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1. 发明授权

US06555809B2 Incremental rotary encoder 失效
公开(公告)号：US06555809B2
公开(公告)日：2003-04-29
申请号：US10105354
申请日：2002-03-26
申请人： Katsuhiko Kenjo , Masami Shirai
发明人： Katsuhiko Kenjo , Masami Shirai
IPC分类号： G01D534
CPC分类号： H03M1/308
摘要： An incremental rotary encoder having first and second sensors which each output two sine wave signals having a phase difference of 90 degrees while a rotary member of the incremental rotary encoder rotates. The incremental rotary encoder includes an absolute-zero-index detecting device, provided for the first sensor; at least one binary coding circuit which codes each of the two sine wave signals and the zero index signal into a corresponding binary signal; a holding device for holding the level data of the binary signal of each sine wave signal output from the second sensor when the absolute-zero-index detecting device outputs the zero index signal; and a controller for determining whether the phase of the two sine wave signals output from the second sensor advances or delays with respect to the phase of the two sine wave signals output from the first sensor.

2. 发明授权

US06304079B1 Incremental rotary encoder for measuring horizontal or vertical angles 失效
标题翻译：用于测量水平或垂直角度的增量旋转编码器
公开(公告)号：US06304079B1
公开(公告)日：2001-10-16
申请号：US09559758
申请日：2000-04-27
申请人： Katsuhiko Kenjo , Masami Shirai
发明人： Katsuhiko Kenjo , Masami Shirai
IPC分类号： G01B730
CPC分类号： G01D5/145 , G01D5/24409 , H03M1/306
摘要： An incremental rotary encoder outputs two sine wave signals having a phase difference of 90 degrees when the incremental rotary encoder is in operation, the incremental rotary encoder including a binary coding circuit which codes each of the two sine wave signals into a binary signal, a voltage detector which detects the voltage of one of the two sine wave signals at the moment of variation in a signal level of the binary signal, and a controller which includes a calculator which takes an even number of voltage values from each of the two sine wave signals to take an average of the even number of voltage values for each of the two sine wave signals.
摘要翻译：当增量式旋转编码器运行时，增量旋转编码器输出具有90度相位差的两个正弦波信号，增量式旋转编码器包括将两个正弦波信号中的每一个代入二进制信号的二进制编码电路，检测器，其在二进制信号的信号电平的变化时检测两个正弦波信号中的一个的电压，以及控制器，其包括从两个正弦波信号中的每一个获取偶数个电压值的计算器以平均获得两个正弦波信号中的每一个的偶数个电压值。

3. 发明授权

US06629371B1 Surveying instrument incorporating a magnetic incremental rotary encoder 失效
标题翻译：包含磁力增量式旋转编码器的测量仪器
公开(公告)号：US06629371B1
公开(公告)日：2003-10-07
申请号：US09692614
申请日：2000-10-20
申请人： Masami Shirai , Katsuhiko Kenjo
发明人： Masami Shirai , Katsuhiko Kenjo
IPC分类号： G01C1500
CPC分类号： G01C1/02 , G01D5/2451
摘要： A surveying instrument which incorporates a magnetic incremental rotary encoder includes a rotary magnetic drum provided on an outer peripheral surface thereof with a multi-pole magnetized layer having a plurality of equally-divided magnetized divisions, a pair of magnetic sensors located on opposite sides of said rotary magnetic drum so that each of said pair of magnetic sensors faces said multi-pole magnetized layer, and at least one magnet, positioned in the vicinity of at least one of said pair of magnetic sensors, for reducing an error in detection of said magnetic incremental rotary encoder.
摘要翻译：包括磁增量旋转编码器的测量仪器包括：旋转磁鼓，其在其外周表面上设置有具有多个等分磁化部分的多极磁化层，位于所述多个等分磁化部分的相对侧上的一对磁传感器旋转磁鼓，使得所述一对磁传感器中的每一个面对所述多极磁化层，以及位于所述一对磁传感器中的至少一个的附近的至少一个磁体，用于减少所述磁极的检测中的误差增量旋转编码器。

