CN107990243B

CN107990243B - Multi-dimensional composite light distribution street lamp

Info

Publication number: CN107990243B
Application number: CN201711225577.2A
Authority: CN
Inventors: 赵海天
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2017-11-29
Filing date: 2017-11-29
Publication date: 2020-11-06
Anticipated expiration: 2037-11-29
Also published as: CN107990243A

Abstract

The invention is suitable for the technical field of road illumination, and provides a multi-dimensional composite light distribution street lamp which comprises a plurality of illumination subsystems with different dimensions and an intelligent control system. The street lamp is distributed through optics and structures, the function of optical distribution is to project light energy farther as far as possible with minimum loss, and the problem of insufficient illumination of the street lamp on the road center is solved. The function of the structure light distribution is coordinated with the function of optical light distribution, so that the light energy is utilized to the maximum extent with the minimum light effect loss, and the problem of glare of the street lamp is solved. The light source and the control element of each low-lamp-position illumination subsystem are integrated in the same lamp body to form the entity street lamp, so that the materialization and integration of the illumination subsystems are realized. The street lamp has the characteristics of no glare, high lighting effect, self-adaptive control and the like. The landscape lighting device has a landscape lighting function, and can play a role in ensuring traffic safety, improving traffic transportation efficiency, beautifying urban environment and ensuring driving safety.

Description

Multi-dimensional composite light distribution street lamp

Technical Field

The invention belongs to the technical field of road lighting, and particularly relates to a multi-dimensional composite light distribution street lamp.

Background

In road lighting, glare has historically been an important evaluation index. Glare refers to the undesirable range of light intensities in the field of view, with extreme contrast of light intensity in space or time, so as to cause discomfort or visual disturbances that reduce visibility.

CJJ45-2015 clearly defines the glare limiting design and detection index as a threshold increment, and defines an upper limit for glare by taking the threshold increment as the index, so that the upper limit is used as an important factor for evaluating the road lighting quality.

Research has shown that there are many ways to reduce glare, but there is a contradiction: all measures for reducing glare have the cost of the loss of the lighting effect of the street lamp system. Therefore, the essence of reducing glare is to both greatly reduce glare and maintain high light efficiency.

In addition, the threshold increment is defined to be limited to "forward looking glare" which constitutes forward looking disturbance to the driver, but in fact, other glare is present on the road.

We have noted that in highway, town road and tunnel road lighting, in addition to "forward looking glare" which constitutes forward looking disturbance to the driver, there are two other types of glare: glare seen by the driver in the rearview mirror- "rear-view glare" and "side-view glare".

"rear-view glare" refers to glare where the light source of the street light is located behind the driver and strongly interferes with the driver's view of the rearview mirror. Due to the existence of rear-view glare, the rearview mirror of the motor vehicle is bright, and the position and the distance of a rear vehicle cannot be effectively identified.

"side-looking glare" refers to glare where the light source of the street light is located on the side of the driver, creating a strong disturbance to the driver.

Obviously, although the last two phenomena of glare caused by the street lamps on the expressway have no clear design specifications and detection indexes at present, an effective control method has not been found yet. However, the basic road section (especially wide road surface) in the traditional illumination mode does exist, belongs to the direct glare category, and forms strong interference for the driver to drive at night.

In addition, for the street lamp arranged at a low lamp position, the side-view glare and the rear-view glare are often more prominent.

Disclosure of Invention

The invention aims to solve the technical problem of providing a multi-dimensional composite light distribution street lamp which is high in illumination energy efficiency and integrates multiple illumination functions.

Glare characteristic of first-and low-position street lamp

This illumination mode is very sensitive to glare.

The low-light-level street lamp and the high-light-level street lamp have obviously different glare forms and characteristics.

(1) Ultra-small solid angle

In the low light position, the distance from the driver to the front glare light source is far larger than the distance from the light source to the target object, so that the solid angle between the sight line of the driver observing the front road surface and the glare light is extremely small, usually not more than 10, as shown in fig. 1. Therefore, even if the glare light source does not directly irradiate the eyes of the driver, the absolute value of the brightness is not high, but the driver still feels strong glare as long as the brightness of the front glare light source and the brightness of the target object reach a certain contrast. Such glare, in which the main optical axis is not directed to the human eye, is a non-direct glare. According to the threshold increment (glare) calculation, the threshold increment is proportional to the light curtain brightness, which is proportional to the solid angle. Therefore, any reverse lighting component contributes to the threshold increment, and in particular, the reverse lighting component of the lower lamp position contributes more to the threshold increment.

(2) Ultra-small lamp scale

In low light position conditions, street lamps occupy the width of the road, which requires that street lamps cannot be as bulky as high light position street lamps, especially with more severe width restrictions. In the interval of 80-120 m with the most significant glare, the dimension of the street lamp with the low lamp position presented in the eyes of the driver is extremely small due to perspective, and the street lamp is a 'bright spot'. Therefore, the common and effective anti-glare treatment methods applied to the surface of the lens of the street lamp, such as frosting the surface of the lens, adding a light interception grating, asymmetric light distribution and the like, are all ineffective.

Due to the two characteristics, the problem of glare is determined to be a crucial problem for the street lamp with a low lamp position.

(3) Under the condition of low-light-position lighting, a driver usually feels the maximum glare at a distance of 60-120M from the glare light source.

Two, composite light distribution technology

1. Glare decomposition

For the low-light-position lighting mode, the glare of the light source can be decomposed into two parts:

(1) glare in horizontal direction

The horizontal direct light refers to direct light from the front (horizontal direction) of the right street lamp body sensed by the driver, see fig. 2.

(2) Glare in vertical direction

The vertical direct light refers to direct light from below (in the vertical direction) the front street lamp body that the driver feels, see fig. 3.

2. Full cutoff baffle calculation

Comprehensive analysis is carried out on the direct light in the horizontal direction and the vertical direction of the low-position street lamp, and the fact that if the light source is arranged in the horizontal direction, only the direct light in the vertical direction is left to be eliminated due to the fact that the light axis of the street lamp projects downwards is found out; on the contrary, when the light sources are arranged in the vertical direction, only the direct light in the horizontal direction is left to be the glare light source. In fact, no matter the low lamp position is in a reverse or forward lighting mode, the light sources are arranged in the horizontal direction, so that only direct light in the vertical direction needs to be prevented. In fact, this is just the natural advantage of low-position street lamps, and high-position street lamps need to be anti-glare in both horizontal and vertical directions, and the difficulty cannot be overcome in the prior art. Fig. 4 shows a calculation model of the light-shielding shutter.

