Abstract: | To solve the drawbacks of traditional analog meter for the single function and application limitation, the design uses the I.MX6 processor to design the digital meter, extends RS232, RS485/RS422, CAN, Ethernet, USB and other field bus communication interface, integrates analog video capture, digital in-output and other functions. CoDeSys runtime, the configuration platform, is adapted to Linux as the application programming platform. The system has implemented bus communication, graphics display, data storage, security monitoring and other functions. It has advantages for excellent resolution, high reliability, flexible application development, good expansibility, and etc. The digital instruments can be widely used in construction machinery, mining, ships, industrial and other harsh working environments. |