Anti-theft electric energy metering box

Abstract

An anti-theft electric energy metering box disclosed by the present invention comprises a box body, a box door is hinged and installed on the box body through an anti-theft hinge, the anti-theft hinge comprises a fixed sheet, a rotating shaft is rotatably installed on the fixed sheet, the upper side and the lower side of the rotating shaft are fixed on a movable sheet, and a fixed capacitive angular displacement sensor is arranged in the fixed sheet. The rotating shaft penetrates through the detection end of the capacitive angular displacement sensor; the anti-theft box further comprises an anti-theft mechanism which is arranged between the box body and the box door. The capacitive angular displacement sensor is integrated through the anti-theft hinge, opening angle data of the box door can be captured in real time, a certain threshold value is set in combination with the control module, normal operation and illegal invasion can be accurately distinguished, and compared with a traditional single displacement sensor and a capacitive non-contact measurement mode, mechanical abrasion is avoided, the angular resolution is higher, and the measurement accuracy is high. Illegal behaviors such as door prying can be recognized at the first time, false alarm caused by environment vibration can be avoided, and accurate data support is provided for anti-theft monitoring.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, and in particular to an anti-theft electricity metering box. Background Technology

[0002] In the existing technology, electricity metering boxes, as key equipment in the power system, widely adopt metal box structures and use mechanical locks to control opening and closing. Some products are equipped with ordinary hinges to connect the box body and the door, and anti-counterfeiting measures such as lead seals are used to prevent electricity theft. To improve security, some metering boxes integrate electronic locks and simple displacement sensors. When the door is abnormally opened, a local audible and visual alarm is triggered. At the same time, heat dissipation holes and wiring holes are usually set on the side of the box to meet the equipment operation requirements.

[0003] However, existing technologies have obvious drawbacks: traditional mechanical locks are easily pried open, ordinary hinges lack angle monitoring functions, making it difficult to distinguish between normal operation and illegal intrusion; electronic locks mostly rely on a single sensor, resulting in a high false alarm rate and a lack of physical locking linkage; alarm signals are mostly triggered locally and cannot be transmitted to the monitoring center in real time, leading to delays in handling abnormal situations; in addition, heat dissipation structures and anti-theft designs often conflict, affecting the overall protection effect. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-theft electricity metering box.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An anti-theft electricity metering box includes a box body with a door hinged to it. The anti-theft hinge includes a fixed plate with a rotating shaft rotatably mounted on it. The rotating shaft is fixed to a movable plate on both sides. A capacitive angular displacement sensor is fixed inside the fixed plate, and the rotating shaft passes through the detection end of the capacitive angular displacement sensor. The box body also includes an anti-theft mechanism located between the box body and the door. The anti-theft mechanism includes a slide rail horizontally fixed to the inner wall of the box body. A slider is horizontally slidably mounted on the slide rail. A first connecting rod is rotatably connected to the slider. The end of the first connecting rod is rotatably connected to a second connecting rod. The end of the second connecting rod is rotatably connected to a fixed block, which is fixed to the inner wall of the door. The anti-theft mechanism also includes an electric push rod fixed to the inner wall of the box body. The extension direction of the extension end of the electric push rod is vertical and perpendicular to the sliding direction of the slider. A limit pin is fixed to the extension end of the electric push rod. The limit pin movably passes through the side wall of the slide rail and restricts the slider from moving towards the door.

[0006] Preferably, the anti-theft mechanism further includes a guide cylinder, which is fixed to the inner wall of the box, and the electric push rod is movably sleeved inside the limit pin.

[0007] Preferably, one side of the enclosure is provided with heat dissipation holes for heat dissipation and wiring holes for wiring.

[0008] Preferably, the inner wall of the anti-theft hinge is provided with a control module, which is electrically connected to a capacitive angular displacement sensor and an electric push rod.

[0009] Preferably, the control module includes an MCU control unit and a wireless signal transmission unit; the wireless signal transmission unit is used to send angle anomaly data to the control room, to receive alarm cancellation data sent by the control room, and to send angle anomaly data sent by the MCU control unit; the MCU control unit is used to control the electric push rod action and to receive angle data transmitted by the capacitive angular displacement sensor and convert it into angle anomaly data and normal angle data according to the magnitude of the angle data.

