Multi-principle switch cabinet comprehensive monitoring sensor with on-site display and diagnosis

Abstract

The invention belongs to the technical field of monitoring sensors, particularly relates to a multi-principle switch cabinet comprehensive monitoring sensor with on-site display and diagnosis, and aims to solve the problem that the suction capacity of a suction cup is poor due to the complex internal environment of a switch cabinet in an existing device. Comprising a fixing plate, a sensor body, a sensor probe, an on-site display screen and a mounting groove, the beneficial effects of the invention are that the wedge-shaped insertion block and the insertion hole are matched to form a reliable mechanical locking structure after insertion, and the first spring continuously applies thrust to the wedge-shaped insertion block, so that the insertion block tightly abuts against the inner wall of the insertion hole, thereby effectively preventing the sensor from loosening or displacement caused by equipment vibration, slight collision or other external force factors, and improving the reliability of the sensor. And compared with a suction cup, fixation is firmer, it can be ensured that the sensor body still keeps stable in a long-term vibration environment, and accuracy and continuity of monitoring data are ensured.

Description

Technical Field

[0001] The invention relates to a monitoring sensor, in particular to a multi-principle switch cabinet comprehensive monitoring sensor with local display and diagnosis, belonging to the technical field of monitoring sensors. Background Art

[0002] In the power system, switchgear plays a key role in distributing and controlling electric energy. The safe and stable operation of switchgear is crucial to the reliability of the entire power network. Therefore, it is necessary to accurately monitor the various parameters in the switchgear. The existing switchgear comprehensive monitoring sensors use a variety of single-principle sensors to monitor temperature, humidity, partial discharge, electrical parameters, etc. These sensors are generally integrated and distributed on the surface of the sensor body, can work independently, and can feed back the detected and diagnosed data to the display screen, so as to facilitate users to collect data.

[0003] In the prior art, a wireless temperature sensor disclosed in announcement number CN220708557U uses a suction cup assembly and a snap button to drive a toggle rod to push the suction cup upward for adsorption or squeeze it downward to release adsorption, thereby achieving the effect of stable adsorption and easy loading and unloading. Through the angle adjustment mechanism, the angle between the rotating head and the rotating arm, and the rotating arm and the fixed arm is adjusted by a connecting piece to achieve the purpose of angle adjustment. The above-mentioned prior art solutions have the following shortcomings: due to the complex internal environment of the switch cabinet, there are problems such as humidity changes and dust accumulation. When the humidity is high, a water film is easily formed on the surface of the suction cup, which greatly reduces the friction between the suction cup and the surface of the switch cabinet, making the suction cup very easy to fall off from the inner wall of the switch cabinet. In addition, during long-term operation, dust is continuously adsorbed on the edge and adsorption surface of the suction cup, which will destroy the sealing performance of the suction cup, resulting in air pressure leakage, thereby causing the suction cup to lose its adsorption force. Furthermore, the switch cabinet will produce slight vibrations during operation. This continuous vibration will gradually weaken the adsorption stability of the suction cup, causing the sensor position to shift or even fall. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-principle switch cabinet comprehensive monitoring sensor with on-site display and diagnosis in order to solve the problem that the suction cup has poor adsorption capacity due to the complex internal environment of the switch cabinet.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: a multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis, comprising a fixing plate, a sensor body, a sensor probe, a local display screen and a mounting groove, characterized in that: the fixing plate is fixedly connected to a reserved mounting position inside the switch cabinet by screws, a mounting groove is provided on the surface of the fixing plate, the sensor body is clamped in the mounting groove, and the contour of the mounting groove is matched with the external contour of the sensor body, a plurality of sensor probes are fixedly connected to the surface of the sensor body at equal distances, the local display screen is fixedly connected to the surface of the sensor body, and the mounting position of the local display screen is located above the sensor probe; Rectangular holes are symmetrically provided on both sides of the shell of the sensor body, a wedge-shaped plug is inserted into each rectangular hole, the wedge-shaped plug is slidably connected to the sensor body, a first spring is provided inside each rectangular hole, one end of the first spring is fixedly connected to the wedge-shaped plug, and the other end of the first spring is fixedly connected to the sensor body, and sockets adapted to the wedge-shaped plug are symmetrically provided on both sides of the mounting groove on the surface of the fixing plate, and the sockets are connected to the mounting groove.

