Apparatus for counting people or objects
First Claim
1. Device for counting people or objects comprising a detection and counting unit intended to be positioned above the passageway to be monitored and one of the axes of which is perpendicular to the direction of the movement of the people or objects moving in said passageway, characterized by the fact that the detection unit comprises an optical sensor (1) and an information processing control unit, the optical sensor being constituted by two charge coupled modules (3, 4), which are linear, identical, fixed parallel in relation to each other and transversely in relation to the passageway to be monitored and separated from each other by a sufficient distance D to enable the processing unit that controls them to determine in real time the entering and leaving direction of each movement as well as the total number of movements, said processing unit performing a monitoring of the temporal evolution of the background sensed by the optical sensor (1) for the extraction of the crude modifications due to the passage of said person or said object.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for counting people or objects in a passageway including an information processing control until and an optical sensor positioned above the passageway, the optical sensor including two identical charge coupled modules which are linear and fixed parallel to each other and transversely to the passageway and separated from each other by a distance D enabling the processing unit to determine in real time an entering and leaving direction of each movement in the passageway and a total number of movements in the passageway, wherein the processing unit monitors the temporal evolution of background noise sensed by the optical sensor for extracting crude modifications due to the passage of a person or object.
13 Citations
8 Claims
- 1. Device for counting people or objects comprising a detection and counting unit intended to be positioned above the passageway to be monitored and one of the axes of which is perpendicular to the direction of the movement of the people or objects moving in said passageway, characterized by the fact that the detection unit comprises an optical sensor (1) and an information processing control unit, the optical sensor being constituted by two charge coupled modules (3, 4), which are linear, identical, fixed parallel in relation to each other and transversely in relation to the passageway to be monitored and separated from each other by a sufficient distance D to enable the processing unit that controls them to determine in real time the entering and leaving direction of each movement as well as the total number of movements, said processing unit performing a monitoring of the temporal evolution of the background sensed by the optical sensor (1) for the extraction of the crude modifications due to the passage of said person or said object.
Specification