[0010] Preferably, when the door is normally closed, the angle data of the capacitive angular displacement sensor is 0°; when the angle data transmitted by the capacitive angular displacement sensor is greater than or equal to 10°, the angle data is converted into abnormal angle data; when the angle data transmitted by the capacitive angular displacement sensor is between 0° and 10°, the angle data is converted into normal angle data.

[0011] Preferably, a fixing frame is fixed inside the enclosure, and the fixing frame is equipped with a terminal block assembly, a power detection assembly, and a current transformer assembly.

[0012] Preferably, the fixing plate includes a first metal plate, the first metal plate having a first mounting hole and rotating holes from top to bottom that match the rotating shaft.

[0013] Preferably, the movable piece includes a second metal piece, the second metal piece is provided with a second mounting hole, and the upper and lower ends of the edge of the second metal piece are provided with fixing parts that are rotatably connected to the rotating shaft.

[0014] Preferably, the rotating shaft includes a lower rotating shaft and an upper rotating shaft, with a journal provided between the lower rotating shaft and the upper rotating shaft. The journal is located inside the detection end of the capacitive angular displacement sensor, and a connecting part is provided at the end of both the lower rotating shaft and the upper rotating shaft.

[0015] The present invention has the following beneficial effects: 1. This invention integrates a capacitive angular displacement sensor into the anti-theft hinge, which can capture the door opening angle data in real time. Combined with the control module to set a certain threshold, it can accurately distinguish between normal operation and illegal intrusion. Compared with traditional single displacement sensors, the capacitive non-contact measurement method has no mechanical wear and higher angular resolution. It can identify illegal acts such as prying the door in the first time, and avoid false alarms caused by environmental vibration, providing accurate data support for anti-theft monitoring.

[0016] 2. The anti-theft mechanism of this invention adopts a linkage structure of slide rail, slider and connecting rod, and cooperates with electric push rod limit pin to build a dual protection of mechanical linkage and electronic locking. When an abnormal angle is detected, the electric push rod quickly drives the limit pin through the slide rail, restricting the slider from moving towards the box door, thus physically locking the box door. At the same time, the stable connection between the anti-theft hinge and the box body and box door, as well as the stable support of the guide tube for the electric push rod, greatly improves the anti-pry capability, solves the problems of traditional mechanical locks being easily damaged and having only one protection, and ensures the safety of the equipment inside the metering box.

[0017] 3. The control module of this invention integrates an MCU control unit and a wireless signal transmission unit, which can send angle anomaly data to the control room in real time and receive alarm cancellation commands from the control room. This breaks the limitations of traditional local alarms, allowing staff to remotely monitor the status of the metering box without on-site inspection, and enabling more timely handling of abnormal situations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the anti-theft electricity metering box. Figure 2 Exploded view of the anti-theft hinge; Figure 3 This is one of the schematic diagrams of the internal structure of an anti-theft electricity metering box; Figure 4 This is the second schematic diagram of the internal structure of the anti-theft electricity metering box; Figure 5 This is a schematic diagram of the anti-theft mechanism and the connection structure between the cabinet and the door; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point A in the middle.

[0019] In the diagram: 1. Housing; 101. Heat dissipation hole; 102. Wiring hole; 2. Anti-theft hinge; 201. Fixing piece; 201a. First metal piece; 201b. First mounting hole; 201c. Rotating hole; 202. Movable piece; 202a. Second metal piece; 202b. Second mounting hole; 202c. Fixing part; 203. Capacitive angular displacement sensor; 204. Rotating shaft; 204a. Lower rotating shaft; 204b. 1. Journal; 204c. Upper rotating shaft; 204d. Rotating connecting part; 3. Box door; 301. Control module; 4. Anti-theft mechanism; 401. Slide rail; 402. Slider; 403. First connecting rod; 404. Second connecting rod; 405. Fixing block; 406. Electric push rod; 407. Limit pin; 408. Guide cylinder; 5. Fixing frame; 6. Terminal block assembly; 7. Power detection assembly; 8. Current transformer assembly. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figure 1-6 An anti-theft electricity metering box includes a box body 1, with a door 3 hinged to the box body 1 via an anti-theft hinge 2. The anti-theft hinge 2 includes a fixing plate 201, on which a rotating shaft 204 is rotatably mounted. The rotating shaft 204 is fixed on movable plates 202 on its upper and lower sides. A fixed capacitive angular displacement sensor 203 is disposed inside the fixing plate 201, and the rotating shaft 204 passes through the detection end of the capacitive angular displacement sensor 203. The box also includes an anti-theft mechanism 4, which is disposed between the box body 1 and the door 3. The anti-theft mechanism 4 includes a slide rail 401, which is horizontally fixed to the inner wall of the box body 1, and a slider 4 is horizontally slidably mounted on the slide rail 401. 02. A first connecting rod 403 is rotatably connected to the slider 402. The end of the first connecting rod 403 is rotatably connected to a second connecting rod 404. The end of the second connecting rod 404 is rotatably connected to a fixing block 405. The fixing block 405 is fixed to the inner wall of the door 3. The anti-theft mechanism 4 also includes an electric push rod 406. The electric push rod 406 is fixed to the inner wall of the box 1. The extension direction of the extension end of the electric push rod 406 is vertically set and perpendicular to the sliding direction of the slider 402. A limit pin 407 is fixed to the extension end of the electric push rod 406. The limit pin 407 moves through the side wall of the slide rail 401 and restricts the slider 402 from moving toward the door 3.

