? 為了提供乘客安全和舒適的需求，現今車用電子控制元件越來越多，其中包含了安全系統像防鎖死煞車系統和安全氣囊等。這些控制訊號都是經由車用通訊網路來將資料傳遞電腦，車用網路中最可靠的就是控制區域網路CAN。為了能有效降低車上的控制線數量，來減少汽車成本，本論文提出應用於直流電力線通訊之控制網路CANbus，本論文包含兩個主題:應用於DC-PLC收發機系統，以及有仲裁機制的DC-PLC。? 第一個主題建立能在直流電力上傳送和接收的模擬平台，由於FSK架構簡易且抗雜訊力佳，在直流電力線上易於偵測，我們以數位調變技術FSK形式來傳送資料，傳送端調變訊號到電力線上，接收端透過解調得到原本的數位訊號。第二個主題具有仲裁機制的DC-PLC，在發生訊息碰撞時，要能判斷出優先權高低避免發生錯誤，因此，我們設計固定兩種頻率的載波來代表0和1，而兩種頻率之間相差兩倍，軟體部分以simulink模擬，最後以FPGA實現驗證。?Electronic devices have been used more and more in vehicles to insure the safety and comfortness of the passengers. These include both safety systems, such as antilock brake system (ABS), and Supplementary Restraint System (SRS). In most cases, automobile manufacturers have chosen to transmit data from sensors to computers via dedicated communications networks, using standardized protocols like controller area network (CAN). To save the cost and reduce the amount of wires in the car, this thesis proposes on controller area network CANbus over power line communication. This thesis is composed of two parts: one is a system of DC-PLC transceiver, and the other is an arbitration mechanism of message collision.?In the first topic, a system of DC-PLC transceiver can communicate over DC power line. We developed a FSK modulation technique which has several advantages over other schemes. The transmitter sends data to power line and receivers demodulate the signals from power line. The second topic is a DC-PLC arbitration method which can resolve the message collision. We devised a carrier at two frequencies, f_1 and f_0, representing logic“1”and logic“0”, respectively. The data rate is as high as f_1, where f_0 is twice as f_1. We used simulink for software simulation, and hardware implemented by FPGA for emulation.
