发明名称 |
Two-dimensional position coordinate determination device with U-shaped delay line |
摘要 |
An automatic position coordinate determination device has a single U-shaped delay line made of magnetostrictive material. A grid network of electrical conductors including first and second pluralities of parallel conductors arranged substantially perpendicular to first and second coordinate axes respectively is inductively coupled to the delay line. A sensor coil is arranged at one end of the delay line for outputting a signal in response to the arrival of a propagating magnetostrictive strain wave induced by an energized electrical conductor. A movable flux-producing element is proximally arranged with respect to the grid network. When the flux-producing element is pulsed, at least one electrical conductor of each plurality is energized, which energized conductors in turn each induce a strain wave which propagates toward the sensor. The propagation times of the induced strain waves are processed to determine the position coordinates of the pulsed flux-producing element.
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申请公布号 |
US4689448(A) |
申请公布日期 |
1987.08.25 |
申请号 |
US19850764835 |
申请日期 |
1985.08.09 |
申请人 |
SUMMAGRAPHICS CORPORATION |
发明人 |
SNYDER, EDWARD J.;BARBETTI, JAMIE L. |
分类号 |
G06F3/041;G01B7/00;G01D5/48;G06F3/033;G06F3/043;G06F3/046;(IPC1-7):G08C21/00;G01B7/14 |
主分类号 |
G06F3/041 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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