An exit platen voltage monitoring sensor and voltage monitoring system

Abstract

The utility model relates to the technical field of power grid export pressure plate state monitoring, more particularly to a kind of export pressure plate voltage monitoring sensor, including upper shell assembly, PCB board, FPC flexible plate and shell assembly;The upper shell assembly is rotatably connected with shell assembly, when the upper shell assembly and shell assembly are closed, the through-hole for the circumferential clamping of pressure plate connecting cable is equipped between the upper shell assembly and shell assembly;At least part of the outer surface of the FPC flexible plate is arranged on the through-hole between the upper shell assembly and shell assembly, the inner surface of the FPC flexible plate is whole circle adhering package to the pressure plate connecting cable passing through the through-hole;The PCB board is arranged in shell assembly, and at least part of the inner surface of the FPC flexible plate is pin and connected with the PCB board in the inside of shell assembly.

Description

Technical Field

[0001] This utility model relates to the field of power grid outlet pressure plate status monitoring technology, and more specifically, to an outlet pressure plate voltage monitoring sensor and voltage monitoring system. Background Technology

[0002] Currently, most existing outlet pressure plate monitoring systems use the principle of magnetic induction, which indirectly monitors the engagement and disengagement status of the outlet pressure plate by utilizing the attitude changes of the outlet pressure plate, thereby judging the engagement and disengagement status of the outlet pressure plate. Although the magnetic induction method can complete the basic monitoring of the outlet pressure plate status, this scheme is not very accurate and cannot identify the loose connection status of the outlet pressure plate, which is prone to misjudgment.

[0003] Currently, other methods for substations to accurately determine the status of the outlet pressure plate before and after its activation or deactivation are becoming increasingly consistent. Generally, on-site personnel use multimeters and other meters to measure the voltage at the upper and lower ends of the outlet pressure plate and determine the status of the outlet pressure plate based on the measured voltage values. However, this operation method can easily affect the normal operation of the secondary protection circuit, the normal operation of the primary equipment, and can also easily lead to accidents.

[0004] Some existing market solutions use vibration capacitors to monitor small DC signal voltage data, but these solutions do not effectively solve the problems of installation and monitoring performance.

[0005] Therefore, it is necessary to propose an outlet pressure plate voltage monitoring sensor and voltage monitoring system to solve the above problems. Utility Model Content

[0006] To overcome at least one of the defects (deficiencies) of the prior art described above, this utility model provides an outlet pressure plate voltage monitoring sensor and voltage monitoring system.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: an outlet pressure plate voltage monitoring sensor and voltage monitoring system, including an upper shell assembly, a PCB board, an FPC flexible board and a housing assembly;

[0008] The upper shell assembly is rotatably connected to the housing assembly. When the upper shell assembly and the housing assembly are closed, a through hole is provided between the upper shell assembly and the housing assembly for circumferentially clamping the pressure plate connecting cable.

[0009] At least a portion of the outer surface of the FPC flexible plate is provided on the through hole between the upper shell assembly and the shell assembly, and the inner surface of the FPC flexible plate is fully wrapped around the pressure plate connecting cable passing through the through hole.

[0010] The PCB board is housed within the housing assembly. At least a portion of the inner surface of the FPC flexible board extends pins and connects to the PCB board inside the housing assembly. A through-hole is provided between the upper and lower housing assemblies for circumferentially clamping the pressure plate connecting cable. This facilitates complete clamping of the pressure plate connecting cable. The outer surface of the FPC flexible board is positioned over the through-hole between the upper and lower housing assemblies, and the inner surface of the FPC flexible board completely wraps around the pressure plate connecting cable passing through the through-hole. This configuration allows the FPC flexible board to accurately determine the on / off state of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable. This does not affect the normal operation of the secondary protection circuit or the primary equipment. During use, it can transmit the voltage signal that the outlet pressure plate voltage monitoring sensor should have in the on / off state in real time and stably. It can detect the voltage values ​​at the upper and lower ends of the outlet pressure plate voltage monitoring sensor without manual operation, ensuring safety and efficiency.

