocking and dredging mode, and by connecting a high-voltage capacitor and a parallel resistor between the ground of the circuit board and the ground of the AID shell, the strong magnetic field interference is isolated, not only the strong magnetic field interference caused by the direct connection between the ground of the AID device and the ground of the circuit board in the strong magnetic field environment is avoided, but also the dredging channel formed by the related circuit can weaken the abnormal working of the device caused by the long-time charge accumulation of the circuit board and the shell, and the device damage rate is significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1The utility model discloses an anti strong electromagnetic interference's electric network AID terminal detection equipment corresponding to the structural schematic diagram of prior art detection equipment of the utility model shows the interference path causal relationship reasoning schematic diagram of the utility model,

[0021] Figure 2 The utility model discloses an anti strong electromagnetic interference's electric network AID terminal detection equipment corresponding to the structural schematic diagram of prior art detection equipment of the utility model shows the interference path causal relationship reasoning schematic diagram of the utility model,

[0022] Figure 3 The utility model discloses an anti strong electromagnetic interference's electric network AID terminal detection equipment corresponding to the structural schematic diagram of prior art detection equipment of the utility model shows the interference path causal relationship reasoning schematic diagram of the utility model,

[0023] In the drawing: 1-AID shell, 2-circuit board, 3-transmission cable, 4-camera, 5-shield, 6-resistor, 7-capacitor, 8-strong electromagnetic field source. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the drawings. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model. EMBODIMENT

[0025] The embodiment introduces an anti strong electromagnetic interference's electric network AID terminal detection equipment, which comprises: an AID shell 1, a circuit board 2, a transmission cable 3, a camera 4, a shield 5 and a circuit network.

[0026] One end of the transmission cable 3 is connected with the camera 4, and the other end is connected with the AID shell 1, and the circuit board 2 is installed in the AID shell 1;

[0027] The two ends of the circuit network are connected with the grounding ends of the circuit board 2 and the AID shell 1 respectively, for blocking the direct connection between the ground in a strong magnetic environment and the circuit board 2, and for dredging the electric charges on the AID shell 1 and the circuit board 2.

[0028] The shield 5 is sleeved on the outer periphery of the transmission cable 3, for blocking the interference of strong magnetism on the transmission cable 3.

[0029] In the specific application of the embodiment, on the one hand, the shield 5 made of conductive or magnetic material surrounds the interference source or interference object, thereby cutting off or weakening the spatial coupling channel of the interference field and preventing the transmission of electromagnetic energy; on the other hand, a high-voltage capacitor and a parallel resistor circuit is innovatively added between the grounding end of the circuit board 2 and the grounding end of the AID shell 1, to further effectively isolate the strong interference of the magnetic field, and the structure design is compact and has strong anti-interference ability. EMBODIMENT

[0030] REFERENCE Figure 1, the existing Internet of Things terminal AID device in the actual application process will be photographed by the camera 4, thereby transmitting real-time pictures to the client. However, the Internet of Things terminal application scene is mostly in the power grid environment of high electromagnetic interference, which can cause the related AID terminal device to not maintain a normal working state in the power grid strong magnetic field interference environment, thereby causing unnecessary monitoring trouble to the user.

[0031] The above interference process can generally affect the circuit board in the AID device through two transmission paths. One is through the transmission cable 3 of the camera 4, and the other is through the AID shell 1. Both paths can affect the normal operation of the Internet of Things terminal device to some extent, causing device restart, transmission interruption, and generation of abnormal working phenomena such as picture noise.

[0032] In the actual application process, the changing strong magnetic field interferes with the normal operation of the circuit on the circuit board 2 through the two paths, which can cause the single-chip microcomputer program to be disordered to different extents, the photos collected by the camera 4 to be blurred, and the potential difference caused by long-term charge accumulation on the circuit board 2, and even electrostatic discharge caused by long-term charge accumulation, thereby causing the device to be damaged.

[0033] Therefore, for the above two strong magnetic transmission paths, with reference to Figure 2 , the embodiment takes two measures of blocking and blocking and dredging in combination from two aspects to solve the strong electromagnetic field source 8 faced by the existing device.

[0034] As shown in Figure 3 , first, for the interference caused by the transmission cable 3 of the camera 4, a blocking method is adopted to resist strong magnetic interference. Specifically, a corresponding shielding member 5 is sleeved on the outer layer of the transmission cable 3 to effectively block the strong magnetic interference from entering the transmission cable 3.

