Pedestrian traffic counting system
First Claim
1. Method of determining the direction of travel of objects traveling across a surface having a plurality of zone locations, comprising the steps of:
- sensing contact events between the surface and the objects traveling across the surface;
recording a timestamp and a zone location corresponding to each contact event;
identifying contact event sequences according to predetermined criteria defining relationships between the timestamps and the zone locations corresponding to the contact events;
relating individual objects to individual contact event sequences; and
assigning a direction of travel to the individual objects according to the predetermined criteria.
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Accused Products
Abstract
A counting apparatus including a sensor surface having a plurality of zone locations with pressure actuated switches which produce a contact event signal corresponding to the zone location when an object traveling across the sensor surface contacts the zone location, a microprocessor connected to the pressure actuated switches having software for analyzing the contact event signals according to predetermined temporal and spatial criteria stored in the memory of the microprocessor, the microprocessor producing an increment signal when a sequence of contact event signals satisfies one set of criteria related to "in" counts and a second increment signal when a sequence satisfies another set of criteria related to "out" counts, and a counter with a two-channel count register which increments one channel in response to an "in" increment signal and increments a second channel in response to an "out" increment signal.
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Citations
15 Claims
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1. Method of determining the direction of travel of objects traveling across a surface having a plurality of zone locations, comprising the steps of:
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sensing contact events between the surface and the objects traveling across the surface; recording a timestamp and a zone location corresponding to each contact event; identifying contact event sequences according to predetermined criteria defining relationships between the timestamps and the zone locations corresponding to the contact events; relating individual objects to individual contact event sequences; and assigning a direction of travel to the individual objects according to the predetermined criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A counting apparatus, comprising:
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a sensor surface having a plurality of zone locations, each zone location having a switch which outputs a contact event signal corresponding to the zone location when an object traveling across the sensor surface contacts the zone location; a microprocessor connected to the switches, the microprocessor being adapted to receive and analyze the contact event signals according to predetermined criteria, the microprocessor producing a first signal when a sequence of contact event signals satisfies one set of criteria and a second signal when a sequence of contact event signals satisfies another set of criteria; and a counter connected to the microprocessor, the counter incrementing one count register in response to the first signal and incrementing a second count register in response to the second signal. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification