Browse Prior Art Database

Status Detection Using Set of a Small Sensors

IP.com Disclosure Number: IPCOM000118801D
Original Publication Date: 1997-Jul-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Funahashi, T: AUTHOR [+2]

Abstract

Disclosed is an automatic alert system using a set of small sensors. By locating the infrared human sensors in the front of operator panels of machines in the security area, and by watching the sensor detection strength and detection time sequence, the system guesses if the human does regular operation. If the detected person does not behave as expected, this system makes alerts.

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Status Detection Using Set of a Small Sensors

      Disclosed is an automatic alert system using a set of small
sensors.  By locating the infrared human sensors in the front of
operator panels of machines in the security area, and by watching the
sensor detection strength and detection time sequence, the system
guesses if the human does regular operation.  If the detected person
does not behave as expected, this system makes alerts.

      The Figure shows an example of the sensor's location.  Human
sensor (A) is set in front of dummy CAS panel (X).  Human sensor (B)
is set in front of CAS operation panel (Y).  Spot type Sensor (C) is
set in the ceiling.  Also, spot type sensors (D,E) are set in the
ceiling.  A typical authorized person walks under sensor (E), and
(D), in front of (B) in, for example, 3 seconds.  An example of
detection rule is as follows:

      If the person from entrance (E) walked to (C), not to (D), add
3 points.  If the person remains in front of (A) more than 2 seconds,
add 4 points.  If it takes more than 6 seconds to reach (B) from (E),
add 3 points.  If it takes more than 3 seconds to reach (D) or (C)
from (E), add 6 points.  If it takes more than 3 seconds to reach (A)
or (B) from (C) or (D), add 3 points.

      If the total score becomes more than 8 points, the system
judges that the person is not authorized and sends an alert to
security.  An ordinary security system has a Television (TV) camera.
The security perso...