CN118130861A - Liquid electricity larceny prevention device suitable for electric energy meter - Google Patents
Liquid electricity larceny prevention device suitable for electric energy meter Download PDFInfo
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- CN118130861A CN118130861A CN202410105002.0A CN202410105002A CN118130861A CN 118130861 A CN118130861 A CN 118130861A CN 202410105002 A CN202410105002 A CN 202410105002A CN 118130861 A CN118130861 A CN 118130861A
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- 239000007788 liquid Substances 0.000 title claims abstract description 49
- 230000005611 electricity Effects 0.000 title claims abstract description 42
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 239000000126 substance Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 238000009434 installation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Burglar Alarm Systems (AREA)
Abstract
The invention relates to the technical field of safety protection of metering instruments, in particular to an electricity larceny prevention device suitable for an electric energy meter. The electric energy meter mainly comprises an electric energy meter shell and an MCU detection unit arranged in the electric energy meter shell, and is characterized by further comprising an electricity stealing detection component; the electricity stealing detection assembly comprises a fragile shell arranged in the shell of the electric energy meter, a conductive part fixed in the fragile shell and a signal output part electrically connected with the conductive part; the fragile shell is filled with conductive liquid, and the conductive part is soaked in the conductive liquid to form a conductive path; the signal output part is electrically connected with the MCU detection unit, and when the conductive liquid leaks, the MCU detection unit detects the power-off signal of the conductive part. The anti-electricity-theft device can effectively identify the electricity-theft behavior by damaging the shell fixing structure, has high sensitivity and simple triggering condition, and can effectively prevent potential damage to the fixing structure parts such as the bottom plate or the side plate of the electric energy meter shell by an electricity-theft person, thereby realizing the purpose of avoiding electricity theft.
Description
Technical Field
The invention relates to the technical field of safety protection of metering instruments, in particular to an electricity larceny prevention device suitable for an electric energy meter.
Background
An electric energy meter is a device for measuring electric energy consumption, and is generally installed on an electric power supply line inside or outside a building. They can measure the current and voltage through the wire and then calculate the amount of electrical energy consumed. For providing accurate power usage data to consumers and power supply companies for billing and monitoring power usage. The electric energy meter generally comprises an MCU detection unit, which comprises a microprocessor, a memory, a communication module and the like. The microprocessor is used for processing the measured current and voltage data and calculating to obtain the electric energy consumption; the memory is used for storing historical data and parameter settings; the communication module is used for exchanging data with other systems, such as communication with a data acquisition system of an electric company.
The MCU detection unit is usually arranged in an electric energy meter shell, the electric energy meter shell is used for protecting the electric energy meter shell, and important components such as a microprocessor, a memory and a communication module in the electric energy meter shell are prevented from being maliciously modified or wiring is prevented from being stolen by an electricity thief, so that false data are acquired, calculated and uploaded, and the purpose of illegal electricity utilization is achieved by the electricity thief. In the existing partial electric energy meter shell structure, warning components such as a micro switch and an alarm circuit are arranged in the shell structure to monitor the states of key movable shell components, such as a meter shell cover, a module box cover, a terminal seat cover, an installation meter box door and the like. If the movable shell part is opened by the fraudulent use of electricity, the MCU detection unit is modified or destroyed, and the warning part can automatically detect and send out warning. Therefore, the purpose of avoiding fraudulent use of electricity of the electric energy meter is achieved to a certain extent.
However, the arrangement of the warning component also provides another electricity stealing thought for the electricity stealer, namely the electricity stealer can directly damage the fixed structure part of the shell to realize the purpose of modifying the MCU detection unit. For example, the bottom plate or the side plate of the shell of the electric energy meter is broken by the breaking tool, the parts such as the microprocessor or the memory are directly taken out to tamper or bypass the wiring, and at the moment, the alarm part cannot exert the normal design effect, so that the electricity larceny prevention function is invalid.
Disclosure of Invention
The invention aims to provide the liquid electricity larceny prevention device suitable for the electric energy meter, which is more rigorous and comprehensive in electricity larceny prevention, can effectively identify the electricity larceny by damaging the shell fixing structure, has high sensitivity and simple triggering condition, and can effectively prevent potential damage to the fixing structure parts such as the bottom plate or the side plate of the electric energy meter shell by an electricity larceny person, thereby realizing the purpose of electricity larceny prevention.
