CN112616227B - Tunnel lamplight adjusting system and method based on pupil change characteristics of driver - Google Patents
Tunnel lamplight adjusting system and method based on pupil change characteristics of driver Download PDFInfo
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- CN112616227B CN112616227B CN202011494429.2A CN202011494429A CN112616227B CN 112616227 B CN112616227 B CN 112616227B CN 202011494429 A CN202011494429 A CN 202011494429A CN 112616227 B CN112616227 B CN 112616227B
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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 lamplight adjusting system and a tunnel entrance lamplight adjusting method based on a pupil area change characteristic of a driver, wherein the tunnel lamplight adjusting system comprises a pupil area acquisition instrument, a micro control module and a power supply with variable output voltage, the pupil area acquisition instrument is connected with the micro control module, and the micro control module is connected with the power supply with variable output voltage. The pupil area acquisition instrument analyzes and processes the acquired pupil photo through a preset program to acquire pupil area data and a corresponding power supply electromotive force value, and the micro control module changes the power supply voltage of the LED tunnel lamp according to the power supply electromotive force value to adjust the illumination brightness of the light at the entrance of the tunnel so as to manually control the main body, thereby essentially solving the influence of black hole effect when a driver enters the tunnel, optimizing the visual characteristic of the driver passing through the tunnel and reducing traffic accidents.
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 modern China highway construction, tunnel excavation modes are widely adopted to traverse mountain, river and seabed so as to shorten line mileage and improve road technical standards, so that highway tunnel becomes an important traffic infrastructure. However, when a driver drives into a tunnel in daytime, a black hole effect is usually generated visually, namely, in the process of driving from a bright environment to a dark environment, a glare phenomenon caused by overlarge brightness gradient can cause people to appear 'blindness' for a few seconds, and road traffic accidents can be caused in a short time for a few seconds, so that the driving safety of a road is seriously affected. The invention focuses on adjusting the black hole effect generated in vision 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 at the tunnel exit section.
The first prior art is: tunnel lamplight sectional adjusting technology
According to the technology, tunnel light brightness adjustment is carried out according to a set program and time, so that gentle transition is formed between the illumination brightness in the tunnel and the brightness of natural light outside the tunnel, and visual comfort and visual continuity of a driver are ensured to a certain extent.
Drawbacks of the first prior art:
1. the technology is to mechanically adjust the brightness of tunnel light according to the set program and time, but when the tunnel light meets bad weather such as rainy days and cloudy days or the condition of changing the time length of day and night caused by the change of four seasons, 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 driver is in the car in the driving process, the luminance in the car and the luminance outside the car have a certain difference, and the luminance adapted to the pupils of the driver is not the external illumination luminance but the illumination luminance in the cab. The system is only mechanically regulated, has great limitation and uncertainty, and cannot eliminate the black hole effect.
And the second prior art is as follows: direct introduction of solar illumination
The method transmits sunlight to the area to be illuminated in a multi-reflection mode, and the system has the advantages of simple structure and low cost.
Drawbacks of the second prior art:
as the sunlight decays fast in the light guide tube, the latest technology at present is found that the loss coefficient of the sunlight in each foot of light guide tube is 78.5 percent, and therefore, 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 a tunnel light adjusting method based on pupil change characteristics of a driver, which can lead to rapid increase of the pupil area of the driver due to a black hole effect, and the occurrence of 'eye blindness' of a few seconds often causes various road traffic accidents in a short time, while the time required by the control system for adjusting the light brightness is far less 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 relieved or even eliminated from the root, thereby reducing the traffic accidents.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
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:
collecting pupil photographs, analyzing and processing the pupil photographs through a preset program, and obtaining pupil area data and corresponding power supply electromotive force values;
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 the 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 tunnel lamplight.
The tunnel light adjusting method based on the pupil change characteristics of the driver comprises the following steps:
s1: the pupil photo of the driver is acquired through a pupil acquisition instrument, the pupil photo is analyzed and processed through a preset program, pupil area data and corresponding power supply electromotive force values are obtained, and then the pupil area data and the corresponding power supply electromotive force values are sent to a micro control module;
s2: controlling the power supply output of the variable output voltage to correspond to the power supply voltage according to the power supply electromotive force value through the micro control module;
s3: and the illumination brightness of the tunnel lamplight 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 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.
Further, the pupil collector is an LEO 25MP-40Tgc large-resolution industrial camera.
Further, the pupil collectors are three groups, and each group of pupil collectors is respectively arranged at an approaching section before the entrance of the tunnel in the sunlight irradiation area, an entrance section starting point after entering the tunnel entrance and a transition section starting point. Furthermore, the pupil collectors are distributed at three positions and are divided into three groups, and the number of the pupil collectors in each group is the same as the number of lanes, so that one pupil collector is arranged right above each lane.