[0006] As a further solution of the present invention: a first slide groove is opened on the upper and lower sides of each rectangular hole, the first slide groove is connected to the rectangular hole, and a first slider is slidably connected to the interior of each first slide groove, and the first slider is symmetrically fixedly connected to the surface of the wedge-shaped plug.

[0007] As a further solution of the present invention: a joystick is fixedly connected between the upper and lower wedge-shaped blocks located on the same side, the joystick is composed of a cross bar and a fixed column, the fixed column is symmetrically fixedly connected to the two sides of the cross bar, and the two fixed columns are respectively fixedly connected to the two wedge-shaped blocks, and a shift block is fixedly connected to the cross bar surface of the joystick, and the installation position of the shift block is located at the center of the cross bar.

[0008] As a further solution of the present invention: the surface of the sensor body is symmetrically provided with receiving grooves, and the shapes of the receiving grooves and the joystick are matched.

[0009] As a further solution of the present invention: strip-shaped through grooves are symmetrically provided on both sides of the surface of the fixing plate, the strip-shaped through grooves are connected to the insertion holes, and the sizes of the strip-shaped through grooves and the fixing columns of the joystick are adapted to each other.

[0010] As a further solution of the present invention: strip-shaped slide grooves are provided on both side surfaces of the sensor body, rectangular sliders are slidably connected to the inside of the two strip-shaped slide grooves, a U-shaped plate is slidably sleeved on the surface of the sensor body, two rectangular sliders are symmetrically fixedly connected to the inner surface of the U-shaped plate, the inner surface of the U-shaped plate is fixedly connected to a brush plate by fastening bolts, a soft brush is fixedly connected to the surface of the brush plate, and the fastening bolts are installed at the four corners of the brush plate.

[0011] As a further solution of the present invention: a second spring is disposed inside each of the two strip-shaped slide grooves, one end of the second spring is fixedly connected to the rectangular slider, and the other end of the second spring is fixedly connected to the sensor body.

[0012] As a further solution of the present invention: a protruding block is fixedly connected to the surface of the U-shaped plate, and the installation position of the protruding block is located at the center position of the U-shaped plate.

[0013] The beneficial effects of the present invention are: The present invention uses a rectangular hole, a wedge-shaped plug, a first spring, a first slider, a plug hole, and a mounting groove to cooperate with each other. First, the sensor body and the fixing plate are connected by inserting the wedge-shaped plug into the plug hole of the fixing plate. The operation is simple and direct, and no complicated thread fastening or other cumbersome connection procedures are required, which can effectively save installation time and labor costs. Secondly, the wedge-shaped plug and the socket can form a reliable mechanical locking structure after insertion. The first spring continuously applies thrust to the wedge-shaped plug, so that the plug is tightly against the inner wall of the socket, effectively preventing the sensor from loosening or moving due to equipment vibration, slight collision or other external factors. Compared with the suction cup fixation, it is more firmly fixed, which can ensure that the sensor body remains stable in a long-term vibration environment, ensuring the accuracy and continuity of the monitoring data; Furthermore, when the sensor body needs to be disassembled for maintenance or replacement, the sensor body can be easily removed by simply overcoming the elastic force of the first spring and pulling the wedge-shaped plug out of the socket. The operation is simple and will not cause damage to the sensor body and the fixing plate, which is conducive to reducing maintenance costs and extending the service life of the equipment. At the same time, the symmetrical arrangement of the rectangular hole and the wedge-shaped plug makes the force uniform, further enhancing the reliability and stability of the overall structure, and reducing the risk of component wear or connection failure caused by uneven local force; The present invention uses a strip-shaped slide groove, a rectangular slider, a U-shaped plate, a brush plate, a soft brush and other structures in coordination. Firstly, from the perspective of maintaining the display screen function, dust accumulated on the surface of the local display screen will affect the display effect. The soft brush can promptly and effectively remove the dust to ensure the clarity of the local display screen. In this way, when the operation and maintenance personnel view the monitoring data on site, they can clearly and accurately read the information on the display screen without misjudgment due to dust obstruction, thereby ensuring the timeliness and accuracy of the switch cabinet status monitoring.

