KR20180092541A - Lighting control system for pedestrian safety - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control system for safety of pedestrians, and more particularly, to a lighting control system for safety of a pedestrian, in order to solve a visibility restriction of a driver in a low- When the pedestrian signal is a red light, a beep is emitted when the pedestrian signal is detected by the infrared sensor, and the warning light is turned on at the bottom of the pedestrian crossing. The system is provided with a lighting control system for safety of a pedestrian, which ensures the safety of a pedestrian in a walkway, reduces the incidence of a traffic accident, and is more effective for safety of a pedestrian.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a lighting control system for pedestrian safety,

The present disclosure relates to a lighting control system for the safety of pedestrians, and more particularly, to a lighting control system for pedestrian safety, in which safety light is turned on according to the values of a vehicle signal, a pedestrian signal and an illuminance sensor via a microcontroller, To a lighting control system for safety of a pedestrian equipped with a system for turning on a warning light on the bottom of a pedestrian crossing,

Traffic accidents are accidents in which people are mistaken for a traffic accident on the road due to traffic accidents (Article 54 of the Road Traffic Act). Traffic accidents in the Road Traffic Law refer to accidents that occur on the roads. Traffic accidents (Article 2 (2)) refers to the accident or destruction of a person due to the traffic of a car. The term 'car' is used to mean driving on the road by the power of automobiles, construction machines, motorcycles, bicycles, people or livestock, or other power sources.

There are many car accidents so that it usually means a car accident on the road. In today's industrialized society, automobiles are most closely related to pedestrians on the roads due to the massive spread of automobiles. As a result, automobile accidents have been rapidly increasing, and daily accidents have been reported, causing serious socio- Is becoming a big social problem to be regarded as one of the main public health problems. The causes of traffic accidents are mainly drivers 'and pedestrians' carelessness, but there are too many safety rules to keep in case of narrow roads and inadequate safety facilities.

Most of the traffic accidents are caused by the failure of safe operation such as uncertainty of control, speed violation, violation of priority stop, violation of distance from the preceding vehicle, drunken driving, drowsiness, over driving and signal violation. However, . In addition, accident rates caused by the habit of frequently viewing modern portable devices are also rising.

Accidents are the most common cause of death and disability in young people under the age of 44, and traffic accidents are a major part of accidents.

Traffic accidents accounted for the sixth largest cause of death in 2007 according to the death statistics. The current status of traffic accidents in Korea has been steadily increasing from the 1970s to the 2000s and has been declining since 2000. However, compared with 1.6 cases per 10,000 vehicles in the OECD average in 2007, Korea has 3.1 cases and accidents per 100,000 people are 9.1 In Korea, there are 12.7 people among the OECD countries. Especially, the elderly traffic accident death is the highest among OECD countries and the mortality rate of child traffic accident is also very high.

The occurrence of a traffic accident can be divided into the cause of the driver or the pedestrian, the environmental cause, and the vehicle itself. However, many traffic accidents can be caused by only one factor, but they are mainly caused by multiple factors. A thorough analysis of the causes of such traffic accidents can prevent traffic accidents by eliminating the causes.

One of them, environmental factors, has a great effect on traffic accidents. According to the report of the road traffic safety management corporation, according to the analysis of the pedestrian traffic accidents during the period from 1994 to 2004, the accident rate by weather was the highest with 18.3 persons, the rain (6.6), cloudy (6.4) ), And fine weather (4.9 people). If the blur becomes blurred, the visibility of the driver drops and the driver is connected to the accident.

In general, about 15% of traffic accidents are pedestrian accidents and the mortality rate is about 9%, which is higher than other damages. About 60% of pedestrian damage occurred during the crossing of the road.

Children's traffic accidents generally refer to traffic accidents of the age of 14 or younger. Children 's traffic accidents are the most common cause of total accident deaths. According to the traffic accident statistics data of the National Police Agency in 2007, 13,057 people were injured by car accidents and 9,261 persons by car accident. And 127 of the 202 deaths, 63%, were hit by a car while walking. It is necessary to establish safety during walking to prevent children's traffic accidents.

The number of traffic fatalities among elderly people aged 65 and over has been steadily increasing from 197 in 1974 to 2,238 in 1991 and 2,128 in 2007, and the mortality rate among OECD countries is No. 1. According to the traffic accident statistics data of the National Police Agency in 2007, the number of car accident victims in the elderly was the highest with 14,265 persons, followed by car person accidents with 6,473 persons. Of the total 2,128 patients, 95%, or 45%, were injured in a car while walking. Therefore, it is necessary to secure safety for the elderly traffic accident prevention.

