WO2015109728A1 - 采用可见光实现通信的无辐射通信终端和通信系统 - Google Patents

采用可见光实现通信的无辐射通信终端和通信系统 Download PDF

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Publication number
WO2015109728A1
WO2015109728A1 PCT/CN2014/079555 CN2014079555W WO2015109728A1 WO 2015109728 A1 WO2015109728 A1 WO 2015109728A1 CN 2014079555 W CN2014079555 W CN 2014079555W WO 2015109728 A1 WO2015109728 A1 WO 2015109728A1
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WIPO (PCT)
Prior art keywords
visible light
communication
resistor
comparator
triode
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PCT/CN2014/079555
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English (en)
French (fr)
Inventor
赵士青
罗德祥
胡学龙
郭爱平
Original Assignee
惠州Tcl移动通信有限公司
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Application filed by 惠州Tcl移动通信有限公司 filed Critical 惠州Tcl移动通信有限公司
Priority to EP14846725.1A priority Critical patent/EP3104536A4/en
Priority to US14/443,238 priority patent/US9577754B2/en
Publication of WO2015109728A1 publication Critical patent/WO2015109728A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication

Definitions

  • the present invention relates to communication technologies, and in particular to a radiation-free communication terminal and communication system that implements communication using visible light.
  • communication terminals such as mobile phones have developed into one or more state of human hands, and communication terminals have become an indispensable communication tool in people's lives and work.
  • communication terminals such as mobile phones use radio waves as a medium for communication. It is well known that the radiation of radio frequency waves is very large, affecting human health, and the quality of communication is greatly affected by signal quality. It can be seen that there are still many unsatisfactory radio frequency communication technologies. The place.
  • an object of the present invention is to provide a radiation-free communication terminal and a communication system that realize communication by using visible light, and realize communication by using visible light to solve the radiation problem of the existing communication terminal.
  • a radiation-free communication terminal that implements communication using visible light comprising:
  • a visible light emitting module for emitting visible light
  • a visible light receiving module for receiving visible light and converting the visible light into an electrical signal
  • a central processor for controlling an operating state of the visible light emitting module and the visible light receiving module, and processing data transmitted, received, and received by the visible light;
  • the visible light emitting module and the visible light receiving module are respectively connected to the central processing unit.
  • the visible light emitting module includes: a light emitting diode and a high speed switch.
  • the anode of the LED is grounded, the anode of the LED is connected to the first end of the high speed switch, and the second end of the high speed switch and the control end of the high speed switch are respectively connected to the central processor.
  • the central processing unit includes a resistance adjustment unit, and the resistance adjustment unit is connected to the second end of the high-speed switch.
  • the central processor when the central processor outputs a high level to the control end of the high-speed switch, the light-emitting diode is lit; the central processor is to the high-speed When the control terminal of the switch outputs a low level, the LED is extinguished.
  • the visible light receiving module includes:
  • a visible light receiving unit for receiving visible light and converting the visible light into an electrical signal
  • An amplifying unit for amplifying the electrical signal output by the visible light receiving unit
  • a comparator for performing quantization processing on a signal processed by the amplification unit
  • the visible light receiving unit is connected to the negative input end of the comparator through the amplifying unit, the positive input end of the comparator is connected to the reference voltage end, and the output end of the comparator is connected to the central processing unit.
  • the output of the comparator In the non-radiation communication terminal that realizes communication by using visible light, when the result of the quantization process of the comparator is that there is visible light, the output of the comparator outputs a high level to the central processor. When the result of the quantization process of the comparator is that there is no visible light, the output of the comparator outputs a low level to the central processing unit.
  • the visible light receiving unit includes: a photodiode and a first resistor,
  • the cathode of the photodiode is connected to the VCC power supply end, and the anode of the photodiode is connected to the amplifying unit, and the anode of the photodiode is also grounded through the first resistor.
  • the amplifying unit includes a triode and a second resistor.
  • the base of the triode is connected to the anode of the photodiode, the base of the triode is also grounded through the first resistor, and the collector of the triode is connected to the VCC supply terminal through the second resistor.
  • the collector of the transistor is also connected to the negative input of the comparator, the emitter of which is grounded.
  • the visible light receiving unit includes: a phototransistor, a third resistor, and a fourth resistor.
  • the collector of the phototransistor is connected to the VCC power supply terminal through the third resistor, and the emitter of the phototransistor is grounded through the fourth resistor, and the base of the phototransistor receives an external visible light signal.
  • the amplifying unit includes a triode and a fifth resistor.
  • the base of the triode is connected to the emitter of the phototransistor, the base of the triode is also grounded through the fourth resistor, and the collector of the triode is connected to the VCC power supply terminal through the fifth resistor.
  • the collector of the transistor is also connected to the negative input of the comparator, the emitter of which is grounded.
