Termite acoustic detection

• US 7,271,706 B2
• Filed: 10/07/2003
• Issued: 09/18/2007
• Est. Priority Date: 10/09/2002
• Status: Expired due to Fees

• Current Assignee: University of Mississippi
• Original Assignee: University of Mississippi
• Inventors: Lee, Peng
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US10/680,377
• Publication Number:
  US 20060028345A1
• Time in Patent Office: 1,442 Days
• Field of Search: 340/384.2, 340/388.1, 340/573.1, 340/566, 431/07, 431/321
• US Class Current: 340/384.2
• CPC Class Codes: A01M 1/026 combined with devices for monitoring insect presence, e.g. termites bait stations A01M1/2005; detecting other animals in a given area A01M31/002
• CPC Class Codes: A01M 1/24 Arrangements connected with buildings, doors, windows, or the like

Abstract

A method and system for detecting the presence of subterranean termites, involving use of a thermal imaging camera to scan the structure before installation of an acoustic sensor in order to quickly locate potential areas of subterranean termite infestation, and an acoustic sensor in the form of an accelerometer or the disclosed innovative acoustic sensors having a bandwidth of at least 100 Hz to 15 kHz to detect noises made by the subterranean termites. Information collected by the acoustic sensor may be transmitted to a portable mini-computer (pocket PC) for confirmation and to a central operations center for inclusion in a comprehensive database of termite data and information. A method and system for detecting the presence of dry-wood termites concealed in a structure, involving use of a heat source to warm up the wooden structure of interest and then using a thermal imaging camera to scan the structure for suspicious dry-wood infestation, followed by the use of an acoustic sensor and pattern recognition software to more precisely and accurately locate potential area of dry-wood termite infestation. Additionally, structural damage can be evaluated by the methods discussed herein, including live trees. Additionally, the method can be used to manipulate termite infestation behavior.

Claims

1. An acoustical sensor for detection of insect infestation in a residential structure comprising:

(a) a sealed chamber including internal sensor components, said internal sensor components comprising;

a diaphragm configured to detect structure-borne sound;

a means to mechanically amplify the sound produced by said diaphragm;

a means to receive airborne sound and to convert said sound to an electrical signal wherein said sealed chamber is configured to maintain signal integrity; and

(b) a detection member having a proximal and a distal end, said proximal end contacting said diaphraam and said distal end configured to be inserted into a potential infestation site without damaging said residential structure.

2. The sensor of claim 1 wherein said detection member is a spike permanently attached to said sensor, wherein said spike is between 10 to 16 gauge in diameter.

3. The sensor of claim 1 wherein said detection member is a probe reversibly attached to said sensor, wherein said probe is between 10 to 16 gauge in diameter.

4. The sensor of claim 1 wherein said means to mechanically amplify the sound is a stethoscope.

5. The sensor of claim 1 wherein, the means to receive airborne sound and to convert said sound to an electrical signal is a microphone.

6. A method of collecting data concerning termites, comprising the steps of:

(a) inserting a distal end of a detection member of the acoustical sensor of claim 1 into a residential structure; and

(b) detecting signals from said sensor to collect data;

(c) transmitting data collected by the sensors to a central operations center for inclusion in a central database of termite data.

7. A method to detect wood destroying insect infestation of a residential structure comprising:

(a) affixing a distal end of a detection member of the acoustical sensor of claim 1 to portions of a residential structure;

(b) transmitting signals from said sensor to a computing device;

(c) comparing detected signals with control signals; and

(d) detecting wood destroying insect infestation of said residential structure if said detected signal is substantially similar to said control signals.

8. The method of claim 7 wherein said detection vibration signals are between 0.5 and three milliseconds in length.

9. The method of claim 7 wherein said computing device is a central processor.

10. The method of claim 7 wherein said computing device is a hand held process.

11. The method of claim 7 wherein said wood destroying insects are termites.

12. The method of claim 7 wherein the control signal stored in the computing device is modified to include the detected signals.

13. The acoustical sensor of claim 1 wherein said detection member is between 6 to 12 inches in length.