JPH04221246A - Obstacle confirming device - Google Patents

Abstract

PURPOSE:To easily confirm the existence direction of an obstacle by detecting the direction in which the obstacle for an own vehicle exists and outputting an alarm so that the direction can be confirmed on the basis of the result of the detection. CONSTITUTION:Sensors 3 installed at four corners of a vehicle 1 detect the existence of an obstacle 2. When the detection information is inputted into an alarm device 4, a CPU 6 switches each delay time for variable delay circuits 9FL-9FR and each amplification rate of amplifiers 8FL-8RR according to the direction of the obstacle 2. For instance, if the obstacle 2 approaches from the right rear, the delya time is set in the relation 9FL>9FR>9RL>9RR, and sets the amplification rate in the relation 8RR>8RL>8FR>8FF. The alarm signal supplied from an alarm signal source 7 is outputted from speakers 5FL-5RR, setting each with time difference and intensity defference. As the obstacle 2 approaches, each difference in the delay time and amplification rate is reduced. Accordingly, the feeling of presence is developed as if alarm is generated from the obstacle 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an obstacle confirmation device that can reliably determine the direction in which obstacles exist around a vehicle.

0002

[Prior Art] Conventional obstacle confirmation devices such as back sonar detect the presence of an obstacle and issue a warning with a buzzer or chime. It is difficult to confirm.

Furthermore, as disclosed in, for example, Japanese Utility Model Application Publication No. 168935/1983, an inter-vehicle distance sensor is provided to detect when a vehicle enters within a dangerous inter-vehicle distance and detect the incoming vehicle. On the other hand, a collision prevention warning device has also been proposed that automatically issues a warning to prevent a dangerous situation from occurring.

0004

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to make it possible to confirm the direction in which an obstacle exists relative to one's own vehicle.

[0005]

[Means for Solving the Problems] The present invention provides a sensor capable of detecting the direction in which an obstacle exists relative to one's own vehicle, and an embodiment capable of recognizing the direction in which the obstacle exists in response to detection by the sensor. and means for generating an alarm sound.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram of the operation of an embodiment of the present invention, and FIG. 2 is a system diagram showing an example of the alarm device.

In FIG. 1, sensors 3 for detecting the presence of an obstacle 2 using, for example, ultrasonic waves are provided at each of the four corners of a vehicle 1, and sensing information output from these sensors 3 is used as a warning signal. The alarm signal is processed by device 4 and transmitted through a 4-channel low frequency signal system to speakers 5FL, 5FR, 5RL, and 5RR placed in the four corners of the vehicle interior.
and these speakers 5FL, 5FR, 5RL,
An alarm sound indicating the presence of obstacle 2 is emitted from 5RR. In addition, the above speakers 5FL to 5R
The speakers of a car stereo device are used as R, and the subscripts FL, FR, RL, and RR attached to the speakers represent front left, front right, rear left, and rear right channels, respectively.

FIG. 2 is a block diagram showing the configuration of the alarm device 4, which includes a CP that processes sensing information.
U6, the alarm signal source 7, and the speakers 5FL, 5FR, 5RL, which amplify the alarm signal output from the alarm signal source 7.
Amplifiers 8FL, 8FR, and 8R drive 5RR, respectively.
variable delay circuits 9 that are interposed between the alarm signals L and 8RR, the alarm signal source 7, and each amplifier to delay the alarm signal.
It consists of FL, 9FR, 9RL, and 9RR. The CPU 6 analyzes the contents of the sensing information and outputs variable delay circuits 9FL to 9RR and amplifiers 8FL to 8RR for each channel.
is controlled to vary the delay time and amplification factor.

For example, as shown in FIG. 1, when the obstacle 2 approaches from the right rear, the CPU 6 sets the delay times of the variable delay circuits 9FL to 9RR as 9FL>9FR>9RL>
9RR, and the amplifier 8FL~
The amplification factor of 8RR is changed so that the relationship is 8RR>8RL>8FR>8FL. Furthermore, as the obstacle 2 approaches, the difference in delay time and amplification factor becomes smaller. By executing such control, the alarm sound can be felt with a vivid sense of presence as if it were being emitted from the obstacle 2,
Moreover, you can also get a sense of distance.

0010

According to the present invention, it becomes possible to easily recognize the direction in which an obstacle exists.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of the operation in an embodiment of the device of the present invention.

FIG. 2 is a block diagram showing an example of an alarm device used in the device of the present invention.

[Explanation of symbols]

1 Vehicle 2 Obstacles 3 Sensor 4 Alarm device 5 Speaker 6 CPU 7 Alarm signal source 8 Amplifier 9 Variable delay circuit

Claims (1)

[Claims] Claim 1: A sensor for detecting the direction in which an obstacle exists relative to the own vehicle, and in response to the detection by the sensor,
An obstacle confirmation device characterized by comprising means for generating an alarm sound in a manner capable of sensing the direction in which the obstacle is present.