日本某公司最近发明了一种能够测定挖土深度的自动挖掘深度测定器。本装置是通过分别安装在挖掘机动臂和斗杆上的测角器,测出动臂和斗杆的角度,把该角度经过AD变换、演算处理在LCD上表示出深度的一种仪器。操作者只要操纵挖掘机的动臂和斗杆,就能在驾驶室内轻易地测出挖掘深度。如果操作者预先把挖掘深度输入深度控制器中,就能够放心地操作,当挖到设计深度,该 A Japanese company recently invented an automatic depth measuring device that can measure the depth of excavation. This device is a kind of instrument that measures the angle of the boom and the stick through a goniometer installed on the boom and the stick of the excavator, and the angle is represented on the LCD through the AD conversion and the calculation processing. As long as the operator manipulates the boom and stick of the excavator, the depth of excavation can be easily measured in the cab. If the operator inputs the depth of excavation into the depth controller in advance, he can safely operate when digging into the design depth.