CN206697033U - A kind of electric energy meter multi-channel synchronous data acquisition system - Google Patents
A kind of electric energy meter multi-channel synchronous data acquisition system Download PDFInfo
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- CN206697033U CN206697033U CN201720141104.3U CN201720141104U CN206697033U CN 206697033 U CN206697033 U CN 206697033U CN 201720141104 U CN201720141104 U CN 201720141104U CN 206697033 U CN206697033 U CN 206697033U
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- electric energy
- energy meter
- retainer
- sampling
- data acquisition
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Abstract
A kind of electric energy meter multi-channel synchronous data acquisition system, including intelligent electric energy meter, triggers circuit, multidiameter option switch, sampling/retainer, buffer, A/D converting units, I/O interface units, industrial computer and control unit, wherein described multidiameter option switch respectively with the sampling/retainer, triggers circuit connects with buffer, the A/D converting units are connected with the buffer and the I/O interface units respectively, the I/O interface units are connected with the industrial computer, the buffer and the A/D converting units and the I/O interface units are integrated in described control unit, sampling/the retainer is connected with the intelligent electric energy meter.An A/D converter is shared in the utility model at multidiameter option switch, there is a sampling/retainer per road signalling channel, signal synchronously carries out signal sampling on same sampling instruction control Xia Duige roads, can realize the parallel data acquisition of electric energy meter, picking rate is fast, cheap.
Description
Technical field
Data collecting field is the utility model is related to, and relates more specifically to a kind of electric energy meter multi-channel synchronous data acquisition
System.
Background technology
In recent years, with the continuous social and economic development, the quality and quantity of society's electricity consumption is all being substantially improved.Power supply enterprise
Industry needs to understand the power supply capacity of itself in real time and the demand, quantity, quality and the time of user power utilization etc. of user is increasingly sophisticated
Change, it is also necessary to grasp the power information of the user of its supply district, to adjust in time, improve power supplying efficiency, improve enterprise
Industry efficiency.But the number of users of general power supply enterprise is big, scope is wide, if to obtain power information and the power supply of user
The power supply capacity information of enterprise itself, it is necessary to substantial amounts of personnel go gathered data and processing data, the speed of gathered data and
The speed of processing data is all very slow, it is necessary to devote a tremendous amount of time, it is impossible to the power information of reflection user and the confession of itself in time
Electric energy force information, the needs of user can not be met by causing the power supply capacity of power supply enterprise, increased substantial amounts of manpower progress data and adopted
Collection, increase human cost, cause the performance of enterprises to decline.
Traditional electric energy meter data acquisition is to gather write by hand table by various specialties to realize with analysis, and this mode can only
For certain specific measurement analysis project, application is narrower, and the mode of conventional data acquisition is capture card, the master of capture card
It is installation trouble to want defect, expensive, and is limited by the quantity of computer slot, address, interrupt resources etc., scalability
It is poor.In the strong test site of some electromagnetic disturbances, specially it can not be electromagnetically shielded, cause gathered data distortion.
Utility model content
In order to overcome above-mentioned deficiency of the prior art, the utility model provides a kind of electric energy meter multi-channel synchronous data
Acquisition system, multi-channel analog input signal shares an A/D converter in the system, but each passage respectively have a sampling/
Retainer, on same sampling instruction control Xia Duige roads, signal synchronously carries out signal sampling, obtains each road signal in synchronization
Instant value, each road sampling/retainer is switched on A/D converter and carries out analog-converted by analog switch timesharing, these synchronizations
Data can describe the phase relation of each road signal, and the system can realize the parallel data acquisition of electric energy meter, and picking rate is fast.
The utility model uses following technical scheme：
A kind of electric energy meter multi-channel synchronous data acquisition system, including intelligent electric energy meter, triggers circuit, multi-path choice are opened
Pass, sampling/retainer, buffer, A/D converting units, I/O interface units, industrial computer and control unit, wherein the multichannel
Selecting switch is connected with sampling/retainer, triggers circuit and the buffer respectively, the A/D converting units respectively with it is described
Buffer is connected with the I/O interface units, and the I/O interface units are connected with the industrial computer, the buffer and described
A/D converting units and the I/O interface units are integrated in described control unit, the sampling/retainer and the intelligence electricity
Can table connection.
Preferably, the triggers circuit includes trigger switch and the relay being connected with the trigger switch.
Preferably, the sampling/retainer is based on LF198 chip circuits.
Preferably, described control unit is microprocessor, and the microprocessor is STC15 series monolithics.
