Abstract: A range image obtaining system for a track includes a laser slit light source disposed within a plane perpendicular to a tread of a rail and emits laser slit light within the plane; a two-dimensional image imaging device which is disposed to have an angle with respect to the plane perpendicular to the tread of the rail and obtains a light sectioning image generated from the laser slit light; and an image signal processing device for generating a range image based on a distance from the two-dimensional image imaging device based on the light sectioning image.

Abstract: Provided is a platform door device which makes it possible to reduce the length of time for a replacement operation when a panel-shaped portion of a door is damaged. The platform door device comprises a door, and a driving mechanism for moving the door forwardly and backwardly to close and open a gate on a platform. The driving mechanism includes a motor, a rotation body adapted to be rotated by the motor, and a driven body adapted to be driven according to the rotation of the rotation body so as to move the door, and the door has a panel-shaped main body, and a base segment detachably joined to the main body and attached to the driven body.

Abstract: It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.

Abstract: To provide a power generation member having a high power generating capacity, a power generation device using the same, and a power generation system. A power generation member 1 includes: a piezoelectric element 2 in which electrodes 2a and 2c are formed on both main faces of a plate-shaped piezoelectric ceramic 2b; a pressing member to press one main face of the piezoelectric element 2; and a support member 4 to support the other main face of the piezoelectric element 2, wherein the support member 4 supports an outer rim of the piezoelectric element 2, and the pressing member 3 presses the piezoelectric element 2 at a part inside the support member 4 with a planar pressing face. It is possible to reduce cancellation of the generated charge, as well as to allow the piezoelectric ceramic 2b to deform sufficiently to produce large strain by pressure energy generated by a walking man or vibration energy generated by a running car and the like. As a result, it is possible to effectively obtain large electricity.

Abstract: An Omnidirectional rain gauge measures an azimuth and zenith direction of flying rainwater. The Omnidirectional rain gauge includes catchment and measurement units. The catchment unit has a plural conical cylinders having individually different heights, and being overlaid so that bottom vertexes of the plural conical cylinders coincide with or come close to each other. The overlaid plural conical cylinders are partitioned by partitions, arranged radially in a plurality of horizontal azimuth directions, to form a plurality of catchment cells. Each of the plurality of partitions is shaped as semicircle following a virtual spherical outer circumference. Diameter of each of top opening parts opposite to the bottom vertexes, of the overlaid plural conical cylinders is sized to follow virtual spherical outer circumference.

Abstract: It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.

Abstract: An Omnidirectional rain gauge measures an azimuth and zenith direction of flying rainwater. The Omnidirectional rain gauge includes catchment and measurement units. The catchment unit has a plural conical cylinders having individually different heights, and being overlaid so that bottom vertexes of the plural conical cylinders coincide with or come close to each other. The overlaid plural conical cylinders are partitioned by partitions, arranged radially in a plurality of horizontal azimuth directions, to form a plurality of catchment cells. Each of the plurality of partitions is shaped as semicircle following a virtual spherical outer circumference. Diameter of each of top opening parts opposite to the bottom vertexes, of the overlaid plural conical cylinders is sized to follow virtual spherical outer circumference.

Abstract: A system and method to flexibly control intervals between trains in which there are base stations at predetermined intervals along a train rail. Each base station has a radar which detects data of distance between the base station and trains moving on the train rail, a traveling command calculator which calculates a traveling command based on the date of distance, and a traveling command providing device which provides the traveling command calculated by the traveling command calculator to the trains.

Abstract: The invention flexibly controls intervals between trains, and provides a train control system and method therefore with a less amount of cables and without relays. The invention discloses a train control system for controlling trains comprising base stations at predetermined intervals along a train rail. Each base station consists of a radar which detects data of distance between the base station and trains moving on the train rail, a traveling command calculator which calculates a traveling command based on the data of distance, and a traveling command providing means which provides the traveling command calculated by the traveling command calculator to the trains.

Abstract: A speed measuring apparatus includes: a modulation circuit for carrying out a direct spread modulation with respect to a transmission carrier signal using coded two-phase random signals; an antenna unit for transmitting the modulated transmission carrier signal as a radio-wave toward an object and for receiving a reflected wave from the object; a demodulation circuit for demodulating a signal corresponding to the received reflected wave using the transmission carrier signal, to thereby generate intermediate frequency signals; a correlation circuit for making correlation between the intermediate frequency signals and signals each having the same code as that of the coded two-phase random signal and having a phase delayed by a predetermined time; a Doppler detecting unit for extracting from an output signal of the correlation circuit a Doppler frequency component contained in a signal which has been propagated by way of a propagation path existing in a specified distance range, and for generating speed informat

Abstract: A magnet-type transportation system of a car-side primary type includes a rail of a magnetic material, fixedly laid down along a traveling track, and a power car capable of self-movement by a plurality of wheels adapted to roll over the traveling track. The power car includes a plurality of magnet belt conveyor units, each having a magnet belt extended in an endless manner around a driving wheel and a driven wheel. The power car also includes a power unit and a power transfer/transmission mechanism for driving each conveyor unit. The power car is adapted so that the magnet belts mounted thereon are magnetically attracted to the rail.

Abstract: The carrier for linear motor vehicle-borne field magnets includes a aluminium profiled material of a gate shape in section, which is provided with recesses of permanent magnet size in both its legs. Permanent magnets attached to iron cores are inserted into the recesses in such a way that the N and S poles thereof are opposite to each other and alternate in the longitudinal direction of the carrier frame to form a spatial magnetic field by the alternation of the N and S poles between both the legs of the carrier frame, which interacts with the moving magnetic field created by ground-side coils to generate driving power. The carrier further includes support wheels, guide wheels and a vehicle support on which a vehicle is placed.