CN109444535B - Electric energy meter with remote control electromagnetic charging seal - Google Patents
Electric energy meter with remote control electromagnetic charging seal Download PDFInfo
- Publication number
- CN109444535B CN109444535B CN201811484504.XA CN201811484504A CN109444535B CN 109444535 B CN109444535 B CN 109444535B CN 201811484504 A CN201811484504 A CN 201811484504A CN 109444535 B CN109444535 B CN 109444535B
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- electromagnetic
- electric energy
- energy meter
- nut
- seal
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
Abstract
The invention provides an electric energy meter with a remote identification charging seal. The electromagnetic lock device is arranged at the charging seal part of the electric energy meter and comprises an electromagnetic nut and a bolt matched with the electromagnetic nut, the electromagnetic nut is arranged at the inner side of a Fei Fengyin through hole of the electric energy meter, and the bolt is screwed into the electromagnetic nut from the outer side of the charging seal through hole to finish the seal of the charging electric energy meter. The electromagnetic coil is connected with a remote unlocking device outside the nut through a lead, and the power on or power off of the electromagnetic coil is controlled through the remote unlocking device, so that the charging seal of the electric energy meter is controlled to be opened or closed. The remote seal and unseal functions are realized, and only the remote server authorization is used for unsealing; has the functions of on-site and remote alarm.
Description
Technical Field
The invention relates to the technical field of charging electric energy meters, in particular to an electric energy meter with a remote control electromagnetic charging seal.
Background
The charging seal of the electric energy meter still stays on the level of the common lead seal at present, which is a lead block device for packaging the wiring port of the meter so as to avoid being opened by other personnel. Such seal surfaces are printed with codes for operator inquiry and inspection.
At present, the electric power billing seal implements a signature system of a taker of the billing seal, who installs the seal after the seal is taken, who discards the seal, and the seal is installed on a work record book, and obviously, the management mode is low-efficiency and behind, and a great deal of manpower and time cost are required to be used when a certain seal is to be inquired.
The lagging equipment also buries the voltaic pen for the electricity stealing behavior, for example, the means of electricity stealing is that the metering device is put on hands and feet by destroying the seal for charging and replaced by a new seal, so that whether the electricity stealing behavior exists or not is obviously unreliable only from the integrity of the appearance of the seal.
Chinese patent publication No. CN 206906449U proposes an intelligent seal for an electric meter, which uses a seal wire, and determines whether the seal wire is broken by a circuit to determine whether the seal is opened. Such seals have only a seal alarm function, but no remote seal and unseal functions.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides the electric energy meter with the remote control electromagnetic charging seal, which realizes the remote seal and unseal functions and can only unseal after the authorization of a remote server; has the functions of on-site and remote alarm.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
an electric energy meter with a remote control electromagnetic charging seal comprises an electric energy meter, wherein the charging seal of the electric energy meter comprises an electromagnetic lock device and a remote unlocking device.
The electromagnetic lock device comprises an electromagnetic nut and a bolt, wherein the electromagnetic nut is fixedly connected in the electric energy meter shell and is positioned below the charging seal through hole, and the bolt passes through the charging seal through hole and is screwed into the electromagnetic nut to complete the seal of the charging electric energy meter;
an electromagnetic coil is arranged in the electromagnetic nut, and is connected with a remote unlocking device outside the nut through a lead, and the power on or power off of the electromagnetic coil is controlled through the remote unlocking device, so that the charging seal of the electric energy meter is controlled to be opened or closed;
the remote unlocking device is located inside the electric energy meter and is powered by a 220V alternating current power supply terminal in the electric energy meter, the remote unlocking device comprises a main control MCU chip, a power management circuit, a ROLA chip and a triode power output circuit, wherein the power management circuit, the ROLA chip and the triode power output circuit are connected with a port of the main control MCU chip, the output end of the triode power output circuit is connected with an electromagnetic coil in an electromagnetic nut through a terminal, the main control MCU chip is connected with a ROLA wireless network through the ROLA chip, and the remote opening and closing of a charging seal and the inquiry of a seal state are realized through data interaction of the ROLA wireless network and a remote server.
