CN2639901Y

CN2639901Y - Electronic electric energy meter having remote control function

Info

Publication number: CN2639901Y
Application number: CN 03267465
Authority: CN
Inventors: 李成军
Original assignee: NANHAI HAODI INNOVATION SCIENC
Current assignee: NANHAI HAODI INNOVATION SCIENC
Priority date: 2003-07-11
Filing date: 2003-07-11
Publication date: 2004-09-08
Anticipated expiration: 2013-07-11

Abstract

The utility model relates to an electronic watt-hour meter for remote control, comprising a sensor element connected with electric circuits; the utility model is characterized in that the electric power consumption signal output terminal of the sensor is connected with the electric power measurement chip input terminal of the analog/digital conversion circuit; the pulse signal output terminal of the electric power measurement chip is connected with the input terminal of the single chip; the single chip, which is provided with an operating data display signal output terminal, is connected with a display via a drive circuit; an operation data output terminal is connected with a communication interface circuit with a communication interface; a switching control signal output terminal controls the power supply circuit via a switch. The utility model has the advantages of exchanging data with an automatic meter reading system, ensuring the coherence of the datum displayed on the watt-hour meter and reading via the automatic meter reading system, eliminating the error caused by the automatic meter reading and realizing the remote management and stopping-sending electricity control via the automatic meter reading system.

Description

Electronic electric energy meter with remote control function

Technical field

The utility model belongs to a kind of intelligent electronic electric energy meter.

Background technology

The Automatic meter reading system of resident's electric energy meter is used widely at present, existing Automatic meter reading system adopts the data acquisition modes of " pulse collection device+pulse electric energy table " more, owing to reasons such as the short circuit of electromagnetic interference (EMI), pulse interface, open circuit, loose contacts, regular meeting makes the shown data of step-by-step counting data that Automatic meter reading system gathers and electric energy meter inconsistent, causes bigger data acquisition error; And this class Automatic meter reading system majority only has " checking meter " function, and no management function can not be implemented effective management to defaulting subscriber, illegal user; The power supply department that has adopts the IC-card ammeter, though can reach automatic charge purpose, power supply department can't obtain user's electricity consumption situation and equipment running status information, and the IC-card ammeter is also so often by artificial destruction.

Summary of the invention

The technical problems to be solved in the utility model provides and a kind ofly can realize remote meter reading, management and stop sending electric control it by network service, and can eliminate the electronic electric energy meter of the error of checking meter.

The technical scheme that addresses the above problem is: the utility model is provided with the sensing element that is connected with power circuit, it is characterized in that: the electric energy consumption signal output part of sensing element is connected with the electric energy computation chip input end that is provided with mould/number conversion circuit, the electric energy computation chip pulse signal output end connects the single-chip microcomputer input end, single-chip microcomputer is provided with operational data shows signal output terminal, connects display by driving circuit; Be provided with the operational data output terminal, be connected with the communication interface circuit that is provided with communication interface; Also be provided with the switch controlling signal output terminal, connect current supply circuit by ON-OFF control circuit.

Principle of work of the present utility model is: the communication interface of this device is connected with the data communication line of Automatic meter reading system, can carry out exchanges data by network service and Automatic meter reading system: Automatic meter reading system can send command information to the single-chip microcomputer of electric energy meter, also can directly read ammeter data from communication interface.This device sensing element is input to electric energy computation chip with user's electric energy consumption signal and converts pulse signal to, be input to single-chip microcomputer again and count computing, single-chip microcomputer is kept at the counting operational data in the machine on the one hand and reads for Automatic meter reading system, be converted into shows signal output on the one hand, show power consumption by the driving circuit driving display, when Automatic meter reading system when this address electric energy meter sends read signal, single-chip microcomputer is promptly counted operation result to the power consumption in the memory and is input to Automatic meter reading system by communication interface and data line; Kilowatt meter reading-out system can be in advance stores user's the electrical information (prepayment electric expense) of purchasing in the single-chip microcomputer into, when user's power consumption surpasses permissible value, single-chip microcomputer promptly sends control signal, by the power supply of ON-OFF control circuit cut-out to the user, when electric energy meter or communication line break down, kilowatt meter reading-out system can not get back-signalling, promptly can obtain the information of device fails immediately, implements electric energy meter is managed automatically.

The utility model is with ic for energy metering, single chip circuit, display device, communication interface circuit is integrated in one, form intelligentized electronic electric energy meter, make it have the function that to carry out exchanges data by network service and Automatic meter reading system, and electric energy meter itself can be finished the counting calculating process to power consumption, the data that its display data presented and Automatic meter reading system read all are to be calculated by the single-chip microcomputer that is provided with in the electric energy meter to finish, guaranteed that electric energy meter video data and Automatic meter reading system read the consistance of information, eliminated the automatic data logging error, and can make Automatic meter reading system that it is realized telemanagement and stops sending electric control.

Description of drawings

Fig. 1, the utility model frame principle figure

Fig. 2, the utility model embodiment circuit diagram

Specific embodiments

This example is made core component with the AT89C52 single-chip microcomputer; Make electric energy computation chip with the integrated circuit ADE7755 that is provided with multiplier and mould/number conversion circuit, make electric energy consumption sensor element with the resistance that is connected in the power circuit, obtain current signal by its resistance drop, be input to electric energy computation chip ADE7755 input end 6 pin, simultaneously the power circuit voltage signal is input to electric energy computation chip input end 5 pin, calculate the electric energy consumption by the multiplier in the electric energy computation chip, be transformed into pulse signal through mould/number conversion circuit again, be input to single-chip microcomputer input end 14 pin by output terminal 22 pin.

This routine display is to adopt machinery meter kilsyth basalt, and single-chip

microcomputer output pin

16,17 pin are connected with bipolar pulse driving

circuit input end

3,7 pin that BH3023 forms respectively, and driving circuit output terminal 1, the 5 pin tool meter kilsyth basalt of meeting sb. at the airport drives its demonstration electric energy scale sign indicating number.

Single-chip

microcomputer output terminal

10,11,8 pin connect 1,4,3 pin of RS485 communication interface chip 65LBC184 integrated package, and 6,7 pin of this communication interface chip are the communication interface that can be connected with the communication data transmission line.

6,7 pin of single-chip microcomputer are the switch controlling signal output terminal, be connected with ON-OFF control

circuit input end

3,7 ends of forming by integrated circuit BH3023, the

output terminal

1,5 of ON-OFF control circuit is succeeded electric apparatus coil SW1, and the control contact of often opening of relay is connected in user's feed circuit.When having only the user to conform to the electricity consumption condition, single-chip microcomputer just can send control signal, and it is electric by ON-OFF control circuit relay coil to be got, normally opened contact closure, connecting subscribers participating feed circuit.

Display of the present utility model also can adopt charactron, liquid crystal or other display unit.

Claims

1, the electronic electric energy meter that has remote control function, be provided with the sensing element that is connected with power circuit, it is characterized in that: the electric energy consumption signal output part of sensing element is connected with the electric energy computation chip input end that is provided with mould/number conversion circuit, the electric energy computation chip pulse signal output end connects the single-chip microcomputer input end, single-chip microcomputer is provided with operational data shows signal output terminal, connects display by driving circuit; Be provided with the operational data output terminal, be connected with the communication interface circuit that is provided with communication interface; Also be provided with the switch controlling signal output terminal, connect feed circuit by ON-OFF control circuit.