JPS63138498A - Drowse alarm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dozing alarm device that detects and notifies whether or not a subject is dozing.

(Prior art) As one of the accident prevention devices to prevent accidents caused by drowsy driving, etc., conventionally, the physiological state of the person (driver) driving a car etc. is measured and the driver's fatigue is determined. A drowsiness warning device 1 that detects a state or the like is known.

FIG. 5 is a perspective view showing an example of such a nap alarm bag jz.

According to this figure, the drowsiness alarm bag 4 consists of a glasses frame 1 that is hung on the driver's face, a handle 3 that is attached to the lens frame 2 of the glasses frame 1, and a handle 3 that is attached to the lens frame 2 of the glasses frame 1. A detector 4 is supported cantilevered by a support arm extending from
A wooden part that determines whether the driver is dozing off based on the driver's eye closure time detected by the detector 4 and issues an alarm name, etc. when the driver is dozing off. 6, and if the driver closes his/her eyes for a certain period of time, 1! To prevent accidents by alerting drivers to f-signs, etc.

(The problem that the invention attempts to solve) By the way, what about this kind of conventional doze? In the 3-detection system, a detector 4 is mounted on the outside of the lens 7 by a support arm extending from the shell 3, and the movement of the driver's eyelids is detected by the detector 4 through the lens 7. However, there was a problem in that the detector 4 was likely to shift position due to vibrations during operation.

Further, when the detector 4 moves, the detector 4 and the lens 7 often rub against each other, resulting in scratches on the lens 7.

Furthermore, in this drowsiness alarm device, the movement of the driver's eyelids is detected through the lens 7, so if a mirror lens is used as the lens 7, the movement of the driver's eyelids is detected by the detector 4. The problem is that it doesn't work.

Furthermore, since the detector 4 is within the field of view of the driver, there is an inconvenience that the field of view of the driver is narrowed.

In view of the above-mentioned circumstances, the present invention can prevent the positional shift of the detector, and also allows the lens to be
A dozing alarm device that can prevent the driver from falling asleep, can also detect the movement of the driver's eyelids when using a mirror lens, and can prevent the detector from entering the field of view. is intended to provide.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a drowsiness alarm device that detects and notifies whether or not a subject is dozing off. An eyeglass frame that is hung over the face of an examiner; a detector that is attached near the connection between the eyeglass frame and the dimples of the eyeglass frame and detects a closed state of the eye of the examinee; and this detector. The present invention is characterized by comprising a processing unit that detects and notifies continuous eye closure of the subject based on the output of the subject.

(Example of Actual Flow) FIG. 1 is a perspective view showing an embodiment of a dozing alarm device according to the present invention.

I11[i') shown in this figure! What is IIFi equipment?
It is equipped with a glasses frame 10, a detector 11, a device main body 12, and a cord 13, and detects the open/closed state of the driver's eyes and generates a buzzer sound when the driver starts dozing off. Wake up the driver's eyes.

The eyeglass frame 10 includes a lens frame 14 into which a lens 43 is fitted, and two temples 15 connected to both ends of the lens frame 14.
A detector 11 is attached to a lens frame side portion 16a of one connecting portion 16 between the lens 4 and the temple 15, and a device main body 12 is attached to the temple 15.

As shown in FIG. 2, the detector 11 includes a base 8 fixed to the inside of the lens frame side portion 16a connected to the connecting portion 16, and a base 8 which is rotatable to the base 8 via a joint 9. The detector body 24 is equipped with a detector body 24, which is attached to the detector body 24, and an optical surface 25 of the detector body 24 is provided with a light emitting diode 17 and a phototransistor 1, as shown in FIG.
8 is provided.

When the light emitting diode 17 is supplied with a driving pulse from the @vnoki rest body 2, it generates infrared light and emits it to the eyes of the exerciser.

The phototransistor 18 also detects whether the driver's eyes strongly or weakly reflected the infrared light, and supplies this detection result to the device main body 12 via the cord 13.

In this case, if the driver's eyes are listening, the field rays will be weakly reflected, and if the driver's eyes are closed, they will be strongly reflected.

The main body 12 of the device includes one rectangular case that is attached to the dimple 15, and inside the box 19 there are a signal converter 20, an F1 operator 21, a cap 22, and a controller. 23, the signal converter 20 receives the detection signal (Ablog signal ¥5) from the phototransistor 18 when the light emitting diode 17 emits light under the control of the controller 23. In this case, this is converted into two digital signals 4 (“1” or 0-pa pulse number 15), and the digital signal [411] is
) No. 31 is supplied to the pruner 21.

