1. A Presentation
on
Land slide warning system

2. CONTENTS
 Introduction
 Description
 Hardware design
 Design of end device and router
 Sensors hardware connection
Angle sensor
Liquid level sensor
 Design of the coordinator
 Software design
 Flowchart of terminal node
 Conclusion

3. INTRODUCTION
 The combined and separated research advancement in the
fields of sensing, communication and computing has driven the
research efforts in wireless sensor networks.
 A wireless sensor network is composed of large number of
sensor nodes that communicate with each other through multi
hop wireless links.
 Land slide monitoring mainly relies on two sensors
1. Liquid level sensor
2. Angle sensors
 Landslide warning system is based on wireless sensor networks
using zigbee protocol.

4. Sensors deployment

5. DESCRIPTION
 The landslide warning system is based on Zigbee wireless communication
Protocol, adopts the CC2430 chip for wireless data transmission.
System structure diagram

6. HARDWARE DESIGN
 The hardware uses CC2430 as the processing core component.
It is a system on chip specifically suited for IEEE 802.15.4 and
zigbee applications.
 In a single chip it integrated zigbee RF, memory and 8051
microcontroller.
 When the system is in spare mode, CC2430 automatically goes
into sleeping mode and can switch between sleeping mode and
active made in ultra short time.

7. DESIGN OF END DEVICE AND
ROUTER
Schematic diagram of end device

8. SENSORS HARDWARE CONNECTION
ANGLE SENSOR:
The landslide warning system uses SCA60C as
angle sensor. It is used to detect the mountain angle.
Angle sensor hardware connection

9. LIQUID LEVEL SENSOR:
Liquid level sensors adopts PTP601, it integrates a
pressure level sensor and a signal amplifier.
Liquid level sensor connection

10. DESIGN OF THE COORDINATOR
 The coordinator node has a GSM module and a serial
communication module. It chooses SP3223 as the serial
communication module.
Schematic circuit of serial module

11. Circuit of GSM module

12. SOFTWARE DESIGN
This design adopts z-stack2006 which is free and half open
source zigbee protocol stack.
 It is made up of MAC layer, physical layer, network layer and
application layer.
A zigbee network allows one zigbee coordinator.

13. FLOW CHART OF TERMINAL NODE

14. CONCLUSION
 The sensor nodes are the bases of wireless sensor networks. It
includes a sensor network node system for landslide based on
CC2430 which can monitor the situation of mountain.