CN205809123U - A kind of anti-interference metering ammeter - Google Patents

Abstract

The utility model discloses an anti-interference metering electric meter. The wave-absorbing layer material in the electric meter box adopts a composite sandwich sandwich structure; the structure includes a first epoxy resin layer, a second epoxy resin layer and a The polyurethane-based electromagnetic wave-absorbing layer between the epoxy resin layer and the second epoxy resin layer, the polyurethane-based electromagnetic wave-absorbing layer includes a first wave-absorbing layer, an intermediate layer and a second wave-absorbing layer. The epoxy resin layer can not only realize electrical insulation between the polyurethane electromagnetic wave-absorbing layer and other circuit devices, but also support and fix the electromagnetic wave-absorbing layer. The three-layer wave-absorbing layer can select wave-absorbing materials in a targeted manner according to the frequency band and intensity information of the jammer. The circuit device in the utility model includes a radiation sensor, an alarm, a controller and the like. This set of circuit system can determine whether it is stealing electricity according to environmental changes, and can send out alarm information and record electricity stealing information, so as to effectively identify the electricity thief and facilitate evidence collection and analysis.

Description

An anti-jamming meter

technical field

The utility model relates to the field of power metering equipment, in particular to an anti-interference metering meter.

Background technique

As one of the important energy sources, electric energy has been widely used in various fields of social production and all aspects of social life. The construction of modernization, the development of the national economy and the improvement of the quality of life of the people are closely related to the construction and development of electric power. However, with the gradual increase of electricity prices, the proportion of electricity costs in life and production is also increasing. Driven by huge economic interests, more and more illegal users are extending their hands to electricity meters. It is getting higher and higher, and all the on-site requirements require the use of standardized equipment. The metering boxes currently used in marketing, except for the special outdoor metering boxes, are all plastic meter boxes, and some of the original metal meter boxes have also been changed to plastic meter boxes. The disadvantage of the metal meter box is that it is impossible to directly view the metering equipment. The advantage is that the metal meter box is a conductor and can form a shield to resist electromagnetic interference; after replacing it with a plastic meter box, it is convenient to observe the condition of the meter. Customers and workers troubleshoot, but are not immune to electromagnetic interference. This has led to the emergence of various new high-tech means of stealing electricity on the spot, which disrupts the normal measurement of the electric energy meter by applying super strong electromagnetic interference to the electric meter. Therefore, it is necessary to study the anti-electromagnetic interference of the metering box.

The existing electric energy meter adopts an ordinary plastic watch case, which does not have anti-electromagnetic interference characteristics. At present, the use of high-frequency radiation jammers to conduct electromagnetic interference and steal electricity on electric energy meters has spread. It uses the high-power wireless signal of the power-stealing device to interfere with the CPU of the meter, so that the meter cannot work normally, does not count or under-meters the electricity, and can restore the meter measurement at any time. This method of stealing electricity has a short operating time and is very concealed. The purpose of interfering with the meter can be achieved by transmitting a high-power signal outside the meter box, without changing any part of the power equipment and metering device, and without leaving any traces on the spot, so that even if the electricity stealing inspector finds the electricity stealing in a short time, It is not qualitative either, only the electric energy meter can be replaced, and it is very difficult to replenish the electric energy. Some power supply departments have invested a lot of money to install a remote monitoring system in order to fully monitor users. However, after the application, it was found that the above-mentioned method of stealing electricity caused the meter to measure less electricity, and the system could not judge whether it was a load reduction or electricity theft. Even if it can be judged that it is stealing electricity, go to the user's site to check immediately, because of the short operation time (only a few seconds) of stealing electricity, when the inspectors arrive, they still cannot find any clues of electricity theft. Since there is no effective prevention method for this high-tech intelligent electricity stealing power supply system, it has resulted in rapid expansion in some places, resulting in increased line loss and huge losses. Therefore, it is imperative to use anti-electromagnetic interference materials to design anti-interference electric energy meter boxes to ensure the accuracy of measurement.

Utility model content

The purpose of the utility model is to provide an anti-interference metering meter box. The scheme realizes the anti-jamming ability of the metering meter by designing the wave-absorbing layer structure and circuit device, realizes the deterrence of electricity stealers, and records evidence.

The technical scheme of the function of the anti-jamming meter box of the utility model is as follows:

The utility model provides an anti-interference metering meter box, which includes a shielding case and a circuit system arranged in the shielding case, and the shielding case is a composite sandwich sandwich structure;

The composite sandwich sandwich wave-absorbing layer structure includes a first epoxy resin layer, a second epoxy resin layer, and a polyurethane-based electromagnetic wave-absorbing layer arranged between the first epoxy resin layer and the second epoxy resin layer.

