CN203523114U - A road lighting system with controllable coverage area - Google Patents

Abstract

The utility model discloses a road illuminating system with a controllable covering area, which comprises a plurality of illuminating lamps. Each illuminating lamp comprises a control unit and a plurality of light emitting units of which the brightness can be independently controlled. The control unit comprises a sensing module, a signal processing module, a brightness control module and a network communication module. High-brightness and large-area continuous illumination is performed on the road with many accidents and the area with low public security in harsh weather. At common road segment and time period, when a vehicle and a passenger pass by, illumination covering areas of the illuminating lamps are controlled according to the factors of position, moving direction, speed, etc. Only partial areas in front of and behind the vehicle and the passenger are illuminated, and in other areas, the illuminating lamps are controlled in a pre-operation state or extinguished. The road illuminating system has the advantages of: simple structure, easy realization, low energy consumption and high safety.

Description

A road lighting system with controllable coverage area

technical field

The utility model relates to the technical field of road lighting lamps, in particular to a road lighting system with controllable coverage area.

Background technique

The main function of road lighting is to improve the safety of the traffic system, provide pedestrians and drivers with a clear line of sight to reduce traffic accidents, however, road lighting needs to consume a lot of energy and increase a lot of costs, and at the same time, with the reduction of vehicles and pedestrians at night A large amount of energy is wasted and light pollution is brought to the environment. The current treatment of road lighting is generally to reduce or extinguish the brightness of all lighting lamps. Although energy consumption can be reduced, safety will be reduced.

Utility model content

In view of the current situation and existing problems of the above-mentioned prior art, the purpose of this utility model is to provide a road lighting system with controllable coverage area for road lighting of passing vehicles and pedestrians.

The purpose of this utility model is achieved through the following technical solutions:

A road lighting system with controllable coverage area, which includes a plurality of lighting lamps, each lighting lamp includes a control unit and a plurality of light-emitting units that can independently control brightness, and the control unit includes a sensing module, a signal processing module, Brightness control module and network communication module; the sensing module, brightness control module and network communication module are respectively connected with the signal processing module, and the sensing module is used to detect the speed, position, direction of travel and weather conditions of vehicles and pedestrians , and measure the state and brightness of the lighting lamp through the voltage, current sensor and brightness sensor to monitor whether the lighting lamp is faulty, and the information measured by the sensing module is sent to the signal processing module; the signal processing module receives the information measured by the sensing module and After the network communication module of the adjacent lighting lamp transmits the pedestrian and vehicle position and movement direction information, the brightness of each light-emitting unit is controlled by the brightness control module, and then the lighting coverage area of the lighting lamp is adjusted.

Further, the network communication modules of adjacent lighting lamps communicate through wired or wireless means. the

Further, the sensing module includes sensors for the position of pedestrians and vehicles, voltage and current sensors powered by lighting lamps, lighting brightness sensors for lighting lamps, signal conditioning circuits and analog-to-digital conversion circuits; the sensors for pedestrians and vehicles are used to detect pedestrians and vehicles. The position and direction of travel of the vehicle; the signal conditioning circuit is used to amplify and filter the detection signals output by each sensor; the analog-to-digital conversion circuit is used to perform analog-to-digital conversion on the signal output by the signal conditioning circuit, and convert the analog signal into a digital signal. the

Further, the signal processing module includes a digital signal processing chip and a storage chip. the

Further, the digital signal processing chip adopts the PIC18F24J10 chip whose program code is solidified by the original factory, and the storage chip adopts the SST39VF1602 chip whose data is solidified by the original factory.

Further, the brightness control module includes a power drive chip for voltage and current control of each light emitting unit of the lighting lamp.

Further, the power drive module adopts a DC976A chip.

Further, multiple or multiple groups of light-emitting units of each lighting lamp are arranged on the planar support of the lighting lamp, or a plurality of light-emitting units are arranged on a cylindrical or spherical support, using the shape of the support and The light irradiation angle of the light emitting unit changes the illumination coverage area.

