| 摘要 |
A strain sensitive coaxial cable is disclosed as comprising a centrally disposed conductor about which is disposed a first insulating layer, and a second conductor disposed coaxially about the center conductor, configured as a helix and dimensioned to loosely fit with respect to the first dielectric layer and to permit relative axial movement generally between the second conductor and the first dielectric layer, whereby more uniform signals, and elastic-inelastic strain discrimination are provided and spurious outputs eliminated. An outer protective sheath is disposed about the helical turns of the second conductor. Another form includes using spaced mechanical means such as collar members at spaced intervals frictionally affixed to both the dielectric layer around the center conductor and the second helical conductor to prevent movement of those frictionally engaged spaced portions of the second conductor with respect to the dielectric layer around the center conductor, thereby reducing the possibility of providing false or spurious outputs due to strain relief of the cable.
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