  • the present invention also provides a radiation-free communication system that implements communication using visible light, comprising: at least two non-radiative communication terminals, wherein the non-radiative communication terminals communicate using visible light;
  • the non-radiative communication terminal for realizing communication by using visible light includes:
  • a visible light emitting module for emitting visible light
  • a visible light receiving module for receiving visible light and converting the visible light into an electrical signal
  • a central processor for controlling an operating state of the visible light emitting module and the visible light receiving module, and processing data transmitted, received, and received by the visible light;
  • the visible light emitting module and the visible light receiving module are respectively connected to the central processing unit.
  • the visible light emitting module includes: a light emitting diode and a high speed switch.
  • the anode of the LED is grounded, the anode of the LED is connected to the first end of the high speed switch, and the second end of the high speed switch and the control end of the high speed switch are respectively connected to the central processor.
  • the central processing unit includes a resistance adjustment unit that is connected to the second end of the high-speed switch.
  • the central processor when the central processor outputs a high level to the control terminal of the high-speed switch, the light-emitting diode is lit; the central processor is When the control terminal of the high speed switch outputs a low level, the light emitting diode is turned off.
  • the visible light receiving module includes:
  • a visible light receiving unit for receiving visible light and converting the visible light into an electrical signal
  • An amplifying unit for amplifying the electrical signal output by the visible light receiving unit
  • a comparator for performing quantization processing on a signal processed by the amplification unit
  • the visible light receiving unit is connected to the negative input end of the comparator through the amplifying unit, the positive input end of the comparator is connected to the reference voltage end, and the output end of the comparator is connected to the central processing unit.
  • the output of the comparator when the result of the quantization process of the comparator is that there is visible light, the output of the comparator outputs a high level to the central processing. As a result of the quantization process of the comparator, when there is no visible light, the output of the comparator outputs a low level to the central processor.
  • the visible light receiving unit includes: a photodiode and a first resistor,
  • the cathode of the photodiode is connected to the VCC power supply end, and the anode of the photodiode is connected to the amplifying unit, and the anode of the photodiode is also grounded through the first resistor.
  • the amplifying unit includes a triode and a second resistor
  • the base of the triode is connected to the anode of the photodiode, the base of the triode is also grounded through the first resistor, and the collector of the triode is connected to the VCC supply terminal through the second resistor.
  • the collector of the transistor is also connected to the negative input of the comparator, the emitter of which is grounded.
  • the visible light receiving unit includes: a phototransistor, a third resistor, and a fourth resistor.
  • the collector of the phototransistor is connected to the VCC power supply terminal through the third resistor, and the emitter of the phototransistor is grounded through the fourth resistor, and the base of the phototransistor receives an external visible light signal.
  • the amplifying unit includes a triode and a fifth resistor.
  • the base of the triode is connected to the emitter of the phototransistor, the base of the triode is also grounded through the fourth resistor, and the collector of the triode is connected to the VCC power supply terminal through the fifth resistor.
  • the collector of the transistor is also connected to the negative input of the comparator, the emitter of which is grounded.
  • the present invention provides a non-radiative communication terminal and a communication system that realize communication by using visible light, and emit visible light through a visible light emitting module, and process and receive signals received by the visible light receiving module when the visible light receiving module receives visible light.
  • the visible light communicates with other visible light communication terminals, and realizes the advantages of no radiation, saving frequency resources, stable and reliable communication performance, low communication cost, and high communication transmission rate.
  • FIG. 1 is a circuit schematic diagram of a non-radiative communication terminal for realizing communication using visible light.
  • FIG. 2 is a circuit diagram of a first preferred embodiment of a visible light receiving module in a non-radiative communication terminal that implements communication using visible light.
  • FIG. 3 is a circuit diagram of a second preferred embodiment of a visible light receiving module in a non-radiative communication terminal using visible light for communication.
  • the present invention provides a non-radiation communication terminal and a communication system that realize communication by using visible light.
  • the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • the invention provides a non-radiation communication terminal that realizes communication by using visible light, uses visible light to communicate, transmits information through visible light to realize voice and data communication, solves the radiation problem of the communication terminal, truly realizes healthy and radiation-free communication, and fully utilizes natural resources. Use it to save limited frequency resources.
  • FIG. 1 is a circuit schematic diagram of a non-radiative communication terminal for realizing communication by using visible light.
  • the non-radiative communication terminal of the present invention for realizing communication by using visible light includes: a visible light emitting module 10, a visible light receiving module 20, and a central processing unit 30, wherein the visible light emitting module 10 and the visible light receiving module 20 are connected to the central portion. Processor 30.
  • the central processing unit 30 is configured to control the working state of the visible light emitting module 10, and when the central processing unit 30 controls the visible light emitting module 10 to operate, the visible light emitting module 10 emits visible light outward; when the central processing unit 30 controls visible light emission. When the module 10 stops operating, the visible light emitting module 10 stops emitting visible light.
