| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系碩士班 === 89 === The first part of this thesis discusses the design of a central supervisory control system for a medical center, which uses the direct digital control scheme to monitor the status of the fire alarm system, the light control system, the power control and charge system, the heating ventilation and air-condition (HVAC) system, the cooling tower, the air conditioning box, the water supplying system, the wasted water system, the air flow system, the medical air system, and the door control system. With the use of the icon control software, this central monitoring system is able to display the status of all the above-mentioned systems on the computer screen. In addition, by utilizing the computer to acquire and analyze the data, computerization of the management becomes possible for the medical center. Undoubtedly, utilization of the central monitoring system will help save the energy and enhance the safety of the overall system.
In order to save the energy and minimize the requirement of the personnel (i.e., the man power), the top-level connection of this supervisory control system is realized with the Ethernet network that uses the TCP/IP as the communication protocol; the middle-level is the standard RS485 network; and the bottom-level is the extendable direct digital control (DDC) monitor/control local network. In this work, method of decoding is provided. Along with the point-to-point control, the problems of communication protocol and interface compatibility for the old equipments can be resolved. Therefore, the old equipments can be integrated with the newly built equipments.
In the second portion of this thesis, the optical properties and energy saving function of the solar control films are investigated. In this study, the way to accurately measure the transmission spectra for a large amount of solar control films in a reasonable time is described in detail. This specific research utilizes a wide-band light source to simulate the sunlight for the transmission measurements. An advanced spectroscopy system is employed to measure the transmission spectra of the solar control films for the spectral range from 200 nm to 1000 nm. An advanced two-dimensional 1340×100 charge coupled device (CCD) system whose detection performance in the ultraviolet spectral range has been markedly enhanced, instead of the traditional photo-multiplier tube (PMT) and lock-in amplifier system, is used as the photo detector to minimize the time required for the optical experiments. After the transmission spectrum of each solar control film is obtained, the average transmission coefficients in the visible spectral range, the infrared spectral range, and the ultraviolet spectral range can be calculated with a commercially available KaleidaGraph spread sheet program, which can then be utilized for the analysis of the feasibility of using the solar control films to save energy in a medical center.
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