The electromagnetic nut is an electromagnet with a customized nut shape, and consists of a metal shell, an electromagnetic iron core in the shell and an electromagnetic coil wound on the electromagnetic iron core, wherein the inside of the shell is filled with epoxy resin, and an internal thread is arranged in the center of the electromagnet.
The power management circuit comprises a power management chip RH5RL36AA, one input end of a power supply of the power management chip RH5RL36AA is connected with a 220V alternating current power supply in the electric energy meter, and the output end of the power management chip RH5RL36AA outputs a direct current power supply AVCC/DVCC to supply power for the main control MCU chip and the ROLA chip; the other input end of the power management circuit RH5RL36AA is also connected with a lithium battery, and the lithium battery is used as a standby power supply when the electric energy meter is powered off.
The remote unlocking device also comprises a direct current transducer and an alarm circuit which are connected to the port of the main control MCU chip, wherein the input end of the direct current transducer is connected with the electromagnetic coil, and the output end of the direct current transducer is connected with the main control MCU chip; the alarm circuit is an alarm bell driven by a triode.
The master control MCU chip is an MSP430F413 singlechip chip.
Compared with the prior art, the invention has the beneficial effects that:
1. the nut structure with electromagnetic performance is designed, when in seal, an operator obtains permission of a remote server, the electromagnetic nut is electrified by the remote unlocking device to generate magnetic force, the operator only needs to insert the bolt into the through hole, the electromagnetic performance of the electromagnet is utilized to easily screw the bolt into the magnetic nut, and in the condition that the magnetism of the electromagnetic nut is not disappeared, the bolt cannot be screwed out, so that electricity stealing behavior can be prevented; when the remote server is in unsealing, an operator obtains permission of the remote server, the electromagnetic nut is powered off by the remote unlocking device to eliminate magnetic force, and the operator can use a tool to unscrew the bolt from the through hole;
2. the remote unlocking device has the LORA remote data transmission function, and LORA communication is also common communication in the intelligent electric meter, and the remote unlocking device and the intelligent electric meter are compatible with each other and can realize interconnection;
3. the MCU in the remote unlocking device can also store seal codes of the electric energy meter, one meter corresponds to one seal code, and the seal identification function of the electric energy meter is realized;
4. the remote unlocking device has the functions of on-site and remote alarm, and by detecting the current of the electromagnetic coil in the electromagnetic nut, when the bolt is inserted into or screwed out of the nut, the current of the electromagnetic coil is necessarily changed, and when the singlechip detects the change of the current, if the current is not in the authorized unlocking or sealing state of the remote server, an alarm is sent.
5. The remote unlocking device utilizes power supply in the electric energy meter, and meanwhile, the remote unlocking device is additionally provided with a lithium battery as a standby power supply to prevent the electromagnetic coil from losing efficacy, and if the remote unlocking device has a power failure, the remote server immediately dispatches a person to check when detecting the communication failure, so that electricity stealing behavior is prevented.
Drawings
FIG. 1 is a block diagram of an electrical energy meter of the present invention;
FIG. 2 is a cross-sectional view of an electrical energy meter of the present invention;
FIG. 3 is a cross-sectional view of the electromagnetic nut of the present invention;
FIG. 4 is an internal structural view of the electromagnetic nut of the present invention;
FIG. 5 is a circuit board block diagram of the remote unlocking device of the present invention;
FIG. 6 is a circuit diagram of a master MCU of an embodiment of a remote unlocking device of the present invention;
FIG. 7 is a circuit diagram of a LORA wireless chip of an embodiment of a remote unlocking device of the present invention;
FIG. 8 is a schematic diagram of a triode power output circuit of an embodiment of the remote unlocking device of the present invention;
FIG. 9 is a power management circuit diagram of an embodiment of a remote unlocking device of the present invention;
fig. 10 is an alarm circuit diagram of an embodiment of a remote unlocking device of the present invention.
