Intelligent electric meter with electricity larceny prevention function

Abstract

The invention discloses an intelligent electric meter with an electricity larceny prevention function, and relates to the technical field of intelligent electric meters, the intelligent electric meter comprises an electric meter main body, a wire inlet terminal and a wire outlet terminal, and the wire inlet terminal and the wire outlet terminal are located in the electric meter main body. Connection between a power grid and a user can be formed through the wire inlet terminal and the wire outlet terminal, and the electricity consumption of the user is monitored. A switching unit is arranged in the electric meter main body, and the switching unit is used for switching the conductive state of the electric meter main body and a line connected with the wire inlet terminal and / or the wire outlet terminal according to the control signal; the ammeter main body is provided with a detector, and the detector is used for detecting and obtaining electrical parameter changes from the wire inlet terminal to the ammeter main body and from the ammeter main body to the wire outlet terminal, and sending the electrical parameter changes to a control unit configured in the ammeter main body. Based on incoming / outgoing line multi-parameter detection, abnormity can be recognized in real time, current limiting / disconnection can be triggered, and the electricity larceny discovery rate is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of smart meter technology, specifically to a smart meter with anti-theft function. Background Technology

[0002] Electricity theft refers to the act of obtaining or underpaying or evading electricity bills through illegal means. It is usually done by unauthorized wiring, tampering with or damaging metering devices, short-circuiting meter circuits, or using cheating devices to obtain electricity without paying the required fees.

[0003] CN119125635A discloses a smart meter with anti-theft function, including a housing and a meter body; the outer wall of the meter body is fixed to the inner wall of the housing; a sealing plate is fixed to the inner wall of the housing, and the sealing plate matches the meter body; a cover plate is hinged to the bottom of the outer wall of the sealing plate; an anti-theft module detects abnormal information and starts a first motor, which drives a threaded shaft to rotate. The rotation of the threaded shaft causes an insulating plate and a power connection plate to move upward. The upward movement of the power connection plate will contact the first connection end on the alarm device, so that power is transferred from the power connection plate to the first connection end and the alarm device. The energized alarm device will sound an alarm to remind staff and users that someone is stealing electricity.

[0004] Meanwhile, CN116539938A discloses a smart meter for preventing electricity theft, which includes: a meter assembly, a protective assembly, a processor, a detection unit, a communication unit, and an alarm unit. The meter assembly includes a support plate, a meter, a slide groove, and a baffle. The meter is mounted on the front of the support plate, slide grooves are provided on both sides of the support plate, and a baffle is provided at the bottom of the support plate. The protective assembly is mounted on the slide groove and includes a sliding cover, an electronic control box, and a pressure contact unit. The sliding cover is connected to the slide groove, and the electronic control box is located on the top inner side of the sliding cover. The pressure contact unit is located on the top inner cavity of the electronic control box. The pressure contact unit contacts the meter and is in a triggered state, which connects the circuit of the detection unit to realize the detection of electricity theft. In use, the sliding cover protects the outside of the meter to prevent wire-connected electricity theft.

[0005] However, electricity theft is generally carried out in two ways: one is by opening the meter box and connecting the wires at the meter to steal electricity, and the other is by directly connecting the wires from the meter to the household to steal electricity.

[0006] The first method, which involves locking the meter box or using an alarm, can effectively prevent electricity theft. However, the second method does not require opening the meter box; it only requires damaging the incoming line and reconnecting the wires to steal electricity.

[0007] Therefore, this application provides a smart meter that can detect whether there is electricity theft on the main line into a user's home. Summary of the Invention

[0008] One of the objectives of this invention is to provide a smart meter with anti-theft function, which can realize autonomous detection of electricity theft and prevent electricity theft.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solution: a smart meter with anti-theft function, comprising a meter body, an inlet terminal, and an outlet terminal.

[0010] The incoming and outgoing terminals are located inside the main body of the meter. These terminals connect the power grid to the user and monitor the user's electricity consumption.

