Discriminating ultrasonic proximity detection system

Patent · Tue Jan 24 00:00:00 EST 1989

OSTI ID:6043784

Annala, W C

This invention uses an ultrasonic transmitter and receiver and a microprocessor to detect the presence of an object. In the reset mode the invention uses a plurality of echoes from each ultrasonic burst to create a reference table of the echo-burst-signature of the empty monitored environment. The invention then processes the reference table so that it only uses the most reliable data. In the detection mode the invention compares the echo-burst-signature of the present environment with the reference table, detecting an object if there is a consistent difference between the echo-burst-signature of the empty monitored environment recorded in the reference table and the echo-burst-signature of the present environment.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4800540
• OSTI ID: 6043784
• Resource Relation: Patent File Date: Filed date 4 Dec 1986
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ENVIRONMENT
ULTRASONIC TESTING
EQUIPMENT
MICROPROCESSORS
NONDESTRUCTIVE TESTING
ACOUSTIC TESTING
COMPUTERS
ELECTRONIC CIRCUITS
MATERIALS TESTING
MICROELECTRONIC CIRCUITS
TESTING
420800* - Engineering- Electronic Circuits & Devices- (-1989)
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
420500 - Engineering- Materials Testing
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)