The intelligence automatic meter reading system
[technical field]
The utility model relates to intelligent automatic meter reading system, is mainly used in the collection of all kinds of table counting certificates.Automatic meter reading system is by network and all kinds of table meters of computer technology remote copying, and handles and offer managerial personnel's use with main website software to copying and accepting data.
[background technology]
At present, traditional electric energy meter automatic meter reading system (see figure 1) is that main website adopts telephone wire dial-up connection concentrator, because charge on time, so each connection must be dialled again, operation is complicated; Main website can only pass through concentrator of telephone wire dial-up connection, time-consuming accident at every turn.
Have, traditional scheme uses the RS485 line to connect concentrator and acquisition terminal again because concentrator is very far away with the acquisition terminal distance, many times will bury cable, and it is huge to lay 485 lineman's journeys, cost is also high.
Also have, traditional scheme is the pulse signal of acquisition terminal by taps collection electric energy meter, and accumulation calculating power consumption, causes the electric energy meter read untrue.
The utility model has carried out useful improvement in order to overcome above shortcoming.
[utility model content]
The utility model has overcome above-mentioned deficiency, provides a kind of main website to connect many group concentrators, has utilized the low voltage power line carrier network to need not newly to add circuit, electric energy meter accuracy of reading, automatic meter reading system that cost is low.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposal:
The intelligence automatic meter reading system, comprise main website server, concentrator, acquisition terminal, the signal input part of several acquisition terminals is connected with many group ammeters by RS485 line or RS422 line respectively, the data output end of several acquisition terminals all is connected to the input end of concentrator by the low voltage power line carrier network, the output terminal of concentrator connects the main website server by public wireless network again;
Aforesaid intelligent automatic meter reading system, the output terminal of described concentrator connects modulator-demodular unit, and modulator-demodular unit connects the network equipment by public wireless network, and the network equipment connects router by broadband networks again, and router connects the main website server;
Aforesaid intelligent automatic meter reading system, described main website server connects many group concentrators by public wireless network;
Aforesaid intelligent automatic meter reading system, described public wireless network can be GPRS network, the described network equipment is a GPRS network equipment; Described public wireless network also can be cdma network, and the described network equipment is a CDMA network facility; Described public wireless network can also be the WIMAX network, and the described network equipment is the WIMAX network equipment;
Aforesaid intelligent automatic meter reading system, described concentrator connects the low voltage power line carrier network, and the low voltage power line carrier network can connect many group acquisition terminals.
The utility model compared with prior art has following advantage:
1, adopt public wireless network (as GPRS, CDMA, WIMAX network etc.), online in the time of can be permanent because public wireless network is by data volume clearing, need not to redial, efficient significantly improves; Public wireless network tolerable main website connects the concentrator of not limitting quantity simultaneously, and multiplex's operation really is fit to extensive the use;
2, adopt the low voltage power line carrier network, connect concentrator and acquisition terminal, utilize existing network, need not newly to add circuit, cost is low, and is quick for installation easy;
3, totally digitilized information processing, this programme are to gather the electric energy meter data by RS485 or RS422 communication port, when avoiding collecting pulse the pulse of losing are arranged and cause the disadvantage of electric energy meter read untrue; Because acquisition terminal is adjacent with electric energy meter, order wire distance under this pattern is very short, and cost is not high; Adopt the full electronic electric energy meter, the instability when avoiding the opto-electronic conversion of mechanical power energy meter; The electric energy meter that adopts liquid crystal display to show when avoiding doing to show with traditional character wheel formula register, pushes away motionless character wheel, so that the generation cumulative errors because of pulse signal is unstable.
[description of drawings]
Fig. 1 is the synoptic diagram of prior art;
Fig. 2 is a synoptic diagram of the present utility model;
Fig. 3 is the synoptic diagram of embodiment one of the present utility model;
Fig. 4 is the synoptic diagram of embodiment two of the present utility model;
Fig. 5 is the synoptic diagram of embodiment three of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
The intelligence automatic meter reading system, (see figure 2) comprises main website server, concentrator, acquisition terminal, the signal input part of several acquisition terminals is connected with many group ammeters by RS485 or RS422 line respectively, the data output end of several acquisition terminals all is connected to the input end of concentrator by alternating current 220V low voltage power line carrier network, the output terminal of concentrator connects the main website server by public wireless network again.
The output terminal of concentrator can connect modulator-demodular unit, and modulator-demodular unit connects the network equipment by public wireless network, and the network equipment connects router by broadband networks again, and router connects the main website server.
The main website server can connect many group concentrators by public wireless network.
The intelligence automatic meter reading system, as embodiment one, the public wireless network of (see figure 3) can be GPRS network, the network equipment can be GPRS network equipment; As embodiment two, the public wireless network of (see figure 4) can be cdma network, and the network equipment is a CDMA network facility; As embodiment three, the public wireless network of (see figure 5) can be the WIMAX network, and the network equipment is the WIMAX network equipment.
Concentrator connects the low voltage power line carrier network, and the low voltage power line carrier network can connect many group acquisition terminals.
The main website server is a server-class computers, generally place control center, the main website software of checking meter is installed, connect broadband networks by router, after connecting GPRS network via GPRS network service supplier's the network equipment again, can with linchpin down all system equipments communicate by letter, receive and send messages.The main website server can be used as a workstation to be treated, and for a bigger Utilities Electric Co., a plurality of main websites server can be set just.
Concentrator is the terminal of intensive data transmitting-receiving, places the electricity consumption scene.It is responsible for data aggregation, carries out necessary processing and preserves, and provide transmission channel to the main website server to the true-time operation of electric energy meter.Concentrator is that unit is provided with the substation transformer, and each power distribution station is exactly a subsystem, and concentrator then is the main website end of this subsystem.Concentrator is through all devices of low voltage power line carrier management low-pressure side, as the various table meters under acquisition terminal and the acquisition terminal.
Acquisition terminal is the terminal device of image data, places the electricity consumption scene, gathers electric energy meter information by RS485 line (or RS422 line), also can be by RS485 line (or RS422 line) but connect other controlling equipments such as electric energy meter, water meter, gas meter.Acquisition terminal can carry out data transmission or action according to the concentrator order that receives.
Use free wireless public network (as GPRS network, cdma network, WIMAX network etc.) between main website server and the concentrator, main website can realize checking meter by network.
Use the low voltage power line carrier network between concentrator and the acquisition terminal.
Use RS485 (or RS422) signal wire between acquisition terminal and the electric energy meter.