Setting: l is the length of the baffle; d is the length of the luminous surface of the light source; h is the height of the human eye; n is the height of the lamp body;

s is the distance between a person and a lamp; b is the vertical angle of the light source; a is an included angle between the human sight line and a horizontal line;

the relationship between the length L of the baffle and the length D of the light emitting surface of the light source is as follows:

according to the model calculation, the following results can be obtained:

(1) when the length of the upper baffle plate reaches 360 mm, the net height of the light source is less than 20 mm, the ratio of the net height of the light source to the length of the baffle plate is 1/18, and the ratio is the critical value of the direct glare in the vertical direction.

(2) Under the critical value, the driver moving sight point can not see direct glare and primary reflection glare.

(3) Under the critical value, the effective range of the low lamp position reverse/forward lighting mode can reach 18 meters, namely the high distance ratio is 1/12, which means that when the low lamp position reverse/forward lighting mode is adopted, the effective irradiation distance which can be covered by the lamp height of 1 meter reaches 18 meters, and the distance is far beyond the distance which can be covered by the pure optical light distribution of any high lamp position street lamp and low lamp position street lamp at present.

The invention is realized in such a way that a multi-dimensional composite light distribution street lamp comprises a lamp body, a plurality of lighting subsystems with different dimensions and an intelligent control system, wherein the lighting subsystems and the intelligent control system are arranged on the lamp body; the installation height of the lamp body is lower than 1.2m, and the light projection optical axis of the lighting subsystem is in one or more directions; the intelligent control system controls the on-off and the running power of all the illumination subsystems according to the traffic flow statistics and the sky brightness received by the intelligent control system, and automatically switches the illumination subsystems according to the weather conditions.

Further, the light beam projecting angle of the lighting subsystem is less than 10 degrees, and the height ratio of the light projecting wheelbase is more than 10 degrees.

Further, the lighting subsystem comprises a normal mode and an energy-saving mode, wherein the normal mode is normally full-on in normal light-on time, and the energy-saving mode is dimming based on the normal mode.

Furthermore, the lighting subsystems with different dimensions comprise a low-light-position forward lighting subsystem, the lighting direction of the low-light-position forward lighting subsystem is the same as the driving direction of a lane to be lighted, and the lighting space is the space below the height position of the lamp body and the road surface; the light source emitting surface of the low lamp position forward lighting subsystem is cut off (see fig. 7), and the lower edge of the light source emitting surface is cut off along the light scattering reflecting surface.

Furthermore, the lighting subsystems with different dimensions also comprise a low-light-position reverse lighting subsystem, the irradiation direction of the low-light-position reverse lighting subsystem is opposite to the driving direction of a lane irradiated by the low-light-position reverse lighting subsystem, and the irradiation space is the space below the height position of the lamp body and the road surface; the light source emitting surface of the low-light-position backlighting subsystem is cut off (see fig. 8), and the lower edge of the light source emitting surface is cut off along the light scattering reflecting surface.

Furthermore, the lighting subsystems with different dimensions further comprise a transverse lighting subsystem, wherein the lighting space of the transverse lighting subsystem is the space in front of the lamp body, is closed in normal weather and is only opened in haze weather; the operation mode is full open in haze weather and is automatically converted with the illumination subsystem; the light source of the transverse lighting subsystem is positioned in the hollow transparent lamp body, and the light outlet of the transverse lighting subsystem intercepts light (see fig. 9).

Further, the plurality of lighting subsystems of different dimensions further comprises a warning lighting subsystem, a landscape lighting subsystem, a prompt lighting subsystem and a vertical lighting subsystem;

the light source of the warning illumination subsystem is a white light source, a blue light source, a green light source, a purple light source or a cold light color light source with the color temperature higher than 5000K, and is arranged in a single color or at intervals;

the warning illumination subsystem is a remote control warning flash subsystem, a manual wireless remote control warning button is arranged on the lamp body, and the warning illumination subsystem is started after the warning button is pressed; the warning illumination subsystem is independently controlled and independently powered and is not turned on at ordinary times;

the landscape lighting subsystem projects light towards the lower part of the lamp body;

the prompting illumination subsystem respectively projects light to the upper part and the lower part of the lamp body, the illumination direction of the prompting illumination subsystem is vertical to the road surface, the illumination space is below the lamp body, and the emergent light has at least two different colors;

the irradiation direction of the vertical lighting subsystem is vertical to the road surface, and the irradiation space is below the lamp body and above the road surface; its illumination direction does not intersect with the components of the other illumination subsystems; the running mode is not opened at ordinary times, and the running mode is manually opened only under special requirements.

Further, the multi-dimensional multi-layer illumination street lamp further comprises a smart city subsystem, wherein the smart city subsystem comprises a street lamp operation monitoring subsystem, an urban road monitoring subsystem, an urban environment monitoring subsystem and a street lamp photovoltaic integrated subsystem.

Furthermore, the lamp body upper cover is designed into a ridge shape, and has the snow accumulation prevention function; the partition board in the lamp body is designed into a partition grid type, and has the function of preventing dust accumulation; each electric part of the lamp body is designed to be a waterproof unit reaching IP67, and the lamp body has an independent waterproof function.

Compared with the prior art, the invention has the beneficial effects that: the optical light distribution function of the invention is to project the light energy as far as possible with the minimum loss, and solve the problem of insufficient illumination of the street lamp on the road center. The function of the structural light distribution is coordinated with the function of optical light distribution, so that the light energy is utilized to the maximum extent with the minimum light effect loss, and the problem of glare of the street lamp is solved. The light source and the control element of each low-lamp-position illumination subsystem are integrated in the same lamp body to form the entity street lamp, so that the materialization and integration of the illumination subsystems are realized. The street lamp has the characteristics of no glare, high lighting effect, self-adaptive control and the like. The landscape lighting device has a landscape lighting function, and can play a role in ensuring traffic safety, improving traffic transportation efficiency, beautifying urban environment and ensuring driving safety.

Drawings

FIG. 1 is a schematic solid angle view of low lamp position glare;

FIG. 2 is a schematic view of horizontal direction glare;

FIG. 3 is a schematic view of vertical direction glare;

FIG. 4 is a diagram of a computational model of a light blocking baffle;

FIG. 5 is a schematic view of the optical distribution of the street lamp;

FIG. 6 is a schematic view of a light interception calculation model;

FIG. 7 is a schematic diagram of glare reduction for a low-light-level forward lighting subsystem;

FIG. 8 is a schematic diagram of glare reduction for a low-light-level counter-illumination subsystem;

FIG. 9 is a schematic diagram of glare reduction for a low-light-level lateral illumination subsystem;

FIG. 10 is a bat-type light distribution curve of a typical street lamp and an exploded schematic view thereof;

FIG. 11 is a schematic view showing a light intensity distribution perpendicular to a road axis direction;

FIG. 12 is a diagram showing that the light intensity distribution can be divided into left and right portions;

FIG. 13 is a schematic view of "forward lighting";

FIG. 14 is a schematic "reverse illumination" view;

FIG. 15 is a forward illumination direction illuminance analysis chart;

FIG. 16 is a graph of a reverse direction illumination analysis;

FIG. 17 is a schematic elevation view of a low light position reverse lighting subsystem;

FIG. 18 is a schematic plan view of a low light position reverse illumination subsystem;

FIG. 19 is a schematic view of the road surface covered by the low position reverse lighting;

FIG. 20 is a schematic representation of the reflection characteristics of a rough road surface;

FIG. 21 is a schematic elevation view of a low light position forward lighting subsystem;

FIG. 22 is a schematic plan view of a low light position forward lighting subsystem;

FIG. 23 is a schematic illustration of the effect of vertical illuminance on the brightness of the surface of an object;

FIG. 24 is a vertical gradient profile of spatial illumination;

FIG. 25 is a schematic diagram of a forward illumination subsystem in elevation;

FIG. 26 is a schematic plan view of a forward illumination subsystem;

FIG. 27 is a schematic diagram of a transverse illumination subsystem in elevation;

FIG. 28 is a schematic plan view of a lateral illumination subsystem;

FIG. 29 is a schematic plan view of a remote alarm flash subsystem;

FIG. 30 is a schematic elevation view of a vertical lighting subsystem;

fig. 31 is a block diagram of a control dimming module;

FIG. 32 is a schematic view of the communication fault, cable break, short circuit alarm logging, statistical function architecture;

FIG. 33 is a schematic view showing the illumination in elevation;

fig. 34 to 39 are schematic structural diagrams of lamp bodies of the multi-dimensional composite light distribution street lamp in the embodiment of the invention.

Description of the reference numerals

1. A lamp body top cover plate 2, a forward illumination light outlet 3 and a transverse illumination light outlet

4. Warning illumination light outlet 5, reverse illumination light outlet 6, reverse illumination light barrier

7. Reverse lighting source 8, forward lighting source 9, electronic circuit and equipment bin

10. Positive direction lighting and transverse direction lighting and warning lighting partition plate 11 and anti-dazzle partition plate

12. Cover plate positioning groove 13, top plate fixing screw hole site 14 and back light-transmitting opening

15. Mounting position of lamp body mounting fixing screw hole site 16, transverse and warning lighting source

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment of the invention provides a multi-dimensional composite light distribution street lamp which comprises a lamp body and a plurality of lighting subsystems integrated in the lamp body. The installation height of the lamp body is lower than 1.2m, and the light projection optical axis of the lighting subsystem is in one or more directions; the intelligent control system controls the on-off and running power of all the illumination subsystems according to the traffic flow statistics and the sky brightness conditions received by the intelligent control system, and automatically switches the illumination subsystems according to the weather conditions.

Hereinafter, the respective subsystems of the present embodiment will be described in detail:

function, working principle and design of subsystems

1. With respect to the low light position reverse lighting subsystem:

(1) the working principle is as follows:

a bat-type light distribution is commonly adopted in conventional road lighting, please refer to fig. 10. The light intensity perpendicular to the direction of the road axis in fig. 10 mainly solves the illumination problem of the road width, please refer to fig. 11.

In fig. 10, the light intensity in the same direction of the road axis can be decomposed into left and right light intensities, which respectively correspond to the same illumination direction and the opposite direction (see fig. 12) as the driving direction of the motor vehicle, and the light intensity in the direction dominates the road brightness and the spatial vertical illuminance sensed by the driver, for the following reasons:

the direction of the main optical axis of the light source is the same as the driving direction of the motor vehicle, and is called forward lighting (please refer to fig. 13), and is called reverse lighting (please refer to fig. 14). It can be seen that the bat-type light distribution is combined by two modes of forward illumination and backward illumination of a high lamp position.

a. Observation height, observation distance and observation angle setting

And (3) observing height: as an observer of a vehicle driver, the height from the road surface (working surface) is usually 1.2M (for small cars) to 1.6M (for large cars), and the median value of the observation height is 1.4M (IESNA RP-8-2000 is set to 1.45M);

observation distance: the observation distance is usually 60M to 100M, and the middle value is 80M;

observation angle: general viewing angle

The angle value is 1.2-0.45 deg. (CIE 140-2000 ROADLIGHT CALCULATIONS and "Lighting measuring method" GB 5700-2008; IESNA RP-8-2000 middle value is 1 deg.), the middle value of the observation angle is

b. Comparison of energy efficiency in two-dimensional plane under regular reflection conditions

In regular reflection, since the reflected radiation is related to the incident direction of the light source, the magnitude of the incident angle, and the observation angle, the forward illumination mode and the backward illumination mode have significantly different illumination energy efficiencies. The reflected radiation of the regular reflective road surface is analyzed in a forward lighting mode and a backward lighting mode on a two-dimensional plane.

c. Retinal illuminance in forward illumination mode

Let E_iIs the incident illumination vector of the light source, E_rAs reflected illumination vector, with visual axis V_eThe incident angle of the projected light is alpha, the included angle between the visual axis direction and the reflected illumination vector is beta, and the included angle between the visual axis direction and the working surface is beta

Then

As shown in fig. 15.

The light intensity in the direction can be determined according to the light distribution curve and the light projection angle, and the illuminance Ei formed on the point light source and the calculation point can be obtained according to the cosine law. For regular reflections, in value E_r＝E_i. Following the subscript convention herein¹Retinal illuminance E received in the direction of the line of sight of the driver of the motor vehicle under forward projection illumination_r·eIs shown in formula (1).

d. Retinal illuminance under reverse illumination

Reverse projected illumination is shown in FIG. 16, where

Retina illuminance E received by the sight line direction of the motor vehicle driver under reverse light projection illumination_r·eIs shown in formula (2).

¹Subscript convention: i: incident incidence, E_i: an incident illumination vector; r: reflection, E_r: a reflected illumination vector; e: eye of eye, E_r·e: the component of the reflected illumination in the visual axis direction of the eyes of the driver; t is transversal, E_r·tA lateral component of reflected illumination; v vertical, E_r·vThe vertical component of the reflected illumination.

e. Comparison of energy efficiency under different projection lighting modes

The retina illuminance received by the sight direction of the driver of the motor vehicle is used as an index to compare the energy efficiency under different lighting modes. When the reflectivity of the road surface is unchanged, the retinal illuminance and the retinal brightness are in a direct proportion relation.

f. Comparing the energy efficiency of high and low lamp positions under forward illumination

Obtained by the formula (1):

when α → 0, E_r·e→0。

The physical significance is as follows: the street lamp projects light to the road surface vertically, which is equivalent to 'high lamp position forward lighting'.

When α → 90 °, E_r·e＜0。

The physical significance is as follows: the street lamp projects light to the road surface horizontally, which is equivalent to 'low lamp position forward lighting'.

g. Energy efficiency comparison between high and low lamp positions under reverse illumination

Obtained by the formula (2):

when α → 0, E_r·e→0。

The physical significance is as follows: the street lamp projects light to the road surface vertically, which is equivalent to 'high lamp position reverse lighting',

when α → 90 °, E_r·e→E_r。

The physical significance is as follows: the light source is close to the ground, which is equivalent to 'low light position reverse lighting', and the light radiation quantity E on the observation sight line is_eTo a maximum.

The comparison shows that the energy efficiency of the low-light-level reverse illumination is the highest among the 4 illumination modes by taking the retinal illuminance as a standard.

(2) Subsystem design:

in the reverse lighting subsystem, the light source is installed at a height lower than the visual level of a driver of the motor vehicle, the irradiation direction is opposite to the driving direction of the lane where the light source is located, the irradiation space is the space below the high position of the light and the road surface, no elevation angle scattering exists, and please refer to fig. 17 to 19.

In order to meet the requirement of improving the visibility, the light source of the low-light-level reverse lighting subsystem has the color temperature not higher than 4000K, and the color temperature of the two sides of the road is higher than that of the center of the road.

The operation modes of the low-light-level reverse lighting subsystem comprise a normal mode (normally fully opened in normal light-on time) and an energy-saving mode (dimming on the basis of the normal mode).

2. With respect to the low light position forward lighting subsystem:

(1) the functions are as follows: providing road surface background illumination.

(2) The working principle is as follows:

the reflection of the street lamp on a rough road surface is extremely irregular, and under the condition of the rough road surface, the average brightness value of the road surface measured in the low lamp position forward lighting mode is higher than that of other lighting modes including reverse lighting in four lighting modes of high lamp position reverse lighting, high lamp position forward lighting, low lamp position reverse lighting and low lamp position forward lighting.

The reason why the average brightness value is higher in the low lamp position forward lighting mode than in the backward lighting mode under the condition that all parameters of the lamp are consistent is that the road surface is in a rough-rough or rough-smooth mode, light rays reversely emitted to the road surface are mostly reflected due to the fact that ground particles are thicker and protruded, rough ground particles protrude, non-directional reflection is dominant, cement ground particles are relatively flat, and directional reflection is dominant. As shown in fig. 20.

It can be demonstrated that on rough roads, when the light source illuminates the road ahead at a projection angle close to parallel to the road (low light level) and in the same direction as the direction of traffic (forward lighting), the highest reflection brightness of the road is obtained in the driver's direction of sight.

(3) Subsystem design:

in order to meet the requirement of high-energy-efficiency road surface illumination, a low-light-position forward illumination subsystem is arranged, wherein in the subsystem, the light source is arranged at a height lower than the visual level of a motor vehicle driver, the illumination direction is the same as the driving direction of the lane, the illumination space is the space below the high-light position and the road surface, and no elevation angle scattering exists, please see fig. 21 and 22;

in order to meet the requirement of improving visibility, the light source of the low-light-level reverse lighting subsystem has the color temperature not lower than 4000K, and the color temperature of the center of the road is lower than that of the two sides.

The operation modes of the low-light-level reverse lighting subsystem comprise a normal mode (normally fully opened in normal light-on time) and an energy-saving mode (dimming on the basis of the normal mode). The key problem of the low-lamp-position forward lighting street lamp is to reduce the rear-view glare.

3. Regarding the low light forward lighting subsystem:

(1) the subsystem functions are as follows: providing front space illumination.

(2) The working principle of the subsystems is as follows:

the brightness value of the surface of the object describing the brightness of the foreground cannot be directly measured under the condition of diversity of the surface of the object. In this case, we use the property of positive correlation between the vertical illuminance and the brightness of the object to perform "normalization" indirect conversion on the vertical illuminance and the brightness of the object, so as to obtain data for calculating the visibility of the object: brightness, brightness contrast.

Two-dimensional modeling and analysis of spatial illumination

Please refer to fig. 23, which is a model for providing front space illumination:

E_e＝E_r·cosα·cosβ

E_r: a reflected illumination vector of the light source at the surface of the obstacle;

E_e: a component of the reflected illuminance of the obstacle surface in the driver's eye view axis direction;

α: the incidence angle of the light source, namely the included angle between the road surface and the light projection direction of the light source;

beta: the angle between the reflected illumination vector and the visual axis of the driver's eye.

The basic principle of low-light-position forward illumination is as follows:

when α → 0 ° and β → 0 °, E_e→E_rI.e. the amount of light radiation E in the line of sight_eThe maximum value is obtained; as can be seen from this figure, drivingThe sight line direction of a driver is almost parallel to the road surface, and in order to realize the purpose of identifying a front obstacle, when a light source irradiates a front space with a light projection angle which is nearly parallel to the road surface (low light level) and the irradiation direction which is the same as the driving direction (forward illumination), the vertical illumination of the front space is the highest, and the highest surface brightness of a target object can be obtained in the sight line direction of the driver; the vertical illuminance in the front space is both a major component contributing to the observation and also responsible for the brightness of the object surface.

(3) Subsystem design:

the basic requirements for forward spatial illumination are: the luminance negative contrast and the chrominance contrast between the road background and the front obstacle should be enhanced.

On the other hand, reasonable vertical illuminance distribution gradient is also necessary for high efficiency and energy saving.

The vertical gradient distribution of the illumination of the forward spatial illumination subsystem is shown in fig. 24. The light distribution design of the lamp should also provide adequate illumination over 3 meters in order to facilitate identification of the top contour of a large vehicle. The vertical direction is divided into three illumination zones:

concentrating an irradiation area: the height of the lamp is 0-1.5 m from the road surface, and the lamp mainly has the function of irradiating the road surface and the car;

transition irradiation area: the height of the large vehicle is 1.5-3 meters away from the road surface, and the main function is to irradiate the rear part of the large vehicle body;

marginal illuminated area: the height of the large-scale vehicle is 3-5.3 meters away from the road surface, and the main function is to display the outline of the large-scale vehicle.

The concentrated illumination area is an important area for forward illumination, and is required to have higher vertical illumination, the transitional illumination area is the second order, and the marginal illumination area is the lowest. The specific required values of the illumination of the three illumination zones need to be determined by means of experimental tests.

The requirements for a forward lighting subsystem responsible for space lighting are: the light source with higher color quality (simplified to higher color rendering and non-excessive color temperature) and certain color difference with the background light source (light source irradiating the road surface) is adopted, and the illumination of the provided space has the property of negative contrast of brightness.

The color temperature of a light source of the forward lighting subsystem is higher than that of the backward lighting component but lower than 5500K, the color rendering index is larger than 70, the height is near the sight line of a driver of the motor vehicle, and the irradiation direction is the same as the traffic direction of a lane where the light source is positioned (please refer to figures 25 and 26); the operation modes include a normal mode (full on time within a normal lighting time) and a power saving mode (dimming on a normal mode basis).

