CN1728502A

CN1728502A - Device for remote monitoring and controlling power distribution

Info

Publication number: CN1728502A
Application number: CN 200510082894
Authority: CN
Inventors: 郑结明; 胡国攀; 王庆山
Original assignee: 赵勤彪
Priority date: 2005-07-13
Filing date: 2005-07-13
Publication date: 2006-02-01

Abstract

The device includes power circuit, voltage sample circuit, current switching circuit, selective switch circuit, measuring circuit, computing statistics CPU, main controller CPU of collection controller, reset circuit, memory circuit, real time circuit, communication control CPU, and isolation circuit etc. Characters are that following circuits are connected between the voltage sample circuit and signal transmitter receiver set: measuring circuit, isolation circuit, computing statistics CPU, main controller CPU of collection controller, communication control CPU etc. The selective switch circuit is connected to the current switching circuit and the measuring circuit. The reset circuit, memory circuit, and real time circuit are connected to main controller CPU of collection controller respectively. The invention possesses features of simple structure, stable operation, and easy of use. The device provides favorable condition for managing equipment of power distribution scientifically.

Description

Device for remote monitoring and controlling power distribution

Technical field

The invention belongs to electrical equipment technical field, particularly relate to a kind of device that can realize the remote monitoring distribution.

Background technology

In the prior art, the controller switching equipment that enterprise uses is all safeguarded regularly and is checked that in a single day controller switching equipment breaks down by the professional, and the maintenance personal need be through just finding the place of fault and keeping in repair for a long time; Because the device of automatic monitoring is not set on controller switching equipment at present, thereby can't accurately and timely grasp the operation conditions of controller switching equipment, enterprise is difficult to realize the management of science that controller switching equipment is carried out, the normal use that the maintenance levels of equipment is not high, influenced controller switching equipment.

Summary of the invention

The object of the present invention is to provide a kind of device of remote monitoring distribution simple in structure, stable, easy to use.

The objective of the invention is to adopt such technical solution to realize: it comprises power circuit, voltage sampling circuit, current converter circuit, selected on-off circuit, metering circuit, counting statistics CPU, the acquisition controller master cpu, reset circuit, memory circuit, real-time circuit, Communication Control CPU, buffer circuit and communication device, it is characterized in that being orderly connected with metering circuit between described voltage sampling circuit and the signal receiving/transmission device, buffer circuit, counting statistics CPU, the acquisition controller master cpu, Communication Control CPU and buffer circuit, described selected on-off circuit links with current converter circuit and metering circuit respectively, described reset circuit, memory circuit and real-time circuit link with the acquisition controller master cpu respectively.

Because sample circuit of the present invention can send sampled signal to counting statistics CPU, acquisition controller master cpu and Communication Control CPU, the power distribution information that can in time sample circuit be obtained under the control of working procedure is sent to signal receiving/transmission device, and send to the Long-distance Control station by signal receiving/transmission device, the Long-distance Control station can be grasped the operation conditions of controller switching equipment in real time, and can send control command as required, thereby provide advantage for the management of the science of controller switching equipment.

In conjunction with the accompanying drawings and embodiments, it is as follows that the invention will be further described:

Description of drawings

Fig. 1 is a circuit block diagram of the present invention.

Fig. 2 is the circuit block diagram of monitoring station.

Fig. 3 is power principle figure of the present invention

Fig. 4 is one of local circuit schematic diagram of the present invention

Fig. 5 is a metering circuit schematic diagram of the present invention

Fig. 6 is two of a local circuit schematic diagram of the present invention

Fig. 7 is one of local circuit schematic diagram of monitoring station

Fig. 8 is the power supply and the carrier circuit schematic diagram of monitoring station

