基于低速CAN汽车无线通讯系统设计.docx

 PAGE \* MERGEFORMAT 51 基于低速CAN的汽车无线通讯系统设计 摘 要 随着无线通讯系统的发展，简单，方便，智能是现在整个社会的主流方向。在日常生活中，汽车与我们息息相关，如何使汽车更加方便，更加节约布线，如何提高汽车的质量成为了许多人研究的方向。在汽车中使用无线通讯系统已经成为了主流。而在其中，蓝牙无线通讯系统是目前汽车中使用的最多的车载通讯系统，使用蓝牙无线通讯系统，对于节约汽车内布线，给驾驶人员带来安全与方便，起到了非常重要的作用。 本设计从硬件设计和软件设计方面说起，详细地阐述了基于低速CAN的通讯系统设计。在该系统中，选用了STC89C52作为主控制器，并配合其他软硬件相互合作以完成功能。在系统中使用手机蓝牙给蓝牙模块发送蓝牙指令，当蓝牙模块收到指令后，将该指令传输给单片机，单片机再对继电器进行控制。LCD显示屏用于显示设备的开关状态。在软件方面，采用C语言进行软件设计，给各个模块都配备了子程序使得整个系统一目了然，更加方便，也便于以后的检查与改进。最后，将其连接至低速CAN总线中。 关键词 单片机；蓝牙通讯；CAN总线  Design of Wireless Communication System Based on Low Speed CAN Abstract With the development of wireless communication systems, simple, convenient, intelligent is now the mainstream of the whole society. In daily life, the car is closely related to us, how to make the car more convenient, more economical wiring, how to improve the quality of the car has become the direction of many people. The use of wireless communication systems in cars has become mainstream. In which, the Bluetooth wireless communication system is the most used car communication system used in the car, the use of Bluetooth wireless communication system, to save the car wiring, to the driver to bring security and convenience, played a very important role. The design from the hardware design and software design aspects, elaborated on the low-speed CAN-based communication system design. In the system, the use of STC89C52 as the main controller, and with other hardware and software to cooperate with each other to complete the function. In the system using the phone Bluetooth module to send Bluetooth instructions, when the Bluetooth module receives the instruction, the instructions will be transmitted to the microcontroller, the microcontroller and then control the relay. The LCD display is used to display the switch status of the device. In the software, the use of C language software design, to the various modules are equipped with a subroutine makes the whole system at a glance, more convenient, b