基于虚拟仪器的后悬挂农具田间测试系统

为了解决后悬挂农具田间测试效率和精度低，测试成本高等问题，根据田间测试需求，设计了一套基于虚拟仪器原理的田间测试系统。该系统采用上、下位机模式，多种传感器融合及无线传输等技术，实现后悬挂农具多类型参数的实时同步测试。在田间拖拉机牵引试验平台和试验平台三点悬挂2BMSF-12/6型免耕施肥播种机2种工况下进行拖拉机燃油消耗、尾气排放、驱动轮滑转率、农具地轮滑移率、六分力、PTO扭矩和转速等田间试验。试验结果表明，后悬挂农具田间测试系统通讯正常，数据量大且准确可信，满足一般后悬挂农具田间试验要求，可为农具设计优化、适用性评价等技术提供理论支持。

Field Test System of Rear Suspension Tools Based on Virtual Instrument

In order to solve the problems of low efficiency, low accuracy and high cost in existing rear suspension testing system, a field test system of suspension tools based on virtual instrument was designed. The master and server computer model, sensor fusion and wireless transmission technology were adopted in the proposed system, which could realize suspension tools multi-parameters real-time synchronous measurement. The tractor fuel consumption, emissions, drive wheel slippage rate and agricultural tool six component forces, PTO torque and rotational speeds, etc. were tested in the field under the conditions of tractor pull test platform or suspending 2BMSF-12/6 no-till dill. The results showed that the communication of field test system was normal, and the data was reliable and accurate. It satisfied the general rear suspension tools field test requirements and could provide theoretical support for design optimization and applicability evaluation.