In the figure, a 1-electric energy meter Fei Fengyin through hole 2-electric energy meter upper cover 3-electric energy meter shell 4-bolt 5-electromagnetic nut 6-remote unlocking device 7-screw thread 8-electromagnetic coil 9-electromagnetic nut shell 10-iron core 11-epoxy resin.
Detailed Description
The following detailed description of the embodiments of the invention is provided with reference to the accompanying drawings.
As shown in fig. 1-5, an electric energy meter with a remote control electromagnetic charging seal, wherein the charging seal of the electric energy meter comprises an electromagnetic lock device and a remote unlocking device 6.
As shown in fig. 1-2, the electromagnetic lock device is installed at the charging seal through hole 1 of the electric energy meter and comprises an electromagnetic nut 5 and a bolt 4 matched with the electromagnetic nut, the electromagnetic nut 5 is installed in the electric energy meter shell 3 and is positioned at the inner side of the charging seal through hole 1, and the bolt 4 is screwed into the electromagnetic nut 5 from the outer side of the charging seal through hole 1 to finish the seal of the charging electric energy meter.
As shown in fig. 2-3, an electromagnetic coil 8 is wound inside the electromagnetic nut 5, the electromagnetic coil 8 is connected with a remote unlocking device 6 outside the nut 3 through a lead, and the power on or power off of the electromagnetic coil 8 is controlled through the remote unlocking device 6, so that the charging seal of the electric energy meter is controlled to be opened or closed.
As shown in fig. 4, the electromagnetic nut 5 is an electromagnet with a nut shape customized by an electromagnet manufacturer, and is composed of a metal shell 9, an electromagnetic iron core 10 in the shell 9 and an electromagnetic coil 8 wound on the electromagnetic iron core 10, wherein the shell is filled with epoxy resin 11, and a thread 7 is processed at the center of the shell 9.
As shown in fig. 2 and 5, the remote unlocking device 6 is located inside the electric energy meter and is powered by a 220V ac power terminal in the meter, the remote unlocking device 6 comprises a main control MCU chip, a power management circuit connected with a port of the main control MCU chip, a ROLA chip and a triode power output circuit, and an output end of the triode power output circuit is connected with an electromagnetic coil in the nut through a terminal. The remote unlocking device also comprises an alarm circuit connected to the port of the main control MCU chip.
As shown in FIG. 6, the master MCU chip is an MSP430F413 single chip microcomputer chip, which is connected with an alarm circuit through a P2.1 port, a direct current transmitter through a P2.0 port, a triode power output circuit through a P6.4 port, and ROLA chip circuits through P1.0, P1.1, P2.5, P6.0-P6.3 and P6.7.
As shown in fig. 7, the ROLA chip adopts an LSD2F717N20 small-sized LORA patch chip which is connected with the singlechip through a port and also connected with the RF-ANT antenna through an RFO port.
The main control MCU chip is connected with the ROLA wireless network through the ROLA chip, and realizes remote opening and closing of the charging seal and seal state inquiry through data interaction between the ROLA wireless network and a remote server.
As shown in fig. 8, in the triode power output circuit, a P6.4 port signal of the singlechip MSP430F413 is connected with a terminal of the electromagnet coil through a triode Q6.
As shown in fig. 9, the POWER management circuit includes a POWER management chip RH5RL36AA, a POWER input terminal POWER port of which is connected to a 220V ac POWER supply in the electric energy meter, and an output terminal of which outputs a dc POWER supply AVCC/DVCC to supply POWER to the main control MCU chip and the ROla chip. In addition, RH5RL36AA of the power management circuit is also connected with a lithium battery through a LiBatt port and is used as a standby power supply when the electric energy meter is powered off, so that the seal is prevented from being opened when the electric energy meter is powered off. If all the two paths of power supply are in power failure, the main control MCU chip is powered off, the remote server finds out the communication data fault, the seal of the electric energy meter is invalid, and the maintenance personnel immediately check and maintain the electric energy meter on site.
