JPH02216340A - Collision warning device for vehicle - Google Patents

Abstract

PURPOSE:To surely inform of approaching an obstacle and its approaching direction by actuating an alarm, positioned in the same side to an echo transducer in the one side, when a predetermined condition is satisfied by a range finder signal of the echo sounder transducer in either the left or right side. CONSTITUTION:In the case of a vehicle collision warning device 10 mounted to a car body 12, a transceiver 18, arranged in the central part of the car body 12, transmits to a pair of echo sounder transducers 14, 16, arranged in right and left front parts of the car body, a range finder signal for measuring a distance to an obstacle in front of the car body 12. Then each echo sounder transducer 14, 16 transmits the range finder signal of high directivity utilizing respectively a radio wave and an acoustic wave or light. And the range finder signal is transmitted from either one side, for instance, from the echo sounder transducer 14 in the left side, when the signal is reflected reaching the obstacle, the reflected range finder signal is successively received to the echo sounder transducer 14 in the left side and the transceiver 18. As the result, the transceiver 18, when the range finder signal satisfies a predetermined condition, actuates an alarm 20 in the left side.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention emits a distance measurement signal using radio waves, sound waves, light, etc. in front of a vehicle, and detects obstacles by hitting an obstacle and reflecting the distance measurement signal. This invention relates to a vehicle collision warning system that detects objects and issues a warning.

[Prior Art] Conventionally, vehicle collision systems emit an aH distance multiplier signal in front of the vehicle using radio waves, sound waves, light, etc., and detect obstacles and issue a warning based on the distance measurement signal that hits the obstacle and is reflected. Alarm devices are known, but this one is installed at the front of the vehicle]
7, detects obstacles by emitting ranging signals from transducers,
If an obstacle approaches a predetermined distance, a warning will be issued.

[Problems to be Solved by the Invention] By the way, in the above-mentioned collision warning device for a vehicle, a warning is issued when an obstacle approaches a predetermined distance, but it is not known from which direction the obstacle is approaching. Therefore, after the warning is issued, the driver must check from which direction the obstacle is approaching before avoiding the obstacle.
There was a problem with not being able to take evasive action with enough time.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a collision warning device for a vehicle that detects the direction in which an obstacle approaches and thereby solves the above-mentioned problems.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned circumstances, and a collision warning device for a vehicle according to the present invention is arranged one at each front end portion of a vehicle body and is provided at both front end portions of a vehicle body. A transducer that transmits and receives a highly directional ranging signal to measure the distance to an obstacle in the running direction, and a transducer that is coupled to the transducer to transmit and receive the ranging signal and a signal that connects the transducer to the obstacle. The vehicle is equipped with a transmitter/receiver for measuring distance, and an alarm device disposed on each side of the vehicle body and connected to the transmitter/receiver. If the distance information to the obstacle satisfies the predetermined alarm conditions based on the distance measurement signal from one transducer, an alarm signal is output to the alarm device located on the same side as one transducer, and the alarm signal is output from the alarm device. It is a warning.

Further, the alarm may be a speaker for a car stereo.

[Operation] Based on the above configuration, the transceiver transmits a ranging signal to the transducer, and the transducer receiving the ranging signal emits the ranging signal in the traveling direction of the vehicle. When the ranging signal emitted from one transducer hits an obstacle and is reflected, the reflected ranging signal is received by one transducer, and the ranging signal received by the one transducer is transmitted to the transceiver.

Furthermore, the transceiver measures the distance from the transducer to the obstacle based on the Δp1 distance signal, and if the distance information satisfies a predetermined alarm condition, an alarm is issued to the other transducer located on the same side as the other transducer. Outputs an alarm signal to the device. Then, only one of the alarm devices to which the alarm signal is input issues an alarm.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the vehicle collision warning system 10 is mounted on a vehicle body 12, and transmits highly directional ranging signals using radio waves, sound waves, light, etc. to the front left and right sides of the vehicle body 12. Transducers 14 and 16 for transmitting and receiving are provided. These transducers 14, 16 transmit and receive 'aj distance signals, and measure the distance from the transducers 14, 16 to the obstacle by a total of 11F.
1, the transceiver 18 is connected to
are connected to alarm devices 20 and 21 provided on the left and right sides of the vehicle body 12.

Next, the operation of this embodiment will be explained.

The transceiver 18 sends a ranging signal (transmission signal) for measuring the distance to an obstacle by 1-j to the transducer 14.16, and the transducer 14 receives the ranging signal from the transceiver 18. .1
6 emits a highly directional ranging signal using radio waves, sound waves, or light. If only the ilF+ range signal emitted from one of these transducers 14 and 16, for example the left transducer 14, hits an obstacle and is reflected, the reflected 1l11 range signal will be reflected. The signal is received by the transducer 14, and the transducer 14 sends a ranging signal (reception signal) to the transceiver 18. Then, the transceiver 18 calculates the distance from the transducer 14 to the obstacle based on the difference between the transmitted and received ranging signals, and the distance information from the transducer 14 to the obstacle satisfies the predetermined alarm condition. If satisfied, alarm 2 on the left
Outputs an alarm signal to 0. Furthermore, the alarm device 20 which has manually generated an alarm signal emits an alarm sound to notify that an obstacle is approaching from the left front.

Then, the driver who hears the warning sound steers the vehicle to the right to avoid the obstacle.

Also, alarm 20. ．． If 21 is a car stereo speaker, the increase in the number of parts can be minimized and the car stereo speaker can be used effectively.

[Effects of the Invention] As explained above, according to the present invention, when the distance information to an obstacle based on the ranging signal from one transducer satisfies a predetermined alarm condition, the distance information from one transducer Since the configuration is configured to issue an alarm by outputting an alarm signal to the alarm device located on the side, it is possible to notify the approach and direction of the obstacle, and to perform an operation to avoid the obstacle with plenty of time.

In addition, if the alarm is configured with car stereo speakers, the car stereo speakers can be used effectively.
The increase in the number of parts can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a collision warning system for a vehicle according to the present invention. 10... Vehicle collision warning system 12... Vehicle body 14.16... Transmitter/receiver 18... Transmitter/receiver 20.21... Alarm device

Claims (2)

[Claims] (1) A transducer that transmits and receives a highly directional ranging signal to measure the distance to obstacles in the way the vehicle is running, which is installed one at each end of the front end of the vehicle, and the transducer a transmitter/receiver that is coupled to transmit and receive a ranging signal and measure the distance from the transducer to an obstacle; and an alarm device disposed on each side of the vehicle body and connected to the transmitter/receiver. Preparation: The transceiver sends an alarm signal to an alarm device located on the same side as the one transducer when distance information to the obstacle satisfies a predetermined alarm condition based on the distance measurement signal from one transducer. A collision warning device for a vehicle, characterized in that the warning device outputs an alarm to issue a warning. (2) The collision warning system for a vehicle according to claim 1, wherein the warning device is a speaker for a car stereo.