I.     Introduction

The modern institutions of higher learning normally contain main education campus, office building, hospital; library, laboratory building, Lecture Theater, canteen and sports ground, and are equipped with advanced teaching equipments and campus communication network. That leaves increasingly high requirement on equipment intelligence, especially in the campus with large area where the control points are usually scattered and huge wasting is caused due to inconvenient management. The traditional control cannot realize well management on the above requirement, so the problems can only be solved by intelligent control system.

II.      Project Introduction

WIFONIC Smart Automation is designated to adopt master control, sub-control in each room, timing control, scene control, and air-conditioner remoter control. The control objects include lights, air-conditioners, fans, and power of central control in the classroom and provide open port to connect with the third party system. It could save the energy consumed by lighting and air-conditioner and increase flexibility and reliability as well.

III.   Analysis on Requirement of Modern Teaching Building to Intelligent Control System

Because the college’s function is for education, some students always forget to turn off the lights or air-conditioner before leaving (or set very low temperature) and power supply of other equipments, so as to cause large waste due to light on and idle operation of air-conditioner. As some of the organization pay the light bill for the entire campus like staff colony, hostel area etc. there are lots of misuse of electricity and can be saved the organization a lot.

Among all construction material consumption, air-conditioner and lighting account for the highest proportion, so it would be effective energy conservation method aiming at those two parts.

1) The teaching building must provide a well study environment so that the students and teachers could feel comfortable in the classroom and reduce “light pollution”.

2) It costs a lot due to large amount of lightings in the teaching building. Therefore, the control system must be capable to extend the service life of lightings and reduce operation cost.

3) In terms of management, the teaching building should be equipped with automatic or manual switch function on all lightings, air-conditioners, fans and equipment power supply which should also be monitored in real time.

4) The teaching building requires to save energy consumption and management cost via control system.

The traditional lighting cannot or can hardly realize the above functions. In WIFONIC Smart Automation intelligent control system, with the control set on output equipment and function set on input equipment, it is quite easy to achieve those functions.

IV.   Design Parameters of Intelligent Control System Reformation

1) Without changing the original strong current line in the teaching building, add intelligent control equipment at the end of air switch. The load line is directly connected to intelligent control equipment.

2) Apply intelligent RM to control lighting circuit and equipment power supply switch. Use infrared code emitter to control the switch, temperature, speed and mode of air-conditioner.

3) The intelligent RM is standard 35mm guide rail installation in the distribution box. The infrared code emitter is 86-bottom case installation in the back of air-conditioner. The LC control panel is 86-bottom wall installation next to distribution box.

4) The communication line of control system equipment is UTP. Each device is serial connected with each other hand to hand.

5) Each layer of control equipment after serial connecting by bus exchanger would be linked into campus optical LAN.

6) The programming is set with control function so as to switch different scenes regularly to effectively save energy.

V.    Teaching Building Multi-media Classroom Control Realization

Each multi-media classroom (and lecture theatre) is equipped with single control, site manual control, central room control, regular control and air-conditioner control. The administrator could turn on or off all the lightings via the general switch on the computer monitoring interface in the central control room, also control a single circuit switch. For the convenient management on unite time of lights and air-conditioner switch by the administrator, the temperature, speed and working mode of air-conditioner in each class room could be set so as to save energy.

Each classroom is equipped with one multi-functional LC control panel for site manual control with preset management access password so as to prevent control by other persons. The classroom is always under control of the central room. When the campus network doesn’t work, the administrator could input password to manually control separately.

This system is an open system which other function areas could be intelligent reformed as well linking as a large intelligent management system, including department office building, dormitory building, library, laboratory building, lecture theatre, canteen and sports ground.

VI.   System Design Structure and Technical Character

1) This project adopts advanced and mature distributed intelligent monitoring management system. The network system connects the control equipment in each site to jointly achieve central management and local site control. Due to large area of this project, the entire system divides the control system into several subsystems which would be linked to the control center via high speed Ethernet.

2) The subsystem adopts bus structure network topology which is not only fit for the central control requirement and system scale, but also reduces fault affection that is easy to extend.

3) Various and flexible control methods: this project adopts central monitoring control, sub control, regional control, site control, regular control and infrared code control.

4) The system partition local control is completely separated without disturbing each other. One partition breakdown will not prevent other partitions or equipment from normal operation. Any equipment damage in the system will not affect normal work of other equipment in the same partition. The system partition local control is achieved by independent control panel operation. The central monitoring function fault will not affect the partition function and equipment operation, neither does the network communication control.

5) The control information in the system equipment is independent so that any system fault will not result in system paralysis. The information in the system would not loss while power supply stops; after power supply recovering, the system will automatically resume to the working status before power cut. The control circuit and load circuit are separate. Use 4-core low voltage cable to connect each unit to the bus. The working pressure is DC24V to ensure human security.

6) The system has regular set function of day, week and year, and astronomical clock as well, so that each controlled area could automatically manage.

7) The system is featured with distributed intelligent control and open, so as to achieve seamless connection with building automatic control system, central control and fire protection system, outdoor lighting system etc.