TWI381122B - Outdoor illuminating system - Google Patents

Description

Outdoor lighting system

The invention relates to an outdoor lighting system with energy saving function.

Street lamps are the public facilities needed in people's daily life. How to make street lamps save energy has begun to attract people's attention. LEDs are used on street lamps for energy saving because of their high luminous efficiency and low energy consumption. See Daniel A. Steigerwald et al., IEEE Journal on Selected Topics in Quantum Electronics, Vol. 8, No. 2 , March/April 2002, Illumination With Solid State Lighting Technology.

However, the previous street lamps (including the street lamps using LEDs) are controlled by ordinary switches. The street lamps can only be turned on and off. They cannot adjust the brightness according to the external environment where the street lamps are located, thus causing waste of power. The situation is more serious.

In view of this, it is necessary to provide an outdoor lighting system capable of adjusting the brightness of the street lamp to save power.

An outdoor lighting system includes: an outdoor light fixture, a communication network, and a main control system coupled to the communication network. The outdoor luminaire includes a light source, a monitoring device, and a brightness control device. The monitoring device and the brightness control device are respectively connected to the communication network, and the brightness control device is electrically connected to the light source. The monitoring device is configured to generate a monitoring signal including brightness information of an area within the radiation range of the light source and to communicate The monitoring signal is transmitted to the main control system, and the main control system receives the monitoring signal and generates a corresponding brightness control signal according to the brightness information in the monitoring signal, and the brightness control device receives the main control by using the communication network. The brightness control signal generated by the system controls the brightness of the light source according to the brightness control signal.

Compared with the prior art, the outdoor lighting system monitors the brightness of an area in the radiation range of the outdoor light fixture by the monitoring device, and uses the main control system to output a brightness control signal according to the brightness information of the area in the radiation range of the light source. It is transmitted from the communication network to the brightness control device to adjust the brightness of the light source, so the brightness of the light source can be moderately adjusted according to the difference in ambient brightness to save power.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, an outdoor lighting system 10 according to a first embodiment of the present invention includes a plurality of outdoor light fixtures 11, a communication network 12, and a main control system 13.

Referring to FIG. 2, the plurality of outdoor lamps 11 respectively include a light source 111, a brightness control device 112 electrically connected to the light source 111, and a monitoring device 113. In this embodiment, each of the outdoor lamps 11 further includes a light pole 114 and a lamp housing 115 disposed on the light pole 114. The light source 111 is received in the lamp housing 115. The brightness control device 112 and the monitoring device 113 Both are disposed on the light pole 114; the monitoring device 113 is disposed adjacent to the light source 111. It can be understood that the brightness control device 112 and the monitoring device 113 can also be disposed on the lamp housing 115.

The light source 111 may be a high pressure sodium lamp, a metal halide lamp, a light emitting diode (LED) lamp or the like.

The brightness control device 112 includes an input/output interface circuit 1121, a memory module 1122, and a microprocessor 1123. The brightness control device 112 is connected to the communication network 12 via the input/output interface circuit 1121 to communicate with the main control system 13. Here, the brightness control device 112 can control the brightness of the light source 111 by controlling the operating current flowing through the light source 111.

The monitoring device 113 is disposed adjacent to the light source 111 and is in communication with the communication network 12. The monitoring device 113 is configured to detect the brightness of one area of the radiation range of the light source 111 and the damage condition of the outdoor light fixture 11, thereby generating a monitoring signal. The monitoring device 113 can be an analog camera, an IP camera, a Dome Camera, or a Speed Dome Camera.

The communication network 12 can be a 2.5G, 3G or other mobile communication data network, or a public wired network such as ADSL, VDSL, DTMF, RS485, etc., or a proprietary communication network.

The main control system 13 is connected to the communication network 12 for collecting information such as the brightness of the plurality of outdoor lamps 11 and controlling the plurality of outdoor lamps 11 respectively. The main control system 13 includes a database server 131 and a workstation host 132. The workstation host 132 is usually equipped with software such as information collection processing software and application management software.

The operation process of the outdoor lighting system 10 is substantially as follows: the monitoring device 113 turns the brightness information of one region within the radiation range of the detected light source 111 Switching to the corresponding electrical signal and transmitting the corresponding electrical signal to the main control system 13 via the communication network 12 to facilitate the worker to synchronously monitor the brightness of the area within the radiation range of the light source 111, the light source 111 The brightness information of the area in the radiation range is stored by the database server 131, and the workstation host 132 extracts and analyzes the brightness information in the database server 131 by its information collection processing software, and The processing result of the information collecting processing software is analyzed by the application management software to obtain a control command, and then a brightness control signal for the brightness of the light source 111 is sent, and the brightness control signal is transmitted to the communication network 12 by the communication network 12 The brightness control device 112 stores the brightness control signal by the memory module 1122 of the brightness control device 112. The microprocessor 1123 of the brightness control device 112 reads the brightness control signal in the memory module 1122 and according to the brightness. The control signal adjusts the operating current of the light source 111 to achieve the purpose of controlling the brightness of the light source 111. Specifically, when the brightness of the area in the radiation range of the light source 111 is high, the workstation control unit 132 can send a corresponding brightness control signal to the brightness control device 112, and the brightness control device 112 turns off the light source 111 or The brightness of the light source 111 is turned down to save power. In addition, since the monitoring device 113 also has the function of monitoring the damage condition of the outdoor luminaire 11, the operator can timely find the damaged outdoor luminaire 11 according to the display of the workstation host 132 and quickly acquire the position of the damaged outdoor luminaire 11 for maintenance.

