CN112034248A - Intelligent electric meter box - Google Patents
Intelligent electric meter box Download PDFInfo
- Publication number
- CN112034248A CN112034248A CN202010718908.1A CN202010718908A CN112034248A CN 112034248 A CN112034248 A CN 112034248A CN 202010718908 A CN202010718908 A CN 202010718908A CN 112034248 A CN112034248 A CN 112034248A
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- 230000005611 electricity Effects 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Abstract
An intelligent ammeter box comprises an electric energy sampling chip, a main control chip, a temperature detection circuit, a communication interface circuit and an alarm circuit; the main control chip is connected with the three-phase electric energy sampling chip, the communication interface circuit, the alarm circuit and the temperature detection circuit; the electric energy metering chip is connected with the single-phase meter. The invention can detect the total energy of the ammeter box and the electric energy used by each user, and then compares the difference value of the total energy and the electric energy used by each user to detect the electricity stealing prevention, thereby practically preventing the electricity stealing; the invention can record the current overrun condition through the leakage current transformer and can give an alarm.
Description
Technical Field
The invention belongs to an electric meter box, and particularly relates to an intelligent electric meter box capable of preventing electricity stealing.
Background
In recent years, with the improvement of living standard of people, household electrical equipment is increased, the bearing capacity of circuits is increased by various electrical loads, the situations of overload operation, short circuit and the like of the circuits occur occasionally, and fire caused by the electrical equipment also occurs occasionally. Therefore, the power consumption is necessary to be monitored, the power overload is alarmed in advance, and potential safety hazards are eliminated. When the line has electric leakage, the user can be prompted through means of voice alarm and the like at the first time, unsafe power utilization can be realized, and related personnel can be found for maintenance as soon as possible.
In addition, the electricity stealing phenomenon is a great problem troubling power supply enterprises all the time, and the electricity stealing not only causes serious economic loss to countries and groups, but also restricts the improvement of economic benefits. With the increasing development of science and technology, the way and technology of electricity stealing become more and more sophisticated, and the traditional electricity stealing prevention method is difficult to receive ideal effect, so the electricity stealing prevention technical measures should be developed towards high-tech, automatic and intelligent directions.
Disclosure of Invention
The invention provides an intelligent ammeter box, which aims to solve the problems in the prior art.
The invention adopts the following technical scheme:
an intelligent ammeter box comprises an electric energy sampling chip, a main control chip, a temperature detection circuit, a communication interface circuit and an alarm circuit;
the main control chip is connected with the three-phase electric energy sampling chip, the communication interface circuit, the alarm circuit and the temperature detection circuit;
the electric energy metering chip is connected with the single-phase meter.
The intelligent electric energy meter further comprises a power module connected with the internal electric equipment of the intelligent electric energy meter, and the power module is connected with the main power supply loop.
The main control chip of the electric meter box is also connected with a current transformer for detecting whether the main power supply loop leaks electricity.
The main control chip of the electric energy meter is also connected with an electric energy metering chip for detecting the power supply quantity of the main power supply loop.
The intelligent ammeter box further comprises a box door and a travel switch linked with the box door.
The communication module comprises an RS485 interface and a UART interface which are connected with the main control chip.
The alarm circuit comprises a buzzer and a voice alarm module which are connected with the main control chip.
The power module includes a battery connected with a main power supply loop.
The invention has the beneficial effects that:
(1) the invention can detect the total energy of the ammeter box and the electric energy used by each user, and then compares the difference value of the total energy and the electric energy used by each user to detect the electricity stealing prevention, thereby practically preventing the electricity stealing;
(2) the invention can record the current overrun condition through the leakage current transformer and can give an alarm.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same technical meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The invention provides an intelligent ammeter box which comprises an electric energy sampling chip, a main control chip, a temperature detection circuit, a communication interface circuit and an alarm circuit, wherein the electric energy sampling chip is connected with the main control chip; the main control chip is connected with the electric energy sampling chip, the communication interface circuit, the alarm circuit and the temperature detection circuit; the electric energy metering chip is connected with the single-phase meter. If the electric energy meter is a three-phase meter consisting of three single-phase meters, the electric energy metering chip is connected with the three single-phase meters and then is connected with the main control chip, the electric energy metering chip can read data of the single-phase meters, and then the data are converted and then sent to the main control chip, so that the main control chip can obtain electric quantity data of the single-phase meters.
Wherein:
the master control chip can adopt a Cortex-M3 microcontroller, and the STM32F1XX series Cortex-M3 microcontroller is used for processing peripheral components of an embedded application Cortex-M3 microcontroller which requires high integration and low power consumption, and comprises a Flash memory with the maximum clock frequency of 512KB, a data memory with the maximum clock frequency of 64KB, 5 UARTs, an SPI interface, an I2C interface, a 12-bit ADC with 10 channels, 4 universal timers, 6-output universal PWM, a built-in low-power RTC and up to 70 universal I/O pins.
The electric energy sampling chip is used for connecting the three single-phase meters, acquiring the electricity consumption data of the single-phase meters and then sending the data to the main control chip. The electric energy sampling chip mainly samples electric energy parameters including voltage, current information and calculation power, electric quantity and the like, and the electric energy sampling chip can select the existing chip, for example, has a 3-way 24-bit AD converter, a 16-bit clock, a 16-bit hardware adder, and simultaneously has a serial interface, a watchdog clock and 11 IO pins.
The temperature detection circuit is used for monitoring the temperature of key nodes of the electric meter box, and can record and alarm overtemperature events when overtemperature is detected, the temperature sensor can be arranged at any position in the electric meter box, which needs to be monitored, for example, the temperature sensor can be arranged at the inlet side of a main power supply circuit of the electric meter box, the temperature of the side of the main power supply circuit is measured, the temperature monitored by the temperature sensor is sent to the main control chip, the main control chip judges whether the temperature exceeds the standard or not according to the temperature threshold value preset inside, if the temperature exceeds the standard, the alarm is given, and information such as data and time with the temperature exceeding the standard is recorded.
The temperature sensors for the prior hot door include the following ones: thermocouple temperature sensors, thermal resistance temperature sensors, infrared temperature sensors, digital temperature sensors, and the like. Wherein thermal resistance sensor circuit is simple and convenient and with low costs, advantage that the main control chip self of utilization that can be fine, because intelligent ammeter case is not high to temperature measurement's required precision, as long as can reach 1 ℃ can, so choose the mode of selecting for use resistance temperature measurement to go on.
The alarm circuit comprises a buzzer and a voice alarm module which are connected with the main control chip and used for carrying out voice alarm when alarm is needed, and the alarm circuit can also comprise a display screen used for displaying alarm content. The voice alarm module can select YF1600 series recording IC chip of silver peak electron. The chip is a recording IC series product successfully developed according to the recording product market, and the erasable single-segment recording and power-down storage functions of 10-780 seconds are realized by adopting a main control IC plus an external FLASH; the YF1600 series products are characterized in that: the recording and sampling frequency is high, the sound quality is good, the volume is large, the PWM direct push speaker has few peripheral elements, the cost is low, the production is convenient, and the application is flexible; the main functional characteristics of the IC are as follows: different combination applications of the recording key and the playing key are realized in the same main control IC; only need an external port just can realize reporting the warning pronunciation of prerecording, control is simple. The installation and debugging are convenient.
The alarm circuit can also comprise a light ray alarm module connected with the main control chip, and the various alarm modules can lead the working personnel to find problems in real time, prevent situation expansion, eliminate fire hazard and improve the power utilization safety,
the communication module comprises an RS485 interface and a UART interface which are connected with the main control chip, and the RS485 interface is used for connecting an RS485 bus for communication; because the intelligent ammeter needs to access the RS-485 line of the ammeter into the intelligent module, the RS-485 bus needs to be arranged in advance in the intelligent ammeter box, and the wiring terminal is reserved for the ammeter, so that the wiring of the RS-485 bus in the whole ammeter box is more standard, the problem of messy winding displacement caused by uneven quality of field constructors of an engineering team is avoided, the failure of meter reading of a meter reading system caused by wiring errors is avoided, and the success rate of meter reading is improved. The UART interface can be connected with the infrared communication module or the 433 wireless communication module and is used for carrying out wireless communication with external equipment.
When the intelligent ammeter box is applied specifically, the intelligent ammeter box mainly completes communication between the main control chip and an external centralized meter reading system, a palm machine and a single-phase ammeter. The communication between the main control chip and the single-phase electric meters mainly reads the electric quantity of each single-phase electric meter; the communication between the main control chip and the centralized meter reading system and the palm machine mainly comprises reading the event record of abnormal electricity utilization, the power failure event, the incoming electricity event, the temperature condition of the meter box and the like. Therefore, the RS-485 communication mode is used for communication between the main control chip and the external centralized meter reading system and between the main control chip and the single-phase electric meter. In order to have enough operation initiative, real-time performance and stability, the intelligent ammeter case main control chip uses the infrared communication mode with the communication of palm machine, compatible DL645 agreement.
The intelligent electric energy meter also comprises a power supply module connected with electric equipment inside the intelligent electric energy meter, wherein the power supply module is connected with a main power supply loop, the power supply module can select the existing rechargeable power supply module, such as a rechargeable battery, the main power supply loop can be an alternating current 220V power supply, the rechargeable power supply module of the power supply module is charged through the main power supply loop, and then the rechargeable power supply module supplies power to electric elements in the electric meter boxes such as a main control chip and an alarm circuit.
The main control chip of the electricity meter box is also connected with a current transformer for detecting whether the main power supply loop leaks electricity, as shown in the figure, the current transformer is CT, the current transformer is connected to the main power supply loop and used for detecting whether the main power supply loop leaks electricity and sending a detection result to the main control chip, after the main control chip receives a signal of the current transformer, the signal is compared with a preset threshold value of the current transformer to judge whether the electricity leaks electricity, and if the electricity leaks, an alarm is given.
