CN104066243A - Tunnel LED lighting control system and control method - Google Patents

Abstract

The invention relates to a tunnel LED illumination control system and method. The control system comprises an outside-cave luminance meter, an inside-cave luminance meter, a traffic flow collector, a vehicle speed detector, a central main control computer, a tunnel field industrial personal computer, a branch control computer and an illumination lamp. The illumination lamp is formed by connecting LED lamps which are connected in a single-loop mode. The outside-cave luminance meter, the traffic flow collector, the vehicle speed detector and the inside-cave luminance meter are connected with the tunnel field industrial personal computer. The tunnel field industrial personal computer is connected with the central main control computer. The tunnel field industrial personal computer is connected with the branch control computer. The branch control computer is in communication with the illumination lamp through a Zigbee wireless network. By means of the system and the method, it is ensured that illumination brightness inside a tunnel is reasonable while electricity is saved, power is supplied to all the LED lamps in a single-loop method, power supply is made reasonable due to Zigbee wireless communication, wiring is saved, and the operating cost of an illumination system of the tunnel is greatly reduced.

Description

Tunnel LED lighting control system and 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 The connection structure of the LED lights connected in the loop mode;

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 site;

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, specifically, the central main control machine communicates with the tunnel site through the optical fiber ring network Industrial computer connection, the tunnel site industrial computer and multiple sub-controllers are connected through the RS485 bus for signal transmission, the sub-controllers respond quickly to the control commands, and communicate wirelessly with the LED lighting fixtures through the Zigbee wireless network, the brightness of each level The change is reduced, visually continuous dimming, realizing LED lighting switch control and brightness stepless change, adjustable, while saving electricity, ensuring the lighting brightness in the tunnel is reasonable, effectively avoiding the "lighting black hole" or "glare" in the tunnel "area, which 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. The structure design is reasonable, the realization is convenient, the use and operation are simple, and the construction quality and efficiency are high.

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 search for 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 brightness value in the cave sent by the brightness meter 5 in the tunnel with the reasonable brightness value sent by the central control computer 1, determines the brightness level corresponding to each LED lamp 4 in each group, and sends it to the branch office. The control machine 3, the sub-control 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 (5)

1. A tunnel LED lighting control system, including a central main control computer (1), a tunnel site industrial computer (2), a sub-controller (3), a luminance meter inside the cave (5), a luminance meter outside the cave (6), A traffic flow collector (7), a vehicle speed detector (8) and a lighting fixture; it is characterized in that: The lighting fixture is composed of LED lamps (4) connected in a single-circuit manner; The luminance meter (6) outside the tunnel, the traffic flow collector (7), the speed detector (8) and the luminance meter (5) in the tunnel are respectively connected to the tunnel site industrial computer ( 2) connected to the signal input terminal; The signal output end of the tunnel site industrial computer (2) is connected to the signal input end of the central main control machine (1) through an optical fiber, and the received traffic flow, vehicle speed, and brightness parameters outside the tunnel are transmitted to the central main control machine (1); The control output end of the central main control computer (1) is connected to the control input end of the tunnel site industrial computer (2) through an optical fiber, and the reasonable brightness value and brightness level of each group of LED lights (4) during the day or night are calculated and sent to To the tunnel site industrial computer (2); The control output terminal of the tunnel site industrial computer (2) is connected to the control input terminal of the sub-controller (3) through the RS485 bus, and the received reasonable brightness value is compared with the measured brightness value in the tunnel sent by the tunnel brightness meter (5) , determine the brightness level of each LED lamp (4), and send it to the sub-controlling machine (3); The sub-controller (3) receives and responds to the brightness level signal of the tunnel site industrial computer (2), communicates with the lighting fixture through the Zigbee wireless network, and adjusts the brightness of the LED lamp (4). 2. The tunnel LED lighting control system according to claim 1, characterized in that: the LED lamp (4) is composed of a wireless receiving unit (45), a control unit (41), a voltage stabilizing conversion unit (42), a 220V AC power supply (44) and planar light source (43) are connected to form; The output end of the wireless receiving unit (45) is connected to the input end of the control unit (41) through a wire, and the received brightness level signal is transmitted to the control unit (41); The control unit (41) is respectively connected to the 220V AC power supply (44) and the voltage stabilizing conversion unit (42) through wires, receives the brightness level signal, and conducts the 220V AC power supply (44) and the voltage stabilizing conversion unit (42) , while sending a PWM signal to the voltage stabilizing conversion unit (42); The input end of the voltage stabilizing conversion unit (42) is connected to the output end of the control unit (41) through a wire, and the output end is connected to the planar light source (43) through a wire, receives the PWM signal sent by the control unit (41) and The 220v voltage is converted into a voltage corresponding to the brightness level, and supplies power to the planar light source (43). 3. The tunnel LED lighting control system according to claim 2, characterized in that: the planar light source (43) is composed of a substrate (431), an insulating layer (432), a fluorescent layer (433) and an LED light-emitting chip (434). ), a groove is processed on the upper surface of the substrate (431), and LED light-emitting chips (434) connected in series are arranged at the bottom of the groove, and one LED light-emitting chip (434) is connected to an adjacent LED light-emitting chip (434) ) are covered with an insulating layer (432), and the periphery of the LED light-emitting chip (434) is filled with a fluorescent layer (433). 4. A tunnel LED lighting control method, characterized in that it consists of the following steps: 1) The luminance meter (6) installed outside the tunnel collects the lighting brightness outside the tunnel, and the traffic flow collector (7) and vehicle speed detector (8) installed in the tunnel collect the traffic flow and speed in the tunnel respectively , and transmit the collected outside brightness, traffic flow and vehicle speed parameters 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) follows the following formula (1) or formula (2) ) respectively calculate the reasonable brightness value of each group of LED lamps (4) during the day or 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 site; 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), the tunnel site industrial computer (2) sends the brightness level signal to the sub-controller (3) through the RS485 bus according to the address code of each LED lamp (4) in each group; 3) The sub-controller (3) sends the brightness level signal of each LED lamp (4) sent by the tunnel site industrial computer (2) to the LED lamp (4) corresponding to the address code through the Zigbee wireless network, and the LED lamp (4) corresponding to the address code The lamp (4) performs brightness adjustment according to the received brightness level 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) compares the real-time collected luminance value in the tunnel with the Compare the reasonable brightness value sent by the central main control machine (1), if the brightness value in the hole is greater than the reasonable brightness value, then reduce the brightness level of the LED lamp (4) in the corresponding group on the basis of the brightness level sent in step 2) One level; if the brightness value in the cave is less than the reasonable brightness value, then the brightness level of the LED lights (4) in the corresponding group will be increased by one level on the basis of the brightness level sent in step 2); and then according to each LED light in each group ( 4) the address code sends the brightness level signal to the sub-controller (3) through the RS485 bus, and repeats 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. 5. The tunnel LED lighting control method according to claim 4, characterized in that: the brightness adjustment in the step 3) is realized by 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 the conduction of the 220V AC power supply (44) and the voltage stabilizing conversion unit (42), and sends a brightness level signal to the voltage stabilizing conversion unit (42); 3.3) The voltage stabilization conversion unit (42) converts the 220v voltage into a voltage corresponding to the brightness level through voltage conversion, and supplies power to the planar light source (43) according to the received PWM signal.