Embodiment

In Fig. 1, it comprises power circuit the present invention, voltage sampling circuit, current converter circuit, selected on-off circuit, metering circuit, counting statistics CPU, the acquisition controller master cpu, reset circuit, memory circuit, real-time circuit, Communication Control CPU, buffer circuit and communication device, be orderly connected with metering circuit between described voltage sampling circuit and the signal receiving/transmission device, buffer circuit, counting statistics CPU, the acquisition controller master cpu, Communication Control CPU and buffer circuit, described selected on-off circuit links with current converter circuit and metering circuit respectively, described reset circuit, memory circuit and real-time circuit link with the acquisition controller master cpu respectively; The acquisition controller master cpu can read the clock of clock circuit, the condition and the Communication Control CPU that set according to working procedure transmit information, the acquisition controller master cpu carries out storage, statistical analysis, can send to the Long-distance Control main website by signal receiving/transmission device to the abnormal work situation data, and shows on the display interface at Long-distance Control station and warning; And the Long-distance Control station is to the signal receiving/transmission device sending controling instruction, and the acquisition controller master cpu can start working procedure according to the requirement of control command, finish the desired task of instruction; Control program of the present invention adopts assembler language to write.

Situations such as abnormal work situation of the present invention is meant power supply after the voltage phase failure, power failure, the power failure, voltage negative phase sequence, RS485 is unusual, overload is unusual, transformer excess load, idle overcompensation, idle undercompensation, transformer temperature anomaly, overvoltage; The multiplexing electric abnormality situation can be alarmed by the remote monitoring main website, thereby integrated package can greatly improve accuracy, real-time and the reliability of controller switching equipment monitoring.

Fig. 3 is the power circuit of acquisition controller, and the three paths of independent power supply can be provided, and exports after the rectifying and wave-filtering voltage stabilizing then of three-phase 220 voltages input process transformer transformation, and voltage-stabiliser tube is LM2940.

In Fig. 4, it is P89C668 that acquisition controller master cpu of the present invention (U3) adopts model, and the peripheral circuit element formation, and its pin 2, pin 3, pin 4 join with memory circuit, and memory circuit mainly is made of model FM24C16 integrated package and peripheral resistance; The pin 5 of described integrated circuit U3, pin 6 join with real time clock circuit, and real time clock circuit is made of integrated package U2 and peripheral circuit element thereof, and integrated package U2 selects the integrated package of PCF8563 model for use; 15 1 branch roads that reset of the pin of described integrated circuit U3 join, reset circuit mainly is made of integrated package U6 and peripheral circuit element thereof, integrated package U6 selects the integrated package of 4060 models for use, pin 7 and another of integrated circuit U3 branch road that resets joins, this branch road that resets mainly is made of integrated package U26 and peripheral circuit element thereof, integrated package U6 selects the integrated package of MAX813L model for use, and reset circuit is made up of the branch road that resets of two parallel connections, thereby constitutes a double reset system; The pin 40 of described integrated circuit U3, pin 41, pin 42, pin 43 are connected with peripheral short circuit wire jumper, realize the hardware capability selection function; The pin 36 of described integrated circuit U3, pin 37 are connected with light idol GE5, GE6, realize the input measurement of semaphore; Carrier circuit of the present invention adopts model ST7537 by carrier chip (U7), and the peripheral circuit formation, during the signal input, (comprise amplifier U8B, model TL072 and peripheral inductance L 1, capacitor C 32 by filter circuit, C35 constitutes) to signal filtering, then pass through amplifier U8A, model TL072, signal is amplified, be input to U7 and carry out demodulation, during signal output, U7 modulates signal by carrier chip, then output to U9 and carry out signal amplification output, the U9 model is TDA7233D.

In Fig. 5, metering circuit of the present invention is made of computation chip U18, U19 and peripheral circuit, and U18, U19 model are AD7537, by metering CPU control, and to measuring CPU output pulse for the metering circuit computational analysis; Described integrated circuit U10 and peripheral circuit are one-5V voltage pio chips, and the U10 model is ICL7660; Described integrated circuit U12 and peripheral circuit are 485 communication chips, and the U12 model is 75LBC184.

