CN104066243B - Tunnel LED lighting control method - Google Patents

Abstract

The present invention relates to a kind of tunnel LED illumination control system and control method, control system comprises the luminance of outer caves meter, luminance meter in hole, traffic flow acquisition device, speed of vehicle detector, center main control computer, the on-the-spot industrial computer in tunnel, sub-control machine and lighting, lighting is that the LED connected by single loop mode connects and composes, the luminance of outer caves meter and traffic flow acquisition device, speed of vehicle detector, in hole, luminance meter is connected with scene, tunnel industrial computer respectively, the on-the-spot industrial computer in tunnel is connected with center main control computer, the on-the-spot industrial computer in tunnel is connected with sub-control machine, sub-control machine is communicated with lighting by Zigbee wireless network, the present invention ensures that while economize on electricity tunnel intraoral illumination brightness is reasonable, single loop mode is utilized to power for each LED in tunnel, Zigbee radio communication, make power supply reasonable, save the illuminator operation cost that wiring greatly reduces tunnel.

Description

Tunnel LED lighting control method

technical field

The invention belongs to the technical field of tunnel lighting research, in particular to a tunnel LED lighting control system.

Background technique

At present, with the rapid development of highway construction, there are more and more tunnels. The lighting environment in the tunnel will directly affect the convenience of people's travel, and even the safety of life and property. Therefore, tunnel lighting plays a very important role in the traffic environment. While tunnel lighting brings people convenience and quickness, most of them use high-pressure sodium lamps, which consume a lot of power, have high economic costs, and are a serious waste of resources.

Due to its low energy consumption, LED lamps are attracting more and more attention and are widely used. However, if LED light sources are simply used to replace high-pressure sodium lamps, the service life of LED lamps is still limited, and the wiring circuits are complicated and cumbersome, resulting in serious waste. And other issues.

In addition, at present, the commonly used control methods include manual control and sequential control. Manual control needs to rely on manual operation, the degree of automation is low, and the brightness cannot be adjusted in real time, which makes tunnel lighting comfortable and energy-saving. Sequential control is mainly based on time periods. Although its time-segmented control algorithm is simple and easy to operate, this method cannot be adjusted in real time according to changes in the external environment such as weather changes. There are also unreasonable phenomena in the current control method, which is prone to "illumination black holes" or "glare" areas, the comfort of tunnel lighting is not high, the environmental quality is low and operating costs are high, and resources are wasted.

Therefore, it is necessary to study a tunnel LED lighting control system to make the advantages of LED more obvious, and to obtain a more scientific lighting method and more energy-saving.

Contents of the invention

Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a method that can effectively solve the problem of wiring waste caused by control needs in the prior art, provide more lighting modes, improve the visual comfort of tunnel lighting, and maximize Maximum energy-saving tunnel LED lighting control system.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A tunnel LED lighting control system, including a luminance meter outside a cave, a luminance meter inside a cave, a traffic flow collector, a vehicle speed detector, a central control computer, a tunnel site industrial computer, a sub-controller, and a lighting fixture; the lighting fixture is composed of a single Loop mode connected LED light connection structure;

The luminance meter outside the tunnel is connected with the traffic flow collector, speed detector and luminance meter inside the tunnel with the signal input terminal of the industrial computer in the tunnel through data lines;

The signal output terminal of the industrial computer in the tunnel is connected to the signal input terminal of the central control computer through an optical fiber, and the received traffic flow, vehicle speed, and brightness parameters outside the tunnel are transmitted to the central control computer;

The control output terminal of the central main control computer is connected to the control input terminal of the tunnel site industrial computer through optical fiber, and the reasonable brightness value and brightness level of each group of LED lights during the day or night are calculated and sent to the tunnel site industrial computer;

The control output terminal of the industrial computer in the tunnel is connected to the control input terminal of the sub-controller through the RS485 bus, and the received reasonable brightness value is compared with the measured brightness value sent by the brightness meter in the tunnel to determine the brightness of each LED lamp. grade, and send it to the sub-controlling machine;

The sub-controller receives and responds to the brightness level signal of the tunnel site industrial computer, communicates with the lighting fixtures through the Zigbee wireless network, and adjusts the brightness of the LED lights.

