CN201607819U

CN201607819U - Low-voltage wired automatic meter reading system

Info

Publication number: CN201607819U
Application number: CN2010200144306U
Authority: CN
Inventors: 孙祥庚; 范文涛; 李善勤; 朱英杰; 马万青
Original assignee: XIAJIN YINGUANG ELECTRIC POWER INVESTMENT GROUP CO Ltd
Current assignee: XIAJIN YINGUANG ELECTRIC POWER INVESTMENT GROUP CO Ltd
Priority date: 2010-01-08
Filing date: 2010-01-08
Publication date: 2010-10-13
Anticipated expiration: 2020-01-08

Abstract

The utility model relates to a low-voltage wired automatic meter reading system which is characterized by being provided with a plurality of collectors, a 485HUB and a concentrator, wherein 485 communication interfaces A and B of a watt-hour meter are respectively and correspondingly connected with A and B which collect the 485 interfaces of the watt-hour meter of the collectors, the collectors are respectively and correspondingly connected with the communication 485 interfaces A and B, the 485HUB are respectively and correspondingly connected with the communication 485 interfaces A and B of the concentrator, an RS485 bus network is constructed between the collectors and the concentrator, the installation position of the concentrator is the center of the bus network, and RS485 interfaces A/B/FG of the concentrator at the center are respectively butted with A/B/FG of a bus. The low-voltage wired automatic meter reading system establishes an accurate, high-speed and maintenance-free communication channel between the collectors and the concentrator through the RS485 bus in the wired form, thereby leading the success rate of automatic meter reading to achieve 100%, leading the accuracy to achieve 100% and realizing remote prepaid control and electric charge pre-storage management.

Description

The wired Automatic meter reading system of low pressure

Technical field

The utility model relates to field of power, relates in particular to a kind of Automatic meter reading system of automatic collection low pressure electricity consumer watt-hour meter data of wired fieldbus mode.

Background technology

At present, low-voltage customer watt-hour meter data acquisition system (DAS) is divided into Fourth Ring joint: watt-hour meter to collector link, collector to concentrator link, concentrator to the main website link of checking meter, the main website that checks meter to the power consuming administrative system link.All adopt the RS485 bus at watt-hour meter to the communication modes of this link of collector, RS485 also becomes the standard interface of watt-hour meter, and country has also issued the communication protocol standard.Generally adopt GPRS/CDMA at concentrator to the communication modes of the main website link of checking meter.The main website that checks meter is a LAN to the communication of power consuming administrative system link.The communication comparative maturity of these three links.Communication modes from collector to the concentrator link generally adopts power carrier and low-power wireless, but there is the shortcoming that the communication success ratio is low, speed is low, maintenance cost is high in this dual mode.

Summary of the invention

In order to solve in that collector is low to the communication success ratio of concentrator link, speed is low, the high problem of maintenance cost, wired on-the-spot RS485 bus mode that adopts the wired Automatic meter reading system of the utility model low pressure realizes the data communication between collector and the concentrator, make the communication success ratio of this link reach 100%, communication speed is not less than 9600bps, and is non-maintaining.The technical scheme that its technical matters that solves the utility model adopts is: the wired Automatic meter reading system of this low pressure comprises a plurality of user's electric energy meters and main website of system, it is characterized in that: it is provided with a plurality of collectors, 485HUB and concentrator, A, the B of watt-hour meter 485 communication interfaces respectively with the corresponding connection of A, B of collection ammeter 485 interfaces of collector, collector is distinguished corresponding connection with A, the B of 485 interfaces of communication, and 485HUB distinguishes corresponding connection with A, the B of 485 interfaces of concentrator communication.Between collector and concentrator, make up a RS485 bus network.The position that concentrator is installed is the center of this bus network, the A/B/FG of the RS485 of center concentrator interface respectively with the A/B/FG butt joint of bus.From the center, joint use the RS485 bus along the topological structure that sets up of line of electric force, antenna height is lower than line of electric force, and keeps a safe distance.Splitter is installed at entrance line tap place at each table case.The bus definition that comes out from the center is the RS485 main line, and the bus definition from the splitter to the collector is the RS485 branch line.RSHUB is installed, to realize the tap and the isolation of bus at main line tap place.Just construct RS485 bus network from the collector to the concentrator according to this scheme.

The beneficial effects of the utility model are, RS485 bus by wired form, between collector and concentrator, set up one accurately, at a high speed, non-maintaining communication channel, this just makes that the success ratio of automatic data logging reaches 100%, rate of accuracy reached to 100%, and making the long-range pre-payment control and the electricity charge store up management in advance can realize.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is the location drawing of the utility model RS485 bus;

Fig. 3 is the wiring diagram of concentrator and RS485 bus and RSHUB in the utility model.

Embodiment

With reference to accompanying drawing, the utility model is described further: the wired Automatic meter reading system of this low pressure comprises a plurality of user's electric energy meters and main website of system, it is characterized in that: it is provided with a plurality of collectors, 485HUB and concentrator, A, the B of watt-hour meter 485 communication interfaces respectively with the corresponding connection of A, B of collection ammeter 485 interfaces of collector, collector is distinguished corresponding connection with A, the B of 485 interfaces of communication, and 485HUB is corresponding respectively even with A, the B of 485 interfaces of concentrator communication.Between collector and concentrator, make up a RS485 bus network.The position that concentrator is installed is the center of this bus network, the A/B/FG of the RS485 of center concentrator interface respectively with the A/B/FG butt joint of bus.From the center, joint use the RS485 bus along the topological structure that sets up of line of electric force, antenna height is lower than line of electric force, and keeps a safe distance.Splitter is installed at entrance line tap place at each table case.The bus definition that comes out from the center is the RS485 main line, and the bus definition from the splitter to the collector is the RS485 branch line.RSHUB is installed, to realize the tap and the isolation of bus at main line tap place.Just construct RS485 bus network from the collector to the concentrator according to this scheme.

This bus network for the watt-hour meter data of being gathered provide one accurately, at a high speed, non-maintaining communication channel.Owing to realized reliable fast data communication, collector not only can be transferred to main website to the data that collect reliably, and can accept the guidance command of main website, to the electricity consumer power failure of arrearage.In this scheme, but adopt the watt-hour meter with power down function and 485 interfaces, when needs have a power failure, main website will have a power failure to order and be issued to collector, and collector control watt-hour meter has a power failure.Collector is the open and-shut mode of acquisition tables case also, forms to show case switching record, and a table case is opened and closed reporting events to main website.The main website that checks meter provides the electricity consumption data for power consuming administrative system, and power consuming administrative system and bank savings system interaction are if user's the savings electricity charge just notify the user to store up expense with short message way near using up; Just notify the user to store up expense if user's storage expense is intact, notify collector to have a power failure for this user simultaneously with short message way.

Claims

1. wired Automatic meter reading system of low pressure, comprise a plurality of user's electric energy meters and main website of system, it is characterized in that: it is provided with a plurality of collectors, 485HUB and concentrator, the A of watt-hour meter 485 communication interfaces, B respectively with the A of collection ammeter 485 interfaces of collector, B is corresponding to be connected, the A of 485 interfaces of collector and communication, B is corresponding respectively to be connected, the A of 485 interfaces of 485HUB and concentrator communication, B is corresponding respectively to be connected, between collector and concentrator, make up a RS485 bus network, the position that concentrator is installed is the center of this bus network, the A/B/FG of the RS485 of center concentrator interface respectively with the A/B/FG butt joint of bus, from the center, the topological structure that sets up along line of electric force is joint used the RS485 bus, splitter is installed at entrance line tap place at each table case, the bus of coming out from the center is the RS485 main line, bus from the splitter to the collector is the RS485 branch line, and RSHUB is installed at main line tap place, constructs the RS485 bus network from the collector to the concentrator.