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Vehicle location system

  • US 4,891,650 A
  • Filed: 05/16/1988
  • Issued: 01/02/1990
  • Est. Priority Date: 05/16/1988
  • Status: Expired due to Fees
First Claim
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1. A system for determining a location of at least one selected vehicle from which a signal such as an alarm signal is generated:

  • a fixed array of a plurality of individual wireless signal detecting means, each of said individual wireless signal detecting means for receiving an input alarm signal having a strength which is a function of the distance between the position of the selected vehicle generating said alarm signal and the position of each of said individual one of said plurality of wireless signal detecting means;

    each of said individual wireless signal detecting means of said array including a wireless signal generating means for transmitting an output signal which is a function of the strength of said input alarm signal;

    a main wireless signal detecting means for receiving an output signal from each of said individual wireless signal generating means; and

    a control monitoring means, coupled to said main wireless signal detecting means, for receiving output signal there from, each of said output signals which is a function of the strength of said received input alarm signal, for calculating the approximate location of said selected vehicle from which an alarm signal is generated and for continuously recalculating the approximate location of said selected vehicle as its location changes.

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