[0022] In this embodiment, the housing 1 provides the mounting base for each component. The fixing piece 201 of the anti-theft hinge 2 is used to install the rotating shaft 204 and fix the capacitive angular displacement sensor 203. The movable piece 202 realizes the hinge between the door 3 and the housing 1 through the rotating shaft 204. The capacitive angular displacement sensor 203 can detect the rotation angle of the rotating shaft 204 to monitor the status of the door 3. The slide rail 401 of the anti-theft mechanism 4 allows the slider 402 to slide horizontally. The slider 402, the first connecting rod 403, the second connecting rod 404 and the fixing block 405 cooperate to realize the linkage when the door 3 is opened and closed. The electric push rod 406 drives the limit pin 407 to pass through the slide rail 401, which can limit the slider 402 to move towards the door 3, thus jointly realizing the anti-theft function.

[0023] In this invention, the anti-theft mechanism 4 also includes a guide cylinder 408, which is fixed to the inner wall of the box 1, and the electric push rod 406 is movably sleeved inside the limiting pin 407.

[0024] In this embodiment, the slide rail 401 provides a horizontal sliding track for the slider 402. The slider 402, the first connecting rod 403, the second connecting rod 404, and the fixing block 405 cooperate to realize the opening and closing linkage of the box door 3. The electric push rod 406 drives the limit pin 407 to extend and retract vertically. The limit pin 407 passes through the side wall of the slide rail 401 and can restrict the slider 402 from moving towards the box door 3. The guide cylinder 408 is fixed to the inner wall of the box body 1 and movably sleeved with the electric push rod 406, which can stabilize the extension and retraction direction of the electric push rod 406. All structures work together to build reliable protection, improve the anti-interference and anti-pry capabilities of the anti-theft mechanism 4, and ensure the safety of the metering box.

[0025] In this invention, a heat dissipation hole 101 for heat dissipation and a wiring hole 102 for wiring are provided on one side of the housing 1.

[0026] In this embodiment, the housing 1 serves as the core load-bearing structure, providing an installation base for internal components such as the fixing frame 5 and terminal block assembly 6, as well as external anti-theft hinges 2 and the housing door 3, ensuring the stability of the overall structure. The heat dissipation hole 101 on one side of the housing 1 can promptly dissipate the heat generated by the internal equipment, preventing high temperatures from affecting the metering accuracy and service life of precision components such as the power detection component 7. Similarly, the wiring hole 102 located on one side of the housing 1 can standardize the cable arrangement and prevent messy cable tangling from causing circuit failures. Together with the housing 1, both of these measures take into account equipment heat dissipation and wiring safety, improving the operational reliability of the metering box.

[0027] In this invention, the inner wall of the anti-theft hinge 2 is provided with a control module 301, which is electrically connected to the capacitive angular displacement sensor 203 and the electric push rod 406.

[0028] In this embodiment, the anti-theft hinge 2 serves as the hinge component between the box body 1 and the box door 3. The control module 301 installed on its inner wall is the core control unit of the anti-theft system. The control module 301 is electrically connected to receive the angle data of the box door 3 transmitted by the capacitive angular displacement sensor 203, so as to monitor the opening and closing status of the box door 3 in real time. On the other hand, it controls the electric push rod 406 to move according to the data command, and drives the limit pin 407 to realize the anti-theft locking. The various structures form a linkage closed loop through electrical connection, so that the anti-theft monitoring and locking actions are precisely coordinated, improving the timeliness and reliability of the meter box's anti-theft response.