In order to achieve the above purpose, the invention adopts the following specific scheme:
The liquid electricity larceny prevention device suitable for the electric energy meter comprises an electric energy meter shell and an MCU detection unit arranged in the electric energy meter shell, and is characterized by further comprising an electricity larceny detection assembly; the electricity larceny detection assembly comprises a fragile shell arranged in the electric energy meter shell, a conductive part fixed in the fragile shell and a signal output part electrically connected with the conductive part; the fragile shell is filled with conductive liquid, and the conductive part is soaked in the conductive liquid to form a conductive path; the signal output part is electrically connected with the MCU detection unit, and when the conductive liquid leaks, the MCU detection unit detects a power-off signal of the conductive part.
Therefore, the liquid anti-electricity-theft device realizes the protection function mainly through the electricity-theft detection component arranged in the shell of the electric energy meter. Specifically, the electricity larceny detection assembly is composed of a fragile shell, a conductive part fixed in the fragile shell and a signal output part electrically connected with the conductive part, wherein the fragile shell is made of a hard material with a thinner wall thickness and is mounted close to an inactive part of the electric energy meter shell, for example, the fragile shell is mounted on the surface of the inner wall of a bottom plate or a side plate of the electric energy meter shell.
When the fragile shell is subjected to external force attack, the fragile shell is extremely easy to break due to the large area and the thin plastic material. When the bottom plate or the side plate is broken, the fragile shell is broken synchronously. The hollow inner cavity of the fragile shell is filled with a conductive solution, such as sodium chloride solution, the conductive part is fixed in the fragile shell, when the conductive part is completely immersed in the sodium chloride solution, the conductive part is in an electrode conducting state, and a signal output part connected with the conductive part continuously sends a characteristic level signal to the MCU detection unit, so that the MCU detection unit is informed that the electricity stealing detection component is in an intact state and is not damaged. When the fragile shell is broken, sodium chloride solution in the fragile shell can quickly run off, the soaking environment of the conductive part can quickly disappear, the electrode is disconnected in a conducting state at the moment, and then the signal output part connected with the electrode changes a characteristic level signal sent to the MCU detection unit, namely a power-losing signal, so that the MCU detection unit is informed that the perfect state of the power-stealing detection component is damaged at the moment, and the MCU detection unit sends alarm information and records event information.
Through setting up breakable and be equipped with conductive solution's fragile casing and relevant conductive structure in the electric energy meter shell, can realize effectively detecting electric energy meter shell structural integrity to conductive solution cooperates the combination mode of conductive part still possess and receive temperature interference influence little, anti-vibration ability reinforce, do not need advantages such as extra power access, can be very big improvement to steal the warning dynamics of electric personnel, in order to reach the purpose of preventing fraudulent use of electricity.
Preferably, the conductive part comprises two conductive pole pieces and a bracket for fixing the conductive pole pieces, and the bracket is connected with the fragile shell.
Therefore, the bracket can be made of insulating plastic materials, is provided with a groove for fixing the accommodating shape, and can clamp and fix the conductive pole piece; the conductive electrode plates are made of metal materials, are set up by the support in a mode of two plates and are completely soaked in conductive solution in the fragile shell, the conductive solution can conduct the two conductive electrode plates to provide conditions for electron transfer, and at the moment, the channel state between the two conductive electrode plates enables the external impedance value detected by the MCU detection unit to be lower, so that the fragile shell is confirmed to be not damaged, and no electricity stealing behavior occurs.
Preferably, the side surface of the fragile shell is provided with an opening for accommodating penetration of the bracket, and the bracket is fixed in the inner cavity of the fragile shell through the opening.
Therefore, the fragile shell adopts an integrated molding design to ensure optimal air tightness and prevent the conductive solution therein from leaking; the opening is formed in the upper surface and the lower surface of the fragile shell, and the opening is formed in the side surface of the fragile shell so as to ensure the integrity of the upper surface and the lower surface of the fragile shell, and the mounting and the attaching are convenient. The length and the width of the opening are matched with the outline dimension of the bracket, and after the conductive solution is poured in from the opening, the bracket fixed with the conductive pole piece penetrates into the opening and is clamped and fixed, so that the installation is completed.
Preferably, a gasket for preventing leakage of the conductive solution is provided between the bracket and the opening.
Therefore, leakage of the conductive solution can possibly cause misjudgment of the MCU detection unit, and therefore when the bracket penetrates into the opening and is clamped and fixed, the gasket can be arranged to further increase the air tightness stability of the whole liquid anti-electricity-theft device. The gasket can be made of insulating rubber materials, and is sleeved on the support at first when being installed, and the rubber gasket is slightly deformed when being stressed when being inserted into the opening, so that the gasket is extruded into a gap between the support and the opening, and complete airtight sealing is realized.
As the preferable mode of the invention, the two conductive pole pieces are suspended in the hollow inner cavity of the fragile shell; and the two conductive pole pieces are arranged in parallel.
Therefore, in order to ensure that the two conductive pole pieces are completely and fully soaked in the conductive liquid, the contact between the conductive pole pieces and the inner wall of the fragile shell needs to be avoided, and therefore, when the two conductive pole pieces are fixed, the conductive pole pieces are suspended in the hollow inner cavity of the fragile shell, and the clamping positions of the support to the two conductive pole pieces are arranged in the middle. In order to ensure the stability of the conductive state between the two conductive pole pieces, and avoid the generation of an abnormal low-impedance signal due to cross touch after the conductive liquid is lost, the two conductive pole pieces are specially arranged in parallel, namely, the two conductive pole pieces are mutually parallel in the extending direction of the pole pieces.
Preferably, a colored substance is added to the conductive liquid.
Therefore, after the conductive liquid leaks and the MCU detection unit detects the abnormal high blocking signal, alarm information is generated, but in order to ensure that a user of the electric energy meter can more intuitively and clearly find the broken state of the electric energy meter, colored substances such as metal element ions or dye pigments which can be dissolved in the conductive liquid and do not influence the conductive performance are particularly added into the conductive liquid. After the fragile shell is destroyed, the conductive solution is exposed, and can visually help a user or other personnel of the electric energy meter to find the abnormal state of the electric energy meter due to the obvious color of the conductive solution.
Preferably, the signal output part comprises a plug connected with the MCU detection unit and a wire with one end connected with the plug and the other end connected with the conductive pole piece.
Therefore, the signal output part is mainly used for transmitting the conductive state information of the conductive pole piece to the MCU detection unit, the MCU detection unit is provided with a connection socket, and the plug is inserted into the socket to complete effective electric connection with the MCU detection unit; the plug is connected with the wire, and the wire other end penetrates into the threading hole of the bracket and is connected with the tail end of the conductive pole piece. By means of the length of the conductor, a flexible change of the arrangement position of the fragile housing can be achieved.
Preferably, the fragile shell is made of an insulating material; and an insulating layer is wrapped on the wire.
Therefore, the hollow inner cavity of the fragile shell is used for containing conductive liquid, so that the fragile shell is made of insulating materials, current error conduction is avoided, and the fragile shell can be made of hard plastic materials, has certain brittleness while insulating property, and can be easily broken when being affected by external force. The insulating layer is wrapped on the lead, so that the lead cannot be short-circuited when conductive liquid leaks, and a power-loss signal can be stably and accurately transmitted to the MCU detection unit.
Preferably, the fragile housing is secured to a plurality of inner sides of the power meter housing.
Therefore, potential electricity stealing directions and breaking and disassembling positions of electricity stealers are diversified, and in order to comprehensively exert the electricity stealing prevention effect of the device, the fragile shell can be installed on a plurality of inner surfaces of the electric energy meter shell according to the structural characteristics of the electric energy meter shell so as to achieve the effect of omnibearing protection.
Preferably, the fragile shell and the inner sides of the electric energy meter shell are adhered and fixed through waterproof glue.
Therefore, in order to ensure that the fragile shell matched with the fixed structure part of the electric energy meter shell can play a role smoothly when the fixed structure part is broken and detached, waterproof glue is needed to be used for bonding the fixed structure part and the fragile shell, so that an electricity stealer cannot bypass the fragile shell to contact the MCU detection unit.
In summary, the invention has the following beneficial effects:
1. Through setting up electric detection subassembly of stealing at electric energy meter fixed knot constructs part, installs fragile casing promptly on a plurality of internal surfaces of electric energy meter shell, can establish the anti-breaking alarm barrier through the breakable characteristics of fragile casing, can effectively detect electric energy meter fixed knot constructs part's vandalism to stealer, and sensitivity is high, simple structure is with low costs.
2. By adding colored substances into the conductive liquid, additional reminding capacity can be added on a visual system, and the recognition capacity of personnel on the safety state of the electric energy meter is improved.
Drawings
FIG. 1 is a schematic diagram of an electrical theft detection assembly in the present liquid anti-theft device;
FIG. 2 is a schematic diagram of the installation of the electricity larceny detection assembly and the housing of the electric energy meter in the present liquid electricity larceny prevention device;
FIG. 3 is a schematic view of a frangible enclosure in the present liquid anti-electricity-theft device;
fig. 4 is a schematic diagram of a conductive part in the liquid anti-electricity-theft device.
In the figure: the electric energy meter case 1, the electricity larceny detection assembly 2, the fragile shell 21, the conductive portion 22, the conductive pole piece 221, the bracket 222, the signal output portion 23, the plug 231, the wire 232 and the opening 3.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Any person may implement the present disclosure in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and for example, the terms "connected" may be removably connected or non-removably connected; may be directly connected or indirectly connected through an intermediate medium. Wherein, "fixedly connected" means that the relative positional relationship is unchanged after being connected with each other. It will be appreciated that when part a is fixedly connected to part C by part B, a change in the relative positional relationship due to deformation of parts a, B and C themselves is permitted. "rotationally coupled" means coupled to each other and capable of relative rotation after coupling. "slidingly coupled" means coupled to each other and capable of sliding relative to each other after being coupled. Wherein, the two parts are integrally formed to form an integrated structure, which means that in the process of forming one of the two parts, the one part is connected with the other part, and the two parts are not required to be connected together by a reworking (such as bonding, welding, buckling connection and screw connection) mode.
As shown in fig. 1 and 2, the electric energy meter housing 1 has a hollow accommodating cavity for accommodating hardware parts such as a PCB circuit board of the MCU detection unit, and an electricity theft detection assembly 2 is mounted on an inner bottom plate thereof. The electricity larceny detection assembly 2 is composed of a fragile shell 21 which is tiled on the inner bottom plate of the electric energy meter shell 1, a conductive part 22 which is connected in the fragile shell 21, and a signal output part 23 which is connected with the conductive part 22.
As can be seen from fig. 1 and 3, the frangible housing 21 is of a flat square configuration with a central cavity for containing an electrically conductive liquid, with a laterally disposed opening 3 through which a portion of the support 222 of the conductive portion 22 extends and is secured. Two square grooves are formed in the support 222, as shown in fig. 4, wherein each square groove is fixed with one conductive pole piece 221, and the two conductive pole pieces 221 are fixed in parallel. The tail of the bracket 222 is provided with a through hole for the lead 232 to penetrate, the lead 232 penetrates from the through hole and is connected with the conductive pole piece 221, the other end of the lead 232 is connected with the plug 231, and the plug 231 is inserted into an interface on the PCB of the MCU detection unit. The interface is an IO pin with an ADC function, in another embodiment, a detection circuit is further disposed between the conductive portion 22 and the MCU detection unit, a Res-ADC signal in the detection circuit is connected to the IO pin with the ADC function of the electric energy meter MCU, and the MCU detects that the external impedance value is lower, so that it can be confirmed that the electric energy meter housing 1 is not damaged.
In addition, a colored substance such as a metal element ion or a coloring pigment which is soluble in the conductive liquid and does not affect the conductive property is added to the conductive liquid. After the frangible housing 21 is broken, the conductive solution is exposed, which can visually assist a power meter user or other person in finding an abnormal state of the power meter due to its distinct color.
When the conductive liquid is installed, firstly, the conductive liquid is poured into the fragile shell 21 from the opening 3, the conductive liquid is stopped when the upper liquid level approaches the opening 3, then, the support 222 provided with the conductive pole piece 221 is inserted from the opening 3, and the joint of the support 222 and the opening 3 is sealed by extrusion through a gasket, so that the conductive liquid is prevented from leaking when the fragile shell 21 is horizontally arranged. And then, the fragile shell 21 is adhered to the mounting position of the inner side wall of the electric energy meter shell 1 by using waterproof glue, the wires 232 are reasonably arranged, and the plug 231 is inserted into the interface position on the PCB of the MCU detection unit, so that the electric connection is completed.
