KR20080012648A - Street light system - Google Patents

Abstract

The present invention relates to a street lamp system which reduces power consumption by using LED and is low in maintenance and repair cost. A streetlight system according to the present invention includes a streetlight system including a plurality of streetlights, each streetlight including a light source including a plurality of LEDs; A light source driver for driving the light source; A communication unit communicating with an adjacent street light and a vehicle; Sensor unit for sensing the surrounding information; And a controller configured to adjust a brightness of the light source by controlling a light source driving unit according to the information received by the communication unit and the information sensed by the sensor unit.

Description

Street light system {STREET LIGHT SYSTEM}

1 is a schematic diagram showing a street light power control system using a wired or wireless local area network according to the prior art.

2 is a schematic view showing a street lamp system according to the present invention;

Figure 3 is a block diagram showing the configuration of each street lamp of the street lamp system according to the present invention.

Figure 4 is a block diagram showing a communication unit of each street light of the street lamp system according to the present invention.

Figure 5 is a block diagram showing the sensor unit of each street light of the street lamp system according to the present invention.

The present invention relates to a street lamp system, and more particularly, to a street lamp system that reduces power consumption by using LED, and is low in maintenance and repair cost.

1 is a schematic diagram illustrating a streetlight power control system using a wired / wireless local area network according to the prior art, in which the wired / wireless transceiver is mounted and mounted in a distribution box. As illustrated in FIG. 1, when the vehicle 1 enters the vehicle 1 access road, the street lamp distribution box 2 in the area A where the vehicle sensor is attached detects the vehicle 1, and then the street lamp distribution box 2 Data is transmitted to the B-zone streetlight distribution box (3) using a wired / wireless data communication network. The power control system of the streetlight distribution box 3 receiving the data illuminates the road with the maximum brightness of the streetlights in the A and B zones at the same time.

When the vehicle 1 entering the road exits the zone A and reaches the zone B, the vehicle detection sensor of the streetlight distribution box 3 in the zone B is activated to transmit data to the streetlight distribution box 4 in the zone C. The power control system of the streetlight distribution boxes 3 and 4 receiving the data illuminates the road at the same time maximizing the brightness of the streetlight 5 in the B zone and the C zone.

Street light distribution boxes (2, 3, 4) of the street light power control system using a wired or wireless local area network according to the prior art can control the power to a plurality of street lights assigned to the distribution box (2, 3, 4) built-in wired and wireless data transmission and reception. Power control unit is installed.

In the streetlight power control system using the wired / wireless local area network according to the prior art described above, since power control lines must be installed from the distribution box to the plurality of street lamps in order to control the plurality of street lamps, the maintenance cost is high and the power consumption is high. There is a problem.

In order to solve the above-mentioned problems, the present invention aims to provide a street lamp system which reduces power consumption and is low in maintenance and repair cost, especially by using LEDs.

A streetlight system according to the present invention includes a streetlight system including a plurality of streetlights, each streetlight including a light source including a plurality of LEDs; A light source driver for driving the light source; A communication unit communicating with an adjacent street light and a vehicle; Sensor unit for sensing the surrounding information; And a controller configured to adjust a brightness of the light source by controlling a light source driving unit according to the information received by the communication unit and the information sensed by the sensor unit.

The sensor unit includes at least one of an illuminance sensor for detecting a brightness of an ambient, a GPS for detecting location information and current time information of each street light, a humidity sensor for detecting an ambient humidity, and a motion sensor for detecting a movement of an object. can do.

In addition, the street lamp system according to the present invention may further include a network communication unit for interworking with the network to which the traffic server is connected.

The communication unit preferably includes at least one of a Zigbee module, a UWB module, a Bluetooth module, a wireless LAN module, a wireless communication module and a wired communication module.

The communication unit may transmit location information acquired through the sensor unit to the vehicle.

The LED preferably comprises a white LED.

The communication unit may receive the state information of the vehicle and transmit it to the traffic server.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a street lamp system according to the present invention, and illustrates a case in which a plurality of street lamps 20a, 20b, 20c, and 20d are installed on a road on which the vehicle 10 runs.

