JPS59140132A - Doze prevention device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a traffic accident due to doze driving by issuing an alarm when an output of a detection means detecting the collapse of an attitude due to a doze is continuously generated for a preset time or longer. CONSTITUTION:A capsule 12 made of non-magnetic material housing a reed switch 7 and a ball 13 made of soft magnetic material respectively between yokes 9, 9 and between yokes 10, 10 made of soft magnetic material arranged face to face across a magnet 11 is arranged to constitute a detection means. This detection means is preferably housed in a case and is fitted to the frame of the driver's glasses, for example. If the driver dozes and his head is tilted forward during the car driving, the ball 13 in the capsule 12 is rolled to the front end 12a side so that the reed switch 7 is closed due to dense and coarse magnetic fluxes between the yokes 9, 9 and between the yokes 10, 10 respectively, and when the closed condition of the switch 7 continues for a preset time of a timer 3 or longer, a speaker 6 is operated through an amplifier 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drowsiness prevention device for preventing drowsiness while driving, for example.

With the spread of automobiles in recent years, traffic accidents caused by drowsy driving have been occurring frequently, and there is an urgent need for measures to prevent such accidents, but so far no decisive measures have been taken, and drivers are I just left it to my own awareness. However, when driving on a monotonous road at night, the sense of danger fades.
This makes you prone to sleepiness.

Therefore, the present invention provides a dozing prevention device that detects the collapse of posture caused by dozing off and issues an alarm, thereby preventing disasters caused by dozing off.
It is especially designed to prevent traffic accidents caused by drowsy driving.

An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, a single crystal oscillator, 2 a frequency divider, 3 a timer, 4 a gate circuit, 5 an amplifier, and 6 a speaker. Number 7 is a reed switch, which will be described later, and number 8 is a resistor. The opening and closing of the reed switch 7 is controlled by attitude detection means shown in FIGS. 2 and 6. In the figure, 9.10 is a yoke made of soft magnetic material fixed to the magnet 11, and the gap between the yokes 9.9 and 10.101 is the yoke 9.10.
It is designed to be narrower than that of the original. Reference numeral 12 denotes a capsule made of a non-magnetic material such as plastic, in which a ball 13 made of a soft magnetic material is housed so as to be freely movable in the longitudinal direction. When the ball 13 is located between the yokes 10 and 10 as shown in FIG. 3, the magnetic flux between them is dense, and the magnetic flux between the yokes 9 and 9 is coarse, so that the reed switch 7 is opened and the ball 16 is located between the yokes 10 and 10 as shown in FIG. When it is on the end 12a side of the capsule 12, as in , the yoke 1o.

The magnetic flux between the yokes 9 and 9 is dense, and the reed switch 7 is closed.

The detection means and the circuit configuration shown in FIG. 1 are housed in the case 14 shown in FIGS. It sticks to. Mounting parts 1', 15.15-i are fixed to the case 14, and mounting parts 4=, 115
, 15 is provided with a protrusion 16 for operating a power switch 17 having the circuit configuration shown in FIG.

Reference numeral 18 denotes a sound cutout section of the speaker 6 shown in FIG.

A driver attaches the case 1'4 having the above structure to the frame of eyeglasses 19 as shown in FIG. 7 when driving a car. In this case, it is attached so that the sound extraction part 18 faces backward, that is, towards the ear.

The actuating projection 16 is pressed by this contact, and the first
Power is supplied to the circuit configuration shown. However, when the driver is driving in a normal posture as shown by the solid line in FIG. 8, the end 12a of the capsule 12 is located above the end 12b as shown in FIG. The ball 16 is located between the yokes 10 and 10 as shown in FIG.
is being developed.