[0014] Secondly, from the perspective of equipment service life, dust may carry static electricity or some corrosive tiny particles. If it adheres to the surface of the local display screen for a long time, it may corrode the surface material of the local display screen, or even enter the inside of the local display screen and damage the electronic components. Regularly cleaning dust with a soft brush can reduce these damaging factors, extend the service life of the local display screen, and reduce the maintenance and replacement costs of the equipment.

[0015] In addition, the structural design of the slidingly connected U-shaped plate and soft brush is very convenient. When dust needs to be cleaned, you only need to move the U-shaped plate and use the soft brush to comprehensively clean the on-site display screen. The cooperation of the rectangular slider and the strip slide groove can ensure that the U-shaped plate moves smoothly, so that the soft brush can evenly clean the dust at various positions of the display screen. The method of fastening the brush plate with bolts is not only firmly installed, but also convenient for replacement of the brush plate. When the soft brush is worn, it can be easily disassembled and replaced with a new brush plate to ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the disassembled structure of the sensor body and the fixing plate of the present invention; Figure 3 It is a structural schematic diagram of the fixing plate of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the sensor body in the present invention; Figure 5 for Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the connection structure of the joystick, the shift block and the wedge-shaped insert block in the present invention; Figure 7 It is a schematic diagram of the connection structure of the U-shaped plate, the soft brush and the sensor body in the present invention; Figure 8 for Figure 7 The enlarged structural diagram at B in the middle; Fig. 9 It is a schematic diagram of the split structure of the brush plate and the U-shaped plate in the present invention; Fig.10 It is a structural schematic diagram of the sensor body in the present invention; In the figure: 1. fixing plate; 2. sensor body; 3. sensor probe; 4. local display screen; 5. mounting slot; 6. jack; 7. strip through slot; 8. rectangular hole; 9. first slide slot; 10. first slider; 11. wedge-shaped plug; 12. first spring; 13. joystick; 14. shift block; 15. strip slide slot; 16. second spring; 17. rectangular slider; 18. U-shaped plate; 19. fastening bolt; 20. brush plate; 21. soft brush; 22. raised block; 23. receiving slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0018] like Figures 1 to 10 As shown, a multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis includes a fixing plate 1, a sensor body 2, a sensor probe 3, a local display screen 4 and a mounting slot 5. The fixing plate 1 is fixedly connected to a reserved mounting position inside the switch cabinet by screws. The surface of the fixing plate 1 is provided with a mounting slot 5. The sensor body 2 is clamped in the mounting slot 5, and the contour of the mounting slot 5 is adapted to the outer contour of the sensor body 2. A plurality of sensor probes 3 are fixedly connected to the surface of the sensor body 2 at equal intervals. The local display screen 4 is fixedly connected to the surface of the sensor body 2. The installation position of the local display screen 4 is located above the sensor probe 3. Through the plurality of sensor probes 3, various data in the switch cabinet, such as temperature, humidity, power monitoring, etc., can be monitored, and the monitoring data can be displayed on the local display screen 4 or remotely transmitted to the control room, so as to facilitate maintenance personnel to analyze and observe the data. Rectangular holes 8 are symmetrically provided on both sides of the shell of the sensor body 2, and a wedge-shaped plug 11 is inserted inside each rectangular hole 8. The wedge-shaped plug 11 is slidably connected to the sensor body 2. A first spring 12 is provided inside each rectangular hole 8, and one end of the first spring 12 is fixedly connected to the wedge-shaped plug 11, and the other end of the first spring 12 is fixedly connected to the sensor body 2. The surface of the fixing plate 1 is symmetrically provided with plug holes 6 adapted to the wedge-shaped plug 11 on both sides of the mounting groove 5, and the plug holes 6 are connected to the mounting groove 5. When in use, the sensor body 2 is aligned with the mounting groove 5, and then the wedge-shaped plugs 11 on both sides are pressed to move the wedge-shaped plugs 11 toward the direction of the rectangular hole 8, and then the sensor body 2 is placed as a whole in the mounting groove 5. At this time, the wedge-shaped plug 11 is inserted into the plug hole 6 under the elastic force of the first spring 12, so that the sensor body 2 can be fixed on the surface of the fixing plate 1, which is convenient for installing the sensor body 2 and provides convenience for later maintenance and replacement. Example

