Abstract: A phase difference measuring method uses an atomic wave interferometer that separates an atomic wave by a first Raman beam, reflects the atomic wave by a second Raman beam, and separates again the atomic wave by a third Raman beam to make the atomic wave interfere. The method applies to the second Raman beam an offset phase and an oscillation phase having an amplitude ? and an angular frequency ? to modulate a phase of the atomic wave. A number-of-atoms measuring apparatus measures an intensity signal I of an interfered atomic wave. An observed phase difference ? is calculated from a ? component and a 2? component of the intensity signal I and the amplitude ?. The offset phase is subtracted from the observed phase difference ? to calculate a measured phase difference. Feedback control is conducted for the offset phase such that cos ?=?1.

Abstract: A vehicle bumper beam includes: a first panel extending in a vehicle width direction and defining a receiving surface of a collision load of the vehicle; a second panel extending in the vehicle width direction and facing the first panel in a front-rear direction of a vehicle body; third panels in a pair extending from an upper edge and a lower edge of the second panel in the front-rear direction of the vehicle body and coupled respectively to an upper edge and a lower edge of the first panel; and beads provided in the middle of one or more of the third panels in the vehicle width direction and extending from the first panel to the second panel. Extending ends of the beads are set at positions apart from a ridge line between the second panel and a corresponding one of the third panels on which the beads are provided.

Abstract: A terminal (300) is attached to a sensor sheet (100) using a tongue piece (131) that extends from the sensor sheet (100). This makes it possible to reduce a sense of discomfort in a subject caused by the presence of the terminal (300), and to realize a biological-information measurement device with which it is possible to mitigate a sense of discomfort in a subject caused by the device, to a greater extent than in a case in which, e.g., the entire reverse surface of the terminal (300) is secured to the sensor sheet (100).

Abstract: A valve includes: a casing ; a valve body that is operable inside the casing; a biasing member that biases the valve body; and a retainer that holds the biasing member, wherein the retainer is provided with a flange portion caulked and fixed to the casing by a caulking end provided at one axial end of the casing, and wherein an elastic member is sandwiched between the flange portion and the casing to be axially elastically deformable.

Abstract: A valve capable of maintaining a stable fixed state between a retainer and a casing for a long period of time and a method of assembling the valve are provided. A retainer includes a cylindrical portion which has a seat surface for a biasing member and an expanded diameter portion which expands radially outward in a tapered shape from one axial end of the cylindrical portion on a side of a casing, and a caulking end is locked to an outer peripheral portion of the expanded diameter portion while a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable.

Abstract: A detection system for a keyboard instrument includes a movable member that is displaceable in response to a user playing operation of the keyboard instrument. The detection system includes: (i) a detectable portion of a magnetic or conductive body that is disposed on the movable member; (ii) a detection board including: a detection coil disposed facing the detectable portion; and a detection circuit configured to generate a detection signal depending on a distance between the detection coil and the detectable portion; (iii) a control board, which is discrete from the detection board, including a control integrated circuit configured to generate, based on the detection signal, displacement data indicating a position of the movable member; and (iv) a transmitter configured to transmit the detection signal from the detection board to the control board.

Abstract: A leakage detection apparatus according to the present disclosure includes: at least one memory storing instructions; and at least one processor configured to execute the instructions to transmit pulsed light to an optical fiber laid in a pipe through which a fluid flows and receive backscattered light from the optical fiber, generate sound data indicating a state of the fluid flowing through the pipe, based on the backscattered light, and detect leakage of the fluid by analyzing the sound data.

Abstract: An underwater optical communication system 1 according to this invention includes a first optical communication device 10 arranged underwater; a second optical communication device 20 being provided to a moving body 3 for moving underwater, and performing bidirectional optical communication between the second optical communication device and the first optical communication device 10; and a control device 30 for presenting at least one of a recommended relative position 41 and an unrecommended relative position 42 of at least the second optical communication device 20 relative to the first optical communication device 10 in the optical communication based on disturbance light.

Abstract: A solenoid valve capable of stably controlling the flow rate or pressure of a fluid includes: a valve body; a valve seat on which the valve body is to be seated; a solenoid including a movable iron core, a rod, and a fixed iron core, and exerting a driving force on the valve body in a valve closing direction; a spring biasing the valve body in a valve opening direction; and a valve housing partially defining a valve chamber in which the valve body and the valve seat are disposed. A spring chamber in which the spring is disposed is formed between the valve chamber and the fixed iron core, and the valve body isolates the valve chamber and the spring chamber from each other when the valve is opened.

Abstract: An inertial sensor includes a dual atom interferometer. A moving standing light wave generation device in the dual atom interferometer generates M (3?M) moving standing light waves. Each of the M moving standing light waves is generated by a pair of counter-propagating laser beams. The moving standing light wave generation device adjusts two-photon detuning of a pair of counter-propagating laser beams corresponding to each of N (2?N<M) moving standing light waves out of the M moving standing light waves such that the difference between an interferometric phase corresponding to one atomic beam obtained by interfering with the M moving standing light waves and an interferometric phase corresponding to the other atomic beam obtained by interfering with the M moving standing light waves stays constant.

Abstract: A spool valve includes a sleeve having a plurality of ports, and a spool arranged inside the sleeve and having a land formed so as to be brought into sliding contact with inner walls of the sleeve. A depression is formed in the land over an entire circumference.