  • the visible light receiving module 20 is configured to receive visible light and convert the visible light into an electrical signal for transmission to the central processing unit 30.
  • the central processing unit 30 is further configured to process the signal received by the visible light receiving module 20 to utilize visible light to communicate with other visible light. Terminal communication.
  • the visible light emitting module 10 includes: a light emitting diode LED and a high speed switch K.
  • the negative pole of the light emitting diode LED is grounded, and the anode of the light emitting diode LED is connected to the first end of the high speed switch K, and the high speed switch K
  • the second end and the control end are connected to the central processing unit 30.
  • the central processing unit 30 controls the closing and opening states of the high-speed switch K by controlling the high and low levels to control the lighting and extinguishing of the LEDs.
  • the control pin D of the central processing unit 30 outputs a high level, The high-speed switch K is closed, so that the light-emitting diode LED is turned on.
  • the central processing unit 30 is provided with a resistance adjusting unit (not shown), the resistance adjusting unit is connected to the second end of the high-speed switch K, and the resistance is output through the resistance adjusting unit.
  • the resistance adjusting unit is an adjustable resistor R, and the adjustable resistor R is disposed in the central processor to automatically adjust the brightness of the visible light.
  • the resistance of the adjustable resistor R is smaller, the brightness of the LED is The brighter the brightness of the adjustable resistor R is, the darker the brightness of the LED is.
  • the adjustable resistor R can also be disposed outside the central processing unit to manually adjust the brightness of the visible light.
  • FIG. 2 is a circuit diagram of a first preferred embodiment of a visible light receiving module in a non-radiative communication terminal using visible light for communication.
  • the visible light receiving module 20 includes: a visible light receiving unit 201, an amplifying unit 202, and a comparator IC1.
  • the visible light receiving unit 201 is connected to a negative input end of the comparator IC1 through an amplifying unit 202, and a positive input of the comparator IC1
  • the terminal is connected to the reference voltage terminal, and the output of the comparator IC1 is connected to the central processing unit 30.
  • the visible light receiving unit 201 is configured to receive visible light, and convert the visible light into an electrical signal of a corresponding intensity according to the brightness of the visible light; the amplifying unit 202 is configured to amplify the electrical signal output by the visible light receiving unit 201;
  • the comparator IC1 is for performing quantization processing on the signal processed by the amplification unit 202, and the quantized signal is received by the central processing unit 30 and subjected to correlation processing.
  • the central processor 30 recognizes and processes the communication.
  • the existing radio frequency signal also processes the radio wave signal into "1" and "0" for processing by the central processing unit. Since the communication implementation process of the present invention is the same as the existing radio frequency signal, it will not be described herein.
  • the visible light receiving unit 201 includes a photodiode D1 and a first resistor R1.
  • the cathode of the photodiode D1 is connected to the VCC power supply terminal, and the anode of the photodiode D1 is connected to the amplification unit 202.
  • the anode of the photodiode D1 is also grounded through the first resistor R1.
  • the amplifying unit 202 includes a transistor Q1 and a second resistor R2.
  • the base of the transistor Q1 is connected to the anode of the photodiode D1, and the base of the transistor Q1 is also grounded through the first resistor R1.
  • the collector of the transistor Q1 The VCC power supply terminal is connected through a second resistor R2.
  • the collector of the transistor Q1 is also connected to the negative input terminal of the comparator IC1, and the emitter of the transistor Q1 is grounded.
  • the amplifying unit 202 can also be implemented in other manners, such as using an operational amplifier, and amplifying the weak electrical signal converted by the photodiode D1 according to an amplification factor by a corresponding multiple.
  • the amplifying unit 202 and the comparator IC1 may also be disposed in the central processing unit, which is not limited in the present invention.
  • the photodiode D1 When the photodiode D1 receives data from visible light, the visible light is converted into an electrical signal, and the electrical signal is amplified by a triode, and the corresponding voltage is output to the comparator IC1, which compares it with the reference voltage. Output 1 when the voltage value is greater than the reference voltage, and output 0 when the voltage value is less than or equal to the reference voltage, and the quantized signal is received by the central processing unit 30 and processed accordingly.
  • FIG. 3 is a circuit diagram of a second preferred embodiment of a visible light receiving module in a non-radiative communication terminal using visible light for communication.
  • the visible light receiving module of this embodiment includes a visible light receiving unit 301, an amplifying unit 302, and a comparator IC2.
  • the second preferred embodiment differs from the first preferred embodiment only in the electronic components used by the visible light receiving unit 301. Not the same.
  • the visible light receiving unit 301 includes: a phototransistor Q2, a triode Q3, a third resistor R3, and a fourth resistor R4.
