KR200490938Y1 - Slowing down driving guide system for school zone - Google Patents

Abstract

Disclosed is a deceleration driving induction system in a school zone. According to the present invention, a video of a walking child is provided, not a number, but a normal walking image of a child, a stopped child's image, and a falling child's image are provided so that the speed of driving in school zones can be intuitively felt according to the vehicle speed. By providing them separately, it is possible to actively induce safe driving in school zones for modern people who are insensitive to numbers. In addition, by projecting a child's video walking on the road surface in the school zone in which the vehicle is driving can be identified from a long distance can increase the awareness of the school zone to induce deceleration driving as well as the driver is projected on the road surface The laser video can give a bright and passing feeling to raise the awareness that children can be hit and cause an active psychological effect of preventing children's traffic accidents. In addition, according to the present invention, when the speed limit in the school zone exceeds 30 km, the laser video is projected with a different degree of danger depending on the speed of the school zone to visually clearly see how dangerous driving was in the school zone. In this way, the deceleration in the school zone can be habituated.

Description

Slow down driving guide system for school zone

The present invention relates to a deceleration driving guidance system in a school zone. More specifically, the deceleration driving guidance system installed in a school zone provides a video of a child type, not a number, but the risk of overspeed driving in a school zone according to the vehicle speed. In the school zone, it can be categorized into normal children's walking images, stops and surprised children's images, and falling children's images to actively induce safe driving in school zones. Relates to a deceleration driving induction system.

In addition, the present invention raises the awareness that the driver passing through the school zone can hit the child, and passes the video of the child to pass the child's traffic accidents at the beginning of the school zone or the vehicle to drive the active psychological effect The present invention relates to a deceleration driving guidance system in a school zone that projects children's moving images on a road surface.

The School Zone is a protected area for children around the elementary school, and is generally designated as a protected area of roads within a radius of 300 to 500m based on the main entrance of the school. Road attachments such as traffic lights, safety signs, and speed bumps should be installed in the area, and street parking lots cannot be installed on roads directly connected to the main entrance of elementary schools, etc., which are designated as protected areas. In addition, within the protected area, regular vehicles other than parents and staff are restricted from entering and leaving school, and the vehicle is prohibited from stopping or parking, and the speed of vehicles driving in the protected area is limited to 30 km or less. You must slow down.

Traffic accidents in the school zone, which has been steadily decreasing in 2009, were found to have increased 22% compared to the previous year in 2014, and out of 15,799 school zones nationwide, 211 unmanned enforcement equipment was installed, which is only 1.3%. 165 places, 78% of the places where unmanned enforcement equipment is installed, have speed limit of 40 ~ 70Km instead of 30Km.

However, these school zones are often not well known, and in particular, most drivers who pass through the school zone also drive during the time limit of vehicle driving in the school zone, and often do not observe the driving speed limit and signal signals. In particular, young students have poor judgment and distractions, and due to the spread of smartphones, they often walk crosswalks while playing games on smartphones or playing with friends.

According to the 2013 School Zone Traffic Accident Survey, about 66.4% of school zone traffic accidents are concentrated between school hours 2 to 6 pm and school hours 8 to 10 am. 92% of child traffic accident fatalities in the zone occurred during walking, especially 48.0% of deaths in crossing crosswalks, and 76% of all child traffic fatalities in the vicinity of crosswalks and other crossings. As mortality occurred during road crossings, we can see that young students have many accidents during road crossings, and the mortality rate is high.

In order to prevent child safety accidents in the school zone as described above, the most important thing is that the driver complies with the driving laws in the school zone, but there is a way for the driver to reduce the speed in a more active way for the driver in the school zone. Should be taken.