Further, through two-stage monitoring and calculation of pupil area change, the corresponding change of power supply electromotive force is adjusted.
Further, the micro control module is a singlechip.
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, which directly utilizes a pupil acquisition instrument to capture the pupil data of the driver, thereby directly adjusting the light brightness of the tunnel and more effectively eliminating the influence of the black hole effect of the tunnel on the driving safety of the driver.
2. The invention relates to a regulating system for directly regulating tunnel light based on the pupils of a driver, which can quickly regulate the brightness of the tunnel light after the pupils of the driver are captured by a pupil acquisition instrument, and can keep the lowest illumination state of the tunnel light illumination when no automobile passes through, thereby playing a role in saving electric energy.
3. The invention follows the design concept based on people, the driver is used as a control main body in the system of people, vehicles, roads and environment, and is a key factor of the design concept.
Drawings
FIG. 1 is a flow chart of a tunnel light adjustment method based on the pupil variation characteristics of a driver according to the present invention;
fig. 2 is a schematic diagram of tunnel distribution of a pupil collector of a tunnel light adjusting system based on pupil variation characteristics of a driver;
FIG. 3 is a front view of pupil gathering instruments distributed at different heights and depths in a tunnel;
fig. 4 is a cross-sectional view of pupil collecting apparatus with pupil collecting apparatus distributed at different heights and depths in a tunnel.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention adopts a light adjusting system for detecting pupil area change to adjust the brightness of an LED illuminating lamp at a tunnel entrance and an exit, and the light adjusting system comprises a pupil acquisition instrument (LEO 25MP-40Tgc large-resolution industrial camera), a micro control module (a singlechip) and a power supply (based on an STC89C52 singlechip) with variable output voltage. Because the 'black hole' effect can lead people to be 'blind' in a few seconds, a plurality of road traffic accidents are often caused by the short time of a few seconds, and the time required by the control system for adjusting the light brightness is far less than the 'blind' time, the influence of the 'black hole' effect on a driver can be effectively weakened or even eliminated, and the traffic accidents are reduced. Compared with the technology of light segmentation adjustment, the invention 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 adjustment mode so as to directly adjust the light brightness of the tunnel and more accurately and effectively eliminate the uncomfortable influence of the difference of the brightness between the interior and the exterior of the vehicle on the driver; 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 a tunnel, and the influence of driving positions and individual differences is considered, so that the accuracy of the system in the aspect of light brightness adjustment is improved, pupil collectors are distributed at three positions and divided into three groups, the number of pupil collectors in each group is the same as the number of lanes, and one pupil collector is ensured to be arranged right above each lane. The three groups of pupil collectors are respectively arranged at the approaching section in front of the tunnel entrance, the entrance section starting point and the transition section starting point which enter the 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, so that more accurate data is provided for the subsequent light adjustment of the system, the condition that the day and night time duration is changed due to bad weather or four-season change can be effectively solved, and the invention is 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 photo of a driver, analyzing and processing the pupil photo 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 the 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 tunnel lamplight.
The tunnel light adjusting method based on the pupil change characteristics of the driver comprises the following steps:
(1) The pupil photo of the driver is acquired through a pupil acquisition instrument, the pupil photo is analyzed and processed through a preset program, pupil area data and corresponding power supply electromotive force values are obtained, and then the pupil area data and the corresponding power supply electromotive force values are sent to a micro control module;
(2) The micro control module is used for controlling the power supply output of the variable output voltage according to the power supply electromotive force value to output corresponding power supply voltage;
(3) And the illumination brightness of the tunnel lamplight 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 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.
In the embodiment, the pupil collector is an LEO 25MP-40Tgc large-resolution industrial camera; the pupil collectors are divided into three groups, and the number of the pupil collectors in each group is the same as the number of lanes, so that one pupil collector is arranged right above each lane. The three groups of pupil collectors are respectively arranged at the approaching section in front of the tunnel entrance, the entrance section starting point and the transition section starting point which enter the tunnel entrance, are used for measuring the accurate pupil area change rate of the driver, and are used for adjusting the corresponding power electromotive force value through two-stage change, providing more accurate data for the subsequent light adjustment of the system, and adopting the steps of arranging the three pupil collectors at different horizontal positions at different heights and capturing the pupil area data of the driver; the micro control module is a singlechip.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Dark adaptation phenomenon that the driver has when entering the tunnel. Dark adaptation phenomenon is when the driver drives from a bright place to a dark place, the visual object is not seen at all or is difficult to see for a period of time, and after a period of time, the visual object can be seen due to the gradual rise of the sensitivity of eyes. The time required for dark adaptation is long, when a driver enters a dark environment from a bright environment, the pupil is rapidly dilated, the area of the pupil is enlarged, and the change of the environment is effectively adapted; the invention is proposed according to the change of pupil area caused by the phenomenon of dark adaptation of the environment. Based on the idea, through researching the 'highway tunnel illumination design rules' and consulting other papers, a tunnel illumination adjusting system and a method for adjusting tunnel illumination brightness based on the change of pupil area 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 (singlechip), a power supply with variable output voltage (based on STC89C52 singlechip), the singlechip is used as a control system, pupil photos acquired by the pupil acquisition instrument are analyzed and processed through a preset program to acquire pupil area data and corresponding power electromotive force values thereof, and the illumination brightness of tunnel light is adjusted by changing the power voltage of an access tunnel lamp in a two-stage adjusting mode, as shown in figure 1.