[0011] Furthermore, the upper shell assembly includes an upper cover plate, an upper shell body, an upper clamping block, a first compression spring, a countersunk screw, and a hook disposed on the upper shell body;

[0012] The upper cover plate is detachably mounted on the upper shell body by countersunk screws;

[0013] The upper shell body is provided with a communication port, and the upper clamping block is retractably mounted on the communication port;

[0014] One end of the first compression spring is mounted on the upper clamping block, and the other end is pressed against the upper cover plate. Since the upper clamping block can be telescopically mounted in the communication port of the upper shell body through the first compression spring, it can clamp the pressure plate connecting cable with a wire diameter range of φ2.0 to φ4.0. This wire diameter range almost covers the application of all power grid outlet pressure plates, and the clamping is firm and can withstand the operating force within the allowable range of engineering construction. There will be no slippage or detachment of the pressure plate connecting cable during the clamping process. In use, the FPC flexible plate determines the engagement / disengagement status of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable, thereby improving the detection accuracy and preventing misjudgment due to the loose connection status of the outlet pressure plate.

[0015] Furthermore, both the upper cover plate and the upper clamping block are provided with protrusions or grooves for fixing the first compression spring. By setting the protrusions and grooves, the first compression spring can be better fixed, and the phenomenon of displacement of the first compression spring during use can be avoided.

[0016] Furthermore, the housing assembly includes a housing, a base plate, an elastic plunger, a lower clamping block, a second compression spring, a support rib, and a sliding buckle;

[0017] The base plate is detachably mounted on the housing;

[0018] The housing is provided with a receiving groove and a connecting hole. The second compression spring is disposed in the receiving groove. The sliding buckle passes through the connecting hole and presses against the second compression spring. When the upper shell assembly is fastened to the housing assembly, the hook of the upper shell assembly is fastened to the sliding buckle of the housing assembly.

[0019] The PCB board is mounted inside the housing by supporting ribs, and the lower clamping block is mounted inside the housing.

[0020] One end of the elastic plunger is set on the base plate, and the other end is pressed against the bottom of the sliding buckle. The lower clamping block can cooperate with the upper clamping block to clamp the pressure plate connecting cable, making it clamp more firmly. The sliding buckle can be engaged with the hook on the upper shell body, thereby ensuring that the upper shell assembly can be better locked onto the shell of the shell assembly. The elastic plunger provides support for the sliding buckle.

[0021] Furthermore, the bottom of the sliding buckle is provided with a guide groove. One end of the elastic plunger is set on the base plate, and the other end is pressed into the guide groove at the bottom of the sliding buckle. The guide groove can play a guiding role. Even if the sliding buckle moves in the housing under pressure, the bottom of the sliding buckle will be tightly connected with the elastic plunger.

[0022] Furthermore, the lower pressing block is provided with a through hole for the hook to pass through. By providing a through hole for the hook to pass through on the lower pressing block, the hook can be more easily fixed on the sliding buckle.

[0023] Furthermore, the inner surfaces of both the housing and the base plate are coated with a conductive paint layer. This conductive paint layer effectively shields the external electromagnetic field from interfering with the voltage signal sensed by the outlet pressure plate voltage monitoring sensor, thereby achieving a stable output of the monitored voltage signal.

[0024] Furthermore, the outer surface of the FPC flexible board is provided with an insulating layer, and the inner surface of the FPC flexible board is attached with copper foil. The copper foil extends to the pins of the FPC flexible board, and the pins of the FPC flexible board are connected to the PCB board to form an electrical circuit. Since there is copper foil on the inner surface of the FPC flexible board, the FPC flexible board can be connected to the PCB board more stably.

[0025] Furthermore, the upper cover plate, upper shell body, upper pressing block, shell, bottom plate, supporting ribs and sliding buckle are all made of plastic material. In practical applications, the upper cover plate, upper shell body, upper pressing block, shell, bottom plate, supporting ribs and sliding buckle can also be made of other insulating materials, which are all things that those skilled in the art can easily conceive of.

[0026] This utility model also discloses a voltage monitoring system using an outlet pressure plate voltage monitoring sensor, including a pressure plate, a signal transmission line, a signal concentrator, a signal aggregation line, and a signal host.

[0027] The pressure plate is connected to the outlet pressure plate voltage monitoring sensor via a pressure plate connecting cable;

[0028] The PCB boards of multiple outlet pressure plate voltage monitoring sensors are connected to a signal concentrator via signal transmission lines. The signal concentrator is connected to a signal host via a signal aggregation line. By setting up the signal concentrator, multiple outlet pressure plate voltage monitoring sensors can be detected simultaneously, which is simple and convenient.