[0011] In one or more embodiments of the present invention, a switching unit is provided inside the meter body. The switching unit is used to switch the conductivity state of the line connected to the meter body and the incoming terminal and / or outgoing terminal according to the control signal. The meter body is equipped with a detector, which is used to detect and acquire changes in electrical parameters from the incoming terminal to the meter body and from the meter body to the outgoing terminal, and sends the changes in electrical parameters to the control unit configured inside the meter body so that the switching unit can make control decisions.

[0012] By setting a switching unit that can switch the conductivity state of the connection line, the connection line between the meter and the power grid and the user can be switched.

[0013] In one or more embodiments of the present invention, both the incoming terminal and the outgoing terminal are provided with at least two terminal ports, and each terminal port can be connected to a power line. The switching unit is electrically connected to each terminal port, and for each terminal port, the switching unit has at least three working states: detection state, disconnection state, and connection state. The control unit switches the corresponding terminal switching unit to the off state or on state based on the changes in electrical parameters when the detector acquires the detection status.

[0014] The switching unit is configured with three working states: detection state, disconnected state, and connected state. The switching of the switching unit can be preset.

[0015] In one or more embodiments of the present invention, the switching unit includes a first connecting end, a second connecting end, and a spring piece disposed between the first connecting end and the second connecting end; The first connecting end, the second connecting end, and the spring are all made of conductive material. The first electromagnet and the second electromagnet are respectively arranged on both sides of the spring to control the bending or contact state of the spring.

[0016] In one or more embodiments of the present invention, the state of the spring piece is controlled by a first electromagnet and a second electromagnet to switch whether the first connecting end and the second connecting end are connected: When the spring is in the contact state, the first connection end and the second connection end are electrically connected; When the spring is in the separated state, the first connection end is electrically disconnected from the second connection end.

[0017] In one or more embodiments of the present invention, the first connecting end is electrically connected to the meter body, the second connecting end is electrically connected to the terminal port, and an elastic element is provided on the outside of the first connecting end to elastically support the first connecting end on the meter body, so that the first connecting end can be disengaged from the connection position of the meter body under the elastic force of the elastic element.

[0018] In one or more embodiments of the present invention, the switching unit includes a first guide rod, a second guide rod, and a control component. A first connecting contact point is fixed on the side of the first guide rod facing the meter body, and a second connecting contact point is fixed on the side of the second guide rod facing the terminal opening. The meter body has a guide groove inside for restricting the movement of the first guide rod and the second guide rod. The control component is connected to the first guide rod and the second guide rod and drives them to move relative to or synchronously along the guide groove, so as to realize the electrical contact or separation of the first connecting contact point and the second connecting contact point at a predetermined position.

[0019] In one or more embodiments of the present invention, the control component includes a fixed frame disposed inside the main body of the meter and a foldable extension frame disposed on both sides of the fixed frame, wherein the two ends of the extension frame are respectively hinged to the fixed frame and the first guide rod or the second guide rod through hinges. The fixed frame has a bracket sleeved in the middle of the extension frame. The fixed frame also has a first electromagnetic block and a second electromagnetic block. The second electromagnetic block is connected to the bracket. The first electromagnetic block and the second electromagnetic block work together to control the axial extension and retraction of the bracket.

[0020] In one or more embodiments of the present invention, the first electromagnetic block is fixed inside the fixed frame, and the second electromagnetic block is fixed outside the support. The first electromagnetic block and the second electromagnetic block cooperate to change the extension state of the support, thereby controlling the extension state of the extension frame.

[0021] In one or more embodiments of the present invention, the switching unit includes an adjustment disk disposed on the main body of the meter and capable of rotating relative to the main body of the meter, and the adjustment disk has a plurality of connecting lines inside. The meter body has a first conductive terminal and a second conductive terminal. When the two ends of the connecting line come into contact with the first conductive terminal and the second conductive terminal, the first conductive terminal and the second conductive terminal are electrically connected.

[0022] In one or more embodiments of the present invention, a drive unit is further provided inside the main body of the meter. The drive unit drives the adjustment disk to rotate at a predetermined angle to select any one of the connected lines. The adjustment disk corresponds to the detection state, the connected state, or the disconnected state at different rotation angles.