4. Transverse lighting subsystem for low lamp position

(1) The subsystem functions are as follows: providing extreme weather lighting.

(2) The working principle of the subsystem is as follows:

the reason why the efficiency of a motor vehicle high beam becomes significantly low in extreme weather conditions such as rain, fog, haze, smoke, etc. is the accumulation of a large amount of aerosol molecular clusters in suspension in the air in front of the motor vehicle. This results in that on the one hand part of the incident light directed to the object in front of the motor vehicle, which has not yet reached the object, is absorbed and scattered by the aerosol molecular mass in the light path, the scattered part of which forms a white curtain, the "white (fog) wall effect", causing the driver to be blinded by the obstacles in front of the road; on the other hand, the light reflected by the incident light reaching the object in front of the motor vehicle is absorbed and scattered by aerosol molecular groups suspended in the air, and the brightness and contrast of the reflected light are reduced, so that the visibility of the obstacle in front of the motor vehicle is greatly reduced.

When the irradiation direction of light is changed, so that the included angle between incident light and the sight line of a driver is approximately vertical, aerosol molecular groups in a suspension shape on a light path irradiating an object in front of a motor vehicle have only one absorption and scattering opportunity, and a bright contour line can be formed at the edge of the object to be displayed in front of the driver in a highlighted manner, so that the phenomenon of 'white (fog) wall' is effectively overcome.

A chain illumination mode embodying this principle is considered as an effective method for solving the problem of the road illumination in the foggy weather.

(3) Subsystem design:

the transverse illumination component subsystem aims at overcoming the 'white wall effect', and has the functions of providing space illumination with the illumination direction nearly perpendicular to the sight line direction of a driver, enhancing the profile contrast between the front space and the front barrier and improving the visibility level of the front barrier under the extreme weather condition.

The requirements for the lateral illumination subsystem are: the light source with high penetrating power (simplified to low color temperature) is adopted, the main optical axis of the light spectrum is larger than 550nm, the irradiation direction of the light source is perpendicular to the driving direction of the lane where the light source is located and parallel to the road surface (see fig. 27 and 28), the irradiation space is the space in front of the lamp, and the light source is closed in normal weather and is opened only in haze weather. The operation mode is for opening fully and with the sub-lighting system linkage in road surface when haze weather.

5. Low-light-level warning illumination subsystem

(1) The subsystem functions are as follows: providing drowsy suppression lighting.

(2) The working principle of the subsystem is as follows:

melanin fading and lethargy feeling of driver

Under the condition of road illumination, if the content of blue light in the radiation spectrum of the illumination light source is high, the pupils of human eyes are greatly contracted, the visual effect is good, the visual effect is clear when a user looks at a target, the hazy feeling is little, and the visibility is good.

The blue component of the spectrum is effective in suppressing melatonin production, with a peak sensitivity of about 465nm in the circadian system. The blue light stimulates nerve knot cells on the retina, promotes the concentration of cortisol in a human body to be increased, inhibits the secretion of fading pigments and enables people to be refreshed. In a low-color-temperature light environment, the blue light component is greatly reduced, the concentration of cortisol in a human body is reduced, and the secretion of melatonin is increased, so that the human feels tired and needs to have a rest.

Through the illumination intervention, the driver fatigue feeling is disturbed, the drowsiness is inhibited, and the driver is enabled to be conscious and focus on the road ahead. The conventional street lamp lighting system has no function of suppressing falling into drowsiness due to visual fatigue at all.

(3) Subsystem design:

light sources are respectively arranged in the forward direction and the reverse direction of the driving direction, and blue light, green light and purple light are respectively generated by a white light source and an acrylic color lens.

6. Low light position warning lighting subsystem

(1) The subsystem functions are as follows: fault warning illumination is provided.

(2) The working principle of the subsystem is as follows:

the method for the multidimensional lighting system to warn the driver of the fault of the vehicle in front is to make the road lamp flash continuously. When a driver drives a vehicle into the emergency stop zone due to vehicle faults and stops stably, the driver can quickly find the manual wireless remote control alarm button on the lamp body of the guardrail on the right side of the road. After the button is pressed down, all street lamps at the position of 100m away from the direction from the button to the coming vehicle send out an alarm to the coming vehicle in a red flashing mode, and the fact that the coming vehicle has a fault in the front is indicated, so that a driver of the coming vehicle is reminded to decelerate.

In principle, it is known that under non-photopic conditions, dynamically flashing objects are much more distinguishable than objects of the same brightness but still. Because about 20 red flashing street lamps are arranged on the left side and the right side of the distance of 100m, the alarm mode of warning the driver of the following motor vehicle in a cluster active flashing mode is more striking than that of a simple triangle alarm mark which is statically placed on the ground, the reliability of identification of the driver of the following motor vehicle is greatly improved, and the safety of driving at night is improved.

(3) Subsystem design:

the remote control alarm flashing subsystem-manual wireless remote control alarm subsystem is located on the right side of the road, the left side and the right side of the distance of 100m are provided with 100 red flashing street lamps, after a manual wireless remote control alarm button on a lamp body is pressed, all the street lamps at the position of the distance of 100m from the button to the coming vehicle send out warnings to the coming vehicle in a red flashing mode, and see fig. 29.

The warning illumination subsystem is independently controlled and independently powered, is not turned on at ordinary times and does not consume power.

7. Vertical lighting subsystem for low light level

(1) The subsystem functions are as follows: rescue indication lighting is provided.

(2) The working principle of the subsystem is as follows:

when an accident occurs on the road surface and rescue is needed, and the accident direction is required to be indicated, a beam of vertical light with strong penetrating power can form a local landmark at the accident site, and the accident direction is clearly indicated in the air.

There are various methods for providing the indicating illumination, the vertical illumination method is simple and reliable, and particularly in haze days and areas with poor mobile phone signals, the vertical illumination becomes the only choice.

(3) Subsystem design:

the vertical lighting subsystem has the function of providing indicating lighting, and when an accident occurs and needs rescue, the accident direction is clearly marked in the air. The light source and the lamp for vertical lighting have the irradiation direction vertical to the road surface, the installation distance is not more than 2Km, the power is not more than 10W, the light distribution is symmetrical, the irradiation space in the irradiation range of 87-93 degrees (please refer to fig. 30) is above the road, the light source has no intersection with other lighting components, and the light color of the light source is single color or is alternate with a plurality of light colors; the operation mode is not opened at ordinary times and is only manually opened under special requirements.

8. Low light position prompting lighting subsystem

(1) The subsystem functions are as follows: and prompting the abnormal road in front.

