摘要
为了方便及时检测土壤各因子的变化,为林地选择合适的树种提供依据,本文提供一种便携式森林土壤探测仪。本探测仪应用机械电子控制技术、传感器技术以及通信技术,将SHT11温湿度传感器、pH传感器及应变传感器与AT89S51单片机以及24位精度的A/DS1232转换器相结合,解决了传统仪器功能单一、操作复杂的问题,达到"一针多用"的效果。最终试验结果表明,该便携式探测仪可在一定范围内同时测量出土壤的温湿度、pH值(酸碱度)以及贯入阻力(板结度),且测量范围为地面至地下40 cm,响应时间≤1 min,测量精度为±0.5%,具有简单轻便、操作容易、测量快的特点,完全符合设计要求。该探测仪在森林火灾过后的土壤检测、林木生长过程的实时监测等方面有着很好地应用前景。
In order to detect the change of soil factors conveniently and timely,and to provide the basis for choosing suitable tree species in forest,a portable forest soil detector is provided in this paper.By using mechanical and electronic control technology,sensor technology and communication technology,and combining SHT11temperature and humidity sensor,pH sensor and strain sensor with AT8951microcontroller and24-bit precision A/DS1232converter,the detector solves the problems of single function and complicated operation of the traditional instrument and achieves the effect of u one needle with multiple purposes.Finally,the test results show that the portable detector can measure the temperature and humidity,pH value and penetration resistance(compaction degree)of the soil in a certain range,and the measuring range is from ground to underground40cm,the response time is less than1minute,the measurement accuracy is±0.5%.The detector has the characteristics of simple,light,easy to operation and fast,which can meets the design requirements.The detector has a good prospect in soil detection after forest fire and real-time monitoring of forest growth process.
作者
林梦磊
胡进娣
李爽
薛伟
Lin Menglei;Hu Jindi;Lishuang;Xue wei(College of engineering and technology, Northeast Forestry University, Harbin 150040)
出处
《森林工程》
2017年第5期56-61,共6页
Forest Engineering
基金
东北林业大学国家级大学生创新项目(201610225086)