Republic of Korea Patent Publication 10-2006-0104663 discloses a school zone safety system. According to the published patent, a school zone safety system having a warning display unit installed in the school zone, wherein the warning display unit and a speed sensing unit for detecting the speed of the vehicle being driven; At the same time as the detection signal of the speed detection unit is applied, the speed detection reading unit which compares the threshold speed value stored in the ROM with the vehicle speed value and transmits the difference value to the control unit, and applies a signal to the output unit according to the signal of the speed detection unit. The vehicle speed is displayed on the display and a warning message is generated through the speaker. Also, the camera driver and the controller apply a signal to the camera to take a picture of the vehicle in progress, and the captured image is temporarily stored in the RAM. To reduce pedestrian traffic by allowing pedestrians to safely cross pedestrian crossings or crossings on roads close to schools, and upload images of vehicles that have been suspended or violated to the web server for monitoring. To be able.

In addition, Korean Patent Registration No. 10-0814316 discloses a school zone light and a method of installing the related art. According to the published patent, in a light installation method for displaying a situation by emitting light, cutting a road surface with a predetermined size with a circular cutter, cutting the road surface, adjusting the height of the body with the ground, and adjusting the direction of the light. In the step of adjusting the direction of the light and indicating the fixing position of the cover, and the display of the fixing position of the cover and installing the cover fixing anchor bolt on the road surface, installing the body and the cover and fixing the cover on the road surface Fixing the cover to the road surface and filling the space between the body and the road surface with epoxy resin, filling the space between the body and the road surface and removing the cover, removing the cover and connecting the lamp to the control unit in the body. Connecting with a lead wire, and connecting the lead wire and installing the lamp on the body. Eojinda. That is, the prior art as described above has the effect of preventing traffic accidents by placing a ramp on the crosswalk installed in the school zone to recognize that the driver is a school zone and to slow down or stop.

However, the conventional technology as described above has a problem in that it is not easy to apply the site due to the budget problem due to the burden of construction cost because construction is required to install the lamp on the crosswalk.

(1) Republic of Korea Patent Publication 10-2006-0104663 (2) Korea Patent Registration No. 10-0814316

The technical problem to be achieved by the present invention is a deceleration driving guidance system installed in the school zone to provide a video of the child type, not the number, but the normal children's walking image, so that you can feel the risk of overspeed driving in the school zone according to the vehicle speed It is to provide a decelerating driving guidance system in school zones that can induce safe driving in school zones for modern people who are insensitive to numbers by providing children's images that are pausing and surprised.

In addition, the school zone in which the vehicle runs for drivers who do not know the school zone's speed limit is 30 km or who do not know the importance of the school zone, such as not knowing that the speed limit is 30 km even in a wide lane. Or project children's walking on the road surface before school zone starts, not only can be identified from a distance, but also the driver passing through the school zone can brighten and pass the laser video projected on the road surface. It provides a deceleration driving guidance system in school zones that can raise the awareness that they can and cause an active psychological effect of preventing child traffic accidents.

The deceleration driving induction system in the school zone according to an aspect of the present invention for achieving the above object,

A video source storage unit for storing an infinitely repeated video having a shape of a walking child but extending the ratio of the original video horizontally when the driving direction is a horizontal direction, and outputting a video signal;

The video signal outputted from the video source storage unit is converted into a laser beam and is projected to be focused on a road surface so that the vehicle contacts and passes the laser video projected on the floor so as to raise awareness and cause guilt. A psychologically induced laser light irradiation unit, and

The video source storage unit and the laser light irradiation unit is accommodated, characterized in that it comprises a main body portion fixed to the upper end of the streetlight.

In addition, the system,

A speed detector configured to detect a speed of a vehicle entering the main body unit, and

The first control signal when the speed of the vehicle detected by the speed detection unit is less than the first predetermined speed, and the second control signal when the speed of the detected vehicle exceeds the predetermined first speed and is less than the second speed. The control apparatus may further include a controller configured to output a third control signal when the detected speed of the vehicle exceeds a predetermined second speed.

The video source storage unit,

And load and output a first image, which is a normal child walking image, in response to the first control signal, and load and output a second image, which is a stopped and surprised child image, in response to the second control signal. 3 loads and outputs a third image, which is an image of a child falling in response to a control signal,

The laser light irradiation unit,

More preferably, the first image, the second image, or the third image output from the moving image source / store output unit is received and converted into a laser beam and projected to be focused on the road surface of the road.