Compared with the prior art, the utility model has the following advantages and technical effects:

The lighting system of the utility model has a simple structure and is easy to realize. The lighting system can dynamically control the brightness of the lighting and the lighting area according to factors such as road danger, public security situation, weather, environment, vehicle and pedestrian position, speed, etc. Brightness, continuous lighting in a wide range, and in ordinary road sections and time periods, when vehicles and pedestrians pass by, the lighting coverage area of the lights is controlled according to factors such as their position, direction of travel and speed, and only part of the area in front of and behind vehicles and pedestrians is illuminated , while other areas control the lights to be in the pre-working state or extinguished. In the case of reducing energy consumption, the utility model does not reduce the safety of road traffic, and when the lighting lamp is abnormal, it can also notify the lighting lamp control center and the road lighting management and maintenance department to repair and replace the faulty part of the lighting lamp through the network communication module.

Description of drawings

Figure 1 is a structural diagram of a road lighting system with controllable coverage area.

Figure 2 shows the sensing module, which is mainly composed of sensors, amplification and filtering circuits, and analog-to-digital conversion circuits.

FIG. 3 is a signal processing module, which mainly includes a CPU and a brightness database of light-emitting units corresponding to positions.

Figure 4 shows the brightness control module, which mainly includes voltage and current control power drive chips.

Fig. 5 is a diagram showing the arrangement of each light-emitting unit in the illuminating lamp.

Fig. 6 is a schematic diagram of the working process of the lighting system for illuminating the coverage area.

Figure 7 is a schematic diagram of changes in the lighting coverage area. The dotted line in the figure is the maximum coverage area of the lighting lamp, and the filled part is the adjustable coverage area of the lighting lamp according to the movement direction and position of pedestrians and vehicles.

Detailed ways

The implementation of the utility model will be further described below in conjunction with the accompanying drawings, but the implementation and protection of the utility model are not limited thereto.

The lighting lamp of the road lighting system of the present invention includes a plurality or groups of light-emitting units that can independently control the brightness, as shown in Figure 1, the control unit of each lighting lamp includes a sensing module 1, a signal processing module 2, and a brightness control module 3 , Network communication module 4; Sensing module 1 is used to measure the speed, position, direction of travel, weather conditions (such as whether there is wind and rain) of vehicles and pedestrians, and measure the brightness of lighting lamps, and the measured information is sent to the signal processing module 2. The signal processing module 2 receives the measured information and other groups of information transmitted through the network communication module 4 to process and then control the brightness control module 3 to adjust the lighting coverage area of the lighting lamp, and at the same time monitor the status of the lighting lamp itself according to the measurement of the brightness of the lighting lamp , and through the network communication module 4 to send to adjacent lights and light control center for necessary maintenance, the network communication module 4 receives the incoming information from other lights and sends this group of measurement information to other lights through wired or wireless The lighting control unit realizes the sending and receiving of data.

Each light includes a control unit and multiple or multiple sets of light-emitting units that can independently control the brightness. The light-emitting units are arranged on the planar support of the light, or in order to increase the coverage area of the light, the light-emitting units are arranged on a cylinder On a support body with a spherical or spherical shape, the illumination coverage area can be changed by using the shape of the support body and the light irradiation angle of the light-emitting unit. Multiple or multiple groups of light-emitting units of each lighting lamp are arranged on the planar shape support of the lighting lamp, or in order to increase the coverage area of the lighting lamp, the light-emitting units are arranged on a cylindrical or spherical support, and the support body The shape of the light-emitting unit and the light irradiation angle of the light-emitting unit change the illumination coverage area.