[0029] In this invention, the control module 301 includes an MCU control unit and a wireless signal transmission unit; the wireless signal transmission unit is used to send angle abnormality data to the control room, to receive alarm cancellation data sent by the control room, and to send angle abnormality data sent by the MCU control unit; the MCU control unit is used to control the action of the electric push rod 406 and to receive angle data transmitted by the capacitive angular displacement sensor 203 and convert it into angle abnormality data and angle normal data according to the magnitude of the angle data.

[0030] In this embodiment, the control module 301 includes two core components: an MCU control unit and a wireless signal transmission unit. The MCU control unit can receive the angle data of the door 3 transmitted by the capacitive angular displacement sensor 203, convert it into abnormal angle data and normal angle data according to the data size, and can also control the electric push rod 406 to achieve anti-theft locking according to the data instructions. The wireless signal transmission unit is responsible for receiving the abnormal angle data sent by the MCU control unit and sending it to the control room, and at the same time receiving the alarm cancellation data sent by the control room. The two work together to enable the control module 301 to have data processing, equipment control and remote communication functions, realizing intelligent and remote management of meter box anti-theft.

[0031] In this invention, when the door 3 is normally closed, the angle data of the capacitive angular displacement sensor 203 is 0°; when the angle data transmitted by the capacitive angular displacement sensor 203 is greater than or equal to 10°, the angle data is converted into abnormal angle data; when the angle data transmitted by the capacitive angular displacement sensor 203 is between 0° and 10°, the angle data is converted into normal angle data.

[0032] In this embodiment, the capacitive angular displacement sensor 203 reflects the state of the door 3 through angle data. When the door 3 is normally closed, its angle data is 0°. When the transmitted angle data is ≥10°, the data is converted into abnormal angle data. When the angle data is between 0° and 10°, it is converted into normal angle data. This hierarchical judgment mechanism can accurately distinguish between normal micro-movement and abnormal opening of the door 3, providing a clear state basis for the control module 301, ensuring that the electric push rod 406 is activated and locked only under abnormal conditions. This avoids accidental triggering that affects normal operation and can respond to illegal intrusion in a timely manner, improving the accuracy and reliability of the anti-theft system.

[0033] In this invention, a fixing frame 5 is fixed inside the housing 1, and a terminal block assembly 6, an energy detection assembly 7, and a current transformer assembly 8 are provided on the fixing frame 5.

[0034] In this embodiment, the fixed frame 5 inside the housing 1 provides a stable mounting carrier for each core functional component. The terminal block assembly 6 on the fixed frame 5 is used to organize cable connections and avoid faults caused by messy wiring. The power detection component 7 can monitor power metering data in real time to ensure metering accuracy. The current transformer assembly 8 can realize the transformation and isolation of current and voltage to ensure power safety. The fixed frame 5 integrates the three in an orderly manner, which not only improves the utilization rate of the internal space of the housing 1, but also reduces the interference between the components, making the power metering and safety protection functions of the metering box more stable and reliable.

[0035] In this invention, the fixing plate 201 includes a first metal plate 201a, a first mounting hole 201b is provided on the first metal plate 201a, and rotating holes 201c matching the rotating shaft 204 are provided on the first metal plate 201a from top to bottom.

[0036] In this embodiment, the first metal piece 201a of the fixing piece 201 provides rigid support for the hinge structure. The first mounting hole 201b on the first metal piece 201a is used to securely install the fixing piece 201 on the housing 1. The rotating hole 201c arranged from top to bottom matches the rotating shaft 204, providing a rotation fulcrum for the rotating shaft 204, ensuring that the movable piece 202 smoothly opens and closes the door 3 through the rotating shaft 204. At the same time, the precise cooperation between the rotating hole 201c and the rotating shaft 204 can ensure the accuracy of the capacitive angular displacement sensor 203 in detecting the angle of the door 3. All structures work together to improve the structural stability and functional reliability of the anti-theft hinge 2.

[0037] In this invention, the movable piece 202 includes a second metal piece 202a, a second mounting hole 202b is provided on the second metal piece 202a, and a fixing part 202c that is rotatably connected to the rotating shaft 204 is provided at the upper and lower ends of the edge of the second metal piece 202a.

