CN102149242A

CN102149242A - LED (Light Emitting Device) dynamic intelligent tracking and energy saving illumination control system

Info

Publication number: CN102149242A
Application number: CN2011101265006A
Authority: CN
Inventors: 牛晓芳; 罗金荣
Original assignee: Tianjin Siboke Technology Development Co Ltd
Current assignee: Tianjin Siboke Technology Development Co Ltd
Priority date: 2011-05-16
Filing date: 2011-05-16
Publication date: 2011-08-10
Also published as: WO2012155805A1

Abstract

The invention provides an LED (Light Emitting Device) dynamic intelligent tracking and energy saving illumination control system which comprises a motion object information input module, a processor module, a PWM (Pulse Width Modulation) control circuit, a light source main circuit and an LED light source. A data output end of the motion object information input module is connected with a data input end of the processor module, an output end of the processor module is connected with a data input end of the PWM control circuit, a data output end of the PWM control circuit is connected with a control end of the light source main circuit, and an output end of the light source main circuit is connected with an input end of the LED light source. The processor module comprises a feature extraction module, a feature point matching module and a target locating module. The system has the beneficial effects of interference freedom, stable system, reliable running and accurate locating.

Description

The LED dynamic and intelligent is followed the tracks of the energy-saving illumination control system

Technical field

The invention belongs to light control field, especially relate to a kind of LED dynamic and intelligent and follow the tracks of the energy-saving illumination control system.

Background technology

For present all kinds of warehouses and relevant place; especially freezer and pharmaceutical warehouse and food warehouse; in order to realize following function: 1; maximization to the warehouse illuminator is energy-conservation; 2; prolong the useful life of lighting; 3; reduce the rising of light fixture heating as far as possible to ambient temperature; the protection stock; particularly for the enterprise that the refrigeration demand is arranged; saved the freezer refrigerating amount; can take moving object monitoring in the warehouse; come the bright and mode that turn off the light when you leave of lamp to reach above function by the people; moving object monitoring in the existing warehouse; the general infrared induction that adopts; radio detection; technology such as radar detection, but there are the following problems: and system signal is subject to disturb; unstable; shortcomings such as inaccuracy are located in unreliable and moving object in real time.

Summary of the invention

The purpose of this invention is to provide a kind of interference-free, system stability, LED dynamic and intelligent reliable, accurate positioning is followed the tracks of the energy-saving illumination control system.

Technical scheme of the present invention is: the LED dynamic and intelligent is followed the tracks of the energy-saving illumination control system, comprise the moving object information input module, processor module, pwm control circuit, light source main circuit and led light source, the data input pin of the data output end connection processing device module of moving object information input module, the processor module output connects the data input pin of pwm control circuit, the data output end of pwm control circuit connects the control end of light source main circuit, the output of light source main circuit connects the input of led light source, described processor module comprises characteristic extracting module, the Feature Points Matching module, the target localization module.

Further, described moving object information input module is 1,2 or a plurality of.

Further, described moving object information input module be installed in led light source two video cameras at the scene.

Further, the on-the-spot installation site of video camera is fixed.

Further, described light source main circuit adopts the LM3402 chip.

Advantage and good effect that the present invention has are:

1, by control system to the LED light fixture, reach with moving object and be formed centrally a field of illumination that meets illumination requirement in being, to weaken gradually greater than this regional illumination, move with target in this zone, in the warehouse other do not use the zone, and its illuminance setting is that low-light (level) is kept level, and Based Intelligent Control can make the tracking of light area near smooth gradual change, the maximization that reaches the warehouse illumination is energy-conservation, and has prolonged the useful life of light fixture.

2, the reliable accurate in locating coordinate of object in the space on a large scale of the locate mode that combines with computer vision technique of picture control is for the brightness of control light fixture provides reliable information.

Description of drawings

Fig. 1 is a block diagram of the present invention;

Fig. 2 is a configuration schematic diagram of the present invention;

Fig. 3 is the control principle figure of led light source.

Embodiment

As shown in Figure 1, LED dynamic and intelligent of the present invention is followed the tracks of the energy-saving illumination control system, after the information via moving object information input module of the moving object of being gathered is gathered, pass through characteristic extracting module, Feature Points Matching module, target localization module successively, carry out the location of moving object, and then control the light source main circuit by pwm control circuit and light led light source

As Fig. 1, shown in Figure 2, described moving object information input module is corresponding mutually a pair of video camera 2, described video camera 2 can have two pairs or how right, two pairs of video cameras 2 that show among Fig. 2, processor module, and the characteristic extracting module in the processor module, the Feature Points Matching module, the all computing realizations in main control computer 1 of target localization module, after the computing moving object 4 is positioned, and lighting position and the monochrome information of optimizing being passed to the pwm control circuit that is installed together with LED light fixture 3 by network, this circuit and its accessory circuit carry out stepless dimming to LED light fixture 3 and are reached for moving object 4 and throw light on.

Comprise the moving object information input module, described moving object information input module is to be installed in 1 two video camera 2 at the scene of led light source, and these two video cameras 2 are demarcation with the on-the-spot known object of reference of setting, and it is corresponding in the captured image-generating unit of video camera 2, set up on-the-spot 3 d space coordinate and they relations in video camera 2 image coordinate

Described processor module comprises characteristic extracting module, Feature Points Matching module, target localization module,

Described characteristic extracting module is meant: the characteristic value of the matrix that each neighborhood of pixels during input picture is calculated is formed, when surpassing the threshold value that pre-sets, then this point is considered to the characteristic point in the image.

Described Feature Points Matching module is meant: the characteristic point that extracts is sought corresponding same point in another input figure.Because the difference of camera visual angle, the left and right sides and position, same in the image of the left and right sides image coordinate difference of correspondence, and this difference reaction the difference of its position in camera coordinate system.The coordinate position of matching characteristic o'clock in two figure, in conjunction with the parameters of pick-up head and the physical space feature of demarcating in advance, utilization computer machine vision algorithm just can be calculated out accurately with its position in world coordinate system.

Described target localization module is meant: will be in world coordinate system all characteristic points aggregate into several set according to its height and position, the actual position of target in the space of these set correspondences.

Pwm control circuit, light source main circuit and led light source, the data output end of pwm control circuit connects the control end of light source main circuit, the output of light source main circuit connects the input of led light source, be formed centrally a field of illumination that meets illumination requirement in controlling led light source and being with moving object, to weaken gradually greater than this regional illumination, move with target in this zone, in the warehouse other do not use the zone, its illuminance setting is that low-light (level) is kept level, and Based Intelligent Control can make the tracking of light area near smooth gradual change.

The basic principle of control circuit is as follows:

By sending different Current Control instruction-pwm signals to the Current Control chip with the grid microprocessor linked, chip LM3402 regulates and control drive current after receiving pwm signal, adjustment by drive current, control brightness, control signal is the size of recently regulating If with the duty of PWM, the flow through electric current of LED: If=Vcs/Rsns * duty ratio, wherein Vcs=0.2V.

More than one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limit practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.

Claims

1.LED dynamic and intelligent is followed the tracks of the energy-saving illumination control system, it is characterized in that: comprise the moving object information input module, processor module, pwm control circuit, light source main circuit and led light source, the data input pin of the data output end connection processing device module of moving object information input module, the processor module output connects the data input pin of pwm control circuit, the data output end of pwm control circuit connects the control end of light source main circuit, the output of light source main circuit connects the input of led light source, described processor module comprises characteristic extracting module, the Feature Points Matching module, the target localization module.

2. LED dynamic and intelligent according to claim 1 is followed the tracks of the energy-saving illumination control system, and it is characterized in that: described moving object information input module is 1,2 or a plurality of.

3. LED dynamic and intelligent according to claim 2 is followed the tracks of the energy-saving illumination control system, it is characterized in that: described moving object information input module be installed in led light source two video cameras at the scene.

4. LED dynamic and intelligent according to claim 3 is followed the tracks of the energy-saving illumination control system, and it is characterized in that: the on-the-spot installation site of video camera is fixed.

5. LED dynamic and intelligent according to claim 1 is followed the tracks of the energy-saving illumination control system, it is characterized in that: described light source main circuit adopts the LM3402 chip.