(2) The working principle of the subsystem is as follows:

the low-light-level street lamp system is arranged on a guardrail or a concrete baffle plate on the side of a road, when the street lamp projects light to the side, the guardrail or the concrete baffle plate can be illuminated, and the reflected light with colors can be obtained by adopting different light source colors.

The special road condition in front can be prompted by utilizing the change of the reflected light with colors on the guard rail or the concrete baffle plate which is measured at the road side. For example, in a normal road, the lamp body radiates blue, green, and purple light upward and downward, respectively, to help the driver to suppress drowsiness and to improve attention. In this case, the driver's front view shows a clear road surface of a middle warm color system and concrete baffles of two sides with gradually changed and cold color systems. When there is a sharp curve or a downhill on the front, the road illumination is not changed, but the reflection of the two concrete baffles is changed from a cold color system to a red or other warm color with higher saturation, so as to prompt the driver: special road conditions appear in the front; when the road returns to the normal road section, the street lamp also returns to the cold color system.

(3) Subsystem design:

the lower part and the upper part of the lamp body are respectively projected with light, so that a driver can conveniently see the lamp body. Blue represents common road conditions, the color of the light is the same as the color of the light for inhibiting the drowsy lighting subsystem, red represents that accidents on the road in front are frequent, orange represents that a steep slope exists in front, and yellow represents that the road is narrowed.

On the bridge railing, the railings with four colors of red, orange, yellow and blue can be seen from a distance, thereby not only prompting special road conditions, but also having the function of landscape illumination.

9. Subsystem for low light level landscape lighting

(1) The subsystem functions are as follows: providing landscape lighting.

(2) The working principle of the subsystem is as follows:

in some special road sections, such as bridges, it is also required that street lamps can provide a landscape lighting function.

(3) Subsystem design:

the irradiation direction of the subsystem faces to the lower part of the lamp body.

10. About intelligent control system

(1) The system functions are as follows: the street lamp state automatic inspection and the illumination mode automatic conversion are provided.

(2) The working principle of the system is as follows:

self-adaptive control of street lamp switch and running power, automatic conversion of normal weather and extreme weather modes-rainfall probe, haze probe and counting probe

(a) Determining street lamp switch and running power

The method comprises the steps of replacing a brightness and time control mode with a brightness and flow control mode, changing a running power conversion mechanism segmented according to time, using a street lamp platform to load a vehicle flow counting system at a proper position of a road, measuring real-time vehicle flow by a counting probe, performing energy-saving control according to the real conditions of sky brightness and vehicle flow, and determining the running power of the street lamp.

Compared with the current energy-saving control mode, the control of brightness and flow is more scientific and more energy-saving.

(b) Automatic switching between normal weather and extreme weather lighting modes.

(3) The illumination mode is self-adaptive:

illumination mode self-adaptation regulation indicates: as long as the test result of the reflectivity of the road surface is input into the control system, the control system can automatically adjust the power distribution between the forward lighting source and the reverse lighting source according to the result.

(4) Self-adaptive conversion of the operation mode:

the street lamp self-adaptive control comprises automatic control of a street lamp switch and running power, and automatic conversion hardware according to weather conditions comprises a rainfall sensor, a haze sensor, a traffic flow sensor, a host, a multi-channel controller and the like. The control object determines the optimal light-on time and the street lamp dimming according to the traffic flow statistics and the sky brightness condition.

Determining the optimal lighting strategy and control measure according to the rainfall and haze conditions

1) Normal day lighting strategy: the visibility is improved, and green and energy-saving effects are achieved.

And (3) control measures: the reverse/forward lighting subsystem is turned on, the transverse lighting subsystem is turned off, the drowsiness suppression lighting subsystem is turned on, and the warning lighting subsystem and the rescue lighting subsystem are activated.

2) Lighting strategy in rainy and snowy days: reducing road surface glare and displaying front obstacles and road contours.

And (3) control measures: turning off the reverse lighting subsystem, turning on the forward/forward lighting subsystem, turning on the transverse lighting subsystem (power is only on 1/2), turning on the drowsiness suppression lighting subsystem, activating the warning lighting subsystem and the rescue lighting subsystem.

3) And the lighting strategy in haze days is as follows: and displaying the front obstacle and the road profile.

And (3) control measures: turning off the reverse lighting subsystem, turning off the forward/forward lighting subsystem, turning on the transverse lighting subsystem (full power on), turning on the drowsiness-suppressing lighting subsystem, and activating the warning lighting subsystem and the rescue lighting subsystem.

(5) The control system comprises:

1) and the system comprises:

hardware: the system comprises an upper computer (a control host), a concentrator, an LED power supply (dimming), an LED guardrail lamp and power distribution equipment;

software: upper computer control software and concentrator software

And (3) overall system control: the upper computer sends out an instruction (with UID), the relevant concentrator receives the instruction, processes the instruction, forwards the instruction to the control node, and controls the power supply to adjust the light and controls the guardrail lamp to perform actions in 4 groups;

section control circuit: the electric control cabinet of each section is provided with a concentrator for controlling the LED guardrail lamp of the section;

and (3) realizing control: each concentrator has a unique identity code UID, and each control node has a unique identity code UID; when the upper computer sends a switching or dimming instruction, the instruction (with UID) is sent to a corresponding concentrator through a GPS/optical fiber, the concentrator decomposes and forwards the instruction to a control node needing to be controlled, and the control node responds to corresponding action according to the instruction;

the realization of zone, group and point control:

area control: each zone is controlled by a concentrator, and all lamps in the zone execute the same instruction as long as a zone control instruction is sent to the concentrator;

group control: the areas can be divided into groups, and the upper computer sends instructions to the groups, and the groups execute the instructions;

point control: the upper computer sends an instruction to a single lamp (UID), and the lamp executes the instruction;

and (3) dimming is realized: the upper computer is provided with dimming instructions (percentage of different values) divided into a plurality of levels, control software is arranged in the LED power supply, and when the control software is connected with the control instructions (such as dimming and lamp switching) sent by the upper computer through the concentrator, the software controls the power supply hardware to execute corresponding commands to realize all instructions including dimming;

and (3) realizing control: 4 groups of relay outputs are designed in the controller, and the controller corresponds to the control of 4 groups of lamplight in the guardrail lamp, so that the all-light functions of single-point grouping and full opening can be realized. See fig. 29 for the dimming control module.

11. Smart city subsystem

(1) The subsystem functions are as follows: a digital terminal platform is provided.

(2) The working principle of the subsystem is as follows:

all signals and instructions collected by the platform are completely accessed to a city big data center, stored in a cloud end and then shared by related functional departments according to the authority. The following departments may be provided with information: 1. street lamp operation management 2, road traffic management 3, city public security and environment management. A management subject: urban traffic monitoring center, public security department, meteorological department, environmental protection department, and urban disaster resistance commanding department.

Air quality measurement

Collecting various traffic pollutants and O₂N、SO₃And PM2.5 and the like, and periodically reporting, early warning and alarming.

1) Weather rainfall measurement

The system comprises an environment temperature and humidity measuring sensor and a rainfall and water depth sensor subsystem, wherein the environment temperature and humidity measuring sensor and the rainfall and water depth sensor subsystem are used for measuring the environment temperature and humidity level, periodically reporting after data are collected, and early warning and alarming are carried out.

2) Automobile charging

When a vehicle cannot be started due to the problem of a storage battery, the 12V power supply can directly provide an ignition power supply for starting the vehicle.

3) WIFI hotspot

At present, WIFI coverage is realized or will be realized on public transport means such as buses and subways in cities, but cannot be covered by a large amount of flowing non-public transport vehicles accounting for more than 90% of the total amount.

4) Noise measurement

Municipal road noise is detected, evidence is obtained, an alarm is given, and recording is carried out in real time.

5) Wind power and photovoltaic integration

The axial flow windmill has small occupied area and stable rotating speed and can be used as a wind driven generator; the monocrystalline silicon battery board has high conversion efficiency, can be arranged on a road guardrail and supplies power to the street lamp together with the axial-flow windmill in a wind-solar complementary mode.

(3) Subsystem design:

1) street lamp operation monitoring subsystem

a) The system has the automatic timing control function: according to the geographic position (longitude and latitude) of a city and the weather statistical conditions of four seasons of the year, a timing schedule for turning on and off is constructed, and the time for operating the lamp on and off every day in a periodic time (including daily time, holiday time, weekend lamp on and off time and the like) is downloaded to each street lamp control terminal for automatic execution; temporary operation control function: when temporary special conditions such as major activities and maintenance inspection are met, a temporary control strategy can be formulated according to needs, and the system performs temporary control according to the temporary strategy; the immediate operation function: in an emergency situation, such as the situation that the weather is suddenly worsened according to the situation, the field operation and maintenance and the like, the street lamp control of the designated area and the road section is carried out through the background.

b) The automatic inspection subsystem of the running state of the street lamp: the system telemeters the voltage and the current value of the street lamp in real time through the power line carrier, finds abnormality, and triggers an alarm signal when the deviation value exceeds a preset threshold range. The system also has a single-point control function, a remote measurement function (telemetering) function and a remote alarm function, and can process alarm of overvoltage and overcurrent; abnormal lamp turning on and off alarm; the lighting rate is lower than the rated value for alarming; the terminal control cabinet is illegally opened to give an alarm; the wire rod door is illegally opened to give an alarm; alarming communication failure; alarming for cable open circuit and short circuit; alarm logging, statistics (see fig. 32).

2) Urban road monitoring subsystem

(a) Traffic road conditions and accidents, security monitoring: the method comprises the steps of carrying out video monitoring and GPS positioning on street lamps, installing an industrial video monitoring camera on the street lamps of the counterweight section, and periodically reporting various working state information of the street lamps. All the video heads can receive the unified operation of the background monitoring system and adopt interactive videos to monitor traffic road conditions and traffic accidents and protect multi-aspect video recording.

(b) Display illumination: the basic principle of display illumination is: in a digital city, an intelligent traffic guidance system needs to provide road traffic information to a driver in time and issue instructions of a traffic guidance department to the driver, and the instructions can be conducted through audio signals or video signals. The display illumination subsystem has the functions of transmitting real-time video signals, displaying image-text information and guiding vehicles to run orderly; the light source and the lamp for displaying illumination are LED or/OLED screens or dot matrixes, and the irradiation direction is obliquely opposite to the driving direction of the lane where the light source and the lamp are located; the traffic command department starts and controls the operation in a remote control mode (see fig. 33).

3) Urban environment monitoring subsystem

(a) Air quality and noise measurement: the method comprises the steps of positioning by utilizing a GPS system, installing air quality and noise measurement sensors at air quality and noise monitoring nodes, testing and collecting relevant data such as air PM2.5, PM5, PM10 and harmful gas content, uploading the data to a 3G/GPRS gateway through a WIFI network, uploading the data to a background monitoring platform system through the 3G/GPRS gateway, and realizing real-time detection, evidence obtaining, alarming and recording of various traffic pollutants and municipal road noise.

(b) Weather rainfall measurement: and an environment temperature and humidity measuring sensor and a rainfall and water depth sensor subsystem are installed at the urban meteorological monitoring node, the environment temperature and humidity level is measured, data is collected and then periodically reported, and early warning and alarming are carried out.

(c) Landscape lighting: the landscape lighting subsystem has the functions of providing landscape lighting under the condition of not influencing driving safety, forming landscape elements at night of a city and shaping a festival atmosphere. The landscape lighting subsystem is mainly applied to bridges and is integrated with the functional lighting subsystem into an integrated lamp. The system operates independently and is controlled by an urban management department independently or controlled by a traffic command department.

(d) Charging the automobile: when a vehicle cannot be started due to the problem of a storage battery, the 12V power supply can directly provide a lighting power supply for starting the vehicle.

(e) WIFI hotspot: at present, WIFI coverage is realized or will be realized on public transport means such as buses and subways in cities, but cannot be covered on a large number of mobile non-public transport vehicles accounting for more than 90% of the total amount. A visible light communication technology platform is established in the middle lamp position municipal road system, and urban road WIFI coverage is achieved.

4) Street lamp photovoltaic integrated subsystem

In the existing road lighting mode, a single lamp power (HID) lamp is 250W, an LED lamp is 150W, the distance between the lamps is 30m to 40m, and the centralized lighting mode is realized. Under centralized lighting conditions, with current photovoltaic technology, it is unreliable to use solar energy entirely as the only power supply. In fact, in order to improve reliability, currently put into practical expressway and town road photovoltaic integrated lighting, a double power supply (220V alternating current and photovoltaic or wind-solar complementary) is basically adopted for supplying power, investment is greatly increased, and the method has demonstration significance and no commercial value and is also an important reason that the current road photovoltaic integrated lighting cannot be comprehensively popularized.

An important result of a multi-dimensional road lighting system is a reduction of the single lamp power to 2-3W and a reduction of the lamp distance to 2-8 meters. Compared with the existing road lighting system, the distributed and miniaturized lighting enables the power of a single lamp of the multidimensional road lighting system to be only 1% to 2% of that of a centralized lighting mode, the area of a photovoltaic cell and a storage component of the single lamp are greatly reduced, the influence range of single lamp faults is greatly reduced, and the power supply reliability can be improved, so that the integrated street lamp using solar energy as a single power supply source is possible, and the street lamp can be designed to be powered by green energy sources such as photovoltaic energy, wind energy and the like.

Optionally, the embodiment may further add an induced lighting subsystem in the lighting street lamp.

