1. Project Overview
In our country where earthquakes are frequent, how to expand seismic monitoring points, collect and process the data of seismic stations distributed in the field, and strengthen the real-time monitoring of seismic information is an urgent issue for the National Seismological Administration.
At present, the seismic data collector widely used by the seismic department is one of the main equipment for digital seismic observation. It converts the analog signal output by the seismometer into a digital signal output for digital transmission and computer processing. In order to ensure the accuracy of the data uploaded by the seismic data collector, continuous sampling is often used, so the amount of data is relatively large. In order to ensure that the seismic monitoring data is not lost, the communication network used must have the characteristics of high bandwidth, good stability and not subject to the constraints of the field environment. The 4G/5G wireless data network is becoming a new technical approach for seismic station networking due to its fast speed, flexible networking, easy expansion, free from distance and environmental restrictions, and low usage costs.
2. Industry requirements
In order to improve the informatization level of the seismic background field detection system, improve the timeliness and accuracy of data analysis, avoid major hazards caused by earthquakes, effectively find and rescue in time, and upload the data of each collection point to the center in real time Analysis and prediction on the monitoring side is a very important part of the earthquake monitoring industry.
Problems facing earthquake monitoring:
▶Monitoring points are generally in the field, and the points are scattered, making it difficult to lay network cables to obtain electricity.
▶Earthquake monitoring points are distributed in a very wide range, mostly in mountainous areas, and the cost of pulling power cables is high.
▶ The installation environment in the wild mountain area is complex, the implementation is difficult, and the equipment maintenance cost is high.
▶Safe and stable: 24-hour power supply and network to ensure safe and stable operation of equipment
▶Cost saving: no need to pull power grid wiring, saving cost
▶Intelligent and efficient: unattended, real-time monitoring, intelligent analysis, fast and efficient
▶On-site electricity: no need to lay network cables, front-end monitoring equipment can be quickly and conveniently set up where monitoring is needed
3. Solution
Chenmai Wisdom, based on the monitoring characteristics of the earthquake industry, adopts industrial routers to construct a complete set of earthquake monitoring system solutions to realize the automation, informatization, and networking of the seismic background field detection system, and strengthen seismic scientific research, monitoring and forecasting. Infrastructure for earthquake disaster prevention and emergency rescue.
The whole system consists of three parts: the front-end collection and wireless transmission part, the central data storage and processing display part, and the early warning release part.
Acquisition and transmission: mainly including seismic data collectors, equipment protective boxes, etc. The seismic data collector collects relevant seismic data and transmits the data to the central server through 4G/5G wireless networks. Due to the security and reliability of seismic data, encrypted transmission is required, so we collect A wireless router with VPN function is used as a wireless data transmission medium.
Data storage and processing display: mainly includes data server, application server, large monitor screen and other parts. Mainly responsible for storing, analyzing, and displaying the data collected and returned by the front-end.
Early warning release part: After the earthquake occurs and the prediction is successful, the predicted results need to be released in time to make an early warning to minimize the loss of the people.
4. System significance
1. Real-time monitoring point deformation, displacement, inclination and other data, to understand the situation of the monitoring point;
2. Store information so that managers can compare and analyze current data and previous data;
3. Give real-time reminders to the monitoring point, and at the same time, arrange for police officers to the monitoring point;
4. It can realize remote login, remote access, remote management, remote control and remote maintenance of the safety monitoring system.
5. System function
Ultra-low energy consumption: The equipment adopts ultra-low power consumption design, which is suitable for unattended solar power applications in the field;
Real-time transmission: 24-hour uninterrupted transmission of data, real-time monitoring point data;
Long-term storage: long-term storage of set parameters and historical data, providing 16MB of data storage space, can store more than 10 years of collected data;
Continuous capture: camera can be connected to support image capture function to lock and track overloaded vehicles;
Abnormal alarm: data transmission can be carried out via 4G/5G, and an alarm can be issued for abnormal data in time.