Further, the polyurethane-based electromagnetic wave-absorbing layer includes a first wave-absorbing layer, an intermediate layer and a second wave-absorbing layer arranged in sequence.

Further, the polyurethane-based electromagnetic wave-absorbing layer selects wave-absorbing materials in a targeted manner according to the frequency band and intensity information of the jammer.

Further, the first wave-absorbing layer is arranged on the side of the first epoxy resin layer; the second wave-absorbing layer is arranged on the side of the second epoxy resin layer; the intermediate layer is arranged on the first wave-absorbing layer and the Between the second wave-absorbing layers; the middle layer is a metal fiber shielding layer.

Further, a transparent window is provided on the shielding shell; the transparent window is made of a transparent conductive high molecular polymer with electromagnetic wave shielding performance and a metal shielding net embedded in the high molecular polymer.

Further, the outer layer of the transparent window is coated with a transparent insulating layer.

Further, the circuit system includes a warning alarm module, a power supply module, a control module, a communication module, an electrical parameter acquisition module and a touch input module;

The power supply module is respectively connected with the communication module, the electric parameter collection module, the control module and the touch input module; it supplies power for the entire electric meter; the control module is respectively connected with the communication module, the electric parameter collection module and the touch input module; the communication module , used to realize the control module communication;

The electrical parameter acquisition module is used to collect power signals; the control module is used to receive power signals and perform data analysis; the touch input module is used to input control signals;

Further, the warning alarm module includes an electromagnetic radiation sensor, an alarm, a processor, a sounding device, and a recorder, wherein the radiation sensor is placed outside the meter box; the radiation sensor is used to obtain the radiation information of the interferer, and the processor uses To receive the radiation information and judge whether the external interference radiation exceeds the set value, if it exceeds the set value, continue to judge whether the current state is a stealing behavior, and will generate an alarm message for the stealing behavior; the sounding device receives the output of the processor Sound warning after the alarm information; the recorder is connected with the processor for recording electricity theft information.

Owing to adopting above-mentioned technical scheme, the utility model has following advantage:

The shielding device of the anti-interference metering meter box provided by the utility model adopts a composite sandwich sandwich structure. According to the frequency band and strength information of the jammer, it is proposed to select different types of wave-absorbing materials and polyurethane polymers to compound the electromagnetic wave shielding layer, and it can be arbitrarily combination. In order to obtain better absorption and shielding effects, the utility model can also use silver-plated metal fibers with superior shielding properties to form metal fiber shielding nets in polymers, and the metal fiber shielding nets are solidified between the insulating plastic and the wave-absorbing layer .

According to actual needs, such as power companies need to read the meter regularly or to avoid repeated opening of the meter box when reading the meter, the anti-interference shielding box is also designed with a transparent window. The main matrix material of the transparent window is a transparent conductive high molecular polymer with electromagnetic wave shielding performance, and the metal mesh is embedded in the high molecular material. Because the metal wire used in the metal shielding mesh is very thin, it has little effect on the transparency and ensures that the meter value can be read normally. In order to meet the requirements of insulation, a transparent insulating layer is also coated on the outer layer of the transparent window to ensure safety.

The anti-interference shielded meter box is also equipped with a warning alarm device, which can obtain the radiation information of the jammer through the radiation sensor, and judge whether the external interference radiation exceeds the set value. If it exceeds the set value, continue to judge whether the current state is stealing electricity , will generate an alarm message for electricity theft. The sounding device sounds a warning after receiving the alarm information, so as to deter the power stealer. At the same time, the recorder records electricity stealing information, which is convenient for evidence collection and analysis.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained by the following description and claims.

Description of drawings

The accompanying drawings of the utility model are as follows.

Fig. 1 is the structural representation of the electric meter box of the present utility model.

Fig. 2 is a structural schematic diagram of the shielding device of the meter box of the present invention.

In the figure: 1 is the shell, 2 is the composite layer; 21 is the first epoxy resin layer, 22 is the second epoxy resin layer, 23 is the polyurethane-based electromagnetic wave-absorbing layer; 231 is the first wave-absorbing layer, 232 is The middle layer, 233 is the second absorbing layer; 3 is the warning alarm device; 4 is the electric meter.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Example

As shown in the figure, the anti-interference metering meter box provided by this embodiment includes a housing 1 and a metering device arranged inside the housing; the housing is a shielding device; Composite layer 2 of disturbing information sent to metering devices;

The composite layer comprises a first epoxy resin layer 21, a second epoxy resin layer 22, and a polyurethane-based electromagnetic wave-absorbing layer 23 arranged between the first epoxy resin layer and the second epoxy resin layer, the polyurethane The base electromagnetic absorbing layer includes a first absorbing layer 231, an intermediate layer 232 and a second absorbing layer 233;

The first absorbing layer is arranged on one side of the first epoxy resin layer;

The second absorbing layer is arranged on one side of the second epoxy resin layer;

The intermediate layer is arranged between the first wave-absorbing layer and the second wave-absorbing layer;

The middle layer is a metal fiber shielding layer.

