CN114665973A - Self-powered non-visible light communication system and method based on mechanical modulation - Google Patents
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Abstract
The invention discloses a self-powered non-visible light communication system and a self-powered non-visible light communication method based on mechanical modulation, wherein the self-powered non-visible light communication system comprises a mechanical modulation module, a power generation module, a non-visible light emitting module and a non-visible light receiving module, the mechanical modulation module is used for modulating mechanical motion into a mechanical signal containing coded information, and the mechanical signal is used for driving the power generation module; the power generation module is used for converting the mechanical signal into an electrical signal, and the electrical signal is used for driving the invisible light emitting module; the non-visible light emitting module is used for converting the electric signal into a non-visible light signal and sending the non-visible light signal to the non-visible light receiving module; the non-visible light receiving module is used for converting the non-visible light signals into electric signals to demodulate information. The invention can realize wireless information transmission by using invisible light signals without external power supply and complex modulation circuits.
Description
Technical Field
The invention relates to the technical field of energy and communication, in particular to a self-powered non-visible light communication system and method based on mechanical modulation.
Background
The wireless sensing and wireless communication technology plays a vital role in the infrastructure construction of the internet of things at present. However, the wireless radio frequency communication technology widely used at present is limited by the shortage of frequency spectrum resources, and is easily interfered by radio frequency during operation, so that data is lost during transmission. Thus, wireless optical communication techniques based on abundant optical signal spectral resources provide a viable class of alternatives.
However, conventional wireless optical communication technologies, such as Visible Light Communication (VLC) technology, rely on complex circuits to modulate information, and require power supply from a power grid and power from chemical batteries. The scheme of using the power supply of the power grid needs to shield electromagnetic interference of alternating current in the power grid on the modulation circuit, and simultaneously needs to be matched with a power adapter to convert the power supply of the power grid into low-voltage direct current for the information modulation circuit and the light source driving circuit; the scheme of using the chemical battery for power supply needs to replace the battery regularly, so that the service life is limited, and the problem of environmental pollution caused by waste batteries is also faced. And in certain application scenarios (e.g., subsea, downhole, in an integrally packaged system), the cost of the battery replacement operation may be high or difficult to implement. In addition, a transmission medium using visible light as an optical signal is susceptible to interference from ambient light, has a short effective transmission distance (about 30 cm), and has many problems such as high cost of a visible light receiving device and complicated demodulation algorithm.
In addition, in actual production life, the conventional wireless optical communication system does not need to continuously transmit information in most applications, but the system inevitably consumes power in a standby state, so that when an information transmission instruction arrives, the modulation circuit can convert the instruction into an optical signal in time, and the light source driving circuit is started to transmit corresponding information.
The above background disclosure is only provided to assist understanding of the concept and technical solution of the present invention, which does not necessarily belong to the prior art of the present patent application, and should not be used to evaluate the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
In order to solve the technical problems, the invention provides a self-powered non-visible light communication system and a self-powered non-visible light communication method based on mechanical modulation, which can realize wireless information transmission by using non-visible light signals without external power supply and a complex modulation circuit.
In order to achieve the purpose, the invention adopts the following technical scheme:
one aspect of the invention discloses a self-powered non-visible light communication system based on mechanical modulation, which is characterized by comprising a mechanical modulation module, a power generation module, a non-visible light emitting module and a non-visible light receiving module, wherein:
the mechanical modulation module is used for modulating mechanical motion into a mechanical signal containing coded information, and the mechanical signal is used for driving the power generation module;
the power generation module is used for converting the mechanical signal into an electrical signal, and the electrical signal is used for driving the invisible light emitting module;
the non-visible light emitting module is used for converting the electric signal into a non-visible light signal and sending the non-visible light signal to the non-visible light receiving module;
the non-visible light receiving module is used for converting the non-visible light signals into electric signals to demodulate information.
Preferably, the mechanical modulation module comprises at least one of a mechanical frequency modulation unit, a mechanical phase modulation unit and a mechanical amplitude modulation unit, wherein: the mechanical frequency modulation unit is used for encoding information by regulating and controlling the frequency of the periodic mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information; the mechanical phase modulation unit is used for encoding information by regulating and controlling the phase of periodic mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information; the mechanical amplitude modulation unit is used for encoding information by regulating and controlling the output power in mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information.
