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APPARATUS FOR DETERMINING THE CENTER OF GRAVITY OF PASSENGERS IN A VEHICLE, NAMELY AN AIRCRAFT

  • US 3,746,844 A
  • Filed: 10/13/1971
  • Issued: 07/17/1973
  • Est. Priority Date: 10/22/1970
  • Status: Expired due to Term
First Claim
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1. An apparatus for determining the instantaneous position of the center of gravity of passengers sitting at random in aligned rows of seats in an elongated vehicle, namely an aircraft, comprising a clock oscillator supplying recurrent pulses;

  • at least one pulse counter of definite capacity receiving said pulses and comprising a cascade of flip-flops acting as binary dividers;

    a number of coincidence circuits corresponding to the number of rows, each connected in a definite arrangement to some of said binary dividers for defining a sharing interval of a cycle of pulses corresponding to the counter capacity with each sharing interval corresponding to one row and comprising a number of pulses at least slightly greater than the number of seats of the row multiplied by the number of said rows;

    divider means relating to said number of said rows with one connected to the output of each of said coincidence circuits for producing enlarged pulses having the duration of an elementary pulse multiplied by said latter number;

    a number of shift registers each including a number of stages corresponding to the number of seats in a row with one connected to the output of said divider means foR registering a possible number of enlarged pulses corresponding to the number of seats in the corresponding row;

    a detector of each occupied seat connected to one stage of one of said shift registers for allowing registration in said stage of one enlarged pulse only when the seat is actually occupied;

    first integrator means connected to all said shift registers for summing all the enlarged pulses;

    a pulse generator also connected to all said shift registers for generating a pulse of even duration for each enlarged pulse;

    second integrator means for summing said even duration pulses; and

    analogue divider means for dividing the signal output from said first integrator by the signal output from said second integrator.

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