JPH02162500A - Automatic collision preventing device - Google Patents

Abstract

PURPOSE:To automatically execute exact braking, when an object which is advancing in front decelerates suddenly, etc., by calculating output signals from a range finding means and a speed measuring means, and executing braking, based on the speed difference and the distance difference of the object and a self-car. CONSTITUTION:The self-car 2 is mounted with a distance sensor A, a speed sensor B, an arithmetic unit C, a braking device D and an alarming device E. The arithmetic unit C calculates the relative acceleration of the other car 1 and the self-car 2, and a necessary braking distance of the self-car 2, from distance information alpha inputted from the distance sensor A and the speed S of the self-car 2 inputted from the speed sensor B. When the magnitude of a necessary braking distance extent which is calculated exceeds a safety range determined in advance, an output signal is generated to the alarming device E. Also, the arithmetic unit C generates the output signal to the braking device D, as well, and the braking device D is operated and allowed to execute an exact braking operation. In such a manner, when an object which is advancing in front decelerates suddenly, etc., exact braking can be executed automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic collision prevention device that automatically prevents collisions of moving bodies such as automobiles.

[Prior Art] Conventionally, driving safety devices for moving objects such as automobiles have been provided with detection means such as ultrasonic sensors attached to the rear of the moving object.
There is a type that notifies passengers by emitting an alarm sound when the distance between itself and an object approaches a certain value.

[Problems to be solved] Although the above-mentioned conventional collision prevention devices can check the rear, they do not have a safety bag for the front of the vehicle, and of course do not automatically brake the vehicle. .

The present invention has been made in view of the above-mentioned problems.
The purpose of the present invention is to provide an automatic collision prevention device that can automatically perform appropriate braking when an object traveling ahead suddenly decelerates.

[Means for Solving the Problems] In order to achieve the above object, the automatic collision prevention device of the present invention comprises a distance measuring device for measuring the distance to an object, a speed measuring device for measuring its own speed, and the distance measuring device. and processing means for calculating the output signal from the speed measuring means, and the processing means automatically brakes itself based on the speed difference and distance difference between the object and itself. be.

[Example] An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram showing one embodiment of the present invention, and is an example applied to an automobile.

In the figure, 1 is an object of another vehicle traveling ahead, and 2 is the own vehicle.

The own vehicle 2 has a distance sensor A, a speed sensor B, and a calculation device C2.
It is equipped with a braking device and a warning device E.

The distance sensor A constantly measures the distance α between the other vehicle l in front and the own vehicle 2, and outputs it to the calculation device C. As this distance sensor A, various sensors such as a conventionally known ultrasonic sensor can be employed.

Speed sensor B constantly measures the speed S of own vehicle 2 and outputs it to calculation device C similarly to distance sensor A. This speed sensor B may also be a conventionally known one.

The calculation device C receives the output information (distance α and speed S) from the distance sensor A and the speed sensor B, and constantly calculates the relative acceleration between the other vehicle 1 and the own vehicle 2 and the required braking distance of the own vehicle 2. , calculates the required braking amount based on the braking saturation force of the own vehicle 2.

Next, automatic braking operation according to this embodiment will be explained.

Distance information α input from distance sensor A by computing unit &fC
From the speed S of the own vehicle 2 inputted from the speed sensor B, the relative acceleration between the other vehicle 1 and the own vehicle 2 and the required braking distance of the own vehicle 2 are calculated.

If the calculated amount of required braking pressure S exceeds a predetermined safety range, an output signal is sent to the alarm system f.
Issued to f1E.

The g-information device E displays an alarm and outputs an alarm sound in response to a signal from the @Sousokin C, thereby informing the passenger of the danger of a collision.

Further, the arithmetic unit C also issues an output signal to the braking device to operate the braking device to perform an appropriate braking operation.

Although the above-described embodiments have been described as collision prevention devices for automobiles, the present invention is not limited thereto, and it is clear that the present invention can also be adopted as an automatic collision prevention bag for other types of moving objects. be.

[Effects of the Invention] As explained above, the automatic collision prevention device of the present invention includes a distance measuring device for measuring the distance to an object, a speed measuring device for measuring its own speed, and a combination of the distance measuring device and the speed measuring device. processing means for calculating the output signal from the means,
Since the processing means automatically brakes itself based on the speed difference and distance difference between the object and itself, by equipping a moving object such as a car shade with this device, In emergencies such as when an object suddenly decelerates, or when an obstacle approaches, the system will be able to automatically apply appropriate braking and notify passengers accordingly. It is effective and has a very large effect of greatly improving safety.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing the configuration of a first embodiment of the present invention. 1: Other vehicle (object) 2: Own force A: Distance sensor B: Speed sensor C: Arithmetic device D = Braking device E: Alarm device α: Distance between own vehicle and object S: Speed proxy of own vehicle People Patent Attorney Kihei Watanabe

Claims (1)

[Claims] It consists of a distance measuring means for measuring the distance to an object, a speed measuring means for measuring its own speed, and a processing means for processing output signals from the distance measuring means and the speed measuring means, the processing means An automatic collision prevention device characterized by automatically braking itself based on the speed difference and distance difference between the object and itself.