Design of Central Air Conditioning Control System

2014 ◽  
Vol 602-605 ◽  
pp. 1472-1475
Author(s):  
Li Ming Wei ◽  
Chen Li
Keyword(s):  
Control System ◽  
Internal Control ◽  
Air Conditioning ◽  
Control Unit ◽  
Air Conditioner ◽  
Temperature And Humidity ◽  
Central Air Conditioning ◽  
External Equipment ◽  
Operation Results ◽  
Conditioning Control

In this paper, hardware and software of the central air-conditioning control system is researched by STC series of enhanced 8051 microcontroller. The STC11F 08XE is the main control of the hardware part. Temperature and humidity sensor regulating valve and all kinds of motor are used as external equipment to complete the temperature and humidity of building the internal control of central air conditioner. In terms of software, the program is described by protel99SE software. Microcontroller program is compiled by Microcontroller development tools keil u and STC-ISP. The temperature and humidity control and optimization of central air conditioning are completed by PID parameters. Infrared control unit is operated and liquid crystal is displayed to show the operation results.

Research on Central Air Conditioning Control System in Office Buildings Based on STC Microcontroller

2014 ◽  
Vol 960-961 ◽  
pp. 658-661
Author(s):  
Li Ming Wei ◽  
Chen Li
Keyword(s):  
Control System ◽  
Internal Control ◽  
Air Conditioning ◽  
Control Unit ◽  
Air Conditioner ◽  
Temperature And Humidity ◽  
Central Air Conditioning ◽  
External Equipment ◽  
Operation Results ◽  
Conditioning Control

In this paper, hardware and software of the central air-conditioning control system is researched by STC series of enhanced 8051 microcontroller. The STC11F 08XE is the main control of the hardware part. Temperature and humidity sensor regulating valve and all kinds of motor are used as external equipment to complete the temperature and humidity of building the internal control of central air conditioner. In terms of software, the program is described by protel99SE software. Microcontroller program is compiled by Microcontroller development tools keil u and STC-ISP. The temperature and humidity control and optimization of central air conditioning are completed by PID parameters. Infrared control unit is operated and liquid crystal is displayed to show the operation results.

Design of Bus Air-Conditioning Control System Based on PIC18F458

2013 ◽  
Vol 774-776 ◽  
pp. 407-410
Author(s):  
Qiu Hua Miao ◽  
Zhi Guang Guan
Keyword(s):  
Control System ◽  
Air Quality ◽  
Air Conditioning ◽  
Control Unit ◽  
Analog Signal ◽  
Conditioning Control

In this paper, a kind of efficient air-conditioning control system is proposed. PIC18F458 is adopted as main control unit of the system , which collects all kinds of analog singles such as temperature, humidity and so on, then convert them to digital by the A/D itself. After disposing and calculating each analog signal the system drives corresponding actuator to work to adjust temperature, humidity and cleanness of the air in bus, making passengers satisfied with air quality in bus.

Simulating Design of Central Air Conditioning Control System in Office Buildings Based on PLC

2014 ◽  
Vol 525 ◽  
pp. 621-624
Author(s):  
Xue Jing Sun
Keyword(s):  
Control System ◽  
Software Design ◽  
Air Conditioning ◽  
Complete Control ◽  
Loop Control ◽  
Pid Algorithm ◽  
Central Air Conditioning ◽  
Programming Software ◽  
Plc Programming ◽  
Conditioning Control

In this paper, based on the Siemens S7-200 programmable controller in the central air conditioning control system, hardware and software of the central air-conditioning control system is designed. In hardware design PLC controller is used as controlling core to control temperature and humidity of the entire process. In the software design, control programming and multi-loop control of temperature, humidity PID algorithm are completed by using PLC programming software STEP7 because of its characteristics that it is easy to read and easy to achieve complete control. Lastly, Related parameter is set and the information is displayed by touching screen.

scholarly journals VEHICLE AIR CONDITIONER (VAC) CONTROL SYSTEM BASED ON PASSENGER COMFORT: A PROOF OF CONCEPT

2022 ◽  
Vol 23 (1) ◽  
pp. 370-383
Author(s):  
Suroto Munahar ◽  
Bagiyo Condro Purnomo ◽  
Muhammad Izzudin ◽  
Muji Setiyo ◽  
Madihah Mohd Saudi
Keyword(s):  
Control System ◽  
Air Conditioning ◽  
Air Conditioner ◽  
Proof Of Concept ◽  
Passenger Cars ◽  
Air Conditioning System ◽  
Precise Control ◽  
Cabin Temperature ◽  
Air Circulation ◽  
Conditioning Control

