Cable tension measuring apparatus

Details Cable tension measuring apparatus Cable tension measuring apparatus

1978-03-03

1979-06-26

Ruehl, Charles A.

Measuring and testing

Volumetric content measuring

73DIG1, G01L 510

Patent

active

041589629

ABSTRACT:
A method and apparatus is provided for measuring tension in stressed cables in which use is made of the relationship between the tension and the natural frequency of vibration of the cable. An electrical signal is generated by sensing the fluctuating field of a small permanent magnet attached to the vibrating cable and generating from this signal a periodic pulse signal having an average level proportional to the square of the cable variation frequency. The resulting signal is scaled to produce a final signal which is directly proportional to cable tension.

REFERENCES:
patent: 2618970 (1952-11-01), Hitchcock et al.
patent: 3394587 (1968-07-01), Freeman
patent: 3540271 (1970-11-01), Hoff
patent: 3854329 (1974-12-01), Jones
patent: 3871217 (1975-03-01), Miley
patent: 3942369 (1976-03-01), Ruggenstein et al.
patent: 3958459 (1976-05-01), Shimomura

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