Adaptive surveillance network and method

• US 8,144,197 B2
• Filed: 06/13/2005
• Issued: 03/27/2012
• Est. Priority Date: 03/30/2005
• Status: Active Grant

• Current Assignee: Aceinna Transducer Systems Company Limited
• Original Assignee: Memsic Transducer Systems Co., Ltd.
• Inventors: Broad, Alan S.
• Primary Examiner(s): Patel, Jay Au
• Assistant Examiner(s): PONTIUS, JAMES M
• Application Number:
  US11/152,350
• Publication Number:
  US 20100013933A1
• Time in Patent Office: 2,479 Days
• Field of Search: 348/159, 340/506, 370/255, 709/224
• US Class Current: 348/159
• CPC Class Codes: G08B 25/003 Address allocation methods and details
• CPC Class Codes: G08B 25/009 Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence
• CPC Class Codes: G08B 29/188 Data fusion; cooperative systems, e.g. voting among different detectors

Abstract

A plurality of modules interact to form an adaptive network in which each module transmits and receives data signals indicative of proximity of objects. A central computer accumulates the data produced or received and relayed by each module for analyzing proximity responses to transmit through the adaptive network control signals to a selectively-addressed module to respond to computer analyses of the data accumulated from modules forming the adaptive network. Interactions of local processors in modules that sense an intrusion determine the location and path of movements of the intruding object and control cameras in the modules to retrieve video images of the intruding object.

Claims

1. A first communication module, comprising:

a transceiver disposed to wirelessly receive a first data signal from a second communication module indicating detecting of an object at the second communication module;

a proximity sensor disposed to sense proximity of an object within a sensing field;

a processor coupled to the transceiver and to the proximity sensor for generating a second data signal indicating detection of the object within a sensing field responsive to confirming the detection of the object at the first communication module and the second communication module by correlating a sensor signal of the proximity sensor with the first data signal, the processor disposed to select a third communication module for transmitting the second data signal to a destination based on an amount of energy consumed to transmit the second data signals to the destination via the third communication module; and

an image capturing device configured to capture a first image of the object, the image capturing device selectively turned on in response to confirming detection of the object at the first communication module and the second communication module, the first image sent to the destination via the third communication module for comparison with a second image stored in the destination.

2. The first communication module according to claim 1, comprising a housing including a peripheral boundary and supporting the proximity sensor therein about the peripheral boundary for forming the sensor fields of view substantially entirely around the peripheral boundary.

3. The first communication module according to claim 1, wherein the amount of energy is determined by computing a number of packets successfully transmitted to other communication modules per a total number of packets transmitted to the other communication modules.

4. A network of a plurality of modules, comprising:

a first module disposed to send a wireless signal responsive to detecting an object within a first sensor field to the first module; and

a second module at a location spaced from the first module, the second module comprising a transceiver, a proximity sensor, a processor, and an image capturing device, the proximity sensor disposed to sense an object within a second sensor field, the processor disposed to;

activate the transceiver to receive the wireless signal from the first module;

confirm the detection of the object at the first module and the second module by correlating a sensor signal from the proximity sensor with the wireless signal received from the first module;

generate a data signal responsive to confirming the detection of the object;

select a third module in the network for transmitting the data signal to a destination, the third module selected based on an amount of energy consumed to transmit the data signal to the destination via the third module;

turn on the image capturing device selectively to capture a first image of the object responsive to confirming detection of the object at the first module and the second module; and

send the first image to the destination via the third module for comparison with a second image stored in the destination.

5. The network according to claim 4 where the destination comprises a central computer communicating with at least one module in the network, and disposed to receive data signals transmitted from one of the at least two modules for analyzing the data signals to confirm presence of the object.

6. The network according to claim 5, wherein the central computer includes a database storing the second image.

7. A method for computer-implementing a network of a plurality of modules, the method of comprising:

at a first module, sending a wireless signal responsive to detecting proximity of an object;

at a second module,

activating the transceiver to receive the wireless signal;

confirming the detection of the object by correlating a sensor signal generated at the second module with the wireless signal received from the first module;

generating a data signal responsive to confirming the detection;

selecting a third module in the network for transmitting the data signal to a destination, the module selected based on an amount of energy consumed to transmit the data signal to the destination via the third module;

turning on an image capturing device to capture a first image of the object responsive to confirming the detection of the object at the first module and the second module; and

sending the image of the object to the destination via the third module for comparison with a second image stored in the destination.

8. The method of claim 7, wherein the amount of energy is determined based on a portion of packets successfully transmitted to modules.

9. The method according to claim 7 wherein the destination comprises a central computer for confirming presence of the object.

10. The method according to claim 9, wherein the central computer includes a database of stored video image data representative of background images viewed by a video camera in the absence of the object.

11. The method according to claim 10, further comprising at the central computer transmitting a command to the first module for activating an image capturing device of the first module.

12. The method according to claim 10, further comprising:

at the central computer, transmitting command signals for controlling fields of view of video cameras in modules in the vicinity of the object; and

at the central computer, receiving video image data signals from the modules in the vicinity of the object for storage in the database of the central computer.

13. A method of operating a first module in a network of a plurality of modules, the method comprising:

detecting proximity to an object by a proximity sensor of a first module;

confirming the detection by correlating a sensor signal generated at the proximity sensor of the first module with a wireless signal received from a second module;

generating a data signal responsive to confirming the detection of the object at the first module and the second module;

selecting a third module in the network for transmitting the data signal to a destination, the module selected based on an amount of energy consumed to transmit the data signal to the destination via the third module;

turning on an image capturing device of the first module to capture a first image of the object responsive to confirming detection of the object at the first module and the second module; and

sending the image of the object to the destination via the third module for comparison with a second image stored in the destination.

14. The method according to claim 13 further comprising communicating wirelessly to modules in the network in the absence of sensed proximity of an object for establishing reference time in each module for comparison thereof with the detection of the object.

15. The method of claim 13, wherein the amount of energy is determined by computing a number of packets successfully transmitted to modules per a total number of packets transmitted to the modules.