CN106291204A - A kind of high-precise synchronization harvester - Google Patents
A kind of high-precise synchronization harvester Download PDFInfo
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- CN106291204A CN106291204A CN201610876614.5A CN201610876614A CN106291204A CN 106291204 A CN106291204 A CN 106291204A CN 201610876614 A CN201610876614 A CN 201610876614A CN 106291204 A CN106291204 A CN 106291204A
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Classifications
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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Abstract
The invention discloses a kind of high-precise synchronization harvester, including voltage transformer, for the voltage signal before accessing ammeter is sampled；Current transformer, for sampling to the current signal before accessing ammeter；Gearshift control and Signal-regulated kinase, carry out automatic growth control for the signal having sampled voltage transformer summation current transformer, filter and amplify；A/D chip, carries out analog digital conversion for the signal having sampled voltage transformer summation current transformer, and the digital signal converted is sent to FPGA process；The signal that the present invention gathers is with time scale information, achieve the synchronization high precision collecting of the signal of telecommunication, by using voltage, current transformer, ensure that the sampling precision of device, ensure that forceful electric power and light current are completely separable simultaneously, greatly reduce external electromagnetic interference, improve reliability and the safety of device；And these information are possible not only to apply in real time on foreground, it is also possible to compressed package sent carries out various application and analysis to backstage.
Description
Technical field
The present invention relates to electrical signal collection field, be specifically related to a kind of high-precise synchronization harvester.
Background technology
Data acquisition is an important step in signal processing, along with developing rapidly of electronic technology, at electric energy
The on-line monitoring of metering device, in fields such as X-ray inspection X, power information collections, owing to range of application expands, gather quantity of information many,
The precision of data acquisition unit is had higher requirement by people.
Tradition voltage and current signal is mainly acquired by the acquisition method of the signal of telecommunication by common transformer or
Being gathered by electric resistance partial pressure, its acquisition precision is the most poor.Simultaneously as the disappearance of synchronizing signal, cause multiple independent adopting
There is bigger error in the data that acquisition means collects, for the on-line monitoring, online checking system of electric power meter, general
Logical data acquisition unit can not meet far away the requirement of system accuracy.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of high-precise synchronization harvester, the present invention is reasonable in design, solves
Determine signal stationary problem, substantially increased the accuracy gathering signal.
For reaching above-mentioned purpose, a kind of high-precise synchronization harvester of the present invention, including:
Voltage transformer summation current transformer, is respectively used to adopt the voltage signal before accessing ammeter and current signal
Sample；
Gearshift control and Signal-regulated kinase, carried out for the signal having sampled voltage transformer summation current transformer
Automatic growth control, filter and amplify；
A/D chip, for receiving the signal after gearshift control and Signal-regulated kinase process, and carries out modulus to it and turns
Change, the digital signal converted is sent to FPGA process；
FPGA, for receiving digital signal, the electric energy meter pulse signal of A/D chip transmission and being copied by RS485 interface
The electric energy meter internal information read, is assigned to time scale information by the signal received and information, and FPGA is additionally operable to receive time reference letter
Number communicate with ARM and communicate with data centralised arrangement；Data after described FPGA will process are sent to ARM, ARM
Data after FPGA process being completed are packaged into ethernet frame form, are then returned to the number that ARM has been encapsulated by FPGA, FPGA
It is sent to data centralised arrangement according to bag；
Described data centralised arrangement is used for and background server communication, sends the data collected to background server.
Also include receiving collection data and the DDR3 of information for caching FPGA.
Also include providing the power module of power supply needed for it for modules all in harvester, power module directly with
The external power source of AC220V connects.
The packet that ARM has been encapsulated by described FPGA by optical switch is sent to data centralised arrangement.
Also include constant-temperature crystal oscillator that is punctual for FPGA and that be connected with FPGA.
Described FPGA is by optical switch and IEEE1588 time reference communications reception external time reference signal.
Compared with prior art, the present invention at least has a following useful technique effect, the signal that the present invention gathers with
Time scale information, it is achieved that the synchronization high precision collecting of the signal of telecommunication, by using voltage, current transformer, it is ensured that adopting of device
Sample precision, ensure that forceful electric power and light current are completely separable simultaneously, greatly reduces external electromagnetic interference, improve device reliability and
Safety；And these information are possible not only to apply in real time on foreground, it is also possible to compressed package sent carries out various answering to backstage
With and analyze.
Further, also include constant-temperature crystal oscillator that is punctual for FPGA and that be connected with FPGA, for the punctual control of FPGA,
Improve the punctual ability of harvester so that it is do not affected by ambient temperature, it is ensured that the stability of whole harvester.
