I. Requirements Analysis

In the construction of transmission line projects in mountainous areas, roads often traverse between mountains and river valleys, frequently requiring extensive slope excavation. This excavation destroys the original vegetation cover, resulting in large areas of secondary bare ground and severe soil erosion, thereby damaging the ecological environment. To prevent slope instability along transmission lines and avoid significant economic losses to the nation, our company has developed an online monitoring device for transmission line slopes. This equipment monitors surface displacement, slope inclination, groundwater levels, soil displacement changes at various depths, and rainfall. It effectively addresses the shortcomings of traditional manual inspection methods.

II. Working Principle

The online monitoring device for transmission line slopes primarily employs a Beidou-based automated monitoring method to conduct real-time, automated monitoring of surface displacement on the monitored structure. Specifically, Beidou monitoring points and reference point receivers continuously receive Beidou signals, transmitting data in real time via communication networks to the control center. The Beidou data processing software on the control center server performs real-time differential calculations to determine the three-dimensional coordinates of each monitoring point. Data analysis software retrieves these real-time coordinates and compares them with initial coordinates to calculate displacement at each point. Simultaneously, the analysis software triggers alerts based on predefined warning thresholds.

III. Features and Functions

1. Basic configuration for slope monitoring: Master control unit, slope monitoring unit, communication unit, power supply unit, mounting brackets, and auxiliary materials;

2. Collect high-precision real-time 3D coordinates, base station observation data, monitoring point observation data, as well as ephemeris and precise ephemeris data. Transmit encrypted data via 4G/5G signals to the service platform for processing, then analyze the data using BeiDou ground-based augmentation network resources.

3. BeiDou Receiver Functionality: Includes all equipment encompassing data acquisition, centralized transmission, processing and calculation, display and recording, as well as safety protection facilities such as lightning protection and anti-theft measures. This enables the transmission of monitoring data to the monitoring center for display.

4. Unattended Monitoring System: Operates automatically with minimal supervision, achieving an annual operational reliability rate exceeding 99%. The system supports continuous 24/7 operation with over 100,000 hours of uninterrupted, fault-free performance.

5. Real-time display and analysis of deformation data, enabling intermittent health status assessments;

6. Central software automatic calculation: The shortest response time ranges from minutes to hours, with real-time network adjustment and automatic evaluation of monitoring results. All parameters are fully configurable by users according to specific monitoring requirements.

7. Diverse daily channel alerts: Alerts are delivered via web, app notifications, and SMS messages, ensuring you stay informed about power tower deformation status anytime, anywhere.

8. Real-time monitoring of spatial displacement at slope deformation and landslide points;

9. Provides high-quality dual-frequency BeiDou measurement data, delivering real-time millimeter-level positioning accuracy. Static accuracy specifications: Horizontal: <±2mm + 0.5ppm; Vertical: <±4mm + 0.5ppm. Real-time monitoring accuracy during wind-induced vibration on power transmission towers: Horizontal: <±10mm; Vertical: <±20mm.

10. Automatically generate reports with customizable reporting cycles (e.g., weekly, daily). Users can freely add or remove essential output information. Additionally, weekly or monthly trend curves for specific data points can be automatically generated as needed.

11. The system employs a modular design with standardized, integrated components to facilitate on-site installation and maintenance.

IV. Product Specifications

Serial Number	Category	Project Name	Technical Specifications
1	Overall Performance	Complete System Configuration	Main Control Unit, Slope Monitoring Unit, Communication Unit, Power Supply Unit, Mounting Bracket, and Auxiliary Materials
		Overall quality	Less than 30 kg (including solar panels and mounting brackets)
		Material	Stainless steel body + hot-dip galvanized bracket
2	Slope Monitoring Unit	Measurement time per channel	5s
		Clock Accuracy	+1 minute/month
		System Power Consumption	Standby: 0.5W; Measurement: ≤1.5W
		Data storage capacity	2MB (1,000 records)
		Power Supply System Configuration	Battery: 12V/7Ah maintenance-free battery
		Enclosure Dimensions	24 channels and above: 600x380x210mm; 12-channel and 8-channel models are recommended to use the compact chassis: 380x380x210mm
3	Communication Unit	Communication method	All-network 4G/5G/WiFi/Beidou communication module/wireless transmission
		Data Security	Communication with the main site can utilize a dedicated VPN channel, with optional encrypted transmission.
		Access Protocol	Compatible with monitoring platforms of provincial power companies such as China Southern Power Grid and State Grid
4	Power Supply Unit	Battery capacity	10Ah/12V
		Solar Panel Power Rating	30W/18V
		Power supply duration	The device can maintain normal operation for 15 days without external light.
5	Other parameters	Work Environment	Operating temperature: -40°C to +70°C; Relative humidity: 5% to 99% RH
		Overall service life	Over 8 years
		Protection Rating	IP66