Nippon Soken, Inc.

Toyota Jidosha Kogyo Kabushiki Kaisha

Kazuo Oishi

Takashi Yamada

Takeshi Matsui

Matatoyo Hinachi

Masao Kotera

Toshiaki Kato

Hideaki Sasaya

Akihiro Kobayashi

Kazuo Iwase

Toru Toshioka

Yoshida Shuzo

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.

Following distance measuring communication system

A collision detecting system having a collision sensor for generating an AC collision signal and a signal processing circuit responsive to the AC signal for discriminating the occurrence of a collision and for generating an output signal when a collision occurs. A contactless connector interconnects the collision sensor and the signal processing circuit. The connector comprises a pair of separably interconnected elements for respectively supporting a primary winding and a secondary winding in operative relationship to one another, the primary winding being joined to the collision sensor and the secondary winding being connected to the signal processing circuit.

Collision detecting system

A fault detecting system adapted for detecting whether a occupants protective apparatus, e.g., an air bag apparatus, seat belt apparatus or rear-end collision preventing apparatus installed in a vehicle, particularly an automobile, is in a normal condition. The system comprises means for detecting the occurrence of a fault or faults in an occupants protective apparatus, means for storing the fact that the occurrence of a fault has been detected by the detecting means, and means for preventing the operation of occupants protective apparatus actuating means as long as the storage means retains its stored content, whereby misoperation of the occupants protective apparatus due to any faulty condition is prevented.

Fault detecting system for vehicle occupants protective apparatus

There is provided a driver assisting system in which the drivng conditions corresponding to the driving operation of a driver in a vehicle are detected to obtain a variation pattern of the driving conditions according to the variation of the driving conditions with time, and the degree of deviation of the variation pattern from the normal pattern inherent to the driver is computed, whereby information for assisting the driving operation of the driver is generated in accordance with the results of the computation.

System for providing a driving person with helpful information for

A collision detecting system is mounted on the front part of an automobile to detect collisions thereof and comprises a permanent magnet, a generating coil and a plunger as its principal component elements. In the system, the plunger in bar form is composed of a magnetic material and it is extended through and displaced within a space which is defined by the cylindrical permanent magnet and disk pole pieces provided at each end of the permanent magnet and having central openings, and the generating coil is mounted in the space to provide a magnetic circuit along with the plunger and the permanent magnet.

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.

Collision predicting operation system

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.

Relative distance indicating speedometer for a vehicle

A recording system for a vehicle occupant protecting apparatus wherein operating conditions of the various components of the occupant protecting apparatus are recorded, when the occupant protecting apparatus such as an air bag properly comes into operation, when conditions are detected which require the operation of the occupant protecting apparatus although its actual operation does not take place or when any fault occurs in the occupant protecting apparatus, thereby to know the various conditions and circumstances which existed during the collision or under the fault condition.

Recording system for vehicle occupant protecting apparatus

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.

Collision sensing system for vehicles

There is provided an ignition circuit for a vehicle occupant protecting system whereby in case of a collision a heating element such as a filament is ignited to actuate the occupant protecting system. Switch means is connected in parallel with the heating element and another switch means is connected in series with the parallel circuit of the heating element and the first switch means, whereby when at least one of said switch means is damaged, the ignition of the filament is rendered impossible.

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Oobu, Japan

Kazuo Oishi