Further, described FPGA is believed with IEEE1588 time reference communications reception external time reference by optical switch
Number, it is ensured that the synchronization high precision collecting of harvester and high efficiency of transmission, networking facilitates precision high, can effectively save and be routed to
This, when can support multiple pairs terminal simultaneously pair time.
Further, also include receiving collection data and the DDR3 of information for caching FPGA, be used for caching FPGA and connect
The collection data received and information；Guarantee that the acquired original data that FPGA fails to process in time are not lost.
Accompanying drawing explanation
Fig. 1 is present configuration block diagram.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of high-precise synchronization harvester, provide power supply needed for it including for modules all in harvester
Power module, power module is directly connected with the external power source that voltage is AC220V, for accessing the letter of the voltage before ammeter
Number and current signal carry out the voltage transformer summation current transformer sampled, for voltage transformer summation current transformer is sampled
Complete signal carries out automatic growth control, filter and the gearshift control that amplifies and Signal-regulated kinase；Also include A/D chip,
Its signal after receiving gearshift control and Signal-regulated kinase process, and it is carried out analog digital conversion, by convert
Digital signal is sent to FPGA process；FPGA for receive A/D chip transmit digital signal, electric energy meter pulse signal with
And by the electric energy meter internal information of RS485 interface copy reading, the signal received and information being assigned to time scale information, FPGA also uses
Communicating with ARM in receiving time reference signal and communicate with data centralised arrangement, FPGA is also associated with for caching
FPGA receives and gathers data and the DDR3 of information and for constant-temperature crystal oscillator punctual for FPGA, FPGA by optical switch with
IEEE1588 time reference communications reception external time reference signal；Data after described FPGA will process are sent to ARM, ARM
Data after FPGA process being completed are packaged into ethernet frame form, are then returned to FPGA, FPGA by optical switch by ARM
The packet encapsulated is sent to data centralised arrangement；Described data centralised arrangement is used for and background server communication, will adopt
The data that collection arrives send to background server.
Operation principle of the present invention is as follows:
As it is shown in figure 1, the present invention is mainly used to gather the voltage and current signal before accessing electric energy meter, electric energy meter pulse letter
Number and by RS485 interface copy reading electric energy meter internal information；Wherein, the voltage signal before electric energy meter is accessed through mutual induction of voltage
Device is sampled, and accesses the current signal before ammeter and samples through current transformer, voltage transformer summation current transformer
The signal sampled first is delivered to signal gearshift control and Signal-regulated kinase carries out automatic growth control, filters and amplify,
Giving A/D chip the most again and carry out analog digital conversion, the digital signal that A/D chip converts delivers to FPGA process again；
Electric energy meter is connected to the FPGA of harvester by RS485 interface, and FPGA is copy reading electric energy meter by the way of monitoring
Internal information；The pulse signal of electric energy meter is connected to the FPGA of harvester by pulse interface, and pulse signal includes meritorious arteries and veins
Rush signal and idle pulse signal；
Be connected with FPGA also has constant-temperature crystal oscillator, ARM and DDR3, and constant-temperature crystal oscillator is mainly used to provide punctual clock so that it is
Not affected by ambient temperature, it is ensured that the stability of whole harvester, ARM is mainly used to read the number that FPGA process completes
According to, and these data are packaged into ethernet frame form, are then returned to FPGA；DDR3 is mainly used to cache adopting of receiving of FPGA
Collection data and information；Guarantee that the acquired original data that FPGA fails to process in time are not lost；
The present invention is powered by external power source, and supply voltage is AC220V, and external power source is directly and in data acquisition unit
Switch power module be connected, switch power module provides its required power supply for whole harvester modules.
The present invention can accurately capture the pulse signal of ammeter, the most also gathers electric current, voltage letter with 1-100KHz speed
Breath, and by the data of band time scale information with being sent to device in data set, obtains the voltage of collection point, electric current, frequently by calculating
The information such as rate, phase place, power.This device uses the design of integrated module formula structure, uses mutual inductor sample to guarantee that strong and weak electricity is complete
The most separately, external electromagnetic interference can be greatly reduced, improve reliability and safety.Use multi-layer PCB so that power supply, Qiang Xin
Number and weak signal isolate, improve equipment capacity of resisting disturbance.
Meanwhile, Highgrade integration, volume is little, lightweight, and installs very simple, can apply and compare in various spaces
Narrow and small ammeter screen cabinet.