[0038] In this embodiment, the second metal plate 202a of the movable piece 202 provides a stable structural foundation for itself. The second mounting hole 202b on the second metal plate 202a is used to fix the movable piece 202 to the door 3, ensuring the reliability of the connection between the two. The fixing parts 202c at the upper and lower ends of the edge of the second metal plate 202a are rotatably connected to the rotating shaft 204, so that the movable piece 202 can rotate synchronously with the rotating shaft 204, thereby driving the door 3 to open and close smoothly. At the same time, the precise cooperation between the fixing part 202c and the rotating shaft 204 also provides a stable mechanical foundation for the capacitive angular displacement sensor 203 to detect the angle of the door 3, improving the accuracy of angle detection.

[0039] In this invention, the rotating shaft 204 includes a lower rotating shaft 204a and an upper rotating shaft 204c. A journal 204b is provided between the lower rotating shaft 204a and the upper rotating shaft 204c. The journal 204b is located inside the detection end of the capacitive angular displacement sensor 203. A connecting portion 204d is provided at the ends of both the lower rotating shaft 204a and the upper rotating shaft 204c.

[0040] In this embodiment, the lower rotating shaft 204a and the upper rotating shaft 204c of the rotating shaft 204 are connected to the fixed part 202c of the movable piece 202 through the connecting parts 204d at both ends, so as to realize the synchronous rotation of the movable piece 202 and the rotating shaft 204. The journal 204b between the lower rotating shaft 204a and the upper rotating shaft 204c is placed inside the detection end of the capacitive angular displacement sensor 203, which can accurately transmit the angle change when the rotating shaft 204 rotates, providing a stable detection reference for the sensor. All parts work together to ensure that the rotating shaft 204 serves as both the rotating shaft for opening and closing the door 3 and can cooperate with the capacitive angular displacement sensor 203 to achieve accurate angle monitoring, thereby improving the mechanical stability and sensing accuracy of the anti-theft hinge 2.

[0041] In daily use, the box body 1 serves as the overall load-bearing structure. The terminal block assembly 6 on the internal mounting frame 5 connects external cables to internal equipment. The power detection assembly 7 collects power data in real time, and the current transformer assembly 8 transforms current and voltage to ensure metering accuracy. The heat dissipation vent 101 on one side of the box body 1 continuously dissipates heat generated by the internal equipment, while the wiring hole 102 standardizes cable routing to prevent tangling. The box door 3 is connected to the box body 1 via an anti-theft hinge 2. When the box door 3 needs to be opened normally, the door 3 actuates the movable piece 20. The second metal plate 202a of the 2 rotates, and the movable plate 202 drives the lower rotating shaft 204a and the upper rotating shaft 204c of the rotating shaft 204 to rotate synchronously through the fixed part 202c. At this time, the journal 204b of the rotating shaft 204 rotates within the detection end of the capacitive angular displacement sensor 203. The sensor detects the angle change in real time. If the angle is between 0° and 10°, the MCU control unit of the control module 301 determines it as normal angle data and does not trigger the anti-theft action. The door 3 can slide on the slide rail 401 through the slider 402, cooperating with the first connecting rod 403 and the second The connecting rod 404 and the fixed block 405 open and close smoothly in conjunction. When the door 3 is illegally pried open, causing an angle ≥10°, the angle data transmitted by the capacitive angular displacement sensor 203 is converted into abnormal angle data by the MCU control unit. The MCU then controls the electric push rod 406 to extend under the guidance of the guide cylinder 408, driving the limit pin 407 to penetrate the side wall of the slide rail 401, blocking the slider 402 from moving towards the door 3, and locking the door 3 through the linkage structure. At the same time, the wireless signal transmission unit sends the abnormal angle data to the control room, which can then remotely control the door. After checking for abnormalities and confirming that the problem has been resolved, alarm cancellation data is sent. The wireless signal transmission unit receives the data and sends it back to the MCU control unit. The MCU then controls the electric push rod 406 to retract, causing the limit pin 407 to exit the slide rail 401, releasing the restriction on the slider 402, and restoring the normal opening and closing function of the door 3. Throughout the process, the heat dissipation hole fixing piece 201 of the anti-theft hinge 2 is fixed to the housing 1 through the first mounting hole 201b of the first metal piece 201a, and the rotating hole 201c provides stable support for the rotating shaft 204, ensuring that the overall structure and the sensing system work together.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A theft-proof electricity metering box, comprising a box body (1), characterized in that, The cabinet (1) is hinged to the door (3) by an anti-theft hinge (2). The anti-theft hinge (2) includes a fixing piece (201). A rotating shaft (204) is rotatably mounted on the fixing piece (201). The rotating shaft (204) is fixed on the upper and lower sides of the movable piece (202). A fixed capacitive angular displacement sensor (203) is provided inside the fixing piece (201). The rotating shaft (204) passes through the detection end of the capacitive angular displacement sensor (203). It also includes an anti-theft mechanism (4), which is disposed between the box body (1) and the box door (3). The anti-theft mechanism (4) includes a slide rail (401), which is horizontally fixed to the inner wall of the box body (1). A slider (402) is horizontally slidably mounted on the slide rail (401). A first connecting rod (403) is rotatably connected to the slider (402). The end of the first connecting rod (403) is rotatably connected to a second connecting rod (404). The end of the second connecting rod (404) is rotatably connected to a fixing block (405). The fixing block (405) is fixed to the inner wall of the box door (3). The anti-theft mechanism (4) also includes an electric push rod (406). The electric push rod (406) is fixed to the inner wall of the box body (1). The extension direction of the extension end of the electric push rod (406) is vertically set and perpendicular to the sliding direction of the slider (402). The extension end of the electric push rod (406) is fixed with a limit pin (407). The limit pin (407) moves through the side wall of the slide rail (401) and restricts the slider (402) from moving toward the box door (3).