1. KR Patent Registration No. 10-1338124 (Feb. 2. KR Registration Utility Model Bulletin 20-0354926 (June 22, 2004)

The present invention relates to a pedestrian protection system for eliminating the visibility constraint of a driver in a low-illuminance environment for the safety of the pedestrian as described above and for preventing a cause of a traffic accident caused by safety insufficiency of a pedestrian, Safety light is turned on according to the value of the sensor. When the pedestrian signal is a red signal, a warning sound is emitted when the infrared sensor detects it, and a warning light is turned on at the bottom of the pedestrian crossing. To provide a lighting control system for the safety of a pedestrian.

The present disclosure has the following features in order to achieve the above object.

A lighting control system for safety of a pedestrian of the present disclosure includes a support 10 installed at the bottom of a walking path, a traffic signal lamp 11 installed in the support 10 for controlling traffic, A safety light 13 mounted on the support 10 for illuminating the pedestrian from top to bottom when the vehicle signal is red and the illuminance is a set value, A pedestrian alarm 20 installed at the left and right sides of the walking path for warning when a pedestrian is determined to be dangerous, an infrared sensor 21 installed on the pedestrian alarm 20 for detecting a pedestrian, A buzzer sensor (22) installed at a bottom of the walking path to emit a warning sound when the pedestrian signal is red and the pedestrian is detected by the infrared sensor; Warning The safety light 13, the pedestrian alarm 20, the buzzer sensor 22 and the infrared light sensor 21 are received from the vehicle signal lamp 23, the traffic signal lamp 11, the illuminance sensor 12 and the infrared sensor 21, And a micro controller for controlling the warning light (23).

The lighting control system for the safety of the pedestrian as described above is designed to illuminate the pedestrian more reliably in a state where the visibility of the driver is lowered due to low illumination by turning on the safety lighting according to the value of the vehicle signal, the pedestrian signal, Thereby preventing the driver from seeing the pedestrian and leading to an accident.

In addition, when the pedestrian signal is a red signal, the pedestrians are alerted when the pedestrian crosses the road according to the detection of the infrared sensor, so that the pedestrian who is safety insecure can observe the traffic regulations well. .

On the other hand, when the pedestrian signal is a red light, the warning light on the bottom of the pedestrian crossing is turned on, so that the pedestrian who is habituated to see the portable device at all times can concentrate on the portable device and prevent the pedestrian crossing.

As a result, the pedestrian safety is ensured in the walking path and the incidence of traffic accidents is lowered.

1 is a schematic diagram of a lighting control system for the safety of a pedestrian according to the present disclosure;
2 is a block diagram of a lighting control system for the safety of a pedestrian according to the present disclosure;
3 is an illustration of an illumination control system for the safety of a pedestrian according to the present disclosure;
4 is a flow chart of the illuminance sensor driving of the illumination control system for the safety of a pedestrian according to the present disclosure;
5 is a flow chart of infrared sensor and buzzer sensor driving of a lighting control system for the safety of a pedestrian according to the present disclosure;
6 is a reference diagram for an experiment in which a safety light is lit through an illumination sensor in a lighting control system for the safety of a pedestrian according to the present disclosure;
7 is a circuit diagram in which a safety light is turned on through an illumination sensor in a lighting control system for the safety of a pedestrian according to the present disclosure;
8 is a view showing a driving source code of a microcontroller for causing a safety light to be turned on through an illuminance sensor in a lighting control system for safety of a pedestrian according to the present disclosure.
9 is a reference diagram for an experiment in which the warning light is turned on through an infrared sensor in a lighting control system for the safety of a pedestrian according to the present disclosure.
10 is a view for explaining the principle of an infrared sensor in a lighting control system for safety of a pedestrian according to the present disclosure;
11 is a view showing a driving source code of a microcontroller for causing an alarm light to be turned on through an infrared sensor in a lighting control system for safety of a pedestrian according to the present disclosure;
12 is a reference diagram for an experiment in which a buzzer sensor sounds through an infrared sensor in a lighting control system for the safety of a pedestrian according to the present disclosure;
13 is a view showing a driving source code of a microcontroller for causing a buzzer sensor to sound through an infrared sensor in a lighting control system for the safety of a pedestrian according to the present disclosure;
Fig. 14 is a reference diagram for an experiment in which a safety light is turned on through an illuminance sensor according to a vehicle signal in a lighting control system for the safety of a pedestrian according to the present disclosure; Fig.
15 is a view showing a driving source code of a microcontroller for lighting a safety light through an illuminance sensor according to a vehicle signal in a lighting control system for safety of a pedestrian according to the present disclosure;
16 is a reference diagram for an experiment in which the buzzer sensor sounds through the infrared sensor and the warning light is turned on according to the pedestrian signal in the lighting control system for the safety of the pedestrian according to the present disclosure.
17 is a view showing a driving source code of a microcontroller for causing a buzzer sensor to be turned on and an alarm lighting to be turned on through an infrared sensor in accordance with a pedestrian signal in a lighting control system for safety of a pedestrian according to the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the disclosed subject matter and how to accomplish them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the present disclosure is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the disclosure, which is defined by the scope of the claims and is not intended to be limiting. The singular forms herein include plural forms unless the context clearly dictates otherwise. Also, throughout the specification, reference numerals refer to like elements.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present disclosure. The terms used herein are defined in consideration of functions in the embodiments of the present disclosure, which may vary depending on the user, the intention or custom of the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

