CN201335851Y - Ammeter data acquisition device - Google Patents

Ammeter data acquisition device Download PDF

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Publication number
CN201335851Y
CN201335851Y CNU2009200382547U CN200920038254U CN201335851Y CN 201335851 Y CN201335851 Y CN 201335851Y CN U2009200382547 U CNU2009200382547 U CN U2009200382547U CN 200920038254 U CN200920038254 U CN 200920038254U CN 201335851 Y CN201335851 Y CN 201335851Y
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CN
China
Prior art keywords
circuit
data
signal
ammeter
resistance
Prior art date
Application number
CNU2009200382547U
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Chinese (zh)
Inventor
吴宝财
吴晓龙
朱兴银
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江苏联宏自动化系统工程有限公司
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Priority to CNU2009200382547U priority Critical patent/CN201335851Y/en
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Publication of CN201335851Y publication Critical patent/CN201335851Y/en

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Abstract

An ammeter data acquisition device includes a pulse sampling circuit, an RS485 reading circuit, an Lonworks intelligent transceiver module, a carrier communication coupled circuit and a CPU, wherein the data signal input terminals of the pulse sampling circuit and the RS485 reading circuit, as the signal input of the data acquisition device, are connected with the corresponding data signal input terminal of the ammeter, of which the data is acquired; the data signal output terminals of the pulse sampling circuit and the RS485 reading circuit are connected with the corresponding data signal input terminal of the CPU; the data exchange signal terminal of the CPU is connected with the data exchange signal terminal of the Lonworks intelligent transceiver module; and the other data exchange signal terminal of the Lonworks intelligent transceiver module is connected with the data exchange signal terminal of the carrier communication coupled circuit. The utility model has the advantages of remote communication distance, data reliability and strong anti-interference ability.