  • the collector of the phototransistor Q2 is connected to the VCC power supply terminal through a third resistor R3, and the phototransistor
  • the emitter of Q2 is grounded through a fourth resistor R4, the base of which is received by an external visible light signal; the base of the transistor Q3 is connected to the emitter of phototransistor Q2.
  • the phototransistor Q2 When the phototransistor Q2 receives data from visible light, it converts the visible light into an electrical signal, and amplifies the electrical signal through the transistor Q3, and outputs a corresponding voltage to the comparator IC2, which compares it with the reference voltage. When the voltage value is greater than the reference voltage, the output 1 is output. When the voltage value is less than or equal to the reference voltage, the output 0 is output, and the quantized signal is received by the central processing unit 30 and subjected to related processing.
  • the non-radiative communication terminal that realizes communication by using visible light also has the same functional module as the existing radio frequency communication terminal, and uses radio waves for communication when it is unable to transmit and receive visible light.
  • the radiation-free communication terminal of the present invention also has a radio frequency module, a battery, a power manager, a motor, a microphone, a speaker, a USB interface, a SIM card slot, a touch display screen, an SD/MMC module, a camera, a RAM, a ROM, an XO, and the like.
  • the module because of its principle of using radio wave communication for calling, the principle of signal recognition (such as the non-radiative communication terminal of the present invention to identify the visible light signal emitted by the corresponding communication terminal), the principle of touch operation and the like are the same as the prior art, I will not go into details here.
  • the present invention also provides a communication system that implements communication using visible light, including at least two non-radiative communication terminals that communicate using visible light. Since the scheme of communication using visible light between the non-radiative communication terminals has been described in detail above, it will not be described here.
  • the non-radiative communication terminal and the communication system provided by the present invention using visible light to realize communication have the advantages of no radiation, saving frequency resources, stable and reliable communication performance, low communication cost, and high communication transmission rate.
