Equipment for approach area monitoring for escalator and travelling walkways

• US 5,923,005 A
• Filed: 12/01/1997
• Issued: 07/13/1999
• Est. Priority Date: 12/16/1996
• Status: Expired due to Term

• Current Assignee: Inventio AG (Schindler Holding AG)
• Original Assignee: Inventio AG (Schindler Holding AG)
• Inventors: Wiesinger, Josef, Blondiau, Dirk
• Primary Examiner(s): Nappi, Robert E.
• Application Number:
  US08/987,543
• Time in Patent Office: 589 Days
• Field of Search: 198/321, 198/322, 187/392, 187/317, D25/62
• US Class Current: 187/392
• CPC Class Codes: B66B 25/00 Control of escalators or moving walkways walkways of variable speed type B66B21/12; handrails of variable speed type B66B23/26; of general application G05

Abstract

Equipment for monitoring an approach area of a moving belt apparatus (1), such as an escalator or a travelling walkway, and for controlling a drive for the belt includes light sensors (12) arranged in handrail entry caps (11) of balustrades (3). Each light sensor (12) has an emitter (15) and a receiver (16) and operates with, for example, infrared beams. The light sensors (12) monitor the access to the moving belt apparatus (1) in a specific region (13) in front of an entry to the belt (2), for example, the region of the threshold plate (14). On stepping into the monitoring region (13) of the light sensor (12), the beams emitted by the emitter (15) are reflected by the person and sensed by the associated receiver (16) to switch on the drive.

Claims

1. Equipment for use in monitoring an entry region adjacent to an end of a belt of a moving belt apparatus and for controlling a drive for moving the belt, the moving belt apparatus further including at least one balustrade pedestal extending alongside the belt, a balustrade on the one balustrade pedestal and having a handrail deflection at the entry region, a threshold plate adjacent the end of the belt at the entry region, and a handrail entry cap on the one balustrade pedestal at a lower part of the handrail deflection, the moving belt apparatus switching on the drive to move the belt in response to a signal representing a person in the entry region, the equipment comprising:

at least one light sensor integrally mounted in a handrail entry cap of a moving belt apparatus for monitoring an entry region at a threshold plate of the moving belt apparatus and for generating a signal upon sensing a person in the entry region, said one light sensor including an emitter for generating a light beam in a defined region of the entry region and an adjacent receiver for generating said signal upon sensing said light beam reflected from the person in said defined region whereby upon mounting of said light sensor, an opportunity for vandalism and damage of said light sensor is reduced and a visual impression of the moving belt apparatus remains unchanged.

2. The equipment according to claim 1 wherein said one light sensor is mounted in the handrail entry cap adjacent a handrail running on a balustrade and entering a balustrade pedestal on which the balustrade and the handrail entry cap are mounted.

3. The equipment according to claim 1 wherein said one light sensor generates an infrared light beam and responds to reflections of said infrared beam.

4. The equipment according to claim 1 wherein the moving belt apparatus is one of an escalator and a travelling walkway.

5. The equipment according to claim 1 including another light sensor integrally mounted in another handrail entry cap on a side of the moving belt apparatus opposite said one light sensor for monitoring the entry region and for generating said signal upon sensing a person in the entry region, said another light sensor including an emitter for generating another light beam in another defined region of the entry region and an adjacent receiver for generating said signal upon sensing said another light beam reflected from the person in said another defined region whereby upon mounting of said another light sensor, an opportunity for vandalism and damage of said another light sensor is reduced and a visual impression of the moving belt apparatus remains unchanged.

6. The equipment according to claim 5 wherein said light beams generated by said light sensors cross one another in the entry region.

7. Equipment for use in monitoring an entry region adjacent to an end of a belt of a moving belt apparatus and for controlling a drive for moving the belt, the moving belt apparatus further including at least one balustrade pedestal extending alongside the belt, a balustrade on the one balustrade pedestal and having a handrail deflection at the entry region, a threshold plate adjacent the end of the belt at the entry region, and a handrail entry cap on the one balustrade pedestal at a lower part of the handrail deflection, the moving belt apparatus switching on the drive to move the belt in response to a signal representing a person in the entry region, the equipment comprising:

at least one light sensor integrally mounted in a handrail deflection of a balustrade of a moving belt apparatus for monitoring an entry region at a threshold plate of the moving belt apparatus and for generating a signal upon sensing a person in the entry region, said one light sensor including an emitter for generating a light beam in a defined region of the entry region and an adjacent receiver for generating said signal upon sensing said light beam reflected from the person in said defined region whereby upon mounting of said light sensor in the handrail deflection adjacent a handrail running on the balustrade, an opportunity for vandalism and damage of said light sensor is reduced and a visual impression of the moving belt apparatus remains unchanged.

8. A moving belt apparatus having a drive that is switched on, when a person is sensed in an entry region before stepping onto a belt driven by the drive comprising:

a belt driven by a drive;

a pair of balustrades extending along opposite sides of said belt and each forming a handrail deflection at an end of said belt at an entry region, each said balustrade being mounted on an associated balustrade pedestal and having a handrail running thereon, each said handrail entering said associated balustrade pedestal through an associated handrail entry cap;

a threshold plate positioned adjacent said end of said belt in said entry region; and

at least one light sensor integrally mounted in one of said handrail deflections and said handrail entry caps for monitoring a first defined region of said entry region at said threshold plate, said one light sensor generating a first light beam in said first defined region and generating a first signal upon sensing a reflection of said first light beam from a person in said first defined region whereby upon mounting of said one light sensor, an opportunity for vandalism and damage of said one light sensor is reduced and a visual impression of the moving belt apparatus remains unchanged.

9. The moving belt apparatus according to claim 8 including another of said light sensors integrally mounted in one of said handrail deflections and said handrail entry caps on a side of said belt opposite said one light sensor for monitoring a second defined region of said entry region at said threshold plate, said another light sensor generating a second light beam in said second defined region of said entry region and generating a second signal upon sensing a reflection of said second light beam from a person in said second defined region and wherein said first and second light beams cross one another in said entry region.