一种便携式的乔木相对坐标测量仪的设计

摘要

为了满足林业调查工作中对移动手持式测量仪体积小、重量轻、携带方便、价格低廉、容易操作的要求,设计了一种基于MSP430的便携式的乔木相对坐标测量仪.该设备由单片机、显示屏、GPS模块,存储器以及蓝牙模块等电子元器件组成,以MSP430单片机为核心控制器件,通过串口与GPS模块通信,接收GPS输出的定位信息,转化为乔木的相对坐标值,并将其值送入LCD实时显示,存储模块存储,蓝牙模块上传到外设.文章介绍了GPS定位的基本原理,绝对坐标转相对坐标的方法以及系统各部分的硬件及软件实现,并对样机进行了实测,结果表明:仪器精度上可以满足实际工作需要,具有很好的实用性.%In order to meet the requirement of forestry survey work on mobile handheld altimeter instrument which has the advantages of small size, light weight, convenient carrying, low price requirements, easy to operate, the design of a portable trees relative coordinate measuring instrument based on MSP430. The device is based on angle sensor, microcontroller, display, ultrasonic ranging module, GPS module, Bluetooth module and other electronic components. The MSP430 microcontroller as the core device to control the device, through the serial port module to communicate with the GPS, to receive location information, and the useful information into the LCD real-time display, storage module stores. This paper introduces the basic principle of GPS positioning,method of absolute coordinates into relative coordinates, the various parts of the system hardware and software and the prototype test. Results show that the instrument accuracy can meet the demand of practical work, which has the very good practicability.