[0035] Among them, the shielding member 5 can be a metal shielding net, which is used for ventilation and heat dissipation, and for suppressing capacitive coupling and reducing the influence of static electricity on the device. In addition, the shielding member 5 can also be a high-permeability shielding body, which is used for suppressing inductive coupling to prevent magnetic field interference. Regardless of which shielding device is selected, in a strong electromagnetic environment, the corresponding shielding member can protect the internal circuit and elements of the device from damage caused by electromagnetic pulses and electromagnetic radiation, thereby prolonging the service life of the device. At the same time, by reducing electromagnetic interference, the shielding member can also ensure that the device obtains more accurate and reliable data during measurement.

[0036] Secondly, for the interference caused by entering the AID machine shell 1, a blocking and dredging method is adopted to resist strong magnetic interference. Specifically, a circuit net is connected between the ground of the circuit board 2 and the ground of the AID machine shell 1 to isolate the strong magnetic field interference.

[0037] The circuit network comprises a parallel circuit formed by the resistor 6 and the capacitor 7 in parallel.

[0038] One end of the parallel circuit is connected to the ground end of the circuit board 2 through a wire, and the other end is connected to the ground end of the AID shell 1 through a wire. The design of the circuit network not only avoids the direct connection between the ground of the strong magnetic field and the ground of the AID device circuit board 2, thereby effectively filtering out the interference of the strong magnetic field, but also establishes a corresponding dredging channel, so that the device does not work abnormally and the device is damaged due to long-term charge accumulation of the circuit board 2 and the AID shell 1.

[0039] In addition, the shielding piece 5 can be fixedly connected with the AID shell 1 by welding, and can also be detachably connected with one end of the AID shell 1. In the embodiment, detachable connection is preferred, which can facilitate the maintenance and upgrading of the device. The strong electromagnetic interference resistant electric network AID terminal detection device further comprises a filter connected with the wire for filtering high-frequency interference signals.

[0040] It is worth noting that the resistance of the wire can be set to 3Ω, and the resistance of the wire is controlled within a reasonable range, which is beneficial to the bearing capacity of the high-level electric difference and the cumulative load generated by the operation of the electronic communication device.

[0041] In the description of the present disclosure / the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are used only to explain the relative position relationship, movement condition and the like between the components in a certain posture. If the specific posture changes, the directional indication also changes accordingly. It is only for the convenience of describing the present disclosure / the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure / the present application.

[0042] In the description of the present disclosure / the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure / the present application can be understood according to the specific circumstances.

[0043] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should also be considered as the protection scope of the present application.

Claims

1. A power grid AID terminal detection device resistant to strong electromagnetic interference, characterized by, Include: AID shell (1), circuit board (2), transmission cable (3), camera (4), shielding (5) and circuit network; One end of the transmission cable (3) is connected with the camera (4), the other end is connected with the AID shell (1), the AID shell (1) is internally mounted with the circuit board (2); The two ends of the circuit network are respectively connected with the corresponding grounding ends of the circuit board (2) and the AID shell (1), for blocking the direct connection of the earth and the circuit board (2) in the strong magnetic environment, and for dredging the electric charge on the AID shell (1) and the circuit board (2); The shielding (5) is sleeved on the outer periphery of the transmission cable (3), for blocking the interference of strong magnet on the transmission cable (3).

2. The power grid AID terminal detection device against strong electromagnetic interference according to claim 1, characterized by, The circuit network includes: a parallel circuit formed by a resistor (6) and a capacitor (7) in parallel; One end of the parallel circuit is connected with the grounding end of the circuit board (2) through a wire, and the other end is connected with the grounding end of the AID shell (1) through a wire.

3. The power grid AID terminal detection device against strong electromagnetic interference according to claim 1, characterized by, One end of the shielding (5) and the AID shell (1) is detachably connected.

4. The power grid AID terminal detection device of claim 1, wherein The shielding (5) is a metal shielding net, which is used for ventilation and heat dissipation, and inhibits capacitive coupling.

5. The power grid AID terminal detection device of claim 1, wherein The shielding (5) is a high permeability shielding body, which is used for inhibiting inductive coupling.

6. The power line AID terminal detection device according to claim 2, wherein The resistance of the wire is set to 3Ω.

7. The power line AID terminal detection device according to claim 2, wherein It also includes a filter connected with the wire for filtering out high-frequency interference signals.

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