The air conditioning system (AC) in passenger cars requires precise control to provide a comfortable and healthy driving. In an AC system with limited manual control, the driver has to repeatedly change the setting to improve comfort. This problem may be overcome by implementing an automatic control system to maintain cabin temperature and humidity to meet passenger's thermal comfort. Therefore, this paper presents the development of a laboratory-scale prototype air conditioning control system to regulate temperature, humidity and air circulation in the cabin. The experimental results show that the control system is able to control air temperature in the range of 21 °C to 23 °C and cabin air humidity between 40% to 60% in various simulated environmental conditions which indicate acceptance for comfort and health standards in the vehicle. In conclusion, this method can be applied to older vehicles with reasonable modifications. ABSTRAK: Sistem penyejuk udara (AC) pada kenderaan penumpang memerlukan ketepatan kawalan bagi menyediakan keselesaan dan kesejahteraan pemanduan. Melalui sistem AC dengan kawalan manual terhad, pemandu perlu berulang kali mengubah penyesuaian latar bagi meningkatkan keselesaan. Masalah ini dapat diatasi dengan menerapkan sistem kawalan automatik bagi menjaga suhu dan kelembapan kabin agar memenuhi keselesaan suhu penumpang. Oleh itu, kajian ini merupakan pembangunan prototaip sistem kawalan AC skala laboratari bagi mengawal suhu, kelembapan dan peredaran udara dalam kabin. Hasil eksperimen menunjukkan sistem kawalan ini mampu mengendali suhu udara pada kitaran 21 °C  hingga 23 °C dan kelembaban udara kabin antara 40% hingga 60% pada pelbagai keadaan persekitaran simulasi yang menunjukkan penerimaan standard keselesaan dan kesejahteraan kenderaan. Sebagai kesimpulan, cara ini dapat diaplikasi pada kenderaan lama dengan modifikasi bersesuaian.

Research and Application on Central Air Conditioning Control System

2014 ◽  
Vol 602-605 ◽  
pp. 1468-1471
Author(s):  
Xue Jing Sun
Keyword(s):  
Control System ◽  
Pid Control ◽  
Air Conditioning ◽  
Control Temperature ◽  
Pid Algorithm ◽  
Input And Output ◽  
Central Air Conditioning ◽  
Set Up ◽  
Control Principle ◽  
Conditioning Control

In this paper, microcontroller is applied in the central air conditioning control system. Firstly, microcontroller controller is used as controlling core to control temperature and humidity of central air conditioning control system. Secondly, PID algorithm parameters are set up for improving traditional PID control principle. Lastly, input and output values can be set and displayed by LCD screen.

Research on Central Air Conditioning System of Intelligent Buildings

2014 ◽  
Vol 960-961 ◽  
pp. 639-642
Author(s):  
Xue Jing Sun
Keyword(s):  
Control System ◽  
Pid Control ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Pid Algorithm ◽  
Intelligent Buildings ◽  
Central Air Conditioning ◽  
Set Up ◽  
Control Principle ◽  
Conditioning Control

In this paper, microcontroller is applied in the central air conditioning control system. Firstly, microcontroller controller is used as controlling core to control temperature and humidity of central air conditioning control system. Secondly, PID algorithm parameters are set up for improving traditional PID control principle. Lastly, input and output values can be set and displayed by LCD screen.

A Remote Intelligent Control System for Split Air Conditioning System

2013 ◽  
Vol 325-326 ◽  
pp. 1162-1165
Author(s):  
Jie Ming Ding ◽  
Zhen Zhong Li ◽  
Wei Bo Li ◽  
Pin He ◽  
Yang He
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
Air Conditioning ◽  
High Efficiency ◽  
Control Unit ◽  
Air Conditioner ◽  
Air Conditioning System ◽  
Air Conditioners ◽  
Intelligent Control System ◽  
Intelligent Terminal

Combined wireless sensor network technology (WSN) and infrared control technology this paper designs an intelligent control system for split air conditioner (ACSS). The system adopts the SimpliciTI protocol and a highly integrated chipset, CC1110, as wireless sensing node, which it has high efficiency and lower power. The intelligent remote control unit of the system is capable of signal conversion, wireless communication as well as infrared control ability. In order to suit different air conditioners, the system establishes a control code library by learning a variety of air-conditioning infrared control signals. The control parameters optimized by the system server are transmitted to the intelligent terminal and then fires the infrared control signal to the air conditioner. Therefore, the system achieves the purpose of the remote intelligent controlling.

scholarly journals Design and Implementation of a Low-Energy-Consumption Air-Conditioning Control System for Smart Vehicle

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Chien-Lun Weng ◽  
Lih-Jen Kau
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Heat Load ◽  
Air Conditioning ◽  
Minimum Energy ◽  
Low Energy ◽  
Air Conditioner ◽  
Low Energy Consumption ◽  
Smart Vehicle ◽  
Conditioning Control

About 7% of people’s daily time is spent in taking vehicles between office and home. Besides, with the improvement of the living standard in today’s society, people’s requirements for a comfortable environment inside the car are constantly increasing and this must rely on an effective vehicle air conditioner to maintain the comfort of the cabin environment. In general, a vehicle air conditioner uses the air-mixing mode to regulate the temperature control system. In this mode of operation, the compressor needs to work continuously, which is extremely energy consuming. The vehicle’s air conditioner is greatly affected by the inner and outer heat load, which are generated therein. Furthermore, the heat load is instantly changeable. Therefore, only when the controller can adapt to the feature of heat load, then we can find the optimal control method, thus enabling the vehicle’s air conditioner to interact with the actual heat load to supply the balanced cooling capacity and, as a result, create the most comfortable environment inside the cabin with minimum energy consumption. For this purpose, we bring up in this paper a low-energy-consumption smart vehicle air-conditioning control system to detect total heat load, which can change the vehicle’s air-conditioning capacity mode to maintain the average temperature at 25.2°C∼26.2°C and the average humidity at 46.6%∼54.4% in the cabin. When the inner heat load is stable, the rest times of the compressor can reach 16∼23 times per hour, which attains a rate of fuel saving around 21%∼28%. With the proposed architecture, the purpose of the low-energy-consumption vehicle air-conditioning system can be achieved, which, at the same time, creates a comfortable environment inside the cabin.

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