The lighting control system for the safety of a pedestrian of the present disclosure includes a support 10 installed at the bottom of a walking path, a traffic signal lamp 11 installed in the support 10 for controlling traffic, A light sensor 12 for detecting the illuminance around the gait passage, a safety light 13 for illuminating the pedestrian from the top to the bottom when the vehicle signal is red and the illuminance is a set value, An infrared sensor 21 installed on the pedestrian's alarm 20 for detecting a pedestrian and a pedestrian sensor 20 provided on the pedestrian's alarm 20 for detecting a pedestrian, A buzzer sensor 22 for emitting a warning sound when the signal is red and a pedestrian detected by the infrared sensor, a warning light 23 for illuminating the warning light when the pedestrian signal is red, The illuminance sensor 12 and the infrared sensor 21 It characterized by including the accepted value of the emitter safety light (13), the pedestrian detector 20, the micro-controller (figures not shown) to control the buzzer sensor 22 and the warning light (23).

1 and 2, in the lighting control system for the safety of a pedestrian of the present disclosure, the strut 10 includes a traffic signal lamp 11 for controlling traffic by displaying a traffic signal on an automobile traveling on the road, And road traffic signs that provide various information related to traffic. The traffic lights are usually side-by-side stocks that are divided into vertical and horizontal types depending on how the traffic signal lamp 11 is coupled.

The vehicle traffic light 11 is a traffic light for displaying tricolor signals of green, yellow, and red signals according to the conventional knowledge used in the technical field to which a road traffic related facility belongs. In the lighting control system for the safety of the pedestrian of the present disclosure The safety light 13 of the present disclosure and the infrared sensor 21 of the pedestrian alarm 20 can be changed depending on which signal is sent from the pedestrian signal of the walking path in accordance with the vehicle signal, And so on.

The illuminance sensor 12 is a sensor for measuring intensity and magnitude of light and may be installed at any position of the support 10 if it is installed in the support 10 and can sense illumination around the walkway .

The human eye generally has a sensitivity in the wavelength range of 400 nm to 700 nm and has a peak at about 555 nm. Therefore, the brightness felt by the human eye is the weighted integral of the radiation (radiation energy generated during the unit time of the light source) having various wavelength distributions by the spectral sensitivity of the eye. In this way, the density of a photographic subject (luminous flux: energy of visible light per unit time perceived by the human eye in the radiation) measured based on the sensitivity of the eye is referred to as roughness. Therefore, the illuminance is required to have a sensitivity close to the measurement sensitivity (visual sensitivity) curve. If the photosensitivity of the sensor is significantly different from the visibility (the degree to which the brightness of the visible light changes with wavelength), it is necessary to add a visibility correction filter to the sensor or correct the measured value by the correction coefficient. As the illuminance sensor, various photovoltaic cells can be used, but a phototube is also used for the measurement of very low illuminance.

The safety lighting 13 is installed in a lighting control system for the safety of a pedestrian of the present disclosure so as to reduce a traffic accident in a walking path in an environment with low illumination such as at night or overcast weather, By illuminating the pedestrian from top to bottom, the visibility of the driver is improved so that the pedestrian is more easily visible.

If the safety light (13) is attached to the side of a pedestrian traffic light, the driver can increase the rate of accidents due to the glare caused by the illumination. Based on the result of the experiment, the driver is not illuminated from the side so as not to obstruct the visibility of the driver and the pedestrian It is desirable to install it.

As shown in Fig. 4, the safety light 13 is activated when the illuminance is low according to the illuminance value sensed by the illuminance sensor 12. When the vehicle signal of the automotive traffic light 11 is red, that is, Becomes green and runs when the pedestrian crosses.

In step S1, it is determined whether the illuminance sensor 12 detects an illuminance value around the walking path of 100 lx or less. If the illuminance value is 100 lx or less, step S2, which will be described later, is performed.

In step S2, it is determined whether the vehicle signal is red, that is, a stop signal. If the vehicle signal is a stop signal, step S3, which will be described later, is performed.

In step S3, the safety light 13 is turned on when the illuminance value around the walking path is 100 lx or less and the vehicle signal is a stop signal, and after the turn-on, step S4, which will be described later, is performed.

In step S4, it is determined whether or not the illuminance value around the walking path is detected to be 40 lx or less. If the illuminance value is 40 lx or less, the safety light 13 is turned off and waits. Otherwise, Is maintained in the lighted state.

In the waiting step, the process returns to the start step and returns to step S1, and follows the procedure described above.

1 and 2, in the illumination control system for the safety of a pedestrian of the present disclosure, the pedestrian alarm 20 detects a pedestrian when the pedestrian signal is red when it is determined that the pedestrian is dangerous, , And a warning light is provided on the bottom of the walking path to light a warning lamp, and it is installed on the left and right of the walking path.

The infrared sensor 21 is an apparatus for detecting physical quantities such as temperature, pressure, and intensity of radiation using infrared rays and converting the chemical quantity into electricity capable of signal processing. The infrared sensor 21 senses that the machine emits infrared rays, Of infrared rays, which are mainly used for crime prevention and fire detection.

As shown in FIG. 10, the infrared sensor 21 includes a light emitting portion and a light receiving portion. The light emitting portion emits light of a predetermined frequency, and the emitted infrared rays are reflected by being hitting an object. The light receiving portion receives the light, And the distance to the object. The infrared ray sensor 21 detects an operation such as an automatic door infrared ray sensor, a temperature sensor, a position sensor, a transparent object detection sensor, an infrared ray lamp, an infrared ray heater, a human body detection sensor, According to a preferred embodiment of the present invention, a focus infrared ray sensor for detecting an infrared ray emitted by a human body through a human body sensor is used. Since a detected infrared ray is converted into heat and detected, a filter passing only a specific wavelength band And in other embodiments, a temperature sensor and a motion detection sensor may be used.

The infrared sensor 21 of the pedestrian alarm 20 of one of the pedestrian alarms 20 installed on the left and right of the walking path in the lighting control system for the safety of the pedestrian according to the present disclosure is connected to the other pedestrian alarm 20 The infrared ray sensor 21 of the pedestrian detector 21 is composed of a light receiving unit. When light is emitted from one pedestrian detector 20 having the infrared ray sensor of the light emitting unit, the light emitted from the other pedestrian detector 20, And detects the object when the object enters between the infrared ray sensor of the light emitting part and the infrared ray sensor of the light receiving part of the left and right pedestrian alarm device 20. [

The buzzer sensor 22 is a sensor for generating a warning sound when the pedestrian approaches the range of the infrared sensor 21 when the pedestrian signal is red in the illumination control system for the safety of the pedestrian of the present disclosure, To prevent accidents that may occur when the pedestrian crosses the road without sounding a beep when the pedestrian crosses.

As shown in Fig. 5, the buzzer sensor 22 is activated when a human body is sensed according to a value sensed by the infrared sensor 21, which means that when the pedestrian signal is red, that is, when the pedestrian should not cross do.

In step T1, it is determined whether or not an object, particularly a human body, is sensed by the infrared sensor 21. If a human body is sensed, a next step T2 is performed.

In step T2, it is determined whether the vehicle signal is red, that is, a stop signal. If it is a stop signal, step T3, which will be described later, is performed.

In step T3, the infrared sensor senses the human body, and when the vehicle signal is the stop signal, the buzzer sensor 22 sounds a beep and waits after it rings.