[0023] In one or more embodiments of the present invention, the drive disk includes a first connecting disk, a second connecting disk, and a third connecting disk; The first connecting plate, the second connecting plate, and the third connecting plate are respectively connected to the drive assembly and can rotate independently. The connecting lines inside the first connecting plate, the second connecting plate, and the third connecting plate are made of different materials to achieve different electrical characteristics.

[0024] In one or more embodiments of the present invention, the drive unit includes a drive motor, a transmission frame is provided between the drive motor and the drive disk, a drive wheel and a driven wheel are provided in the middle of the transmission frame, the drive wheel and the driven wheel mesh, and the drive wheel drives the drive disk to rotate through the driven wheel; a connecting rod is also provided in the middle of the transmission frame, and a first ball is provided on the inner side of the end of the connecting rod and supported by a support spring; Slots are provided on the drive wheels corresponding to the second and third connecting discs. When the drive motor drives the connecting rod to rotate in the forward and reverse directions, the connecting rod drives the second or third connecting disc to rotate respectively.

[0025] In one or more embodiments of the present invention, a plurality of circumferential positioning grooves are formed inside the main body of the meter, and the positioning grooves are arranged at uniform intervals along the circumference. At least one second ball bearing is disposed on the inner side of the second connecting plate and the third connecting plate. The second ball bearing engages with the positioning groove to achieve mechanical positioning when the second connecting plate and the third connecting plate rotate to a predetermined angle.

[0026] Through the above technical solution, the present invention has the following beneficial effects: 1. Based on multi-parameter detection of incoming / outgoing lines (current, voltage, power, phase angle, harmonics, etc.), it can identify abnormalities in real time and trigger current limiting / disconnection, significantly improving the detection rate of electricity theft. It samples the electrical parameters from the incoming line to the meter body and from the meter body to the outgoing line, improving the ability to distinguish power imbalance and bypass detection.

[0027] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the first embodiment of the present invention; Figure 2 This is a schematic diagram of the terminal port of the present invention; Figure 3 This is a structural diagram of the switching unit according to the second embodiment of the present invention; Figure 4 This is a schematic diagram of the switching unit of the present invention; Figure 5This is a schematic diagram of the switching unit according to the third embodiment of the present invention; Figure 6 This is a plan view of the switching unit according to the third embodiment of the present invention; Figure 7 This is a plan view of the control component of the present invention; Figure 8 This is a schematic diagram of the switching unit in the fourth embodiment of the present invention; Figure 9 This is a schematic diagram of the connection structure between the drive unit and the adjustment disk of the present invention; Figure 10 This is a schematic diagram of the connecting lines of the present invention; Figure 11 This is a schematic diagram of the second ball bearing of the present invention; Figure 12 This is a schematic diagram of the positioning groove of the present invention; Figure 13 This is a schematic diagram of the card slot of the present invention.

[0029] In the diagram: 1. Meter body, 2. Incoming terminal, 3. Outgoing terminal, 4. Switching unit, 5. Terminal port; 41a First connecting end, 42a Second connecting end, 43a Spring piece, 44a First electromagnet, 45a Second electromagnet, 46a Elastic element; 41b First guide rod, 42b Second guide rod, 43b Control assembly, 44b First connecting contact point, 45b Second connecting contact point, 46b Guide groove; 431 Fixed frame, 432 Extending frame, 433 Support, 434 First electromagnetic block, 435 Second electromagnetic block; 41c Adjustment plate, 42c Connecting line, 43c First conductive terminal, 44c Second conductive terminal, 45c Drive unit; 411 First connecting plate, 412 Second connecting plate, 413 Third connecting plate; 451 Drive motor, 452 Transmission frame, 453 Drive wheel, 454 Driven wheel, 455 Connecting rod, 456 First ball bearing, 457 Support spring, 458 Slot, 459 Second ball bearing, 4510 Positioning slot. Detailed Implementation

[0030] The following describes several embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. And features of different embodiments may be interchanged if feasible.

[0031] Unless otherwise defined, all terms used herein (including technical and scientific terms) have their ordinary meanings, which are understandable to those skilled in the art. Furthermore, the definitions of the foregoing terms in commonly used dictionaries should be interpreted in the context of this specification as having the meaning consistent with the relevant field of this invention. Unless specifically defined, these terms will not be construed as having idealized or overly formal meanings.

