CN201876480U - Wideband/narrowband integrated meter-reading device - Google Patents

Wideband/narrowband integrated meter-reading device Download PDF

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Publication number
CN201876480U
CN201876480U CN200920351281XU CN200920351281U CN201876480U CN 201876480 U CN201876480 U CN 201876480U CN 200920351281X U CN200920351281X U CN 200920351281XU CN 200920351281 U CN200920351281 U CN 200920351281U CN 201876480 U CN201876480 U CN 201876480U
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CN
China
Prior art keywords
circuit
power line
signal
carrier communication
module
Prior art date
Application number
CN200920351281XU
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Chinese (zh)
Inventor
牟景旭
刘栋炼
欧清海
于永滨
王英男
刘承轩
孙志缨
任哲
Original Assignee
深圳市国电科技通信有限公司
辽宁省电力有限公司沈阳供电公司
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Priority to CN200920351281XU priority Critical patent/CN201876480U/en
Application granted granted Critical
Publication of CN201876480U publication Critical patent/CN201876480U/en

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Abstract

The utility model relates to a wideband/narrowband integrated meter-reading device which comprises a wideband power line carrier communication module, a narrowband power line carrier communication module, a meter-reading/maintaining RS485 interface and an infrared interface. The device can manage a carrier electric energy meter or an electric energy meter with the RS485 interface, is mainly characterized in that the upstream data and the downstream data of a collector can be transmitted through the power line carrier communication, and the meter-reading device can perform the mete-reading management on the electric energy meters with different communication interfaces, so that the complexity of a meter-reading system is reduced, and the popularity is improved. Power lines are used as the communication carriers of an upstream passageway and a downstream passageway, so that plenty of additional wiring can be eliminated, the device cannot be artificially damaged, and the device is less susceptible to the lightning stroke and the overvoltage.

