CN205067560U - Intelligent ammeter box - Google Patents

Abstract

The utility model discloses an intelligent ammeter box, including last box and lower box, go up the box for measuring the part inlet wire binding post, fuse, electric energy epitope and control module, electric energy epitope installation electric energy meter, down the box be the terminal block part, including air switch and the user binding post that inclines that is qualified for the next round of competitions, electric energy meter and the user side binding post that is qualified for the next round of competitions is connected respectively at air switch's both ends. The utility model discloses simple structure is through reserving binding post to the electric energy meter for the bus wiring of whole table incasement is more normal, has avoided the ununified problem of the on -the -spot wiring of the on -the -spot constructor of construction brigade.

Description

Smart Meter Box

technical field

The invention belongs to the technical field of electric power marketing equipment, and in particular relates to a smart meter box for preventing electricity theft.

Background technique

In recent years, with the continuous improvement of people's living standards, household electrical equipment has continued to increase, and various power consumption requirements have increased the load capacity of the circuit. Circuit overload operation, short circuit, etc. have occurred from time to time, and fires caused by electrical equipment have also occurred from time to time. have happened. Therefore, it is necessary to monitor electricity consumption in real time, realize pre-alarm for electricity overload, and eliminate potential safety hazards. And when there is a leakage in the line, it can also prompt the user through voice alarm and other means at the first time, if it is unsafe to use electricity, find the relevant personnel to repair it as soon as possible.

In addition, electricity stealing has always been a major problem for power supply enterprises. Electricity stealing not only caused serious economic losses to the country and the collective, but also restricted the improvement of economic benefits. With the rapid development of science and technology, the way of stealing electricity and the technology of stealing electricity are becoming more and more sophisticated. It is difficult for the traditional anti-stealing methods to achieve the desired effect. direction development. Like this, a kind of novel intelligent anti-theft electric meter box arises at the historic moment. The device has the advantages of low cost, reliable operation, etc., and will play an increasingly important role in the field of electricity theft prevention.

Contents of the invention

The technical problem to be solved by the utility model is to provide an intelligent electric meter box integrating electric energy comparison, electric leakage monitoring, meter box door state monitoring and important node temperature monitoring.

The utility model solves the above technical problems through the following technical solutions:

The smart meter box includes an upper box and a lower box, and is characterized in that,

The upper box is a metering part, including incoming wiring terminals, fuses, electric energy meters and a control module; the electric energy meters are installed with electric energy meters;

The control module includes a current sensor, a power integration module, a comparison module, a zero-sequence transformer, a micro-processing module, an event sequence event recording SOE module, a system power supply module and a communication module;

The current sensor monitors the current and obtains current data;

The electricity integration module integrates the received current data sent by the current sensor and the voltage data collected by the electric energy meter to obtain the total electric quantity data of the incoming line of the smart meter box of the utility model;

The comparison module compares the total electric quantity data of the incoming line with the electric energy data collected by the electric energy meter, and when the difference reaches a set threshold, an electric stealing alarm signal is sent;

The zero-sequence transformer, when generating a zero-sequence ground current, obtains a leakage current signal, and records a leakage current overrun event record; sends a leakage current signal to the air switch in the lower box, so that the air switch performs a separation and tripping mechanism action , for power-off protection;

After installing a current sensor and a zero-sequence transformer on the incoming line terminal, it is connected to the electric energy meter through a fuse;

The micro-processing module receives and records the electricity theft alarm signal sent by the comparison module, and sends an alarm record to the event sequence event record SOE module; receives and records the leakage current data sent by the zero sequence transformer, and sends it to the event sequence event record SOE module Leakage current overrun event record; receive and record the electric energy data collected by the electric energy meter;

The event sequence event record SOE module matches the alarm record, the leakage current overrun event record, the electric energy data with the time scale, and stores it as an event record;

Described communication module, send the event sequence event record SOE module storage event record to meter reading equipment by RS-485 mode;

The system power supply module is connected to a 220V power supply to obtain the DC voltage required by the control module through a transformer rectification circuit, and supplies power to the control module;

The lower box body is a user wiring part, including an air switch and a user outlet terminal. Both ends of the air switch are respectively connected to an electric energy meter and a user outlet terminal.