[0032] The following explains the relationships and terms used in this application: Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism. It allows for situations where the parallelism is not absolute due to factors such as assembly tolerance, design tolerance, and structural flatness. It also allows for errors within a small angular range, such as within 10 degrees of assembly error. These can all be considered as parallel relationships.

[0033] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0034] Ground: The ground as defined in this application is not limited to a specific material or region, but simply refers to a platform on which this application is supported, and allows for stacking, tilting, and variations in flatness. For example, cement floors, tile floors, work platforms, etc., can all be interpreted as ground.

[0035] The above explanation does not fully encompass the relationship definition given in this application, but only represents a part of it.

[0036] First Embodiment See Figure 1-2 As shown, the first embodiment of the present invention provides a smart meter with anti-theft function, which includes a meter body 1, an inlet terminal 2, and an outlet terminal 3.

[0037] The incoming terminal 2 and the outgoing terminal 3 are located inside the main body 1 of the meter. The incoming terminal 2 and the outgoing terminal 3 enable the connection between the power grid and the user, and monitor the user's electricity consumption.

[0038] In a further embodiment of the first embodiment, a switching unit 4 is provided inside the meter body 1. The switching unit 4 is used to switch the conductivity state of the line connected to the meter body 1 and the incoming terminal 2 and / or the outgoing terminal 3 according to the control signal. The meter body 1 is equipped with a detector, which is used to detect and acquire changes in electrical parameters from the incoming terminal 2 to the meter body 1 and from the meter body 1 to the outgoing terminal 3, and send the changes in electrical parameters to the control unit configured inside the meter body 1 so that the switching unit 4 can make control decisions.

[0039] By setting a switching unit 4 that can switch the conductivity state of the connection line, the connection line between the meter and the power grid and the user can be switched.

[0040] For example, there are two power supply lines between the power grid and the electricity meter, and two power supply lines between the electricity meter and the user. When electricity is stolen from one of the lines, the switching unit 4 is used to switch to the other line, and the changes in electrical parameters are monitored by the detector to determine the changes in the power consumption status before and after the switch, thereby determining whether electricity theft has occurred.

[0041] If the electrical parameters of the two lines change little or not at all before and after switching, then the electricity is used normally. For example, when line one is energized, the rated voltage is 230V and the current is 35A. When line two is energized, the rated voltage is 230V and the current is 34.8A. In this case, there is no electricity theft.

[0042] Electricity theft occurs when the electrical parameters of two lines change significantly before and after switching. For example, if the rated voltage of line one is 230V and the current is 35A when line two is energized, and the rated voltage of line two is 230V and the current is 23.4A when line one is energized, then electricity theft is occurring.

[0043] Among them, inconsistent household electricity usage is identified. Peak current and variation thresholds are set based on household conditions. When the peak current or variation threshold is exceeded, electricity theft is considered.

[0044] Both the incoming terminal 2 and the outgoing terminal 3 are provided with at least two terminal ports 5, and each terminal port 5 can be connected to a power line. The switching unit 4 is electrically connected to each terminal port 5, and for each terminal port 5, the switching unit 4 has at least three working states: detection state, disconnection state, and connection state. The control unit switches the switching unit 4 of the corresponding terminal port 5 to the off state or on state based on the changes in electrical parameters when the detector obtains the detection status.

[0045] The switching unit 4 is configured with three working states: detection state, disconnection state, and connection state, and the switching of the switching unit 4 can be preset.

[0046] This application does not restrict the detection state. It can disconnect the power supply line first and then connect another line before detection. Alternatively, both power supply lines can be connected at the same time, and then the first line can be disconnected to obtain the changes in electrical parameters during the process.