Referring to FIG. 3, an outdoor lighting system 20 according to a second embodiment of the present invention is substantially the same as the outdoor lighting system 10 provided by the first embodiment, except that the outdoor lighting system 20 provided by the second embodiment is provided. Including a monitor for sensing the brightness of an area within the range of radiation of the source 111 Measuring device 213. The monitoring device 213 can be disposed on the lamp housing or the lamp post of the outdoor lamp 11 as long as it is located within the radiation range of the light source 111. The monitoring device 213 can be a variety of brightness sensing devices, such as a brightness sensing device including a light sensitive element and a conversion circuit. The photosensitive element can be a photoresistor (eg, a cadmium sulfide photoresistor), a photodiode or a phototransistor.

The monitoring device 213 is disposed within the radiation range of the light source 111 and disposed adjacent to the light source 111, and is coupled to the communication network 12. The monitoring device 213 can change the electrical signal by itself according to the sensed brightness, and transmit the electrical signal to the main control system 13 via the communication network 12.

The operation of the outdoor lighting system 20 is substantially as follows: the monitoring device 213 generates a corresponding electrical signal according to the brightness of an area of the radiation range of the light source 111 that is sensed, and the corresponding electrical signal is transmitted by the communication network 12. The main control system 13 is sent to the main control system 13 to facilitate the synchronization of the brightness of the area within the radiation range of the light source 111. The brightness information of the area in the radiation range of the light source 111 is stored by the database server 131. The workstation host 132 extracts and analyzes the brightness information in the database server 131 by its information collection processing software, and analyzes the processing result of the information collection processing software by using the application management software to obtain Controlling the command, and then emitting a brightness control signal for the brightness of the light source 111. The brightness control signal is transmitted to the brightness control device 112 by the communication network 12, and the brightness control is performed by the memory module 1122 of the brightness control device 112. The signal is stored, and the microprocessor 1123 of the brightness control device 112 reads the brightness control signal in the storage module 1122. According to the brightness adjustment of the light source control signal 111 of the current, Thereby, the purpose of controlling the brightness of the light source 111 is achieved. Specifically, when the brightness of the area in the radiation range of the light source 111 is high, the workstation control unit 132 can send a corresponding brightness control signal to the brightness control device 112, and the brightness control device 112 turns off the light source 111 or The brightness of the light source 111 is turned down to save power.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10,20‧‧‧Outdoor lighting system

11‧‧‧Outdoor lighting

12‧‧‧Communication network

13‧‧‧Main control system

111‧‧‧Light source

112‧‧‧Brightness control device

113,213‧‧‧Monitor

114‧‧‧light pole

115‧‧‧ lamp shell

131‧‧‧Database Server

132‧‧‧Workstation host

1121‧‧‧Output interface circuit

1122‧‧‧ Storage Module

1123‧‧‧Microprocessor

1 is a structural topology diagram of an outdoor lighting system according to a first embodiment of the present invention.

2 is a schematic structural view of the outdoor light fixture of FIG. 1.

3 is a structural topology diagram of an outdoor lighting system according to a second embodiment of the present invention.

10‧‧‧Outdoor lighting system

11‧‧‧Outdoor lighting

12‧‧‧Communication network

13‧‧‧Main control system

111‧‧‧Light source

112‧‧‧Brightness control device

113‧‧‧Monitor

131‧‧‧Database Server

132‧‧‧Workstation host

1121‧‧‧Output interface circuit

1122‧‧‧ Storage Module

1123‧‧‧Microprocessor

Claims (7)

An outdoor lighting system comprising an outdoor light fixture having a light source, wherein the outdoor lighting system further comprises a communication network and a main control system connected to the communication network; the outdoor light fixture further comprises a monitoring device and a brightness control device, the monitoring The device is connected to the communication network, and the brightness control device is connected to the communication network and electrically connected to the light source; the monitoring device is configured to generate a monitoring signal including brightness information of a region within the radiation range of the light source and by using the The communication network transmits the monitoring signal to the main control system, and the main control system receives the monitoring signal and generates a corresponding brightness control signal according to the brightness information in the monitoring signal, and the brightness control device receives the main control by using the communication network The brightness control signal generated by the system controls the brightness of the light source according to the brightness control signal, and the outdoor light fixture further includes a light pole and a lamp housing disposed on the light pole, the light source is received in the lamp housing, and the brightness control device is set The monitoring device is disposed on the lamp post or the lamp housing on the lamp post or the lamp housing. The outdoor lighting system of claim 1, wherein the light source is a high pressure sodium lamp, a metal halide lamp or a light emitting diode lamp. The outdoor lighting system of any one of claims 1 to 2, wherein the monitoring device is an analog camera, a webcam, a spherical camera or a high speed spherical camera. The outdoor lighting system of claim 1, wherein the monitoring device is a brightness sensing device, and the brightness sensing device is disposed within a radiation range of the light source, and includes a conversion circuit and a photosensitive element. The outdoor lighting system of claim 4, wherein the photosensitive element is a photoresistor, a photosensitive diode or a phototransistor. The outdoor lighting system of claim 1, wherein the main control system comprises a database server and a workstation host, wherein the database server is configured to store the monitoring signal, and the workstation host is configured to extract the storage The brightness information in the monitoring signal in the database server is analyzed and processed to generate a brightness control signal for controlling the brightness of the light source. The outdoor lighting system of claim 1, wherein the communication network is a mobile communication data network, a public wired network or a dedicated communication network.