Description

The integrated kilowatt meter recorder of wide and narrow strip
[technical field]
The utility model relates to kilowatt meter recorder, relates to the integrated kilowatt meter recorder of a kind of wide and narrow strip signal specifically.
[background technology]
In the existing kilowatt meter recorder, use carrier communication usually ammeter being copied and accepted management (down going channel), or the RS485 bus; Uplink communication is by broadband power line communication, RS485 bus or ethernet communication.The shortcoming of RS485 and Ethernet has: construction installation work amount is big, and netting twine is subject to artificial destruction.After circuit damaged, the trouble spot is easy-to-search not, be subject to thunderbolt and superpotential influence, so we proposed the integrated kilowatt meter recorder of wide and narrow strip.
[summary of the invention]
The technical problems to be solved in the utility model provides and a kind ofly by RS485 module and arrowband Power Line Carrier Communication Module carrier electric energy meter is managed, also the integrated kilowatt meter recorder of wide and narrow strip that can manage the electric energy meter of RS485 interface.
For solving the problems of the technologies described above, motherboard circuit of the present utility model is connected to form successively by signal access port, CPU central controller and data storage cell, described signal access port comprises IRDA module, RS485 module, arrowband Power Line Carrier Communication Module, be connected with the CPU central controller respectively, wherein the RS485 module is connected with the RS485 electric energy meter, and line of electric force is connected on arrowband electric energy meter and the arrowband Power Line Carrier Communication Module; The CPU central controller also is connected with the broadband power line carrier communication module, and the broadband power line carrier communication module is connected on the concentrator by signal coupler again; Described IRDA module connects wireless communicator by radio signal;
Below technique scheme is described further: described arrowband Power Line Carrier Communication Module has low-voltage power line and wireless communicator received signal, wherein low-voltage power line is connected to the transmitting-receiving commutation circuit by signal coupling circuit, wireless communicator is directly connected to the IRDA module, the transmitting-receiving commutation circuit sends to the carrier communication chip with signal by filtering circuit and power amplification circuit and handles, and the former road of the signal after will handling sends, and wireless communicator is connected with the CPU central controller by the IrDA module;
Described broadband power line carrier communication module comprises signal coupler, signal coupler wherein has an interface to connect the CPU central controller, also have digital signal interface and analog signal interface, analog signal interface sends to converter with the signal that the CPU central controller transmits by the smoothed filter circuit that connects, digital signal interface is directly connected to parallel operation, receive the digital signal of storage, converter also connects reverse sawtooth filtering, converter divides two-way to be connected the transmitting-receiving commutation circuit with filtering circuit by power amplification circuit, is connected to concentrator by signal coupling circuit again.
The utility model can manage carrier electric energy meter, also can the electric energy meter of RS485 interface be managed, its maximum characteristics are to realize that the upstream data of collector and downlink data all pass through power line carrier communication, can copy and accept the equipment of management to the electric energy meter of different communication interface, thereby the complicacy of kilowatt meter reading-out system is reduced, and versatility improves.Because the communications carrier of its data feedback channel and down going channel all be a line of electric force, so it has saved a large amount of extra wirings, and the artificial destruction of not holding is not subject to be struck by lightning and superpotential influence simultaneously yet.
[description of drawings]
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the utility model internal module block diagram;
Fig. 2 is the utility model arrowband Power Line Carrier Communication Module structural drawing;
Fig. 3 is the utility model broadband power line communication modular structure figure;
Fig. 4 is the utility model CPU central controller, check meter RS485 interface and infrared interface part synoptic diagram;
Fig. 5 is the utility model broadband power line communication CPU central controller synoptic diagram;
Fig. 6 is the reception and the transtation mission circuit synoptic diagram of the utility model broadband power line communication;
Fig. 7 is the reception/transmission commutation circuit synoptic diagram of the utility model broadband power line communication;
Fig. 8 is analog front-end chip, transmitting terminal filtering circuit and the Linear Driving circuit diagram of the utility model arrowband power line carrier communication;
Fig. 9 is the utility model arrowband power line carrier communication CPU central controller synoptic diagram;
Figure 10 is the utility model arrowband power line communication network diagram that accepts filter;
Figure 11 is the utility model arrowband power line communication coupler circuit synoptic diagram.
[embodiment]
As shown in Figure 1, motherboard circuit of the present utility model is connected to form successively by signal access port, CPU central controller 1 and data storage cell 5, described signal access port comprises IRDA module 4, RS485 module 3, arrowband Power Line Carrier Communication Module 6, be connected with CPU central controller 1 respectively, wherein RS485 module 3 is connected with RS485 electric energy meter 8, and line of electric force is connected on arrowband electric energy meter 9 and the arrowband Power Line Carrier Communication Module 6; CPU central controller 1 also is connected with broadband power line carrier communication module 2, and broadband power line carrier communication module 2 is connected on the concentrator 29 by signal coupler 28 again; Described IRDA module 4 connects wireless communicator 7 by radio signal.
The integrated kilowatt meter recorder of wide and narrow strip is to manage carrier electric energy meter, also can the electric energy meter of RS485 module 3 interfaces be managed, its maximum characteristics are to realize that the upstream data of collector and downlink data all pass through power line carrier communication, when it manages carrier electric energy meter by carrier module, use be narrow band communication; And it is when communicating by letter with concentrator, i.e. data feedback channel, use be the broadband power line carrier communication.