  • the present invention since the visible light transmission rate is several hundred megahertz or even more than 1 Gbps, the present invention has the characteristics of high transmission rate, high stability of communication, and high reliability. And since the present invention does not need to occupy frequency resources, its communication cost is greatly reduced.

Abstract

本申请公开了采用可见光实现通信的无辐射通信终端和通信系统，其中，无辐射通信终端包括可见光发射模块、可见光接收模块以及中央处理器；可见光发射模块和可见光接收模块连接中央处理器。本申请利用可见光与其它可见光通信终端通信，实现了无辐射、节约了频率资源、通信性能稳定可靠、通信成本低、通信传输速率高等优点。

Description

采用可见光实现通信的无辐射通信终端和通信系统 技术领域
本发明涉及通信技术，特别涉及一种采用可见光实现通信的无辐射通信终端和通信系统。
 背景技术
随着科技社会的不断发展，手机等通信终端已发展到人手一部或多部的状态，通信终端已成为人们生活和工作中不可或缺的通信工具。目前手机等通信终端均采用无线电波作为介质进行通信，众所周知，射频电波的辐射非常大，影响人类身体健康，而且通信质量受信号质量的影响也很大，可见无线射频通信技术还存在许多不如人意的地方。
 技术问题
鉴于上述现有技术的不足之处，本发明的目的在于提供一种采用可见光实现通信的无辐射通信终端和通信系统，利用可见光实现通信，解决现有通讯终端产生辐射问题。
 技术解决方案
一种采用可见光实现通信的无辐射通信终端，其包括：
用于发射可见光的可见光发射模块；
用于接收可见光，并将所述可见光转换为电信号的可见光接收模块；以及
用于控制所述可见光发射模块和所述可见光接收模块的工作状态，及对通过所述可见光，发射和接收的数据进行处理的中央处理器；
所述可见光发射模块和可见光接收模块分别连接所述中央处理器。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述可见光发射模块包括：发光二极管和高速开关，
其中所述发光二极管的负极接地，所述发光二极管的正极连接所述高速开关的第一端，所述高速开关的第二端和所述高速开关的控制端分别连接所述中央处理器。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述中央处理器包括电阻调节单元，所述电阻调节单元连接所述高速开关的第二端。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述中央处理器向所述高速开关的控制端输出高电平时，所述发光二极管点亮；所述中央处理器向所述高速开关的控制端输出低电平时，所述发光二极管熄灭。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述可见光接收模块包括：
用于接收可见光，并将所述可见光转换为电信号的可见光接收单元；
用于将所述可见光接收单元输出的电信号进行放大处理的放大单元；以及
用于对所述放大单元处理的信号进行量化处理的比较器；
所述可见光接收单元通过所述放大单元连接所述比较器的负输入端，所述比较器的正输入端连接参考电压端，所述比较器的输出端连接所述中央处理器。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述比较器的所述量化处理的结果为有可见光时，则所述比较器的输出端输出高电平至所述中央处理器，所述比较器的所述量化处理的结果为没有可见光时，则所述比较器的输出端输出低电平至所述中央处理器。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述可见光接收单元包括：光敏二极管和第一电阻，
其中所述光敏二极管的负极连接VCC供电端，所述光敏二极管的正极连接所述放大单元、所述光敏二极管的正极还通过所述第一电阻接地。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述放大单元包括三极管和第二电阻，
其中所述三极管的基极连接所述光敏二极管的正极，所述三极管的基极还通过所述第一电阻接地，所述三极管的集电极通过所述第二电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述可见光接收单元包括：光敏三极管、第三电阻和第四电阻，
其中所述光敏三极管的集电极通过所述第三电阻连接VCC供电端，所述光敏三极管的发射极通过所述第四电阻接地，所述光敏三极管的基极接收外部的可见光信号。
本发明所述的采用可见光实现通信的无辐射通信终端中，所述放大单元包括三极管和第五电阻，
其中所述三极管的基极连接所述光敏三极管的发射极，所述三极管的基极还通过所述第四电阻接地，所述三极管的集电极通过所述第五电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
本发明还提供一种采用可见光实现通信的无辐射通信系统，其包括：至少两个无辐射通信终端，所述无辐射通信终端之间利用可见光进行通信；
其中所述采用可见光实现通信的无辐射通信终端包括：
用于发射可见光的可见光发射模块；
用于接收可见光，并将所述可见光转换为电信号的可见光接收模块；以及
用于控制所述可见光发射模块和所述可见光接收模块的工作状态，及对通过所述可见光，发射和接收的数据进行处理的中央处理器；
