Sensol’s ground sensor modules are only 170 mm in diameter and 25 mm high. On deployment the sensor is merely placed, spiked or spun into position and left as the antenna automatically unfolds while the sensor is removed from its housing. It also contains a GPS subsystem to identify its position and to forward that information to a control centre.

Figure 1 - The Land 150 Ground Sensor.

Figure 2 -Ground Sensor with Self-Unfolding Antenna.

Ground sensors developed for military purposes are focussed on providing capability for use in battlefield, urban or base protection with a common unit. This unit is 22 mm high and 174 mm in diameter.

Each ground sensor can contain:

• RF transceiver for communications using low power spread spectrum for low POI
• GPS subsystems for geo-location to minimise placement in rapid deployment situations
• 4 video cameras
• 4 acoustic sensors
• a triaxial accelerometer
• a magnetic sensor
• provision to add a geophone for footstep detection even in sand
• provision for solar panel or charger
• A charging cradle capable of holding six ground sensor units has been developed. No cable attachment is required with the use of this charger so sensors can be quickly removed and deployed.

The 6 pack module

The six pack module contains six ground sensors on charge ready for use. The module contains provision for:

• detecting if it is moved or tampered wit
• 4 cameras to provide 360º view
• 4 microphones for a 360º pickup
• magnetic sensor for counting passing traffic
• vibration sensor for detecting footsteps in dirt and sand (on a stand for hard surfaces and a spike for soft surfaces)
• low power spread spectrum RF link for communications
• internal li-polymer batteries and socket for charging by mains, solar or battery.