Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering
Patent
1981-07-13
1983-06-14
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Underwater system
Telemetering
367 6, 367106, 405166, 405168, H04B 1100, H02G 110
Patent
active
043887104
ABSTRACT:
Apparatus for monitoring cable tension during submarine laying operations is housed in a separable case suitable for nondestructive attachment around the circumference of a cable at any desired location prior to laying. A strain gauge within the housing is positioned in a saddle across which the cable is placed in a bowed state. The electrical output from the strain gauge, which is proportional to tension in the cable, is translated into an acoustical signal transmissible through a submarine environment. The underwater sound can be picked up by the laying vessel or an assist vessel and displayed in real time. A plurality of tension monitors can be interrogated in sequence or at random under the control of transponder signals from the vessel. The monitor is self-powered and requires no metallic electrical connection to the cable or to the laying vessel.
REFERENCES:
patent: 3512125 (1970-05-01), Raymond
patent: 4120167 (1978-10-01), Denman et al.
Bell Telephone Laboratories Incorporated
Farley Richard A.
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