The above-mentioned LED lamp is specifically composed of a wireless receiving unit, a control unit, a voltage stabilizing conversion unit, a 220V AC power supply, and a planar light source; the output end of the wireless receiving unit is connected to the input end of the control unit through wires, and the received brightness level The signal is transmitted to the control unit; the control unit is respectively connected to the 220V AC power supply and the voltage stabilization conversion unit through wires, receives the brightness level signal, conducts the 220V AC power supply and the voltage stabilization conversion unit, and sends a PWM signal to the voltage stabilization conversion unit at the same time; The input end of the voltage stabilizing conversion unit is connected to the output end of the control unit through wires, and the output end is connected to the planar light source through wires. It receives the PWM signal sent by the control unit and converts the 220v voltage into a voltage corresponding to the brightness level. For the planar light source powered by.

The above-mentioned planar light source is specifically composed of a substrate, an LED light-emitting chip, an insulating layer and a fluorescent layer. Grooves are processed on the upper surface of the substrate, and LED light-emitting chips connected in series are arranged at the bottom of the grooves. One LED light-emitting chip and the corresponding An insulating layer is covered between adjacent LED light-emitting chips, and a fluorescent layer is filled around the periphery of the LED light-emitting chips.

The present invention also provides a tunnel LED lighting control method, which is composed of the following steps:

1) The outside luminance meter installed outside the tunnel collects the lighting brightness outside the tunnel, and the traffic flow collector and vehicle speed detector installed in the tunnel collect the traffic flow and speed in the tunnel respectively, and the collected outside brightness, The traffic flow and speed parameters are respectively sent to the tunnel site industrial computer;

2) The on-site industrial computer in the tunnel transmits the collected traffic flow, vehicle speed, and brightness parameters outside the tunnel to the central main control computer, and the central main control computer calculates the different time periods of day and night according to the following formula (1) or formula (2). Reasonable brightness values for group LED lights:

Q _{optimized brightness 1} = 0.15×Q _{traffic flow} +0.8×Q _{brightness outside the cave} +0.05×Q _speed type (1)

Q _{Traffic flow} : the parameter of traffic flow, unit: piece;

_{QBrightness outside the cave} : the brightness value outside the cave during the day, unit: LX;

Q _speed : speed parameter, unit: m/s;

Q _{optimized brightness 2} = 0.6 × Q _{traffic flow} + 0.4 × Q _speed (2)

Day and night are bounded by the sunrise and sunset times of the tunnel location;

Find the brightness level corresponding to each group of LED lights according to the calculated reasonable brightness value and each group of address codes, and send the reasonable brightness value and brightness level corresponding to each group of LED lights to the tunnel site industrial computer, and the tunnel site industrial computer according to The address code of each LED lamp in each group sends the brightness level signal to the sub-controller through the RS485 bus;

3) The sub-controller sends the brightness level signal of each LED light sent by the tunnel site industrial computer to the LED light corresponding to the address code through the Zigbee wireless network, and the LED light corresponding to the address code performs brightness adjustment according to the received brightness level signal;

4) The luminance in the tunnel is collected by the luminance meter in the tunnel in real time, and the luminance signal is sent to the industrial computer in the tunnel. For comparison, if the brightness value in the cave is greater than the reasonable brightness value, then the brightness level of the LED lights in the corresponding group will be reduced by one level on the basis of the brightness level sent in step 2); if the brightness value in the cave is smaller than the reasonable brightness value, then the The brightness level of the LED lights in the corresponding group is increased by one level on the basis of the brightness level sent in step 2); then according to the address code of each LED light in each group, send the brightness level signal to the sub-controller through the RS485 bus, and repeat step 3 );

5) Repeat step 1) to step 4) to adjust the brightness again after the preset delay interval, and control the brightness adjustment frequency through the delay interval.

The brightness adjustment in the above step 3) is specifically realized by the following methods:

3.1) The wireless receiving unit of the LED lamp receives the brightness level signal through the Zigbee wireless network and sends the received signal to the control unit;

3.2) The control unit controls the conduction of the 220V AC power supply and the voltage-stabilizing conversion unit, and sends a brightness level signal to the voltage-stabilizing conversion unit;

3.3) The voltage stabilizing conversion unit converts the 220v voltage into a voltage corresponding to the brightness level through voltage conversion, and supplies power to the planar light source according to the received PWM signal.

A tunnel LED lighting control system and control method provided by the present invention adopts the construction of an optical fiber ring network, RS485 bus and Zigbee wireless network to transmit lighting lamp control signals. On-site industrial computer connection, tunnel on-site industrial computer and multiple sub-controllers are connected through RS485 bus for signal transmission, sub-controllers respond quickly to control commands, and communicate wirelessly with LED lighting fixtures through Zigbee wireless network, each level The brightness change is reduced, visually continuous dimming, realizing LED lighting switch control and brightness stepless change, adjustable, while saving electricity, ensuring reasonable lighting brightness in the tunnel, effectively avoiding the "lighting black hole" or "lighting black hole" in the tunnel. Dazzling” area ensures the quality of the lighting environment and lighting comfort in the tunnel. In addition, the present invention uses a single-circuit method to supply power to each LED lamp in the tunnel, and Zigbee wireless communication makes the power supply reasonable, saves wiring and greatly reduces the operating cost of the tunnel lighting system , reasonable structure design, convenient realization, easy operation, high construction quality and efficiency.

Description of drawings

FIG. 1 is a structural block diagram of a tunnel LED lighting control system in Embodiment 1.

FIG. 2 is a structural block diagram of the LED lamp 4 .

FIG. 3 is a schematic structural diagram of the planar light source 43 in FIG. 2 .

FIG. 4 is a flow chart of the tunnel LED lighting control method in Embodiment 1. FIG.

Detailed ways

The technical solutions of the present invention will be further described below with reference to the drawings and specific examples, but the present invention is not limited to the following implementation situations.

As can be seen from the structural block diagram of the tunnel LED lighting control system in Figure 1, the tunnel LED lighting control system of this embodiment is composed of a central main control computer 1, a tunnel field industrial computer 2, a sub-control computer 3, LED lamps 4, and a luminance meter in the tunnel. 5. The luminance meter 6 outside the cave, the traffic flow collector 7 and the vehicle speed detector 8 are connected to form.

The lighting fixtures in this embodiment are respectively equipped with power supply lines for emergency lighting, general lighting and enhanced lighting, and each type of line is composed of a plurality of LED lamps 4 connected in a single loop.

The brightness meter 6 outside the tunnel of this embodiment is installed outside the hole of the tunnel, and a digital camera can be used to obtain the brightness outside the tunnel hole. The traffic flow collector 7, the speed detector 8 and the brightness meter 5 in the tunnel are installed in groups according to the lighting type of the tunnel. In the tunnel, respectively collect the traffic flow, vehicle speed and brightness in the tunnel of each group in the tunnel, and the traffic flow collector 7, the vehicle speed detector 8 and the brightness meter 5 in the tunnel communicate with the signal input end of the tunnel site industrial computer 2 through the data line respectively The signal output end of the tunnel site industrial computer 2 is connected with the signal input end of the central main control machine 1 through an optical fiber, the control input end is connected with the control output end of the central main control machine 1 through an optical fiber, and the control output end is connected with the branch through an RS485 bus. The control input terminal of the controller 3 is connected to transmit the parameters of the brightness outside the tunnel, the traffic flow collector 7 and the vehicle speed detector 8 to the central master controller 1, and the parameters of the traffic flow, vehicle speed, and brightness outside the tunnel are collected by the central master controller 1. Calculate the reasonable brightness value of day or night and find the brightness level corresponding to each group of LED lights 4 according to the reasonable brightness value and corresponding address code, and send the reasonable brightness value and brightness level signal of each group to the tunnel site industrial computer 2 , the tunnel site industrial computer 2 compares the luminance value in the cave sent by the luminance meter 5 with the reasonable luminance value sent by the central main control computer 1, determines the brightness level corresponding to each LED lamp 4 in each group, and sends it to The sub-controlling machine 3, the sub-controlling machine 3 of this embodiment communicates with the lighting fixture through the Zigbee wireless network, and sends the brightness level signal to the corresponding LED lamp 4 through the Zigbee wireless network.

Referring to Fig. 2, the above-mentioned LED lamp 4 is composed of a control unit 41, a voltage stabilizing conversion unit 42, a planar light source 43, a 220V AC power supply 44 and a wireless receiving unit 45; The output end of 45 is connected, and the output end is connected with the input end of the voltage stabilizing conversion unit 42, and is connected on the 220V AC power supply 44 through the wire, and the control unit 41 receives the brightness level signal received by the wireless receiving unit 45, and the 220V AC power supply 44 Conducted with the voltage-stabilizing conversion unit 42, and sends a PWM signal to the voltage-stabilizing conversion unit 42, the output terminal of the voltage-stabilizing conversion unit 42 is connected to the planar light source 43 through wires, receives the PWM signal, and converts the 220v voltage into the corresponding brightness level. 65v voltage, and power the planar light source 43 according to the PWM signal. In this way, the stepless control of the brightness of the LED lamp 4 is realized, and it is ensured that the voltage stabilizing conversion unit 42 is disconnected from the power supply when the LED lamp 4 is not on, and stops working, thereby saving energy.

In order to increase the heat dissipation area of the LED, thereby reducing the junction temperature of the LED lamp and prolonging the service life of the LED lamp, the planar light source 43 of this embodiment is composed of a substrate 431, an insulating layer 432, a fluorescent layer 433 and an LED light-emitting chip 434. , as shown in Figure 3, the substrate 431 is made of an aluminum plate, a groove is processed on the upper surface of the substrate 431, and a graphic circuit is processed at the bottom of the groove, and the LED light-emitting chip 434 is welded on the graphic circuit. An LED light-emitting chip 434 It is connected in series with an adjacent LED light-emitting chip 434 through a wire, and the rest of the bottom of the groove is covered with an insulating layer 432. The phosphor powder glue is poured on the periphery of the series-connected LED light-emitting chip 434 to form a smooth plane to fill the groove. full.

This embodiment also provides a method for realizing LED lighting control in a tunnel using the above-mentioned tunnel LED lighting control system, as shown in FIG. 4 , which is implemented by the following steps:

1) The outside luminance meter 6 arranged outside the tunnel collects the lighting brightness outside the tunnel, and the traffic flow collector 7 and the speed detector 8 arranged in the tunnel collect the traffic flow and speed in the tunnel respectively, and the collected hole External brightness, traffic flow, and vehicle speed parameters are respectively sent to the tunnel site industrial computer 2;

2) The on-site industrial computer 2 of the tunnel transmits the collected traffic flow, vehicle speed and brightness parameters outside the tunnel to the central main control computer 1, and the central main control computer 1 calculates the day or night according to the following formula (1) or formula (2). Reasonable luminance value of each group of LED lamps 4 at night:

Q _{optimized brightness 1} = 0.15×Q _{traffic flow} +0.8×Q _{brightness outside the cave} +0.05×Q _speed type (1)

Q _{Traffic flow} : the parameter of traffic flow, unit: piece;

_{QBrightness outside the cave} : the brightness value outside the cave during the day, unit: LX;

Q _speed : speed parameter, unit: m/s;

Q _{optimized brightness 2} = 0.6 × Q _{traffic flow} + 0.4 × Q _speed (2)

Day and night are bounded by the sunrise and sunset times of the tunnel location;

Find the brightness level corresponding to each group of LED lights 4 according to the calculated reasonable brightness value and each group of address codes, and send the reasonable brightness value and brightness level corresponding to each group of LED lights 4 to the tunnel site industrial computer 2, and then according to each The address code of each LED lamp 4 in the group sends the brightness level signal to the sub-controller 3 through the RS485 bus;

3) The sub-controller 3 sends the brightness level signal of each LED light 4 sent by the tunnel site industrial computer 2 to the LED light 4 corresponding to the address code through the Zigbee wireless network, and the LED light 4 corresponding to the address code is based on the brightness level received. The brightness of the signal is adjusted according to the following method;

3.1) The wireless receiving unit 45 of the LED lamp 4 receives the brightness level signal through the Zigbee wireless network and sends the received signal to the control unit 41;

3.2) The control unit 41 controls and controls the 220V AC power supply 44 to conduct with the voltage-stabilizing conversion unit 42, and sends the PWM signal corresponding to the brightness level signal to the voltage-stabilizing conversion unit 42;

3.3) The voltage stabilization conversion unit 42 converts the 220v voltage into the voltage required by the planar light source 43 through voltage conversion, and supplies power to the planar light source 43 according to the received PWM signal.

4) The luminance meter 5 in the tunnel collects the luminance in the tunnel in real time, and sends the luminance signal to the tunnel on-site industrial computer 2, and the tunnel on-site industrial computer 2 sends the real-time collected luminance value in the tunnel to the central main control computer 1 If the brightness value in the cave is greater than the reasonable brightness value, then the brightness level of the LED lights 4 in the corresponding group will be lowered by one level on the basis of the brightness level sent in step 2); if the brightness value in the cave is less than the reasonable brightness value brightness value, then the brightness level of the corresponding LED lights 4 in the group will be increased by one level on the basis of the brightness level sent in step 2); then according to the address code of each LED light 4 in each group, the brightness level signal will be sent through the RS485 bus to Sub-controller 3, repeat step 3);

5) Repeat step 1) to step 4) to adjust the brightness again after the preset delay interval, and control the brightness adjustment frequency through the delay interval.

Taking the specific Huangshaling Tunnel and Lingdi Tunnel LED lighting demonstration projects as examples, the optimization design of power supply and distribution is carried out, and the intelligent control of on-demand lighting is implemented. Huangshaling Tunnel and Lingdi Tunnel, two-way six-lane, design speed 100km/h, lighting fixtures are arranged in double rows on the left and right sides, Huangshaling Tunnel, left line, ZK103+930～ZK107+909, 3979m long; right line, K103+934 ~K107+951, 4017m long. Lingdi Tunnel, left line, ZK103+041～ZK103+826, 785m long; right line, K103+285～K103+820, 735m long.

Among them, the lighting circuit is designed as 7 circuits, which are:

Basic lighting: 1 circuit for right line and 1 circuit for left line

Enhanced lighting: 1 circuit for the right line, 2 circuits for the left line

Emergency lighting: 1 circuit for right line and 1 circuit for left line

The circuit design is 1/5 of the commonly used common control method, which saves a lot of wiring and power consumption.

The LED lights 4 in the tunnel are arranged as follows:

Among them, the single-loop connection method is used for optimal design, and its total power is 51.7% of the common design, that is, the power is reduced by 48.3%. The power consumption per unit tunnel length of the LED lamp 4 can be reduced by 50.25%.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. All simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technical aspects of the present invention. within the scope of protection of the scheme.

Claims (2)

1. a tunnel LED illumination control method, its tunnel LED illumination control system used comprises luminance meter (5), the luminance of outer caves meter (6), traffic flow acquisition device (7), speed of vehicle detector (8) and lighting in center main control computer (1), the on-the-spot industrial computer (2) in tunnel, sub-control machine (3), hole; Described lighting is that the LED (4) connected by single loop mode connects and composes; The luminance of outer caves meter (6) be arranged on outside tunnel is connected with the signal input part of luminance meter (5) in the traffic flow acquisition device (7) be arranged in tunnel, speed of vehicle detector (8), hole respectively by the on-the-spot industrial computer (2) in data wire and tunnel; The signal output part of the on-the-spot industrial computer (2) in tunnel is connected by the signal input part of optical fiber with center main control computer (1), by the vehicle flowrate of reception, the speed of a motor vehicle, the luminance of outer caves parameter transmission to center main control computer (1); The control output end of center main control computer (1) is connected by the control input end of the on-the-spot industrial computer (2) in optical fiber and tunnel, by calculating, the reasonable brightness value and brightness degree of respectively organizing LED (4) on the daytime obtained or night is sent to the on-the-spot industrial computer (2) in tunnel; The control output end of the on-the-spot industrial computer (2) in tunnel is connected with the control input end of sub-control machine (3) by RS485 bus, in the actual measurement hole send luminance meter (5) in the reasonable brightness value received and hole, brightness value compares, determine the brightness degree of each LED (4), and be sent to sub-control machine (3); Sub-control machine (3) receives the brightness degree signal of the on-the-spot industrial computer (2) in tunnel and responds, and is communicated, carry out brightness regulation to LED (4) by Zigbee wireless network with lighting;

Above-mentioned LED (4) is connected and composed by radio receiving unit (45), control unit (41), voltage stabilizing converting unit (42), 220V AC power (44) and planar light source (43); The output of described radio receiving unit (45) is connected by wire with the input of control unit (41), sends the brightness degree signal received to control unit (41); Described control unit (41) is connected with voltage stabilizing converting unit (42) with 220V AC power (44) respectively by wire, receive brightness degree signal, and by 220V AC power (44) and voltage stabilizing converting unit (42) conducting, send pwm signal to voltage stabilizing converting unit (42) simultaneously; The input of described voltage stabilizing converting unit (42) is connected with the output of control unit (41) by wire, output is connected with planar light source (43) by wire, 220v voltage transitions is also become the voltage corresponding to brightness degree by the pwm signal that reception control unit (41) sends, and powers to planar light source (43);

Above-mentioned planar light source (43) is made up of substrate (431), insulating barrier (432), fluorescence coating (433) and LED luminescence chip (434), groove is processed with at the upper surface of substrate (431), the LED luminescence chip (434) be connected in series is provided with in the bottom of groove, between a LED luminescence chip (434) and an adjacent LED luminescence chip (434), be coated with insulating barrier (432), be filled with fluorescence coating (433) in LED luminescence chip (434) periphery;

It is characterized in that the method is made up of following steps:

1) the luminance of outer caves meter (6) be arranged on outside tunnel gathers the brightness of illumination outside tunnel, be arranged on traffic flow acquisition device (7) in tunnel and speed of vehicle detector (8) simultaneously and gather vehicle flowrate in tunnel and the speed of a motor vehicle respectively, and the luminance of outer caves of collection, vehicle flowrate and speed of a motor vehicle parameter are sent respectively to the on-the-spot industrial computer (2) in tunnel;

2) the on-the-spot industrial computer (2) in tunnel is by the vehicle flowrate of collection, the speed of a motor vehicle and the luminance of outer caves parameter transmission to center main control computer (1), is respectively organized the reasonable brightness value of LED (4) by center main control computer (1) when (1) or formula (2) calculate daytime or night respectively according to the following equation:

Q _{optimize brightness 1}=0.15 × Q _{vehicle flowrate}+ 0.8 × Q _{the luminance of outer caves}+ 0.05 × Q _{the speed of a motor vehicle}formula (1)

Q _{vehicle flowrate}: the parameter of vehicle flowrate, unit: individual;

Q _{the luminance of outer caves}: the brightness value outside daytime hole, unit: LX;

Q _{the speed of a motor vehicle}: speed of a motor vehicle parameter, unit: m/s;

Q _{optimize brightness 2}=0.6 × Q _{vehicle flowrate}+ 0.4 × Q _{the speed of a motor vehicle}formula (2)

Day and night with location, tunnel sun set/raise time for boundary;

The brightness degree often organized corresponding to LED (4) is searched according to the calculating reasonable brightness value of gained and each group address code, and the reasonable brightness value often organized corresponding to LED (4) and brightness degree are sent to the on-the-spot industrial computer (2) in tunnel, according to the address code often organizing interior each LED (4), brightness degree signal is sent to sub-control machine (3) by RS485 bus by the on-the-spot industrial computer (2) in tunnel;

3) the brightness degree signal of each LED (4) that on-the-spot for tunnel industrial computer (2) is sent by Zigbee wireless network by sub-control machine (3) sends to the LED (4) of corresponding address code, and the LED (4) of corresponding address code carries out brightness regulation according to received brightness degree signal;

4) by the brightness in luminance meter (5) Real-time Collection tunnel in the hole in tunnel, and luminance signal is sent to the on-the-spot industrial computer (2) in tunnel, the reasonable brightness value that brightness value in the hole of Real-time Collection and center main control computer (1) send compares by the on-the-spot industrial computer (2) in tunnel, if brightness value is greater than reasonable brightness value in hole, then by LED (4) in correspondence group brightness degree in step 2) the brightness degree basis that sends reduces one-level; If brightness value is less than reasonable brightness value in hole, then by the brightness degree of LED (4) in correspondence group in step 2) the brightness degree basis that sends increases one-level; According to the address code often organizing interior each LED (4), brightness degree signal is sent to sub-control machine (3) by RS485 bus again, repeat step 3);

5) after the time delay interval preset, step 1 is repeated) to step 4) carry out the adjustment of brightness again, brightness regulation frequency is controlled by time delay interval, visually continuous light tuning, realize LED illumination switch control rule and stepless brilliance change, adjustable.

2. tunnel LED illumination control method according to claim 1, is characterized in that: described step 3) in brightness regulation be realized by following methods:

3.1) radio receiving unit (45) of LED (4) receives brightness degree signal by Zigbee wireless network and the signal of reception is sent to control unit (41);

3.2) controlled 220V AC power (44) and voltage stabilizing converting unit (42) conducting by control unit (41), and send brightness degree signal to voltage stabilizing converting unit (42);

3.3) 220v voltage transitions to be become the voltage corresponding to brightness degree by voltage transitions by voltage stabilizing converting unit (42), and powers to planar light source (43) according to received pwm signal.