4. 发明授权

US06550150B1 Surveying instrument incorporating a magnetic incremental rotary encoder 失效
标题翻译：包含磁力增量式旋转编码器的测量仪器
公开(公告)号：US06550150B1
公开(公告)日：2003-04-22
申请号：US09692616
申请日：2000-10-20
申请人： Masami Shirai , Katsuhiko Kenjo
发明人： Masami Shirai , Katsuhiko Kenjo
IPC分类号： G01C1500
CPC分类号： G01D5/145 , G01C1/02 , G01D5/249
摘要： A surveying instrument which incorporates a magnetic incremental rotary encoder includes a rotary magnetic drum provided on an outer peripheral surface thereof with a multi-pole magnetized layer having a plurality of equally-divided magnetized divisions; and at least two magnetic sensors, each of which detects a magnetic field generated by the multi-pole magnetized layer therefrom. Each of the at least two magnetic sensors detects a variation in the magnetic field due to a rotation of the rotary magnetic drum to measure an angle of rotation of the rotary magnetic drum, and the at least two magnetic sensors are arranged so that two of the at least two magnetic sensors are offset from each other to have a phase angle of an odd-numbered pitch angle therebetween.
摘要翻译：包括磁增量旋转编码器的测量仪器包括在其外周表面上设置有具有多个等分磁化分段的多极磁化层的旋转磁鼓; 以及至少两个磁传感器，每个磁传感器检测由多极磁化层产生的磁场。所述至少两个磁传感器中的每一个检测由于所述旋转磁鼓的旋转而导致的磁场变化，以测量所述旋转磁鼓的旋转角度，并且所述至少两个磁传感器被布置成使得至少两个磁性传感器彼此偏移以具有其间的奇数间距角的相位角。

5. 发明授权

US06622391B1 Incremental rotary encoder, and a surveying instrument incorporating a magnetic incremental rotary encoder 失效
标题翻译：增量旋转编码器，以及包含磁力增量式旋转编码器的测量仪器
公开(公告)号：US06622391B1
公开(公告)日：2003-09-23
申请号：US09559741
申请日：2000-04-27
申请人： Masami Shirai , Masato Noguchi , Katsuhiko Kenjo
发明人： Masami Shirai , Masato Noguchi , Katsuhiko Kenjo
IPC分类号： G01B730
CPC分类号： G01C1/02 , H03M1/301
摘要： An incremental rotary encoder includes a rotary portion, a first sensor and a second sensor, the first and second sensors being arranged so as to be opposite from each other with respect to the axis of the rotary portion. The second sensor is offset from the first sensor so that the phase of output voltage of the second sensor advances or delays with respect to the phase of output voltage of the first sensor by &pgr;/X, wherein “X” represents a real number of one or more than one.
摘要翻译：增量式旋转编码器包括旋转部分，第一传感器和第二传感器，第一和第二传感器被布置为相对于旋转部分的轴线彼此相对。第二传感器偏离第一传感器，使得第二传感器的输出电压的相位相对于第一传感器的输出电压的相位相对于π/ X而进行或延迟，其中“X”表示实数或多于一个。

6. 发明授权

US06384405B1 Incremental rotary encoder 失效
公开(公告)号：US06384405B1
公开(公告)日：2002-05-07
申请号：US09559083
申请日：2000-04-27
申请人： Katsuhiko Kenjo , Masami Shirai
发明人： Katsuhiko Kenjo , Masami Shirai
IPC分类号： G01D534
CPC分类号： H03M1/308
摘要： An incremental rotary encoder having first and second sensors which each output two sine wave signals having a phase difference of 90 degrees while a rotary member of the incremental rotary encoder rotates. The incremental rotary encoder includes an absolute-zero-index detecting device, provided for the first sensor; at least one binary coding circuit which codes each of the two sine wave signals and the zero index signal into a corresponding binary signal; a holding device for holding the level data of the binary signal of each sine wave signal output from the second sensor when the absolute-zero-index detecting device outputs the zero index signal; and a controller for determining whether the phase of the two sine wave signals output from the second sensor advances or delays with respect to the phase of the two sine wave signals output from the first sensor.

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