JPS6346927A - Doze preventing device - Google Patents

Abstract

PURPOSE:To facilitate the turn-on and -off of the connection of a power source circuit, by connecting a switch provided on a pad to the power source circuit, and by turning on and off the switch in association with the taking on and off of a glass frame. CONSTITUTION:A pad 15 has a projection side surface adapted to make contact with the nose of a person on which a glass frame is put, and is formed therein with an impression 151 disposed therein with a switch 152 composed of a pair of stationary electrodes 153, a movable electrode 154 and a resilient member 155. This switch 152 is normally opened and when the movable electrode 154 is pressed overcoming the resilient force of the resilient member 155 and reaches the stationary electrodes 153, the switch 152 is closed. Lead wires 156 are led from the pair of stationary electrodes 153 to a temple 14 by way of the lens frame 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a doze prevention device that is worn while driving a car and detects and notifies the wearer of a dozing state.

(Prior Art) Conventionally, various measures have been taken to prevent people from falling asleep when they should be paying attention, such as when driving a car. FIG. 5 is a perspective view showing a doze prevention device as an example of such a doze prevention means.

This anti-drowsiness device is used by being worn on the driver's face, for example, when driving a car, and has a glasses frame 1 that can be hung on the driver's face.

The eyeglass frame 1 includes a pair of lens frames 2, temples 3 foldably attached to both ends of the lens frames 2, and pads 4 attached oppositely to the lower ends of the pair of lens frames 2. .

A detection Z5 that optically detects the open/open state of the eyelids and outputs it as an electrical signal is disposed at the attachment portion of the lens frame 2 and the temple 3. A processing main body 6 attached to the temple 3 is connected to the detector 5.

The processing main unit 6 controls the detector 5 and includes a built-in CPU 1 alarm unit that performs calculation processing based on the output signal of the detector 5, a battery, etc., and a manually operated power switch 7 is disposed on its surface. It is set up. The battery is connected to each electric circuit in the processing main body 6 including the drive side of the detection iS 5 via a power switch 7.

When the driver wears the eyelid prevention device 11E on his face and turns on the power switch 7, the detector 5 detects the opening/closing status of the driver's eyelids and sends this detection signal to the processing main unit 6.

The processing main unit 6 determines whether the driver is dozing off based on the captured detection signal, and when the driver is dozing off, it causes the alarm to emit an alarm sound to alert the driver's eyes. Wake me up.

(Problems to be Solved by the Invention) By the way, it is difficult to miniaturize such a dozing prevention device because it uses a manual switch, and it cannot be activated unless the switch is operated each time the device is worn. There was a bit of annoyance. Furthermore, there is a problem in that the user forgets to turn off the switch after wearing it, causing unnecessary consumption of the battery.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a doze prevention device that can be easily connected to a power source, does not consume unnecessary power, and can be miniaturized. purpose.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a glasses frame, is operated by power supplied from a predetermined W1 part, and detects whether or not a subject is dozing. The dozing prevention device that detects and gives notification is characterized in that the pad of the glasses frame is provided with a switch that turns on and off according to the signal 81112 of the glasses frame, and this switch is used as the switch on the output side of the power supply section.

(Embodiment) FIG. 1 is a perspective view showing a doze prevention device according to an embodiment of the present invention.

This anti-drowsiness device is equipped with a glasses frame 11 that is hung on the face of a car driver or the like. The eyeglass frame 11 includes a pair of lens frames 1 and 2, a temple 14 that is pivotally supported by a temple mount 13 fixed to an end of the lens frame 12 and is foldable with respect to the lens frame 12, and a lens frame. 1
2 and a pad 15 attached to the lower end of the eyeglass frame 11 that comes into contact with the wearer's nose and supports the eyeglass frame 11.

The pad 15 is an elliptical plate with a substantially arc-shaped cross section as shown in FIGS. A depression 151 is formed in. A switch 152 is disposed within the recess 151. The switch 152 includes a pair of fixed electrodes 153 arranged at the bottom of the depression 151, a movable electrode 154 arranged opposite to the fixed electrodes 153, and a movable electrode 154 between the bottom of the depression 151 and the movable vJ electrode 154. The arranged movable electrode 154
and an elastic member 155 that urges the front side of the recess 151. This switch 152 is normally in an open (non-energized) state, and when the movable electrode 154 is pressed against the elastic force of the elastic member 155 and reaches the fixed position 153, it becomes a closed (energized) state. A lead wire 156 is drawn out from the pair of fixed electrodes 153, and this lead wire 156 is guided to the temple 14 via the lens frame 12. temple 14
As shown in FIG. 1, a processing main body portion 16 is attached to the processing main body portion 16, and the lead FJ 156 is drawn into this processing main body portion 16.

On the other hand, a detector 17 is disposed on the lens frame 12 side of the -temple fixture 13. The detector 17 includes a light emitting diode 18 which is supplied with power and emits infrared light as shown in FIG.
and a photo resistor 19 that receives the light emitted from the light emitting diode 18 through a reflector at a predetermined position (for example, when worn on the driver's face, the driver's eyes correspond to the reflector). It is equipped with This detector 17 is connected to the processing main body section 16 via a cord 20.

