Multi-user optical wireless two-way data communication system and method
A technology of optical wireless and data communication, applied in the direction of optical fiber transmission, free space transmission, etc., can solve problems such as no solution, and achieve the effect of multi-user optical wireless two-way data communication
Inactive Publication Date: 2013-05-01
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology
[0003] At present, the one-way transmission system based on lighting white LED or the simple point-to-point two-way transmission system has been proposed at home and abroad. no solution yet
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[0036] 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.
[0037] Such as figure 1 as shown, figure 1 It is a schematic structural diagram of an optical wireless two-way data communication system based on illuminating white light LEDs according to an embodiment of the present invention, and the system includes:
[0038] An access controller 1, the access controller 1 is connected to the external network 6;
[0039] A plurality of white LED lighting sources 2, the white LED lighting sources 2 are connected to the access controller 1;
[0040] A plurality of optical detectors 3, the optical detectors 3 are connected to the access controller 1;
[0041] a plurality of adapters 4; and
[0042] A plurality of user equipment 5, the user equipment 5 is connected to the adapter 4, an...
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The invention discloses a multi-user optical wireless two-way data communication system and a method based on a lighting white light LED. The system comprises one access controller which is connected with an external network, a plurality of white light LED lighting light sources which are connected with the access controller, a plurality of optical detectors which are connected with the access controller, a plurality of adapters and a plurality of pieces of user equipment which are connected with the adapters and send and receive data through the adapters; wherein the access controller and the adapters are provided with optical wireless communication protocol modules; and the optical wireless communication protocol modules control data frames to be transmitted from a downlink which is from the white light LED lighting light sources to the adapters to an uplink which is from the adapters to the optical detectors. The invention realizes the multi-use optical wireless two-way data transmission based on the lighting white light LED.
Description
technical field [0001] The invention relates to the technical field of semiconductor lighting white light LEDs, in particular to a multi-user optical wireless two-way data communication system and method based on lighting white light LEDs. Background technique [0002] At present, white light semiconductor light-emitting diodes (LEDs) are gradually replacing traditional fluorescent lamps and halogen lamps with their green environmental protection and low power consumption, becoming the next generation of lighting sources. Another important feature of LED that is different from other lighting sources is that it can be modulated at high speed (MHz). The free-space optical wireless communication can be realized by using the illuminating white light LED as the signal transmitter. Compared with the current mainstream radio frequency wireless technology, this optical wireless has the advantages of high bandwidth, no electromagnetic pollution, and better confidentiality. [0003]...
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IPC IPC(8): H04B10/25H04B10/11
Inventor 王锐段靖远施安存金钰刘育梁
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI