CN112616227A - Tunnel light adjusting system and method based on pupil change characteristics of driver - Google Patents
Tunnel light adjusting system and method based on pupil change characteristics of driver Download PDFInfo
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- CN112616227A CN112616227A CN202011494429.2A CN202011494429A CN112616227A CN 112616227 A CN112616227 A CN 112616227A CN 202011494429 A CN202011494429 A CN 202011494429A CN 112616227 A CN112616227 A CN 112616227A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention provides a tunnel entrance light adjusting system and method based on pupil area change characteristics of a driver, wherein the tunnel light adjusting system comprises a pupil area collector, a micro control module and a power supply with variable output voltage, the pupil area collector is connected with the micro control module, and the micro control module is connected with the power supply with variable output voltage. Pupil area gathers the pupil photo that the appearance will gather and passes through the program analysis processing that the preset is good, acquires pupil area data and its corresponding power electromotive force value, changes the mains voltage who inserts LED tunnel lamp through miniature control module according to the power electromotive force value and adjusts the illumination luminance of tunnel entrance light to the artificial control main part solves "black hole" effect influence that the driver received when getting into the tunnel in essence, optimizes the visual characteristic that the driver passes through the tunnel, reduces the traffic accident and takes place.
Description
Technical Field
The invention belongs to the technical field of tunnel traffic safety, and particularly relates to a tunnel light adjusting system and method based on pupil change characteristics of a driver.
Background
With the continuous development of tunnel technology, in the construction of modern Chinese highways, tunnels are widely excavated to cross mountains, rivers and undersea so as to shorten the route mileage and improve the road technical standard, so that the highway tunnels become an important traffic infrastructure. However, when a driver drives into a tunnel in the daytime, a "black hole effect" is usually generated visually, that is, in the driving process from a bright environment to a dark environment, a person can have "blindness" for several seconds due to a glare phenomenon caused by an overlarge brightness gradient, and the short time of several seconds can cause a road traffic accident, which seriously affects the driving safety of the road. The invention focuses on adjusting the black hole effect generated visually so as to improve the driving safety and comfort. The method can be further popularized and applied to the prevention and treatment of the white hole effect of the tunnel exit section.
The first prior art is as follows: tunnel light subsection adjusting technology
According to the technology, the tunnel light brightness is adjusted according to the set program and time, so that the smooth transition between the illumination brightness in the tunnel and the brightness of natural light outside the tunnel can be formed, and the visual comfort and the visual continuity of a driver are ensured to a certain extent.
The first prior art has the following defects:
1. according to the technology, the brightness of the tunnel light is mechanically adjusted according to the set program, but when bad weather such as rain, cloudy days and the like is met or the day and night time length is changed due to four-season changes, the tunnel light sectional adjusting technology cannot truly eliminate the 'black hole' effect, and even further aggravates the influence of the 'black hole' effect on a driver.
2. The luminance that driver's pupil adapted is not external illumination luminance, but the illumination luminance in the driver's cabin. The system is only one mechanical adjustment, has great limitation and uncertainty factors, and cannot eliminate the black hole effect.
The second prior art is: direct sunlight introduction illumination
The method transmits the sunlight to the area needing illumination in a mode of multiple reflection, and the system has the advantages of simple structure and low cost.
The second prior art has the following defects:
because sunlight is attenuated in the light guide pipe quickly, the latest technology found by research at present shows that the sunlight loss coefficient in each foot of light guide pipe is 78.5%, so that the system is only suitable for underground spaces with small transmission distance, such as underground garages and the like, and is not suitable for extra-long tunnels.
Disclosure of Invention
In view of the defects of the prior art, the invention discloses a tunnel light adjusting system and method based on the pupil change characteristics of a driver, the pupil area of the driver can be rapidly increased due to the ' black hole ' effect, and a plurality of road traffic accidents are caused by the ' eye blindness ' caused by the ' short time of several seconds, but the time required by the control system to adjust the light brightness is far shorter than the ' eye blindness ' time, so that the pupil area change amplitude of the driver is kept in a reasonable range all the time, and the ' eye blindness ' phenomenon is fundamentally relieved or even eliminated, thereby reducing the traffic accidents.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tunnel light adjusting method based on the pupil change characteristics of a driver is applied to a micro control module and comprises the following steps:
collecting a pupil picture, analyzing and processing the pupil picture through a preset program, and acquiring pupil area data and corresponding power supply electromotive force values thereof;
and sending the acquired pupil area data and the power supply electromotive force value to a micro control module, so that the micro control module controls a power supply with variable output voltage according to the power supply electromotive force value and outputs corresponding power supply voltage to adjust the illumination brightness of the tunnel light.
The tunnel light adjusting method based on the pupil change characteristics of the driver comprises the following steps:
s1: acquiring a pupil picture of a driver by a pupil acquisition instrument, analyzing and processing the pupil picture by a preset program to acquire pupil area data and corresponding power supply electromotive force values thereof, and then sending the pupil area data and the corresponding power supply electromotive force values to a micro control module;
s2: controlling the power supply with variable output voltage to output corresponding power supply voltage according to the value of the power supply electromotive force through the micro control module;
s3: and the lighting brightness of the tunnel lamp light is adjusted by outputting the corresponding power supply voltage through the power supply with the variable output voltage.
The tunnel light adjusting system based on the pupil change characteristics of the driver comprises a pupil acquisition instrument, a miniature control module and a power supply with variable output voltage, wherein the pupil acquisition instrument is connected with the miniature control module, and the miniature control module is connected with the power supply with variable output voltage.
Further, the pupil acquisition instrument is an LEO 25MP-40Tgc large-resolution industrial camera.
Furthermore, the pupil collection instruments are arranged in three groups, and each group of pupil collection instruments are respectively arranged at an approach section in front of the tunnel entrance of the sunlight irradiation area, an entrance section starting point and a transition section starting point after entering the tunnel entrance. Furthermore, the pupil collecting instruments are distributed at three positions and divided into three groups, and the number of the pupil collecting instruments in each group is the same as that of lanes, so that one pupil collecting instrument is arranged right above each lane.
Further, the change of the corresponding power supply electromotive force is adjusted through two-stage monitoring and calculation of the pupil area change.
Furthermore, the micro control module is a single chip microcomputer.
The invention has the following beneficial effects:
1. the invention provides a technology for adjusting the illumination brightness of a tunnel directly based on the pupil area change of a driver, and the pupil data of the driver is captured directly by using a pupil acquisition instrument, so that the illumination brightness of the tunnel is directly adjusted, and the influence of the 'black hole' effect of the tunnel on the driving safety of the driver is more effectively eliminated.
2. The invention relates to an adjusting system for directly adjusting tunnel light based on the pupil of a driver, which can quickly adjust the brightness of the tunnel light after capturing the pupil data of the driver through a pupil acquisition instrument, and can keep the lowest illumination state of the tunnel light illumination when no automobile passes through, thereby playing the role of saving electric energy.
3. The invention follows the design concept of human-oriented, the driver is used as the control subject in the human, vehicle, road and environment system, and is the key factor of the design concept, the invention adjusts the change of the brightness of the tunnel background light by identifying the pupil area of the driver, and is considered on the basis of the safety and comfort of the driver, thereby essentially solving the influence of other factors on the driver.
Drawings
Fig. 1 is a flowchart of a tunnel light adjusting method based on a pupil change characteristic of a driver according to the present invention;
fig. 2 is a tunnel distribution schematic diagram of a pupil collection instrument of a tunnel lighting adjustment system based on a pupil change characteristic of a driver according to the present invention;
FIG. 3 is a front view of pupil collecting instruments distributed in a tunnel at different heights and depths;
fig. 4 is a cross-sectional view of the pupil collecting instrument distributed in the tunnel at different heights and depths.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a light adjusting system for adjusting the brightness of an LED illuminating lamp at the entrance and exit of a tunnel by detecting the change of the area of a pupil, which comprises a pupil acquisition instrument (LEO 25MP-40Tgc large-resolution industrial camera), a micro control module (single chip microcomputer) and a power supply (based on STC89C52 single chip microcomputer) with variable output voltage. The 'black hole' effect can cause people to have 'blindness' for several seconds, which is the short time of several seconds to cause a plurality of road traffic accidents, and the time required by the control system to adjust the light brightness is far shorter than the 'blindness' time, so that the influence of the 'black hole' effect on drivers can be effectively weakened or even eliminated, and the traffic accidents are reduced. Compared with the phenomenon that the difference between the brightness in the vehicle and the natural brightness outside the vehicle causes the driver to be uncomfortable by a light subsection adjusting technology, the method utilizes the pupil acquisition instrument to capture the pupil data of the driver, and calculates the electromotive force value of the power supply in a two-stage adjusting mode, so that the light brightness of the tunnel is directly adjusted, and the uncomfortable influence of the brightness difference between the interior and the exterior of the vehicle on the driver is more accurately and effectively eliminated; in addition, the highest angle of the sun in summer and the lowest angle of the sun in winter are considered to form a sunlight irradiation area in the tunnel, the influence of driving positions and individual difference is considered, in order to improve the accuracy of the system in the aspect of light brightness adjustment, the pupil collecting instruments are distributed at three positions and divided into three groups, the number of the pupil collecting instruments in each group is the same as that of lanes, and one pupil collecting instrument is arranged right above each lane. The three groups of pupil collecting instruments are respectively arranged at an approach section in front of a tunnel entrance, an entrance section starting point and a transition section starting point of a tunnel entrance, are used for measuring the accurate pupil area change rate of a driver, and adjust the corresponding power supply electromotive force value through two-stage change, provide more accurate data for the subsequent light adjustment of the system, can effectively solve the condition that the day and night time length changes due to bad weather or four-season change, and are suitable for tunnels with different lengths.