2. The anti-theft electricity metering box according to claim 1, characterized in that, The anti-theft mechanism (4) also includes a guide cylinder (408), which is fixed to the inner wall of the box (1), and the electric push rod (406) is movably sleeved inside the limit pin (407).

3. The anti-theft electricity metering box according to claim 1, characterized in that, The box (1) is provided with a heat dissipation hole (101) for heat dissipation and a wiring hole (102) for wiring on one side.

4. The anti-theft electricity metering box according to claim 1, characterized in that, The inner wall of the anti-theft hinge (2) is provided with a control module (301), which is electrically connected to a capacitive angular displacement sensor (203) and an electric push rod (406).

5. The anti-theft electricity metering box according to claim 1, characterized in that, The control module (301) includes an MCU control unit and a wireless signal transmission unit; The wireless signal transmission unit is used to send angle anomaly data to the control room, and to receive alarm cancellation data sent by the control room and angle anomaly data sent by the MCU control unit. The MCU control unit is used to control the movement of the electric push rod (406) and to receive angle data transmitted by the capacitive angular displacement sensor (203) and convert the angle data into abnormal angle data and normal angle data according to the magnitude of the angle data.

6. The anti-theft electricity metering box according to claim 5, characterized in that, When the door (3) is normally closed, the angle data of the capacitive angular displacement sensor (203) is 0°; When the angle data transmitted by the capacitive angular displacement sensor (203) is greater than or equal to 10°, the angle data is converted into the angle abnormality data; When the angle data transmitted by the capacitive angular displacement sensor (203) is between 0° and 10°, the angle data is converted into normal angle data.

7. The anti-theft electricity metering box according to claim 1, characterized in that, The housing (1) is fixed inside a mounting frame (5), on which a terminal block assembly (6), an energy detection assembly (7), and a current transformer assembly (8) are mounted.

8. The anti-theft electricity metering box according to claim 1, characterized in that, The fixing plate (201) includes a first metal plate (201a), a first mounting hole (201b) is provided on the first metal plate (201a), and rotating holes (201c) matching the rotating shaft (204) are provided on the first metal plate (201a) from top to bottom.

9. The anti-theft electricity metering box according to claim 1, characterized in that, The movable piece (202) includes a second metal piece (202a), a second mounting hole (202b) is provided on the second metal piece (202a), and a fixing part (202c) is provided at the upper and lower ends of the edge of the second metal piece (202a) to be rotatably connected to the rotating shaft (204).

10. The anti-theft electricity metering box according to claim 1, characterized in that, The rotating shaft (204) includes a lower rotating shaft (204a) and an upper rotating shaft (204c). A journal (204b) is provided between the lower rotating shaft (204a) and the upper rotating shaft (204c). The journal (204b) is located inside the detection end of the capacitive angular displacement sensor (203). Both the lower rotating shaft (204a) and the upper rotating shaft (204c) have a connecting part (204d) at their ends.

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