As an optimization, there is also a contact metering device. The contact metering device is a travel switch, which is installed at the door of the smart meter box, monitors the switch state of the smart meter box, and sends the data on the opening and closing of the meter box to the micro-processing module. Sent to the event sequence event record SOE module, after matching with the time stamp, store it as the event record of the opening and closing state of the watch box;

As an optimization, the power integration module is a PF9808B smart power integration type power meter;

As an optimization, the comparison module is an integrated numerical comparator 74LS85;

As an optimization, the sequence of events event recording SOE module is a 140ERT85420/10 time stamp module;

As an optimization, the microprocessing module is a STM32F1 series Cortex-M3 microcontroller, which includes a 512kB Flash memory and a 64kB data memory;

As an optimization, the communication module is an infrared communication connector, and the model of the infrared communication connector is ZHX1010, which is compatible with the DL645 protocol;

As an optimization, the control module also includes a temperature measurement module, the temperature measurement module is installed on the upper box, monitors the temperature of the electric energy meter and the control module, and sends the temperature signal data to the micro-processing module, which is sent to the event The sequential event record SOE module, after matching with the time scale, is stored as the meter box temperature event record;

As an optimization, the control module also includes a voice alarm module, and the voice alarm module sends a voice alarm prompt after receiving the alarm signal sent by the micro-processing module;

As an optimization, the voice alarm module is a YF1600 series recording IC chip produced by Yinfeng Electronics, which uses a main control IC and an external FLASH to realize 10-780 second erasable single-segment recording and power-off storage functions;

As an optimization, the system power supply module also has a charging unit and a rechargeable battery unit. The charging unit converts the 220V power supply into a charging voltage to charge the rechargeable battery unit; the rechargeable battery unit supplies power to the control module during a power failure.

The utility model has a simple structure. By reserving connection terminals for the electric energy meter, the bus wiring in the entire meter box is more standardized, which avoids the problem of inconsistency in the on-site wiring of the on-site construction personnel of the engineering team, and avoids the centralized reading system copying caused by wiring errors. table failed.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the utility model flow chart.

detailed description

Below in conjunction with accompanying drawing and description explain the content of the utility model in detail.

The smart meter box includes an upper box 1 and a lower box 2, characterized in that,

The upper box 1 is a metering part, including an incoming line terminal 11, a fuse 12, an electric energy meter and a control module 13; the electric energy meter is equipped with an electric energy meter 14;

The control module includes a current sensor, a power integration module, a comparison module, a zero-sequence transformer, a microprocessing module, an event sequence event recording SOE module, a system power supply module, a contact metering device 131, a temperature measurement module, a voice alarm module and a communication module ;

The current sensor monitors the current and obtains current data;

The power integration module integrates the received current data sent by the current sensor and the voltage data collected by the electric energy meter to obtain the total power data of the incoming line of the smart meter box of the utility model; the power integration module is PF9808B smart electric power integral type power meter;

The comparison module compares the total electric quantity data of the incoming line with the electric energy data collected by the electric energy meter, and when the difference reaches the set threshold value, an electric stealing alarm signal is sent; the comparison module is an integrated numerical comparator 74LS85

The zero-sequence transformer, when generating a zero-sequence ground current, obtains a leakage current signal, and records a leakage current overrun event record; sends a leakage current signal to the air switch in the lower box, so that the air switch performs a separation and tripping mechanism action , for power-off protection;

After installing a current sensor and a zero-sequence transformer on the incoming line terminal, it is connected to the electric energy meter through a fuse;

The contact metering device 131, the contact metering device is a travel switch, installed at the door of the smart meter box, monitors the switch state of the smart meter box, and sends the data of opening the meter box to the micro-processing module;

The temperature measurement module is installed on the upper box, monitors the temperature of the electric energy meter and the control module, and sends the temperature signal data to the micro-processing module;

Described microprocessing module, is STM32F1 series Cortex-M3 microcontroller, comprises the Flash memory of 512kB, the data memory of 64kB, receives and records the tampering alarm signal that comparison module sends, sends alarm record to event sequence event record SOE module; Receive and record the leakage current data sent by the zero-sequence transformer, and send the leakage current overrun event record to the event sequence event recording SOE module; receive and record the electric energy data collected by the electric energy meter; receive and record the opening and closing meter box sent by the contact metering device Data, send the meter case opening and closing state event record to the event sequence event record SOE module; receive and record the temperature signal data sent by the temperature measurement module, and send the meter case temperature event record to the event sequence event record SOE module;

The event sequence event record SOE module matches the alarm record, leakage current overrun event record, electric energy data, meter box opening and closing state event record, meter box temperature event record with time scale, and stores it as an event record; The sequential event recording SOE module is a 140ERT85420/10 time stamp module;

The communication module sends the event record stored in the SOE module to the meter reading device through the RS-485 mode; the communication module is an infrared communication connector, and the infrared communication connector model is ZHX1010, compatible with the DL645 protocol;

The voice alarm module, after receiving the alarm signal sent by the micro-processing module, the voice alarm module sends a voice alarm prompt; the voice alarm module is the YF1600 series recording IC chip produced by Yinfeng Electronics, which adopts the main control IC and external FLASH Realize 10-780 seconds rewritable single-segment recording and power-off storage function;

The system power supply module is connected to a 220V power supply to obtain the DC voltage required by the control module through a transformer rectifier circuit, and supplies power to the control module; the system power supply module also has a charging unit and a rechargeable battery unit, and the charging unit converts the 220V power supply into a charging voltage Charging the rechargeable battery unit; the rechargeable battery unit supplies power to the control module during a power outage;

The lower box body 2 is a user connection part, including an air switch 21 and a user outlet terminal 22, and two ends of the air switch 21 are respectively connected to the electric energy meter 14 and the user outlet terminal 22.