Preferably, the A/D converting units are 8 passage, 10 high-speed a/d units.
Preferably, multidiameter option switch selects 1 multidiameter option switch CC4051B using 8.
Preferably, the sampling/retainer is at least two samplings/retainer.
Preferably, the buffer is input buffer.
Positive beneficial effect：
An A/D converter is shared in the utility model at multidiameter option switch, have per road signalling channel a sampling/
Retainer, on same sampling instruction control Xia Duige roads, signal synchronously carries out signal sampling, obtains each road signal in synchronization
Instant value, each road sampling/retainer is switched in A/D converting units and carries out analog-converted by analog switch timesharing, and these are same
Step data can describe the phase relation of each road signal, and the system can realize the parallel data acquisition of electric energy meter, picking rate
It hurry up.
Brief description of the drawings
Fig. 1 is the schematic diagram of structure of the present utility model；
Fig. 2 is the structural representation of sampling/retainer in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, a kind of electric energy meter multi-channel synchronous data acquisition system, including it is intelligent electric energy meter, triggers circuit, more
Road selecting switch, sampling/retainer, buffer, A/D converting units, I/O interface units, industrial computer and control unit, wherein
The multidiameter option switch is connected with sampling/retainer, triggers circuit and the buffer respectively, the A/D converting units point
It is not connected with the buffer and the I/O interface units, the I/O interface units are connected with the industrial computer, the buffering
Device and the A/D converting units and the I/O interface units are integrated in described control unit, the sampling/retainer and institute
State intelligent electric energy meter connection.
In the utility model, the triggers circuit includes trigger switch and the relay being connected with the trigger switch.
In the utility model, the sampling/retainer is based on LF198 chip circuits.
In the utility model, described control unit is microprocessor, and the microprocessor is STC15 series monolithics.
In the utility model, the A/D converting units are 8 passage, 10 high-speed a/d units.
In the utility model, multidiameter option switch selects 1 multidiameter option switch CC4051B using 8.
In the utility model, the sampling/retainer is at least two samplings/retainer.
In the utility model, the buffer is input buffer.
As shown in Fig. 2 sampling hold circuit is made up of analog switch, memory element and buffer amplifier A.In sampling
Carve, the data signal being added on analog switch is low level, and now analog switch is switched on, and makes memory element（Typically electric capacity
Device）The voltage U at both endsBWith being sampled signal UAChange.When terminating in the sampling interval, D is changed into high level, and analog switch disconnects, UB
The value for being then maintained at disconnection moment is constant.The effect of buffer amplifier is amplification sampled signal, its connected mode in circuit
There are two kinds of fundamental types：One kind is first to amplify signal to store again, and another is first to store to amplify again.Electricity is kept to preferably sampling
Road, it is desirable to which the no skew of switch simultaneously can be with control signal quick acting, and the impedance of disconnection is infinitely great, while also requires to store member
The voltage of part can trace simulation signal without delay voltage, and can keep numerical value constant within the arbitrarily long time.In this reality
In new, the sampling/retainer is to state sampling/retainer based on LF198 chip circuits, and the circuit is amplified by input
The parts such as device, output amplifier and analog switch logic form, the semiconductor that circuit is combined using ambipolar and FET
Integrated circuit processing technique, DC precision is high, and picking rate is high, and input impedance is high and retention property is preferable, in specific embodiment
In, the input impedance of the sampling/retainer is up to 1010 Ω, minimum 0.5 Ω of output impedance, gain error 0.002%,
The leakage current for flowing into holding capacitor is 30Pa, and the signal acquisition time is less than 10 μ s, is more than 1 μ F situation in extraneous holding capacitor
Under, voltage rate of descent is 5mV/min, because input amplifier using bipolar technology and adds feedback element, has device
There are the premium properties such as low drifting, broadband, can stably be worked under 1MHZ speed.
In the utility model, described control unit is microprocessor, and the microprocessor is STC15 series monolithics.
In a particular embodiment, STC15F2K60S2 single-chip microcomputers can be selected, are that STC15 collects in itself from the serial single-chip microcomputer
Into there is 12,8 tunnel A/D converting units, it is possible to which not external A/D conversion cores or external A/D converting units, this just drops significantly
Low cost.Its I/O interface is up to 42.
In the utility model, display selects 19 inches of LCD liquid crystal display screens to show that the gathered data of electric energy meter is believed
Breath situation, for users to use.
