CN202033894U - Carrier meter reader with multiple RS485 ports - Google Patents
Carrier meter reader with multiple RS485 ports Download PDFInfo
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- CN202033894U CN202033894U CN2011200793039U CN201120079303U CN202033894U CN 202033894 U CN202033894 U CN 202033894U CN 2011200793039 U CN2011200793039 U CN 2011200793039U CN 201120079303 U CN201120079303 U CN 201120079303U CN 202033894 U CN202033894 U CN 202033894U
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- 238000004891 communication Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
- 230000003321 amplification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a carrier meter reader with multiple RS485 ports. The carrier meter reader comprises a plurality of electronic electric energy meters and a main single chip microcomputer connected with a storage and is characterized in that the electronic electric energy meters are connected with the main single chip microcomputer through a multipath RS485 selection circuit; and an output serial port of the main single chip microcomputer is connected with a carrier communication module, a power line carrier communication module transmits data to a concentrator through a power line, and the concentrator transmits read meter data to a remote master station through a wired or wireless network, so that the function of reading multipath electronic electric energy meters with RS485 ports is realized. When the carrier meter reader provided by the utility model is used, meter number does not need to be preset on the meter reader, during each meter reading, the meter reader reads the meters on each port in turns through broadcast meter numbers, and the electric energy meters return the meter number and the bottom degree data of the meters. The meter reader stores the meter number and data corresponding to each port, and the data is uploaded to a system master station through the concentrator and a GPRS/CDMA network by means of a low-voltage power carrier communication function, so that the remote meters can be remotely read.
Description
Technical field
The utility model relates to a kind of many RS485 port carrier meter reading device.
Background technology
At present, residential quarter power consumption great majority still adopt the mode of manual metering to carry out data statistics, and the automatic centralized meter-reading system of minority also is to adopt wireless collection to copy pattern, the cost height, require the network coverage, cause the difficulty of certain construction and wiring.In recent years, along with the raising of national grid quality, low voltage power line carrier had become hot technology as communication mode.But because at present uneven, the domestic power grid quality of the employed ammeter type of demestic user is abominable, mainly show as the existence of phenomenons such as decay is serious, noise is abundant, harmonic interference is serious, channel parameter changes at any time, be unfavorable for very much communication.So, how the data in the ammeter are transmitted accurately, reliably, fast and come up to become an important technological problems of being badly in need of solution.
The RS485 carrier meter reading device that similar applications is arranged in the market, but it realizes going up the principle that adopts " single RS485 port; electric energy meter adopts the RS485 bus type to insert ", have: each the electric energy meter numbered address that needs before use to insert the RS485 bus earlier is preset in the meter-copy device, and numbering presets the shortcoming that mistake can't be checked meter.
Summary of the invention
The purpose of this utility model provides a kind of many RS485 port carrier meter reading device, realization need not to preset the function that table number can be checked meter to the electronic electric energy meter of multichannel band RS485, can be by the low-voltage power carrier communication function, data are uploaded to the main website of system by concentrator and GPRS/CDMA network, realize distant place electric energy meter is carried out remote meter reading.
Many RS485 port carrier meter reading device of the present utility model comprises a plurality of electronic electric energy meters and the host scm that is connected with storer, it is characterized in that: described a plurality of electronic electric energy meters select circuit to be connected with described host scm through multichannel RS485; The output serial ports of described host scm is connected with a carrier communication module, and described Power Line Carrier Communication Module is carried out data transmission through a line of electric force and a concentrator, and described concentrator is sent to distant place main website by wired or wireless network with meter reading data.
The utility model adopts the RS485 multiplexer circuit to realize the electronic electric energy meter of multichannel band RS485 is checked meter, the utility model need not to preset table number, when checking meter, meter-copy device is checked meter by the broadcasting table number to each port in turn at every turn, and electric energy meter returns table number and its end degrees of data.Meter-copy device is preserved the table number and the data of each port correspondence, by the low-voltage power carrier communication function, data is uploaded to the main website of system by concentrator and GPRS/CDMA network, realization is carried out remote meter reading to distant place electric energy meter, integrated circuit is simple, and is easy to use, has good practical values.
Description of drawings
Fig. 1 is the architecture principle block diagram of the utility model embodiment.
Fig. 2 is the circuit theory synoptic diagram of the carrier communication module of the utility model embodiment.
Fig. 3 is the multiplexer circuit synoptic diagram of the utility model embodiment.
Fig. 4 is the carrier wave transtation mission circuit synoptic diagram of the utility model embodiment.
Fig. 5 is the carrier wave receiving circuit synoptic diagram of the utility model embodiment.