In Fig. 6, voltage sampling circuit of the present invention, current sampling circuit purpose are measured for computation chip for suitable circuit is provided; Described acquisition controlling CPU (U22) adopts chip AT89C52, and peripheral circuit constitutes, its pin 26, pin 27, pin 28 are connected with computation chip by light idol GE7, GE8, GE12, are used to receive the pulse of computation chip so that calculate data such as relevant voltage, electric current, active power; The pin 6 of described integrated circuit U22, pin 13 are connected with the phase place decision circuitry, and the phase place decision circuitry is made of U27, GE13, GE14 and peripheral circuit; The pin 14 of described integrated circuit U22, pin 15, pin 17 are connected with multidiameter option switch U17, U20, U21 by light idol GE9, GE10, GE11, are used for switching channel, so that calculate out of phase voltage, electric current, active power data.Communication Control CPU of the present invention (U14) adopts chip AT89C2051, and its pin 17, pin 18 can be controlled communication channel, can control carrier chip communication and master cpu communication respectively; The pin 2 of described integrated circuit U22, pin 3 are connected with switching channel U13, are used for transceive data, and the U13 model is 74HC125.

Claims

1, device for remote monitoring and controlling power distribution, comprise power circuit, voltage sampling circuit, current converter circuit, selected on-off circuit, metering circuit, counting statistics CPU, the acquisition controller master cpu, reset circuit, memory circuit, real-time circuit, Communication Control CPU, buffer circuit and communication device, it is characterized in that being orderly connected with metering circuit between described voltage sampling circuit and the signal receiving/transmission device, buffer circuit, counting statistics CPU, the acquisition controller master cpu, Communication Control CPU and buffer circuit, described selected on-off circuit links with current converter circuit and metering circuit respectively, described reset circuit, memory circuit and real-time circuit link with the acquisition controller master cpu respectively.

2, device for remote monitoring and controlling power distribution according to claim 1, it is characterized in that it is P89C668 that described acquisition controller master cpu (U3) adopts model, and peripheral circuit element constitutes, its pin 2, pin 3, pin 4 join with memory circuit, the pin 5 of integrated circuit U3, pin 6 join with real time clock circuit, pin 15 reset circuits join, the pin 40 of described integrated circuit U3, pin 41, pin 42, pin 43 are connected with peripheral short circuit wire jumper, and the pin 36 of described integrated circuit U3, pin 37 are connected with light idol GE5, GE6.

3, device for remote monitoring and controlling power distribution according to claim 1 is characterized in that described real time clock circuit is made of integrated package U2 and peripheral circuit element thereof, and integrated package U2 selects the integrated package of PCF8563 model for use.

4, device for remote monitoring and controlling power distribution according to claim 1 it is characterized in that described carrier circuit adopts model ST7537 by carrier chip (U7), and peripheral circuit constitutes.

5, device for remote monitoring and controlling power distribution according to claim 1, it is characterized in that described metering circuit is made of computation chip U18, U19 and peripheral circuit, U18, U19 model are AD7537, by metering CPU control, and to measuring CPU output pulse for the metering circuit computational analysis; Described integrated circuit U10 and peripheral circuit are one-5V voltage pio chips, and the U10 model is ICL7660; Described integrated circuit U12 and peripheral circuit are 485 communication chips, and the U12 model is 75LBC184.

6, device for remote monitoring and controlling power distribution according to claim 1, it is characterized in that described voltage sampling circuit U22 adopts chip AT89C52, and peripheral circuit constitutes, its pin 26, pin 27, pin 28 are connected with computation chip by light idol GE7, GE8, GE12, the pin 6 of U22, pin 13 are connected with the phase place decision circuitry, and the pin 14 of described integrated circuit U22, pin 15, pin 17 are connected with multidiameter option switch U17, U20, U21 by light idol GE9, GE10, GE11.

7, device for remote monitoring and controlling power distribution according to claim 1, it is characterized in that described Communication Control CPU adopts integrated package U14, chip model AT89C2051, its pin 17, pin 18 can be controlled communication channel, can control carrier chip communication and master cpu communication respectively.