When the fragile shell 21 is not damaged during operation, both the conductive pole pieces 221 are completely immersed in the conductive liquid, and at this time, the MCU detection unit continuously receives a low-impedance signal to indicate that no electricity stealing behavior occurs; when the fixed structure part of the electric energy meter shell 1 is damaged by a thief, the fragile shell 21 is damaged together, then the colored conductive liquid is quickly leaked, so that the two conductive pole pieces 221 are separated from a soaking state, the two conductive pole pieces are disconnected from each other, the MCU detection unit detects a high-impedance signal, and alarm information is generated according to the signal. Thereby achieving the purpose of avoiding fraudulent use of electricity.
The foregoing description is merely illustrative of the present application, and the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and should be covered by the scope of the present application; embodiments of the application and features of the embodiments may be combined with each other without conflict. The structural member materials, sizes, shapes, etc. mentioned in the embodiments of the present application are schematically described, and are not strictly defined or absolutely defined. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. The liquid electricity larceny prevention device suitable for the electric energy meter comprises an electric energy meter shell (1) and an MCU detection unit arranged in the electric energy meter shell (1), and is characterized by further comprising an electricity larceny detection assembly (2); the electricity larceny detection assembly (2) comprises a fragile shell (21) arranged inside the electric energy meter shell (1), a conductive part (22) fixed in the fragile shell (21) and a signal output part (23) electrically connected with the conductive part (22); the fragile shell (21) is filled with conductive liquid, and the conductive part (22) is soaked in the conductive liquid to form a conductive path; the signal output part (23) is electrically connected with the MCU detection unit, and when the conductive liquid leaks, the MCU detection unit detects a power-off signal of the conductive part (22).
2. A liquid anti-electricity theft device for electric energy meters according to claim 1, characterized in that the conductive part (22) comprises two conductive pole pieces (221) and a bracket (222) for fixing the conductive pole pieces (221), the bracket (222) being connected with the fragile housing (21).
3. A liquid anti-electricity theft device for electric energy meters according to claim 2, characterized in that the side of the fragile housing (21) is provided with an opening (3) for receiving the penetration of the bracket (222), the bracket (222) being fixed in the internal cavity of the fragile housing (21) through the opening (3).
4. A liquid anti-electricity theft device for electric energy meters according to claim 3, characterized in that a gasket for preventing leakage of the conductive solution is provided between the holder (222) and the opening (3).
5. A liquid anti-theft device for electric energy meter according to claim 2, characterized in that two of said conductive pole pieces (221) are suspended in the hollow cavity of said frangible casing (21); and two conductive pole pieces (221) are arranged in parallel.
6. A liquid anti-theft device for electric energy meter according to any one of claims 1-5, characterized in that colored substances are added to the conductive liquid.
7. The liquid anti-electricity-theft device for electric energy meter according to claim 5, characterized in that the signal output part (23) comprises a plug (231) connected with the MCU detection unit and a wire (232) with one end connected with the plug (231) and the other end connected with the conductive pole piece (221).
8. A liquid anti-electricity theft device for electric energy meters according to claim 7, characterized in that the fragile casing (21) is an insulating material; the wire (232) is wrapped with an insulating layer.
9. A liquid anti-electricity theft device for electric energy meters according to claim 1, characterized in that the fragile shell (21) is fixed on a plurality of inner sides of the electric energy meter housing (1).
10. A liquid anti-electricity theft device for electric energy meter according to claim 1, characterized in that the fragile shell (21) is fixed to the inner sides of the electric energy meter housing (1) by means of waterproof glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105002.0A CN118130861A (en) | 2024-01-25 | 2024-01-25 | Liquid electricity larceny prevention device suitable for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410105002.0A CN118130861A (en) | 2024-01-25 | 2024-01-25 | Liquid electricity larceny prevention device suitable for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118130861A true CN118130861A (en) | 2024-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410105002.0A Pending CN118130861A (en) | 2024-01-25 | 2024-01-25 | Liquid electricity larceny prevention device suitable for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118130861A (en) |
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2024
- 2024-01-25 CN CN202410105002.0A patent/CN118130861A/en active Pending
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