2, the street lamp system according to the present invention includes a plurality of street lamps (20a, 20b, 20c, 20d), each of the street lights are arranged at intervals of about 5 to 15m.

3 is a block diagram showing the configuration of each street lamp of the street lamp system according to the present invention.

Referring to FIG. 3, each street light according to the present invention includes a controller 100, a light source driver 110, a light source 120, a communication unit 130, and a sensor unit 140.

The controller 100 adjusts the brightness of the light source 120 by controlling the light source driver 110 according to the information received by the communication unit 130 and the information sensed by the sensor 140, and performs overall control of the street lamp. .

The light source 120 includes a plurality of light emitting diodes (LEDs). It is preferable that the LED is a white LED. LEDs consume significantly less power than conventional halogen lamps and require little maintenance and repair. Therefore, there is an advantage that the management cost can be minimized.

The light source driver 110 drives the light source 120 including the plurality of LEDs. The light source driver 110 functions to turn on / off the light source 120 or adjust the brightness under the control of the controller 100.

The communicator 130 performs a function of communicating with an adjacent street light and a vehicle. The vehicle 10 is provided with a communication module, when the vehicle 10 enters the road, communication with the communication unit 130 of the street light is started. The vehicle 10 then operates as a sensor node. When the vehicle enters the lane where the street lamp according to the present invention is installed, the communication unit 130 may communicate with the vehicle to properly light the street lamp according to the position of the vehicle.

The communicator 130 transmits the location information acquired through the sensor unit 140 to the vehicle. That is, the controller controls the sensor unit 140 to obtain location information of each street light, and transmits the acquired location information to the vehicle in operation through the communication unit 130 so that each vehicle can determine the current location. The communicator 130 not only communicates with the vehicle but also communicates with an adjacent street lamp.

It is possible to use a variety of communication methods for the communication, as shown in Figure 4, it is possible to use a Zigbee module, UWB module, Bluetooth module, Wireless LAN module and various wired / wireless communication module. .

The Zigbee communication method is one of the IEEE 802.15.4 standards supporting near field communication, and is a communication method for near field communication and ubiquitous computing of about 10 to 20 meters in the wireless networking field. Zigbee has the advantage of minimizing power consumption while having a relatively slow data transfer rate. It is used for short-range communication market such as intelligent home network and building, industrial equipment automation, logistics, environmental monitoring, human interface, telematics and military. Its small size, low power consumption, and low price have recently attracted much attention as a ubiquitous construction solution such as home network.

Ultra WideBand (UWB), the next generation of wireless communication technology, consists of thousands to millions of low-power pulses per second while using frequencies in the GHz band. A large amount of data can be transmitted at a distance of up to 70m with a low power of 0.5m / W, as well as in the ground or behind a wall. As well as high-speed Internet access, radar functions can be used to monitor specific areas, and when a disaster occurs such as an earthquake, radio detectors can save lives. Developed for military purposes by the US Department of Defense in the 1950s, it has been commercialized rapidly since it was recently approved for commercial use.

UWB communication is far ahead of existing wireless communication technologies such as IEEE 802.11 and Bluetooth in speed and power consumption. The speed is about 10 to 20 times faster, and the amount of power required is about a hundredth of that of a cell phone or a wireless LAN. Especially, it is suitable for the Personal Area Network (PAN), which connects personal computers, peripherals, and home appliances, which are located within a 10m distance from the office or home, with a high-speed wireless interface. have.

Bluetooth communication refers to a standard that enables real-time communication in two directions by wirelessly connecting a computer and a mobile terminal to a home device. In 1994, the company was first researched by Ericsson, Sweden, and in February 1998, it was developed by the Bluetooth Special Interest Group (SIG), which was formed by IBM, Intel, Nokia, and Toshiba. In December 2001, Microsoft, 3Com, Lucent Technologies, and Motorola joined the global standard.

Bluetooth communication is primarily applied to mobile phones and notebook computers. Applications of mobile phones include wireless headsets, Internet access, intercom, wireless phones, and phones with a combination of functions. In the case of the combined function, it is automatically switched to the wireless telephone mode at home, and can be used as an intercom by connecting to a private switching network in the office. In the case of wireless headsets, you can make or receive calls without removing your phone. It also applies to e-commerce using mobile phones, such as using a vending machine with a mobile phone or automatically paying a fare when riding a subway.

In the case of laptop computers, this could be an Internet connection via a mobile phone. In addition, data exchange is possible through synchronization of data such as an address book in a mobile phone and a notebook computer and a network configuration between the notebook computer. It is expected to further develop in the future by riding on the rapid spread of mobile communication and internet.

Each street lamp according to the present invention may further include a network communication unit 150 for interworking with a network (eg, the Internet) to which a traffic server is connected. For example, when a vehicle breaks down and is stopped on a shoulder, OBE (On-Board Equipment) installed in the vehicle determines the state of the vehicle, such as whether there is an accident, a failure, and the state of the vehicle through the communication unit 130. Transmission to the control unit 100. The control unit 100 may transmit the repair vehicle to the point of failure by transmitting necessary information such as the fact of failure and the location of the vehicle to a traffic server (not shown). In the event of an accident or various emergency requests, the traffic server can be notified of this fact similarly to a vehicle failure.

The street lamp system according to the present invention may be installed at a roadside, or may be installed at a place where a human traffic is located, such as an alley. When an emergency situation occurs for a pedestrian, when a pedestrian presses an emergency rescue button such as a mobile phone, the communication module of the mobile phone transmits a signal for requesting an emergency rescue to the communication unit 130. The communication unit 130 may receive the current position of the pedestrian and transmit an emergency rescue signal along with the location information to the police station through the network.

The sensor unit 140 senses ambient information such as illuminance and humidity.

For example, as illustrated in FIG. 5, the sensor unit 140 may include an illumination sensor for detecting ambient brightness, a GPS for detecting location information and current time information of each street light, a humidity sensor for detecting ambient humidity, and It may include one or more motion sensors for detecting the movement of the surrounding object.

The illuminance sensor outputs a signal including information on the surrounding brightness so that the controller 100 may adjust the ON / OFF and the brightness of the street lamp according to the surrounding brightness. The GPS acquires and outputs the positional information of each street light and the current time information based on the signal received from the GPS satellites. The humidity sensor senses the ambient humidity to allow the fog and rain control unit to properly adjust the brightness of the street lamp. The motion sensor detects the movement of surrounding objects and transmits the detection to the controller. The motion sensor allows the control unit to properly light the street lamp according to the detected position of the person when the street lamp is installed in a lane where there are human traffic such as an alley.

The street lamp system according to the present invention has the advantage of reducing the power consumption and low maintenance and repair cost by using the LED. In addition, there is an advantage that it helps to safely drive the vehicle by transmitting the information obtained by the sensor of the street lamp to the vehicle, and receives the state of the vehicle.

Claims (7)

In the street light system including a plurality of street lights, Each street light A light source including a plurality of LEDs; A light source driver for driving the light source; A communication unit communicating with an adjacent street light and a vehicle; Sensor unit for sensing the surrounding information; And Control unit for controlling the brightness of the light source by controlling the light source driver in accordance with the information received by the communication unit and the information sensed by the sensor unit Street light system comprising a. The method of claim 1, The sensor unit includes at least one of an illuminance sensor for detecting a brightness of an ambient, a GPS for detecting location information and current time information of each street light, a humidity sensor for detecting an ambient humidity, and a motion sensor for detecting a movement of an object. Street light system, characterized in that. The method of claim 1, Street light system further comprises a network communication unit for interworking with the network to which the traffic server is connected. The method of claim 1, The communication unit may include a Zigbee module, a UWB module, a Bluetooth module, a wireless LAN module, a wireless communication module, and at least one of a wired communication module. The method of claim 1, The communication unit street light system, characterized in that for transmitting the position information obtained through the sensor unit to the vehicle. The method of claim 1, And the LED comprises a white LED. The method of claim 1, The communication unit receives the state information of the vehicle and the street light system, characterized in that for transmitting to the traffic server.

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