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    • 8. 发明授权
    • Load sensor with use of crystal resonator
    • 使用晶体谐振器的负载传感器
    • US06880407B2
    • 2005-04-19
    • US10163858
    • 2002-06-05
    • Masami YamanakaMotoyuki AdachiAkio ChibaKozo Ono
    • Masami YamanakaMotoyuki AdachiAkio ChibaKozo Ono
    • G01G3/16G01G3/13G01L1/10H01L41/08H01L41/18G01B7/16H01L41/04
    • G01G3/13
    • Excitation electrodes are respectively affixed to central portions of both surfaces of a long plate-shaped AT-cut crystal resonator, the central portion starts a thickness shear oscillation in the length direction of the crystal resonator when an electric signal is applied to the central portion of the crystal resonator through the excitation electrodes. And, channel-shaped, half-circular-shaped, or trapezoid grooves in cross-section are respectively formed in the plate width direction on middle portions between the center portion and end portions of the crystal resonator. These grooves are formed so as to be symmetrical with respect to a thicknesswise central position of the crystal resonator through a well-known etching technique such as photo-etching and the like.
    • 励磁电极分别固定在长板状AT切割晶体谐振器的两个表面的中心部分,当电信号施加到晶体谐振器的中心部分时,中心部分在晶体谐振器的长度方向上开始厚度剪切振荡 晶体谐振器通过激发电极。 并且,在晶体谐振器的中心部分和端部之间的中间部分上分别在板宽度方向上形成横截面的通道形状,半圆形或梯形槽。 这些槽通过公知的蚀刻技术如光蚀刻等形成为相对于晶体谐振器的厚度方向中心位置对称。
    • 9. 发明授权
    • Gray code reader
    • 格雷码阅读器
    • US4173752A
    • 1979-11-06
    • US889910
    • 1978-03-24
    • Masami Yamanaka
    • Masami Yamanaka
    • G01G23/44H03M1/00G06F11/10H03K13/34
    • G01G23/44H03M1/285
    • An analog to digital convertor for converting mechanical motion to an electric digital signal which includes a code plate carrying gray codes for measuring displacement, codes for parity bits and parity check control bits and gray code reading means and decoder therefore wherein the parity bits detect the occurrence of a readout error and producing a warning signal while the parity check control bits detect an incorrect parity check caused by errors in the sensing operation such as dirt, dust, or damaged sensing elements, and produces a second warning signal, a memory for temporarily storing the output of the decoder and circuitry inter-connected with the memory and decoder to produce a third warning signal when the difference between the outputs of the memory and the decoder is greater than a predetermined value, circuitry for producing a first error signal when only the second warning signal is present and a second error signal when at least the first and third warning signals are present.
    • 一种用于将机械运动转换为电数字信号的模拟数字转换器,其包括承载用于测量位移的灰度代码,用于奇偶校验位和奇偶校验控制位的代码的代码板以及灰度代码读取装置和解码器,因此奇偶校验位检测到发生 的读出错误并产生警告信号,同时奇偶校验控制位检测由诸如灰尘,灰尘或损坏的感测元件的感测操作中的错误引起的不正确奇偶校验,并产生第二警告信号,用于临时存储的存储器 当存储器和解码器的输出之间的差大于预定值时,解码器和电路与存储器和解码器相互连接以产生第三警告信号的输出,用于当仅存在第一错误信号时产生第一错误信号的电路 当至少第一和第三警告信号为pr时,存在第二警告信号和第二错误信号 事情