[0047] Second Embodiment See Figure 3-4 As shown, the second embodiment of the present invention provides a smart meter with anti-theft function, comprising a meter body 1, an incoming terminal 2, and an outgoing terminal 3; the incoming terminal 2 and the outgoing terminal 3 are located inside the meter body 1; a switching unit 4 is provided inside the meter body 1, which is used to switch the conductivity state of the lines connected to the meter body 1 and the incoming terminal 2 and / or the outgoing terminal 3 according to a control signal; the meter body 1 is equipped with a detector, which is used to detect and acquire the changes in electrical parameters from the incoming terminal 2 to the meter body 1 and from the meter body 1 to the outgoing terminal 3, and send the changes in electrical parameters to the control unit configured inside the meter body 1 so that the switching unit 4 can make a control decision.

[0048] The switching unit 4 is electrically connected to each terminal port 5, and for each terminal port 5, the switching unit 4 has at least three working states: detection state, disconnected state, and connected state. The control unit switches the switching unit 4 of the corresponding terminal port 5 to the disconnected state or the connected state based on the change in electrical parameters obtained by the detector when the detection state is obtained. Since its structure and function are the same as those in Embodiment 1, its effects will not be described in detail in this embodiment.

[0049] The switching unit 4 includes a first connection end 41a, a second connection end 42a, and a spring piece 43a disposed between the first connection end 41a and the second connection end 42a. The first connecting end 41a, the second connecting end 42a, and the spring piece 43a are all made of conductive material. The first electromagnet 44a and the second electromagnet 45a are respectively arranged on both sides of the spring piece 43a to control the bending or contact state of the spring piece 43a.

[0050] Therefore, by controlling the state of the spring piece 43a through the first electromagnet 44a and the second electromagnet 45a, the connection status of the first connecting end 41a and the second connecting end 42a can be switched. When the spring 43a is in the contact state, the first connecting end 41a and the second connecting end 42a are electrically connected; When the spring piece 43a is in the separated state, the first connection end 41a and the second connection end 42a are electrically disconnected.

[0051] In a further embodiment of the second embodiment, the first connecting end 41a is electrically connected to the meter body 1, the second connecting end 42a is electrically connected to the terminal port 5, and an elastic member 46a is provided on the outside of the first connecting end 41a to elastically support the first connecting end 41a on the meter body 1, so that the first connecting end 41a can be separated from the connection position of the meter body 1 under the elastic force of the elastic member 46a.

[0052] When the spring piece 43a is in contact under the control of the first electromagnet 44a and the second electromagnet 45a, the spring piece 43a synchronously pushes the first connecting end 41a to overcome the elastic force of the elastic element 46a, so that the first connecting end 41a forms an electrical connection with the meter body 1.

[0053] Third Embodiment See Figure 5-7 As shown, the third embodiment of the present invention provides a smart meter with anti-theft function, comprising a meter body 1, an incoming terminal 2, and an outgoing terminal 3; the incoming terminal 2 and the outgoing terminal 3 are located inside the meter body 1; a switching unit 4 is provided inside the meter body 1, which is used to switch the conductivity state of the lines connected to the meter body 1 and the incoming terminal 2 and / or the outgoing terminal 3 according to a control signal; the meter body 1 is equipped with a detector, which is used to detect and acquire the changes in electrical parameters from the incoming terminal 2 to the meter body 1 and from the meter body 1 to the outgoing terminal 3, and send the changes in electrical parameters to the control unit configured inside the meter body 1 so that the switching unit 4 can make a control decision.

[0054] The switching unit 4 is electrically connected to each terminal port 5, and for each terminal port 5, the switching unit 4 has at least three working states: detection state, disconnected state, and connected state. The control unit switches the switching unit 4 of the corresponding terminal port 5 to the disconnected state or the connected state based on the change in electrical parameters obtained by the detector when the detection state is obtained. Since its structure and function are the same as those in Embodiment 1, its effects will not be described in detail in this embodiment.

[0055] The switching unit 4 includes a first guide rod 41b, a second guide rod 42b, and a control component 43b. A first connecting contact point 44b is fixed to the side of the first guide rod 41b facing the meter body 1, and a second connecting contact point 45b is fixed to the side of the second guide rod 42b facing the terminal port 5. The meter body 1 has a guide groove 46b inside to restrict the movement of the first guide rod 41b and the second guide rod 42b. The control component 43b is connected to the first guide rod 41b and the second guide rod 42b and drives them to move relative to each other or synchronously along the guide groove 46b, so as to realize the electrical contact or separation of the first connecting contact point 44b and the second connecting contact point 45b at a predetermined position.

[0056] The guide groove 46b restricts the movement path of the first guide rod 41b and the second guide rod 42b. When the control component 43b controls the movement of the first guide rod 41b and the second guide rod 42b, they move along the guide groove 46b. The control component 43b can simultaneously control the extension and retraction of the first guide rod 41b and the second guide rod 42b.

[0057] The control component 43b includes a fixed frame 431 disposed inside the meter body 1 and a foldable extension frame 432 disposed on both sides of the fixed frame 431. The two ends of the extension frame 432 are respectively hinged to the fixed frame 431 and the first guide rod 41b or the second guide rod 42b through hinges. The inner side of the fixed frame 431 is provided with a bracket 433 sleeved in the middle of the extension frame 432. The fixed frame 431 is also equipped with a first electromagnetic block 434 and a second electromagnetic block 435. The second electromagnetic block 435 is connected to the bracket 433. The first electromagnetic block 434 and the second electromagnetic block 435 work together to control the bracket 433 to extend and retract axially.

[0058] The first electromagnetic block 434 is fixed inside the fixed frame 431, and the second electromagnetic block 435 is fixed outside the support 433. The first electromagnetic block 434 and the second electromagnetic block 435 work together to change the extension state of the support 433, thereby controlling the extension state of the extension frame 432.

[0059] Furthermore, the extension frame 432 consists of two frames, so that the extension frame 432 can be folded.

[0060] Fourth embodiment See Figure 8-13 As shown, the fourth embodiment of the present invention provides a smart meter with anti-theft function, comprising a meter body 1, an incoming terminal 2, and an outgoing terminal 3; the incoming terminal 2 and the outgoing terminal 3 are located inside the meter body 1; a switching unit 4 is provided inside the meter body 1, which is used to switch the conductivity state of the lines connected to the meter body 1 and the incoming terminal 2 and / or the outgoing terminal 3 according to a control signal; the meter body 1 is equipped with a detector, which is used to detect and acquire the changes in electrical parameters from the incoming terminal 2 to the meter body 1 and from the meter body 1 to the outgoing terminal 3, and send the changes in electrical parameters to the control unit configured inside the meter body 1 for the switching unit 4 to make control decisions.

[0061] The switching unit 4 is electrically connected to each terminal port 5, and for each terminal port 5, the switching unit 4 has at least three working states: detection state, disconnected state, and connected state. The control unit switches the switching unit 4 of the corresponding terminal port 5 to the disconnected state or the connected state based on the change in electrical parameters obtained by the detector when the detection state is obtained. Since its structure and function are the same as those in Embodiment 1, its effects will not be described in detail in this embodiment.

[0062] The switching unit 4 includes an adjustment disk 41c disposed on the meter body 1 and capable of rotating relative to the meter body 1. Several connecting lines 42c are opened inside the adjustment disk 41c. The meter body 1 is provided with a first conductive terminal 43c and a second conductive terminal 44c. When the two ends of the connecting line 42c come into contact with the first conductive terminal 43c and the second conductive terminal 44c, the first conductive terminal 43c and the second conductive terminal 44c are electrically connected.

[0063] Multiple connecting lines 42c are provided, which can contact multiple second conductive terminals 44c after switching, and can switch to detection state, disconnection state or connection state, thereby changing the working state of the corresponding terminal port 5.

[0064] In addition, a drive unit 45c is provided inside the main body 1 of the meter. The drive unit 45c drives the adjustment disk 41c to rotate at a predetermined angle to select any one of the connected lines 42c. The adjustment disk 41c corresponds to the detection state, the connected state or the disconnected state at different rotation angles.

[0065] In a further embodiment of the fourth embodiment, the drive disk includes a first connecting disk 411, a second connecting disk 412, and a third connecting disk 413; The first connecting plate 411, the second connecting plate 412 and the third connecting plate 413 are respectively connected to the drive assembly and can rotate independently. The connecting lines 42c located inside the first connecting plate 411, the second connecting plate 412 and the third connecting plate 413 are made of different materials to achieve different electrical characteristics.