The invention adopts a literature research method and an experimental method, and the invention obtains the advantages and disadvantages of the present design and the past design by researching the regulations on the speed limit requirements and the lamp brightness of tunnel entrance and middle section given in the highway tunnel illumination design rule (JTG T D70 2-01-2014), and designs the optimal brightness control scheme suitable for an illumination system according to the speed of 60km/h after the improvement scheme is expected.
When the driver drives into the tunnel from driving, the pupil area of the driver can change, and when the brightness outside the tunnel is higher than the brightness inside the tunnel, the driver enters the tunnelAfter that, the pupil area will increase and the brightness in the hole should be adjusted to brightness. Judging according to the change rate of the pupil area, wherein the change rate is expressed as follows:
the illumination brightness of the tunnel lamplight is adjusted through the change of the pupil area. A schematic of the tunnel distribution is shown in figure 2. Our inventive solution is to locate the tunnel close to the entrance point D 1 A group of pupil collecting instruments are placed on the arranged signboard, and when a driver drives to drive to D 1 Pupil area A is shot by pupil acquisition instrument 1 When the vehicle arrives at the start point of the entrance section, the vehicle enters the entrance section D 2 The second group of cameras are placed to rapidly shoot the pupil area A of the driver 2 Analyzing the photographed data by a preset program, and passing through A 1 、A 2 Calculating R 1 When the detected pupil change rate R is less than or equal to 15%, the light brightness of the relevant entrance section or transition section is not adjusted, if the detected pupil change rate R is more than 15%, the light brightness of the entrance section of the tunnel is instantaneously increased according to the preset program and the range of R-15% on the basis of the original light brightness of the tunnel, and when a vehicle drives into the starting point of the transition section, a third group of cameras D 3 The pupil area A of the driver is shot 3 According to R 2 、R 3 Calculating R 2 And (5) adjusting the light brightness of the tunnel transition section again according to the method. . The tunnel approach section, entrance section and transition Duan Ben, which are not part of the invention related to improvement, are all implemented as required by the highway tunnel lighting design rules (JTG T D70 2-01-2014).
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and 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 described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (5)
1. The tunnel light adjusting method based on the pupil change characteristics of the driver is characterized by being applied to a pupil area acquisition instrument and comprising the following steps of:
collecting a pupil photo, analyzing and processing the pupil photo through a preset program, and acquiring pupil area data and corresponding power supply electromotive force values, wherein the corresponding power supply electromotive force values are judged according to the pupil area change rate;
the obtained pupil area data and the power supply electromotive force value are sent 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 to output corresponding power supply voltage to adjust the illumination brightness of the lamplight at the entrance of the tunnel;
s1: collecting pupil photos of a driver through pupil area collectors respectively arranged at the approaching section in front of the tunnel entrance, the entrance section starting point entering the tunnel entrance and the transition section starting point, processing the pupil photos through a preset self-programming program, and judging the electromotive force value of the corresponding power supply according to the pupil area change rate; then pupil area data and corresponding power supply electromotive force values are sent to a micro control module;
s2: controlling the power supply output of the variable output voltage to correspond to the power supply voltage according to the power supply electromotive force value through the micro control module;
s3: and the illumination brightness of the tunnel lamplight is adjusted by outputting the corresponding power supply voltage through the power supply with the variable output voltage.
2. The tunnel light regulating system of the tunnel light regulating method based on the pupil variation characteristics of the driver according to claim 1, comprising a pupil collector, a micro control module and a power supply with variable output voltage, wherein the pupil collector is connected with the micro control module, and the micro control module is connected with the power supply with variable output voltage.
3. The tunnel light regulating system of claim 2, wherein the pupil harvester is a LEO 25MP-40Tgc large resolution industrial camera.
4. A tunnel light regulating system according to claim 3, 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 that one pupil collector is located right above each lane.
5. The tunnel light regulating system of claim 4, wherein the micro control module is a single chip microcomputer.
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| CN114117726B (en) * | 2021-09-29 | 2024-05-10 | 吉林大学 | Road intersection illumination entrance transition section street lamp setting method |
| CN113795069B (en) * | 2021-11-18 | 2022-02-11 | 深圳市奥新科技有限公司 | Tunnel illumination control method and tunnel illumination system |
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