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    • 2. 发明专利
    • Geomagnetism detector
    • 地磁探测器
    • JP2011185861A
    • 2011-09-22
    • JP2010053495
    • 2010-03-10
    • Alps Electric Co Ltdアルプス電気株式会社
    • YAMADA YUKIMITSUHIROBE KIYO
    • G01C19/36
    • PROBLEM TO BE SOLVED: To provide a geomagnetism detector for highly accurately calculating a rotating position and angular velocity with noises removed by using a triaxial sensor for detecting geomagnetism. SOLUTION: A coordinate point of a geomagnetism vector is computed based on detection outputs from three magnetic sensors for detecting the geomagnetic vector. If next coordinate point data D3 are contained in an area A1 of a radius r1 centering on an extension L1, the area A1 containing coordinate point data D1 and D2 computed, the data are extracted as normal coordinate point data while coordinate point data falling outside the area A1 are ignored as noise. By using a plurality of sets of normal coordinate point data, a locus circle along which coordinate point data move is found to determine the motion of the geomagnetic detector. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于通过使用用于检测地磁的三轴传感器去除噪声来高精度地计算旋转位置和角速度的地磁检测器。 解决方案:根据用于检测地磁矢量的三个磁传感器的检测输出,计算地磁矢量的坐标点。 如果下一个坐标点数据D3包含在以延伸L1为中心的半径r1的区域A1中,则包含计算的坐标点数据D1和D2的区域A1,将数据作为正常坐标点数据提取,同时坐标点数据落在 区域A1被忽略为噪声。 通过使用多组正常坐标点数据,找到坐标点数据移动的轨迹圆以确定地磁检测器的运动。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • GYRO DEVICE
    • JPS5837510A
    • 1983-03-04
    • JP13532981
    • 1981-08-28
    • TOKYO KEIKI KK
    • HOUJIYOU TAKESHIKAWADA SHINICHI
    • G01C19/00G01C19/36
    • PURPOSE:To automatically compensate the long variation of the drift of a gyro by using a drift compensating circuit. CONSTITUTION:The turning angular speed of a navigating body is detected and outputted by a rate gyro 101 and, simultaneously, a gyro-drift is mixed in said output. After removing an error component from the detected output through a drift compensating circuit 102, the output is inputted to a servo amplifier 103. The rotation of a servomotor 104 is transmitted to an azimuth card 109 to rotate the azimuth card 109 and the azimuth of the navigating body is read out by a pointer fixed on the azimuth card 109. Since the output of a control transformer 110 is proportional to the difference between the azimuth of the card and that of terrestrial magnetism, the output is fed back to the servo amplifier 103 through a counter 112. By said loop, the servomotor 104 continues to rotate until the card azimuth coincides with the terrestrial magnetism azimuths.