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CN105812055A - Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module - Google Patents

Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module Download PDF

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Publication number
CN105812055A
CN105812055A CN 201610200828 CN201610200828A CN105812055A CN 105812055 A CN105812055 A CN 105812055A CN 201610200828 CN201610200828 CN 201610200828 CN 201610200828 A CN201610200828 A CN 201610200828A CN 105812055 A CN105812055 A CN 105812055A
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light
system
method
visible
duplex
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CN 201610200828
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Chinese (zh)
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李上宾
徐正元
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中国科学技术大学
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114Indoor or close-range type systems
    • H04B10/116Visible light communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16Half-duplex systems; Simplex-duplex switching; Transmission of break signals non automatically inverting the direction of transmission

Abstract

The invention discloses a half-duplex time division bidirectional visible light communication method and system of an RGB LED module. When REB LEDs work in a half-duplex mode, the REB LEDs can transmit data as light sources and also can receive data as photoelectric detectors, and therefore, the cost of the extra photoelectric detectors is reduced. Compared with the method and the system for providing uplink service by using infrared light or WiFi in existing visible light communication, the method and the system have the advantages that extra transmission media are unnecessary, both of an uplink and a downlink transmit the data by using visible light, and the realization complexity of the system is effectively reduced.

Description

半双工时分RGB LED模组双向可见光通信的方法及系统 The method of time-division half-duplex bidirectional RGB LED module and system for visible light communication

技术领域 FIELD

[0001 ] 本发明涉及可见光通信领域,尤其涉及一种半双工时分RGB LED模组双向可见光通信的方法及系统。 [0001] The present invention relates to visible light communication, and in particular relates to a method and system for RGB LED module division half-duplex bidirectional visible light communication.

背景技术 Background technique

[0002]可见光通信技术是一种将强度信号调制到可见光LED上,采用光电探测设备进行检测的通信技术。 [0002] The visible light communication technology is a signal modulated onto the intensity of visible light LED, using a photodetection device for detecting communication techniques. LED因其较高的光效、低功耗、较长的使用寿命、绿色节能,很有可能成为新的照明光源。 LED because of its high luminous efficiency, low power consumption, long life, green energy is likely to become the new lighting. 结合LED的可见光通信技术一方面发挥了LED的照明优势,同时将通信功能与照明技术相结合,吸引了科学界的广泛关注与研究。 Combined with LED visible light communication technology has played a hand of LED lighting advantage, while the communication functions and lighting technology, has attracted wide attention and research of the scientific community. 随着对可见光通信技术研究的深入与逐步成熟,可见光通信技术也逐步吸引了工业界的重视。 With the in-depth study of visible light and communication technology matures, visible light communication technology has gradually attracted industry attention.

[0003]目前,对可见光通信的研究大多集中于如何提高通信系统的传输速率上,局限性在于,其中的LED大多作为发送光源,提供单向下行链路的数据传输服务。 [0003] Currently, research on visible light communication mostly concentrated on ways to increase the transmission rate of the communication system, the limitations of that in which most of the LED light source as the transmission, providing data transmission services unidirectional downlink. 实际的通信系统,不仅需要下行链路,同时还须提供上行链路的数据传输服务。 Actual communication system, not only the downlink, while must provide uplink data transmission service. 已有相关的研究,利用红外光或Wifi,提供上行链路的数据传输服务,作为可见光通信技术的一种辅助,实际上,这种多模的通信系统实现复杂度无疑很高。 Studies have been associated, using infrared light or Wifi, providing the uplink data transmission services, as an adjunct visible light communication technology, in fact, such multi-mode communication system is undoubtedly the high implementation complexity. 另外,虽然已经有文献研究了R/G/B LED同时作为信号发送和信号接收器件。 Furthermore, although the literature has R / G / B LED as both signal transmission and signal reception device. 但是,这些文献中的R/G/B不同颜色LED都是独立驱动的,独立驱动的不同颜色LED间会产生光信号的干扰,降低了可见光通信系统的信干噪比。 However, these documents R / G / B LED of different colors are independently driven, the separate drive different color LED light produce interference signal, reduce the visible light communication system is the signal to interference noise ratio.