所述可见光发射模块和可见光接收模块分别连接所述中央处理器。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述可见光发射模块包括：发光二极管和高速开关，
其中所述发光二极管的负极接地，所述发光二极管的正极连接所述高速开关的第一端，所述高速开关的第二端和所述高速开关的控制端分别连接所述中央处理器。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述中央处理器包括电阻调节单元，所述电阻调节单元连接所述高速开关的第二端。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述中央处理器向所述高速开关的控制端输出高电平时，所述发光二极管点亮；所述中央处理器向所述高速开关的控制端输出低电平时，所述发光二极管熄灭。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述可见光接收模块包括：
用于接收可见光，并将所述可见光转换为电信号的可见光接收单元；
用于将所述可见光接收单元输出的电信号进行放大处理的放大单元；以及
用于对所述放大单元处理的信号进行量化处理的比较器；
所述可见光接收单元通过所述放大单元连接所述比较器的负输入端，所述比较器的正输入端连接参考电压端，所述比较器的输出端连接所述中央处理器。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述比较器的所述量化处理的结果为有可见光时，则所述比较器的输出端输出高电平至所述中央处理器，所述比较器的所述量化处理的结果为没有可见光时，则所述比较器的输出端输出低电平至所述中央处理器。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述可见光接收单元包括：光敏二极管和第一电阻，
其中所述光敏二极管的负极连接VCC供电端，所述光敏二极管的正极连接所述放大单元、所述光敏二极管的正极还通过所述第一电阻接地。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述放大单元包括三极管和第二电阻，
其中所述三极管的基极连接所述光敏二极管的正极，所述三极管的基极还通过所述第一电阻接地，所述三极管的集电极通过所述第二电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述可见光接收单元包括：光敏三极管、第三电阻和第四电阻，
其中所述光敏三极管的集电极通过所述第三电阻连接VCC供电端，所述光敏三极管的发射极通过所述第四电阻接地，所述光敏三极管的基极接收外部的可见光信号。
在本发明所述的采用可见光实现通信的无辐射通信系统中，所述放大单元包括三极管和第五电阻，
其中所述三极管的基极连接所述光敏三极管的发射极，所述三极管的基极还通过所述第四电阻接地，所述三极管的集电极通过所述第五电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
 有益效果
相较于现有技术，本发明提供的采用可见光实现通信的无辐射通信终端和通信系统，通过可见光发射模块发射可见光，在可见光接收模块接收到可见光时，对可见光接收模块接收的信号进行处理利用可见光与其它可见光通信终端通信，实现了无辐射、节约了频率资源、通信性能稳定可靠、通信成本低、通信传输速率高等优点。
 附图说明
图1为本发明采用可见光实现通信的无辐射通信终端的电路原理图。
图2为本发明采用可见光实现通信的无辐射通信终端中可见光接收模块的第一较佳实施的电路图。
图3为本发明采用可见光实现通信的无辐射通信终端中可见光接收模块的第二较佳实施的电路图。
 本发明的最佳实施方式
本发明提供一种采用可见光实现通信的无辐射通信终端和通信系统，为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
本发明提供的采用可见光实现通信的无辐射通信终端，利用可见光进行通讯，通过可见光来传递信息实现语音和数据通讯，解决了通信终端的辐射问题，真正实现健康无辐射通讯；而且把自然资源充分利用起来，节约有限的频率资源。
请参阅图1，其为本发明采用可见光实现通信的无辐射通信终端的电路原理图。如图1所示，本发明的采用可见光实现通信的无辐射通信终端包括：可见光发射模块10、可见光接收模块20和中央处理器30，所述可见光发射模块10和可见光接收模块20连接所述中央处理器30。
其中，所述中央处理器30用于控制可见光发射模块10的工作状态，当中央处理器30控制可见光发射模块10工作时，使可见光发射模块10向外发射可见光；当中央处理器30控制可见光发射模块10停止工作时，使可见光发射模块10停止发射可见光。
所述可见光接收模块20用于接收可见光，并将可见光转换为电信号传输给中央处理器30，所述中央处理器30还用于对可见光接收模块20接收的信号进行处理利用可见光与其它可见光通信终端通信。
具体实施时，所述可见光发射模块10包括：发光二极管LED和高速开关K，所述发光二极管LED的负极接地，发光二极管LED的正极连接所述高速开关K的第一端，所述高速开关K的第二端和控制端连接中央处理器30。所述中央处理器30具体通过输出高低电平来控制高速开关K的闭合与断开状态，来控制发光二极管LED的点亮与熄灭，当中央处理器30的控制管脚D输出高电平时，使高速开关K闭合，从而使发光二极管LED点亮，当中央处理器30的控制管脚D输出低电平时，使高速开关K断开，从而使发光二极管LED熄灭，从而利用可见光的“有”和“无”来传递信息，以实现语音和数据通讯。
本发明实施例中，所述中央处理器30中设置有电阻调节单元（图中未标出），所述电阻调节单元连接所述高速开关K的第二端，通过电阻调节单元输出的电阻大小来控制发光二极管LED的亮度，使通信终端在同等条件下（如发光二极管LED功率相同的条件下），可以通讯更远的距离。具体实施时，所述电阻调节单元为可调电阻R，所述可调电阻R设置于中央处理器中实现自动调节可见光的亮度，当可调电阻R的阻值越小，发光二极管LED的亮度越亮；当可调电阻R的阻值越大，发光二极管LED的亮度越暗；当然，所述可调电阻R也可以设置在中央处理器外部，实现手动调节可见光的亮度。
请一并参阅图2，其中，图2为本发明采用可见光实现通信的无辐射通信终端中可见光接收模块的第一较佳实施的电路图。所述可见光接收模块20包括：可见光接收单元201、放大单元202和比较器IC1，所述可见光接收单元201通过放大单元202连接所述比较器IC1的负输入端，所述比较器IC1的正输入端连接参考电压端，比较器IC1的输出端连接中央处理器30。
其中，所述可见光接收单元201用于接收可见光，并根据可见光的亮度将所述可见光转换为相应强度的电信号；所述放大单元202用于将可见光接收单元201输出的电信号放大；所述比较器IC1用于对放大单元202处理的信号进行量化处理，经量化的信号被中央处理器30接收并进行相关的处理。本实施例中，当比较器IC1量化处理后有可见光时判定为高电平，输出1、没有可见光时判定为低电平，输出0，根据“1”和“0”组成的二进制信号，并结合LED灯的闪烁频率供中央处理器30识别和处理实现通信。现有射频信号也是将无线电波信号处理为“1”和“0”供中央处理器进行处理，由于本发明的通信实现过程与现有的射频信号相同，此处不再赘述。
在本发明的第一较佳实施例中，所述可见光接收单元201包括：光敏二极管D1和第一电阻R1，所述光敏二极管D1的负极连接VCC供电端，光敏二极管D1的正极连接放大单元202、光敏二极管D1的正极还通过第一电阻R1接地。
所述放大单元202包括三极管Q1和第二电阻R2，所述三极管Q1的基极连接所述光敏二极管D1的正极、三极管Q1的基极还通过第一电阻R1接地，所述三极管Q1的集电极通过第二电阻R2连接所述VCC供电端，三极管Q1的集电极还连接所述比较器IC1的负输入端，所述三极管Q1的发射极接地。
当然，所述放大单元202还可以采用其它方式实现，如采用运算放大器，根据放大因子将光敏二极管D1转换的微弱电信号放大相应的倍数。并且，所述放大单元202和比较器IC1也可以设置在中央处理器中，本发明对此不作限制。
当光敏二极管D1接收来自可见光的数据时，把可见光变为电信号，并通过三极管将电信号放大，输出相应的电压给比较器IC1，所述比较器IC1将其与参考电压进行比较，当该电压值大于参考电压时输出1，当该电压值小于等于参考电压时输出0，经量化的信号被中央处理器30接收并进行相关的处理。
请参阅图1和图3，其中，图3为本发明采用可见光实现通信的无辐射通信终端中可见光接收模块的第二较佳实施的电路图。该实施例的可见光接收模块包括可见光接收单元301、放大单元302以及比较器IC2，第二较佳实施例与第一较佳实施例相比其不同之处仅在于可见光接收单元301采用的电子元件不相同。
本实施例中，所述可见光接收单元301包括：光敏三极管Q2、三极管Q3、第三电阻R3和第四电阻R4，所述光敏三极管Q2的集电极通过第三电阻R3连接VCC供电端，光敏三极管Q2的发射极通过第四电阻R4接地，所述光敏三极管Q2的基极接收外部的可见光信号；所述三极管Q3的基极连接光敏三极管Q2的发射极。
当光敏三极管Q2接收来自可见光的数据时，把可见光变为电信号，并通过三极管Q3将电信号放大，输出相应的电压给比较器IC2，所述比较器IC2将其与参考电压进行比较，当该电压值大于参考电压时输出1，当该电压值小于等于参考电压时输出0，经量化的信号被中央处理器30接收并进行相关的处理。
由于光的传输受传输距离（本发明的无辐射通信终端的通讯距离在十米之内）、障碍物、光的反射、折射等影响，有些场合下不适应于采用可见光通信，因此本发明提供的采用可见光实现通信的无辐射通信终端还具有与现有射频通信终端相同的功能模块，在无法发射和接收可见光时，采用无线电波进行通信。因此，本发明的无辐射通信终端同样具有射频模块、电池、电源管理器、马达、麦克风、扬声器、USB接口、SIM卡槽、触摸显示屏、SD/MMC模块、摄像头、RAM、ROM、XO等模块，由于其利用无线电波通信进行通话的原理、信号识别原理（如本发明的无辐射通信终端通过时系来识别相应通信终端的发射的可见光信号）、触摸操作等原理与现有技术相同，此处不在赘述。
本发明还对应提供一种采用可见光实现通信的通信系统，其包括至少两个无辐射通信终端，所述无辐射通信终端之间利用可见光进行通信。由于无辐射通信终端之间利用可见光进行通信的方案已在上文进行了详细的描述，此处不在赘述。
综上所述，本发明提供的采用可见光实现通信的无辐射通信终端和通信系统实现了无辐射、节约了频率资源、通信性能稳定可靠、通信成本低、通信传输速率高等优点。
另外，由于可见光传输速率达几百兆，甚至到1Gbps以上，因此本发明还具有传输速率高，通信的稳定性和可靠性高的特点。并且由于本发明无需占用频率资源，其通信成本大幅降低。
可以理解的是，对本领域普通技术人员来说，可以根据本发明的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本发明所附的权利要求的保护范围。

Claims (20)

  1. 一种采用可见光实现通信的无辐射通信终端，其包括：
    用于发射可见光的可见光发射模块；
    用于接收可见光，并将所述可见光转换为电信号的可见光接收模块；以及
    用于控制所述可见光发射模块和所述可见光接收模块的工作状态，及对通过所述可见光，发射和接收的数据进行处理的中央处理器；
    所述可见光发射模块和可见光接收模块分别连接所述中央处理器。
  2. 根据权利要求1所述的采用可见光实现通信的无辐射通信终端，其中所述可见光发射模块包括：发光二极管和高速开关，
    其中所述发光二极管的负极接地，所述发光二极管的正极连接所述高速开关的第一端，所述高速开关的第二端和所述高速开关的控制端分别连接所述中央处理器。
  3. 根据权利要求2所述的采用可见光实现通信的无辐射通信终端，其中所述中央处理器包括电阻调节单元，所述电阻调节单元连接所述高速开关的第二端。
  4. 根据权利要求2所述的采用可见光实现通信的无辐射通信终端，其中所述中央处理器向所述高速开关的控制端输出高电平时，所述发光二极管点亮；所述中央处理器向所述高速开关的控制端输出低电平时，所述发光二极管熄灭。