Preferably, the mechanical frequency modulation unit is used for controlling the reciprocating frequency in the reciprocating linear motion or controlling the rotating speed in the circular motion to encode information; the mechanical phase modulation unit is used for encoding information by regulating and controlling the proportion of the work-applying part occupying the whole period and outputting the work-applying part outwards in each period in the periodic mechanical motion or regulating and controlling the positions of the work-applying part starting and ending in the whole period on the premise of keeping the same proportion of the work-applying part outwards in each period; the mechanical amplitude modulation unit is used for coding information by controlling the width of an effective acting part in linear motion, controlling the radius of the effective acting part in circular motion or controlling the existence of an output signal of each period in periodic motion.
Preferably, the power generation module adopts a friction nano generator, a piezoelectric nano generator or an electret generator.
Preferably, the non-visible light emitting module adopts an infrared light emitting diode, an ultraviolet light emitting diode or a non-visible light laser.
Preferably, the non-visible light receiving module includes at least one of a non-visible light detecting diode and an amplifier.
Preferably, the self-powered non-visible light communication system further comprises a conditioning circuit module, and the power generation module is further configured to send the electrical signal to the conditioning circuit module; the conditioning circuit module is used for conditioning the electric signal to drive the invisible light emitting module.
Preferably, the conditioning circuit module comprises at least one of a diode rectifier bridge, a zener diode, a transformer, and a switching power supply circuit.
Preferably, the step of conditioning the electrical signal by the conditioning circuit module comprises at least one of: converting the polarity of the electrical signal into the polarity of the electrical signal used by the non-visible light emitting module, reducing the voltage of the electrical signal, and increasing the current of the electrical signal.
The invention also discloses a self-powered non-visible light communication method based on mechanical modulation, which adopts the self-powered non-visible light communication system to carry out communication and comprises the following steps: the mechanical modulation module modulates mechanical motion into a mechanical signal containing coded information, and the mechanical signal drives the power generation module; the power generation module converts the mechanical signal into an electrical signal, and the electrical signal drives the invisible light emitting module; the non-visible light emitting module converts the electric signal into a non-visible light signal and sends the non-visible light signal to the non-visible light receiving module; the non-visible light receiving module converts the non-visible light signal into an electric signal to demodulate information.
Compared with the prior art, the invention has the beneficial effects that: the self-powered non-visible light communication system and method based on mechanical modulation provided by the invention have the advantages that various characteristics in mechanical motion can be transmitted in real time through non-visible light signals by combining the mechanical modulation module, the power generation module and the non-visible light transmitting and receiving module, and the self-powered non-visible light communication system and method based on mechanical modulation have the following advantages: firstly, the modulation of information to be sent to a non-visible light signal can be realized through the excitation of mechanical motion, the complex design of a signal modulation circuit in the traditional optical communication system is simplified, and meanwhile, the energy consumption caused by the modulation circuit is avoided; secondly, the energy in the mechanical motion can be converted into the electric energy for driving the invisible light signal emitting module, and the autonomous supply of the energy for driving the light emitting device in the optical communication system is realized; third, a medium using non-visible light as an optical signal has better diffraction ability (infrared light) or transmission ability (ultraviolet light) than visible light; fourthly, the receiving end in the non-visible light communication system does not need to consider visible light interference, so that the hardware cost and the design difficulty of the receiving end are lower than those of the receiving end in visible light communication; fifthly, the invisible light cannot be seen by naked eyes, so that the invisible light emitting module cannot cause environmental light pollution which causes interference to people when working.
In a further aspect, the mechanical modulation module may include at least one of a mechanical frequency modulation unit, a mechanical phase modulation unit, and a mechanical amplitude modulation unit, so that diversified communication functions, such as separate modulation of channels and information sources, and a multi-channel information transmission function, may be realized through cooperative work of multiple mechanical modulation modes.