发明内容 SUMMARY

[0004]本发明的目的是提供一种半双工时分RGB LED模组双向可见光通信的方法及系统,具有低复杂度与低成本的优点。 [0004] The object of the present invention is to provide a two-way half-duplex time division RGB LED module and system for visible light communication method, has the advantage of low complexity and low cost.

[0005]本发明的目的是通过以下技术方案实现的: [0005] The object of the present invention is achieved by the following technical solution:

[0006] 一种半双工时分RGB LED模组双向可见光通信的方法,包括: [0006] LED module bidirectional half-duplex communication method for time division visible RGB, comprising:

[0007]采用时分复用的方式将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; [0007] The time-division multiplexing the time is divided into two equal length time slice, a time slice in which the uplink data transmission, another time slice downlink data transmission;

[0008]在下行链路的数据传输中,通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信号进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; [0008] In the downlink data transmission, by increasing the constant forward bias voltage at the first RGB LED, such that light exhibits a first characteristic RGB LED, and a first modulated signal and then through the driving module the first loaded onto a first demultiplexer RGB LED, the data transmission is completed; by adding a certain reverse bias voltage on the second RGB LED, such that the second photodetector presenting RGB LED characteristics, the first RGB LED transmitted data signal is detected, then the received data signal is completed by the second receiving module via a second splitter;

[0009]在上行链路的数据传输中,通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 [0009] In the uplink data transmission by increasing in a certain forward bias voltage on the second RGB LED, such that light exhibits a second characteristic RGB LED, the modulated signal through the driver module and then through a second the second splitter loaded onto a second RGB LED, the data transmission is completed; by adding a certain reverse bias voltage at the first RGB LED, such that a first photodetector exhibits characteristic RGB LED, a second RGB LED transmitted data signal is detected, then the received data signal via the first splitter is completed by the first receiving module.

[0010] 进一步的,第一与第二RGB LED均由串联连接的三色RGB LED组成。 [0010] Further, the first and second RGB LED connected in series by three-color RGB LED components.

[0011] 进一步的,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 [0011] Further, the first and second splitter contains a switch chip, and comprises A, B, C three ports, wherein the switch chip connection port A, B and C through the switch port chip rises A port to communicate with the down state.

[0012] 进一步的,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光。 [0012] Further, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white light.

[0013]进一步的,反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 [0013] Further, when the reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.

[0014] 一种半双工时分RGB LED模组双向可见光通信的系统,包括: [0014] RGB LED module division half-duplex bidirectional visible light communication system, comprising:

[0015]由第一分路器、第一RGB LED、第一接收模块与第一驱动模块组成的第一RGB LED模组,以及由第二分路器、第二RGB LED、第二接收模块与第二驱动模块组成的第二RGB LED模组; [0015] by a first splitter, a first RGB LED, a first receiving module and the first module of the first driving RGB LED module, and a second splitter, the second RGB LED, a second receiving module and a second driving RGB LED module of the second module;

[0016]采用时分复用的方式将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; [0016] The time-division multiplexing the time is divided into two equal length time slice, a time slice in which the uplink data transmission, another time slice downlink data transmission;

[0017]在下行链路的数据传输中,第一RGB LED模组作为数据发送端,第二RGB LED模组作为数据接收端;通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信号进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; [0017] In downlink data transmission, the first RGB LED module as a data transmission terminal, a second RGB LED module as a data receiving terminal; by the first RGB LED to increase certain forward bias voltage, so that the light exhibits a first characteristic RGB LED, the modulated signals are then loaded into the first module via a first driver on a first splitter RGB LED, the data transmission is completed; by increasing the second RGB LED certain reverse bias voltage, so that the second photodetector exhibits characteristic RGB LED, a first data signal RGB LED transmission is detected, then the received data signal is completed by the second receiving module via a second splitter;

[0018]在上行链路的数据传输中,第二RGB LED模组作为数据发送端,第一RGB LED模组作为数据接收端;通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 [0018] In the uplink data transmission, the second RGB LED module as a data transmission side, a first RGB LED module as a data receiving terminal; through on the second RGB LED to increase certain forward bias voltage, such that light exhibits a second characteristic RGB LED, and a second modulation signal by driving a second splitter module loaded onto a second RGB LED, complete re-transmission data via; by increasing the first RGB LED certain reverse bias voltage, so that the first photodetector exhibits characteristic RGB LED, a second data signal RGB LED transmission is detected, then the received data signals is completed by the first receiving module via the first splitter.