Claims (6)
1. a high-precise synchronization harvester, it is characterised in that including:
Voltage transformer summation current transformer, is respectively used to sample the voltage signal before accessing ammeter and current signal；
Gearshift control and Signal-regulated kinase, carried out for the signal having sampled voltage transformer summation current transformer automatically
Gain control, filter and amplify；
A/D chip, the signal after receiving gearshift control and Signal-regulated kinase process, and it is carried out analog digital conversion,
The digital signal converted is sent to FPGA process；
FPGA, for receiving the digital signal of A/D chip transmission, electric energy meter pulse signal and passing through RS485 interface copy reading
Electric energy meter internal information, is assigned to time scale information by the signal received and information, FPGA be additionally operable to receive time reference signal and
ARM communicates and communicates with data centralised arrangement；Data after described FPGA will process are sent to ARM, and ARM is by FPGA
Data after having processed are packaged into ethernet frame form, are then returned to the packet biography that ARM has been encapsulated by FPGA, FPGA
Deliver to data centralised arrangement；
Described data centralised arrangement is used for and background server communication, sends the data collected to background server.
A kind of high-precise synchronization harvester the most according to claim 1, it is characterised in that also include for caching FPGA
Receive collection data and the DDR3 of information.
A kind of high-precise synchronization harvester the most according to claim 1, it is characterised in that also include in harvester
All modules provide the power module of power supply needed for it, and power module is directly connected with the external power source of AC220V.
A kind of high-precise synchronization harvester the most according to claim 1, it is characterised in that described FPGA is exchanged by light
The packet that ARM has been encapsulated by machine is sent to data centralised arrangement.
A kind of high-precise synchronization harvester the most according to claim 1, it is characterised in that also include keeping time for FPGA
And the constant-temperature crystal oscillator being connected with FPGA.
A kind of high-precise synchronization harvester the most according to claim 1, it is characterised in that described FPGA is exchanged by light
Machine and IEEE1588 time reference communications reception external time reference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610876614.5A CN106291204A (en) | 2016-09-30 | 2016-09-30 | A kind of high-precise synchronization harvester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610876614.5A CN106291204A (en) | 2016-09-30 | 2016-09-30 | A kind of high-precise synchronization harvester |
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| CN106291204A true CN106291204A (en) | 2017-01-04 |
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| CN201610876614.5A Pending CN106291204A (en) | 2016-09-30 | 2016-09-30 | A kind of high-precise synchronization harvester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037261A (en) * | 2017-05-03 | 2017-08-11 | 国网四川省电力公司电力科学研究院 | 0.2S level three-phase electric energy meters and its measuring method based on wide area synchro measure |
| CN110031685A (en) * | 2019-05-22 | 2019-07-19 | 成都思鸿维科技有限责任公司 | A kind of inductance measurement system and method for coil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155545A (en) * | 2014-07-28 | 2014-11-19 | 广西电网公司电力科学研究院 | Multichannel analog quantity acquisition module based on GPS signals |
| CN205139355U (en) * | 2015-11-16 | 2016-04-06 | 国网江西省电力公司南昌供电分公司 | Leading collection system suitable for system is compared to total mark electric quantity |
| CN206057467U (en) * | 2016-09-30 | 2017-03-29 | 千江（上海）信息科技有限公司 | A kind of high-precise synchronization harvester |
-
2016
- 2016-09-30 CN CN201610876614.5A patent/CN106291204A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155545A (en) * | 2014-07-28 | 2014-11-19 | 广西电网公司电力科学研究院 | Multichannel analog quantity acquisition module based on GPS signals |
| CN205139355U (en) * | 2015-11-16 | 2016-04-06 | 国网江西省电力公司南昌供电分公司 | Leading collection system suitable for system is compared to total mark electric quantity |
| CN206057467U (en) * | 2016-09-30 | 2017-03-29 | 千江（上海）信息科技有限公司 | A kind of high-precise synchronization harvester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037261A (en) * | 2017-05-03 | 2017-08-11 | 国网四川省电力公司电力科学研究院 | 0.2S level three-phase electric energy meters and its measuring method based on wide area synchro measure |
| CN110031685A (en) * | 2019-05-22 | 2019-07-19 | 成都思鸿维科技有限责任公司 | A kind of inductance measurement system and method for coil |
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Effective date of registration: 20190726 Address after: 710065 West Electronic Community A Block C 309, 181 Taibai South Road, Xi'an High-tech Zone, Shaanxi Province Applicant after: QIANYUE (XI'AN) INFORMATION TECHNOLOGY Co.,Ltd. Address before: Jinshan District Fengjing town Shanghai City 38 201500 Cao Lilu Lane 19, room 1295 Applicant before: QIANJIANG (SHANGHAI) INFORMATION TECHNOLOGY CO.,LTD. |
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Application publication date: 20170104 |
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