[0019] Improvements based on Example 1: Furthermore, each rectangular hole 8 is provided with a first slide groove 9 on both sides of the upper and lower sides, the first slide groove 9 is connected to the rectangular hole 8, and each first slide groove 9 is slidably connected to the inside of the first slide groove 9. The first slide block 10 is symmetrically fixedly connected to the surface of the wedge-shaped plug 11. The first slide block 10 can limit the movement trajectory of the wedge-shaped plug 11 to prevent the wedge-shaped plug 11 from moving out of the rectangular hole 8.

[0020] A joystick 13 is fixedly connected between the upper and lower wedge-shaped blocks 11 on the same side. The joystick 13 is composed of a cross bar and a fixed column. The fixed column is symmetrically fixedly connected to the two sides of the cross bar, and the two fixed columns are fixedly connected to the two wedge-shaped blocks 11 respectively. A shift block 14 is fixedly connected to the cross bar surface of the joystick 13. The installation position of the shift block 14 is located at the center of the cross bar. During installation, the shift blocks 14 on both sides are shifted, thereby driving the joysticks 13 on both sides to approach each other, thereby facilitating the control of the wedge-shaped blocks 11 on both sides to move toward the rectangular hole 8, and then facilitating the installation of the sensor body 2 in the installation groove 5.

[0021] Furthermore, the surface of the sensor body 2 is symmetrically provided with receiving grooves 23, and the shapes of the receiving grooves 23 and the joystick 13 are adapted to each other. When the sensor body 2 needs to be taken out, the shift blocks 14 on both sides are controlled to approach each other, and then the joysticks 13 on both sides are made to approach each other until the shift blocks 14 are in contact with the sides of the sensor body 2. At this time, the joystick 13 is located in the receiving groove 23, and the wedge-shaped plug block 11 is just moved out of the socket 6, so that the sensor body 2 is conveniently taken out of the mounting groove 5.

[0022] Furthermore, strip-shaped through grooves 7 are symmetrically provided on both sides of the surface of the fixing plate 1, and the strip-shaped through grooves 7 are connected to the insertion hole 6. The sizes of the strip-shaped through grooves 7 and the fixing columns of the joystick 13 are matched. During the installation of the sensor body 2, when the wedge-shaped plug 11 is inserted into the insertion hole 6, the fixing column of the joystick 13 passes through the strip-shaped through grooves 7, ensuring that the sensor body 2 can be installed smoothly. Example

[0023] Improvements based on Example 1: Furthermore, strip-shaped slide grooves 15 are provided on both side surfaces of the sensor body 2, and rectangular sliders 17 are slidably connected inside the two strip-shaped slide grooves 15. A U-shaped plate 18 is slidably sleeved on the surface of the sensor body 2, and the two rectangular sliders 17 are symmetrically fixedly connected to the inner surface of the U-shaped plate 18. The inner surface of the U-shaped plate 18 is fixedly connected to a brush plate 20 by fastening bolts 19, and a soft brush 21 is fixedly connected to the surface of the brush plate 20. The fastening bolts 19 are installed at the four corners of the brush plate 20. The soft brush 21 can be used to clean the dust on the surface of the sensor body 2 to ensure the clarity of the on-site display screen 4.