In addition, the laser light irradiation unit,

A laser diode, a collimating lens for making the laser emitted from the laser diode into horizontal light, a condensing lens for condensing the received horizontal light, an optical integrator for collecting the focused light, and light passing through the optical integrator A digital micromirror device for reflecting an image corresponding to a video corresponding to the video of the video source storage unit by reflecting the light beam, and a projection lens for projecting the reflected light onto a road surface, and to improve visibility of the laser video projected on the road surface. It is also possible to paint the floor of the road.

In addition, the deceleration driving induction system in the school zone according to another aspect of the present invention for achieving the above object,

A speed detecting unit 62 detecting a speed of the traveling vehicle;

When the speed of the vehicle sensed by the speed detecting unit 62 is less than the first predetermined speed, the first control signal is output. When the speed of the detected vehicle exceeds the predetermined first speed and is less than the second speed, the second control signal is used. A control unit 63 for outputting a control signal to the third control signal when the detected vehicle speed exceeds a predetermined second speed;

A walking child has a shape of a child, but when the driving direction is a horizontal direction, an infinitely repeating video that extends the ratio of the original image horizontally is stored and outputs a video signal, which is a normal child walking image in response to the first control signal. A third image that loads and outputs a first image, loads and outputs a second image that is a stopped and surprised child image in response to the second control signal, and a child image that falls down in response to the third control signal A video source storage unit 60 for loading and outputting the video source storage unit;

An LED controller 61 for converting an LED video signal using a video signal selected from a first image, a second image, and a third image output from the video source storage 60;

Speed display LEDs 610 and 800 indicating the speed of the passing vehicle;

Video display LEDs 612 and 802 for displaying the LED video converted by the LED control unit 61;

A control board 80 on which the video source storage unit 60, the LED controller 61, speed display LEDs 610 and 800, and video display LEDs 612 and 802 are mounted;

Signs having a first opening 820 and a second opening 822 cut out to allow the speed display LEDs 610 and 800 and the video display LEDs 612 and 802 of the control board 80 to protrude to the outside. Main body 82; And

A second transparent window 842 and a child protective device corresponding to an area corresponding to the first opening 820 and transparent and corresponding to an area corresponding to the area of the first opening 840 and the second opening 822. And a school zone display sticker 84 having printing areas 844 and 846 indicating the serving.

The deceleration driving guidance system according to the present invention provides a video of a child type, not a number, but a normal child walking image, a stopped child's image, and beyond, so that the danger of overspeed driving in a school zone can be intuitively determined according to the vehicle speed. By providing the children's images of losing, it is possible to induce safe driving in the school zone to the modern people who are insensitive to numbers. In addition, the school zone in which the vehicle runs for drivers who do not know the school zone's speed limit is 30 km or who do not know the importance of the school zone, such as not knowing that the speed limit is 30 km even in a wide lane. Or project children's walking on the road surface before school zone starts, not only can be identified from a distance, but also the driver passing through the school zone can brighten and pass the laser video projected on the road surface. It can raise the awareness that it can and can provoke an active psychological effect of preventing traffic accidents in children.