Abstract: Provided is a sensor sheet 100 comprising: a lower sheet 110 that is affixed to the skin of a subject; an upper sheet 120 that is affixed to the surface side of the lower sheet 110; and an electric circuit section 130 provided to an area corresponding to the upper sheet 120. A peripheral edge section 110a has a single-layer structure comprising only the lower sheet 110. A central area has a multilayer structure comprising the lower sheet 110 and the upper sheet 120. In this way, the ability to conform to the skin is enhanced in the peripheral edge section 110a of the sheet where itching is likely to occur, the electric circuit section 130 can be held firmly in the central area.

Abstract: Provided is a switching valve capable of maintaining a satisfactory contact state between a contact surface of a rotor and a seat surface of a stator in a rotation range of the rotor. A stator is provided with a plurality of inlet ports and outlet ports through which a working fluid passes, a rotor is provided with at least two through-holes and communication grooves which are able to selectively communicate between the inlet ports and the outlet ports, a casing is provided with a fluid inlet opening which communicates with each of the through-holes, and at least one of the through-holes always communicates with any of the outlet ports of in a rotation range of the rotor.

Abstract: An autonomous driving system connected communicably to a mobile device of a driver or to a mobile device case attached to the mobile device, and configured to perform autonomous driving control. the autonomous driving system comprises a display cover of the mobile device case, capable of switching a display of the mobile device between a visible state and a shielded state. The display of the mobile device is switched from the visible state to the shielded state by controlling the mobile device or the mobile device case, when the driver is requested to perform a driving operation of a vehicle during the autonomous driving control.

Abstract: A display device includes an image generation unit configured to generate a status image presented to a driver of the vehicle, the status image representing to a current status of the vehicle and surroundings of the vehicle; a map information acquisition unit configured to acquire the map information and recognize an acquisition status of the map information; a display mode setting unit configured to set a display mode; and a display control unit configured to display the status image on a display unit in the display mode. The acquisition status includes a first case, a second case, and a third case in which the map information is temporarily unavailable. The display mode setting unit sets the display mode so that the display mode of the first case, the second case and the third case are different from each other.

Abstract: A vehicle structure includes a sliding door operation device configured to move a sliding door on a side portion of a vehicle. The device includes a motor unit and a moving member operating mechanism portion including a belt or a wire-shaped moving member coupled to the sliding door and a driven rotary member that receives a rotational driving force from the motor unit. The motor unit and the driven rotary member are provided with a serration shaft portion and a serration hole that are fitted to each other. The vehicle structure further includes a rotation operation unit configured to rotate the motor unit about centers of the serration shaft portion and the serration hole when the motor unit is pushed toward the driven rotary member to fit the serration shaft portion and the serration hole to each other.

Abstract: A spool valve including a spool having a plurality of land portions; a sleeve having the spool housed such that the spool is movable in an axial direction and has an input port and an output port and small-diameter portions in the interior of the sleeve. The pressure and flow rate of a fluid passing between the land portions and the small-diameter portions are adjusted by movement of the spool; a plurality of adjustment portions formed as spaces between the small-diameter portions of the sleeve and the land portions of the spool overlapping with each other from a radial direction of the spool; and a guide portion constituted by the small-diameter portion and the land portion which define one of the adjustment portions having a cross-sectional area smaller than each of cross-sectional areas of adjacent two of the adjustment portions having the input port interposed therebetween in the axial direction.

Abstract: A front body structure provided on a vehicle includes a bumper beam, a left frame and a right frame in pairs, stays, and gussets. The bumper beam extends in a left-right direction at a front end of the vehicle. The frames extend in a front-rear direction. The stays support the bumper beam. The stays are provided at front ends of the frames. The gussets are disposed separated from the bumper beam. Each of the gussets extend inclined outward in the left-right direction, and obliquely forward from an outer end of a corresponding one of the left frame and the right frame to ahead of a front end of a corresponding one of the left frame and the right frame. Each of the stays includes a bead at a predetermined position in the front-rear direction. Each of the beads extends in a circumferential direction of the respective one of the stays.

Abstract: An optical communication device 1 is provided with: a plurality of light-receiving elements 11 each configured to receive light and output a light detection signal; a plurality of optical fibers 13 provided to correspond to the plurality of light-receiving elements 11, respectively, the plurality of optical fibers each being configured to guide the light to the corresponding light-receiving element 11; a plurality of amplifiers 18 provided to correspond to the plurality of light-receiving elements 11, respectively, the plurality of amplifiers each being configured to generate optical communication information by performing signal processing on the light detection signal; a light intensity information collection unit 25 configured to collect intensity of the light received by each of the plurality of optical fibers 13 as light intensity information; an optical fiber identification unit 27 configured to identify the optical fiber 13 that is receiving relatively strong light out of the plurality of optical fiber

Abstract: The present invention relates to a fiber branch structure for spatial optical communication for transmitting information by emitting communication light. The fiber branch structure is provided with: a light emitter configured to emit communication light; a light emission controller configured to control the light emitter; an optical fiber configured to transmit the light emitted from the light emitter; a distributor configured to distribute the light, the distributer being optically coupled to an output terminal of the optical fiber; and an optical fiber group optically coupled to a plurality of output terminals of the distributor. According to the present invention, a communication area can be established without blind spots. That is, the fiber branch structure for spatial optical communication according to the present invention includes an optical fiber group optically coupled to a plurality of output terminals of the distributor.