CN2708568Y

CN2708568Y - Spread spectrum carrier data acquisition terminal

Info

Publication number: CN2708568Y
Application number: CN 03228206
Authority: CN
Inventors: 金中华; 金南洋
Original assignee: JINXHAN FUHUA ELECTRONIC INSTRUMENT CO Ltd WENZHOU
Current assignee: JINXHAN FUHUA ELECTRONIC INSTRUMENT CO Ltd WENZHOU
Priority date: 2003-01-13
Filing date: 2003-01-13
Publication date: 2005-07-06
Anticipated expiration: 2013-01-13

Abstract

The utility model discloses a spread spectrum carrier data acquisition terminal, comprising a main processor circuit, a storage circuit, a spread-spectrum carrier circuit and a display circuit. The main processor circuit comprises an SCM U1 ; the input terminal of the SCM U1 is connected with the impulse port of the user's electric meter; the output terminal of the SCM U1 is connected with a storage circuit U2 and the display circuit ; the P1 and P2 foot of the SCM U1 is connected with the spread-spectrum carrier circuit which has a spread-spectrum carrier frequency of 50-200KHz and automatically carries out the time-sharing measure for the connecting impulse electric meter; the user's data of energy consumption is displayed by an LCD in Chinese language, and the LCD can show by turns the user's electric quantity at the time of peak, bottom and common ; the spread spectrum carrier data acquisition terminal per se can be a virtual repeater, adopting the spread-spectrum carrier of a low-voltage electric power line to communicate with a concentrator, adopting a cable for a special use to communicate with the impulse electric meter. The spread spectrum carrier data acquisition terminal is applied to the low-voltage electric power line, realizing the concentrated meter reading for users and the power management and distribution.

Description

The extension frequency carrier data collection station

Technical field

The utility model relates to a kind of harvester that utilizes the low-voltage power line extension frequency carrier to carry out transfer of data.

Background technology

Power line carrier technology at home and abroad all is a kind of relatively more novel technology in the electric power management system, has more superiority than private-line mode, wireless mode.Private-line mode is owing to needing to lay special circuit, so cost is very high, difficult in maintenance.Be not suitable for China's national situation.Wireless mode is because " blind area " (so-called blind area can't receive signal in a certain position exactly) can appear in the diversity of installation site, so require very high to installation environment.Be unfavorable for the large tracts of land use.Existing extension frequency carrier circuit is made up of single-chip microcomputer, serial data memory, extension frequency carrier integrated circuit, power amplifier, coupler, triode, utilize the low-voltage power line extension frequency carrier to carry out transfer of data and overcome above-mentioned shortcoming, but owing to exist many interference in the low voltage electric network, transmission to data has produced influence, so anti-interference problem becomes the difficult point of low voltage power line carrier technology.

Summary of the invention

The purpose of this utility model is the antijamming capability that improves at the low-voltage power line transmitting data, and can gather 1-16 family power consumption, with the extension frequency carrier data collection station that reduces cost.

For achieving the above object, technical solution adopted in the utility model is that it comprises the extension frequency carrier circuit, the extension frequency carrier circuit is by single-chip microcomputer U3, serial data memory U4, extension frequency carrier integrated circuit U5, power amplifier U6, coupler B1, triode T1 forms, it also comprises main processor circuit, storage circuit U2, display circuit, main processor circuit is made up of single-chip microcomputer U1, single-chip microcomputer U1 input links to each other with the pulse mouth of electric electric supply meter, output connects storage circuit U2 and display circuit respectively, the P1 of single-chip microcomputer U1, the P2 pin also is connected with the extension frequency carrier circuit.

Advantage of the present utility model is as follows: channel adopts the low-voltage power line extension frequency carrier, and the spread spectrum frequency is 50～200KHZ.This frequency is fit to the electrical network situation of China very much, can effectively improve antijamming capability.The liquid crystal display of user power utilization The data LCD Chinese can take turns peak, the paddy of explicit user, the electric weight of flat day part automatically, can gather 1-16 family power consumption, and can change each time period.Reduced cost effectively.Terminal energy itself is virtual to be a repeater, has improved the transmission range of signal widely.The low-voltage power line extension frequency carrier is adopted in terminal and concentrator communication, adopts private cable with the communication of pulse ammeter.Owing to do not need to lay special circuit, installation and easy to operate has also reduced cost simultaneously.

