摘要: |
The primary purpose of the "modification and validation of an automotive data processing unit(DPU), compressed video system, and communications equipment" cooperative research anddevelopment agreement (CRADA) was to modify and validate both hardware and software,developed by Scientific Atlanta, Incorporated (S-A) for defense applications (e.g., rotary-wingairplanes), for the commercial sector surface transportation domain (i.e., automobiles and trucks).S-A also furnished a state-of-the-art compressed video digital storage and retrieval system(CVDSRS), and off-the-shelf data storage and transmission equipment to support the dataacquisition system for crash avoidance research (DASCAR) project conducted by Oak RidgeNational Laboratory (ORNL). In turn, S-A received access to hardware and technology relatedto DASCAR. DASCAR was subsequently removed completely and installation was repeated anumber of times to gain an accurate idea of complete installation, operation, and removal ofDASCAR. Upon satisfactory completion of the DASCAR construction and preliminaryshakedown, ORNL provided NHTSA with an operational demonstration of DASCAR at theirEast Liberty, OH test facility. The demonstration included an on-the-road demonstration of theentire data acquisition system using NHTSA'S test track. In addition, the demonstration alsoconsisted of a briefing, containing the following:ORNL generated a plan for validating the prototype data acquisition system with regard to:removal of DASCAR from an existing vehicle, and installation and calibration in other vehicles;reliability of the sensors and systems; data collection and transmission process (data integrity); impacton the drivability of the vehicle and obtrusiveness of the system to the driver; data analysisprocedures; conspicuousness of the vehicle to other drivers; and DASCAR installation andremoval training and documentation. In order to identify any operational problems not capturedby the systems testing and evaluation, the validation plan also addressed a short-term pilotresearch program to manipulate DASCAR under operational conditions using "naive" drivers.The effort exercised the fill capabilities of the data acquisition system. ORNL subsequentlyevaluated and pilot tested the data acquisition system using the validation plan. The plan wasimplemented in full at the NHTSA East Liberty, OH test facility, and was carried out as acooperative effort with the Vehicle Research and Test Center staff.ORNL determined the reliability of the sensors and systems by exercising DASCAR For onevehicle type, ORNL evaluated systems reliability over a continuous period of 30 days withparticular attention paid to maintenance of calibration and data integrity. |