Then, the driver falls asleep and his head tilts forward as shown by the broken line in FIG. 8, causing the end 12a of the capsule 12 to become
When the ball 13 is lowered further down, the ball 13 reaches the end 1 as shown in the fourth figure.
2a side, and the reed switch 7 is closed. When the reed switch 7 is closed for a period of time t2 or more as shown in FIG. 9A, the timer 5 operates to generate a pulse as shown in FIG. 9B, and an alarm sound is generated as shown in FIG. 9C. Therefore, even if the driver momentarily looks down to look at the instruments, etc., no warning sound is generated.

Note that the notification means for issuing the alarm is not limited to the above-described one, and a buzzer or the like may be used.

Next, another embodiment of the detection means will be described.

In FIGS. 10 and 11, reference numeral 20 is an ear ring made of plastic or the like, in which a housing portion 21 having a circuit structure and an earphone 22 are integrally molded.

231rl'K (This is the operating protrusion of the 114 switch.

A detection means is built into the lower part of the ear ring 20 as shown in FIG. In the same figure, 24.25 is a permanent magnet, 26.27 is a yoke, 28.29 is a reed switch,
30 is a ball made of soft magnetic material.

The ear ring 20 having the above structure is attached to the ear (indicated by a chain line) as shown in FIG. 16. Then, push the protrusion 26 to close the power switch. If the driver's posture is normal,
The reed switch 28 is connected to the ball 50 in the position shown in the twelfth figure.
, 29? 'i are both held open. If the driver falls asleep and his/her head tilts forward or backward, the ball 30 will fall between the yokes 26 and 26 or between the yoke 27.
．． 27, the reed switch 28 or reed switch 29 closes. When this closure continues for a certain period of time or more, an alarm sound is generated from the earphone 22.

By the way, the detection means is not limited to the above-mentioned one.
You may also use something like the one shown in the figure. In the figure, 51 is a leaf spring, and 62 is a contact piece, each of which is fixed to a fixed portion 63. A weight 64 made of a conductive material is attached to the tip of the leaf spring 61.
It is fixed.

When the above structure is tilted at a predetermined angle in the direction of arrow A, the leaf spring 31 is deflected by the weight of the weight 64, and the contact point 65 is moved to the contact piece 62.
come into contact with.

Furthermore, any device that can detect the posture, such as a mercury contact switch, may be used.

As described in detail above, according to the present invention, the collapse of posture due to dozing is detected and this continues for a preset time or more.
Since the alarm is only issued when the driver suddenly loses his or her posture while looking at the instruments, the alarm is not generated, and drowsiness can be detected reliably, preventing disasters caused by drowsing, especially drowsy driving. This is a great way to contribute to society.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of an embodiment of the present invention, Fig. 2 is a perspective view showing an example of the detection means, and Figs. 6 and 4 are partially cutaway diagrams showing the operating state of Fig. 2. Pressure surface diagram; Figure 5 is a partially cutaway pressure surface diagram of the case housing the configuration shown in Figures 1 and 2; Figure 6 is a left side view of Figure 5; Figure 7 is a view of the case in Figure 5 with glasses. FIG. 8 is an explanatory diagram showing the driver's posture. FIG. 9 is a time chart for explaining the operation. FIG. 10 is a front view showing another example of the detection means. , FIG. 11 is a left side view of FIG. 10, FIG. 12 is a sectional view taken along line ■-■ in FIG. FIG. 14 is a front view showing still another embodiment of the detection means. 3...Timer 6...Speaker 7...Reed switch 9.9, 10.10...Yoke 12...Capsule 16...Ball 20...Ear ring 24.25...Permanent Magnet 26.27... Yoke 28.29... Reed switch 60... Ball 31... Leaf spring 32... Contact piece 34... Weight 65... Contact point and above Patent applicant Co., Ltd. Seikosha Agent Patent Attorney Mogami Figure 1 Figure 9 Figure 2 Figure 5 Figure 6 Figure 7 Figure 8 Figure 1O Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] Consisting of a detection means for detecting a collapse of posture due to dozing, a control means for generating an output when the output of the detection means continues to occur for a preset time or more, and a notification means for issuing an alarm based on the output of the control means. Anti-drowsing device.