  5. 根据权利要求2所述的采用可见光实现通信的无辐射通信终端，其中所述可见光接收模块包括：
    用于接收可见光，并将所述可见光转换为电信号的可见光接收单元；
    用于将所述可见光接收单元输出的电信号进行放大处理的放大单元；以及
    用于对所述放大单元处理的信号进行量化处理的比较器；
    所述可见光接收单元通过所述放大单元连接所述比较器的负输入端，所述比较器的正输入端连接参考电压端，所述比较器的输出端连接所述中央处理器。
  6. 根据权利要求5所述的采用可见光实现通信的无辐射通信终端，
    其中所述比较器的所述量化处理的结果为有可见光时，则所述比较器的输出端输出高电平至所述中央处理器，所述比较器的所述量化处理的结果为没有可见光时，则所述比较器的输出端输出低电平至所述中央处理器。
  7. 根据权利要求5所述的采用可见光实现通信的无辐射通信终端，其中所述可见光接收单元包括：光敏二极管和第一电阻，
    其中所述光敏二极管的负极连接VCC供电端，所述光敏二极管的正极连接所述放大单元、所述光敏二极管的正极还通过所述第一电阻接地。
  8. 根据权利要求7所述的采用可见光实现通信的无辐射通信终端，其中所述放大单元包括三极管和第二电阻，
    其中所述三极管的基极连接所述光敏二极管的正极，所述三极管的基极还通过所述第一电阻接地，所述三极管的集电极通过所述第二电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
  9. 根据权利要求5所述的采用可见光实现通信的无辐射通信终端，其中所述可见光接收单元包括：光敏三极管、第三电阻和第四电阻，
    其中所述光敏三极管的集电极通过所述第三电阻连接VCC供电端，所述光敏三极管的发射极通过所述第四电阻接地，所述光敏三极管的基极接收外部的可见光信号。
  10. 根据权利要求9所述的采用可见光实现通信的无辐射通信终端，其中所述放大单元包括三极管和第五电阻，
    其中所述三极管的基极连接所述光敏三极管的发射极，所述三极管的基极还通过所述第四电阻接地，所述三极管的集电极通过所述第五电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
  11. 一种采用可见光实现通信的无辐射通信系统，其包括：至少两个无辐射通信终端，所述无辐射通信终端之间利用可见光进行通信；
    其中所述采用可见光实现通信的无辐射通信终端包括：
    用于发射可见光的可见光发射模块；
    用于接收可见光，并将所述可见光转换为电信号的可见光接收模块；以及
    用于控制所述可见光发射模块和所述可见光接收模块的工作状态，及对通过所述可见光，发射和接收的数据进行处理的中央处理器；
    所述可见光发射模块和可见光接收模块分别连接所述中央处理器。
  12. 根据权利要求11所述的采用可见光实现通信的无辐射通信系统，其中所述可见光发射模块包括：发光二极管和高速开关，
    其中所述发光二极管的负极接地，所述发光二极管的正极连接所述高速开关的第一端，所述高速开关的第二端和所述高速开关的控制端分别连接所述中央处理器。
  13. 根据权利要求12所述的采用可见光实现通信的无辐射通信系统，其中所述中央处理器包括电阻调节单元，所述电阻调节单元连接所述高速开关的第二端。
  14. 根据权利要求12所述的采用可见光实现通信的无辐射通信系统，其中所述中央处理器向所述高速开关的控制端输出高电平时，所述发光二极管点亮；所述中央处理器向所述高速开关的控制端输出低电平时，所述发光二极管熄灭。
  15. 根据权利要求12所述的采用可见光实现通信的无辐射通信系统，其中所述可见光接收模块包括：
    用于接收可见光，并将所述可见光转换为电信号的可见光接收单元；
    用于将所述可见光接收单元输出的电信号进行放大处理的放大单元；以及
    用于对所述放大单元处理的信号进行量化处理的比较器；
    所述可见光接收单元通过所述放大单元连接所述比较器的负输入端，所述比较器的正输入端连接参考电压端，所述比较器的输出端连接所述中央处理器。
  16. 根据权利要求15所述的采用可见光实现通信的无辐射通信系统，其中所述比较器的所述量化处理的结果为有可见光时，则所述比较器的输出端输出高电平至所述中央处理器，所述比较器的所述量化处理的结果为没有可见光时，则所述比较器的输出端输出低电平至所述中央处理器。
  17. 根据权利要求15所述的采用可见光实现通信的无辐射通信系统，其中所述可见光接收单元包括：光敏二极管和第一电阻，
    其中所述光敏二极管的负极连接VCC供电端，所述光敏二极管的正极连接所述放大单元、所述光敏二极管的正极还通过所述第一电阻接地。
  18. 根据权利要求17所述的采用可见光实现通信的无辐射通信系统，其中所述放大单元包括三极管和第二电阻，
    其中所述三极管的基极连接所述光敏二极管的正极，所述三极管的基极还通过所述第一电阻接地，所述三极管的集电极通过所述第二电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
  19. 根据权利要求15所述的采用可见光实现通信的无辐射通信系统，其中所述可见光接收单元包括：光敏三极管、第三电阻和第四电阻，
    其中所述光敏三极管的集电极通过所述第三电阻连接VCC供电端，所述光敏三极管的发射极通过所述第四电阻接地，所述光敏三极管的基极接收外部的可见光信号。
  20. 根据权利要求19所述的采用可见光实现通信的无辐射通信系统，其中所述放大单元包括三极管和第五电阻，
    其中所述三极管的基极连接所述光敏三极管的发射极，所述三极管的基极还通过所述第四电阻接地，所述三极管的集电极通过所述第五电阻连接所述VCC供电端，所述三极管的集电极还连接所述比较器的负输入端，所述三极管的发射极接地。
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