1 is a block diagram showing the structure of a deceleration driving guidance system in a school zone according to a first embodiment of the present invention,
2 and 3 are views for explaining the effect of the deceleration driving induction system in the school zone according to the present invention,
4 is a view for explaining the effect of outputting different laser video for each detected speed section in the deceleration driving guidance system in the school zone according to an embodiment of the present invention,
5 is a view showing an example of the structure of the laser light irradiation unit applied to the deceleration driving induction system in the school zone according to the present invention.
6 is a block diagram schematically showing the structure of a deceleration driving guidance system in a school zone according to a second embodiment of the present invention;
7 is a view for explaining an example of the front appearance of the deceleration driving induction system in the school zone according to the second embodiment of the present invention,
8 is an exploded perspective view showing the structure of a deceleration driving guidance system in a school zone according to a second embodiment of the present invention;
8 is a block diagram showing the structure of a deceleration driving guidance system in a school zone according to a second embodiment of the present invention;
9 and 10 are views for explaining the effect of the deceleration driving induction system in the school zone shown in FIG.
11 is a block diagram illustrating a structure capable of selectively receiving a display image from a network interface or a memory card as a deceleration driving induction system according to another embodiment of the present invention;
12 is a photograph and a block diagram each showing an example of an X-axis mirror / Y-axis mirror structure and a servo driver structure applicable to the present invention;
13 is a block diagram showing an example of the structure of an X-axis scanner / Y-axis scanner and a shutter and a laser light source applicable to the present invention,
14, 15, and 16 are block diagrams illustrating a Doppler type speed sensing structure applicable to speed sensing according to the present invention;
17 is a view for explaining the structure and the effect of applying the pulse type in the Doppler speed detection applicable to the speed detection of the present invention,
18 and 19 are diagrams for explaining the effects of the operation of FIG. 17 in a spectrum, and
20 and 21 is a view for explaining an embodiment and the operation effect of the Doppler type speed detection applicable to the speed detection of the present invention for each lane.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a structure of a deceleration driving guidance system in a school zone according to a first embodiment of the present invention. 1, the deceleration driving induction system in the school zone according to the present invention,

In the main body part 1 fixed to the upper end of the streetlight attention,

A video source storage unit 10 for storing an infinitely repeated video having a shape of a walking child and extending the ratio of the original video horizontally when the driving direction is a horizontal direction, and outputting a video signal;

The video signal output from the video source output unit 10 is converted into a laser beam and is projected to be focused on the road surface so that the vehicle can touch and pass the laser video projected on the floor to raise awareness and cause guilt. The laser beam irradiation part 11 which guides psychologically so that it may be accommodated is accommodated.

The video source storage unit 10 may be understood as a simple player that not only stores a video but also plays only a solid outline.

In addition, as another embodiment of the present invention,

A speed detecting unit 12 for detecting a speed of a vehicle entering the main body unit 1 or installed near the main body unit 1, and

When the speed of the vehicle sensed by the speed detecting unit 12 is less than the first predetermined speed, the first control signal is output. When the speed of the detected vehicle exceeds the predetermined first speed and is less than the second speed, the second control signal is used. The control unit further includes a control unit 13 for outputting a third control signal when the detected vehicle speed exceeds a predetermined second speed,

The video source storage unit 10,

In response to the first control signal, a first image 100, which is a normal child walking image, is loaded and output, and in response to the second control signal, a second image 102 that is a stopped and surprised child image is loaded. Outputs and loads and outputs a third image 104 that is a child image that falls down in response to the third control signal,

The laser light irradiation unit 11,

* Takes the first image 100, the second image 102, or the third image 104 output from the video source / storage output unit 10, converts the laser beam into a laser beam, and projects it onto the road surface of the road. do.

With reference to FIGS. 2 and 3, the operation and effect of the deceleration driving induction system in the school zone shown in FIG. 1 will be described. Referring to FIG. 2, when the children's video 22 walking on the road surface 20 in the school zone is projected, the children's video 22 may be identified from a long distance, thereby increasing the recognition of the school zone and inducing deceleration driving.

In addition, as shown in FIG. 3, the deceleration driving guidance system in the school zone according to the present invention brightly passes the laser image 34 projected on the road surface 32 by the vehicle 30 passing through the school zone. It is important to note that the driver of the vehicle, even if it is a painting, feels psychological guilt and can raise the awareness that he or she may hit the child if he does not slow down in the school zone, and may cause an active psychological effect of preventing child traffic accidents.

On the other hand, with reference to Figure 4 will be described the effect of outputting different laser video for each detected speed section in the deceleration driving induction system in the school zone shown in FIG. The speed detector 12 installed near the main body 1 detects the speed of the vehicle (S40). The controller 13 identifies whether the speed of the vehicle sensed by the speed detector 12 is less than the first predetermined speed (S41), and detects the first control signal when the speed is less than 30 km per hour. If the speed of the vehicle is greater than the predetermined first speed and is less than the second speed (S42), the second control signal is detected when the second speed, for example, less than 50 km / h, is detected. When the speed exceeds 2, the third control signal is output.

Now, the video source storage unit 10,

In response to the first control signal, a first image 100, which is a normal child walking image, is loaded and output (S43), and a second image 102 which is a stopped and surprised child image in response to the second control signal. Loads and outputs (S44), and loads and outputs (S45) a third image 104, which is a child image that falls down in response to the third control signal,

The laser light irradiation unit 11,

The first image 100, the second image 102, or the third image 104 output from the moving image source / storage output unit 10 is received and converted into a laser beam to be projected to be focused on a road surface of a road. .

By providing a different message to the driver about the speed of the vehicle entering the school zone, the school zone requires you to drive at a lower speed than the speed you feel as if you are driving slower than other roads. By recognizing that the speed limit is exceeded, the school zone is actively guided to the significant deceleration, so that the school zone can feel the speed feeling about the deceleration operation.

Figure 5 shows an example of the structure of the laser light irradiation unit that can be applied to the deceleration driving induction system in the school zone according to the present invention. Referring to FIG. 5, the laser light irradiator 11 includes a laser diode 1100 having extremely high brightness, a collimating lens 1102 for making the laser emitted from the laser diode 1100 into horizontal light, and the received horizontal light. Condensing lens 1104 for condensing, an optical integrator (1110) for collecting the collected light, and reflects the light passing through the optical integrator (1110) to the image corresponding to the video of the video source storage unit 10 A reflecting digital micromirror device (DMD) 1120, and a projection lens 1140 for projecting the reflected light onto the road surface.

At this time, the laser video viewed from the car should take a form that is extended horizontally when the vehicle travel direction is larger than the actual ratio. When the driving direction is called the horizontal direction, it stores an infinitely repeated video that extends the ratio of the original video horizontally and outputs a video signal.

The projection lens 1140 projects the horizontally extended video on the floor of the road surface.

The digital micromirror device 1120 employed in the above embodiment is used in a DLP type projector and has excellent luminance as compared to an LCD type projector. In the present invention, the high-brightness laser diode 1100 together with the digital micromirror device 1120, a collimating lens 1102 for making the emitted laser into horizontal light, a condensing lens 1104 for condensing the received horizontal light, and The optical integrator (1110), which collects the collected light, allows the laser to be irradiated with sufficient luminous flux on the road surface. Since this method is based on the mirror method, the brightness is excellent, but in order to improve the visibility of the laser video projected on the actual road surface, it is more preferable to apply the paint to the floor of the road using various paints, and to select the color of the laser. Will be applicable.

In the above embodiment, simply replace the video stored in the video storage with another video to play the video and the laser irradiation unit irradiates the video with laser light so that drivers of vehicles continuously passing the road are not fed. New videos can be provided to renew the mindset of safe driving at regular intervals.

6 is a block diagram schematically illustrating a structure of a deceleration driving induction system in a school zone according to a second embodiment of the present invention, and FIG. 7 is a deceleration driving induction system in a school zone according to a second embodiment of the present invention. An example of the front appearance of the is shown, and FIG. 8 shows the structure of the deceleration driving induction system in the school zone according to the second embodiment of the present invention as an exploded perspective view.

6, the deceleration driving guidance system in the school zone according to the second embodiment of the present invention,

A speed detecting unit 62 detecting a speed of the traveling vehicle;

When the speed of the vehicle sensed by the speed detecting unit 62 is less than the first predetermined speed, the first control signal is output. When the speed of the detected vehicle exceeds the predetermined first speed and is less than the second speed, the second control signal is used. A control unit 63 for outputting a control signal to the third control signal when the detected vehicle speed exceeds a predetermined second speed;

A walking child has a shape of a child, but when the driving direction is a horizontal direction, an infinitely repeating video that extends the ratio of the original image horizontally is stored and outputs a video signal, which is a normal child walking image in response to the first control signal. A third image that loads and outputs a first image, loads and outputs a second image that is a stopped and surprised child image in response to the second control signal, and a child image that falls down in response to the third control signal A video source storage unit 60 for loading and outputting the video source storage unit;

And a LED controller 61 for converting the video signal from the first image, the second image, and the third image output from the video source storage 60 into the LED video signal.

As shown in FIG. 7, the front of the deceleration driving guidance system in the school zone according to the second embodiment of the present invention has a speed display LED 610 for displaying the speed of the passing vehicle on the main body 6 and an LED video. The display device includes a video display LED 612 for displaying a child protection zone, a first cover region 632, a second cover region 634, and a speed guide marker 636.

6 and 8, the deceleration driving guidance system in the school zone according to the second embodiment of the present invention includes: speed display LEDs 610 and 800 indicating a speed of a passing vehicle;

Video display LEDs 612 and 802 for displaying the LED video converted by the LED control unit 61;

A control board 80 on which the video source storage unit 60, the LED control unit 61, speed display LEDs 610 and 800, and video display LEDs 612 and 802 are mounted;

Signs having a first opening 820 and a second opening 822 cut out to allow the speed display LEDs 610 and 800 and the video display LEDs 612 and 802 of the control board 80 to protrude to the outside. Main body 82; And

A second transparent window 842 and a child protective device corresponding to an area corresponding to the first opening 820 and transparent and corresponding to an area corresponding to the area of the first opening 840 and the second opening 822. And a school zone display sticker 84 having printing areas 844 and 846 indicating the serving.

9 and 10, the operation and effect of the deceleration driving induction system in the school zone shown in FIG. 8 will be described. Referring to FIG. 9, when there is no vehicle entry, the LED video is not displayed and the speed is measured and displayed when the vehicle enters. Referring to FIG. 10, a video of a child form, not a number, may be provided as a normal child walking image, a stopped and surprised child image, and a falling child image so as to intuitively sense the danger of overspeed driving in a school zone according to the vehicle speed. More preferably, it is more preferable to alternately display guide texts and videos such as “pause in front of pedestrian crossing” or “keep less than 30 km in school zone”.

The deceleration driving induction system in the school zone according to the present invention as described above is provided according to the speed of the vehicle in accordance with the normal child walking image, stop and surprised children image, and falling children image of the speeding in the school zone It is thought to contribute to inducing safe driving in the school zone for the modern people who are insensitive to the number due to the intuition of danger.

FIG. 11 is a block diagram illustrating a structure capable of selectively receiving a display image from a network interface or a memory card as a deceleration driving induction system according to another embodiment of the present invention. Referring to FIG. 11, it is possible to minimize the cost of maintenance in such an embodiment that the user can concentrate his / her attention by providing an updated image through the network interface and always providing a new image to the driver.

12 shows an example of an X-axis mirror / Y-axis mirror structure and a servo driver structure applicable to the present invention as photographs and block diagrams, respectively.

FIG. 13 is a block diagram illustrating an example of a structure of an X-axis scanner / Y-axis scanner, a shutter, and a laser light source applicable to the present invention.

14, 15, and 16 illustrate a Doppler-type speed sensing structure applicable to speed sensing of the present invention. Referring to FIGS. 14 to 16, it is preferable to comply with 24.125 GHz (K-band ISM) because it can be operated within a domestic licensed frequency band. The bandwidth is 100 MHz and the radar beam width is 26 degrees in the horizontal direction and 26 degrees in the vertical direction. The road setting allows you to detect approximately 400 meters, which is best suited to the school zone.

It is possible to implement the general principle of upconverting the oscillation signal generated by the local oscillator to the signal generated by the signal generator, amplifying it through a band pass filter, transmitting it through an antenna, and downconverting the reflected signal after low noise amplification.