[0019] 进一步的,第一与第二RGB LED均由串联连接的三色RGB LED组成。 [0019] Further, the first and second RGB LED connected in series by three-color RGB LED components.

[°02°] 进一步的,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 [° 02 °] Further, the first and second splitter contains a switch chip, and comprises A, B, C three ports, Port A is connected to the switch chip, B and C through the switch port chip It rises and falls with the state of communication port A.

[0021] 进一步的,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光。 [0021] Further, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white light.

[0022]进一步的,反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 [0022] Further, when the reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.

[0023]由上述本发明提供的技术方案可以看出,RGB LED工作在半双工模式下,既能作为光源发送数据,也能作为光电探测器接收数据,节约了额外光电探测器的成本;与已有的可见光通信中利用红外光或Wifi提供上行链路服务相比,本发明无需额外的传输媒介,上行链路和下行链路都采用可见光进行数据传输,有效降低了系统实现的复杂度。 [0023] provided by the present invention of the above it can be seen, RGB LED work in half duplex mode, both as a source of data transmission, data can be received as a photodetector, additional cost savings photodetector; existing in a visible light communication using infrared light or Wifi provide uplink services in comparison to the present invention, no additional transmission medium, both uplink and downlink data transmission using visible light, effectively reducing the complexity of system implementation . 此外,本方案中R/G/B LED不同颜色的LED彼此串联在一起,这种结构可以改善R/G/B LED同时作为无线光信号发送和无线光信号接收端的可见光通信系统的抗干扰能力。 Anti-interference ability of the visible light communication system In addition, the present embodiment R / G / B LED LED series of different colors to each other, this configuration can improve the R / G / B LED simultaneously as a wireless optical signal transmission and radio signal receiving terminal optical .

附图说明 BRIEF DESCRIPTION

[0024]为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他附图。 [0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, briefly describes the accompanying drawings required for describing the embodiments used in the following embodiments will be apparent in the following description of the accompanying drawings are merely some embodiments of the present invention. embodiment, those of ordinary skill in the art is concerned, without creative efforts, other figures may also be obtained according to these drawings.

[0025]图1为本发明实施例提供的一种半双工时分RGB LED模组双向可见光通信的原理示意图; [0025] FIG. 1 is a schematic principle of a half-duplex time division RGB LED module provides bi-directional communication embodiment of the present invention, the visible light;

[0026]图2为本发明实施例提供的分路器示意图; [0026] FIG. 2 is a schematic splitter according to an embodiment of the present invention;

[0027]图3为本发明实施例提供的数据接收端与数据发送端时间同步建立阶段的示意图; [0027] FIG. 3 provides a schematic view of the data receiving terminal and the data transmission end time synchronization establishment phase embodiment of the invention;

[0028]图4为本发明实施例提供的双向链路建立阶段的示意图。 [0028] FIG 4 provides a schematic view of a bidirectional link establishment phase of the embodiment of the present invention.

具体实施方式 detailed description

[0029]下面结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0029] Next, in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention rather than all embodiments . 基于本发明的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明的保护范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0030]本发明实施例提供一种半双工时分RGB LED模组双向可见光通信的方法,其包括: [0030] Example embodiments of the present invention provides a method of visible light communication LED module bidirectional half-duplex time division RGB, comprising:

[0031]采用时分复用的方式将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; [0031] The time-division multiplexing the time is divided into two equal length time slice, a time slice in which the uplink data transmission, another time slice downlink data transmission;

[0032]如图1所示,在下行链路的数据传输中,通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信号进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; [0032] 1, in the downlink data transmission by increasing in a certain forward bias voltage on the first RGB LED, such that light exhibits a first characteristic RGB LED, the modulated signal a first driving module reloaded via the first splitter to the first RGB LED, the data transmission is completed; by adding a certain reverse bias voltage on the second RGB LED, such that the second RGB LED presentation photodetection characteristic, a first data signal RGB LED transmission is detected, then the received data signal is completed by the second receiving module via a second splitter;