The performance controller 11 uses a trigger type timer, a digital comparator, etc. to calculate the pulse interval of the digital signal train, the width of each pulse signal, etc. when the digital signal train is supplied from the signal converter 20. The system is configured to measure the amount of time the driver's eyes are closed (eye-closed time) based on the measurement results, and when this eye-closed time is longer than a predetermined time, the driver's eyes are closed. It generates a kidney alert signal indicating that the user is dozing off, and supplies this to the alarm device 22.

The alarm device 22 is equipped with a buzzer cap, and when supplied with the alarm signal, continuously outputs a beeping sound to wake up the driver.

Further, the control unit 23 is equipped with a clock generation circuit, various control circuits, etc., and controls the light emitting diode 17 to cause it to emit pulses at predetermined intervals (for example, 10 m5), and controls the light emitting diode 18 to When the light is emitted, the signal converter 20 is operated.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

First, when the power switch 28 provided on the wooden body 12 of this dozing alarm device is turned on, the controller 23 starts operating and turns each part of the circuit into one (step 5).
T1), while causing the light emitting diode 17 to emit a pulse of infrared light to emit infrared light to the driver's eyes, the phototransistor 18 indicates whether the driver's eyes strongly or weakly reflected the external light. Anti-q・1 is detected U, and this detection result is converted into a signal i! ! 2wi conversion at 20 5 (Suf ”/
7 S T 2 ).

Then, based on the binarization result, the σ operator 21 determines the time period during which the driver's eyes are closed (eye-closed time) from the pulse interval, pulse width, etc.
), if this 11 eye time is less than the predetermined time, the process returns to step ST2 and the above-described operation is repeated (step 5T4).

When the driver's eyes closed time exceeds a predetermined time, the operator 21 generates an alarm signal indicating that the driver is dozing off, and the alarm 22 continuously emits a beeping sound. output to wake up the driver.

As described above, in this embodiment, the glasses frame 10
Detected on the lens frame side portion 16a of the connecting portion 16: S
Since the detector 11 is installed, the detector 11 can be
The position will not shift.

Also, regardless of the shape of the glasses, generally the temples are 15.
The position of the connecting part 16 of the driver and the position of the driver's eyes are approximately the same 16, so what kind of glasses should the detector 1 be attached to?
1, it is possible to accurately detect the open/closed state of the driver's eyes. Further, in this case, it is possible to deal with differences in the depth of the eyeballs that differ from driver to driver by adjusting the angle of the detection:S main body 24.

Further, since the detector 11 does not touch the lens 43, the lens dowel 3 is not damaged by the detector 11.

Furthermore, since the detector 11 directly detects the opening and closing of the driver's eyes, the detector 11 can detect the opening and closing of the driver's eyes even when a mirror lens is used.

Furthermore, since the detector 11 is arranged outside the lens surface, the driver's field of vision can be widened.

(Effects of the Invention) As explained above, according to Mokubonmei, it is possible to prevent the detector from shifting, so it is possible to accurately detect the opening and closing states of the driver's eyes, and Not only can eyelids be prevented, but the movement of the driver's eyelids can be detected even when a mirror lens is used.Furthermore, since the detector is located outside the field of view, it does not obstruct the field of view and is less troublesome.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of a dozing alarm device 6 according to the present invention, Fig. 2 is a partially enlarged plan view of the same embodiment, and Fig. 3 is a partially enlarged plan view of the same embodiment.
FIG. 4 is a circuit block diagram of the same embodiment, FIG. 4 is a flowchart showing an example of the operation of the same embodiment, and FIG. 5 is a perspective view showing an example of a conventional dozing alarm device. 10... Glasses frame, 11... Detector, 12.
...Where 1'f! part (apparatus main body), 16... connection part. Agent Patent attorney Iwan P<2 (1 other person) 24
Figure 3 Figure 4

Claims (1)

[Claims] In a dozing alarm device that detects and notifies whether a subject is dozing off, the device is attached to an eyeglass frame that is hung on the face of the subject, and near the connection between the eyeglass frame and the temple of the eyeglass frame, The present invention is characterized by comprising a detector that detects the open/closed state of the subject's eyes, and a processing unit that detects and notifies continuous eye closure of the subject based on the output of the detector. Drowsiness alarm device.