As shown in FIG.
A battery 161 connected to a lead wire 156 drawn from the converter 162, and a calculation il! il 63 and alarm 1
64 and a controller 165, which controls and drives the light emitting diode 17 and performs predetermined arithmetic processing based on the received light signals qa obtained from the photo 1 to the transistor 18 to determine whether the wearer is dozing. It detects whether the wearer is dozing and wakes up by emitting the l÷U wealth.

The converter 162 manually converts the received light signal (analog signal) a obtained through photoelectric conversion by the phototransistor 18 into digital data, and outputs this to the processor 163 .

The calculator 163 takes in the digital signal from the converter 161, calculates the time that the wearer closes his eyes or the number of blinks per unit time based on this digital signal, and determines whether any of these oral decisions is correct. If it is above a predetermined reference value, an alarm signal indicating that the wearer is dozing off is generated and supplied to the alarm device 164. 5 The alarm device 164 receives the alarm signal and emits a predetermined alarm sound to wake up the wearer.

The control item 165 has a CPU, a timer, etc., and is connected to the battery 161 and the detector 17 via the cord 20, and receives power from the battery 161 when the switch 152 is on. In addition to driving the detector 17, the CPU, timer, etc. are activated to power on the doze prevention device.

The operation of the doze prevention device configured as above will be explained with reference to the flowchart of FIG. 4.

For example, when the driver wears the dozing prevention device on his face while driving a car, the movable electrode 154 is pushed toward the fixed electrode 151 against the elastic force of the elastic material 155.
53, and the switch 152 is turned on. Then, the controller 165 is supplied with power from the battery 161 to power on the doze preventer in step (hereinafter referred to as ST) 1), and initializes the doze preventer (ST2).

Then, under the control of the II WJ unit 165, the battery 161
Electric power is supplied to the light-emitting diode 18, and the light-emitting diode 18 emits infrared light toward the driver's eyes. This reflected light is input to the phototransistor 19 (S
T3). This human power light is charged and converted by a phototransistor 19 and sent to a converter 162 as a light receiving number 11. After this signal is converted into a digital signal by a converter 162,
It is taken into performance 1163. Then, the computing unit 163 performs a determination based on the captured signal (ST4). In this case, if the driver's eyes are open, the light reception signal a will be at a low level, whereas if the driver's eyes are closed, the light reception signal a will be at a high level. Therefore, if the driver falls asleep, a high level light reception signal a is continuously input to the arithmetic unit 163 via the converter 162. Furthermore, if the driver blinks, the light reception signal a becomes a pulse, and if the driver becomes sleepy and blinks more often, the light reception signal a becomes an intermittent pulse waveform, and the number of pulses per unit time increases.

The arithmetic unit 163 compares the received signal with the above-mentioned conditions to detect whether the driver is falling asleep (
ST5). That is, in ST5, if the performance device 163 continuously receives the high-level light reception signal a for a predetermined reference number of times or more, or if the number of pulses per unit time exceeds the reference number, the performance device 163 enters a "dozing state". If the above conditions are not met, it is determined that the user is not dozing (No>).If it is determined that the above condition is not met (No), then the arithmetic unit 163
sends an alarm signal to alarm device 164. The operation then proceeds to ST6.

In ST6, when the alarm 164 receives the 5th alarm 4ti, it emits a predetermined alarm sound to wake up the driver 1].

Note that if it is determined “No” in ST5,
The operation returns to ST3, and the operation is repeated in the same procedure as above.

When driving the car is finished and the glasses frame 1 is removed from the face, the movable electrode 154 is separated from the fixed electrode 153 by the elastic force of the elastic material 155 and swivels.

switch 152 is turned off. Then, from the battery 161
Power supply to the JIJt11 device 165 is stopped, thereby preventing wasteful power consumption.

(Effects of the Invention) As explained above, the present invention provides a switch in a pad and connects this switch to a power circuit). v: At the same time, it is turned on depending on the attachment and detachment of the glasses frame,
The opening/closing connection with the power supply circuit is simplified, the device can be made smaller, and the power supply is reliably stopped when the glasses frame is removed, so no power is wasted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a dozing prevention device according to an embodiment of the present invention, FIGS. 2(a) and (b) are cross-sectional views showing an example of the operation of the switch of the cohabiting sleeping preventer, and FIG. 3 is a coexisting sleeping preventer. FIG. 4 is a block diagram showing the sleep prevention device, and FIG.
-Chart A7- Fig. 5 is a perspective view showing an example of a conventional doze prevention device. 11... Glasses frame, 12... Glasses frame, 15
... Pad, 152 ... Switch, 16 ... Processing main unit, 161 ... Battery, 165 ... vItll device, 17 ... Detector.

Claims (1)

[Claims] In a dozing prevention device that has a glasses frame and is operated by power supplied from a predetermined power supply unit to detect and notify whether or not a subject is dozing off, a pad of the glasses frame is provided with a pad of the glasses frame. A doze prevention device, characterized in that it is provided with a switch that turns on and off in response to attachment and detachment, and this switch is used as a switch on the output side of the power supply section.