As shown in fig. 1, the tunnel light adjusting method based on the pupil change characteristics of the driver is applied to a micro control module, and comprises the following steps:
(1) collecting a pupil picture of a driver, analyzing and processing the pupil picture through a preset program, and acquiring pupil area data and corresponding power supply electromotive force values;
(2) and sending the acquired pupil area data and the power supply electromotive force value to a micro control module, so that the micro control module controls a power supply with variable output voltage according to the power supply electromotive force value and outputs corresponding power supply voltage to adjust the illumination brightness of the tunnel light.
The tunnel light adjusting method based on the pupil change characteristics of the driver comprises the following steps:
(1) acquiring a pupil picture of a driver by a pupil acquisition instrument, analyzing and processing the pupil picture by a preset program to acquire pupil area data and a corresponding power supply electromotive force value, and then sending the pupil area data and the corresponding power supply electromotive force value to a micro control module;
(2) controlling the power supply with variable output voltage to output corresponding power supply voltage according to the value of the power supply electromotive force through a micro control module;
(3) and the lighting brightness of the tunnel lamp light is adjusted by outputting the corresponding power supply voltage through the power supply with the variable output voltage.
The tunnel light adjusting system based on the pupil change characteristics of the driver comprises a pupil acquisition instrument, a miniature control module and a power supply with variable output voltage, wherein the pupil acquisition instrument is connected with the miniature control module, and the miniature control module is connected with the power supply with variable output voltage.
In this embodiment, the pupil collecting instrument is an LEO 25MP-40Tgc large-resolution industrial camera; the pupil collection instruments are divided into three groups, the number of the pupil collection instruments in each group is the same as that of lanes, and one pupil collection instrument is arranged right above each lane. The three groups of pupil collectors are respectively arranged at an approach section in front of a tunnel entrance, an entrance section starting point and a transition section starting point of the entrance of the tunnel, are used for measuring the accurate pupil area change rate of a driver, and adjust the corresponding power supply electromotive force value through two-stage change, provide more accurate data for the subsequent light adjustment of the system, and adopt the three pupil collectors arranged at different heights and different horizontal positions to capture the pupil area data of the driver; the micro control module is a single chip microcomputer.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The dark adaptation phenomenon that the driver exists when entering the tunnel. The dark adaptation phenomenon is that when a driver drives from a bright place to a dark place, the visual object is completely invisible or difficult to see within a period of time, and the visual object can be seen due to the gradually increased sensitivity of eyes after a period of time. The time required by dark adaptation is longer, when a driver enters a dark environment from a bright environment, pupils are rapidly expanded, the area of the pupils is enlarged, and the environment is effectively adapted to the change of the environment; the invention is provided according to the change of the pupil area caused by the dark adaptation phenomenon of the environment. Based on the idea, through researching a road tunnel illumination design rule and looking up other papers, a tunnel illumination adjusting system and a method for adjusting tunnel illumination brightness based on pupil area change of a driver are provided, the light adjusting system comprises a pupil acquisition instrument (LEO 25MP-40Tgc large-resolution industrial camera), a micro control module (single chip microcomputer) and a power supply (based on STC89C52 single chip microcomputer), the single chip microcomputer serves as a control system, pupil pictures acquired by the pupil acquisition instrument are analyzed and processed through a preset program to acquire pupil area data and corresponding power supply electromotive force values, and the illumination brightness of tunnel light is adjusted by changing the power supply voltage of a tunnel lamp in a two-stage adjusting mode, as shown in figure 1.
