CN1936599A - Electric energy meter with function of collecting multiple meter's data - Google Patents
Electric energy meter with function of collecting multiple meter's data Download PDFInfo
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- CN1936599A CN1936599A CN 200510029809 CN200510029809A CN1936599A CN 1936599 A CN1936599 A CN 1936599A CN 200510029809 CN200510029809 CN 200510029809 CN 200510029809 A CN200510029809 A CN 200510029809A CN 1936599 A CN1936599 A CN 1936599A
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Abstract
The invention discloses an electric meter with function of collecting data of multiple meters, primarily is composed of a watt-hour meter. Its features: there are data collecting chips and microcontroller in the electric meter. The electric meter is set with pulse signal input terminals of multiple meters. Input end is also connected with the data collector. The invention has a rational structure, is ingeniously conceived, saving costs from the traditional Collector Collection System, using energy efficiently, improving the efficiency, and is a beneficial undertaking, worth promoting.
Description
Technical field
The invention belongs to the precision instrumentation technical field, particularly relate to a kind of electric energy meter.
Background technology
Along with the improvement of the people's living standard, to the requirement of quality of life also in continuous raising.The sort of early stage one-storey house groups of building are replaced by flickering high buildings and large mansions.Table counting according to from house to house become more and more difficult by manually copying and accepting.Therefore, the table counting is according to concentrating the notion of the system that copies and accepts to arise at the historic moment automatically.
Existing centralized meter-reading system principle of work such as figure below, shown in Figure 1.
So main function of system is with electromechanical or all-electronic three tables, such as table meter equipment such as electric energy meter, water meter, gas meter, calorimeters, by metering data conversion to be become pulse signal output.Data acquisition unit is gathered the pulse signal of each table equipment by the constant of every kind of table, by internal calculation, is shown to count certificate accordingly then, is stored in the data acquisition unit.By data concentrator,,, copy and accept host computer (as the PC main website) at last with the data in the each household data acquisition unit by certain means of communication (as RS485 etc.).So just can significantly reduce manually copying and accepting of each household table meter unit, increase work efficiency.
But in existing systems, data acquisition unit independently becomes a product, in using at the scene, has some shortcomings.
At first, all instrument and meters must be installed in the table case of formulation, and existing biography electric meter case does not have the space of installation data collector.So need to use this cover system, must change existing biography electric meter case, cost is higher.And increased mounting hardness.
Secondly, because system is huger, the each household user must install a data collector, and the cost of total system is very high like this.
Therefore, original traditional no collection is copied state transform existing system as, cost is very high.
Summary of the invention
The objective of the invention is to, provide a kind of and can effectively overcome above-mentioned defective, " having the electric energy meter of gathering the multilist function " with electric energy meter in data acquisition unit be one.Significantly reduce the cost of the system reform.
Has the electric energy meter (hereinafter to be referred as acquisition tables) of gathering the multilist function, except electric energy metrical function with itself, the all functions that also have data acquisition unit, data acquisition unit have been shared the power supply of electric energy metrical product and the resource of microprocessor and storage unit.Realize when realizing two kinds of functions by software.
According to the analysis to existing equipment, the technology of general electric energy meter is put case as shown in Figure 2:
Power supply: power supply mainly is responsible for the direct current light current that becomes the decorum to work power frequency 220V voltage transitions, and does the protection and the isolation of some necessity, with the assurance system can be long-term steady operation.
Metering module: metering module mainly is responsible for sampling user's current and voltage signals, by calculating the electric energy that the user consumes.
Digital circuit: after the electric energy that digital circuit mainly is responsible for calculating is handled, provide necessary indication, and support storage and communication function.
Data storage: data storage is mainly stored the significant data of system, comprises the data and the parameter of equipment.
Communication module: as long as communication module is the exchanges data of the equipment of being responsible for and other equipment.
The technology of general data acquisition unit is put case as shown in Figure 3:
The major function and the electric energy meter of the power supply of data acquisition unit, digital circuit, data storage, communication module are roughly the same.
Signals collecting: signals collecting mainly is responsible for gathering the electric impulse signal of each table meter.
Battery: battery mainly is responsible for, when causing city point to cut off the power supply because of various accidents, and water meter, gas meter etc. non-with the ammeter meter still in operate as normal.Therefore, when the power supply cisco unity malfunction, battery provides the continuous firing electric current for system, data acquisition function when realizing having a power failure.
Can find that from Fig. 2, Fig. 3 having in fact can resources shared between the two.Only the need searching is a kind of can realize simultaneously that the single-chip microcomputer of both functions gets final product.We can obtain the block diagram of Fig. 4 thus, the block diagram of the present invention that Here it is.
This shows that digital circuit plays an important role in this invention, also is crucial difficult point place.