[0029] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0030] The outlet pressure plate voltage monitoring sensor disclosed in this utility model has a through hole between the upper shell assembly and the housing assembly for circumferentially clamping the pressure plate connecting cable. This facilitates the clamping of the pressure plate connecting cable around its circumference. The outer surface of the FPC flexible board is set on the through hole between the upper shell assembly and the housing assembly, and the inner surface of the FPC flexible board completely wraps around the pressure plate connecting cable passing through the through hole. This arrangement allows the FPC flexible board to accurately determine the on / off state of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable. This does not affect the normal operation of the secondary protection circuit or the normal operation of the primary equipment. In use, it can transmit the voltage signal that the outlet pressure plate voltage monitoring sensor should have in the on / off state in real time and stably. It can detect the voltage values ​​at the upper and lower ends of the outlet pressure plate voltage monitoring sensor without manual operation, making it safe and efficient. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the outlet pressure plate voltage monitoring sensor in this utility model when the pressure plate is clamped and the connecting cable is connected.

[0032] Figure 2 This is a schematic diagram of the outlet pressure plate voltage monitoring sensor in this utility model from another angle when the pressure plate is clamped and the connecting cable is connected.

[0033] Figure 3 This is a schematic diagram of the outlet pressure plate voltage monitoring sensor in this utility model when the upper shell assembly is open.

[0034] Figure 4 This is a schematic diagram of the outlet pressure plate voltage monitoring sensor in this utility model from another angle when the upper shell assembly is open.

[0035] Figure 5This is a schematic diagram of the structure of the outlet pressure plate voltage monitoring sensor in this utility model when the upper shell assembly is fastened to the housing assembly.

[0036] Figure 6 This is a schematic diagram of the outlet pressure plate voltage monitoring sensor after the upper cover plate is removed in this utility model.

[0037] Figure 7 This is a schematic diagram of the structure of the upper cover plate in this utility model.

[0038] Figure 8 This is a structural schematic diagram of the upper shell assembly in this utility model.

[0039] Figure 9 This is a schematic diagram of the structure of the FPC flexible plate set on the housing assembly in this utility model.

[0040] Figure 10 This is a schematic diagram of the shell assembly in this utility model.

[0041] Figure 11 This is a schematic diagram of the cross-sectional structure of the shell assembly in this utility model.

[0042] Figure 12 This is a cross-sectional structural diagram of the housing assembly from another angle in this utility model.

[0043] Figure 13 This is a schematic diagram of the cross-sectional structure of the upper shell assembly and the shell assembly when they are fastened together in this utility model.

[0044] Figure 14 This is a schematic diagram of the structure when the upper shell assembly and the shell assembly are fastened together in this utility model.

[0045] Figure 15 This is a schematic diagram of the voltage monitoring system in this utility model.

[0046] Figure 16 This is a schematic diagram of the voltage monitoring system in this utility model.

[0047] In the diagram, 1 is the upper shell assembly, 2 is the PCB board, 3 is the FPC flexible board, 4 is the shell assembly, 5 is the pressure plate connecting cable, 6 is the through hole, 7 is the pin, 8 is the upper cover plate, 9 is the upper shell body, 10 is the upper clamping block, 11 is the first compression spring, 12 is the countersunk screw, 13 is the hook, 14 is the connecting port, 15 is the protrusion, 16 is the groove, 17 is the shell, 18 is the base plate, 19 is the elastic plunger, 20 is the lower clamping block, 21 is the second compression spring, 22 is the support rib, 23 is the sliding buckle, 24 is the receiving groove, 25 is the connecting hole, 26 is the guide groove, 27 is the through hole, 28 is the conductive paint layer, 29 is the insulating layer, 30 is the copper foil, 31 is the pressure plate, 32 is the signal transmission line, 33 is the signal concentrator, 34 is the signal aggregation line, and 35 is the signal host. Detailed Implementation

[0048] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0050] like Figure 1-5As shown, an outlet pressure plate voltage monitoring sensor includes an upper shell assembly 1, a PCB board 2, an FPC flexible board 3, and a housing assembly 4. The upper shell assembly 1 and the housing assembly 4 are rotatably connected. When the upper shell assembly 1 and the housing assembly 4 are closed, a through hole 6 is provided between the upper shell assembly 1 and the housing assembly 4 for circumferentially clamping the pressure plate connecting cable 5. At least a portion of the outer surface of the FPC flexible board 3 is disposed on the through hole 6 between the upper shell assembly 1 and the housing assembly 4, and the inner surface of the FPC flexible board 3 is fully wrapped around the pressure plate connecting cable 5 passing through the through hole 6. The PCB board 2 is disposed inside the housing assembly 4, and at least a portion of the inner surface of the FPC flexible board 3 extends out pins 7 and connects to the PCB board 2 inside the housing assembly 4. The sensor is positioned between the upper shell assembly 1 and the housing assembly 4 for clamping the pressure plate. The cable 5 is clamped around its circumference through a via 6, which facilitates the clamping of the pressure plate connecting cable 5 around its circumference. The outer surface of the FPC flexible plate 3 is set on the via 6 between the upper shell assembly 1 and the shell assembly 4, and the inner surface of the FPC flexible plate 3 is wrapped around the pressure plate connecting cable 5 passing through the via 6. This arrangement allows the FPC flexible plate 3 to accurately determine the on / off state of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable 5. This does not affect the normal operation of the secondary protection circuit or the normal operation of the primary equipment. In use, it can transmit the voltage signal that the outlet pressure plate voltage monitoring sensor should have in the on / off state in real time and stably. It can detect the voltage values ​​at the upper and lower ends of the outlet pressure plate voltage monitoring sensor without manual operation, which is safe and efficient.

[0051] like Figure 6-8As shown, the upper shell assembly 1 includes an upper cover plate 8, an upper shell body 9, an upper clamping block 10, a first compression spring 11, a countersunk screw 12, and a hook 13 disposed on the upper shell body 9. The upper cover plate 8 is detachably disposed on the upper shell body 9 via the countersunk screw 12. The upper shell body 9 is provided with a connecting port 14, and the upper clamping block 10 is retractably disposed on the connecting port 14. One end of the first compression spring 11 is disposed on the upper clamping block 10, and the other end is pressed against the upper cover plate 8. Since the upper clamping block 10 is retractably disposed in the connecting port 14 of the upper shell body 9 via the first compression spring 11, it can clamp the pressure plate connecting cable 5 with a wire diameter range between φ2.0 and φ4.0. This wire diameter range almost covers all outlet pressure plates of the power grid. The plate is securely clamped and can withstand the operating force within the allowable range of engineering construction. It will not slip or detach from the pressure plate connecting cable 5 during clamping. In use, the FPC flexible plate 3 judges the engagement / disengagement status of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable 5, thereby improving the detection accuracy and preventing misjudgment due to the loose connection of the outlet pressure plate. The upper cover plate 8 and the upper clamping block 10 are provided with protrusions 15 or grooves 16 for fixing the first compression spring 11. The protrusions 15 and grooves 16 can better fix the first compression spring 11 and prevent the first compression spring 11 from shifting during use.

[0052] like Figure 9-14As shown, the housing assembly 4 includes a housing 17, a base plate 18, an elastic plunger 19, a lower clamping block 20, a second compression spring 21, a support rib 22, and a sliding buckle 23. The base plate 18 is detachably mounted on the housing 17. The housing 17 has a receiving groove 24 and a connecting hole 25. The second compression spring 21 is disposed in the receiving groove 24. The sliding buckle 23 passes through the connecting hole 25 and presses against the second compression spring 21. When the upper housing assembly 1 is fastened to the housing assembly 4, the hook 13 of the upper housing assembly 1 is fastened to the sliding buckle 23 of the housing assembly 4. The PCB board 2 is mounted inside the housing 17 via the support rib 22, and the lower clamping block 20 is mounted inside the housing 17. One end of the elastic plunger 19 is mounted on the base plate 18, and the other end is pressed against the bottom of the sliding buckle 23. The lower clamping block 20, through its arrangement, can cooperate with the upper clamping block 10 to clamp the pressure plate connecting cable 5, making it clamp more securely. The sliding buckle 23 can be engaged with the hook 13 on the upper shell body 9, thereby ensuring that the upper shell assembly 1 can be better secured on the shell 17 of the shell assembly 4. The elastic plunger 19 provides support for the sliding buckle 23. In this utility model, a guide groove 26 is provided at the bottom of the sliding buckle 23. One end of the elastic plunger 19 is set on the bottom plate 18, and the other end is pressed against the guide groove 26 at the bottom of the sliding buckle 23. The guide groove 26 provides a guiding function, so that even if the sliding buckle 23 moves inside the shell 17 under pressure, the bottom of the sliding buckle 23 will be tightly connected to the elastic plunger 19.