As shown in fig. 10, the alarm circuit is an alarm BELL driven by a transistor Q50. The alarm circuit receives an instruction of a P2.1 port of the singlechip MSP430F413, the input end of the direct current transmitter is connected with the electromagnetic coil 8, when the singlechip detects that the current of the electromagnetic coil 8 changes, the electromagnetic coil 8 is unlocked, if the unlocking behavior is not permitted by the remote server, the alarm BELL BELL of the alarm circuit alarms, and meanwhile, the singlechip MSP430F413 sends an alarm signal to the remote server through the ROLA chip, and an maintainer is immediately dispatched to view and maintain on site.
The above examples are implemented on the premise of the technical scheme of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the above examples. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (3)
1. The electric energy meter with the remote control electromagnetic charging seal comprises an electric energy meter, and is characterized in that the charging seal of the electric energy meter comprises an electromagnetic lock device and a remote unlocking device;
the electromagnetic lock device comprises an electromagnetic nut and a bolt, wherein the electromagnetic nut is fixedly connected in the electric energy meter shell and is positioned below the charging seal through hole, and the bolt passes through the charging seal through hole and is screwed into the electromagnetic nut to complete the seal of the charging electric energy meter;
an electromagnetic coil is arranged in the electromagnetic nut, and is connected with a remote unlocking device outside the nut through a lead, and the power on or power off of the electromagnetic coil is controlled through the remote unlocking device, so that the charging seal of the electric energy meter is controlled to be opened or closed;
the remote unlocking device is positioned in the electric energy meter and is powered by a 220V alternating current power supply terminal in the electric energy meter, and comprises a main control MCU chip, a power management circuit, a ROLA chip and a triode power output circuit, wherein the power management circuit, the ROLA chip and the triode power output circuit are connected with a port of the main control MCU chip;
the electromagnetic nut is an electromagnet with a customized nut shape and consists of a metal shell, an electromagnetic iron core in the shell and an electromagnetic coil wound on the electromagnetic iron core, wherein the shell is filled with epoxy resin, and the center of the electromagnet is provided with an internal thread;
the remote unlocking device also comprises a direct current transducer and an alarm circuit which are connected to the port of the main control MCU chip, wherein the input end of the direct current transducer is connected with the electromagnetic coil, and the output end of the direct current transducer is connected with the main control MCU chip; the alarm circuit is an alarm bell driven by a triode.
2. The electric energy meter with the remote control electromagnetic charging seal according to claim 1, wherein the power management circuit comprises a power management chip RH5RL36AA, one input end of the power management chip RH5RL36AA is connected with a 220V alternating current power supply in the electric energy meter, and the output end outputs a direct current power supply AVCC/DVCC to supply power for a main control MCU chip and a ROLA chip; the other input end of the power management circuit is also connected with a lithium battery which is used as a standby power supply when the electric energy meter is powered off.
3. The electric energy meter with the remote control electromagnetic charging seal according to claim 1, wherein the main control MCU chip is an MSP430F413 single chip microcomputer chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484504.XA CN109444535B (en) | 2018-12-06 | 2018-12-06 | Electric energy meter with remote control electromagnetic charging seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484504.XA CN109444535B (en) | 2018-12-06 | 2018-12-06 | Electric energy meter with remote control electromagnetic charging seal |
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| Publication Number | Publication Date |
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| CN109444535A CN109444535A (en) | 2019-03-08 |
| CN109444535B true CN109444535B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811484504.XA Active CN109444535B (en) | 2018-12-06 | 2018-12-06 | Electric energy meter with remote control electromagnetic charging seal |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115951123B (en) * | 2023-02-28 | 2023-06-30 | 国网山东省电力公司营销服务中心(计量中心) | Electric energy metering method and system based on wireless communication |
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