Earthquake aftershock monitoring is a systematic engineering that captures, measures parameters, analyzes trends, and provides risk warnings for a series of small-scale aftershocks in real time through aftershock monitoring devices after the main shock occurs. It evaluates the secondary threats of aftershocks to the safety of buildings, infrastructure, and personnel in the earthquake area

1. The whole equipment is mainly composed of control terminal (host), aftershock monitor, and sound and light alarm.

2. Control terminal (host): Use a full-color LCD display, screen size ≥ 8 inches. ▲

3. Three control methods, key and touch, with photo, video and storage functions, can display the monitored object, video images can be enlarged and reduced. The display can show the battery of each monitor, the real-time value of the angle vibration, the connection status of each monitoring instrument and the control terminal (host), alarm status.

4. Support for Beidou positioning function, can display location information through the display screen, with alarm threshold adjustment, alarm volume adjustment, charging, each monitor alarm signal and wireless transmission function.

5. The control terminal (host) can achieve linkage alarm monitoring with each monitor, can playback the video and photos stored in the host according to time, switch photos by sliding the touch screen left and right when viewing photos, and can zoom in to view, and can fast forward or rewind when playing back videos.

6. The color display can show digital status such as displacement, vibration, etc. in real time, battery,余震 monitor (傾角 monitor) number, alarm value, operation, connection status, etc. The diagonal size of the display ≥ 8.5cm, display colors ≥ 5, resolution ≥ 320*480. ▲

7. Intelligent management cloud platform: The platform interface can view the access status of the device, real-time detection information, device working status, power information, etc. The platform is equipped with a user manual, which can be viewed by operators through the platform in real time; it has a one-map display function, which can display the location of the device, online status, and affiliated permissions; it can group the devices that have been connected, realize the display of multiple types of multiple devices on the same screen, and can view the historical data of the device.▲

8. When the monitored value deviates from the set value, it can automatically alarm, emit sound and light alarm signals, and the alarm signal can be manually canceled by pressing the key. The control terminal (main unit) can achieve interlocking alarm monitoring with each aftershock monitor (傾角 monitor).

9. Number of alarm LED flashlights: ≥8 pieces. The sound intensity of the alarm ≥110 dB, the alarm sound can be turned on and off.

10. The alarm threshold can be adjusted as required, supporting both fixed alarm value and arbitrarily set alarm value. The fixed alarm threshold of 7 levels can be set by shortcut key, 0.5°, 1.0°, 2.6°, 5.0°, 8.0°, 10.0°, 20.0°, and the step setting of 0.1° is also available. The adjustable range is: 0.1-60°, and any scale value can be continuously adjusted.

11. Wireless transmission is used between devices, and the communication distance should be ≥ 600 meters (open and interference-free area) ▲

12 Can be monitored through three-dimensional (360°), X, Y, Z three-axis display, resolution 0.01°.

13. The accuracy of the aftershock sensor is ≤0.1°.

14.余震 monitor (傾角 monitor) maximum monitoring distance ≥100m (open area without interference).

15. With one-key search function, it can automatically alarm and reverse locate the position of the monitor.▲

16. The whole equipment works continuously for ≥12h.

17. Working temperature: -25℃ to 60℃, storage temperature: -40℃ to 70℃.

18. Protection level: IP67. ▲

19. Provide a third-party inspection report recognized by the state at the provincial level (including) or above at the time of bidding (the inspection report has the CMA or CNAS mark), and the inspection report reflects the technical indicators of the above items with the "▲" mark.