1. Product Introduction

The GNSS displacement station is a product that uses differential RTK technology to achieve millimeter-level displacement monitoring. It can be widely used in engineering fields such as dam safety monitoring, bridge health inspection, and landslide early warning. This product has high precision, high stability, and real-time data transmission capabilities, and can accurately monitor the slight displacement changes of the target object in various complex environments. The GNSS displacement station is easy to operate and install, and can be remotely monitored and analyzed, providing a strong guarantee for engineering safety. In addition, its powerful data processing capability and compatibility allow the product to easily integrate into various monitoring systems, achieving data sharing and integration, and providing a comprehensive and efficient solution for engineering safety monitoring.

2. Product parameters

Sensor parameters:

1. Sensor power supply: DC10V-15V

2. Sensor power consumption: 0.25W

3. Static accuracy (differential mode): Horizontal ± (2.5 mm + 1 ppm), Vertical ± (5 mm + 1 ppm)

4.☆Antenna: Choke coil antenna, magnetic microwave absorption material, effectively reduce multipath effect

5.☆ Communication protocol: Modbus-RTU, support device end offline calculation of displacement, vertical and horizontal direction of displacement.

6. Support RTCM3差分 data

7. Size: diameter 360mm height 163mm

8. Working environment: -40°C~+85°C, 0%RH~95%RH (no dew)

Monitoring station parameters:

9. Station power supply: 30W solar panel, 20AH battery

10. Station power consumption: sensor + LORA: 0.6W sensor + LORA + data upload: 0.96W

11.☆Support for displacement alarm, displacement output, and displacement angle output in independent operation mode (without dependence on the cloud platform)

12. Support 4G, wireless bridge, wifi, Ethernet and other data communication transmission

13.☆Support TCP, HTTP, UDP direct transmission of the station to the customer platform

Collector parameters:

14.☆Support for on-site RS485 output of ASCII data format

15.☆Support for on-site addition of RS485Modbus-RTU environmental sensors

16. Built-in 4GFPC antenna support

Cloud platform parameters:

17.☆Support platform forward support TCP, HTTP

18.☆Cloud platform supports 3D data viewing, intuitively view the displacement direction and change amount of the observation point

Three, Product Installation

Installation requirements:

1. Neither the reference station nor the survey station should be surrounded by tall buildings, and if it is impossible to avoid them, they should be at least 20 meters away from them.

2. The distance (基線 distance) between the reference station and the measuring station is recommended to be less than 500 meters, and should not exceed 2KM. It is also important to install at the same altitude as much as possible. A large distance will lead to a decrease in accuracy.

3. The baseline and the measuring station should be as visible as possible, and if full visibility is not possible, it is important to avoid any tall walls or buildings that could block the line of sight.

4. Ensure that the satellite antenna is the highest point within 20 meters.

5. The mounting base should be firmly secured to avoid accuracy loss due to wind.

6. Specific installation issues can also be contacted with the company's after-sales video guidance.

Precautions: GNSS displacement monitoring is a high-precision displacement monitoring technology that uses positioning satellites such as Beidou and GPS. The monitoring accuracy of this technology strongly depends on the relative relationship between the reference station and the monitoring station and the electromagnetic environment. A too long baseline distance will seriously affect the monitoring accuracy or even make the data invalid (for example: for a baseline distance of more than 2KM or even 10KM, the possible displacement accuracy may be reduced to the 10 cm level due to the influence of the electromagnetic environment and terrain, which is invalid for displacement monitoring). Therefore, in order to ensure the accuracy of the measurement, the recommended baseline distance is within 500 meters.