[0033]在上行链路的数据传输中,通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 [0033] In the uplink data transmission by increasing in a certain forward bias voltage on the second RGB LED, such that light exhibits a second characteristic RGB LED, the modulated signal through the driver module and then through a second the second splitter loaded onto a second RGB LED, the data transmission is completed; by adding a certain reverse bias voltage at the first RGB LED, such that a first photodetector exhibits characteristic RGB LED, a second RGB LED transmitted data signal is detected, then the received data signal via the first splitter is completed by the first receiving module.

[0034] 本发明实施例中,第一与第二RGB LED均由串联连接的三色RGB LED组成;这种结构可以改善R/G/B LED同时作为无线光信号发送和无线光信号接收端的可见光通信系统的抗干扰能力。 [0034] The embodiments of the present invention, the first and second RGB LED connected in series by three-color RGB LED composition; such a configuration can improve the R / G / B LED simultaneously as a wireless optical signal transmission and radio signal receiving terminal optical anti-interference ability of the visible light communication system.

[0035]如图2所不,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 [0035] FIG. 2 is not, the first and second splitter contains a switch chip, and comprises A, B, C three ports, wherein the switch chip connection port A, B and C through the switch port chip It rises and falls with the state of communication port a.

[0036] 本发明实施例中,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光;反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 [0036] In embodiments of the invention, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white; reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.

[0037]优选的,在进行数据传输之前,还需要进行数据接收端与数据发送端的时间同步,其过程如图3所示。 [0037] Preferably, prior to data transmission, but also the data receiving end for time synchronization with the data transmitting side, the process shown in FIG. 之后,再建立如图4所示的双向链路进行数据传输。 Thereafter, and then establishing a bidirectional link shown in FIG. 4 for data transmission.

[0038]另一方面,本发明实施例还提供与前述方法相对应的一种半双工时分RGB LED模组双向可见光通信的系统,其包括: [0038] On the other hand, embodiments of the present invention further provides the aforementioned method corresponding RGB LED module division half-duplex bidirectional visible-light communication system, comprising:

[0039]采用时分复用的方式由第一分路器、第一RGB LED、第一接收模块与第一驱动模块组成的第一RGB LED模组,以及由第二分路器、第二RGB LED、第二接收模块与第二驱动模块组成的第二RGB LED模组; [0039] The time division multiplexing manner by a first splitter, a first RGB LED, a first receiving module and the first module of the first driving RGB LED module, and a second splitter, the second RGB LED, a second receiving module and a second module consisting of a second driving RGB LED module;

[0040]将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; [0040] The time is divided into two equal length time slice, a time slice wherein the uplink data transmission, another time slice downlink data transmission;

[0041]同样参见图1,在下行链路的数据传输中,第一RGB LED模组作为数据发送端,第二RGB LED模组作为数据接收端;通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信号进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; [0041] Referring to FIG. 1 Similarly, in the downlink data transmission, a first RGB LED module as a data transmission terminal, a second RGB LED module as a data receiving terminal; by the first RGB LED must increase forward bias voltage, such that the light exhibits a first characteristic RGB LED, a first modulated signal splitter and loaded onto a first RGB LED, to complete transmission of data through the first and then through the driving module; by the first add two RGB LED on a certain reverse bias voltage, so that the second photodetector exhibits characteristic RGB LED, a first data signal RGB LED transmission is detected, then the data is completed by the second receiving module via the second splitter a received signal;

[0042]在上行链路的数据传输中,第二RGB LED模组作为数据发送端,第一RGB LED模组作为数据接收端;通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 [0042] In the uplink data transmission, the second RGB LED module as a data transmission side, a first RGB LED module as a data receiving terminal; through on the second RGB LED to increase certain forward bias voltage, such that light exhibits a second characteristic RGB LED, and a second modulation signal by driving a second splitter module loaded onto a second RGB LED, complete re-transmission data via; by increasing the first RGB LED certain reverse bias voltage, so that the first photodetector exhibits characteristic RGB LED, a second data signal RGB LED transmission is detected, then the received data signals is completed by the first receiving module via the first splitter.

