基于PXI的悬挂农机具受力田间在线遥测系统

Remote Measurement Force System on the Spot for Mounted Tillage Implements Based on PXI

农机具的田间测试能反映机具在田间工作时的真实情况。由于田间运行环境恶劣,对测试设备的要求较高。采用PXI总线结构和高性能信号调理电路进行多种信号数据采集,能够最大限度地解决抗振、抗干扰和防灰尘等问题。针对悬挂式农机机具进行受力田间在线测试时,使用拉压力传感器进行力的测量,双轴倾角传感器测量各相关夹角;采用PXI嵌入式处理器将采集的数据转换成串行数据经无线数据传输至上位机。数据处理采用LABVIEW进行系统设计,可以对悬挂式机具田间的工作情况进行实时检测。

It is an objective reality to measure the force of tillage implement in the field. For the working condition being too bad on the spot the test instruments demand more reliability. Wireless remote measurement force system for mounted tillage implements has been developed. High - powered signal modulating circuit based on PXI. bus was designed for multi -, signals collecting. It can resolve the problems of anti - vibration, anti - interference and dustproof. The forces were tested by the pulling and pushing sensors and the angles were tested by the double axle obliquity sensors. The embedded processor based on PXI transformed the collecting data into the serial ones and transmitted to The host computer through wireless. LabVIEW was used for data processing. It can measure the mounted implements on the spot