CN208621750U - Intelligent electric meter risk monitoring system - Google Patents
Intelligent electric meter risk monitoring system Download PDFInfo
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- CN208621750U CN208621750U CN201821365352.7U CN201821365352U CN208621750U CN 208621750 U CN208621750 U CN 208621750U CN 201821365352 U CN201821365352 U CN 201821365352U CN 208621750 U CN208621750 U CN 208621750U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 22
- 238000005259 measurement Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
Intelligent electric meter risk monitoring system provided by the utility model, including three-phase alternating current, voltage detection device and current detecting equipment, the voltage and current that voltage detection device and current detecting equipment will test, which is transmitted in electric energy computation chip, to be calculated, then after carrying out data processing by microcontroller again, electricity consumption is obtained；Simultaneously, after voltage detection device and current detecting collect voltage and current signals, it is filtered by Anti-aliasing Filter Circuits, using being transmitted to A/D conversion circuit after level shifting circuit switching levels, phase-locking frequency multiplication circuit carries out frequency multiplication to the voltage of acquisition, frequency-doubled conversion signal is provided for A/D conversion circuit, the voltage, current signal after the conversion of A/D conversion circuit are finally transmitted to microcontroller；The information such as voltage, electric current, electricity consumption and harmonic wave are calculated in microcontroller as a result,.The higher harmonic detecting of precision is realized, to realize the stronger Risk Monitoring of real-time.
Description
Technical field
The utility model relates to intelligent electric meter technical fields, and in particular to intelligent electric meter risk monitoring system.
Background technique
With the construction of global smart grid and State Grid Corporation of China's power information acquisition system, electric energy meter is to more intelligence
Energyization, systematization, modularization and development in pluralism, equipment of the intelligent electric energy meter as information system least significant end, it has also become most
One of electric instrument table product of development potentiality.
Realize that smart grid is built, the detection and improvement to electric harmonic are essential, and the generation of electric harmonic is more
Number is the difference due to user power utilization equipment and generates.With the extensive use of power electronic equipment, the harmonic wave that is generated by it
One of the serious public hazards for having become pollution electric system, bring very big security risk.
Also, with the development of intelligent electric meter technology, RS485 communication module is mostly used to realize the network savvy of data, but
It is that RS485 transceiver has certain common-mode voltage range, common-mode voltage range is that -7V arrives+12V, only meets above-mentioned condition, whole
A network could work normally；It just will affect the reliable and stable of communication when common-mode voltage exceeds this range in network line, make
The risk transmitted at data.
Utility model content
For the defects in the prior art, the utility model provides a kind of intelligent electric meter risk monitoring system, can be realized
The higher harmonic detecting of precision, to realize the stronger Risk Monitoring of real-time.
Intelligent electric meter risk monitoring system provided by the utility model, including three-phase alternating current, and and three-phase alternating current
The voltage detection device and current detecting equipment of line connection, voltage detection device and current detecting equipment respectively with electrical energy measurement core
Piece is connected, and electric energy computation chip is connected with microcontroller；It is also respectively connected on voltage detection device and current detecting equipment
There are an Anti-aliasing Filter Circuits, Anti-aliasing Filter Circuits are according to being sequentially connected with level shifting circuit, A/D conversion circuit and microcontroller
Device；According to phase-locking frequency multiplication circuit is sequentially also connected on voltage detection device, voltage detection device, phase-locking frequency multiplication circuit and A/D turn
Circuit is changed according to being sequentially connected with；RS485 communication module is provided on microcontroller, RS485 communication module and host computer communicate to connect.
Further, electric energy computation chip uses ATT7022B three-phase electric energy the special metering IC, ATT7022B three-phase electricity
It can be equipped with register inside the special metering IC, it can be to voltage, circuit, active power, reactive power, fundamental wave and harmonic electric energy
Etc. the measurement of multinomial electric energy parameter.
Further, RS485 communication module includes RS485 communication interface and RS485 chip, is communicated by the RS485
Interface, microcontroller and host computer communicate to connect.
Further, connection and Acquisition Circuit at RS485 communication interface, the Acquisition Circuit is for acquiring RS485 communication
The voltage signal of interface
It further, further include load trim circuits, three-phase alternating current, load trim circuits and RS485 chip are according to sequentially
It is connected, microcontroller is connected with load trim circuits.
As shown from the above technical solution, the utility model has the beneficial effects that
The utility model provides a kind of intelligent electric meter risk monitoring system, including three-phase alternating current, and and three-phase alternating current
The voltage detection device and current detecting equipment of electric wire connection, voltage detection device and current detecting equipment respectively with electrical energy measurement
Chip is connected, and electric energy computation chip is connected with microcontroller；The electricity that voltage detection device and current detecting equipment will test
Pressure and electric current, which are transmitted in electric energy computation chip, to be calculated, and after then carrying out data processing by microcontroller again, is used
Electricity；Meanwhile after voltage detection device and current detecting collect voltage and current signals, carried out by Anti-aliasing Filter Circuits
Filtering, using being transmitted to A/D conversion circuit after level shifting circuit switching levels, phase-locking frequency multiplication circuit to the voltage of acquisition into
Row frequency multiplication provides frequency-doubled conversion signal for A/D conversion circuit, and the voltage, current signal after the conversion of A/D conversion circuit finally pass
Transport to microcontroller；The information such as voltage, electric current, electricity consumption and harmonic wave are calculated in microcontroller as a result,.Realize that precision is higher
Harmonic detecting, to realize the stronger Risk Monitoring of real-time.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is a kind of control block diagram of intelligent electric meter risk monitoring system of the utility model.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality
The ordinary meaning understood with novel one of ordinary skill in the art.
Such as Fig. 1, a kind of intelligent electric meter risk monitoring system provided in this embodiment, including three-phase alternating current, and with three
The voltage detection device and current detecting equipment of phase alternating current wires connection, voltage detection device and current detecting equipment respectively with electricity
Energy metering chip is connected, and electric energy computation chip is connected with microcontroller；Voltage detection device and current detecting equipment will be examined
The voltage and current of survey, which is transmitted in electric energy computation chip, to be calculated, after then carrying out data processing by microcontroller again,
Obtain electricity consumption；
Anti-aliasing Filter Circuits, Anti-aliasing Filter Circuits are also respectively connected on voltage detection device and current detecting equipment
According to being sequentially connected with level shifting circuit, A/D conversion circuit and microcontroller, according to being sequentially also connected with lock on voltage detection device
Phase frequency multiplier circuit, voltage detection device, phase-locking frequency multiplication circuit and A/D conversion circuit are according to being sequentially connected with；It is provided on microcontroller
RS485 communication module.
After voltage detection device and current detecting collect voltage and current signals, filtered by Anti-aliasing Filter Circuits
Wave, using A/D conversion circuit is transmitted to after level shifting circuit switching levels, phase-locking frequency multiplication circuit carries out the voltage of acquisition
Frequency multiplication provides frequency-doubled conversion signal for A/D conversion circuit, and the voltage, current signal after the conversion of A/D conversion circuit finally transmit
To microcontroller；The information such as voltage, electric current, frequency and harmonic wave are calculated by microcontroller.
Electric energy computation chip uses ATT7022B three-phase electric energy the special metering IC, ATT7022B three-phase electric energy special measuring
Chip interior is equipped with register, can be to the measurement of the multinomial electric energy parameter such as voltage, circuit, active power, reactive power.
RS485 communication module includes RS485 communication interface and RS485 chip, passes through RS485 communication interface, microcontroller
It is communicated to connect with host computer.It further include load trim circuits, three-phase alternating current, load trim circuits and RS485 chip are according to sequentially
It is connected, microcontroller is connected with load trim circuits；It further include Acquisition Circuit, Acquisition Circuit acquires RS485 communication interface
Voltage signal, and the voltage signal of collected RS485 communication interface is transmitted to microcontroller, microcontroller is judged.
When being judged as that failure occurs, that is, when the voltage signal of the RS485 communication interface acquired is not in the range of -7V to+12V, lead to
Microcontroller control load trim circuits are crossed, to adjust common-mode voltage.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (5)
1. intelligent electric meter risk monitoring system, it is characterised in that: including three-phase alternating current, and connect with three-phase alternating current electric wire
Voltage detection device and current detecting equipment, the voltage detection device and current detecting equipment respectively with electric energy computation chip phase
Connection, the electric energy computation chip are connected with microcontroller；
Anti-aliasing Filter Circuits, the anti-aliasing filter are also respectively connected on the voltage detection device and current detecting equipment
Circuit is according to being sequentially connected with level shifting circuit, A/D conversion circuit and microcontroller；On the voltage detection device according to sequentially also
It is connected with phase-locking frequency multiplication circuit, the voltage detection device, phase-locking frequency multiplication circuit and A/D conversion circuit are according to being sequentially connected with；It is described
RS485 communication module is provided on microcontroller, the RS485 communication module and host computer communicate to connect.
2. intelligent electric meter risk monitoring system according to claim 1, it is characterised in that: the electric energy computation chip uses
ATT7022B three-phase electric energy the special metering IC, the ATT7022B three-phase electric energy the special metering IC inside are equipped with register,
It can be to the measurement of the multinomial electric energy parameter such as voltage, circuit, active power, reactive power, fundamental wave and harmonic electric energy.
3. intelligent electric meter risk monitoring system according to claim 1, it is characterised in that: the RS485 communication module packet
RS485 communication interface and RS485 chip are included, by the RS485 communication interface, microcontroller and host computer are communicated to connect.
4. intelligent electric meter risk monitoring system according to claim 3, it is characterised in that: at the RS485 communication interface
Connection and Acquisition Circuit, the Acquisition Circuit are used to acquire the voltage signal of RS485 communication interface.
5. intelligent electric meter risk monitoring system according to claim 4, it is characterised in that: it further include load trim circuits,
The three-phase alternating current, load trim circuits and RS485 chip connect according to being sequentially connected, the microcontroller and load trim circuits
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821365352.7U CN208621750U (en) | 2018-08-23 | 2018-08-23 | Intelligent electric meter risk monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821365352.7U CN208621750U (en) | 2018-08-23 | 2018-08-23 | Intelligent electric meter risk monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208621750U true CN208621750U (en) | 2019-03-19 |
Family
ID=65716116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821365352.7U Expired - Fee Related CN208621750U (en) | 2018-08-23 | 2018-08-23 | Intelligent electric meter risk monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208621750U (en) |
-
2018
- 2018-08-23 CN CN201821365352.7U patent/CN208621750U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 |