[0043] 本发明实施例中,第一与第二RGB LED均由串联连接的三色RGB LED组成。 [0043] The embodiments of the present invention, the first and second RGB LED connected in series by three-color RGB LED components.

[0044]同样参见图2,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 [0044] Referring also to FIG. 2, the first and second splitter contains a switch chip, and comprises A, B, C three ports, Port A is connected to the switch chip, B and C through the switch port chip It rises and falls with the state of communication port A.

[0045] 本发明实施例中,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光;反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 [0045] The embodiment of the present invention, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white; reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.

[0046]优选的,在进行数据传输之前,还需要进行数据接收端与数据发送端的时间同步,其过程参见图3。 [0046] Preferably, prior to data transmission, but also the data receiving end for time synchronization with the transmitting side data, which refer to FIG. 3. 之后,再建立如图4所示的双向链路进行数据传输。 Thereafter, and then establishing a bidirectional link shown in FIG. 4 for data transmission.

[0047]另外,本领域技术人员可以理解,本发明实施例所出现的第一、第二仅用于区分相同的器件。 [0047] Further, those skilled in the art will appreciate, embodiments of the present invention appearing first, second only used to distinguish identical devices.

[0048]以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明披露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。 [0048] The above are only the preferred specific embodiments of the invention, but the scope of the present invention is not limited thereto, any skilled in the art in the art within the technical scope disclosed in the present invention can be easily thought variations or replacements shall fall within the protection scope of the present invention. 因此,本发明的保护范围应该以权利要求书的保护范围为准。 Accordingly, the scope of the present invention, the scope of the claims should prevail.

Claims (10)

1.一种半双工时分RGB LED模组双向可见光通信的方法,其特征在于,包括: 采用时分复用的方式将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; 在下行链路的数据传输中,通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信号进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; 在上行链路的数据传输中,通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加 An RGB LED module division half-duplex bidirectional visible light communication method, characterized by comprising: a time division multiplexing manner as long as the time is divided into two time slices, wherein a time slice data uplink transmission, another time slice downlink data transmission; data transmission in the downlink, by increasing the constant forward bias voltage at the first RGB LED, such that light exhibits a first characteristic RGB LED, the modulated signal by a first driving module via the first splitter and then loaded onto a first RGB LED, transmitted data is completed; by adding a certain reverse bias voltage on the second RGB LED, such that the second RGB LED exhibits characteristic photodetector, a first data signal RGB LED transmission is detected, then the received data signal is completed by the second receiving module via a second splitter; data transmission in the uplink, by the increasing said certain forward bias voltage to the second RGB LED, such that light exhibits a second characteristic RGB LED, and the modulation signal applied via the second splitter and then through a second driving module 载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 RGB LED to the second carrier, the data transmission is completed; by adding a certain reverse bias voltage at the first RGB LED, such that a first photodetector RGB LED exhibits characteristic, the second data transmitted RGB LED signal is detected, then the received data signal via the first splitter is completed by the first receiving module.
2.根据权利要求1所述的方法,其特征在于,第一与第二RGB LED均由串联连接的三色RGB LED组成。 2. The method according to claim 1, characterized in that the first and second RGB LED connected in series by three-color RGB LED components.
3.根据权利要求1所述的方法,其特征在于,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 3. The method according to claim 1, characterized in that the first and second splitter contains a switch chip, and comprises A, B, C three ports, wherein the switch chip connection port A, port B and C to port a in communication with the state of the switch by lifting and dropping the chip.
4.根据权利要求1所述的方法,其特征在于,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光。 4. The method according to claim 1, wherein, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white light.
5.根据权利要求1所述的方法,其特征在于,反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 5. The method according to claim 1, wherein, when the reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.
6.一种半双工时分RGB LED模组双向可见光通信的系统,其特征在于,包括: 由第一分路器、第一RGB LED、第一接收模块与第一驱动模块组成的第一RGB LED模组,以及由第二分路器、第二RGB LED、第二接收模块与第二驱动模块组成的第二RGB LED模组; 采用时分复用的方式将时间分成等长的两个时间切片,其中一个时间切片进行上行链路的数据传输,另一个时间切片进行下行链路的数据传输; 在下行链路的数据传输中,第一RGB LED模组作为数据发送端,第二RGB LED模组作为数据接收端;通过在所述第一RGB LED上增加一定的正向偏置电压,使得第一RGB LED呈现光源特性,并将调制信号通过第一驱动模块再经由第一分路器加载到第一RGB LED上,完成数据的发送;通过在所述第二RGB LED上增加一定的反向偏置电压,使得第二RGB LED呈现光电探测器特性,对第一RGB LED发送的数据信 A time-division half-duplex bi-directional system RGB LED module visible light communication, characterized by comprising: a first splitter by a first RGB LED, a first RGB LED, a first receiving module of the first drive module module, and a second splitter, the second RGB LED, a second receiving module and a second module consisting of a second driving RGB LED module; using time division multiplex time is divided into two equal length time slices wherein a time slice uplink data transmission, another time slice downlink data transmission; in downlink data transmission, the first RGB LED module as a data transmission terminal, a second RGB LED die set as a data receiving terminal; constant by increasing the forward bias voltage at the first RGB LED, such that light exhibits a first characteristic RGB LED, the modulated signal of the first splitter by a first drive module is loaded again via RGB LED to the first, the transmission data is completed; by adding a certain reverse bias voltage on the second RGB LED, such that the second photodetector RGB LED exhibits characteristics of a first data signal transmitted RGB LED 进行检测,再经由第二分路器由第二接收模块完成数据信号的接收; 在上行链路的数据传输中,第二RGB LED模组作为数据发送端,第一RGB LED模组作为数据接收端;通过在所述第二RGB LED上增加一定的正向偏置电压,使得第二RGB LED呈现光源特性,并将调制信号通过第二驱动模块再经由第二分路器加载到第二RGB LED上,完成数据的发送;通过在所述第一RGB LED上增加一定的反向偏置电压,使得第一RGB LED呈现光电探测器特性,对第二RGB LED发送的数据信号进行检测,再经由第一分路器由第一接收模块完成数据信号的接收。 Is detected, then the received data signal is completed by the second receiving module via a second splitter; uplink data transmission, the second RGB LED module as a data transmission terminal, a first receiving data as RGB LED module end; constant by increasing the forward bias voltage on the second RGB LED, such that light exhibits a second characteristic RGB LED, and a second modulated signal and then through a second driver module is loaded into the second RGB splitter on the LED, the data transmission is completed; by adding a certain reverse bias voltage at the first RGB LED, such that a first photodetector exhibits characteristic RGB LED, a second data signal RGB LED transmission is detected, then received data signal is completed by the first receiving module via the first splitter.
7.根据权利要求6所述的系统,其特征在于,第一与第二RGB LED均由串联连接的三色RGB LED组成。 7. The system according to claim 6, characterized in that the first and second RGB LED connected in series by three-color RGB LED components.
8.根据权利要求6所述的系统,其特征在于,第一与第二分路器内含一开关芯片,且包含A、B、C三个端口,其中,端口A与开关芯片连接,端口B与C通过开关芯片的升起与落下状态来与端口A连通。 8. The system according to claim 6, characterized in that the first and second splitter contains a switch chip, and comprises A, B, C three ports, wherein the switch chip connection port A, port B and C to port a in communication with the state of the switch by lifting and dropping the chip.
9.根据权利要求6所述的系统,其特征在于,正向偏置电压驱动时RGB LED发出显色为90以上,色温为3000K-5000K的白光。 9. The system according to claim 6, wherein, when the forward bias voltage of the driving RGB LED emits a color of 90 or more, a color temperature of 3000K-5000K white light.
10.根据权利要求6所述的系统,其特征在于,反向偏置电压驱动时RGB LED的光电转换效率大于0.4A/W。 10. The system according to claim 6, wherein, when the reverse bias voltage of the driving RGB LED photoelectric conversion efficiency is greater than 0.4A / W.
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