We can improve system chart from figure one, as shown in Figure 5:
To achieve these goals, the technical solution adopted in the present invention is, a kind of electric energy meter with collection multilist function, mainly form by an electric energy meter, it is characterized in that: be provided with data acquisition unit chip and single-chip microcomputer in the described electric energy meter, also be provided with the pulse signal input terminal of multilist on the table, input end also is connected with data acquisition unit.Owing to adopt such scheme, be not difficult to draw and the utlity model has following beneficial effect, from comparison Fig. 1 and Fig. 5, we can find: the invention of this acquisition tables, at first, do not have from tradition the collection copy state to the transformation of centralized meter-reading system, need not to change traditional special table case.Original electric energy meter is pulled down, the electric energy meter with collection multilist function directly is installed is got final product.
Secondly, in system, save plug-in data acquisition system (DAS), equipment cost is reduced greatly.
At last, because the reduction of two costs can be accelerated not have collection from tradition greatly and copy the transformation of state to centralized meter-reading system, improve the work efficiency of table meter unit rapidly.And the reliability of meter reading data.The present invention is rational in infrastructure, is skillfully constructed, and can save does not greatly have collection from tradition and copy the improvement cost of state to centralized meter-reading system, and effective use of energy sources improves the work efficiency of all departments.Be a heroic undertaking of benefiting the nation and the people, have promotional value.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is the fundamental diagram of existing centralized meter-reading system.
Fig. 2 is the structured flowchart of general electric energy meter.
Fig. 3 is the structured flowchart of general data collector.
Fig. 4 is a structured flowchart of the present invention.
Fig. 5 is from the improved system chart of Fig. 1.
Fig. 6 is a fundamental diagram of the present invention.
Embodiment
This invention can apply to widely, civilian single-phase electric energy meter, civilian single-phase multi-rate electric energy meter, civilian three-phase electric energy meter, civilian three-phase multi-rate electric energy meter, and various industrial high-end electric energy meter.Practicality is very extensive.
At this, we illustrate as an example with the simplest civilian single-phase electric energy meter.
The principle of work of single-phase electronic energy meter (hereinafter to be referred as electric energy meter) is as shown in Figure 6:
Select the core of the metering special chip ADE7751 of ADI company as metering section for use, the single-chip microcomputer PIC16LC926 that selects U.S. Microchip for use is the single-chip microcomputer of digital end.When ammeter normally uses, electric current on zero line, the phase line is respectively through mutual inductor, produces two-way millivolt magnitude voltage signals, inputs to ADE7751 as the sampled signal of current return, the inner relatively two paths of signals of ADE7751 is got the greater as metering usefulness, reaches anti-partial earth stealing pattern; Simultaneously, phase voltage is through resistor voltage divider circuit, inputs to ADE7751 for sampling as the sampled signal in phase voltage loop, and ADE7751 output electric pulse passes to the usefulness that numerical portion provides metering.Numerical portion receives the electric flux pulse, is made after different frequency division handles by single-chip microcomputer, respectively in order to driving pulse pilot lamp and externally output pulse.
Single-chip microcomputer is also finished the pulse collection function of other table meter unit, and the output pulse collection that each table is counted the unit advances single-chip microcomputer, carries out data processing by single-chip microcomputer.
In addition, single-chip microcomputer also need be handled infrared communication, subsidiary functions such as RS485 communication, liquid crystal display, power down protection.To guarantee system communication.
When primary power source de-energizes, battery provides the continuous firing electric current for single-chip microcomputer and real-time clock, data acquisition function when realizing having a power failure.The single-chip microcomputer of this moment is operated under the low-down power consumption.Can long-term work with the inside boosting battery that guarantees 1.2mAh, need not to change.
This ammeter antijamming capability is strong, the clock accuracy height.Existing electronic watch advantage of high precision, the characteristics that have data volume to be difficult for losing again.
Claims (1)
1, a kind of electric energy meter with collection multilist function, mainly form by an electric energy meter, it is characterized in that: be provided with data acquisition unit chip and single-chip microcomputer in the described electric energy meter, also be provided with the pulse signal input terminal of multilist on the table, input end also is connected with data acquisition unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029809 CN1936599A (en) | 2005-09-20 | 2005-09-20 | Electric energy meter with function of collecting multiple meter's data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029809 CN1936599A (en) | 2005-09-20 | 2005-09-20 | Electric energy meter with function of collecting multiple meter's data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1936599A true CN1936599A (en) | 2007-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510029809 Pending CN1936599A (en) | 2005-09-20 | 2005-09-20 | Electric energy meter with function of collecting multiple meter's data |
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| CN (1) | CN1936599A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819222A (en) * | 2010-03-25 | 2010-09-01 | 杭州炬华科技有限公司 | Intelligent electric energy meter with acquisition function |
| CN105807105A (en) * | 2014-12-29 | 2016-07-27 | 施耐德电气工业公司 | Electric power metering device and method thereof |
-
2005
- 2005-09-20 CN CN 200510029809 patent/CN1936599A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819222A (en) * | 2010-03-25 | 2010-09-01 | 杭州炬华科技有限公司 | Intelligent electric energy meter with acquisition function |
| CN105807105A (en) * | 2014-12-29 | 2016-07-27 | 施耐德电气工业公司 | Electric power metering device and method thereof |
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Open date: 20070328 |