A visible light communication receiving device for fully automatic tracking of light sources
A technology of visible light communication and receiving device, applied in the field of visible light communication, to achieve the effects of reducing multipath effect, high communication speed, and improving mobility
Inactive Publication Date: 2016-05-18
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] In view of this, the main purpose of the present invention is to provide a visible light communication receiving device that automatically tracks the light source. Through real-time detection and automatic rotation, the receiver and the light source can always maintain a direct line of sight, effectively overcoming the problem of moving the receiving device. Insufficient performance, greatly improving the reliability and speed of communication, and has a simple structure, low cost, and can be widely used
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0023] As shown in Figure 1(a) and Figure 1(b), Figure 1(a) and Figure 1(b) are schematic structural diagrams of a visible light communication receiving device for fully automatic tracking of light sources provided by the present invention, the device includes a cylindrical carrier , three light detection units, a pan-tilt, and a main control and storage unit. in:
[0024] Referring to Fig. 1 (a) and Fig. 1 (b), this cylindrical carrier has three mutually 120 degree cylindrical through-holes, and the central axis of these three cylindrical through-holes is parallel to the central axis of this cylindrical carrier, And the three cylindrical through holes all include a first section and a second section, the diameter of the...
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The invention discloses a visible light communication receiving device for fully automatically tracking a light source. The visible light communication receiving device comprises a cylindrical carrier, three light detection units, a cradle head and a main control and storage unit. The cylindrical carrier is provided with three cylindrical through holes which form an angle of 120 degrees with one another. The three light detection units are arranged in the three cylindrical through holes respectively, and each light detection unit comprises a detector tray, a visible light detector, a light filter and a convergent lens. The cradle head comprises a vertical elevation control stepping motor and a horizontal rotation control stepping motor and is connected with the cylindrical carrier through a gear. The error rates of visible light signals received by the three visible light detectors are calculated and compared, and therefore the three light detection units in the cylindrical carrier can steer to one visible light direction with the lowest error rate. According to the visible light communication receiving device for fully automatically tracking the light source, the three photoelectric detectors are used for detecting received light signals, the direction with the highest communication quality is determined, the receiving faces of the light detection units face the light source all the time, the signals are received on an orthoptic link, and the communication quality of a visible light communication system is improved.
Description
technical field [0001] The invention relates to the technical field of visible light communication, in particular to a visible light communication receiving device for fully automatic tracking of a light source. Background technique [0002] Indoor visible light communication is a new type of optical communication technology that uses LEDs as the light source for lighting and communication. Among them, RGB-LEDs can realize parallel signal transmission of multiple colors, thus greatly improving the system communication rate. However, in the communication process, the existing receivers can generally only be placed in a small horizontal range under the light source, and placed at a fixed height. If it exceeds this range, the receiver cannot receive signals correctly, which is very serious. The ground restricts the mobility of receivers and the practicality of VLC systems. Contents of the invention [0003] (1) Technical problems to be solved [0004] In view of this, the m...
Claims
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IPC IPC(8): H04B10/60H04B10/116G05D3/12
Inventor 高燕龙孙达施安存张运方李慧段靖远刘育梁
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI