Design Of Control Software For Lithium Battery Simulator

Lithium batteries are widely used in mobile portable devices,electric vehicles and other fields.Before the equipment containing the lithium battery enters the market,it needs to be tested for reliability.Lithium battery simulator can simulate lithium battery charge and discharge characteristics and replace the real battery for a variety of tests.The application of lithium battery simulator improves test efficiency,saves resource costs and reduces environmental pollution.As the development of computer network technology,test equipment and computer network technology together become a trend.The new generation of test bus standard LXI is adapted to this trend.At present,research and application of the lithium battery simulator are very extensive,but there are few mature domestic battery simulation products for mobile equipment.The lithium battery simulator is as the research object in this thesis.This thesis completed A / D and D / A module circuit design and driver programming and testing,studied of C class LXI interface based on lithium battery simulator and standard program control instructions SCPI interpreter in-depth.In the second chapter,the functional requirements of the lithium battery simulator are analyzed,and the overall hardware framework is designed.The core of the control software hardware circuit is the ARM9 processor,and build software development platform based on embedded Linux.In the third chapter,the circuit design and driver programming of A / D and D / A modules of the lithium battery simulator are completed to achieve the lithium battery simulator voltage and current settings and reading.This thesis focuses on the LXI interface function of lithium battery simulator in the fourth chapter.According to the LXI standard,the key technology of Class C LXI instrument is realized.In the lithium battery simulator side achieved the server-side program of network device discovery mechanism based on the VXI-11 protocol so that the user can successfully discover and identify the target lithium battery simulator located on the LAN by running the network instrument discovery software on the PC side.Through transplanting Boa embedded Web server into the processor ARM Linux operating system of lithium battery simulator and static Web production and CGI program written successfully realized the lithium battery simulator Web control function so that users can access and control the lithium battery simulator by inputting the lithium battery simulator IP address in the PC-side browser.The fifth chapter studied the SCPI command interpreter for the lithium battery simulator.Lithium battery simulator instruction system was designed according to the SCPI specification for the lithium battery simulator studied in this thesis.And then focus on research and implementation of the SCPI interpreter program,including the SCPI instruction storage and instruction analysis.The lithium battery simulator can successfully parse and perform the corresponding action on the SCPI instruction sent by the user via the program control software or Web browser.The sixth chapter of the article through the realization of the key technologies were tested and verified the expected experimental results,proved that the realization of the control software in line with the requirements of lithium battery simulator.