In the standby stage, the process returns to the start stage, and the process returns to step T1 and follows the procedure described above.

When the pedestrian signal is red in the illumination control system for the safety of the pedestrian of the present disclosure, the warning light 23 is installed on the floor of the walking path and lights up, thereby giving a small stimulus to the pedestrian, The pedestrian is prevented from concentrating on the portable device and not crossing the pedestrian signal, thereby ensuring safety.

The pedestrian alarm 20 of the illumination control system for safety of pedestrians of the present disclosure is provided with an infrared sensor 21 and a buzzer sensor 22 in addition to the above- It is possible to provide the pedestrian with the line of sight dispersed by the portable device with information on the pedestrian signal, so that more accurate and safe crossing can be performed.

As shown in Figures 1 and 2, in the illumination control system for the safety of the pedestrians of the present disclosure, the microcontroller is installed together with a signal controller installed around the walkway for control of vehicle signals, pedestrian signals and road traffic The pedestrian sensor 20, the buzzer sensor 22, and the warning light 23 (hereinafter, referred to as " warning light ") are received from the vehicle signal lamp 11, the illuminance sensor 12 and the infrared sensor 21, ).

A microcontroller is a device in which a microprocessor, a memory for using it, and an input device are integrated together. The microcontroller may be referred to as a small computer or a microcomputer because the microcontroller can use devices such as an LED or a sensor.

A microcontroller has a CPU core, memory, and programmable inputs / outputs, which are made up of microprocessors and I / O modules as a single chip. NOR flash, ERPOM, and OTP ROM, and write this machine code to perform the specified function. It has a small amount of SRAM to store the variables and data for machine code execution. Some EEPROMs are built in according to other chips. Microcontrollers are designed for embedded applications and are widely used in embedded systems. If the personal computer (PC) is used in a general operation in which it operates according to various demands, the microcontroller is programmed to perform the function and to perform the specified task, and operates on the device or the like. Therefore, performance is generally lower than PC and shape is different. Think of it as a concept that is different from the PC in terms of the shape and the work of the computer.

Some microcontrollers operate at a low clock rate of less than 4KHz, have an 8-bit ADC / DAC and operate at very low power (several mW to several uW). Most microcontrollers have basic math functions and interrupt functions, and only use a few nW of power in idle state. Because of this feature, it is widely used in electronic devices which must last a long time with a low capacity battery. Other microcontrollers have high-performance computing power and digital signal processing (DSP) capabilities. These microcontrollers also operate with clocks of several GHz, and most of today's smartphones and tablet PCs are equipped with these microcontrollers.

The microcontroller is used to automatically control the product or device. Examples include automotive engine control systems, injectable or portable medical devices, office equipment such as remote controls and printers, power supplies, and toys. A microcontroller that implements functions such as microprocessor, memory, and input / output on a single chip is useful for miniaturizing a product or lowering a unit price, and also for industrial use when making a digitally controlled product. If ADC and DAC are included, they can be used in systems with analog input / output.

The microprocessor is a part of a processing unit (CPU) that performs computation and control, which is a central portion of a microcomputer, in the form of an LSI. In 1971, Intel Corporation of the United States developed a microprocessor Since the introduction of the first processor, the microprocessor has been developed as a representative of the LSI that is aimed at memory and shoulder.

A microprocessor is a processing device in which a computing device such as an arithmetic logic unit, a register, a program counter, an instruction decoder, and a control circuit of a computer, and a control unit are integrated into one small silicon chip. The microprocessor interprets a command stored in the main memory Function.

As a processing device consisting of a very large-scale integrated circuit integrating control devices that provide control signals to each device of a computer, as well as systematically executing operations in a previously established sequence, is a breakthrough in semiconductor technology A remarkable advancement in the ability to integrate 5 million transistors into a single small silicon chip has reduced the size of the computer system, greatly improving system reliability and operating speed, reducing power consumption, and making the price very affordable.

Currently, microprocessors are widely used not only in microcomputers but also in military weapons and home appliances used in general households, as well as in process control and office automation equipment. There are also a number of microprocessors in the market that have been developed by many semiconductor companies and have excellent performance and are very affordable.

According to a preferred embodiment of the present disclosure, the microcontroller is an Arduino UNO Board R3.

Arduino is one of the embedded systems that can take the values from a switch or sensor and control external electronic devices to create environmentally interactive objects.