The main control chip of the electric energy meter is also connected with an electric energy metering chip for detecting the power supply electric quantity of the main power supply loop, and the electric energy metering chip is used for acquiring the total electric quantity of the electric meter box. The electric meter box can accurately reflect the real electricity utilization condition of the user by monitoring the total electric energy of the electric meter box and the electric energy used by each user, simultaneously compare the difference value between the electric meter box and the user, and if the difference value exceeds the set range, the electricity stealing condition is indicated, so that the electricity stealing condition can be practically prevented. The intelligent electric meter box can additionally prevent electricity stealing in a line-to-ground mode for monitoring leakage current.
The intelligent electric meter box also comprises a box door and a travel switch linked with the box door, so that the door opening event of the electric meter box can be recorded and alarmed, and the illegal transformation of a user on an electric wire can be avoided. The specific reason is that electricity thieves need to contact the metering device, so that the upper part of the electric meter box must be opened if electricity is stolen, a travel switch is arranged at the door of the meter box in the intelligent electric meter box, the opening and closing states of the door of the meter box are detected, events are recorded, and when the meter box is illegally opened, the events are recorded and local alarm is sent to deter the electricity thieves; if meter reading personnel open the meter box door, the secret key authentication can be carried out through the handset terminal, and then legal opening is carried out. Travel switch or micro-gap switch that set up in ammeter case chamber door department, then judge whether ammeter case chamber door is opened for the commonly used technical means among the prior art according to travel switch or micro-gap switch, no longer give unnecessary details.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. An intelligent ammeter case which is characterized in that: the intelligent ammeter box comprises an electric energy sampling chip, a main control chip, a temperature detection circuit, a communication interface circuit and an alarm circuit;
the main control chip is connected with the three-phase electric energy sampling chip, the communication interface circuit, the alarm circuit and the temperature detection circuit;
the electric energy metering chip is connected with the single-phase meter.
2. The intelligent ammeter box as claimed in claim 1, wherein:
the intelligent electric energy meter further comprises a power module connected with the internal electric equipment of the intelligent electric energy meter, and the power module is connected with the main power supply loop.
3. The intelligent ammeter box as claimed in claim 1, wherein:
the main control chip of the electric meter box is also connected with a current transformer for detecting whether the main power supply loop leaks electricity.
4. The intelligent ammeter box as claimed in claim 1, wherein:
the main control chip of the electric energy meter is also connected with an electric energy metering chip for detecting the power supply quantity of the main power supply loop.
5. The intelligent ammeter box as claimed in claim 1, wherein:
the intelligent ammeter box further comprises a box door and a travel switch linked with the box door.
6. The intelligent ammeter box as claimed in claim 1, wherein:
the communication module comprises an RS485 interface and a UART interface which are connected with the main control chip.
7. The intelligent ammeter box as claimed in claim 1, wherein:
the alarm circuit comprises a buzzer and a voice alarm module which are connected with the main control chip.
8. A smart electricity meter box according to claim 2, characterised in that:
the power module includes a battery connected with a main power supply loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010718908.1A CN112034248A (en) | 2020-07-23 | 2020-07-23 | Intelligent electric meter box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010718908.1A CN112034248A (en) | 2020-07-23 | 2020-07-23 | Intelligent electric meter box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112034248A true CN112034248A (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010718908.1A Pending CN112034248A (en) | 2020-07-23 | 2020-07-23 | Intelligent electric meter box |
Country Status (1)
| Country | Link |
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| CN (1) | CN112034248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684232A (en) * | 2021-02-01 | 2021-04-20 | 宁夏隆基宁光仪表股份有限公司 | Intelligent ammeter capable of preventing electricity theft |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621363A (en) * | 2012-03-30 | 2012-08-01 | 上海市电力公司 | Intelligent single-phase electrical energy metering tank |
| CN107621563A (en) * | 2016-07-13 | 2018-01-23 | 国网上海市电力公司 | A kind of Multifunctional electric meter case of integrated multiple faults monitoring |
-
2020
- 2020-07-23 CN CN202010718908.1A patent/CN112034248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621363A (en) * | 2012-03-30 | 2012-08-01 | 上海市电力公司 | Intelligent single-phase electrical energy metering tank |
| CN107621563A (en) * | 2016-07-13 | 2018-01-23 | 国网上海市电力公司 | A kind of Multifunctional electric meter case of integrated multiple faults monitoring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684232A (en) * | 2021-02-01 | 2021-04-20 | 宁夏隆基宁光仪表股份有限公司 | Intelligent ammeter capable of preventing electricity theft |
| CN112684232B (en) * | 2021-02-01 | 2022-03-25 | 宁夏隆基宁光仪表股份有限公司 | Intelligent ammeter capable of preventing electricity theft |
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Application publication date: 20201204 |
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| RJ01 | Rejection of invention patent application after publication |