CN2747606Y

CN2747606Y - Intelligent multi-circuit controller

Info

Publication number: CN2747606Y
Application number: CN 200420092917
Authority: CN
Inventors: 赵春江; 乔晓军; 王成; 焦春岩; 王纪华; 杨宝祝
Original assignee: Beijing Research Center for Information Technology in Agriculture
Current assignee: Beijing Research Center for Information Technology in Agriculture
Priority date: 2004-09-23
Filing date: 2004-09-23
Publication date: 2005-12-21
Anticipated expiration: 2014-09-23

Abstract

The utility model discloses an intelligent multi-circuit controller, comprising a control module 1 composed of a 89S52 single chip computer and a peripheral I<2>c data bus circuit thereof, an RS485 network communication interface circuit 2, a circuit board 3, an LCD liquid crystal display 4, a dial-out code plate 5, a key 6, a plastic case 7, an input interface 8, and an output interface 9. The utility model can be applied in multiple fields, such as agriculture, industry, life, etc. An intelligent multiple-circuit control system is composed of a circumscribed sensor and a system actuating mechanism to realize automatic measurement and control of controlled quantity.

Description

The intelligence multiloop controller

Technical field

The utility model can be applicable to that agricultural, industry and life etc. are multi-field, and external sensor and system actuator are formed intelligent multiloop control system, realizes automatic measurement and control to controlled variable.

Background technology

There is following problem in existing loop control unit:

1, its system of the multiloop controller that function is stronger constitutes that complicated volume is big, cost is high, and operation and maintenance requires high, can only use and large scale industry control field, is difficult to promote.

2, simple its input of loop control unit, output channel are few, and institute's sensor type that connects is single and measurement range is little, and output type is single, can only be applied to specific environment, uses very flexible.

3, its human-computer interaction function of existing loop control unit is poor,, Presentation Function is single, operates dumbly, needs to use host computer carry out function setting and parameter modification etc., makes troubles for user's use.

4, its system expandability of existing loop control unit is poor, must pass through a series of loaded down with trivial details processes when needing to enlarge its range of control, and needs special technician.

Summary of the invention

The purpose of this utility model is to release a kind of have polytype IO interface, good man-machine interaction interface, intelligent multiloop controller that extensibility is strong.This intelligence multiloop controller inside has CPU, real-time clock, data-carrier store, analog to digital converter, LCD LCD, RS485 network communication interface, driver, photoisolator, relay etc. in the same way, the value that can measure, show, store the sensor that connects, and can control automatically by measured value and the relatively realization that sets scope by network communication interface and computing machine swap data.Have steadily in the long term work, be applicable to multiple occasion, with low cost, volume is little, use is flexible, characteristics such as easy to operate.

The technical scheme that its technical matters that solves the utility model adopts, intelligent multiloop controller is by 89S52 single-chip microcomputer and peripheral I thereof ²Control module (1), RS485 network communication interface circuit 2, circuit board 3, LCD LCD 4, dial 5, button 6, plastic casing 7, input interface 8, output interface 9 mutual group that the C data bus circuit constitutes are integral; Control module 1, RS485 network communication interface circuit 2, input interface 8, output interface 9 are welded on the circuit board 3, are fixed on the rear portion of plastic casing 7 with key screw circuit board 3, and LCD LCD 4, dial 5 and button 6 are fixed on the front portion of plastic casing 7.

Its object construction front elevation is seen Fig. 1, and side view is seen Fig. 2.

The circuit part of intelligence multiloop controller is made of jointly the RS485 network interface of single-chip microcomputer 89S52, house dog MAX813L, real-time clock PCF8563, data-carrier store AT24C64, analog to digital converter PCF8591, driver 74HC07AP, photoisolator TLP521-4, relay, digital sensor interface, LCD LCD LCM067, dial, button, the expansion of 75LBC184 chip in the same way; 89S52 and internal software are as the control core of total system, and house dog is connected the reseting pin of 89S52, and real-time clock, data-carrier store, analog to digital converter pass through I ²The C data bus is connected to the virtual I of 89S52 ²C interface, the analog sensor interface is connected to the analog to digital converter input end, the output signal of single-chip microcomputer is gone into photoisolator TLP521-4 through driver 74HC07AP in the same way is laggard, relay is received photoisolator TLP521-4 output terminal, the control output interface is connected to relay output end, digital sensor interface, LCD LCD, dial and button are connected to 89S52, and RS485 network interface extended chip 75LBC184 is connected to the 89S52 serial ports.Its circuit connection diagram is seen Fig. 3, and schematic diagram is seen Fig. 4.

Single-chip microcomputer is selected 51 series of products 89S52 for use, and the program storage that has 8kB repeatedly to programme in the sheet need not be expanded external program memory; Serial ports uses 75LBC184 to be extended to RS485 lightning protection network interface, realizes the data transmission with host computer.I ²C bus real-time clock PCF8563 provide time reference for system.I ²C bus data storer AT24C64 can store the various parameters of setting and gather the data that calculate.House dog MAX813L is used to strengthen anti-interference, and system can recover after meeting the strong jamming collapse voluntarily.Man-machine interface is made up of dial, button, LCM067 LCD, finishes the roll display, the indication of communication state etc. of setting, image data and time of selection, the controlled variable scope of setting, the IO channel of various loCal numbers.Control circuit is made up of driver 74HC07AP, photoisolator TLP521-4 and relay in the same way, realizes control automatically.

This controller connects extraneous sensor by input interface, reads in its data and it is compared with the scope of setting, and determines the Push And Release of corresponding relay, thereby realizes automatic control function by external topworks.The power supply of system leaves 220V alternating current interface, 9-24V DC interface.

The beneficial effects of the utility model:

1, realized measurement, demonstration, storage and control, be applicable to multiple intelligence control system various environmental parameters, install and use flexibly and volume little.

2, adopt dial, button, LCD to constitute good man computer interface, and can pass through the RS485 network interface with the host computer swap data, easy for operation.

3, owing to adopted I ²The LCD LCD of the real-time clock of C data bus, data-carrier store, analog to digital converter and 3 line data transfer modes, system have little, the connection line characteristic of simple each other of volume.

Description of drawings

Fig. 1 is an object construction front elevational schematic of the present utility model.

Fig. 2 is an object construction schematic side view of the present utility model.

Fig. 3 is that system of the present utility model forms structural representation.

Fig. 4 is a schematic diagram of the present utility model.

Embodiment

As shown in Figure 1, input interface 8 connects extraneous sensor, output interface 9 welding system topworkies; Control module 1, RS485 network communication interface circuit 2, input interface 8, output interface 9 are welded on the circuit board 3, are fixed on the rear portion of plastic casing 7 with key screw circuit board 3, and LCD LCD 4, dial 5 and button 6 are fixed on the front portion of plastic casing 7.

Man-machine interface is made up of dial 5, button 6, LCM067 LCD 4, finishes the roll display, the indication of communication state etc. of setting, image data and time of selection, the controlled variable scope of setting, the IO channel of various loCal numbers.System can receive various command and send the data of gathering by RS485 network communication interface circuit 2 and computing machine communication.

Control module 1 is made of 89S52 single-chip microcomputer and peripheral circuit thereof, comprises I ²C bus real-time clock PCF8563, I ²C bus analog to digital converter PCF8591, I ²C bus data storer AT24C64, house dog MAX813L, digital sensor interface, driver 74HC07AP, photoisolator TLP521-4, relay etc. in the same way.Control module is as the control core of total system, and it reads in extraneous sensor values by digital sensor interface and analog to digital converter, then these values is compared with the scope of setting, and realizes automatic control function.

Claims

1. intelligent multiloop controller is characterized in that by 89S52 single-chip microcomputer and peripheral I thereof ²Control module (1), RS485 network communication interface circuit (2), circuit board (3), LCD LCD (4), dial (5), button (6), plastic casing (7), input interface (8), output interface (9) mutual group that the C data bus circuit constitutes are integral; Control module (1), RS485 network communication interface circuit (2), input interface (8), output interface (9) are welded on the circuit board (3), be fixed on the rear portion of plastic casing (7) with key screw circuit board (3), LCD LCD (4), dial (5) and button (6) are fixed on the front portion of plastic casing (7).

2. intelligent multiloop controller as claimed in claim 1 is characterized in that circuit part is made of jointly the RS485 network interface of single-chip microcomputer 89S52, house dog MAX813L, real-time clock PCF8563, data-carrier store AT24C64, analog to digital converter PCF8591, driver 74HC07AP, photoisolator TLP521-4, relay, digital sensor interface, LCD LCD LCM067, dial, button, the expansion of 75LBC184 chip in the same way; 89S52 and internal software are as the control core of total system, and house dog is connected the reseting pin of 89S52, and real-time clock, data-carrier store, analog to digital converter pass through I ²The C data bus is connected to the virtual I of 89S52 ²C interface, the analog sensor interface is connected to the analog to digital converter input end, the output signal of single-chip microcomputer is gone into photoisolator TLP521-4 through driver 74HC07AP in the same way is laggard, relay is received photoisolator TLP521-4 output terminal, the control output interface is connected to relay output end, digital sensor interface, LCD LCD, dial and button are connected to 89S52, and RS485 network interface extended chip 75LBC184 is connected to the 89S52 serial ports.