The RS485 module is to be used for being connected with the RS485 interface of multifunctional electric energy meter, by its readable management electric energy meter.What the UART mouth of CPU central controller came out is TTL or LVTTL level, therefore will realize the communication of RS485 stipulations through certain conversion.
Shown in Figure 2, arrowband power line carrier communication signal is connected to transmitting-receiving commutation circuit 24 by low-voltage power line 27 through signal coupling circuit 26.Transmitting-receiving commutation circuit 24 is by 21 controls of carrier communication chip, and during reception, signal sends to carrier communication chip 21 by filtering circuit 23 and power amplification circuit 22 and handles; During transmission, signal takes place and is connected to the transmitting-receiving commutation circuit through high-pass filtering circuit in carrier communication chip 21.
This module is to be used for the interface of communicating by letter with carrier electric energy meter, is the square wave that 0-5V changes by the carrier signal waveform of carrier communication chip output, comprises abundant harmonic wave, carries out power amplification with power amplification circuit 22.Because the signal waveform after amplifying contains harmonic wave,, need carry out filter shape for reducing harmonic pollution to electrical network.After wave circuit 23 is finished filter shape after filtration, be coupled on the low-voltage power line by signal coupling circuit 26 again.The size of carrier communication chip 21 emissive powers and the height of power supply amplitude, source current providing capability are closely related, improve the power supply amplitude in the certain limit, increase power, prolong communication distance thereby can effectively strengthen emissive power.
In receiving circuit, that receives transmits by force through after effective attenuation by absorption, by the LC shunt-resonant circuit signal is carried out bandpass filtering, and good frequency-selective circuit can effectively improve the carrier wave receiving sensitivity.
Shown in Figure 3, described broadband power line carrier communication module 6 comprises bandwidth carrier communication chip 66, bandwidth carrier communication chip 66 wherein has an interface to connect CPU central controller 1, also have A/D interface and D/A interface, the digital signal that the D/A interface transmits CPU central controller 1 converts simulating signal to and sends to programmable amplifier by smoothed filter circuit 68; The analog signal conversion that the A/D interface is come in programmable amplifier becomes digital signal.Pga circuit also connects reverse sawtooth filtering 61, and 67 fens two-way of pga circuit are connected transmitting-receiving commutation circuit 64 by power amplification circuit 62 with filtering circuit 63, be connected to concentrator 29 by signal coupling circuit 65 again.
In accepting state, the high-frequency modulation signal that coupled circuit 65 takes out on the signal cable, be connected to filtering circuit 63 by transmitting-receiving commutation circuit 64, remove low-frequency noise, enter bandwidth carrier communication chip 66 analog to digital conversion interfaces by the amplification of pga circuit 67 programmable amplifiers, be converted to digital signal, arrive CPU central controller 1 through the UART oral instructions again, make storage operation or send operational order downwards by CPU central controller 1.
In transmit status, packet from CPU central controller 1 enters bandwidth carrier communication chip 66 from the UART mouth, handle through OFDM again, digital-to-analog conversion is a simulating signal, removes high frequency noise through smoothed filter circuit 68 then, sends into power amplification circuit 62 and amplifies, arrive line drive circuit then, obtain enough energy,, send on the signal cable by signal coupling circuit 65 through transmitting-receiving commutation circuit 64.Reverse sawtooth filtering 61 is auxiliary circuits of programmable amplifier among the figure, eliminates and amplifies the noise that produces.
Referring to Fig. 4 to Figure 11 is the related circuit theory diagrams of the utility model specific embodiment.
Referring to Fig. 4, the CPU central controller is connected with broadband power line carrier communication module, arrowband Power Line Carrier Communication Module, RS485 interface, infrared interface by the UART interface.
16,17 pin of CPU central controller are connected with N1, the M2 of broadband power line carrier communication CPU central controller UD1 respectively; 52,51 link to each other with arrowband power line carrier communication CPU central controller U3 pin 10,11 respectively; 42,43 are connected with the RS485 module respectively, and 53,54 are connected with infrared interface respectively, and connected mode is seen Fig. 4.
Figure 5 shows that broadband power line communication CPU central controller UD1 part pin electric power schematic diagram.CPU central controller UD1 chip transmitting terminal pin F1, G1 connects by the pin 6,5 that sends filter network and broadband analog front-end chip UA4 (see figure 6); Chip receiving end pin A3, A1 connects by accept filter network and analog front-end chip pin 10,9.
Shown in Figure 6, this figure has comprised that broadband analog front-end chip UA4 and transmitting terminal drive amplifying circuit (broadband).1,2 pins of UA4 are that difference sends, and drive amplifying circuit (broadband) by transmitting terminal and are connected with transmission/reception commutation circuit of Fig. 7, are coupled to line of electric force by signal coupler again and send; The signal of coming in from power line transmission wave network after filtration is incorporated into 27,28 pins of UA4.
Fig. 7 is the transmission/reception commutation circuit of broadband power line communication, and connected mode as shown in the figure.30,29 pins of the UA4 chip of the TX among the figure, RX connection layout 6 are used for control signal transmission/reception.
Fig. 8 is analog front-end chip U4, transmitting terminal filtering circuit and the Linear Driving circuit of arrowband power line carrier communication.3,4,5,6,7 of this analog front-end chip is connected with 51,52,55,61,60 of Fig. 9 arrowband power line carrier communication CPU central controller U3 respectively.
Fig. 9 is an arrowband power line carrier communication CPU central controller synoptic diagram, and arrowband power line carrier communication CPU central controller is connected with the analog front-end chip U4 of arrowband power line carrier communication, specifically connects as Fig. 8 explanation
Figure 10 is (arrowband) network that accepts filter.Introduce the network that accepts filter from the signal that signal coupler comes out, pass through the analog front-end chip U4 of the laggard capable arrowband of filtering power line carrier communication again.
Figure 11 is the signal coupling circuit synoptic diagram, and connected mode is seen shown in the figure.D1_OUT_B is connected D1_OUT_B and the D2_OUT_B of Figure 15 with D2_OUT_B.

Claims (3)

1. the integrated kilowatt meter recorder of wide and narrow strip, its motherboard circuit is connected to form successively by signal access port, CPU central controller (1) and data storage cell (5), it is characterized in that: described signal access port comprises IRDA module (4), RS485 module (3), arrowband Power Line Carrier Communication Module (6), be connected with CPU central controller (1) respectively, wherein RS485 module (3) is connected with RS485 electric energy meter (8), and line of electric force is connected on arrowband electric energy meter (9) and the arrowband Power Line Carrier Communication Module (6); CPU central controller (1) also is connected with broadband power line carrier communication module (2), and broadband power line carrier communication module (2) is connected on the concentrator (29) by signal coupler (28) again; Described IRDA module (4) connects wireless communicator (7) by radio signal.
2. the integrated kilowatt meter recorder of wide and narrow strip according to claim 1, it is characterized in that: described arrowband Power Line Carrier Communication Module (2) has low-voltage power line (27) and wireless communicator (7) received signal, wherein low-voltage power line (27) is connected to transmitting-receiving commutation circuit (24) by signal coupling circuit (26), wireless communicator (7) is directly connected to IRDA module (4), transmitting-receiving commutation circuit (24) sends to carrier communication chip (21) with signal by filtering circuit (23) and power amplification circuit (22) and handles, and the former road of the signal after will handling sends, and wireless communicator (7) is connected with CPU central controller (1) by IrDA module (4).
3. the integrated kilowatt meter recorder of wide and narrow strip according to claim 1, it is characterized in that: described broadband power line carrier communication module (6) comprises bandwidth carrier communication chip (66), bandwidth carrier communication chip (66) wherein has an interface to connect CPU central controller (1), also has A/D interface and D/A interface, the D/A interface sends to programmable amplifier with the signal that CPU central controller (1) transmits by the smoothed filter circuit (68) that connects, the analog signal conversion that the A/D interface is come in programmable amplifier becomes digital signal, pga circuit (67) also connects reverse sawtooth filtering (61), pga circuit (67) divides two-way to be connected transmitting-receiving commutation circuit (64) with filtering circuit (63) by power amplification circuit (62), is connected to concentrator (29) by signal coupling circuit (65) again.
CN200920351281XU 2009-12-29 2009-12-29 Wideband/narrowband integrated meter-reading device CN201876480U (en)

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Application Number Priority Date Filing Date Title
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223276A (en) * 2011-07-06 2011-10-19 宁夏隆基宁光仪表有限公司 IP (Internet Protocol) networking method applied to narrowband power line carrier communication
CN102298834A (en) * 2011-09-16 2011-12-28 国网信息通信有限公司 System and method for acquiring power utilization information
CN102377500A (en) * 2011-11-25 2012-03-14 南京致德软件科技有限公司 Device for detecting scene communication of low-voltage acquisition terminal
CN102708662A (en) * 2012-05-14 2012-10-03 广东中钰科技有限公司 Smart collecting terminal for plurality of communication modes
CN105405281A (en) * 2015-11-25 2016-03-16 国网辽宁省电力有限公司锦州供电公司 Detection method for carrier communication failures of smart electric meter
CN105634558A (en) * 2016-03-17 2016-06-01 长沙瑞斯康通信技术有限公司 Full-band power line carrier communication system
CN105656501A (en) * 2016-02-01 2016-06-08 华电智连信达科技(北京)有限公司 Multi-mode communication device and multi-mode communication method
CN106815998A (en) * 2015-11-30 2017-06-09 财团法人资讯工业策进会 Intelligent type ammeter system
CN107590985A (en) * 2017-08-16 2018-01-16 华电智连信达科技(北京)有限公司 A kind of energy data Transmission system and method
CN108492544A (en) * 2018-04-08 2018-09-04 安特仪表集团有限公司 High speed carrier communication device and system
CN109741591A (en) * 2019-03-22 2019-05-10 四川迪思源科技有限公司 A kind of data safety subregion communication means based on network system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223276A (en) * 2011-07-06 2011-10-19 宁夏隆基宁光仪表有限公司 IP (Internet Protocol) networking method applied to narrowband power line carrier communication
CN102223276B (en) * 2011-07-06 2013-08-28 宁夏隆基宁光仪表有限公司 IP (Internet Protocol) networking method applied to narrowband power line carrier communication
CN102298834A (en) * 2011-09-16 2011-12-28 国网信息通信有限公司 System and method for acquiring power utilization information
CN102377500A (en) * 2011-11-25 2012-03-14 南京致德软件科技有限公司 Device for detecting scene communication of low-voltage acquisition terminal
CN102708662A (en) * 2012-05-14 2012-10-03 广东中钰科技有限公司 Smart collecting terminal for plurality of communication modes
CN105405281A (en) * 2015-11-25 2016-03-16 国网辽宁省电力有限公司锦州供电公司 Detection method for carrier communication failures of smart electric meter
CN106815998A (en) * 2015-11-30 2017-06-09 财团法人资讯工业策进会 Intelligent type ammeter system
CN105656501A (en) * 2016-02-01 2016-06-08 华电智连信达科技(北京)有限公司 Multi-mode communication device and multi-mode communication method
CN105634558A (en) * 2016-03-17 2016-06-01 长沙瑞斯康通信技术有限公司 Full-band power line carrier communication system
CN105634558B (en) * 2016-03-17 2018-07-24 长沙瑞斯康通信技术有限公司 A kind of Whole frequency band power-line carrier communication system
CN107590985A (en) * 2017-08-16 2018-01-16 华电智连信达科技(北京)有限公司 A kind of energy data Transmission system and method
CN108492544A (en) * 2018-04-08 2018-09-04 安特仪表集团有限公司 High speed carrier communication device and system
CN109741591A (en) * 2019-03-22 2019-05-10 四川迪思源科技有限公司 A kind of data safety subregion communication means based on network system

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Granted publication date: 20110622

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