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    SENSOR CIRCUIT INTEGRATING STANDARD CMOS SENSORS WITH ENERGY EFFICIENCY AND SENSOR APPARATUS HAVING SAME
    971.
    发明申请
    SENSOR CIRCUIT INTEGRATING STANDARD CMOS SENSORS WITH ENERGY EFFICIENCY AND SENSOR APPARATUS HAVING SAME 有权

    公开(公告)号：US20220120628A1

    公开(公告)日：2022-04-21

    申请号：US17434560

    申请日：2019-06-12

    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Seong Hwan CHO ,  Su Jin PARK

    IPC: G01L9/12 ,  G01P15/125 ,  G01N27/22

    Abstract: Disclosed are an environment information sensor circuit and an environment information measurement device which can sense various kinds of environment information, such as pressure, humidity, acceleration and the like, and simply reduce quantization noise by employing a dual quantization capacitance-to-digital converter structure. The environment information sensor circuit comprises: a switch capacitor that outputs one among pressure information, humidity information, and acceleration information on the basis of a first clock signal and a second clock signal that do not overlap; a single-bit first order delta-sigma converter that includes an integrator which integrates the output from the switch capacitor and outputs the integrated output as an analog value, and a single-bit quantizer which compares the output from the integrator and a preset threshold voltage and outputs a single-bit digital signal corresponding to a comparison result; and a multi-bit quantizer that is connected to an output end of the integrator via a sampling switch, and quantizes the output from the integrator at the moment the sampling switch is turned on according to a sampling signal.

    Method and system for updating occupancy map for a robotic system
    975.
    发明授权
    Method and system for updating occupancy map for a robotic system 有权

    公开(公告)号：US11300964B2

    公开(公告)日：2022-04-12

    申请号：US15817421

    申请日：2017-11-20

    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Sung-Eui Yoon ,  Youngsun Kwon ,  Donghyuk Kim

    IPC: G01S17/89 ,  B25J9/16 ,  G01S7/48 ,  G05D1/02

    Abstract: A method and system for updates an occupancy map based on a first ray determined from a plurality of rays, as known as a super ray. The method of updating an occupancy map based on grids and octrees includes the step of generating a mapping line based on point clouds obtained from a sensor, determining a super ray by identifying a cell belonging to a plurality of cells forming the occupancy map and traversing an identical cell based on the generated mapping line, and updating the occupancy map by updating a cell through which the super ray corresponding to some of rays related to the plurality of cells forming the occupancy map passes.

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