Systech International, LLC

Envirotest Systems Corporation

Nexus Environmental, LLC

Pradeep R Tripathi

Bruce R Kohn

Lothar Geilen

Donald W Bilsbarrow

Gorakh Nath Ram Tripathi

A method and system for detecting a chemical using SERS includes shifting the absorption wavelength signature of the precursor chemical toward a higher wavelength. SERS is performed on the wavelength shifted chemical in order to determine the concentration of the precursor chemical.

Surface and resonance-enhanced Raman detection method and apparatus

A method of verifying regulatory compliance of a vehicle having a vehicle diagnostic system includes providing a vehicle unit having an adapter that is configured to connect with a vehicle diagnostic port of the vehicle diagnostic system. The vehicle unit further includes a vehicle wireless transceiver and a memory. The adapter is connected with the vehicle diagnostic port and receives vehicle data including exhaust emission parameters. The vehicle data is stored in the memory. A communication network is provided for two-way wireless communication with the vehicle unit. The communication network is made up of a plurality of geographically dispersed wireless communication transceivers. The vehicle wireless communication transceiver is activated with one of the geographically dispersed wireless communication transceivers when the vehicle wireless communication transceiver is in a vicinity of that geographically dispersed wireless communication transceiver to communicate the stored vehicle data to that one of the geographically dispersed wireless communication transceivers. A host computer system with access to the communication network receives vehicle data from the geographically dispersed wireless communication transceivers. A database accessed by the host computer system collects environmental regulatory compliance data. Environmental authority is provided access to the database to verify regulatory compliance.

Method of verifying regulatory compliance of a vehicle having a vehicle diagnostic system

A vehicle communication system and method of communicating data from a vehicle, such as for inspecting or diagnosing a vehicle, includes providing a plurality of vehicle units each including a vehicle wireless communication transceiver and a memory. Data, such as vehicle data from a vehicle diagnostic system, is stored in the memory. A communication system is provided for two-way wireless communication with the vehicle units. The communication system is made up of one or more mobile wireless communication transceivers. Vehicle data is communicated from the memory to one of the mobile wireless communication transceivers that is in the vicinity of that vehicle unit. The transporting of the mobile wireless communication transceiver increases interaction between the communication system and the vehicle units.

Vehicle communication system and method with mobile data collection

A method and apparatus for detecting abnormal behaviour in a vehicle ( ) with an engine having engine control module includes providing a database ( ), and a vehicle analyzer ( ) having a communication device ( ) and an interface ( ) that links the communication device ( ) to a vehicle ( ). Engine parameters that are retrieved through the interface ( ) during driving experience are uploaded to the database ( ) using the communication device ( ). The database ( ) analyzes the engine parameters from multiple driving experiences to establish historical data and determine normal operation of particular retrieved engine parameters based on the historical data. A vehicle ( ) can be diagnosed by comparing its retrieved engine parameters with the database ( ).

Monitoring of vehicle health based on historical information

The combination of ambient air, exhaust and premeasured calibration gases is used according to this invention in the analysis of either low or high pollutant concentration gases measured by a single range analyzer. By using ambient air as a diluent and employing its concentration values to generate the Reference Dilution Ratio, DR.sub.ref, iterative calculations are made to find the Raw Sample Concentration value, C.sub.raw. The gas diluting/mixing system includes pressure balanced infeed plumbing legs. Each of the legs feeds to respective flow restrictors and a common, downstream mixing 'T' fitting. One leg is interconnected to the high concentration emission gas output from the sampling system and high concentration calibration gas. The other leg is interconnected to the diluent gas source, ambient air.

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Miami Beach, FL, United States of America

Pradeep R Tripathi