Drawings
FIG. 1 is a block diagram of the architecture and operation of a self-powered non-visible light communication system based on mechanical modulation in accordance with a preferred embodiment of the present invention;
FIG. 2 is a mechanical frequency modulation workflow diagram of the preferred embodiment of the present invention;
FIG. 3 is a mechanical phase modulation workflow diagram of a preferred embodiment of the present invention;
FIG. 4 is a mechanical amplitude modulation workflow diagram of a preferred embodiment of the present invention;
FIG. 5 is an exploded view of the mechanical components of a rotational free layer triboelectric nano-generator (RF-TENG) suitable for mechanical frequency modulation according to one embodiment of the present invention;
FIG. 6 is an exploded view of the mechanical components of a rotational free layer friction nano-generator (RF-TENG) suitable for mechanical phase modulation according to the second embodiment of the present invention;
fig. 7 is an exploded view of the mechanical components of a reverse charge enhancement type transistor-like tribo nanogenerator (OCT-TENG) applicable to mechanical amplitude modulation according to a third embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either mechanical component attachment or circuit/signal communication.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The preferred embodiment of the invention provides a self-powered non-visible light communication method based on a mechanical modulation protocol, which gets rid of the dependence of the traditional optical communication on external electric energy supply and realizes the full-flow self-powered communication from information modulation to information transmission by collecting environmental mechanical energy. Meanwhile, non-visible light such as infrared light, ultraviolet light and the like is used as a signal transmission medium and introduced into the field of self-powered communication, and the communication distance, the better environment light interference resistance and the lower energy consumption and cost of the receiver are realized.
As shown in fig. 1, the preferred embodiment of the present invention discloses a self-powered non-visible light communication system based on mechanical modulation, comprising a mechanical modulation module 10, a power generation module 20, a non-visible light emitting module 40 and a non-visible light receiving module 50, wherein the mechanical modulation module 10 is used for modulating mechanical motion into a mechanical signal containing encoded information, and the mechanical signal is used for driving the power generation module; the power generation module 20 is used for converting the mechanical signal into an electrical signal, and the electrical signal is used for driving the invisible light emitting module 40; the invisible light emitting module 40 is configured to convert the electrical signal into an invisible light signal and send the invisible light signal to the invisible light receiving module 50; the non-visible light receiving module is used for converting the non-visible light signals into electric signals to demodulate information. Further, the self-powered non-visible light communication system in this embodiment further includes a conditioning circuit module 30, the power generation module 20 is further configured to send an electrical signal to the conditioning circuit module 30, and the conditioning circuit module 30 is configured to condition the electrical signal for driving the non-visible light emitting module 40.
Specifically, the mechanical modulation module 10 collects energy of mechanical motion in the environment, and modulates the mechanical motion into a mechanical signal encoded with certain information through a mechanical modulation protocol, wherein modulation methods may be classified into three types: mechanical frequency modulation, mechanical phase modulation, and mechanical amplitude modulation. The mechanical frequency modulation encodes information by regulating and controlling the frequency of periodic mechanical motion, and the implementation mode includes but is not limited to controlling reciprocating frequency in reciprocating linear motion, rotating speed in circular motion and the like. The mechanical phase modulation encodes information by regulating and controlling the phase of the periodic mechanical motion, and the implementation manner includes, but is not limited to, regulating and controlling the proportion of the work doing part occupying the whole period and capable of being output outwards in each period in the periodic mechanical motion, or regulating and controlling the positions of the work doing part starting and ending in the whole period under the premise of keeping the proportion of the work doing outwards in each period the same. The mechanical amplitude modulation encodes information by regulating the output power in mechanical motion, and the implementation modes include but are not limited to controlling the width of an effective acting part in linear motion, controlling the radius of the effective acting part in circular motion, controlling the existence of an output signal in each period in periodic motion, and the like.
