×

Rangeable speedometer/odometer

  • US 4,491,007 A
  • Filed: 12/02/1982
  • Issued: 01/01/1985
  • Est. Priority Date: 12/02/1982
  • Status: Expired due to Fees
First Claim
Patent Images

1. A rangeable speedometer receiving a pulse signal having a pulse rate corresponding to velocity to be measured, comprising:

  • pulse integrator means to produce an analog voltage output in a relationship to said pulse signal and including a selectable ranging network for changing the relationship of said pulse integrator output voltage to said pulse signal, said relationship including at least one of system nonlinearities, offsets, and distortions;

    a speedometer drive circuit providing a speedometer drive signal according to said pulse integrator output signal; and

    a speedometer indicator providing a visual representation according to said speedometer drive signal, wherein said ranging network includes a switch selectable network comprising a plurality of switched resistances of values in decrementing sequences, said switch selectable network being adjusted to approximate the desired ranging network according to at least one of said nonlinearities, signal distortions, and said relationship to provide accurate representation of the velocity to be measured.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×