METHOD AND HAND-OPERATED SENSOR WITH ADAPTIVE DETECTION THRESHOLD FOR THE DETECTION OF FOREIGN OBJECTS EMBEDDED IN BUILDING STRUCTURE SUBGRADES
First Claim
1. A method for detection of objects embedded in building structure subgrades, comprising the steps of:
- sweeping a hand-operated sensor with an adaptive detection threshold over a surface area of the building structure subgrade being analyzed; and
recording a change in a direction of movement of the sensor being swept over the surface area with respect to an embedded object.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for the detection of objects embedded in building structure subgrades such as cable, concrete reinforcing bars, conduit pipe and the like as well as a hand-operated sensor with an adaptive detection threshold operating according to the method, is disclosed. To reduce an over-detection with the adaptation of the detection threshold, a change in the direction of movement of the sensor being guided over the surface area is recorded with respect to an embedded object. The determination of a change in the direction of movement preferably takes place by measuring the sensor acceleration in two directions with respect to the embedded object. Corresponding speeds are computed at least as estimates from the acceleration values in order to generate a conclusion about a reversal of the direction of movement.
25 Citations
15 Claims
-
1. A method for detection of objects embedded in building structure subgrades, comprising the steps of:
-
sweeping a hand-operated sensor with an adaptive detection threshold over a surface area of the building structure subgrade being analyzed; and recording a change in a direction of movement of the sensor being swept over the surface area with respect to an embedded object. - View Dependent Claims (2)
-
-
3. The method according to claim 3, wherein a signal is generated as a function of a path of the sensor from the estimated speed values and a conclusion is obtained therefrom about a dimension and a depth of the embedded object.
-
4. A hand-operated sensor with an adaptive detection threshold for detection of objects embedded in building structure subgrades, comprising:
a motion sensor device, wherein the motion sensor device determines a change in a direction of movement of the sensor when guided over a surface area with respect to an embedded object. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification