Spx Corporation

Environmental Systems Products Holdings Inc.

Envirotest Systems Holdings Corp.

Millennium Engineering and Integration Company

John DiDomenico

Craig S Rendahl

Robert Allen Gentala

Paul F Kyle

James Johnson

Theresa A Foley

Max Michael Briggs

Edward James Bevan

Robert W Gedridge

Raghunandan Agaram

Ronald J McNeill

Graig S Rendahl

Brett J Morien

George T Hovancik

Apparatus for obtaining the speed and acceleration of a motor vehicle in which the speed and acceleration are used in combination with exhaust emissions data obtained from the motor vehicle to analyze information about the pollutants being dispersed into the air by the motor vehicle. The apparatus includes a first radiation source producing a visible laser beam received by a first detector and a second radiation source producing a visible laser beam received by a second detector. The first and second radiation sources are arranged along the roadway with a known spacing and at a height so that the visible laser beams are interrupted by the front and rear wheels of the motor vehicle as it passes along the roadway. The detectors provide output pulses indicating whether the visible laser beams are interrupted and the time of the occurrence of each of the pulses is measured and recorded. An analyzer then calculates the speed and acceleration from the known spacing distance and the stored time measurements.

Speed and acceleration monitoring device using visible laser beams

A hand-held, fleet deployable infrared camera with integrated hardware and software providing real time processing of infrared images. The camera senses variable temperature images over a selected object of interest and senses variable emissivities over the object. The camera also measures and corrects for reflected environmental radiation as well as corrections for the atmospheric path through which the object is viewed. A calibrated reference patch having known emissivity and reflectance is attached to an object of interest and viewed through the camera. The calibrated patch is used to provide correction for the environmental radiation reflected off the object. Once the environmental radiation correction is known, it can be used to correct measurements taken from the rest of the object of interest.

Compact emissivity and temperature measuring infrared detector

A system for collecting and managing information relating to vehicles includes a digital image collection system positioned to capture an image of a vehicle travelling along a roadway. The captured images are delivered to a computer program memory via a communications link at a transfer rate substantially equal to 100, 200, and/or 400 megabits per second. A second device collects additional information relating to the vehicle, such as the vehicle's speed, acceleration, and/or emissions data, and also delivers such information to the memory. Alternatively, two or more video capture devices may be connected in series via communications links that are all capable of transmitting data at rates substantially equal to 100, 200, and/or 400 megabits per second, such that the images collected by all of the capture devices are delivered to the memory.

Method and system for video capture of vehicle information

A remote sensing device for determining at least one characteristic of a vehicle emission plume includes a radiation source, a detector, and a plurality of filters. Either the filters or the detector are movable relative to the other such that different filters, each of which is capable of filtering out radiation except radiation of a predetermined wavelength band, can be used to filter the radiation directed to the detector. Also disclosed is a method for remotely determining at least one characteristic of a vehicle emission plume using a single detector and a plurality of filters wherein either the detector or the filters are positionable relative to one another.

Remove vehicle emission sensing device with single detector

A remote emissions sensing system is provided with NOdetection capability. First, a reading of the ambient NOconcentration is taken just prior to each vehicle passing through the system. This measurement accounts for any ambient NOconcentration that may be lingering from the exhaust of a previous vehicle. Next, the system takes a blocked reading when the vehicle is located in the path of the beam. This reading accounts for any ambient or system noise that may exist. Finally, the system takes a reading of the exhaust plume as the beam passes through the plume. A processor determines the portion of the reading due to the exhaust plume by subtracting the ambient and blocked readings from the exhaust plume reading. As a result, a more accurate exhaust concentration reading is provided. Additionally, the system may process exhaust plume readings only in a predetermined wavelength band associated with the known absorption spectrum of NOso that data points for which there is no significant absorption of NOmay be eliminated. Thus, any noise or other interference in the non-absorptive wavelengths are minimized. Also, changes in the intensity of the radiation are compensated by subtracting a baseline intensity from each signal.

[object Object]

A system for processing sensed vehicle data includes a sensor for sensing data related to at least one characteristic of a passing vehicle and a host unit that receives sensed data from the sensor. The sensor and the host unit are integrated into a single housing. The host stores data and communicates with peripheral devices and/or with a central processing facility.

Software architecture of an integrated host system for sensed vehicle data

A device for measuring particulate matter includes a light source that emits light, a receiver positioned to receive light emitted from the light source, and a detection unit in communication with the receiver. The detection unit detects an amount of particulate matter based upon the light received by the receiver.

Optical path structure for open path emissions sensing with particulate matter and lubricating oil consumption absorption methodology

An optical system for a gas component analysis includes an emitter for emitting first light beam having a first spectrum, a second emitter for emitting a second light beam at a second spectrum, a first receiver for receiving the first light beam, and a second receiver for receiving the second light beam.

Optical path structure for open path emissions sensing with opposed sources

An apparatus and method for measuring the speed and/or acceleration of a vehicle traveling on a vehicle path includes at least one radiation emitting device and at least two radiation receiving devices. Mirrors and/or beam splitter are used to direct at least one beam across the vehicle path. A controller calculates speed and/or acceleration of the vehicle in response to interruption of the at least one beam by a passing vehicle. The system can also include a mass sensor that detects the mass of the vehicle.

Apparatus and method for measuring vehicle speed and/or acceleration

An audit vehicle and audit method are provided for testing the performance of a remote emissions sensing system. The vehicle emits known gases. The vehicle includes a gas delivery system and senses and records telemetry information such as vehicle speed read by a sensor on a non-driven wheel, GPS information, atmospheric information, IR light information, road temperature sensing information, and gas flow rate information.

Audit vehicle and audit method for remote emissions sensing

An apparatus and method for measuring the speed and/or acceleration of a vehicle traveling on a vehicle path includes sender/detector units on one side of the vehicle path and corresponding retro-reflector matrix units on the other side of the vehicle path. A controller calculates speed and/or acceleration of the vehicle in response to interruption of the beam by a passing vehicle.

A gas component analysis system transmits, reflects, and detects light using infrared light source; a reflector unit; and a light detector. The light is transmitted through a gas, such as air containing vehicle emissions, reflected, and detected for analysis and measurement of the amount of absorption that has occurred at known wavelengths. The amount of absorption may be used to determine concentrations of reference gases corresponding to specific wavelengths.

Optical path structure for open path emissions sensing

Optical path structure for open path emissions sensing with spinning mirror

Optical path structure for open path emissions sensing with spinning filter wheel

A support for supporting two or more units used in a system for measuring a speed and or acceleration of a vehicle, with the support able to rest on a surface, has an elongated bar on which the units are mounted. A first leg and a second leg are both mounted to the bar. A third leg is mounted to a rear portion of the bar. The legs are height-adjustable.

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Tucson, AZ, United States of America

John DiDomenico