12. With respect to the induction lighting subsystem:

the subsystem functions are as follows: providing visual inducement

The working principle of the subsystem is as follows:

in the multi-dimensional road lighting system, the lamp body of the street lamp installed at the low lamp position is orange red. Engineering plastics are adopted as the material of a lamp body of the multi-dimensional road lighting system street lamp, and a proper amount of fluorescent powder is added into a shell; if the metal material is adopted as the material of the lamp body of the multi-dimensional road lighting system street lamp, the fluorescent material is sprayed on the outer surface of the lamp shell.

Subsystem design:

when the lamp is normally powered, the orange lamp body added with the fluorescent powder is brighter, and two rows of bright spots are formed on the roadside, so that the road trend is shown.

When cutting off the power supply suddenly, traditional street lamp will paint black one piece, driving safety greatly reduced. Still can give out light under the car light shines, increase the guidance nature, improve the driving safety when cutting off the power supply suddenly.

Second, lighting subsystem layout

1. Illumination subsystem planar arrangement

And (3) reverse illumination: the first light source is a sealed first LED lamp bead plus a lens;

forward illumination: second light source, sealed second LED lamp bead + lens

An electronic device bin: drive circuit and control device

2. Lighting subsystem facade arrangement

The street lamp mainly comprises a forward lighting light outlet, a transverse lighting light outlet, a warning lighting light outlet, a vertical lighting light outlet, a street lamp positioning screw hole and a driving and controlling equipment bin.

Please refer to fig. 34 to fig. 39, which are views illustrating a structure of a street lamp body according to the present embodiment. The lamp body is provided with a plurality of light sources, light outlets for emitting light, a cover plate 1 with color positioned at the top and a top plate fixing screw hole site 13. The cover plate is also internally provided with a positioning groove 12, a bin groove 9 for fixing electronic circuits and equipment in the lamp body, and a partition plate 11 for preventing mutual interference between light sources and preventing reverse direct-view glare. The light sources shown in the figures include a reverse illumination source 7, a forward illumination source 8, and mounting locations 16 for lateral and warning illumination sources. The light outlet comprises a forward illumination light outlet 2, a transverse illumination light outlet 3, a warning illumination light outlet 4, a reverse illumination light outlet 5 and a reverse illumination light barrier 6. The baffle includes a forward and a transverse illumination, warning illumination baffle 10. The lamp body also shows the back light openings 14 and the lamp body mounting set screw hole sites 15.

In the embodiment, the light source and the control element of each low-light-level illumination subsystem are integrated in one lamp body to form the entity street lamp, so that the materialization and integration of the illumination subsystems are realized. The street lamp has the characteristics of no glare, high lighting effect, self-adaptive control and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A multi-dimensional composite light distribution street lamp is characterized by comprising a lamp body, a plurality of lighting subsystems with different dimensions and an intelligent control system, wherein the lighting subsystems and the intelligent control system are arranged on the lamp body; the installation height of the lamp body is lower than 1.2m, and the light projection optical axis of the lighting subsystem is in one or more directions; the intelligent control system controls the on-off and running power of all the illumination subsystems according to the traffic flow statistics and the sky brightness received by the intelligent control system, and automatically switches the illumination subsystems according to the weather conditions; the lighting subsystems with different dimensions comprise a low-light-position forward lighting subsystem, wherein the light source installation height of the low-light-position forward lighting subsystem is lower than the visual level of a motor vehicle driver, the lighting direction is the same as the driving direction of a lane illuminated by the low-light-position forward lighting subsystem, and the lighting space is the space below the height position of a lamp body and the road surface; the lighting subsystems with different dimensions further comprise a low-light-position forward lighting subsystem, the installation height of a light source of the low-light-position forward lighting subsystem is equivalent to the height of a visual horizon of a motor vehicle driver, and the lighting direction of the low-light-position forward lighting subsystem is the same as the driving direction of a lane illuminated by the low-light-position forward lighting subsystem to illuminate a front space.

2. A multi-dimensional composite light distribution street lamp as set forth in claim 1, wherein the projection beam angle of the illumination subsystem is less than 10 ° and the projection beam wheelbase height ratio is greater than 10.

3. The street light of claim 1, wherein the lighting subsystem comprises a normal mode and a power saving mode, wherein the normal mode is normally full on during normal light on time, and the power saving mode is dimming based on the normal mode.

4. A street light with multi-dimensional composite light distribution as claimed in any one of claims 1 to 3 wherein the light source emitting surface of the low-position forward lighting subsystem is cut off while its lower edge is cut off along the light scattering reflecting surface.

5. The multi-dimensional composite light distribution street lamp as claimed in claim 4, wherein the plurality of lighting subsystems with different dimensions further comprise a low-light-position reverse lighting subsystem, the lighting direction of the low-light-position reverse lighting subsystem is opposite to the driving direction of a lane illuminated by the low-light-position reverse lighting subsystem, and the lighting space is the space below the height position of the lamp body and the road surface; the light emitting surface of the light source of the low lamp position reverse lighting subsystem is cut off, and the lower edge of the light emitting surface is cut off by the light reflecting surface.

6. The multi-dimensional composite light distribution street lamp as claimed in claim 4, wherein the plurality of lighting subsystems with different dimensions further comprise a transverse lighting subsystem, the lighting space of the transverse lighting subsystem is the space in front of the lamp body, and the transverse lighting subsystem is turned off in normal weather and turned on only in haze weather; the operation mode is full open in haze weather and is automatically converted with the illumination subsystem; the light source of the transverse illumination subsystem is positioned in the hollow perspective lamp body, and the light outlet of the transverse illumination subsystem intercepts light.

7. The multi-dimensional composite light distribution street lamp according to claim 4, wherein the plurality of different-dimensional illumination subsystems further comprises a warning illumination subsystem, a landscape illumination subsystem, a prompt illumination subsystem, and a vertical illumination subsystem;

the warning and lighting subsystem is a remote control warning and flashing subsystem, a manual wireless remote control warning button is arranged on the lamp body, and the warning and lighting subsystem is started after the warning button is pressed down; the warning illumination subsystem is independently controlled and independently powered and is not turned on at ordinary times;

8. The multi-dimensional composite light distribution street lamp according to claim 4, wherein the multi-dimensional multi-layer illumination street lamp further comprises a smart city subsystem, and the smart city subsystem comprises a street lamp operation monitoring subsystem, an urban road monitoring subsystem, an urban environment monitoring subsystem and a street lamp photovoltaic integrated subsystem.

9. The multi-dimensional composite light distribution street lamp as claimed in claim 1, wherein the lamp body upper cover is designed into a ridge shape, and has a snow accumulation prevention function; the partition board in the lamp body is designed into a partition grid type, and has the function of preventing dust accumulation; each electric part of the lamp body is designed to be a waterproof unit reaching IP67, and the lamp body has an independent waterproof function.