There is provided a method of automatically supervising a transfer operation of a transfer device including an optical sensor, the optical sensor having a light emitting part and a light receiving part provided in a head of a holding part for holding a substrate, the method including: acquiring a change in intensity of a first reflected light reflected off a first object by radiating a light from the light emitting part toward the first object below the holding part and receiving the first reflected light reflected off the first object by the light receiving part, while horizontally moving the holding part; and specifying an end position of the first object based on the change in intensity of the first reflected light.

There is provided a method of automatically supervising a transfer operation of a transfer device including an optical sensor, the optical sensor having a light emitting part and a light receiving part provided in a head of a holding part for holding a substrate, the method including: acquiring a change in intensity of a first reflected light reflected off a first object by radiating a light from the light emitting part toward the first object below the holding part and receiving the first reflected light reflected off the first object by the light receiving part, while horizontally moving the holding part; and specifying an end position of the first object based on the change in intensity of the first reflected light.

An electronic watch includes a frame and a cover. The cover is attached to the frame, and the frame and cover at least partially define an interior volume of the electronic watch. An optical sensor assembly including a light emitter and a light receiver is positioned within the inter volume of the frame. An optical barrier is positioned between the optical sensor assembly and the cover and includes a magnetic material that forms a light blocking-wall between the light emitter and the light receiver. The magnetic material is configured to removably couple the electronic watch with a charging device via a magnetic attraction between the magnetic material and a magnetic component of the charging device.

An electronic watch includes a frame and a cover. The cover is attached to the frame, and the frame and cover at least partially define an interior volume of the electronic watch. An optical sensor assembly including a light emitter and a light receiver is positioned within the inter volume of the frame. An optical barrier is positioned between the optical sensor assembly and the cover and includes a magnetic material that forms a light blocking-wall between the light emitter and the light receiver. The magnetic material is configured to removably couple the electronic watch with a charging device via a magnetic attraction between the magnetic material and a magnetic component of the charging device.

Systems, devices, and methods for stopping the rotation of propellers used in unmanned aerial vehicles (UAV) such as drones are disclosed. The propellers are stopped in response to detecting when beams of light adjacent the propellers are blocked.

Systems, devices, and methods for stopping the rotation of propellers used in unmanned aerial vehicles (UAV) such as drones are disclosed. The propellers are stopped in response to detecting when beams of light adjacent the propellers are blocked.

A method and a system for measuring downhole fluid properties. The downhole fluid sampling tool may comprise at least one probe and at least one passageway that passes through the at least one probe and into the downhole sampling tool. The method may comprise drawing a wellbore fluid through the at least one probe and through the at least one passageway, obtaining a first channel measurement of the wellbore fluid, obtaining at least a second channel measurement, clustering channel data from a plurality of channel measurements comprising the first channel measurement and the at least second channel measurement, and measuring a phase through a plurality of channels. The method may further comprise separating a plurality of phase signals based on the phase measured through the plurality of channels, labeling the wellbore fluid, assigning the plurality of phase signals to specific phases of a multi-phase fluid, and estimating a fluid property.

A content passing device according to the present invention comprises: a passage operation part for guiding the movement of content; a passage movement part that is rotatably provided in the passage operation part and moves so that the content passes therethrough; and a detection unit that is provided in the passage operation part and detects the content discharged by the free rotational movement of one end of the passage movement part, wherein the detection unit detects information about the detected content. The passage operation part includes a duct-shaped passage portion that forms a movement path for discharging a fixed amount of the content, and a guide portion connected to the passage portion to guide the content, wherein the content moves along the guide portion and flows into the passage portion, and is then discharged to the outside through an opening at the upper end of the passage portion, the passage movement part includes an opening member that opens or closes the opening, a rotation shaft that is the center of the rotational movement, and a blocking member that is connected to the rotation shaft and rotates together with the opening member, the passage movement part forms one side wall of the passage portion, and the light reception part and the light emission part are arranged facing each other on respective side walls formed on the left and right sides of the one side wall.

A content passing device according to the present invention comprises: a passage operation part for guiding the movement of content; a passage movement part that is rotatably provided in the passage operation part and moves so that the content passes therethrough; and a detection unit that is provided in the passage operation part and detects the content discharged by the free rotational movement of one end of the passage movement part, wherein the detection unit detects information about the detected content. The passage operation part includes a duct-shaped passage portion that forms a movement path for discharging a fixed amount of the content, and a guide portion connected to the passage portion to guide the content, wherein the content moves along the guide portion and flows into the passage portion, and is then discharged to the outside through an opening at the upper end of the passage portion, the passage movement part includes an opening member that opens or closes the opening, a rotation shaft that is the center of the rotational movement, and a blocking member that is connected to the rotation shaft and rotates together with the opening member, the passage movement part forms one side wall of the passage portion, and the light reception part and the light emission part are arranged facing each other on respective side walls formed on the left and right sides of the one side wall.

When a medium detector detects that a state where a medium is absent is switched to a state where the medium is present with a light quantity of the medium detector set to a first light quantity, a controller in an image reading apparatus switches the light quantity from the first light quantity to a second light quantity, which is larger than the first light quantity. When a quantity of the light received by the medium detector exceeds a threshold, the controller determines whether the media overlaps each other, based on the detection result of the multi-feed detector. When the quantity of the light received does not exceed the threshold, the controller skips the determination of whether the media overlaps each other.