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Vehicle information and safety control system
| Details |
Inventors: Caci, Joseph Claude;
Assignee: Lockheed Martin Corporation (Owego, NY)
Primary Examiner: Nguyen; Lee
Assistant Examiner: Nguyen; Simon
Attorney, Agent or Firm: Meise; W. H., Cogan; R. P.
A Vehicle Information and Safety System (VISC) includes a main computer at a vehicle fleet headquarters (HQ) with access over a CDPD data network to a computerized sensor system mounted in each vehicle of the fleet. Sensors which may be used include load sensors coupled to the axles, accelerometers and temperature sensors coupled to the cargo bay, infrared andor pressure sensors monitoring the operator, cameras viewing the cargo bay, cab andor environment, and GPS data. The sensor data are processed by in-vehicle andor HQ computers, to monitor the state of the vehicle and operator, and the security status of the vehicle. PSAP (911) calls can be transmitted from the vehicle under remote control from the HQ for those cases in which the operator is unavailable or unresponsive, and the transmission can be tagged with GPS data. Speech signals from the operator are converted to text, and may be used for control of various functions, or may be data-compressed for transmission over the data network to HQ. Commands such as route or schedule changes may be transmitted as data text to the vehicle, where the data is converted to synthetic speech. Pick-ups and deliveries are logged by any one or all of operator voice, barricades, camera notes, digitized signatures, GPS and time data. A circuit-switched cellular radio is provided for use when the CDPD network is unavailable. |
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DETAILED DESCRIPTION What is claimed is: 1.
A communication system for a vehicle, comprising: a switched-circuit cellular radio communication transceiver located in said vehicle; a first CDPD network data transceiver located in said vehicle; a second network data connection means located at a site remote from said vehicle, and communicating with said first CDPD transceiver by way of said network; a speech-to-signal converter; a vocoder transmitter coupled to said speech-to-signal converter and to said second network data transceiver, for reducing the data rate of uncompressed speech signals coupled from said speech-to-signal converter to said second network data transceiver, whereby the reduced-data-rate speech signals are generated at the output of said first CDPD network data transceiver; a vocoder receiver coupled to said output of said first CDPD network data transceiver, for generating uncompressed signals which represent a synthesized version of said uncompressed speech signals; control means coupled to said first CDPD network data transceiver and to said switched-circuit cellular radio communication transceiver, for responding to commands transmitted over said second network data transceiver by enabling said switched-circuit cellular radio communication transceiver for dialing a particular telephone number, and for coupling said uncompressed signals to said vocoder receiver to said switched-circuit cellular radio communication transceiver, whereby speech signals from said speech-to-signal converter are compressed, transmitted over said CDPD network to said vehicle, uncompressed, and retransmitted over said circuit-switched cellular radio transceiver to be received by the accessed number.
2.
A system according to claim 1, wherein said second network data transceiver comprises a LAN connected to a port of said network.
3.
A communications system according to claim 1, wherein said particular telephone number is 911.
4.
A communications system according to claim 1, wherein said vehicle further comprises: a GPS receiver for generating signals representing the location of said vehicle signal-to-speech conversion means coupled to said GPS receiver and to said circuit-switched cellular radio transmitter, for automatically converting said signals representing the location of said vehicle into speech signals having like import
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Navigation and GPS 