The invention adopts a literature research method and an experimental method, learns the advantages and disadvantages of the current design and the past design by researching the speed limit requirements and the light brightness of the tunnel entrance and the middle section in the highway tunnel lighting design rules (JTG T D702-01-2014), and designs an optimal brightness control scheme suitable for a lighting system at the speed of 60km/h after an improvement scheme is proposed and envisioned.
When a driver drives into the tunnel from a driving vehicle, the pupil area of the driver can be changed, when the brightness outside the tunnel is higher than the brightness in the tunnel, the pupil area can be increased after the driver enters the tunnel, and the brightness in the tunnel is adjusted to be on. The determination is made based on the rate of change of the pupil area, which is expressed as:
and adjusting the illumination brightness of the tunnel lamp light through the change of the pupil area. The tunnel distribution diagram is shown in fig. 2. Our invention scheme is at the tunnel near entrance D1A group of pupil collecting instruments are arranged on the arranged signboard, and when a driver drives to the place D1Where the pupil collecting instrument can shoot the pupil area A1When the vehicle is driven to the starting point of the entrance section, the entrance section D2A second group of cameras is arranged to quickly shoot the pupil area A of the driver2Analyzing the data by a preset program, and processing the data by A1、A2Calculation of R1When the detected pupil change rate R is less than or equal to 15%, the light brightness of the related entrance section or transition section is not adjusted, if the pupil change rate R is more than 15%, the light brightness of the tunnel entrance section is instantly increased according to the preset program on the basis of the original tunnel light brightness by the range of R-15%, and when the vehicle enters the starting point of the transition section, the third group of cameras D3Shoot the pupil area A of the driver3According to R2、R3Calculation of R2And regulating the light brightness of the transition section of the tunnel again according to the method. . Tunnel approach, entrance and transition sections the non-improved parts of the present invention are implemented as required by road tunnel lighting design rules (JTG T D702-01-2014).
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A tunnel light adjusting method based on the pupil change characteristics of a driver is characterized by being applied to a pupil area collector and comprising the following steps:
collecting a pupil picture, analyzing and processing the pupil picture through a preset program, and acquiring pupil area data and corresponding power supply electromotive force values thereof;
and sending the acquired pupil area data and the power supply electromotive force value to a micro control module, so that the micro control module controls a power supply with variable output voltage according to the power supply electromotive force value and outputs corresponding power supply voltage to adjust the illumination brightness of the light at the entrance of the tunnel.
2. The tunnel light adjusting method based on the pupil change characteristics of the driver is characterized by comprising the following steps of:
s1: acquiring a pupil picture of a driver by a pupil acquisition instrument, analyzing and processing the pupil picture by a preset program to acquire pupil area data and corresponding power supply electromotive force values thereof, and then sending the pupil area data and the corresponding power supply electromotive force values to a micro control module;
s2: controlling the power supply with variable output voltage to output corresponding power supply voltage according to the value of the power supply electromotive force through the micro control module;
s3: and the lighting brightness of the tunnel lamp light is adjusted by outputting the corresponding power supply voltage through the power supply with the variable output voltage.
3. The tunnel light adjusting system based on the pupil change characteristics of the driver is characterized by comprising a pupil acquisition instrument, a micro control module and a power supply with variable output voltage, wherein the pupil acquisition instrument is connected with the micro control module, and the micro control module is connected with the power supply with variable output voltage.
4. The tunnel light adjustment system of claim 3, wherein the pupil collection device is a LEO 25MP-40Tgc high resolution industrial camera.
5. The tunnel light adjusting system of claim 4, wherein the pupil collectors are arranged in three groups, and each group of pupil collectors are respectively arranged at the tunnel entrance approach section, the tunnel entrance section starting point and the transition section starting point of the sunlight irradiation area.
6. A tunnel light adjusting system as recited in claim 5, wherein each group of pupil collectors is divided into three groups, and the number of pupil collectors in each group is the same as the number of lanes, so as to ensure that there is one pupil collector directly above each lane.
7. The tunnel lighting adjustment system of claim 6, wherein the micro control module is a single chip microcomputer.
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| CN202011494429.2A CN112616227B (en) | 2020-12-17 | 2020-12-17 | Tunnel lamplight adjusting system and method based on pupil change characteristics of driver |
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| CN114117726A (en) * | 2021-09-29 | 2022-03-01 | 吉林大学 | Method for setting road lamps at lighting entrance transition section of road intersection |
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