CN2500952Y

CN2500952Y - Autocontrolling system of centralized managing decentralized controlling for combined air conditioner

Info

Publication number: CN2500952Y
Application number: CN 00220852
Authority: CN
Inventors: 何广宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-26
Filing date: 2000-06-26
Publication date: 2002-07-17
Anticipated expiration: 2010-06-26

Abstract

A combinational automatic control system of concentrated management and decentralized control for air-conditioning of the utility model is characterized in that: systems such as combinational air-conditioning and refrigeration equipment distributed dispersedly are respectively provided with automatic control device. The information collected by the automatic control device is transmitted to the central management workstation through a local area communication network, then each command is conveyed to the corresponding automatic control device after the information is processed by the central management workstation to control the working of each air-conditioning and refrigeration system, therefore largely enhancing the control precision of upwind parameter of the combinational air-conditioning, improving the reliability and stability meanwhile, and realizing the unattended operation, as well as reaching the characteristic of automatic control. The automatic control device mounted on the air-conditioning and refrigeration system can be utilized individually to realize single control of single machine.

Description

The robot control system(RCS) of assembled air-conditioner centralized management decentralised control

The utility model relates to a kind of robot control system(RCS) of assembled air-conditioner centralized management decentralised control.

Continuous development along with microelectric technique, improving constantly of particularly information, communication, control technology, in general air-conditioning, refrigerator system, air-conditioning, refrigeration machine equipment and self-con-tained unit thereof all should be installed together, and self-con-tained unit can directly carry out field control to its plant equipment and obtain effect preferably.But for some heavy constructions, be installed in different local as many, the big polydispersion of air-conditionings such as power plant, pharmaceutical factory, textile mills and refrigeration plant, bring inconvenience to management, and can not realize automatic management, cause the waste of many human and material resources, financial resources.

The purpose of this utility model just provides the robot control system(RCS) of a kind of assembled air-conditioner centralized management, decentralised control.The air-conditioning and the refrigeration plant that are dispersed in are everywhere installed self-con-tained unit respectively, and by corresponding LAN self-con-tained unit everywhere is connected with the central management work station, the information processing by the central management work station, control the purpose of the centralized management decentralised control that realizes assembled air-conditioner.

The robot control system(RCS) that the purpose of this utility model is achieved in that assembled air-conditioner centralized management decentralised control partly is made up of central management work station, the self-con-tained unit and the LAN that are installed in each system of air-conditioning.It is characterized in that: be dispersed in everywhere each air-conditioning and the self-con-tained unit on the refrigeration system to the various information of system acquisition, and pass to the central management work station by the various information that LAN will collect.The central management work station carries out information processing to the various information of collecting, and then the instruction after the information processing is passed to self-con-tained unit in each system, and system is carried out automatic management.

The utility model compared with prior art has following advantage: air-conditioning and microelectric technique are combined together, self-con-tained unit can be with the various parameters and the coupling adjusting of corresponding executing agency of air-conditioning system, improved the control accuracy of air-conditioning air supply parameter, because this self-con-tained unit automaticity height, stability, reliability is better, can realize unattended.

Below in conjunction with accompanying drawing the utility model is done further narration.

Fig. 1 is the structural representation of the robot control system(RCS) of the utility model assembled air-conditioner centralized management decentralised control.

Fig. 2 is the schematic diagram of the robot control system(RCS) of the utility model assembled air-conditioner centralized management decentralised control.

The program flow diagram that Fig. 3 utilizes NMI to carry out for the one-level house dog.

Fig. 4 recovers on-the-spot program flow diagram with Watchdog.

Fig. 5 is the circuit connection diagram of the robot control system(RCS) of the utility model assembled air-conditioner centralized management decentralised control.

1, pressure fan fault-signal 2, return fan fault-signal 3, standby/as to use interconnected signal 4, warning output 5, air return system 6, exhaust system 7, air inlet system 8, primarily efficient filter 9, show cooling system 10, pipe-line system 11, heating system 12, filtration system 13, humidification system 14, supply air system 15, self-con-tained unit 16, central management workstation1 7, office's city communication network

As can be seen from Figure 1, assembled air-conditioner partly is made up of pipe-line system 10, air inlet system 7, air return system 5, exhaust system 6, filtration system 8, table cooling system 9, heating system 11, humidification system 13, supply air system 14 etc., the temperature of assembled air-conditioner, humidity control principle are: when environment temperature is lower than design temperature, heating system work, improve wind pushing temperature, and utilize humidification system to carry out humidity regulation; When environment temperature is higher than design temperature, the table cooling system is started working, regulate wind pushing temperature, and regulate the automatic control of the humiture that realizes blowing by humidification system, filtration system is used for improving the clean quiet degree of air-supply, sets according to air quantity and regulates the size of motor speed with the control air output, variation according to environment temperature, automatically regulate new/return air door ratio, under the situation that guarantees new wind content 〉=20%, make air-conditioning operate in the maximum energy-saving state all the time.

The robot control system(RCS) of assembled air-conditioner centralized management decentralised control described in the utility model as can be seen from Figure 5, by self-con-tained unit 15, local communication network 17 and central authorities' 16 compositions in work of treatment station, a self-con-tained unit 15 promptly all is installed on each assembled air-conditioner and refrigeration system, 15 pairs of native systems of self-con-tained unit carry out Information Monitoring control, and information is sent to central authorities works of treatment station 16 by local communication network 17, handle the information of each system at central authorities work of treatment station 16 again, and then send instruction to the self-con-tained unit 15 of each system, coordinate the work of each system, air inlet system 7, air return system 5, exhaust system 6 can be regulated wind automatically in proportion according to the instruction of self-con-tained unit 15, mix wind after preliminary the filtration, by table cooling system 9, heating system 11, the adjusting of humidification system 13, after reaching the requirement that sets, through supply air system 14 blown in each controlled room the operation under robot control system(RCS) control of whole state again.

The operation principle of assembled air-conditioner self-con-tained unit 15: signals such as tested, controlled various parameters of temperature, humidity, differential pressure, detect through sensor, convert 0-10mA signal or switching signal to by transmitter, be transferred to A/D converter through I/V, CPU patrols and examines each signal, after processing such as digital filtering, becoming parameter PID calculates, compares, judges, provide control signal corresponding then, remove to control each corresponding self-con-tained unit by 8 road D/A converters (can expand) and 32 road D0 (can expand) output, to realize best automatic adjusting and control.

The used self-con-tained unit of each system of combined type air conditioner 15 not only can link to each other with central management workstation1 6 but also can work independently, and realized unit control.Computer master controller part can adopt (1) STD5024 as mainboard in this self-con-tained unit 15, by CPU template I/V signal conversion module, the A/D template, the D/A template, the switching value input, compositions such as output template, the microprocessor of main frame template adopts Z64180, template has 32KX8RAM, 96kx8EPROM, is furnished with a RS-232 and a RS-485 interface, the A/D input template has 32 tunnel single-ended analog input signals, the D/A input module has 8 tunnel while corresponding current 4-20MA, voltage 0-5V output signal, the switching value output template has the output of 32 way switch amounts, and each output signal has latch function.(2) STD5087 is equipped with STD-5793 system support plate as cpu motherboard, STD-5785VGA adapter, STD-5185 electronics plate and I/O feature board.(3) the DDC controller of Honeywell company.(4) the DDC controller of Satchwell company.(5) PLC Programmable Logic Controller, described self-con-tained unit 15 are provided with the system simulation figure that shows each system's actual condition in the air-conditioning system running, and are furnished with that controlled parameter artificially sets value function, automatic/hand switches and manual control function.

Central management workstation1 6 in the robot control system(RCS) of assembled air-conditioner centralized management decentralised control described in the utility model adopts industrial control computer, and be equipped with distributed control of perfect DCS and management software, in conjunction with stable, reliably, industrial local communication network easy to install, be linked to be an integral body being distributed in on-the-spot self-con-tained unit 15 everywhere, central management workstation1 6 both can be by the parameter of each system of communication detection, can realize far distance controlled to each field apparatus again, when a certain alarm point of a certain system provides signal, central management workstation1 6 can in time show this alarm point, thereby the management and the use of whole air conditioner system have been made things convenient for, device context self-con-tained unit 15 used application software all adopt EPROM, EEPROM solidifies operation, thereby improve the reliability of whole system, because systems soft ware utilization fuzzy control and adaptive mode are controlled assembled air-conditioner, improved the degree of regulation of air-conditioning air supply parameter: temperature≤± 1 ℃, humidity≤± 5%, pressure reduction≤± 10Pa, and can be according to seasonal variations, can realize that operating mode automaticallyes switch, automatically operation, and can realize unattended.

Adopt house dog to utilize NMI to carry out break in service and recover phenomenon, be used to improve system's operational reliability, also can adopt Watchdog to recover the program of phenomenon, be used for further improving reliability of system operation.

Claims

1, a kind of robot control system(RCS) of assembled air-conditioner centralized management decentralised control, it is by the self-con-tained unit that is installed in the systems such as each combined type air conditioner and refrigeration, local communication network and central management work station are electrically connected in proper order, it is characterized in that: be installed in the self-con-tained unit in the systems such as each assembled air-conditioner and refrigeration, link to each other with on-the-spot plant equipment, finish direct control to equipment, the local communication network is connected self-con-tained unit with the central management work station, the central management work station is by local communication network and on-the-spot self-con-tained unit communication, self-con-tained unit is carried out data acquisition, remote parameter modification and control, self-con-tained unit in each system also can break away from central management work station independent operating, carries out the control of unit list.

2, the robot control system(RCS) of assembled air-conditioner centralized management decentralised control according to claim 1, it is characterized in that: the local communication network between the self-con-tained unit of field apparatus and the central management work station adopts the RS-485 interface.

3, the robot control system(RCS) of assembled air-conditioner centralized management decentralised control according to claim 1, it is characterized in that: the self-con-tained unit that is installed in the systems such as each assembled air-conditioner and refrigeration is provided with the I/O hardware that is used to calculate the computer master controller of control and is used for the signal conversion, described self-con-tained unit is provided with air-conditioning system operation simulation drawing, also is furnished with the automatic/hand change-over switch.

4, the robot control system(RCS) of assembled air-conditioner centralized management decentralised control according to claim 1 is characterized in that: be installed in console controller employing STD5024CPU bus type industrial computer, STD5087CPU bus industrial computer, the DDC controller of Honeywell company, the DDC controller and the PLC Programmable Logic Controller of Sacthwell company on the self-con-tained unit in the systems such as each assembled air-conditioner and refrigeration.