[0066] The drive unit 45c includes a drive motor 451, a transmission frame 452 between the drive motor 451 and the drive disk, a drive wheel 453 and a driven wheel 454 are arranged in the middle of the transmission frame 452, the drive wheel 453 and the driven wheel 454 mesh, and the drive wheel 453 drives the drive disk to rotate through the driven wheel 454; a connecting rod 455 is also arranged in the middle of the transmission frame 452, and a first ball 456 is arranged on the inner side of the end of the connecting rod 455 and supported by a support spring 457; A slot 458 is provided on the drive wheel 453 corresponding to the second connecting plate 412 and the third connecting plate 413. When the drive motor 451 drives the connecting rod 455 to rotate in the forward and reverse directions, the connecting rod 455 drives the second connecting plate 412 or the third connecting plate 413 to rotate respectively.

[0067] The meter body 1 has several circumferential positioning grooves 4510 inside, and the positioning grooves 4510 are evenly spaced along the circumference. At least one second ball bearing 459 is disposed on the inner side of the second connecting plate 412 and the third connecting plate 413. The second ball bearing 459 engages with the positioning groove 4510 to achieve mechanical positioning when the second connecting plate 412 and the third connecting plate 413 rotate to a predetermined angle.

[0068] Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A smart meter with anti-theft function, characterized in that, Includes the meter body (1), inlet terminal (2), outlet terminal (3); The incoming terminal (2) and the outgoing terminal (3) are located inside the meter body (1); The meter body (1) is provided with a switching unit (4) inside. The switching unit (4) is used to switch the conductivity state of the line connected to the meter body (1) and the incoming terminal (2) and / or the outgoing terminal (3) according to the control signal. The meter body (1) is equipped with a detector, which is used to detect and acquire changes in electrical parameters from the incoming terminal (2) to the meter body (1) and from the meter body (1) to the outgoing terminal (3), and send the changes in electrical parameters to the control unit configured inside the meter body (1) so that the switching unit (4) can make control decisions.

2. A smart meter with anti-theft function according to claim 1, characterized in that, Both the incoming terminal (2) and the outgoing terminal (3) are provided with at least two terminal ports (5), and each terminal port (5) can be connected to a power line; The switching unit (4) is electrically connected to each terminal port (5), and for each terminal port (5), the switching unit (4) has at least three working states: detection state, disconnection state and connection state. The control unit switches the switching unit (4) of the corresponding terminal port (5) to the off state or on state based on the change in electrical parameters when the detector obtains the detection state.

3. A smart meter with anti-theft function according to claim 2, characterized in that, The switching unit (4) includes a first connection end (41a), a second connection end (42a), and a spring piece (43a) disposed between the first connection end (41a) and the second connection end (42a). The first connecting end (41a), the second connecting end (42a) and the spring piece (43a) are all made of conductive material. A first electromagnet (44a) and a second electromagnet (45a) are respectively arranged on both sides of the spring piece (43a) to control the bending or contact state of the spring piece (43a). When the spring piece (43a) is in the contact state, the first connecting end (41a) and the second connecting end (42a) are electrically connected; When the spring piece (43a) is in the separated state, the first connecting end (41a) is electrically disconnected from the second connecting end (42a).

4. A smart meter with anti-theft function according to claim 3, characterized in that, The first connecting end (41a) is electrically connected to the meter body (1), and the second connecting end (42a) is electrically connected to the terminal port (5); An elastic element (46a) is provided on the outside of the first connecting end (41a) to elastically support the first connecting end (41a) on the meter body (1), so that the first connecting end (41a) can be disengaged from the connection position of the meter body (1) under the elastic force of the elastic element (46a). When the spring piece (43a) is in contact under the control of the first electromagnet (44a) and the second electromagnet (45a), the spring piece (43a) synchronously pushes the first connecting end (41a) to overcome the elastic force of the elastic element (46a) so that the first connecting end (41a) and the meter body (1) form an electrical connection.

