Localization of Multifunction Remote Control Microphone in Railway Public Address Systems

• Main Authors: CHEN,CHIA-NAN, 陳嘉男
• Other Authors: CHANG CHIAN,JIA-REN
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/ppp2u9

碩士 === 國立高雄第一科技大學 === 電子工程系碩士在職專班 === 106 === This paper proposes a set of domestic multifunctional remote control microphones can be compatible with existing system equipment. This study analyzes hardware circuits and information of the signal of original equipment by writing programs and using logic analysis, presenting an implementation of all functions of the original equipment system. In this thesis, the multifunctional remote control microphone software is developed to build platforms by using single chips. C language is used for the software development and design, and in the verification process, logic analyzer is used to analyze and verify. The software can be divided into six blocks of information, including: reception of the start code, reception of the function code, reception of the epilog code, recognition of the function code and corresponding actions, recognition of the handshake start code and the end code. The specification and layout of the design of hardware case adopts the method of computer simulation, and the hardware case is specifically simulated in three-dimension patterns. Whether the design conforms to the planning concept will be confirmed by this three-dimensional pattern. Based on the results of fault analysis, the circuit design adopts reinforced circuit components and is applied to manufacture a printed circuit board, laying out the designed electronic components so as to form an internal circuit board of the newly multifunctional remote control microphones developed by this research. The overall system testing structure can be divided into two parts: software and hardware. The structure of the software is divided into three main parts, including the system engineering, the sensor and control unit and design and the visual management system. The hardware verification test confirms the compliance of functions by comparing with old multifunctional remote microphones. This research of the design of the domestic multifunctional remote microphone is based on alternative concepts; the design phase has solved problems concerning the reinforcement of structure, selection of components, design of loops, disconnection, faulty buttons, abnormal hardware abnormal power supply, etc. Therefore, failures occurred in the past can be effectively prevented. This study helps to reduce the maintenance cost of the multifunctional remote microphone effectively and also improves the stability of the equipment. Moreover, the multifunctional remote microphone has also become the first domestic railway broadcasting equipment of independent research and development.