Abstract: This electromechanical transducer includes a pair of magnets, a pair of yokes that each comprise a plurality of yoke components superposed over each other in a flat-plate-form region and that guide magnetic fluxes generated by the magnets, a hollow-core coil to which an electric signal is supplied, an armature passed through a space inside a structural section formed by integrally arranging the magnets and the coil on the inner sides of the pair of yokes, and a pair of elastic members that each engage the structural section and the armature.

Abstract: An electroacoustic transducer includes an electromechanical transducer and a casing. The electromechanical transducer transduces an electric signal into mechanical vibration. The housing can be attached to a cavum conchae without blocking an external auditory canal, in which the electromechanical transducer is housed, and vibrates due to the mechanical vibration caused by the electromechanical transducer to generate sound. The housing includes an inner housing portion located on the external auditory canal side and an outer housing portion located on an external environment side when the housing is attached to the cavum conchae. The housing has an ellipsoidal shape or an oval shape.

Abstract: The electromechanical transducer is provided with: a structure portion in which a magnet, yokes, and a coil are integrally arranged; an armature which includes an inner portion penetrating through an internal space of the structure portion along a central axis in the X-direction, and outer portions, constitutes a magnetic circuit with the structure portion, and is displaced in the Z-direction; and elastic members providing the armature with a recovery force. Each of the elastic members has a first and a second engaging portions. A width in which a force in the Z-direction acts between each of the elastic members and the structure portion via the first engaging portion has a first distance. A width between each of the elastic members and the outer portion via the second engaging portion has a second distance in the Y-direction, wherein the dimension condition of 2a>2×2b is set.

Abstract: The electromechanical transducer is provided with: a structure portion in which a magnet, yokes, and a coil are integrally arranged; an armature which includes an inner portion penetrating through an internal space of the structure portion along a central axis in the X-direction, and outer portions, constitutes a magnetic circuit with the structure portion, and is displaced in the Z-direction; and elastic members providing the armature with a recovery force. Each of the elastic members has a first and a second engaging portions. A width in which a force in the Z-direction acts between each of the elastic members and the structure portion via the first engaging portion has a first distance. A width between each of the elastic members and the outer portion via the second engaging portion has a second distance in the Y-direction, wherein the dimension condition of 2a>2×2b is set.

Abstract: An installation structure of a vibrator includes elastic members formed of an elastic material, the elastic members being arranged between a housing of a listening device, and the vibrator accommodating an electromechanical transducer for transducing an electric signal into mechanical vibration. The vibrator is installed on the listening device such that a lower surface of the vibrator is disposed at a position facing an ear cartilage in a state where the listening device is worn on an ear, and a first mechanical impedance of the elastic members between the vibrator and the housing is set smaller, at a frequency of 200 Hz to 1000 Hz, than twice a second mechanical impedance, with which the vibrator is loaded, of the ear cartilage.

Abstract: A laser tracker is installed on the ground, and an active target is mounted on an air vehicle. A reference coordinate system is set for the laser tracker, and a flight scenario created in advance based on a 3D model is used. Flight of the air vehicle is performed while an amount of deviation from the flight scenario is being calculated using position information obtained by the laser tracker, and corrections are being made. The air vehicle is instructed not only on an amount of movement but also on speed, so that efficient flight can be performed in consideration of battery capacity.

Abstract: An installation structure of a vibrator includes elastic members formed of an elastic material, the elastic members being arranged between a housing of a listening device, and the vibrator accommodating an electromechanical transducer for transducing an electric signal into mechanical vibration. The vibrator is installed on the listening device such that a lower surface of the vibrator is disposed at a position facing an ear cartilage in a state where the listening device is worn on an ear, and a first mechanical impedance of the elastic members between the vibrator and the housing is set smaller, at a frequency of 200 Hz to 1000 Hz, than twice a second mechanical impedance, with which the vibrator is loaded, of the ear cartilage.

Abstract: An electroacoustic transducer includes an electromechanical transducer and a casing. The electromechanical transducer transduces an electric signal into mechanical vibration. The housing can be attached to a cavum conchae without blocking an external auditory canal, in which the electromechanical transducer is housed, and vibrates due to the mechanical vibration caused by the electromechanical transducer to generate sound. The housing includes an inner housing portion located on the external auditory canal side and an outer housing portion located on an external environment side when the housing is attached to the cavum conchae. The housing has an ellipsoidal shape or an oval shape.

Abstract: A measurement apparatus is to be mounted on a flying craft that flies in vicinity of the architectural structure and the measurement apparatus controls the flying craft to move to a measurement position indicated as a relative position with respect to a position of the flying craft and measures the architectural structure.

Abstract: A flight control device which controls an air vehicle flying around a structure, the flight control device including: a detection-position movement controller which causes the air vehicle to move to a detection position for detecting the designated sign, the detection position being given for the designated sign; a sign detector which, when the air vehicle arrives at the detection position, detects the identification code of the sign and measures a flight relative position which is a position of the air vehicle relative to the sign; and a designated-position adjustment unit which, when the sign detector detects the identification code of the designated sign, controls a flying position of the air vehicle, based on the flight relative position and a position of the via point relative to the designated sign, so that the flying position matches the via point.

Abstract: An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.

Abstract: An electromechanical transducer of the invention comprises a structural unit, an armature, and the first and second elastic units. The structural unit includes magnets, a yoke and a coil. The armature includes an inner portion disposed to pass through inside the structural unit and two outer portions protruding from the inner portion in a first direction, and the armature constitutes a magnetic circuit with the structural unit via two regions through which components of the magnetic flux flow in reverse directions in the inner region. The elastic units give restoring forces to the outer portions in response to displacement of the armature due to magnetic forces of the magnetic circuit. In the armature, a cross-sectional area at a predetermined position between the two regions is smaller than that at the two regions, and magnetic flux flowing in the first direction within a range of displacement of the armature.

Abstract: A strain calculation apparatus (300) calculates strain in a structure (100) based on environment-versus-temperature information and temperature-versus-strain information. The environment-versus-temperature information associates environmental data affecting a temperature increase or decrease in the structure (100) at an installation location of the structure (100) with the temperature of the structure (100) acquired when the environmental data is acquired. The temperature-versus-strain information associates a temperature of the structure (100) with strain in the structure (100) at the temperature.

Abstract: A laser tracker is installed on the ground, and an active target is mounted on an air vehicle. A reference coordinate system is set for the laser tracker, and a flight scenario created in advance based on a 3D model is used. Flight of the air vehicle is performed while an amount of deviation from the flight scenario is being calculated using position information obtained by the laser tracker, and corrections are being made. The air vehicle is instructed not only on an amount of movement but also on speed, so that efficient flight can be performed in consideration of battery capacity.

Abstract: A measurement apparatus is to be mounted on a flying craft that flies in vicinity of the architectural structure and the measurement apparatus controls the flying craft to move to a measurement position indicated as a relative position with respect to a position of the flying craft and measures the architectural structure.

Abstract: An image capturing system for shape measurement includes: an image capturing device configured to capture an image of a structure; an air vehicle; an on-board control device configured to control the image capturing device and the air vehicle in accordance with an image capturing scenario; and a remote control device configured to create an image capturing scenario and transfer the created image capturing scenario to the on-board control device. The air vehicle autonomously flies to image capturing points sequentially so as to capture images. The captured data is transmitted to the remote control device via a wireless LAN.

Abstract: An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.

Abstract: A flight control device which controls an air vehicle flying around a structure, the flight control device including: a detection-position movement controller which causes the air vehicle to move to a detection position for detecting the designated sign, the detection position being given for the designated sign; a sign detector which, when the air vehicle arrives at the detection position, detects the identification code of the sign and measures a flight relative position which is a position of the air vehicle relative to the sign; and a designated-position adjustment unit which, when the sign detector detects the identification code of the designated sign, controls a flying position of the air vehicle, based on the flight relative position and a position of the via point relative to the designated sign, so that the flying position matches the via point