Design Of Mobile-Dynamotor Monitor Based On CAN Bus

With the development of integrated circuit and embedded technology,embedded system is more and more applicable in on-board equipment.Mobile-dynamotor is the power source for all kinds of on-board equipments, thequality and the reliability of its power supply directly determine the operationaleffectiveness. Therefore, achieving modernization and informatization ofmobile-dynamotor, ensuring quality and reliability of power supply, has greatsignificance for the on-board equipment modernization.The paper focused on a certain type of vehicles and started the design ofmobile-dynamotor vehicle monitor based on CAN bus. First, the paper introducesbriefly the development of the power monitoring equipment and CAN bus. Thenstudied the related theory of CAN bus. According to a certain type ofmobile-dynamotor structure, the paper came up with the basic function andperformance indicators of the monitor, described the measuring principle of themonitoring parameters in detail, presented the topological structure based on CANbus. Secondly, the hardware design was conducted by using high-performanceARM chip LPC2368, special metering chip ADE7758and a variety of sensors. Thesoftware design of each modules was implemented based on μC/OS II system. Inthe process of designing, we made reliability design and reliability test. Thereliability of embedded system had been improved by using new process andtechnology. Finally, the paper conducted bench test and application test, and theresult showed the monitor completely meet the requirements of mobile-dynamotor.The monitor integrated the measurement, protection, control andcommunication together, and replaced the analog and digital ammeter, voltmeter andtachometer of current mobile-dynamotor as well as the control and protectiondevices. The monitor completely changed the traditional structure and simplified thetopological structure. The monitor is able to easily achieve the distributed control ofvehicle monitoring parameters and the function extension, which makes the systemmore reasonable and humanized. In addition, the system amplified the using spaceof vehicle and standardized the manipulation of the vehicle, and it successfullyreduced the marginal cost such as maintenance and training etc. With the improvedlevel of automation, integration, informatization, the design has great social andeconomic benefits.