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公开(公告)号：US10962418B1
公开(公告)日：2021-03-30
申请号：US16726256
申请日：2019-12-24
Applicant: Industrial Technology Research Institute
Inventor： Chien-Wen Chen
Abstract: A measuring device including a light source emitting a light beam, a first beam splitter disposed on a light path of the light beam, an optical grating, a reflector, and a sensor is provided. The light beam is divided into first and second light beams by the first beam splitter. The optical grating is disposed on light paths of the first and second light beams. The first beam splitter enables the first light beam to be delivered to the optical grating. The reflector is disposed on the light path of the second light beam. The first beam splitter enables the second light beam to be delivered to the reflector and reflected to the optical grating. The first and second light beams are diffracted by the optical grating to generate multiple first and second diffraction light beams at different angles respectively, which are received by the sensor after interference.
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公开(公告)号：US10742183B2
公开(公告)日：2020-08-11
申请号：US16229403
申请日：2018-12-21
Applicant: Industrial Technology Research Institute
Inventor： Chien-Wen Chen , Chih-Cheng Hsieh , You-Shin Chen
Abstract: A processing device for position sensing includes a plurality of light sensors, a signal processing unit, a current mirror unit and a transforming unit. The light sensors are spaced apart from each other and sense a light field to generate a plurality of position sensing current signals. The signal processing unit receives the position sensing current signals and provides a load isolation, so as to generate a first current signal and a second current signal. The second current signal is transmitted to a node. The first and second current signals respectively correspond to a first group and a second group of light sensors. The current mirror unit mirrors the first current signal to a third current signal. The third current is transmitted to the node. The transforming unit transforms a differential current signal formed by the second and third current signals on the node to a voltage signal.
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Patent Agency Ranking
公开(公告)号：US10352690B2
公开(公告)日：2019-07-16
申请号：US15845976
申请日：2017-12-18
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chien-Wen Chen , Mao-Sheng Huang
Abstract: A measuring apparatus for measuring surface topography of the slides to be measured of a guide rail is provided. The measuring apparatus includes a plurality of detecting probe and at least one moving device. The detecting probes are mounted on a probe support according to the surface topography of the slides to be measured. The moving device shifts the probe support or the slides to be measured on the cross section of the guide rail so that the detecting probe has a displacement relative to the slides to be measured. Each of the detecting probes has a corresponding coordinate system, and the corresponding coordinate system is different from each other. A standard part is utilized to correct deviations among the corresponding coordinate systems to the same coordinate system, and then the same coordinate system as a benchmark to measure the surface topography of the slides to be measured.
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公开(公告)号：US20170317761A1
公开(公告)日：2017-11-02
申请号：US15395843
申请日：2016-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chien-Wen Chen , Yung-Chang Chen , Huan-Chi Huang
CPC classification number: H04B10/60 , G01D5/34746 , G01D5/34792 , G02B5/1861 , H04L7/0075 , H04L7/0079
Abstract: A decoding device for an absolute positioning code is provided. The decoding device includes a linear feedback shift register (LFSR), a lookup table (LUT) circuit, a counter circuit, and a computation circuit. The LFSR includes n registers, for loading the absolute positioning code with a first frequency. The LFSR performs shifting operation according to a clock signal having a second frequency greater than or equal to the first frequency. The LUT circuit outputs a lookup result and a valid flag according to values stored in the n registers. The lookup result has k different data, k≦(2n−1). The counter circuit resets according to the valid flag, and performs counting operation according to the clock signal to generate a counting result. The computation circuit performs calculation according to the lookup result and the counting result to generate a decoding result when the valid flag indicates valid.
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公开(公告)号：US20170314972A1
公开(公告)日：2017-11-02
申请号：US15395344
申请日：2016-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chien-Wen Chen , Fu-Cheng Yang , Pei-Wen Yen , Shu-Ping Dong
CPC classification number: H04B10/60 , G01D5/34746 , G01D5/34792 , G02B5/1861 , H04L7/0075 , H04L7/0079
Abstract: A positioning measurement device is provided. The device includes a light source, a grating, and plural light sensors. A periodic light field is generated by light emitted by the light source and passes through the grating to. The plural light sensors are periodically spaced. The light sensors are used to sense the periodic light field for generating a plurality of positioning measurement signals.
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公开(公告)号：US10243668B2
公开(公告)日：2019-03-26
申请号：US15395344
申请日：2016-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chien-Wen Chen , Fu-Cheng Yang , Pei-Wen Yen , Shu-Ping Dong
Abstract: A positioning measurement device is provided. The device includes a light source, a grating, and plural light sensors. A periodic light field is generated by light emitted by the light source and passes through the grating to. The plural light sensors are periodically spaced. The light sensors are used to sense the periodic light field for generating a plurality of positioning measurement signals.
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公开(公告)号：US09871595B2
公开(公告)日：2018-01-16
申请号：US15395843
申请日：2016-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Chien-Wen Chen , Yung-Chang Chen , Huan-Chi Huang
CPC classification number: H04B10/60 , G01D5/34746 , G01D5/34792 , G02B5/1861 , H04L7/0075 , H04L7/0079
Abstract: A decoding device for an absolute positioning code is provided. The decoding device includes a linear feedback shift register (LFSR), a lookup table (LUT) circuit, a counter circuit, and a computation circuit. The LFSR includes n registers, for loading the absolute positioning code with a first frequency. The LFSR performs shifting operation according to a clock signal having a second frequency greater than or equal to the first frequency. The LUT circuit outputs a lookup result and a valid flag according to values stored in the n registers. The lookup result has k different data, k≦(2n−1). The counter circuit resets according to the valid flag, and performs counting operation according to the clock signal to generate a counting result. The computation circuit performs calculation according to the lookup result and the counting result to generate a decoding result when the valid flag indicates valid.
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