犁耕阻力测试系统的研究

Study on a Testing System of Plow Draft Force

为便于在野外对犁耕阻力进行测试研究 ,研制了便携式犁耕阻力测量仪。对该测量系统的机械结构、硬件电路、测量仪和上位计算机的软件进行了系统介绍。使用该测试系统可以存储 6 4组测试数据 ,每组有 2 5 0个数据点 ,最大采样频率可以达到 4 0 Hz以上。通过计算机的 RS2 32串行通讯 ,可以直接将测试仪的数据读入计算机。该测试系统已得到实际的应用 。

In order to test the plow draft force, a portable measuring instrument had been developed. This paper introduced the mechanical structure of the test system, hardware and software of the instrument and the software of the upper computer. This test system can store 64 zones, one of which includes 250 data, its sampling frequency reaches 40 Hz and the data can be stored without any power. This instrument could completely meet the need of testing plow draft force. Through the RS232 serial communication, the data stored in the instrument can be transmitted to the upper computer easily. The test system has been used and the testing result is very good.