Optically Probed Multi-Element Electric Field Sensing System

    公开(公告)号:US20190072599A1

    公开(公告)日:2019-03-07

    申请号:US15694739

    申请日:2017-09-01

    Abstract: A system and a method for determining local electric field strengths, the system including: a light source module configured to emit light; a plurality of electric field sensors, each sensor including a light input portion and a light output portion, each sensor including an electro-optic material arranged in a path of at least some of the received light, an optical property of the electro-optic material being variable depending on a local electric field strength at the sensor, and the electro-optic material being arranged in the sensor such that a property of the output light varies depending on the local electric field strength; a light detection module arranged to receive the output light from the sensors; and a processing module in communication with the light detection module, the processing module being programmed to determine a corresponding value for the electric field strength local to each of the sensors.

    DROP-OFF LOCATION PLANNING FOR DELIVERY VEHICLE

    公开(公告)号:US20220357753A1

    公开(公告)日:2022-11-10

    申请号:US17825295

    申请日:2022-05-26

    Abstract: An example method may include receiving, from a client computing device, an indication of a target drop-off spot for an object within a first virtual model of a first region of a delivery destination. A second virtual model of a second region of the delivery destination may be determined based on sensor data received from one or more sensors on a delivery vehicle. A mapping may be determined between physical features represented in the first virtual model and physical features represented in the second virtual model to determine an overlapping region between the first and second virtual models. A position of the target drop-off spot within the second virtual model may be determined based on the overlapping region. Based on the position of the target drop-off spot within the second virtual model, the delivery vehicle may be navigated to the target drop-off spot to drop off the object.

    Modular vehicles with detachable pods

    公开(公告)号:US11454985B1

    公开(公告)日:2022-09-27

    申请号:US16751414

    申请日:2020-01-24

    Abstract: The subject matter of this specification generally relates to modular vehicles including separable pod and base units. In some implementations, a computing system installed in a vehicle base identifies a vehicle pod that is detachably connected to a chassis on the vehicle base. In response to identifying that the vehicle pod is detachably connected to the chassis on the vehicle base, a communications link can be established between the computing system installed in the vehicle base and a computing system installed in the vehicle pod. Based on information obtained through the communications link, the computing system installed in the vehicle base can determine a particular configuration of the vehicle pod that is detachably connected to the chassis. The computing system can then verify that the vehicle base can safely transport the vehicle pod while the vehicle pod is detachably connected.

    HARDNESS TESTING SYSTEMS AND RELATED METHODS
    17.
    发明申请

    公开(公告)号:US20200056970A1

    公开(公告)日:2020-02-20

    申请号:US16103147

    申请日:2018-08-14

    Abstract: An apparatus includes a holder to support an indenter relative to a sample of material, a depth sensor, and a controller to execute instructions for performing operations. The operations include controlling the holder to apply a first force on the sample with the indenter and determining a first depth of the indenter based on first data generated by the depth sensor, controlling the holder to move the indenter from the first depth to a predetermined depth greater than the first depth, after the indenter is moved to the predetermined depth, controlling the holder to apply the first force on the sample with the indenter and determining a second depth of the indenter based on second data generated by the depth sensor, and determining a value indicative of hardness of the sample based on a difference between the first depth and the second depth.

    Modelocked laser electric field sensor

    公开(公告)号:US10557880B2

    公开(公告)日:2020-02-11

    申请号:US15694743

    申请日:2017-09-01

    Abstract: An electro-optic (EO) sensor and a method for detecting a local electric field strength, the EO sensor including: a first optical cavity; a gain medium within the first optical cavity; a mode locking element within the first optical cavity; and an EO material within the first optical cavity, an effective optical path length of the EO material being variable depending on the local electric field strength at the EO sensor, wherein the gain medium, the mode locking element, and the EO material are arranged in a common path of light within the first optical cavity, and wherein during operation, the EO sensor emits pulses of light at a repetition rate characteristic of an effective optical path length of the light within the first optical cavity, the effective optical path length varying depending on the electric field strength local to the EO sensor.

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