Fig. 6 is the carrier wave coupled circuit synoptic diagram of the utility model embodiment.
Fig. 7 is the carrier signal synchronizing circuit synoptic diagram of the utility model embodiment.
Fig. 8 is the system program process flow diagram of the host scm of the utility model embodiment.
Fig. 9 is the 78F9234 Single Chip Microcomputer (SCM) program process flow diagram of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the utility model provides a kind of many 485 port carrier meter reading devices, comprise a plurality of electronic electric energy meters and the host scm that is connected with storer, it is characterized in that: described a plurality of electronic electric energy meters select circuit to be connected with described host scm through multichannel RS485; The output serial ports of described host scm is connected with a carrier communication module, and described Power Line Carrier Communication Module is carried out data transmission through a line of electric force and a concentrator, and described concentrator is sent to distant place main website by wired or wireless network with meter reading data.
Please refer to Fig. 2, the carrier communication module described in the present embodiment comprises: a carrier wave coupled circuit is connected with low-voltage power line;
One carrier wave transtation mission circuit is connected with the input end of described carrier wave coupled circuit; One carrier wave receiving circuit is connected with the output terminal of described carrier wave coupled circuit; One live road ripple signal synchronization circuit electrically connects with described carrier wave transtation mission circuit, carrier wave receiving circuit and carrier wave coupled circuit; And a communication port that is connected with the host scm serial ports, described communication port is connected with the carrier wave receiving circuit with described carrier wave transtation mission circuit.
In order to allow those skilled in the art better understand the utility model, below our bound fraction circuit module carry out simple declaration, please refer to Fig. 3, Fig. 3 is the utility model multiplexer circuit synoptic diagram, multichannel RS485 port carrier meter reading described in the utility model, be to carry out broadcast address by the electronic electric energy meter that in turn each RS485 port is connect to check meter, obtaining the address number of electronic electric energy meter that this port is connect, and the table number address corresponding relation of this many RS485 port carrier meter reading each port numbers of device of record and its electronic electric energy meter that connects on storer automatically.The utility model multichannel 485 shared B lines, the A line is selected by a plurality of relays.As shown in the figure, need copy and accept the ammeter that is connected the first via, just the I/O port (485_S1) by single-chip microcomputer 78F0526 is set to high level, relay K 1 normally opened contact is closed and, the check meter connection of circuit of realization 485.
Carrier transmitting-receiving circuit of the present utility model by single-chip microcomputer 78F9234 with and peripheral circuit realize.Single-chip microcomputer 78F0526 sends amr frame by serial port UART6 to single-chip microcomputer 78F9234 after selecting to connect each road ammeter of copying and accepting by multichannel I/O control multicircuit relay, sends carrier signal via 78F9234 to power circuit then.Please refer to Fig. 4, Fig. 4 is a carrier wave transtation mission circuit synoptic diagram, among the figure, constitutes a power amplification circuit by Q3, Q4, Q6, Q7, and its effect is that the square-wave signal FSK_OUT that single-chip microcomputer 78F9234 sends is amplified.C17 and L1 constitute a bandpass filter, and signal is carried out shaping and filtering.Signal finally outputs to the line of electric force coupled circuit.D2, D3 are holding circuit, prevent that overvoltage from causing damage to circuit.
Please refer to Fig. 5, Fig. 5 is a carrier wave receiving circuit synoptic diagram; Among the figure, CF1 and U4(MC3361) constitute a bandwidth-limited circuit, the undesired signal that coupling is come on the filtering line of electric force.Q5, Q6 constitute signal amplification circuit filtered signal are amplified, carry out integration via C18 again after, the A/D sample port that outputs to single-chip microcomputer 78F9234 is carried out data parsing.
Please refer to Fig. 6, Fig. 6 is a carrier wave coupled circuit synoptic diagram, and T2 is a pickup coil (turn ratio is 10:40) among the figure, constitutes coupled circuit with high-voltage capacitance CO2.TVS2 restricting signal voltage prevents from that the instantaneous high pressure signal is coupled on the line of electric force circuit is caused damage.
Please refer to Fig. 7, Fig. 7 is a carrier signal synchronizing circuit synoptic diagram, the utility model utilize AC power Vsys near zero-crossing point O1, O2 by the judgement that realizes the line of electric force zero crossing, and as the synchronous foundation of carrier signal.
Fig. 8 is the system program process flow diagram of the host scm of the utility model embodiment.Fig. 9 is the 78F9234 Single Chip Microcomputer (SCM) program process flow diagram of the utility model embodiment.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (2)
1. the carrier meter reading of RS485 port more than kind device comprises a plurality of electronic electric energy meters and the host scm that is connected with storer, it is characterized in that: described a plurality of electronic electric energy meters select circuit to be connected with described host scm through multichannel RS485; The output serial ports of described host scm is connected with a carrier communication module, and described Power Line Carrier Communication Module is carried out data transmission through a line of electric force and a concentrator, and described concentrator is sent to distant place main website by wired or wireless network with meter reading data.
