A Circuit Module and CPLD Laser Ground Controller Based on RS485
The function of the controller is to adjust the rise and fall of the ground shovel constantly according to the signal of positional deviation trans-mitted from the laser receiver, and remove or fill in the soil of the farmland, thus reaching the aim of smoothing the farmland. So the controller is the core component of the laser-control-ground system. The speed of response and the control algorithm of the controller are in relation to the stability and work effi-ciency of this system. This research uses the RS485 module to transmit, en-hancing the interference immunity of the system, raising the stability when it works in severe environment, replacing SCM with CPLD to carry out the func-tion of logical control, cutting down the power consumption of the system. It in-terferes manually in the hydraulic control automatic mode via software, thus improving the stability and flexibility of the system. The function of adjusting the duty cycle of the controller output signal is added, making the controller able to work both in paddy field and dry land.
RS485 Circuit CPLD Laser Ground Controller
Xinlei Li Gang Liu Mingmmg Guo Yin Liu Fei Yang
Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University
国际会议
南昌
英文
327-340
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）