The utility model monitors the leakage current of the user's electricity consumption, records the leakage current over-limit event and sends an alarm, and additionally prevents electricity theft in the way of one line and one place; it has a temperature monitoring function for key nodes, records and alarms the over-temperature event. Through power comparison, the utility model not only successfully solves the problem of power theft, but more importantly, extends the refined management of line loss from the station area to the meter box, and also takes into account the safe power management function, which has positive economic value.

Claims (10)

1. Intelligent ammeter box, comprises upper box and lower box, it is characterized in that,

Described upper box is metering section, comprises inlet wire connection terminal, fuse, electric energy epi-position and control module; Described electric energy epi-position installs electric energy meter;

Described control module comprises current sensor, electric quantity integration module, comparison module, zero-sequence transformer, micro treatment module, event sequence logout SOE module, system power supply module and communication module;

Described current sensor, monitoring current, obtains current data;

Described electric quantity integration module, the current data send the current sensor received and the voltage data of electric energy meter collection carry out integration, obtain the total electric quantity data of the utility model Intelligent ammeter box inlet wire;

Described comparison module, compares total for inlet wire electric quantity data with the energy data of electric energy meter collection, when difference reaches setting threshold, sends stealing alerting signal;

Described zero-sequence transformer, when producing zero sequence ground current, obtains leakage current signal, and record leakage current transfinites logout; Send leakage current signal to the air switch in lower box, make air switch carry out the action of separation tripping mechanism, carry out power-off protection;

After described inlet wire connection terminal installs current sensor and zero-sequence transformer, then be connected with electric energy meter by fuse;

Described micro treatment module, receive and record comparison module send stealing alerting signal, send alarm logging to event sequence logout SOE module; Receive and record the leakage data that zero-sequence transformer sends, sending leakage current to event sequence logout SOE module transfinites logout; Receive and record electric energy meter gather energy data;

Described event sequence logout SOE module, the logout that alarm logging, leakage current transfinited, energy data mate with markers, and are stored as logout;

Described communication module, sends the logout of event sequence logout SOE module stores by RS-485 mode to kilowatt meter recorder;

Described system power supply module, connection 220V power supply obtains the DC voltage needed for control module, for control module is powered through transformer rectification circuit;

Described lower box is terminal block part, comprises air switch and user's outgoing line side connection terminal, and the two ends of described air switch connect electric energy meter and user's outgoing line side connection terminal respectively.

2. Intelligent ammeter box as claimed in claim 1, it is characterized in that, contact measuring apparatus in addition, described contact measuring apparatus is travel switch, is arranged on intelligent electric meter chamber door place, the on off state of monitoring intelligent ammeter box, keying is shown case data and be sent to micro treatment module, be sent to event sequence logout SOE module by micro treatment module, after mating with markers, be stored as table case open/close states logout.

3. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described electric quantity integration module is PF9808B intelligent power electric energy integral form power meter.

4. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described comparison module is integrated digital comparator 74LS85.

5. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described event sequence logout SOE module is 140ERT85420/10 markers module.

6. Intelligent ammeter box as claimed in claim 1, is characterized in that, described micro treatment module is STM32F1 series Cortex-M3 microcontroller, comprises the flash storage of 512kB, the data-carrier store of 64kB.

7. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described communication module is infrared communication joint, and described infrared communication joint model is ZHX1010, compatible DL645 agreement.

8. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described control module also comprises temperature-measuring module, described temperature-measuring module is arranged on upper box, monitoring electric energy meter and control module temperature, and temperature signal data is sent to micro treatment module, be sent to event sequence logout SOE module by micro treatment module, after mating with markers, be stored as table case temperature event record.

9. Intelligent ammeter box as claimed in claim 1, it is characterized in that, described control module also comprises voice alarm module, and described voice alarm module sends audio alert prompting after receiving the alerting signal that micro treatment module sends.

10. Intelligent ammeter box as claimed in claim 9, is characterized in that, described voice alarm module is the YF1600 series recording IC chip that silver-colored peak electronics is produced, and adopts master control IC and plug-in FLASH to realize erasable single hop recording 10-780 second and power down memory function.