CN203502453U - Wireless public network communication module for three-phase intelligent electric energy meter - Google Patents
Wireless public network communication module for three-phase intelligent electric energy meter Download PDFInfo
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- CN203502453U CN203502453U CN201320586892.9U CN201320586892U CN203502453U CN 203502453 U CN203502453 U CN 203502453U CN 201320586892 U CN201320586892 U CN 201320586892U CN 203502453 U CN203502453 U CN 203502453U
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Abstract
The utility model relates to a wireless public network communication module for three-phase intelligent electric energy meter, including a microprocessor (1), a GPRS communication circuit (2) sending a measurement information of the electric energy meter to master station, a memorizer (3) storing a measurement data of the electric energy meter, a power supply circuit (4), a electric energy meter interface (5) and an operation state indicator (6); the microprocessor (1) is electrically connected with the GPRS communication circuit (2), the memorizer (3), the power supply circuit (4), the electric energy meter interface (5) and the operation state indicator (6) respectively, according to the measurement data of the electric energy meter, to determine whether the electric energy meter is working properly, and a non-normal information of the electric energy meter working via GPRS communication circuit (2) is sent to the master station. The utility model has the technical effects that: the utility model is convenient and quick for on-site installation, reduces failure points, reduces the communication links, etc.
Description
Technical field the utility model relates to Electric Energy Metering Technology, particularly relates to three-phase intelligent electric-energy meter.
Background technology is along with electronic technology development and manufacturing process improve, and intelligent electric meter technology is very flourishing, and department of power supply administration can accurately carry out metering exactly to various electric-power metering points.When realizing accurate-metering, be accompanied by the demand that metrical information is gathered, client needs advanced acquisition system to facilitate each ammeter data collection analysis, and realizes unified management and the control of ammeter.The existing low pressure automatic meter reading system of grid company and specially change acquisition terminal carry out remote meter reading and control to electric energy meter.In low pressure automatic meter reading system, concentrator is communicated by letter with electric energy meter by carrier channel or micropower wireless channel, after concentrator copy reading electric energy meter data, then by delivering to grid company main website on wireless public network (GPRS/CDMA) or Ethernet.Specially become acquisition terminal and communicate by letter with electric energy meter by RS485, specially become after acquisition terminal copy reading electric energy meter data, also by delivering to grid company main website on wireless public network (GPRS/CDMA) or Ethernet.
The mode of three-phase electric energy meter and the direct communication of electrical network main website has Ethernet, optical fiber etc. at present, and these two kinds of modes all need to be furnished with in electric energy meter installation place Ethernet interface or optical fiber interface.
In existing low pressure automatic meter reading system, master access electric energy meter, need to pass through concentrator relaying, and the electric energy meter quantity of concentrator management is more.Restriction due to communication channel between concentrator and ammeter, data item that can copy reading to each electric energy is restricted, the density of storage of electrical energy table load curve can not be too large, and general only for emphasis user's electric quantity data storage curve, profile memory is spaced apart 1 hour.The alarm that electric energy meter produces, can not be sent to main website in time, an electric energy meter running status word of concentrator inquiry in general a day, and the alarm item quantity that can detect is also restricted.
For existing special change acquisition terminal, master access electric energy meter, needs by specially becoming acquisition terminal relaying.Specially become between acquisition terminal and electric energy meter and is connected with RS485 line, increase on-site installation work amount, increase trouble spot, cost is higher.
Utility model content the technical problems to be solved in the utility model is to provide a kind of scene easy for installation, the wireless public network communication module for three-phase intelligent electric-energy meter that trouble spot is few.
The utility model solve the technical problem can be by realizing by the following technical solutions:
Design, make a kind of wireless public network communication module for three-phase intelligent electric-energy meter, comprise microprocessor, to main website, send the GPRS telecommunication circuit of electric energy meter metrical information, storer, power circuit, electric energy meter interface and the mode indicator of storage of electrical energy table continuous data; Described microprocessor is electrically connected to GPRS telecommunication circuit, storer, power circuit, electric energy meter interface and positioning indicator respectively, be used for according to the electric energy meter continuous data gathering, judge that whether electric energy meter work is normal, and the improper information exchange of electric energy meter work is crossed to GPRS telecommunication circuit be sent to main website.
Further, described wireless public network communication module also comprises charge management circuit and rechargeable battery, and charge management circuit is electrically connected to described rechargeable battery and power circuit respectively.
Further, described wireless public network communication module also comprises SIM card seat, and described SIM card seat is connected with the SIM card interface of GPRS telecommunication circuit.
Further, described microprocessor is electrically connected to GPRS telecommunication circuit by UART serial ports.