The Arduino UNO R3 board is a single microcontroller module based on open source code and consists of an AVR-based board. The compiled firmware can be easily uploaded via USB. In addition, Arduino is relatively inexpensive compared to other modules and supports all operating systems such as Windows and Linux.

The illumination control system for the safety of pedestrians of the present disclosure receives the values of the vehicle signal and the pedestrian signal, the illuminance sensor 12 and the infrared sensor 21 at the microcontroller and outputs the safety light 13, the buzzer sensor 22, And controls lighting and operation of the light 23 and a simple signal lamp installed in the pedestrian alarm 20 according to the preferred embodiment.

In addition, the lighting control system for the safety of the pedestrian of the present disclosure can be connected to wireless communication by connecting near-field mobile communication such as Bluetooth, WiFi, Zigbee, and RFID instead of a microcontroller.

3, it is possible to reduce the safety of pedestrians and the incidence of traffic accidents by enabling the driver to easily identify the pedestrian through the lighting of the safety light 13. In this disclosure, the power consumption and maintenance cost And a system for controlling the lighting of the safety light 13 according to the illuminance value around the walking path sensed by the illuminance sensor 12 so as to reduce the illumination light.

Fig. 6 shows [Experiment 1] for a system in which the safety light 13 is turned on via the light intensity sensor 12 in the lighting control system for the safety of a pedestrian according to the present disclosure.

[Experiment 1]

After attaching the breadboard to the illuminance sensor 12, it is connected to the microcontroller board, and the illuminance amount capable of reacting in an appropriate amount with the Arduino program can be set and uploaded to be executed. The illuminance sensor 12 detects the illuminance of the light by the circuit of the header portion and confirms the degree of light.

7 shows a connection circuit diagram between the illuminance sensor 12 and the microcontroller. One end of the illuminance sensor 12 is connected to 5V and the other end is connected to GND. A 10K resistor is connected in the middle of GND and an analog pin is connected . Connect to the digital pin for control of the safety light 13 and to the GND portion of the illuminance sensor 12 to the analog pin.

After a predetermined value is inputted to the illuminance sensor 12 as an experiment, when the illuminance value corresponding to the set value is detected, it is not turned on (left in FIG. 6) (Right in Fig. 6) can be confirmed.

The driving source code between the illuminance sensor 12 and the microcontroller as described above is shown in FIG.

The system in which the safety light 13 is turned on via the light intensity sensor 12 follows the algorithm of Fig. 4 described above.

9 shows [Experiment 2] for a system in which the warning light is turned on via the infrared sensor 21 in the illumination control system for the safety of a pedestrian according to the present disclosure.

[Experiment 2]

One end of the infrared sensor 21 is connected to GND, the other end is connected to Vcc, and the other end of the infrared sensor 21 is connected to GND with a resistance of 220 Ω. The GND of the infrared sensor 21 is connected to GND of the microcontroller board, Vcc to 5V, and the analog pin to A0.

As a result of the experiment, it is confirmed that the infrared sensor 21 is turned on when an object is detected (left side of FIG. 9), and not when the object is not detected (right side of FIG. 9).

The driving source code between the infrared sensor 21 and the microcontroller is as shown in FIG.

Fig. 12 shows [Experiment 3] for a system for causing the buzzer sensor 22 to emit a warning sound through the infrared sensor 21 in the illumination control system for the safety of a pedestrian according to the present disclosure.

[Experiment 3]

After the infrared sensor 21 and the buzzer sensor 22 are attached to the breadboard, one end of the infrared sensor 21 is connected to 5 V and the other end is connected to GND. A resistor of 10 KΩ is connected in the middle of GND, Voltage signal, and determine whether the object is through the ADC value in analog A0. The buzzer sensor 22 is also supplied with a power of 5 V, and a resistor of 220? Is connected so that a warning beep sounds when the infrared sensor 21 receives an object detection value.

As a result of the experiment, the buzzer sensor 22 sounds a warning sound when an object is detected at a predetermined distance (set value) in the infrared sensor 21, and the warning sound does not sound when the distance is far from the set distance value. In FIG. 12, it is not easy to confirm that the alarm sound is emitted by only the buzzer sensor 22, so that it is easy to visually confirm the addition of the lamp.

The drive source code between the infrared sensor 21, the buzzer sensor 22 and the microcontroller as described above is as shown in FIG.