[0024] Furthermore, a second spring 16 is disposed inside each of the two strip-shaped slide grooves 15 . One end of the second spring 16 is fixedly connected to the rectangular slider 17 , and the other end of the second spring 16 is fixedly connected to the sensor body 2 .

[0025] Furthermore, a protrusion block 22 is fixedly connected to the surface of the U-shaped plate 18, and the installation position of the protrusion block 22 is located at the center position of the U-shaped plate 18. Working principle: When in use, first, fix the fixing plate 1 to the reserved installation position 1 inside the switch cabinet by screws, and the installation groove 5 opened on its surface is adapted to the outer contour of the sensor body 2 to provide a placement space for the sensor body 2; During installation, the shifting block 14 located at the center of the crossbar of the operating lever 13 is shifted to drive the crossbar of the operating lever 13 to move. Since the fixing column is fixedly connected to the upper and lower wedge-shaped blocks 11 respectively, the wedge-shaped blocks 11 on both sides can overcome the elastic force of the first spring 12 and move toward the rectangular hole 8. At the same time, the first slider 10 slides in the first sliding groove 9 to limit the movement trajectory of the wedge-shaped block 11 and prevent it from moving out of the rectangular hole 8.

[0026] Then, ensure that the position of the joystick 13 remains unchanged, align the sensor body 2 with the installation slot 2 and put it in. When the sensor body 2 is completely placed in the installation slot 2, release the joystick 13. At this time, the wedge-shaped plug 11 is inserted into the plug hole 6 connected to the installation slot 5 on the surface of the fixing plate 1 under the elastic force of the first spring 12. At this time, the fixing column of the joystick 13 passes through the bar-shaped through slot 7, thereby firmly fixing the sensor body 2 on the surface of the fixing plate 1. The cooperation between the wedge-shaped plug 11 and the plug hole 6 can form a reliable mechanical locking structure after insertion. The first spring 12 continuously applies thrust to the wedge-shaped plug 11, so that the wedge-shaped plug 11 is tightly against the inner wall of the plug hole 6, effectively preventing the sensor body 2 from loosening or displacement due to equipment vibration, slight collision or other external force factors. Compared with the suction cup fixation, it is more firmly fixed, which can ensure that the sensor body 2 remains stable in a long-term vibration environment, and ensure the accuracy and continuity of the monitoring data; Then, multiple sensor probes 3 can be used to monitor various data such as temperature, humidity, and power in the switch cabinet. The data collected by the sensor probes 3 will be displayed on the local display screen 4, which is convenient for maintenance personnel to directly observe the data on the switch cabinet site; on the other hand, the data can be remotely transmitted to the control room for technical personnel to conduct more in-depth analysis and processing, so as to make a comprehensive assessment and timely response to the operating status of the switch cabinet; During use, when it is necessary to clean the dust on the surface of the local display screen 4, move the U-shaped plate 18. Since the rectangular slider 17 slides in the strip slide groove 15 and the second spring 16 connects the rectangular slider 17 and the sensor body 2, the U-shaped plate 18 can move smoothly, and the brush plate 20 fixed to the inner surface of the U-shaped plate 18 by the fastening bolts 19 moves accordingly, and the soft brush 21 on its surface contacts the surface of the local display screen 4 to clean the dust, thereby ensuring the clarity of the local display screen 4 and the clarity and readability of the monitoring data without affecting the judgment of the operation and maintenance personnel.