Description

The ammeter data harvester
Technical field
The utility model relates to a kind of data collector, especially a kind of carrier communication of adopting the Lonworks technology, the ammeter data collector that communication distance is far away, reliability is high, specifically a kind of ammeter data harvester.
Background technology
Along with popularizing and popularization that Every household has an ammeter reads the ammeter directly of electricity consumption intelligent electric meter, development automatic data logging technology is to improve the needs of management of power use level, also is the inexorable trend that network and computer technology are used.For a change traditional manual metering mode realizes all trades and professions electricity consumption user is comprised that it is automatic data logging that the energy data of residential building user electric energy meter is gathered automatically, needs a kind of device that can gather the electric energy measurement data of promptly copying and accepting a plurality of electric energy meters automatically.This data collector will be gathered the electric quantity data of a plurality of electric energy meters, store and be uploaded to other data concentrator of upper level.The electric energy measurement data that it relates to electric energy meter is the pulse output of ammeter or the collection of 485 signals of communication, the processing of data and storage and to the communication of upper level.
The electric energy measurement data harvester of this present class electric energy meter, its communication modes adopts power carrier communication substantially.The existing line of electric force of this communication modes utilization does not need to lay the dedicated telephone line cable, less investment, and construction is simple, but because the line of electric force load is very complicated, also very complicated for the influence of power carrier communication, communication is unreliable and communication distance short.Therefore, existing electric energy meter data acquisition device can not reach the requirement that communication distance is far away, data are reliable, antijamming capability is strong, can not satisfy the use needs of existing equipment.
Summary of the invention
The purpose of this utility model is to be subjected to the influence of power carrier communication big at existing electric energy measurement data harvester, the short problem of unreliable and communication distance of communicating by letter proposes the ammeter data harvester that a kind of communication distance is far away, data are reliable, antijamming capability is strong.
The technical solution of the utility model is:
A kind of ammeter data harvester, it is characterized in that it comprises the impulse sampling circuit, RS485 meter reading circuit, Lonworks smart transceiver module, carrier communication coupled circuit and CPU, the data-signal input end of impulse sampling circuit and RS485 meter reading circuit connects by the respective signal output terminal of the ammeter of image data as the signal input of data collector, the corresponding data signal input part of the data-signal output termination CPU of impulse sampling circuit and RS485 meter reading circuit, the exchanges data signal end of the exchanges data signal termination Lonworks smart transceiver module of CPU, another exchanges data signal end of Lonworks smart transceiver module is carried the exchanges data signal end of wave communication coupled circuit, and the carrier signal end of carrier communication coupled circuit is by the live wire L of mains supply, zero line N links to each other with the back level data concentrator of ammeter data harvester.
The utility model also comprises power circuit, power-fail detection circuit, the infrared-ray communication circuit, JTAG downloads debug circuit and real-time clock power backup circuit, power circuit provides the corresponding work power supply for the ammeter data harvester, power-fail detection circuit connects the respective signal output terminal of the power circuit of ammeter data harvester as the signal input end of ammeter data harvester, the control signal output ends of power-fail detection circuit connects the signal input end of CPU, the data-signal end of infrared-ray communication circuit and outside infrared facility wireless connections, another data-signal end of infrared-ray communication circuit links to each other with the corresponding data signal end of CPU, the debug signal end that JTAG downloads debug circuit links to each other with the debug signal end of CPU, and the signal end of real-time clock power backup circuit links to each other with the input/output terminal of CPU.
Impulse sampling circuit of the present utility model comprises resistance R 400, R300, R200, capacitor C 200, C300, diode D200 and photoelectrical coupler U100, one end of resistance R 400 connects by the signal output part of the ammeter of image data as the signal input part of impulse sampling circuit, another signal output part of ammeter connects the respective signal output terminal of the power circuit of ammeter data harvester, the other end of resistance R 400 is by parallel resistance R300, diode D200 and capacitor C 300 ground connection, the negative electrode of diode D200 connects the signal input part of photoelectrical coupler, another signal input part ground connection of photoelectrical coupler, the signal output part of photoelectrical coupler is by parallel resistance R200 and capacitor C 200 ground connection, and the signal output part of photoelectrical coupler connects the corresponding data signal input part of CPU as the output of impulse sampling circuit.
RS485 meter reading circuit of the present utility model comprises resistance R 7, R8, R21-25, capacitor C 13, photoelectrical coupler U21, U23 and RS485 chip for driving.