In a particular embodiment, user needs that electric energy meter quality is analyzed and commented according to the electric energy meter data of collection
Valency, sampling/retainer can parallel synchronous work, in the present embodiment, can be specially the first sampling/retainer, second sampling/
Retainer and N samplings/retainer, this mode can Shi Ge roads collection signal be independent of each other, do not interfere with each other, triggers circuit
Multidiameter option switch control sampling/retainer is triggered, the effect for commonly entering buffer is that the data for sending peripheral hardware are temporarily deposited
Put, so as to the processing of follow-up data, so that it may so that the control unit of high speed operation and the peripheral hardware to work at a slow speed rise and coordinate and buffer
Effect, realize the synchronization of data transmission.An A/D converter is shared at multidiameter option switch, has one per road signalling channel
Sampling/retainer, on same sampling instruction control Xia Duige roads, signal synchronously carries out signal sampling, obtains each road signal same
Each road sampling/retainer is switched in A/D converting units and carries out analog-converted by the instant value at moment, analog switch timesharing, turns
Electric energy acquisition data after changing upload industrial computer by I/O interface units, and data processing, management are carried out by industrial computer.This is
The parallel data acquisition of electric energy meter can be realized by uniting, and picking rate is fast.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These embodiments are merely illustrative of, and those skilled in the art is not departing from principle of the present utility model and essence
In the case of, various omissions, substitutions and changes can be carried out to the details of the above method and system.For example, merge above method step
Suddenly, so as to perform substantially identical function according to substantially identical method to realize that it is new that substantially identical result then belongs to this practicality
The scope of type.Therefore, the scope of the utility model is only limited by the claims that follow.
Claims (8)
1. a kind of electric energy meter multi-channel synchronous data acquisition system, it is characterised in that including intelligent electric energy meter, triggers circuit, more
Road selecting switch, sampling/retainer, buffer, A/D converting units, I/O interface units, industrial computer and control unit, wherein
The multidiameter option switch is connected with sampling/retainer, triggers circuit and the buffer respectively, the A/D converting units point
It is not connected with the buffer and the I/O interface units, the I/O interface units are connected with the industrial computer, the buffering
Device and the A/D converting units and the I/O interface units are integrated in described control unit, the sampling/retainer and institute
State intelligent electric energy meter connection.
A kind of 2. electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that the triggering
Circuit includes trigger switch and the relay being connected with the trigger switch.
3. a kind of electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that described to adopt
Sample/retainer is based on LF198 chip circuits.
A kind of 4. electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that the control
Unit is microprocessor, and the microprocessor is STC15 series monolithics.
A kind of 5. electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that the A/D
Converting unit is 8 passage, 10 high-speed a/d units.
A kind of 6. electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that multi-path choice
Switch selects 1 multidiameter option switch CC4051B using 8.
7. a kind of electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that described to adopt
Sample/retainer is at least two samplings/retainer.
A kind of 8. electric energy meter multi-channel synchronous data acquisition system according to claim 1, it is characterised in that the buffering
Device is input buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720141104.3U CN206697033U (en) | 2017-02-16 | 2017-02-16 | A kind of electric energy meter multi-channel synchronous data acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720141104.3U CN206697033U (en) | 2017-02-16 | 2017-02-16 | A kind of electric energy meter multi-channel synchronous data acquisition system |
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| CN206697033U true CN206697033U (en) | 2017-12-01 |
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|---|---|---|---|
| CN201720141104.3U Expired - Fee Related CN206697033U (en) | 2017-02-16 | 2017-02-16 | A kind of electric energy meter multi-channel synchronous data acquisition system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108446077A (en) * | 2018-03-21 | 2018-08-24 | 华立科技股份有限公司 | Electric energy meter communication data storage method, device and electric energy meter |
| CN109961621A (en) * | 2017-12-22 | 2019-07-02 | 中国电信股份有限公司 | Automatic meter reading method, device, system and ammeter |
| CN110108934A (en) * | 2018-02-01 | 2019-08-09 | 株洲中车时代电气股份有限公司 | A kind of multichannel voltameter scale |
-
2017
- 2017-02-16 CN CN201720141104.3U patent/CN206697033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961621A (en) * | 2017-12-22 | 2019-07-02 | 中国电信股份有限公司 | Automatic meter reading method, device, system and ammeter |
| CN110108934A (en) * | 2018-02-01 | 2019-08-09 | 株洲中车时代电气股份有限公司 | A kind of multichannel voltameter scale |
| CN108446077A (en) * | 2018-03-21 | 2018-08-24 | 华立科技股份有限公司 | Electric energy meter communication data storage method, device and electric energy meter |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20190216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |