摘要:
There is provided a collision predicting operation system comprising a radar circuit whereby a reflected wave which has been radiated from an oscillator and encountered and reflected from a target is received and caused to interfere with the radiated wave to generate a doppler signal, an oscillator circuit group for generating a periodic wave synchronized with the doppler signal when the amplitude of the doppler signal is higher than a predetermined value and its frequency is within a predetermined range, means for changing the oscillation frequency of the oscillator in synchronization with the periodic wave, and means for detecting the polarity and the amount of change of the phase of the doppler signal changed by the frequency modulating means.
摘要:
A following distance measuring communication system comprising a transmitter and a receiver which are mounted on the front part of a following automotive vehicle, a time measuring unit connected to the transmitter and the receiver provided on the following automobile, and an answering transmitter-receiver unit mounted on the rear part of a preceeding vehicle. A pulse modulated signal is transmitted from the transmitter on the following vehicle, and this signal is received by the answering transmitter-receiver unit on the preceeding vehicle. At the instant that the signal is received, the answering transmitter-receiver unit on the preceeding vehicle generates a reply signal which is in turn received by the receiver on the following vehicle. The time required for this process is measured by the time measuring unit connected to the following vehicle receiver to determine the distance between the following vehicle and the preceeding vehicle.
摘要:
There is provided a relative distance indicating speedometer for a vehicle comprising relative distance detecting means for measuring the relative distance of a vehicle carrying the speedometer with respect to an object such as the vehicle in front, and relative distance indicating means for indicating the measured relative distance in accordance with the output signal of the relative distance detecting means. The relative distance indicating means are arranged in the speedometer which indicates the speed of the vehicle, and therefore the apparatus of this invention is inexpensive to manufacture and simple in construction.
摘要:
A pulse radar system which is designed for installation on a vehicle. A control pulse generating circuit is triggered by the trailing edge of a transmitting pulse to generate a pulse train consisting of 8 time-divided pulses which in turn are supplied to a distributor. Simultaneously, the echo of the transmitted pulse is demodulated and the resulting signal is applied to the distributor so that depending on which one of the 8 divided pulses corresponds to the applied demodulated signal, the distance to the target is displayed on the corresponding indicator.
摘要:
An ultrasonic wave transmitter/receiver wherein an ultrasonic wave transducer is connected to a radiating ultrasonic wave carrier frequency oscillator through a switching means during transmission, while the ultrasonic wave transducer is connected to an operational amplifier and a band pass filter through the switching means during reception, comprises an impedance conversion circuit at an input of the operational amplifier to form a band pass amplifier of a low input impedance. By this arrangement, a receiving sensitivity near an antiresonance frequency of the transducer is reduced to lower the receiving sensitivity for noise, but without sacrificing an echo receiving sensitivity thereof, and a stable receiving operation is assured for possible change in a characteristic of the transducer.
摘要:
A collision sensing system for vehicles is provided in which a moving core shaft having alternately notched and projecting portions formed thereon or a permanent magnet serving as a moving core and magnetized to create therein alternate north and south poles is disposed to move relative to a stator for providing a magnetic path, whereby when a vehicle comes into collision, the magnetic reluctance of the magnetic path is caused to change rapidly at plural times and a generating winding wound on the stator thus generates the waveform of an output voltage proportional to the rate of the plurality of changes of the magnetic reluctance. This output voltage is compared with a predetermined value to determine, whether a controlled system such as an air bag should be actuated to thereby actuate the controlled system properly.
摘要:
A powder transfer mechanism laminates powder layers containing water-soluble powder as a main component one by one at a modeling portion. An inkjet line head injects a water-based ink that dissolves the powder in an area of an uppermost layer of the powder layers laminated by the powder transfer mechanism, the area corresponding to a cross-sectional shape of a modeled object. Then, a heater heats the powder for each layer of the powder layers. Further, the heater heats the powder after the water-based ink is injected by the inkjet line head or before the water-based ink is injected by the inkjet line head. The present invention can be applied to a modeling apparatus, for example.
摘要:
Disclosed is a method of manufacturing a molded object. The method includes: supplying a first liquid material to a first region out of a molding enabling region where a powder material is arranged and curing the powder material of the first region using a lamination molding technology to form a first insoluble part insoluble in a solvent; supplying a second liquid material different from the first liquid material to the powder material of a second region, which is provided so as to be surrounded by the first region, out of the molding enabling region and curing the powder material of the second region using the lamination molding technology to form a second soluble part soluble in the solvent; and dissolving the second part in the solvent.
摘要:
Provided is a liquid composite for producing a three-dimensional shaped article, the liquid composite being used in an inkjet printer, the liquid composite including a porous carbon material having a specific surface area value as measured by the nitrogen BET method of 10 m2/g or more, a pore volume as measured by the BJH method of 0.1 cm3/g or more and a pore volume as measured by the MP method of 0.1 cm3/g or more.
摘要:
Disclosed is a method of manufacturing a molded object. The method includes: supplying a first liquid material to a first region out of a molding enabling region where a powder material is arranged and curing the powder material of the first region using a lamination molding technology to form a first insoluble part insoluble in a solvent; supplying a second liquid material different from the first liquid material to the powder material of a second region, which is provided so as to be surrounded by the first region, out of the molding enabling region and curing the powder material of the second region using the lamination molding technology to form a second soluble part soluble in the solvent; and dissolving the second part in the solvent.