Carrier communication coupled circuit of the present utility model comprises by coupling transformer TR2, capacitor C 36, the Hi-pass filter that resistance R 77 constitutes, capacitor C 35, diode D9, D10, inductance L 7, L8 and resistance R V1, the two ends of resistance R 77 meet the live wire L of mains supply end as the ac supply signal input of carrier communication coupled circuit, zero line N, one end of resistance R 77 connects primary coil one end of transformer TR2 by capacitor C 36, the other end of the primary coil of another termination transformer TR2 of resistance R 77, the secondary coil of transformer TR2 and connecting resistance RV1, one end ground connection of the secondary coil of transformer TR2, the earth terminal of the secondary coil of transformer TR2 and non-earth terminal connect inductance L 7 respectively, the end of L8, the other end of inductance L 7 links to each other with the respective signal end of Lonworks smart transceiver module, the other end of inductance L 8 is by capacitor C 35 and diode D10 ground connection, the negative electrode of diode D10 links to each other with the anode of diode D9, the negative electrode of diode D9 links to each other the negative electrode of diode D10 with the respective signal output terminal of power module, the tie point of the anode of D9 and capacitor C 35 connects the respective signal end of Lonworks smart transceiver module.
The beneficial effects of the utility model:
1, the utility model adopts the Lonworks PLC technology, and the arrowband double frequency is the two carrier communications of low-voltage power line, and it is to transmit on the mains supply that signal can directly be coupling in the AC220V line of electric force, need not to lay private cable, has saved cost.
2, Lonworks smart transceiver module of the present utility model has the function of automatic route, has improved communication distance.
3, the utility model supports pulse to check meter and the 485 two kinds of interfaces of checking meter simultaneously, supports 12 tunnel pulse ammeters and 32 tunnel 485 ammeters, can satisfy the communication needs of distinct device.
4, the integrated real-time clock RTC of CPU of the present utility model function can be supported 4 chargings at times.
5, the utlity model has the power down protection circuit, assurance power failure data are not lost, and under the state that has a power failure, standby lithium battery can be for RTC work more than one month.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is one of circuit diagram of the present utility model.
Fig. 3 is two of a circuit diagram of the present utility model.
Fig. 4 is three of a circuit diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind of ammeter data harvester, it comprises the impulse sampling circuit, RS485 meter reading circuit, Lonworks smart transceiver module (model can be PL-3150), carrier communication coupled circuit and CPU (model can be Atmega128), the data-signal input end of impulse sampling circuit and RS485 meter reading circuit connects by the respective signal output terminal of the ammeter of image data as the signal input of data collector, the corresponding data signal input part of the data-signal output termination CPU of impulse sampling circuit and RS485 meter reading circuit, the exchanges data signal end of the exchanges data signal termination Lonworks smart transceiver module of CPU, another exchanges data signal end of Lonworks smart transceiver module is carried the exchanges data signal end of wave communication coupled circuit, and the carrier signal end of carrier communication coupled circuit is by the live wire L of mains supply, zero line N links to each other with the back level data concentrator of ammeter data harvester.
The utility model also comprises power circuit, power-fail detection circuit, the infrared-ray communication circuit, JTAG downloads debug circuit and real-time clock power backup circuit, power circuit provides the corresponding work power supply for the ammeter data harvester, power-fail detection circuit connects the respective signal output terminal of the power circuit of ammeter data harvester as the signal input end of ammeter data harvester, the control signal output ends of power-fail detection circuit connects the signal input end of CPU, the data-signal end of infrared-ray communication circuit and outside infrared facility wireless connections, another data-signal end of infrared-ray communication circuit links to each other with the corresponding data signal end of CPU, the debug signal end that JTAG downloads debug circuit links to each other with the debug signal end of CPU, and the signal end of real-time clock power backup circuit links to each other with the input/output terminal of CPU.
As shown in Figure 2, impulse sampling circuit of the present utility model comprises resistance R 400, R300, R200, capacitor C 200, C300, diode D200 and photoelectrical coupler U100, one end of resistance R 400 connects by the signal output part of the ammeter of image data as the signal input part of impulse sampling circuit, another signal output part of ammeter connects the respective signal output terminal of the power circuit of ammeter data harvester, the other end of resistance R 400 is by parallel resistance R300, diode D200 and capacitor C 300 ground connection, the negative electrode of diode D200 connects the signal input part of photoelectrical coupler, another signal input part ground connection of photoelectrical coupler, the signal output part of photoelectrical coupler is by parallel resistance R200 and capacitor C 200 ground connection, and the signal output part of photoelectrical coupler connects the corresponding data signal input part of CPU as the output of impulse sampling circuit.
As shown in Figure 2, RS485 meter reading circuit of the present utility model comprises resistance R 7, R8, R21-25, capacitor C 13, photoelectrical coupler U21, U23 and RS485 chip for driving.