Description of drawings

Shown in the drawings is the circuit theory diagrams of the utility model extension frequency carrier data collection station.

Embodiment

Extension frequency carrier data collection station shown in the drawings is made up of main processor circuit 2, storage circuit 3, extension frequency carrier circuit 1, display circuit 4 etc.Power circuit 5 output 5V operating voltages are for the each several part circuit working.Main processor circuit 2 is made up of single-chip microcomputer U1, model is AT89C52, single-chip microcomputer U1 input and 1-16 only the pulse mouth of electric electric supply meter link to each other, output connects storage circuit 3 and display circuit 4 respectively, it is that AT24C32 forms that storage circuit 3 is formed model by storage module U2, single-chip microcomputer U1 calculates electric weight at times to the pulse of each ammeter output respectively, and stores in the storage circuit 3, also controls display circuit 4 peak, paddy, the electric weight of flat day part of explicit user in turn simultaneously.The electric weight and the quantity of state of the peak of 3 pairs of every ammeters of storage circuit, paddy, flat day part store.The P1 of single-chip microcomputer U1, P2 pin also are connected with the extension frequency carrier circuit, and extension frequency carrier circuit 1 is that AT89C2051, serial data memory U4 model are that X5045, extension frequency carrier integrated circuit U5 model are that SSCP200, power amplifier U6 model are that TLE2301, coupler R1 turn ratio 17: 17, triode T1 model are that MMBT3904LT1 forms by single-chip microcomputer U3 model.The reception and the transmission of single-chip microcomputer U3 control carrier circuit, the address information of U4 storage carrier circuit, U5 is modulated into the extension frequency carrier signal of 50-200KHZ to binary signal, power amplifier U6, and the extension frequency carrier signal amplifies after coupler B1 is coupled on the single phase alternating current (A.C.) power line through U6.After amplifying the extension frequency carrier signal of coming through the B1 coupling, T1 is input to the SI pin of U5.

Single-chip microcomputer U1 carries out electric weight accumulative total according to the pulse constant of connecing ammeter to every ammeter, according to clock circuit electric weight is divided into peak, paddy, flat three periods and stores respectively in the storage circuit 3, also control display circuit 4 peak, paddy, the electric weight of flat day part of explicit user in turn simultaneously.Carrier circuit is in the monitoring wait state usually, there is the extension frequency carrier of 50-200KHZ signal to transmit on the power line when listening to, then through being input to the base stage of T1 after the coupler B1 coupling, after T1 amplifies, output to the SI pin of U5 by collector electrode, U5 is demodulated to binary signal to the extension frequency carrier signal, and output to the P6 pin of U3 by the P7 pin, U3 is sent to binary signal the P1 pin of U1 again by P3, after U1 explains the binary signal that receives, order this needed data to be transferred to the P4 pin of U3 by the P2 pin with binary form again, output to the P8 pin of U5 again by the P5 pin, after U5 is modulated into the extension frequency carrier signal of 50-200KHZ to the binary signal that returns, output to the IN pin of amplifying circuit U6 by the S0 pin, output to coupler B1 by P9 and P10 pin after U6 amplifies, B1 is coupled to the extension frequency carrier signal of 50-200KHZ on the power line again, receives and process of transmitting thereby finish one.Realized the transmission of data on low-voltage power line.

Claims

1, a kind of extension frequency carrier data collection station, it comprises extension frequency carrier circuit (1), extension frequency carrier circuit (1) is by single-chip microcomputer U3, serial data memory U4, extension frequency carrier integrated circuit U5, power amplifier U6, coupler B1, triode T1 forms, it is characterized in that it also comprises main processor circuit (2), storage circuit (3), display circuit (4), main processor circuit (1) is made up of single-chip microcomputer U1, single-chip microcomputer U1 input links to each other with the pulse mouth of electric electric supply meter, output connects storage circuit (3) and display circuit (4), the P1 of single-chip microcomputer U1 respectively, the P2 pin also is connected with extension frequency carrier circuit (1).