JPH08161667A - Device for alarming excess speed of automobile - Google Patents

Abstract

PURPOSE: To allow the device for alarming excess speed of automobile to warn only a driver of excess speed surely by means of vibration instead of sound. CONSTITUTION: A drive speed detected by a speed sensor 11 is compared with a setting speed from a storage device 12 at a speed comparator 13 and when the drive speed exceeds the setting speed, the comparator 13 provides an output signal to a vibrator driver 21. The driver 21 generates a vibrator drive signal in response to the output signal and the drive signal drives a vibrator 22, from which vibration is generated. The vibrator 22 is mounted onto, e.g. a steering wheel 3 thereby waring surely only to the driver of excess speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle overspeed warning device using a vibrator.

[0002]

2. Description of the Related Art A conventional vehicle speed excess warning device generates a predetermined alarm sound to notify the driver when the traveling speed exceeds a set speed.

[0003]

However, the vehicle speed excess warning device having the above-mentioned structure has the following problems. First, with the spread of car stereos, it is becoming difficult to recognize the warning sound of overspeeding when driving with the car stereos sounding at a loud volume. Is becoming difficult to achieve. Further, since the alarm means by sound is used, only the driver may be required, but even passengers may be affected by the alarm sound.

SUMMARY OF THE INVENTION An object of the present invention is to provide an overspeed warning system for an automobile which solves the above-mentioned conventional problems by allowing only the driver to reliably recognize an overspeed warning by vibration, not by sound.

[0005]

In order to achieve the above object, the vehicle speed excess warning device of the present invention stores speed detection means for detecting the traveling speed of the vehicle and preset speed settings. Set speed storage means, speed comparison means for comparing the traveling speed detected by the speed detection means with the set speed stored in the set speed storage means, and a vibrator drive signal according to the comparison output of the means. The gist of the present invention is to include a vibrator driving unit for generating the above-mentioned, and a vibrator driven by the drive signal.

In the above-mentioned device of the present invention, it is preferable to use a piezoelectric element as the vibrator, and this vibrator is preferably provided in the steering wheel of the automobile.

[0007]

In the device of the present invention, when the traveling speed exceeds the set speed, the vibrator is driven, and the driver is warned by detecting the vibration.

[0008]

Embodiments of the present invention shown in the drawings will be described below.
FIG. 1 shows an embodiment of the vehicle speed excess warning device of the present invention. In the figure, 1 is an overspeed determination device, and 2 is a vibration generator. The speed excess determination device 1 includes, for example, a speed detector 11 including a tachometer and the like, and a set speed storage device 1
2. Comprised of a speed comparator 13 and the like. Set speed storage device 12
Is, for example, a normal digital memory 12a and D / A
The converter 12b includes an input unit 12c and a memory 12a.
The voltage corresponding to the set speed input to and stored in D
It is given from the / A converter 12b to the speed comparator 13. The set speed storage device 12 may simply be a potentiometer to which a direct current power source is connected, and the set speed can be changed by a slider of the potentiometer.

Further, the vibration generator 2 is a vibrator driving device 2
1 and a vibrator 22 and the like. A vibration motor or a piezoelectric element may be used as the vibrator 22. A film element made of a flexible polymer material or a ceramic material is suitable as the piezoelectric element. The vibration generator 2 is provided at or near the handling operation part of the driver's seat, and in particular, the vibrator 22 is incorporated in the handle 3 itself as shown in FIG. It may be built in the handle cover.

The speed comparator 13 generates an output signal when the traveling speed detected by the speed detector 11 exceeds the set speed, and the vibrator driving device 21 responds to the output signal to drive the vibrator. Generate a signal. The drive signal drives the vibrator 22 to generate vibration, and, for example, the driver's hand holding the steering wheel 3 can surely sense an excessive speed as a warning due to vibration. After that, when the vehicle speed is decelerated and the traveling speed becomes equal to or lower than the set speed, an output signal is not output from the comparator 13, so that the vibration is stopped. The switch 5 may be provided so that the switch 5 can be turned off immediately after the vibration is sensed.

[0011]

As described above, according to the present invention, since the warning of the excessive speed is provided not by the sound but by the vibration, the following excellent practical effects can be obtained. (B) The driver senses the alarm directly with his / her skin, not with sound, but with vibration, so that he is strongly aware of overspeeding, which is highly recognizable and effective in providing safe driving. . (B) Not affected by the volume of the car stereo,
You can be sure that you are notified of overspeed. (C) Since the driver is limited to receiving the warning,
No annoyance to passengers. (D) Since the vibrator can be attached to the steering wheel, it can be easily installed in existing vehicles. (E) By using a flexible polymer film piezoelectric element as a vibrator and incorporating it in a part of the handle cover, it can be made highly practical and inexpensive.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a schematic view showing a mounted state of a vibrator.

[Explanation of Codes] 1 Overspeed determination device 2 Vibration generator 11 Speed detector 12 Set speed storage device 21 Transducer drive device 22 Transducer 3 Handle 4 Handle cover 5 Switch

Claims (3)

[Claims] 1. A speed detecting means for detecting a running speed of an automobile, a set speed storing means for storing a preset set speed, a running speed detected by the speed detecting means and the set speed storing means. A speed comparing means for comparing the set speed stored in the, a vibrator driving means for generating a vibrator driving signal according to the comparison output of the means, and a vibrator driven by the driving signal. An overspeed warning system for automobiles. 2. The overspeed warning device for an automobile according to claim 1, wherein a piezoelectric element or a vibration motor is used as the vibrator. 3. The vehicle overspeed warning device according to claim 1, wherein the vibrator is provided on a steering wheel of the vehicle.