17 is a view for explaining the structure and effect of applying the pulse type in the Doppler-type speed detection applicable to the speed detection of the present invention. Referring to Figure 17, when R is a range, c is the speed of the wave, the time delay Td,

Same as above, and transmits the upconverted wave in the transmission mode, and receives and downconverts it in the reception mode. Such a pulsed-Doppler radar is preferable to be applied to a school zone such as the present invention because range detection and speed detection are possible.

18 and 19 are diagrams for explaining the effects of FIG. 17 in a spectrum. Referring to FIGS. 18 and 19, when M sample sets are received from the range cell #K, the final detection is performed through FFT calculation and the speed is estimated through accurate Doppler frequency estimation. The Doppler shift amount can be used to measure vehicle speed.

20 and 21 are diagrams for explaining an embodiment in which the Doppler-type speed sensing applicable to the speed sensing of the present invention is installed for each lane and its effects. Referring to Figure 20, the Doppler speedometer applicable to the speed detection of the present invention is preferably installed in the middle of the lane to be monitored and is installed inclined downward. 6 degrees in the horizontal direction and 26 degrees in the vertical direction form a trapezoidal pattern on the road surface. Referring to FIG. 21, transmission and reception may be performed using an RS-485 serial communication interface.

1: main body
10: video source storage
100: first image 102: second image
104: third image
11: laser light irradiation part
1100: laser diode (1100) 1102: collimating lens
1104 condensing lens 1110 optical integrator
1120: Digital Micromirror Devices
1140: Projection Lens
12: speed detection unit 13: control unit
20: road surface 22: children's videos
30: vehicle 32: road surface
6: main body
610: Speed display LED 612: Video display LED
632: first cover region 634: second cover region
636 speed guide sign
80: control board
800: Speed display LED 802: Video display
82: sign body
820: first opening 822: second opening
84: school zone indicator sticker 84;
840: first transparent window 842: second transparent window
844, 846: print area

Claims (5)

In a system for inducing drivers to decelerate in school zones,
A video source storage unit for storing an infinitely repeated video having a shape of a walking child and extending the ratio of the original video horizontally when the driving direction is a horizontal direction and outputting a video signal;
The video signal output from the video source storage unit is converted into a laser beam and is projected to be focused on the road surface so that the vehicle can pass through the laser video projected on the floor to raise awareness and cause guilt. Psychologically induced laser light irradiation;
A main body part fixed to an upper end of a street lamp to accommodate the moving image source storage part and the laser light irradiation part;
A speed detector installed near the main body; And
The first control signal is detected when the speed of the vehicle detected by the speed detector is less than the first speed, and the second control signal is detected when the speed of the detected vehicle is greater than or equal to the first speed and less than the second speed. And a controller configured to output a third control signal when the detected vehicle speed is equal to or greater than the second speed.
The video source storage unit,
And load and output a first image, which is a normal child walking image, in response to the first control signal, and load and output a second image, which is a stopped and surprised child image, in response to the second control signal. 3 loads and outputs a third image, which is an image of a child falling in response to a control signal,
The laser light irradiation unit,
Takes a first image, a second image, or a third image output from the video source storage unit, converts the first image, the second image, or the third image into a laser beam, and projects the focused image on a road surface of a road
The laser light irradiation unit,
A laser diode, a collimating lens for making the laser emitted from the laser diode into horizontal light, a condensing lens for condensing the received horizontal light, an optical integrator for collecting the focused light, and light passing through the optical integrator And a digital micromirror device for reflecting the image corresponding to the video of the video source storage unit by reflecting the light, and a projection lens for projecting the reflected light onto the road surface.
In order to improve the visibility of the laser video projected on the road surface, painting is applied to the road floor surface.
The speed detection unit,
And deriving a range of the radar associated with the vehicle according to a Doppler method based on a pulse of the radar, thereby detecting the speed of the vehicle. delete delete delete delete

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