As shown in Figure 2, carrier communication coupled circuit of the present utility model comprises by coupling transformer TR2, capacitor C 36, the Hi-pass filter that resistance R 77 constitutes, capacitor C 35, diode D9, D10, inductance L 7, L8 and resistance R V1, the two ends of resistance R 77 meet the live wire L of mains supply end as the ac supply signal input of carrier communication coupled circuit, zero line N, one end of resistance R 77 connects primary coil one end of transformer TR2 by capacitor C 36, the other end of the primary coil of another termination transformer TR2 of resistance R 77, the secondary coil of transformer TR2 and connecting resistance RV1, one end ground connection of the secondary coil of transformer TR2, the earth terminal of the secondary coil of transformer TR2 and non-earth terminal connect inductance L 7 respectively, the end of L8, the other end of inductance L 7 links to each other with the respective signal end of Lonworks smart transceiver module, the other end of inductance L 8 is by capacitor C 35 and diode D10 ground connection, the negative electrode of diode D10 links to each other with the anode of diode D9, the negative electrode of diode D9 links to each other the negative electrode of diode D10 with the respective signal output terminal of power module, the tie point of the anode of D9 and capacitor C 35 connects the respective signal end of Lonworks smart transceiver module.
LonWorks is that fieldbus is the communication system that connects digital, two-way, the multistation of smart devices and automated system.Mainly solve digital communication between the field apparatus such as intelligent instrumentation, controller, topworks of industry spot and the information problem of transmission between these field control equipment and the advanced control system (ACS).The multiple communication media of LonWorks Control Network technical support, communication module of the present utility model adopt the LonWorks power line communication to communicate by letter with the LonWorks twisted-pair feeder; LonWorks Control Network technology is a kind of complete, standard-sized sheet is put, interoperability is strong, the reliability height, mature distributed computing Control Network technology, the core of LonWorks Control Network technology is the LonTalk communications protocol, this agreement provides a whole set of perfect communication service, make application program in the device can be on the net send and receive message and need not know network topology to other devices, title, the function of address or other devices, all adopt the product of LonWorks technology all is to follow the LonTalk communications protocol, can directly carry out exchanges data and solve the otherness of the similar RS485 interface of product of different manufacturers because of the self-editing communication protocol existence of need, open with net, compatible, the technical matters of interoperability difference.
During concrete enforcement:
The utility model comprises power supply, impulse sampling circuit, RS485 meter reading circuit, carrier communication coupled circuit, power-fail detection circuit, CPU, infrared communication circuit, key circuit, power supply indication and communication indicating circuit.Infrared communication is linked the serial ports of CPU.Power circuit provides the DC voltage-stabilizing source circuit of device operation, employing be the typical circuit that becomes step-down, rectification, voltage stabilizing, filtering.Every road pulse signal is incorporated into the impulse sampling circuit by terminal, passes to the IO mouth of CPU (model can be Atmega128) again.RS485 ammeter signal is to be incorporated into RS485 meter reading circuit by terminal, passes on the serial ports of CPU (model can be Atmega128) again.Power carrier signal directly is incorporated into the carrier communication coupled circuit by the AC220V power lead, passes to Lonworks smart transceiver module again, and Lonworks smart transceiver module is linked on the parallel port of CPU by the parallel port again.Power-fail detection circuit detects by the output to power supply on the mainboard and passes on the CPU external interrupt pin.
Lonworks smart transceiver module is with a Neuron processor core and the system-on-a-chip that power line transceiver integrates, the arrowband power line transceiver, one that includes a high reliability is used to run application and 8 neuron processor cores, chip external memory, the modulation of distinctive double frequency of managing network communication is that the two carrier characteristics of low pressure can be selected second standby communication frequency automatically after predominant frequency is by noise jamming, the forward error correction FEC algorithm that hangs down expense is that FEC moves all the time, and can not reduces active data speed.Comprise that also digital signal processing, noise removing and distortion checking algorithm promptly corrected the various obstructions that the signal transmission is subjected to, this design that comprises transient noise, continuant audio-frequency noise and phase distortion, high output, low distortion external amplifier can carry the 1A/2A peak-to-peak value to low-impedance load.
The utility model embedded software comprises two parts, i.e. the network communication program of function program on the CPU and Lonworks smart transceiver module.The function program programming is in CPU (model can be ATmega128) chip internal, be responsible for the counting of pulse, read 485 ammeter electric weight, power down is to the storage of electric weight, and the function that the communication command of sending by infrared communication serial ports and smart transceiver module is made an explanation or the like; In the storer of network communication program burn writing in the smart transceiver module of Lonworks, be responsible for the communication of line of electric force.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.

