Views:3449 Date:2018-11-11

The importance of Shenzhen GPS antenna manufacturers for high-slope construction in large-scale projects and the weakness of conventional GPS monitoring methods that can not be overcome in high-slope monitoring, from the perspective of system input cost, automation and reliability, proposed GPS-based Remote automatic high slope safety monitoring system with one-machine multi-antenna technology, GPRS wireless communication and control technology. The system realizes the automatic collection and wireless transmission of high-risk on-site monitoring data to the remote monitoring center, and automatically solves and analyzes the data in the remote monitoring center. It has been successfully implemented in the deformation monitoring of the No. 2 mountain beam of the Xiaowan Hydropower Station in Yunnan. Applications.

For the deformation monitoring of natural or artificial slopes, there are usually two methods of conventional monitoring and GPS monitoring. The conventional monitoring method uses instruments such as theodolite, range finder or total station instrument to obtain the monitoring point observation data by means of forward intersection, corner net and polar coordinate difference, and obtain the displacement of the monitoring point through the corresponding data processing method. The advantage of the conventional monitoring method is that the observation data is intuitive and reliable, the precision obtained by short distance is high, and the investment is small; but the disadvantage is that it is affected by the general condition, meteorological conditions and construction interference, and the accuracy is poor and difficult to improve in long distance monitoring. . Because the high dam is built in the mountainous gorge area, the scope is large, the climate is complex and changeable, and the characteristics of large humidity and fog are more frequent in the rainy season, which makes the conventional monitoring method not timely in the important period of such monitoring during the rainy season.

    As a high-tech, GPS has obtained some applications in the construction of hydropower projects in China, but its application in dam and slope safety monitoring is a very weak link. The barriers that affect the widespread use of GPS technology in safety monitoring systems are costly and less automated. Since the receivers need to be installed at both the monitoring point and the base station, when monitoring is carried out in a large area such as a dam or a slope, there are many measuring points to be laid, and the input cost is large. If the batch observation method is used, it takes a long time. The cycle, therefore, greatly restricts the development of GPS in this field.

In response to the problems of GPS in security monitoring, the FM signal coverage solution provider proposed the idea of GPS multi-antenna, and developed a GPS multi-antenna controller to enable one GPS receiver to connect multiple channels without interference. antenna. In this system, only the GPS antenna is installed at each monitoring point, and no receiver is required. This greatly reduces the cost of the safety monitoring system. The development of this technology has created extremely good conditions for the safety monitoring of dams and high slopes using GPS, and also makes GPS technology have a broader application prospect in water conservancy and hydropower projects. In addition, the GPS-based multi-antenna controller also creates favorable conditions for high-slope automated continuous telemetry.