上课或购物的时候,我们经常遇到需要测量距离或者物体长度的情况,身边通常不随身携带卷尺等工具。因为长度或者地形限制,卷尺在很多情况下不适用。而在这些情况下,测距的精度要求往往又不高。因此我总结了如下的问题并思考解决:在精度要求不高的情况下,使用手机上的各种传感器以最简便的方法来实现测距。 During class or shopping, we often encounter the need to measure the distance or the length of the object, usually do not carry around with tape measure and other tools. Tape measure does not work in many situations because of length or topographical constraints. In these cases, the accuracy of ranging is often not high. So I summarize the following questions and consider solutions: In the case of low accuracy, the use of a variety of mobile phone sensors in the most convenient way to achieve ranging.