[0053] In this invention, a through hole 27 for the hook 13 to pass through is provided on the lower clamping block 20. By providing the through hole 27 for the hook 13 to pass through on the lower clamping block 20, the hook 13 can be more easily fixed on the sliding buckle 23. In addition, a conductive paint layer 28 is sprayed on the inner surface of the housing 17 and the base plate 18. The conductive paint layer 28 can effectively shield the interference of external electromagnetic fields on the voltage signal sensed by the outlet pressure plate voltage monitoring sensor, and finally achieve a stable output of the monitored voltage signal. In this invention, an insulating layer 29 is provided on the outer surface of the FPC flexible board 3, and a copper foil 30 is attached to the inner surface of the FPC flexible board 3. The copper foil extends to the pins 7 of the FPC flexible board 3, and the pins 7 of the FPC flexible board 3 are connected to the PCB board 2 to form an electrical circuit. Since the inner surface of the FPC flexible board 3 is provided with copper foil 30, the FPC flexible board 3 can be more stably connected to the PCB board 2. The upper cover plate 8, the upper shell body 9, the upper clamping block 10, the shell 17, the bottom plate 18, the supporting ribs 22 and the sliding buckle 23 are all made of plastic material. In practical applications, the upper cover plate 8, the upper shell body 9, the upper clamping block 10, the shell 17, the bottom plate 18, the supporting ribs 22 and the sliding buckle 23 can also be made of other insulating materials, which are all things that those skilled in the art can easily think of.

[0054] like Figure 15-16 As shown, this utility model also discloses a voltage monitoring system using an outlet pressure plate voltage monitoring sensor, including a pressure plate 31, a signal transmission line 32, a signal concentrator 33, a signal aggregation line 34, and a signal host 35; the pressure plate 31 is connected to the outlet pressure plate voltage monitoring sensor via a pressure plate connecting cable 5; the PCB boards 2 of multiple outlet pressure plate voltage monitoring sensors are connected to the signal concentrator 33 via the signal transmission line 32, and the signal concentrator 33 is connected to the signal host 35 via the signal aggregation line 34. By setting the signal concentrator 33, multiple outlet pressure plate voltage monitoring sensors can be detected simultaneously, which is simple and convenient.

[0055] Example

[0056] In this embodiment, the upper shell assembly is rotatably mounted on the housing assembly via a pivot. A communication port is provided on the upper shell body, and an upper clamping block is retractably mounted on the communication port. One end of a first compression spring is mounted on the upper clamping block, and the other end is pressed against the upper cover plate. Because the upper clamping block is retractably mounted in the communication port of the upper shell body via the first compression spring, it can clamp pressure plate connecting cables with wire diameters ranging from φ2.0 to φ4.0. This wire diameter range almost covers all applications of power grid outlet pressure plates, and the clamping is firm, able to withstand the operating force within the allowable range of engineering construction, preventing slippage and detachment of the pressure plate connecting cable during clamping. In use, the FPC flexible plate determines the engagement / disengagement status of the outlet pressure plate by sensing the electric field voltage generated by the pressure plate connecting cable, thus improving detection accuracy and preventing misjudgments due to a loose connection of the outlet pressure plate.

[0057] Furthermore, in this embodiment, a receiving groove and a connecting hole are respectively provided inside the housing. The second compression spring is disposed in the receiving groove. After the sliding buckle passes through the connecting hole, it is pressed against the second compression spring. When the upper shell assembly is fastened to the housing assembly, the hook of the upper shell assembly is fastened to the sliding buckle of the housing assembly. The PCB board is disposed inside the housing through the supporting ribs. The lower clamping block is disposed inside the housing. One end of the elastic plunger is disposed on the bottom plate, and the other end is pressed against the bottom of the sliding buckle. The lower clamping block can cooperate with the upper clamping block to clamp the pressure plate connecting cable, making it clamped more firmly. The sliding buckle can be fastened to the hook on the upper shell body, thereby ensuring that the upper shell assembly can be better fastened to the housing of the housing assembly. The elastic plunger provides support for the sliding buckle.

[0058] When the outlet pressure plate is in the engaged state, the outlet pressure plate and its connecting lines are in the connected state. A corresponding electric field will be generated around the pressure plate connecting cable. The outlet pressure plate voltage monitoring sensor clamped on the pressure plate connecting cable will sense a voltage signal representing a certain voltage value in the electric field generated by the pressure plate connecting cable, thereby determining that the outlet pressure plate is in the engaged state.

[0059] When the outlet pressure plate is in the disengaged state, the outlet pressure plate and its connecting lines are disconnected. No corresponding electric field is generated around the pressure plate connecting cable, so the outlet pressure plate voltage monitoring sensor clamped on the outlet pressure plate cable will not sense a voltage signal, thus determining that the outlet pressure plate is in the disengaged state.

[0060] In addition, multiple pressure plate voltage monitoring sensors can be used in conjunction with signal concentrators and signal hosts. Therefore, when in use, only one signal concentrator is needed to collect the detection data of multiple pressure plate voltage monitoring sensors, and then transmit the collected information to the signal host for summary processing of the detected data.

[0061] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of this utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An outlet pressure plate voltage monitoring sensor, characterized in that: Includes the upper shell assembly, PCB board, FPC flexible board, and housing assembly; The upper shell assembly is rotatably connected to the housing assembly. When the upper shell assembly and the housing assembly are closed, a through hole is provided between the upper shell assembly and the housing assembly for circumferentially clamping the pressure plate connecting cable. At least a portion of the outer surface of the FPC flexible plate is provided on the through hole between the upper shell assembly and the shell assembly, and the inner surface of the FPC flexible plate is fully wrapped around the pressure plate connecting cable passing through the through hole. The PCB board is disposed inside the housing assembly, and at least a portion of the inner surface of the FPC flexible board has protruding pins that are connected to the PCB board inside the housing assembly.

2. The outlet pressure plate voltage monitoring sensor according to claim 1, characterized in that: The upper shell assembly includes an upper cover plate, an upper shell body, an upper clamping block, a first compression spring, a countersunk screw, and a hook provided on the upper shell body; The upper cover plate is detachably mounted on the upper shell body by countersunk screws; The upper shell body is provided with a communication port, and the upper clamping block is retractably mounted on the communication port; One end of the first compression spring is mounted on the upper pressing block, and the other end is pressed against the upper cover plate.

3. The outlet pressure plate voltage monitoring sensor according to claim 2, characterized in that: Both the upper cover plate and the upper clamping block are provided with protrusions or grooves for fixing the first compression spring.

4. The outlet pressure plate voltage monitoring sensor according to claim 2, characterized in that: The housing assembly includes a housing, a base plate, an elastic plunger, a lower clamping block, a second compression spring, supporting ribs, and a sliding buckle; The base plate is detachably mounted on the housing; The housing is provided with a receiving groove and a connecting hole. The second compression spring is disposed in the receiving groove. The sliding buckle passes through the connecting hole and presses against the second compression spring. When the upper shell assembly is fastened to the housing assembly, the hook of the upper shell assembly is fastened to the sliding buckle of the housing assembly. The PCB board is mounted inside the housing by supporting ribs, and the lower clamping block is mounted inside the housing. One end of the elastic plunger is mounted on the base plate, and the other end is pressed against the bottom of the sliding buckle.

5. The outlet pressure plate voltage monitoring sensor according to claim 4, characterized in that: The bottom of the sliding buckle is provided with a guide groove, and one end of the elastic plunger is set on the base plate, while the other end is pressed against the guide groove at the bottom of the sliding buckle.

6. The outlet pressure plate voltage monitoring sensor according to claim 4, characterized in that: The lower clamping block is provided with a through hole for the hook to pass through.

7. The outlet pressure plate voltage monitoring sensor according to claim 4, characterized in that: The inner surfaces of both the housing and the base plate are coated with a conductive paint layer.

8. The outlet pressure plate voltage monitoring sensor according to claim 1, characterized in that: The outer surface of the FPC flexible board is provided with an insulating layer, and the inner surface of the FPC flexible board is attached with copper foil. The copper foil extends to the pins of the FPC flexible board, and the pins of the FPC flexible board are connected to the PCB board to form an electrical circuit.

9. The outlet pressure plate voltage monitoring sensor according to claim 4, characterized in that: The upper cover, upper shell body, upper clamping block, shell, bottom plate, supporting ribs and sliding buckle are all made of plastic material.

10. A voltage monitoring system using the outlet pressure plate voltage monitoring sensor according to any one of claims 1-9, comprising a pressure plate, a signal transmission line, a signal concentrator, a signal aggregation line, and a signal host, characterized in that: The pressure plate is connected to the outlet pressure plate voltage monitoring sensor via a pressure plate connecting cable; The PCB boards of multiple outlet pressure plate voltage monitoring sensors are connected to a signal concentrator via signal transmission lines, and the signal concentrator is connected to a signal host via a signal aggregation line.

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