Release date:2017/2/14 11:38:56 Click:2629
In the connection system of the automatic system of the building, the plug-in terminals and the direct-type terminals are mainly connected, and the plug-in terminals are an important branch of the circuit board terminals. The plugs and sockets are divided into two parts: the plugs and the socket are simple in structure , Easy to use, by the automation industry partners of all ages. There is a straight solder terminal can make a relatively large current and PCB board connection, 2 and 3 products can be any combination of splicing to meet the needs of different bits; for these large diameter wire, it must take into account the wire Tightened distance values; large gas gap design and response baffle to meet the user's high voltage access requirements.
The building automation system is a comprehensive system composed of central computer and various control subsystems. It adopts sensing technology, computer and modern communication technology to include heating, ventilation, elevator, air conditioning monitoring, water supply and drainage monitoring, Standby power monitoring, automatic fire alarm and fire linkage, security and other systems to implement a comprehensive automatic management. The information systems can be interconnected and linked to provide the most effective information services and an efficient, comfortable, convenient and secure environment for the owners, managers and customers of the building. BA system generally uses decentralized control, centralized monitoring and management, the key is the sensor technology and interface control technology and management information system.
Common control functions of the system are:
Building automation equipment is controlled by air conditioning control as the center. The automatic control of the air conditioning system is an automatic adjustment of the general thermodynamic process. The automatic adjustment of the air conditioning system has the following advantages:
A) the production of buildings can improve the accuracy of temperature and humidity control, improve product quality; for residential and commercial buildings is to improve people's comfort.
B) can increase or decrease the energy (heat or cold) to the system according to the change of the transferred quantity, thus can reduce the energy consumption and save the energy.
C) can reduce labor intensity.
I Automatic adjustment of the air conditioning unit
The control system adopts DDC control, the temperature detected by the temperature sensor installed in the return air duct is sent to the DDC controller and the set point temperature is compared with the proportional integral plus differential control, the corresponding voltage signal is output, the control is installed in the return pipe On the action of the electric control valve, so that the return air temperature to maintain the required range.
The humidity detected by the humidity sensor installed in the air supply duct is sent to the DDC controller and the humidity of the set point is compared with the humidity of the set point. The proportional voltage control is used to output the corresponding voltage signal to control the operation of the electric steam valve, The required range.
Installed in the return air pipe and the new air duct temperature and humidity sensor temperature / humidity sent to the DDC controller for return air and the new wind enthalpy calculation, according to the ratio of return air and new wind enthalpy, the corresponding output voltage signal , Control the return air damper and the proportion of new wind dam opening, the system energy saving.