The sensing module is used to measure the speed, position, direction of travel, weather, etc. of vehicles and pedestrians, and measure the status and brightness of the lighting lamp through the voltage, current and other electrical parameters of the lighting lamp and the brightness sensor to monitor whether the lighting lamp is faulty . As shown in Figure 3, the sensing module includes sensors for pedestrians and vehicles, voltage and current sensors for power supply of lighting lamps, lighting brightness sensors for lighting lamps, signal conditioning circuits for signal amplification and filtering of each sensor, analog-to-digital conversion circuits, etc. The position sensing can be realized by ultrasonic, infrared, inductive coil, photoelectric sensor, etc., which are used to detect the position and direction of travel of pedestrians and vehicles; the signal conditioning circuit is used to amplify and filter the detection signal output by the sensor to meet the modulus Conversion requirements; the analog-to-digital conversion circuit is used to perform analog-to-digital conversion on the signal output by the signal conditioning circuit, and convert the analog signal into a digital signal for subsequent digital signal processing.

After the signal processing module receives the measured information and the information transmitted by the adjacent lighting lamps through the network communication module, it controls the brightness according to the movement speed of vehicles and pedestrians. The brightness of the light-emitting unit, and then adjust the lighting coverage area of the lighting. At the same time, according to the measurement of electrical parameters such as the voltage and current of the lighting and the measurement of the brightness of the lighting by the brightness sensor, monitor the status of the lighting itself, such as the presence of voltage, current and brightness. If there is an abnormality, the current voltage, current, brightness and other parameters of the lighting lamp are sent to the adjacent lighting control unit, lighting control center and road lighting management and maintenance department through the network communication module, and the faulty parts or lighting lamps are replaced in time to troubleshoot. As shown in Figure 2, the signal processing module includes digital signal processing chips such as CPU, MCU, DSP or FPGA and storage chips, etc., which are used to analyze the digital signal output by the sensor module and the data received by the network communication module, and the internal storage of the signal processing module The luminous unit database corresponding to the lighting area covering the position of pedestrians and vehicles, determine the brightness of each luminous unit of this lighting according to the database, and control the brightness of each luminous unit through the brightness control module, if it exceeds the lighting coverage area of this lighting. When the adjacent lighting lamps perform lighting coverage, the information is sent to the adjacent lighting lamps through the network communication module, and the light-emitting units corresponding to the adjacent lighting lamps are illuminated.

As an example, the digital signal processing chip adopts the PIC18F24J10 chip whose program code is solidified by the original factory, and the storage chip adopts the SST39VF1602 chip whose data is solidified by the original factory. The power drive module uses a DC976A chip.

As shown in Figure 4, the brightness control module manages the power supply of the light-emitting units. The brightness control module includes power drive chips for voltage and current control of each light-emitting unit of the lighting lamp. The brightness control module receives control commands from the signal processing module and controls each light-emitting unit. voltage and current, and then adjust the brightness of each light-emitting unit.

The network communication module receives information from other lighting control units and sends the measurement information of this lighting control unit to other lighting control units through wired or wireless, so as to realize data transmission and reception.

As shown in FIG. 5 , multiple or multiple groups of light emitting units of each lighting lamp are arranged on the planar support body of the lighting lamp. In order to increase the coverage area of the lighting lamp, a plurality of light-emitting units can also be arranged on a cylindrical or spherical support body, and the illumination coverage area can be changed by using the shape of the support body and the light irradiation angle of the light-emitting unit.

The working process of the lighting system in this example is shown in Figure 6:

1 The network communication module receives the position and direction information of pedestrians and vehicles sent by the network communication module of adjacent lights, and the sensing module detects the position and direction of travel of pedestrians and vehicles in the lighting coverage area of this light;

2 When a lighting lamp receives the position and direction of travel of pedestrians and vehicles sent by adjacent lighting lamps, the voltage, current and brightness status information of adjacent lighting lamps, and the position information of pedestrians and vehicles detected by the sensing module of this lighting lamp Then notify the signal processing module of the lighting lamp, the signal processing module queries the database in the memory of the signal processing module according to the position and direction information of pedestrians and vehicles, and obtains the brightness information corresponding to each light-emitting unit of the lighting lamp (such as whether it is bright or not). bright), and notify the brightness control module;

3 The brightness control module controls the voltage and current of each light-emitting unit of the lighting lamp according to the brightness information (such as on and off) corresponding to each light-emitting unit sent by the signal processing module, and then adjusts the brightness of each light-emitting unit;

4 The sensing module detects the brightness, voltage, current and other electrical parameters of the lighting lamp to determine whether there is an abnormality. If there is an abnormality, the lighting control center and the road lighting management and maintenance department are notified through the network communication module to repair and replace the faulty parts of the lighting lamp.

The change process of the lighting coverage area is shown in Figure 7: the length of the lighting coverage area is L, and the sensor module detects the position and direction of travel of vehicles and pedestrians in the lighting coverage area, and aligns them according to the positions of pedestrians and vehicles. The area with the rear length a and the front length b is illuminated, L=a+b; when pedestrians and vehicles advance to the edge of the area covered by the light beyond the area covered by the light, they will be adjacent to the light from the front in the direction of travel The lights of pedestrians and vehicles are illuminated to ensure that the area (a+b) with a length behind the pedestrians and vehicles and a length b in front is illuminated by the lights. After all the areas of b exceed the lighting coverage area of this lighting lamp, the lighting lamps adjacent to this lighting lamp in front of the direction of travel will illuminate the area with length a behind and b in front of pedestrians and vehicles until the lighting coverage is exceeded The area is then illuminated by the next adjacent light.

Claims (8)

1. A road lighting system with controllable coverage area, characterized in that it includes a plurality of lighting lamps, each lighting lamp includes a control unit and a plurality of light-emitting units that can independently control the brightness, and the control unit includes a sensing module, Signal processing module, brightness control module and network communication module; the sensing module, brightness control module and network communication module are respectively connected with the signal processing module, and the sensing module is used for vehicle and pedestrian speed, position, direction of travel and The weather conditions are detected, and the status and brightness of the lighting lamp are measured through the voltage, current sensor and brightness sensor to monitor whether the lighting lamp is faulty, and the information measured by the sensing module is sent to the signal processing module; the signal processing module receives the sensing module After the measured information and the pedestrian and vehicle position and movement direction information transmitted by the network communication module of the adjacent lighting lamp, the brightness of each light-emitting unit is controlled by the brightness control module, and then the lighting coverage area of the lighting lamp is adjusted. 2. The road lighting system with controllable coverage area according to claim 1, characterized in that the network communication modules of adjacent lighting lamps communicate through wired or wireless means. 3. The road lighting system with controllable coverage area according to claim 1, characterized in that the sensing module includes sensors for the position of pedestrians and vehicles, voltage and current sensors for power supply of lighting lamps, lighting brightness sensors for lighting lamps, signal conditioning circuit and analog-to-digital conversion circuit; sensors for the position of pedestrians and vehicles are used to detect the position and direction of travel of pedestrians and vehicles; signal conditioning circuits are used to amplify and filter the detection signals output by each sensor; analog-to-digital conversion circuits are used to The signal output by the conditioning circuit is converted from analog to digital. 4. The road lighting system with controllable coverage area according to claim 1, characterized in that the signal processing module includes a digital signal processing chip and a storage chip. 5. The road lighting system with controllable coverage area according to claim 4, characterized in that said digital signal processing chip adopts PIC18F24J10 chip with original factory solidified program code, and said storage chip adopts original factory fixed SST39VF1602 chip with data. 6. The road lighting system with controllable coverage area according to claim 1, characterized in that the brightness control module includes a power drive chip for voltage and current control of each light emitting unit of the lighting lamp. 7. The road lighting system with controllable coverage area according to claim 6, characterized in that the power drive module adopts a DC976A chip. 8. The road lighting system with controllable coverage area according to claim 1, characterized in that a plurality or groups of light-emitting units of each light are arranged on the planar shape support of the light, or a plurality of light-emitting units Arranged on a cylindrical or spherical support body, the illumination coverage area can be changed by utilizing the shape of the support body and the light irradiation angle of the light-emitting unit.

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