The metal fiber shielding layer is a metal fiber shielding net made of metal nanowire material.

The metal nanowires can be ferromagnetic nanowires, such as iron, cobalt, nickel and alloys thereof. At the same time, in order to increase the shielding effect, silver plating can be performed on the surface of the ferromagnetic metal nanowire.

The first wave-absorbing layer and the second wave-absorbing layer are wave-absorbing layers made of dielectric wave-absorbing materials, such as silicon carbide, graphene, barium titanate, and the like.

The housing is provided with a transparent window; the transparent window is made of a transparent conductive high molecular polymer with electromagnetic wave shielding performance and a metal shielding net embedded in the high molecular polymer.

The outer layer of the transparent window is coated with a transparent insulating layer.

Described electric meter box has warning alarm device 3, and described warning alarm device comprises radiation sensor, processor, sounding equipment and recorder;

The radiation sensor is used to obtain the radiation information of the interferer outside the meter 4, and the processor is used to receive the radiation information and judge whether the external interference radiation exceeds a set value, and if it exceeds the set value, continue to judge whether the current state is For stealing electricity, an alarm message will be generated for the electricity stealing behavior;

The sounding device emits a sound after receiving the alarm information output by the processor;

The recorder is connected with the processor to record electricity stealing information.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (8)

1. An anti-interference metering meter box is characterized in that: it comprises a shielding case and a circuit system arranged with the shielding case, and the shielding case is a composite sandwich sandwich structure; The composite sandwich sandwich wave-absorbing layer structure includes a first epoxy resin layer, a second epoxy resin layer, and a polyurethane-based electromagnetic wave-absorbing layer arranged between the first epoxy resin layer and the second epoxy resin layer. 2. The anti-interference metering meter box according to claim 1, characterized in that: the polyurethane-based electromagnetic wave-absorbing layer comprises a first wave-absorbing layer, an intermediate layer and a second wave-absorbing layer arranged in sequence. 3. The anti-interference metering meter box according to claim 1, characterized in that: the polyurethane-based electromagnetic wave-absorbing layer selects wave-absorbing materials in a targeted manner according to the frequency band and intensity information of the jammer. 4. The anti-interference metering meter box according to claim 2, characterized in that: the first wave-absorbing layer is arranged on the side of the first epoxy resin layer; the second wave-absorbing layer is arranged on the second epoxy resin layer One side of the resin layer; the middle layer is arranged between the first wave-absorbing layer and the second wave-absorbing layer; the middle layer is a metal fiber shielding layer. 5. The anti-interference metering meter box according to claim 1, characterized in that: the shielding shell is provided with a transparent window; the transparent window adopts a transparent conductive high molecular polymer with electromagnetic wave shielding performance and is embedded in a high Fabrication of metal shielding mesh in molecular polymer. 6. The anti-interference metering meter box according to claim 5, characterized in that: the outer layer of the transparent window is coated with a transparent insulating layer. 7. The anti-interference metering meter box according to claim 1, wherein the circuit system includes a warning alarm module, a power supply module, a control module, a communication module, an electric parameter acquisition module and a touch input module; The power supply module is respectively connected with the communication module, the electric parameter collection module, the control module and the touch input module; it supplies power for the entire electric meter; the control module is respectively connected with the communication module, the electric parameter collection module and the touch input module; the communication module , used to realize the control module communication; The electrical parameter collection module is used to collect power signals; the control module is used to receive power signals and perform data analysis; the touch input module is used to input control signals. 8. The anti-interference metering meter box as claimed in claim 7, wherein: the warning alarm module includes an electromagnetic radiation sensor, an alarm, a processor, a sounding device and a recorder, wherein the radiation sensor is placed outside the meter box; The radiation sensor is used to obtain the radiation information of the jammer, and the processor is used to receive the radiation information and determine whether the external interference radiation exceeds a set value, and if it exceeds the set value, continue to determine whether the current state is a stealing behavior, Alarm information will be generated for electricity stealing behavior; the sounding device will sound an alarm after receiving the alarm information output by the processor; the recorder is connected with the processor for recording electricity stealing information.