5. A smart meter with anti-theft function according to claim 2, characterized in that, The switching unit (4) includes a first guide rod (41b), a second guide rod (42b), and a control component (43b). The first connecting contact point (44b) is fixed to the side of the first guide rod (41b) facing the meter body (1), and the second connecting contact point (45b) is fixed to the side of the second guide rod (42b) facing the terminal port (5); The meter body (1) has a guide groove (46b) inside for restricting the movement of the first guide rod (41b) and the second guide rod (42b). The control component (43b) is connected to the first guide rod (41b) and the second guide rod (42b) and drives them to move relative to each other or synchronously along the guide groove (46b) so as to realize the electrical contact or separation of the first connecting contact point (44b) and the second connecting contact point (45b) at a predetermined position.

6. A smart meter with anti-theft function according to claim 5, characterized in that, The control component (43b) includes a fixed frame (431) disposed inside the meter body (1) and a foldable extension frame (432) disposed on both sides of the fixed frame (431). The two ends of the extension frame (432) are respectively hinged to the fixed frame (431) and the first guide rod (41b) or the second guide rod (42b) through hinges. The fixed frame (431) is provided with a bracket (433) sleeved in the middle of the extension frame (432) on the inner side. The fixed frame (431) is also provided with a first electromagnetic block (434) and a second electromagnetic block (435). The second electromagnetic block (435) is connected to the bracket (433). The first electromagnetic block (434) and the second electromagnetic block (435) work together to control the bracket (433) to extend and retract axially.

7. A smart meter with anti-theft function according to claim 2, characterized in that, The switching unit (4) includes an adjustment disk (41c) disposed on the meter body (1) and capable of rotating relative to the meter body (1), and the adjustment disk (41c) has a plurality of connecting lines (42c) inside. The meter body (1) is provided with a first conductive end (43c) and a second conductive end (44c). When the two ends of the connecting line (42c) come into contact with the first conductive end (43c) and the second conductive end (44c), the first conductive end (43c) and the second conductive end (44c) are electrically connected. The meter body (1) is also provided with a drive unit (45c), which drives the adjustment disk (41c) to rotate at a predetermined angle to select any one of the connected lines (42c). The adjustment disk (41c) is in a detection state, a connected state, or a disconnected state at different rotation angles.

8. A smart meter with anti-theft function according to claim 7, characterized in that, The drive disk includes a first connecting disk (411), a second connecting disk (412), and a third connecting disk (413). The first connecting plate (411), the second connecting plate (412) and the third connecting plate (413) are respectively connected to the drive assembly and can rotate independently. The connecting lines (42c) located inside the first connecting plate (411), the second connecting plate (412) and the third connecting plate (413) are made of different materials to achieve different electrical characteristics.

9. A smart meter with anti-theft function according to claim 8, characterized in that, The drive unit (45c) includes a drive motor (451), and a transmission frame (452) is provided between the drive motor (451) and the drive disk. A drive wheel (453) and a driven wheel (454) are provided in the middle of the transmission frame (452). The drive wheel (453) meshes with the driven wheel (454), and the drive wheel (453) drives the drive disk to rotate via the driven wheel (454). A connecting rod (455) is also provided in the middle of the transmission frame (452). A first ball bearing (456) is provided on the inner side of the end of the connecting rod (455) and is supported by a support spring (457). Slots (458) are provided on the drive wheels (453) of the second connecting disc (412) and the third connecting disc (413). When the drive motor (451) drives the connecting rod (455) to rotate in the forward and reverse directions, the connecting rod (455) drives the second connecting disc (412) or the third connecting disc (413) to rotate respectively.

10. A smart meter with anti-theft function according to claim 9, characterized in that, The meter body (1) has several circumferential positioning grooves (4510) inside, and the positioning grooves (4510) are evenly spaced along the circumferential direction. At least one second ball bearing (459) is disposed on the inner side of the second connecting plate (412) and the third connecting plate (413). The second ball bearing (459) engages with the positioning groove (4510) to achieve mechanical positioning when the second connecting plate (412) and the third connecting plate (413) rotate to a predetermined angle position.

Images