Unattended Ground Sensors
First Claim
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1. An unattended ground sensor comprising:
- a seismic sensor operable to detect seismic waves incident upon the unattended ground sensor and to generate seismic data therefrom;
a transmitter operable to transmit wirelessly signals from the unattended ground sensor;
a controller operable to receive signals from the seismic sensor corresponding to the seismic data and to send signals to the transmitter for onward transmission;
a power supply arranged to provide power to the unattended ground sensor; and
an elongate outer body within which the seismic sensor, the controller and the power supply are housed, wherein the elongate outer body has a shape that tapers to an end.
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Abstract
The present disclosure relates to unattended ground sensors for detecting the presence of a pedestrian or vehicle in a monitored area using seismic sensors. Networks of simple and inexpensive sensors are disclosed that may be rapidly deployed. The networks may be formed from a dense array of low cost ground sensors having low sensitivity.
15 Citations
18 Claims
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1. An unattended ground sensor comprising:
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a seismic sensor operable to detect seismic waves incident upon the unattended ground sensor and to generate seismic data therefrom; a transmitter operable to transmit wirelessly signals from the unattended ground sensor; a controller operable to receive signals from the seismic sensor corresponding to the seismic data and to send signals to the transmitter for onward transmission; a power supply arranged to provide power to the unattended ground sensor; and an elongate outer body within which the seismic sensor, the controller and the power supply are housed, wherein the elongate outer body has a shape that tapers to an end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A network of unattended ground sensors and a base station, wherein a ground sensor in the network comprises:
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a seismic sensor operable to detect seismic waves incident upon the ground sensor and to generate seismic data therefrom; a transmitter operable to transmit wirelessly signals from the ground sensor to the base station; and a controller operable to receive signals from the seismic sensor corresponding to the seismic data and to send signals to the transmitter for onward transmission to the base station, wherein the base station comprises a receiver operable to receive the signals transmitted by the ground sensor, and wherein the unattended ground sensors are arranged with a spacing between adjacent ground sensors of no more than thirty meters. - View Dependent Claims (11, 12, 13)
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14. A network of unattended ground sensors and a base station, wherein a ground sensor in the network of the unattended ground sensors comprises:
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a seismic sensor operable to detect seismic waves incident upon the ground sensor and to generate seismic data therefrom; a transmitter operable to transmit wirelessly signals from the ground sensor to the base station; and a controller operable to receive signals from the seismic sensor corresponding to the seismic data and to send signals corresponding to the seismic data to the transmitter for onward transmission to the base station, and wherein the base station comprises; a receiver operable to receive the signals corresponding to the seismic data transmitted by the ground sensor; and a processor operable to process the received signals corresponding to the seismic data and to identify events corresponding to movement of a pedestrian or a vehicle across a ground recorded by the ground sensor that provided the signal being processed. - View Dependent Claims (15, 16, 17, 18)
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Specification