[0027] When the sensor body 2 needs to be taken out for inspection or replacement, the shift block 14 is operated again to bring the two side joysticks 13 closer to each other until the shift block 14 is in contact with the side of the sensor body 2. At this time, the joystick 13 is located in the receiving groove 23, and the wedge-shaped plug block 11 is just moved out of the socket 6, so that the sensor body 2 can be smoothly taken out of the installation groove 5, which is convenient for subsequent maintenance work.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis, comprising a fixing plate (1), a sensor body (2), a sensor probe (3), a local display screen (4) and a mounting slot (5), characterized in that: The fixing plate (1) is fixedly connected to a mounting position reserved inside the switch cabinet by means of screws, a mounting groove (5) is provided on the surface of the fixing plate (1), the sensor body (2) is clamped in the mounting groove (5), and the contour of the mounting groove (5) matches the outer contour of the sensor body (2), a plurality of the sensor probes (3) are fixedly connected to the surface of the sensor body (2) at equal distances, the local display screen (4) is fixedly connected to the surface of the sensor body (2), and the mounting position of the local display screen (4) is located above the sensor probes (3); Rectangular holes (8) are symmetrically provided on both sides of the shell of the sensor body (2), a wedge-shaped plug (11) is inserted into each of the rectangular holes (8), the wedge-shaped plug (11) and the sensor body (2) are slidably connected, a first spring (12) is provided inside each of the rectangular holes (8), one end of the first spring (12) is fixedly connected to the wedge-shaped plug (11), and the other end of the first spring (12) is fixedly connected to the sensor body (2), and plug holes (6) adapted to the wedge-shaped plug (11) are symmetrically provided on both sides of the mounting groove (5) on the surface of the fixing plate (1), and the plug holes (6) are connected to the mounting groove (5).

2. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 1 is characterized in that: Each rectangular hole (8) is provided with a first slide groove (9) on both upper and lower sides, the first slide groove (9) is connected to the rectangular hole (8), and each first slide groove (9) is slidably connected to a first slider (10) inside, and the first slider (10) is symmetrically fixedly connected to the surface of the wedge-shaped plug (11).

3. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 2 is characterized in that: A joystick (13) is fixedly connected between the upper and lower wedge-shaped inserts (11) located on the same side. The joystick (13) is composed of a crossbar and a fixed column. The fixed column is symmetrically fixedly connected to the two sides of the crossbar, and the two fixed columns are respectively fixedly connected to the two wedge-shaped inserts (11). A shift block (14) is fixedly connected to the crossbar surface of the joystick (13). The mounting position of the shift block (14) is located at the center of the crossbar.

4. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 3 is characterized in that: The surface of the sensor body (2) is symmetrically provided with accommodation grooves (23), and the shapes of the accommodation grooves (23) and the operating rod (13) are adapted to each other.

5. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 4 is characterized in that: The surface of the fixing plate (1) is symmetrically provided with strip-shaped through grooves (7), the strip-shaped through grooves (7) are connected to the insertion hole (6), and the sizes of the strip-shaped through grooves (7) and the fixing column of the operating rod (13) are matched.

6. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 4 is characterized in that: The sensor body (2) is provided with strip-shaped slide grooves (15) on both side surfaces, and rectangular sliders (17) are slidably connected inside the two strip-shaped slide grooves (15). A U-shaped plate (18) is slidably sleeved on the surface of the sensor body (2), and the two rectangular sliders (17) are symmetrically fixedly connected to the inner surface of the U-shaped plate (18). The inner surface of the U-shaped plate (18) is fixedly connected to a brush plate (20) via fastening bolts (19), and a soft brush (21) is fixedly connected to the surface of the brush plate (20). The fastening bolts (19) are installed at the four corners of the brush plate (20).

7. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 6 is characterized by: A second spring (16) is disposed inside each of the two strip-shaped slide grooves (15); one end of the second spring (16) is fixedly connected to the rectangular slide block (17); and the other end of the second spring (16) is fixedly connected to the sensor body (2).

8. The multi-principle switch cabinet integrated monitoring sensor with local display and diagnosis according to claim 7 is characterized in that: A protruding block (22) is fixedly connected to the surface of the U-shaped plate (18), and the installation position of the protruding block (22) is located at the center position of the U-shaped plate (18).

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