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PMT Zone Sensor

 

PMT’s new Zone Sensor is designed for installation on vehicles with stepwells where Treadle Switches cannot be employed, or non-contact sensing is otherwise required. With Zone Sensors as the input devices for PMT's Automatic Passenger Counting (APC) System, our proven finite-state algorithm yeilds reliable, accurate passenger counts.

Features

  • Diffuse-Reflective Active IR Technology
  • Optical Design Virtually Eliminates Maintenance 
  • Field-Alignment for Virtually any Doorway Offers Easy Installation in Most Vehicle Types
  • Based on Design of PMT's Proven Infrared Transceivers
The Zone Sensor concept was developed in response to requests for non-contact sensing, but with similar characteristics to PMT's Treadle Switch based Automatic Passenger Counting System. The Zone Sensor is intended for applications where the use of Treadle Switches is impractical or undesirable. The Zone Sensors can also be used as Treadle Switch replacements where Treadle Switches are already installed.
Typically, 2 Zone Sensors are mounted above each vehicle stepwell. The exact number of Zone Sensors and their placement depends on stepwell configuration.
The Zone Sensor employs diffuse-reflective near-infrared sensing. The design is based on PMT's proven Infrared Transceiver technology, and optimized for passenger detection. The simple optical design has no moving parts for high reliability. Overall accuracy of an APC system using Zone Sensors should be 90 to 95%.

APC System with Zone Sensors Diagram
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Updated Feb 8 2002
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