Compared with prior art, the utlity model has following technique effect:
1. wireless communication module and three-phase electric energy meter are structurally integrated, on-the-spot easy for installation, reduce the fault point.
2. with the wire message way comparison such as Ethernet, optical fiber, wireless communication module adopts GPRS/CDMA wireless public network channel, and the workload that does not have network to lay, safeguard is quick and easy for installation.
3. with respect to low pressure automatic meter reading system, with the three-phase electric energy meter of wireless communication module, can directly communicate by letter with main station system, reduce communication link; The data acquisition memory function that wireless communication module has, can monitor electrical network parameter in electric energy meter in real time, real-time report electrical network abnormality alarming, and the load curves of electric energy meter of store high-density, for operation of power networks state analysis provides reliable basis.
4. with respect to special change acquisition terminal, wireless communication module and three-phase electric energy meter are structurally integrated, on-the-spot easy for installation; In communication link, also reduced RS485 interface, reduced trouble spot; To only having the application scenarios of an electric energy meter, reduced cost.
Accompanying drawing explanation
Fig. 1 is the utility model wireless communication module logic block schematic diagram;
Fig. 2 is the communication connection schematic diagram of described wireless communication module and main website and electric energy meter;
Fig. 3 is the power circuit principle figure of described wireless communication module;
Fig. 4 is the charge management circuit schematic diagram of described wireless communication module;
Fig. 5 is that electric energy meter is by described wireless communication module and long-range master station communication schematic diagram;
Fig. 6 is the software flow schematic diagram of described wireless communication module;
Fig. 7 is data acquisition and the storing software schematic flow sheet of described wireless communication module;
Fig. 8 is the logout of described wireless communication module and reports software flow schematic diagram.
Embodiment is described in further detail below in conjunction with the embodiment shown in accompanying drawing.
Fig. 1 is Triphase control-rate intelligent electric energy meter wireless communication module hardware block diagram, comprise microprocessor 1, to main website, send the GPRS telecommunication circuit 2 of electric energy meter metrical information, storer 3, power circuit 4, electric energy meter interface 5 and the mode indicator 6 of storage of electrical energy table continuous data; Described microprocessor 1 is electrically connected to GPRS telecommunication circuit 2, storer 3, power circuit 4, electric energy meter interface 5 and positioning indicator 6 respectively, be used for according to the electric energy meter continuous data gathering, judge that whether electric energy meter work is normal, and the improper information exchange of electric energy meter work is crossed to GPRS telecommunication circuit 2 be sent to main website.Electric energy meter provides DC12V power supply by electric energy meter interface for wireless communication module.DC12V power supply is through power management chip output DC 4V, DC 5V and DC 3.3V, as shown in Figure 4.DC 4V is for GPRS chip, and DC 5V is for charging management chip and hardware watchdog 10, and DC 3.3V is used for Micro-processor MCV 1, serial Flash storer 3 and mode indicator 6 as LED.When electric energy meter AC power powers on, DC12V power supply provides power supply for described wireless communication module; When electric energy meter AC power has a power failure, wireless communication module is powered electrical source exchange automatically to reserce cell, provides AC power power-off signal to MCU simultaneously.Hardware watchdog 10 monitors DC12V power supply, in the power down of electric energy meter AC power, causes DC12V to reduce, and watchdog chip produces AC power power-off signal.The power circuit principle figure of described wireless communication module as shown in Figure 3.
MCU is by UART serial ports, to be connected between GPRS chip with GPRS telecommunication circuit 2, and MCU controls the operations such as the powering on of GPRS chip, reset by GPIO pin, and SIM card seat is connected with SIM card interface on GPRS chip.GPRS chip has antennal interface, and antenna can adopt built-in short antenna or external vast of heaven line.
MCU connects serial Flash storer by SPI interface, and memory span is 64Mbits, for storing historical day, the moon, curve data.Wireless communication module has " long-range " and " this locality " two status indicator LED, remote lamp---extinguish represent no signal or signal not enough, red flicker frequency 1Hz dutycycle 50% represents that network signal is enough, the success of normal bright expression login main website; During green flicker, between representation module and public network, carrying out exchanges data; This floor-lamp---red light Chang Liang, between representation module and base table, communication is normal; Red light often goes out, communication failure between representation module and base table.Hardware watchdog chip is for the running status of monitoring software, if wireless communication module disturbs or when other reason causes software operation state abnormal, watchdog chip produces reset signal, allows system return to normal operating condition because of electrical network.
Electric energy meter interface except DC12V power supply, interface, also have UART interface and state-event pin.Wireless communication module is communicated by letter with electric energy meter by UART interface.On having alarm event to occur and need, electric energy meter self gives the correct time, state-event pin output low level, requesting query anomalous event; Wireless communication module is inquired about complete output high resistant.
Wireless communication module major function is telecommunication, data acquisition and storage, logout and reports and local control, as shown in Figure 5.
1) telecommunication
Management uplink communication link, builds the interaction platform with main website by GPRS wireless public network.Wireless communication module starts after operation, gives GPRS chip power, reset, checks GPRS chip status.After GPRS chip operation is normal, whether inquiry GSM signal and SIM card be normal, then logon attempt GPRS network.If logined successfully, wireless communication module sends TCP connection request as client to main website, TCP connects after foundation, between wireless communication module and main website, just can receive and dispatch application message, in application layer wireless communication module and main website with DL/T 698.41-2010 agreement or Q/GDW1376.1-2013 protocol communication, as shown in Figure 2.Between wireless communication module and main website, by heartbeat message, guarantee that link is in normal condition, within certain interval time, do not receive main website message, wireless communication module Jiang Xiang main website sends heartbeat message, heartbeat message is replied by main website, wireless communication module is received heartbeat response message, determines that link is normal.If heartbeat detection failure, wireless communication module restarts login main website process.Client can issue prepayment information in main website, also can issue the control commands such as switching on, the data such as the electric energy meter of copy reading in real time voltage, electric current and electric weight, the transparent forwarding mechanism of main website by wireless communication module can copy reading electric energy meter arbitrary data item, under licensing status, ammeter parameter can be set.Remote communication module software flow is shown in Fig. 6.
2) data acquisition and storage
The sampling interval circle collection ammeter data default according to client, a curve data of storage in every 15 minutes, storage every day day freezing data, monthly storage month freezing data.Historical data can initiatively send to long-range main website according to arranging, and also can send order inquiry by long-range main website.Between wireless communication module and electric energy meter, according to power industry standard DL/T 645-2007 multifunctional electric energy meter communication protocol, communicate by letter.Data acquisition and storing software flow process are shown in Fig. 7.
3) logout and reporting
Wireless communication module, according to the data such as electric energy meter electric weight, voltage, electric current, power, logout and status word that gather, has judged whether that alarm event occurs, if there is alarm event to occur, generates logout.According to the voltage of electric energy meter, electric current, power and electric weight increment, monitor in real time ammeter and whether have good luck normally, to guarantee the abnormal electric energy meter of real-time discovery circuit of metering.Inquiry the uncapping of electric energy meter, programmed events record, whether monitoring in real time there is the unauthorized ammeter operation of client, guarantees that measuring apparatus normally moves.Once generation alarm event, according to imposing a condition, can be reported to main website by alarm event in real time.Logout and report software flow to see Fig. 8.
4) local duty indication
Wireless communication module shows its duty by local LED working station indicator.By pilot lamp can judge module whether normal, the uplink communication state of power supply and with the communications status of electric energy meter.
The process that main website controls intelligent electric energy meter by wireless communication module is as follows: main website issues power to wireless communication module and controls input order and parameter, wireless communication module is monitored electric energy meter realtime power within the scope of institute's threshold value, when not when protecting electricity condition, power reaches limit value and automatically performs power definite value closed loop control function, by thrown round, judges successively and carries out trip operation.After power definite value control releasing or control time finish, wireless communication module allows user to close because power definite value is controlled the trip switch causing.
Month automatically controlled control procedure: main website successively to wireless communication module issue a moon electric flux definite value, float coefficient and the inferior parameter of control wheel arrange order, wireless communication module arranges a moon electric flux definite value after receiving these orders, coefficient and the inferior relevant parameter of control wheel float.Main website issues a month automatically controlled input order to wireless communication module, and wireless communication module shows " month automatically controlled input " state after receiving this order, and monitoring month electric flux, automatically performs a moon electric flux definite value closed loop control function.Automatically controlled releasing of the moon or the 24 o'clock the end of month, the trip switch that wireless communication module allows client to close and cause because the moon is automatically controlled.
Power purchase control control procedure: main website issues purchase of electricity (expense) control parameter to wireless communication module order is set, the parameters such as rate that comprise power purchase odd numbers, purchase of electricity (expense) value, alarm door limit value, tripping operation threshold value, each tariff period, wireless communication module is received after these parameters arrange order relevant parameter is set.Main website issues purchase of electricity (expense) control to wireless communication module and drops into order, and wireless communication module shows " power purchase control input " state after receiving this order, automatically performs purchase of electricity (expense) closed loop control function.Wireless communication module monitoring dump energy, as dump energy, (or electricity charge) are less than the alarming threshold value of setting, should be able to send tone alarm; When dump energy (or electricity charge) is less than the tripping operation threshold value of setting, by dropping into round action output relay, control corresponding controlled on-load switch.When purchase of electricity (expense) control is removed or power purchase makes dump energy (or electricity charge) be greater than tripping operation thresholding again, the trip switch that wireless communication module allows client to close and cause due to purchase of electricity (expense) control.
Claims (5)
1. for a wireless public network communication module for three-phase intelligent electric-energy meter, it is characterized in that: comprise
Microprocessor (1), sends the GPRS telecommunication circuit (2) of electric energy meter metrical information, storer (3), power circuit (4), electric energy meter interface (5) and the mode indicator (6) of storage of electrical energy table continuous data to main website;
Described microprocessor (1) is electrically connected to GPRS telecommunication circuit (2), storer (3), power circuit (4), electric energy meter interface (5) and positioning indicator (6) respectively, be used for according to the electric energy meter continuous data gathering, judge that whether electric energy meter work is normal, and the improper information exchange of electric energy meter work is crossed to GPRS telecommunication circuit (2) be sent to main website.
2. the wireless public network communication module for three-phase intelligent electric-energy meter according to claim 1, it is characterized in that: also comprise charge management circuit (7) and rechargeable battery (8), charge management circuit (7) is electrically connected to described rechargeable battery (8) and power circuit (4) respectively.
3. the wireless public network communication module for three-phase intelligent electric-energy meter according to claim 1, is characterized in that: also comprise SIM card seat (9), described SIM card seat (9) is connected with the SIM card interface of GPRS telecommunication circuit (2).
4. the wireless public network communication module for three-phase intelligent electric-energy meter according to claim 1, is characterized in that: described microprocessor is electrically connected to GPRS telecommunication circuit by UART serial ports.
5. the wireless public network communication module for three-phase intelligent electric-energy meter according to claim 1, is characterized in that: also comprise the hardware watchdog (10) being electrically connected to microprocessor (1).
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| CN201320586892.9U CN203502453U (en) | 2013-09-23 | 2013-09-23 | Wireless public network communication module for three-phase intelligent electric energy meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203985A (en) * | 2014-06-30 | 2015-12-30 | 深圳友讯达科技股份有限公司 | Electricity-meter strong and weak electricity isolation detection apparatus |
| CN107064622A (en) * | 2017-05-27 | 2017-08-18 | 湖南威胜信息技术有限公司 | The radio communication harvester and communication acquisition method of three-phase intelligent electric-energy meter |
| CN111025068A (en) * | 2019-12-24 | 2020-04-17 | 宁波三星医疗电气股份有限公司 | Method and device for reading load curve data of electric meter and electronic equipment |
-
2013
- 2013-09-23 CN CN201320586892.9U patent/CN203502453U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203985A (en) * | 2014-06-30 | 2015-12-30 | 深圳友讯达科技股份有限公司 | Electricity-meter strong and weak electricity isolation detection apparatus |
| CN105203985B (en) * | 2014-06-30 | 2018-05-25 | 深圳友讯达科技股份有限公司 | A kind of ammeter strong and weak electricity isolation detection device |
| CN107064622A (en) * | 2017-05-27 | 2017-08-18 | 湖南威胜信息技术有限公司 | The radio communication harvester and communication acquisition method of three-phase intelligent electric-energy meter |
| CN111025068A (en) * | 2019-12-24 | 2020-04-17 | 宁波三星医疗电气股份有限公司 | Method and device for reading load curve data of electric meter and electronic equipment |
| CN111025068B (en) * | 2019-12-24 | 2022-05-20 | 宁波三星医疗电气股份有限公司 | Ammeter load curve data reading method and device and electronic equipment |
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Address after: Pingshan Shenzhen city of Guangdong Province Jinniu Road 518118 No. 16 Huahan science and Technology Industrial Park, No. 2 building 218A Patentee after: SHENZHEN HEMEI GROUP CO.,LTD. Address before: 518053 Guangdong city of Shenzhen province Nanshan District Qiaoxiang road Oriental Science Park Branch building six floor Patentee before: Shenzhen Haoningda Meters Co.,Ltd. |
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Effective date of registration: 20170703 Address after: Pingshan Shenzhen city of Guangdong Province Jinniu Road 518118 No. 16 Huahan science and Technology Industrial Park, No. 2 building 218A Co-patentee after: HUIZHOU HAONINGDA TECHNOLOGY Co.,Ltd. Patentee after: SHENZHEN HEMEI GROUP CO.,LTD. Address before: Pingshan Shenzhen city of Guangdong Province Jinniu Road 518118 No. 16 Huahan science and Technology Industrial Park, No. 2 building 218A Patentee before: SHENZHEN HEMEI GROUP CO.,LTD. |
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