การออกแบบแอพพลิเคชั่นสำหรับเครื่องรังวัด 3 มิติ ในการมีส่วนร่วมจัดทำ แผนที่เสี่ยงดินถล่มของเกษตรกร ต.แม่พูล อ.ลับแล จ.อุตรดิตถ์

Abstract

This article is intended for the use of GIS applications.to support farmers' participation in the management of landslide warning systems on the durian area of Tambon Mae Phun. By using data from a simple 3D surveying tool with bringing the information that farmer has surveyed the area. Enter into the system for the application to process data which consists of 1) The distance from the camera to the surveyor 2) Azimuth and 3) Vertical angle. By calculating the level of landslide risk from the land slope value with the location coordinates from the global positioning system (GIS). The landslide risk is shown as the color difference put on the topographic map. The results show that there are mainly two error values, which are 1) Position error As a result of the positioning system having a value of no more than 5 meters or according to machine specifications 2) Angular error values as a result of 2 parts of the surveying equipment which are 2.1) Measuring by the laser range finder which can read the data by 0.1 meter and 2.2) Vertical angle measurement can be read by the compass resolution of 0.5 degrees. Therefore, in designing an application to be effective, there is a need to consider the maximum error rate. Which the results show that when using the value with the highest probability of reading to calculate the slope found that there is a wrong slope of 20 percent at an altitude below 5 meters, 30 degree slope angle, 100 meters distant. Therefore has been defined as a use restriction