The system for causing the buzzer sensor 22 to emit a warning sound via the infrared sensor 21 follows the algorithm of FIG. 5 described above.

Fig. 14 shows [Experiment 4] for a system in which the safety light 13 is turned on via the light intensity sensor 12 in accordance with the vehicle signal in the lighting control system for the safety of a pedestrian according to the present disclosure.

[Experiment 4]

Attach the green, yellow, and red lamps together to verify that the circuit in [Experiment 1] is lit to match the vehicle signal. Connect a resistor between each lamp and the microcontroller.

When the illuminance value corresponding to the set value is sensed, the illuminance sensor 12 is not turned on (the lower right of FIG. 14) When the signal is green or yellow, it is not turned on (upper left in FIG. 14), and turned on in red (upper right in FIG. 14).

The driving source code between the vehicle signal, the illuminance sensor 12 and the microcontroller as described above is as shown in FIG.

16 shows a system for lighting a warning sound at buzzer sensor 22 and warning light 23 via infrared sensor 21 in accordance with a pedestrian signal in a lighting control system for the safety of a pedestrian according to the present disclosure 5].

[Experiment 5]

The circuits of [Experiment 2] and [Experiment 3] are configured together. Here, it is illuminated according to the pedestrian signal, and the green and red lamps are attached together to confirm that the alarm sounds.

In the experimental result, when the pedestrian signal is green, it is not illuminated and no beep sounds (left in Fig. 16), and when the pedestrian signal is red, when the object is detected by the infrared sensor 21, have.

The driving source code between the pedestrian signal as described above and the infrared sensor 21, the buzzer sensor 22 and the microcontroller is shown in FIG.

The illuminance control system for pedestrian safety of the present invention as described above detects the illuminance around the walking path by the illuminance sensor 12 and detects the illuminance of the vehicle signal lamp 11 when the illuminance value is low depending on weather or at nighttime An infrared sensor 21 is provided which can protect the pedestrian using the walking path by lighting the safety light 13 through the value of the vehicle signal and improving the visibility of the driver and detecting an object on both sides of the walking path When the pedestrian sensor 20 detects an object from the infrared sensor 21 when the pedestrian signal is red according to the value of the pedestrian signal, the buzzer sensor 22 emits a warning sound and the warning light 23) is turned on to prevent unauthorized traversal of the pedestrian, mutual safety between the pedestrian and the driver can be secured, and traffic accidents in the gait passage can be prevented.

The safety light 13, the buzzer sensor 22 and the warning light 23 are not always operated in accordance with a low illuminance value and a vehicle signal and a pedestrian signal through the illuminance sensor 12, So that it is possible to reduce the waste of electric power, and the whole system can be operated with a simple system design, so that the installation cost is not greatly increased.

The foregoing has outlined rather broadly the features and technical advantages of the present disclosure in order that the claims of the invention to be described below may be better understood. Those skilled in the art will appreciate that the present disclosure can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it is to be understood that the present invention is not limited to the above-described specific example, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention. The present invention is not limited to the embodiment of Figs. The scope of the present disclosure is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the appended claims and their equivalents shall be construed as being included within the scope of the present disclosure.

10: Holding
11: Traffic lights for vehicles
12: Light sensor
13: Safety light
20: Pedestrian alarm
21: Infrared sensor
22: buzzer sensor
23: Warning lights

Claims (1)

A strut (10) installed at the bottom of the walking path;
A traffic signal lamp (11) installed in the strut (10) for controlling traffic;
An illuminance sensor (12) installed in the strut (10) for sensing illuminance around the walking path;
A safety light (13) installed in the column (10) and illuminating the pedestrian from top to bottom when the vehicle signal is red and the illuminance is a set value;
A pedestrian detector (20) installed at the left and right of the walking path for warning when a pedestrian is determined to be dangerous;
An infrared sensor (21) installed in the pedestrian alarm (20) for detecting a pedestrian;
A buzzer sensor (22) provided in the pedestrian alarm (20) and emitting a warning sound when the pedestrian signal is red and the pedestrian is detected by the infrared sensor;
A warning light (23) installed at the floor of the walking passage for turning on a warning lamp when the pedestrian signal is red;
The vehicle light sensor 11 receives the values from the illuminance sensor 12 and the infrared sensor 21 and outputs the safety light 13, the pedestrian alarm 20, the buzzer sensor 22, 23. A lighting control system for the safety of pedestrians, comprising:

Images