Claims (5)

1, a kind of ammeter data harvester, it is characterized in that it comprises the impulse sampling circuit, RS485 meter reading circuit, Lonworks smart transceiver module, carrier communication coupled circuit and CPU, the data-signal input end of impulse sampling circuit and RS485 meter reading circuit connects by the respective signal output terminal of the ammeter of image data as the signal input of data collector, the corresponding data signal input part of the data-signal output termination CPU of impulse sampling circuit and RS485 meter reading circuit, the exchanges data signal end of the exchanges data signal termination Lonworks smart transceiver module of CPU, another exchanges data signal end of Lonworks smart transceiver module is carried the exchanges data signal end of wave communication coupled circuit, and the carrier signal end of carrier communication coupled circuit is by the live wire L of mains supply, zero line N links to each other with the back level data concentrator of ammeter data harvester.
2, ammeter data harvester according to claim 1, it is characterized in that it also comprises power circuit, power-fail detection circuit, the infrared-ray communication circuit, JTAG downloads debug circuit and real-time clock power backup circuit, power circuit provides the corresponding work power supply for the ammeter data harvester, power-fail detection circuit connects the respective signal output terminal of the power circuit of ammeter data harvester as the signal input end of ammeter data harvester, the control signal output ends of power-fail detection circuit connects the signal input end of CPU, the data-signal end of infrared-ray communication circuit and outside infrared facility wireless connections, another data-signal end of infrared-ray communication circuit links to each other with the corresponding data signal end of CPU, the debug signal end that JTAG downloads debug circuit links to each other with the debug signal end of CPU, and the signal end of real-time clock power backup circuit links to each other with the input/output terminal of CPU.
3, ammeter data harvester according to claim 1, it is characterized in that described impulse sampling circuit comprises resistance R 400, R300, R200, capacitor C 200, C300, diode D200 and photoelectrical coupler U100, one end of resistance R 400 connects by the signal output part of the ammeter of image data as the signal input part of impulse sampling circuit, another signal output part of ammeter connects the respective signal output terminal of the power circuit of ammeter data harvester, the other end of resistance R 400 is by parallel resistance R300, diode D200 and capacitor C 300 ground connection, the negative electrode of diode D200 connects the signal input part of photoelectrical coupler, another signal input part ground connection of photoelectrical coupler, the signal output part of photoelectrical coupler is by parallel resistance R200 and capacitor C 200 ground connection, and the signal output part of photoelectrical coupler connects the corresponding data signal input part of CPU as the output of impulse sampling circuit.
4, ammeter data harvester according to claim 1 is characterized in that described RS485 meter reading circuit comprises resistance R 7, R8, R21-25, capacitor C 13, photoelectrical coupler U21, U23 and RS485 chip for driving.
5, ammeter data harvester according to claim 1, it is characterized in that described carrier communication coupled circuit comprises by coupling transformer TR2, capacitor C 36, the Hi-pass filter that resistance R 77 constitutes, capacitor C 35, diode D9, D10, inductance L 7, L8 and resistance R V1, the two ends of resistance R 77 meet the live wire L of mains supply end as the ac supply signal input of carrier communication coupled circuit, zero line N, one end of resistance R 77 connects primary coil one end of transformer TR2 by capacitor C 36, the other end of the primary coil of another termination transformer TR2 of resistance R 77, the secondary coil of transformer TR2 and connecting resistance RV1, one end ground connection of the secondary coil of transformer TR2, the earth terminal of the secondary coil of transformer TR2 and non-earth terminal connect inductance L 7 respectively, the end of L8, the other end of inductance L 7 links to each other with the respective signal end of Lonworks smart transceiver module, the other end of inductance L 8 is by capacitor C 35 and diode D10 ground connection, the negative electrode of diode D10 links to each other with the anode of diode D9, the negative electrode of diode D9 links to each other the negative electrode of diode D10 with the respective signal output terminal of power module, the tie point of the anode of D9 and capacitor C 35 connects the respective signal end of Lonworks smart transceiver module.
CNU2009200382547U 2009-01-20 2009-01-20 Ammeter data acquisition device CN201335851Y (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900760A (en) * 2010-06-25 2010-12-01 洪金文 Electricity meter and power source applicable to same
CN102024321A (en) * 2010-12-15 2011-04-20 河南省电力公司许昌供电公司 Novel electric energy pulse collector
CN102339523A (en) * 2010-07-20 2012-02-01 上海资和通信科技有限公司 Ammeter data collecting device
CN102711214A (en) * 2012-06-26 2012-10-03 沈阳时尚实业有限公司 Wireless intelligent concentrator based on multi-channel communication dual-frequency networking and networking method of wireless intelligent concentrator
CN103312367A (en) * 2013-06-17 2013-09-18 洛阳愿景科技有限公司 Dual-mode communication chip
CN104020757A (en) * 2014-05-23 2014-09-03 无锡市崇安区科技创业服务中心 Method for detecting input signal of microcontroller
CN105634138A (en) * 2016-03-18 2016-06-01 江苏联宏自动化系统工程有限公司 Multifunctional three-phase electric power monitoring apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900760A (en) * 2010-06-25 2010-12-01 洪金文 Electricity meter and power source applicable to same
CN101900760B (en) * 2010-06-25 2012-02-15 洪金文 Electricity meter and power source applicable to same
CN102339523A (en) * 2010-07-20 2012-02-01 上海资和通信科技有限公司 Ammeter data collecting device
CN102024321A (en) * 2010-12-15 2011-04-20 河南省电力公司许昌供电公司 Novel electric energy pulse collector
CN102711214A (en) * 2012-06-26 2012-10-03 沈阳时尚实业有限公司 Wireless intelligent concentrator based on multi-channel communication dual-frequency networking and networking method of wireless intelligent concentrator
CN102711214B (en) * 2012-06-26 2014-08-13 沈阳时尚实业有限公司 Wireless intelligent concentrator based on multi-channel communication dual-frequency networking and networking method of wireless intelligent concentrator
CN103312367A (en) * 2013-06-17 2013-09-18 洛阳愿景科技有限公司 Dual-mode communication chip
CN103312367B (en) * 2013-06-17 2015-08-26 洛阳愿景科技有限公司 A kind of dual-mode communication chip
CN104020757A (en) * 2014-05-23 2014-09-03 无锡市崇安区科技创业服务中心 Method for detecting input signal of microcontroller
CN105634138A (en) * 2016-03-18 2016-06-01 江苏联宏自动化系统工程有限公司 Multifunctional three-phase electric power monitoring apparatus

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Granted publication date: 20091028

Termination date: 20130120