2. many RS485 port carrier meter reading device according to claim 1 is characterized in that described carrier communication module comprises:
One carrier wave coupled circuit is connected with low-voltage power line;
One carrier wave transtation mission circuit is connected with the input end of described carrier wave coupled circuit;
One carrier wave receiving circuit is connected with the output terminal of described carrier wave coupled circuit;
One live road ripple signal synchronization circuit electrically connects with described carrier wave transtation mission circuit, carrier wave receiving circuit and carrier wave coupled circuit; And a communication port that is connected with the host scm serial ports, described communication port is connected with the carrier wave receiving circuit with described carrier wave transtation mission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200793039U CN202033894U (en) | 2011-03-24 | 2011-03-24 | Carrier meter reader with multiple RS485 ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200793039U CN202033894U (en) | 2011-03-24 | 2011-03-24 | Carrier meter reader with multiple RS485 ports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033894U true CN202033894U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200793039U Expired - Fee Related CN202033894U (en) | 2011-03-24 | 2011-03-24 | Carrier meter reader with multiple RS485 ports |
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| CN (1) | CN202033894U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832973A (en) * | 2012-09-19 | 2012-12-19 | 湖南大学 | Network accessing method of automatic meter reading system |
| CN102938720A (en) * | 2012-11-21 | 2013-02-20 | 武汉昊昱微电子股份有限公司 | Non-polarity communication circuit based on ammeter application |
| CN105024747A (en) * | 2015-08-19 | 2015-11-04 | 长沙威胜信息技术有限公司 | Signal relay equipment of power utilization information acquisition terminal |
| CN105632155A (en) * | 2015-12-29 | 2016-06-01 | 成都兴联宜科技有限公司 | Photoelectric direct-reading wired teletransmission gas meter for automatically recognizing channel numbers |
| CN105719471A (en) * | 2016-03-29 | 2016-06-29 | 国网上海市电力公司 | Concentrator GPRS (general packet radio service) signal extender |
| CN111256772A (en) * | 2020-02-21 | 2020-06-09 | 湖南东润智能仪表有限公司 | Self-adaptive remote meter reading device and method of reading system |
-
2011
- 2011-03-24 CN CN2011200793039U patent/CN202033894U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832973A (en) * | 2012-09-19 | 2012-12-19 | 湖南大学 | Network accessing method of automatic meter reading system |
| CN102938720A (en) * | 2012-11-21 | 2013-02-20 | 武汉昊昱微电子股份有限公司 | Non-polarity communication circuit based on ammeter application |
| CN102938720B (en) * | 2012-11-21 | 2015-06-10 | 武汉昊昱微电子股份有限公司 | Non-polarity communication circuit based on ammeter application |
| CN105024747A (en) * | 2015-08-19 | 2015-11-04 | 长沙威胜信息技术有限公司 | Signal relay equipment of power utilization information acquisition terminal |
| CN105632155A (en) * | 2015-12-29 | 2016-06-01 | 成都兴联宜科技有限公司 | Photoelectric direct-reading wired teletransmission gas meter for automatically recognizing channel numbers |
| CN105719471A (en) * | 2016-03-29 | 2016-06-29 | 国网上海市电力公司 | Concentrator GPRS (general packet radio service) signal extender |
| CN111256772A (en) * | 2020-02-21 | 2020-06-09 | 湖南东润智能仪表有限公司 | Self-adaptive remote meter reading device and method of reading system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID FUJIAN ELECTRIC POWER CO., LTD. XU ZHIY Free format text: FORMER OWNER: ZHANG HEBIN LE KAICHENG LIU ZHIGANG Effective date: 20131210 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: XU ZHIYONG Effective date: 20131210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 361012 XIAMEN, FUJIAN PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131210 Address after: 100031 Xicheng District, Chang'an Avenue, No. 86, Patentee after: State Grid Corporation of China Patentee after: State Grid Fujian Electric Power Co., Ltd. Patentee after: Xu Zhiyong Patentee after: Zhang Hebin Patentee after: Le Kaicheng Patentee after: Liu Zhigang Address before: Siming District of Xiamen City, Fujian province 361012 Lian Xing No. 42 room 505 Patentee before: Xu Zhiyong Patentee before: Zhang Hebin Patentee before: Le Kaicheng Patentee before: Liu Zhigang |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20180324 |