Otis Elevator Company

Environmental Systems Products Holdings Inc.

Gary G Full

Donald Hugh Stedman

Gary Allen Bishop

Richard D Pustelniak

Bertram F Kupersmith

Gregory A Schienda

Julian H Shull

Gary A Bishop

A remote emissions sensing (RES) system and method for measuring the exhaust gas composition of a motor vehicle is provided, including calibration methodologies for compensating for the effects of ambient temperature and/or pressure.

System and method for remote emissions sensing including calculation and calibration techniques compensating for temperature and pressure effects

A remote emissions sensing system and method for sensing exhaust emissions from motor vehicles is provided where the system determines the opacity of an exhaust plume. The system comprises a radiation source that emits radiation which is passed through the exhaust plume of a motor vehicle to one or more detectors arranged to receive the radiation. Multiple wavelength opacity measuring embodiments and monochromatic wavelength opacity measuring embodiments are disclosed.

Exhaust opacity measuring device

A method and apparatus for detecting the distance between opposing sides of an elevator door system is presented. The invention enhances the ability of an elevator door safety system to discriminate between false targets and true obstructions. The method detects distance between a first plurality of emitters and a first plurality of receivers mounted on the opposing sides of the elevator door system. The method comprises emitting an energy beam from an emitter. A halo component of the energy beam, having a predetermined wide angle, is sampled with the plurality of receivers to provide a set of energy signals indicative of intensity of the halo component energy sampled. From the set of energy signals, a vertical distance from the center of the pattern to an intersection of the halo component with the first plurality of receivers is determined. The distance between the first plurality of emitters and receivers is then calculated utilizing the predetermined wide angle and the vertical distance.

Method and apparatus for detecting position of an elevator door

A safety system for detecting an obstruction approaching closing doors includes a transmitter stack and a detector stack. Each transmitter stack includes a plurality of transmitter three-dimensional lenses. Each detector stack includes a plurality of detector three-dimensional lenses. The three-dimensional lenses are offset from the corresponding optical devices to angle an outgoing or incoming signal. The present invention results in more compact packaging for the safety system and in reduced cost of the assembly therefor.

Safety detection system for sliding doors

A safety system for detecting small objects that approach closing doors comprising a transmitter stack, a detector stack, and a controller including instructions to detect small objects as the doors are closing. A transmitter or a group of transmitters from the transmitter stack are powered sequentially resulting in an output from the detector stack. The controller compares each output from the detector stack with an average of all the outputs plus a threshold value. The outputs that exceed the average plus threshold value trigger the safety system to reverse closing operation of the doors.

Safety system for detecting small objects approaching closing doors

A safety system for detecting objects or persons that approach closing doors includes a plurality of detectors on one door and a plurality of transmitters on an opposite door. The plurality of transmitters emit a signal at an angle into a hallway. The intensity of the signal emitted from the transmitters is progressively reduced as the distance between the closing doors is decreasing. The reduction in intensity of the transmitted signal allows discrimination between actual targets and false targets.

A serial signal communications system includes a central station unit connected through a balanced impedance signal communication bus to one or more remote station units.

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Tucson, AZ, United States of America

Gary G Full