In specific embodiments, the above mechanical modulation protocol may be designed to adjust mechanical structure or control mechanical movement to achieve a single type of mechanical modulation, or simultaneous operation of multiple types of mechanical modulation. The encoding and modulation of the channel and the signal source are respectively realized through the cooperative work of multiple mechanical modulation modes, for example, the encoding and modulation of the channel can be realized through a mechanical frequency modulation mode, the encoding and modulation of the signal source and the like can be realized through a mechanical phase modulation mode, and the modulation modes adopted for the encoding and modulation of the specific channel and signal source are not limited to this. Specifically, in this embodiment, the mechanical modulation module may include at least one of a mechanical frequency modulation unit, a mechanical phase modulation unit, and a mechanical amplitude modulation unit, where the operating principle and implementation manner of the mechanical frequency modulation unit, the mechanical phase modulation unit, and the mechanical amplitude modulation unit correspond to the operating principle and implementation manner of the three modulation methods of the mechanical frequency modulation, the mechanical phase modulation, and the mechanical amplitude modulation.
The power generation module 20 is responsible for converting the mechanically modulated mechanical signal into an electrical signal. In the present embodiment, the power generation module 20 may be a Triboelectric Nanogenerator (TENG), a Piezoelectric Nanogenerator (PENG), an electret generator, or the like, but not limited thereto. The selected power generation module 20 has a higher energy density type, so that the whole system can be miniaturized as much as possible; and is also of a very thin and light type, so that waste of mechanical energy can be reduced and mechanical energy with lower energy can be utilized. It should be noted that in the present embodiment, both the mechanical signal and the electrical signal carry energy, so that no additional energy supply is required.
The conditioning circuit module 30 is responsible for conditioning the electrical signal generated by the power generation module 20 so that it can drive the invisible light emitting module 40 more efficiently. In the embodiment, a passive (without external power supply) circuit element is adopted to build the conditioning circuit, so that the conditioning circuit can be suitable for a self-powered system. The present embodiment simultaneously considers the characteristics of the electrical signal sent by the generator and the requirement of the invisible light emitting module for the driving electrical signal, and designs the conditioning circuit module 30, wherein the circuit elements in the conditioning circuit module 30 include, but are not limited to, a diode rectifier bridge, a voltage regulator diode, a transformer, various switching power circuits, and the like, and the functions of the conditioning circuit module 30 formed by these circuit elements include, but are not limited to, converting the polarity of the electrical signal sent by the power generation module 20 into the polarity of the electrical signal used by the invisible light emitting module 40, reducing the voltage of the electrical signal to prevent the elements of the invisible light emitting module 40 from being broken down by high voltage, and increasing the current of the electrical signal to achieve higher emitted light power, and the like.
The invisible light emitting module 40 is responsible for converting the electrical signal into a invisible light signal and emitting the invisible light signal, and the signal is received by the corresponding invisible light receiving module 50 and then converted into the electrical signal to demodulate the information. In this embodiment, the non-visible Light Emitting module 40 employs an infrared Light Emitting Diode (LED), an ultraviolet Light Emitting Diode (uv LED), a non-visible Light laser, or the like; the invisible light receiving module 50 includes elements such as an invisible light detecting diode and an amplifier, and a model matching parameters such as the wavelength and the optical power of the invisible light should be selected in specific implementation.
The preferred embodiment of the present invention further discloses a self-powered non-visible light communication method based on mechanical modulation, wherein the self-powered non-visible light communication system is adopted, and with reference to fig. 1, the specific flow of the self-powered non-visible light communication method is as follows: firstly, information to be transmitted and external mechanical movement form a mechanical signal for driving the power generation module 20 through the mechanical modulation module 10, then the power generation module 20 is operated under the excitation of the modulated mechanical signal, and the generated electric signal containing energy is processed by the conditioning circuit module 30 and then drives the invisible light emitting module 40; meanwhile, the coded information in the electrical signal is also transmitted through the invisible light emitting module 40 synchronously; finally, the invisible light receiving module 50 receives the invisible light signal, converts the invisible light signal into an electrical signal, decodes the information, and restores the information. In this embodiment, since both the mechanical signal and the electrical signal have energy, the modulation and transmission of information do not require energy supply other than the mechanical movement.
The preferred embodiment of the invention provides a communication system which is based on a mechanical modulation principle, does not need external electric energy supply and a complex modulation circuit and realizes wireless information transmission by using non-visible light signals (including infrared light with the wavelength ranging from 1mm to 780nm or ultraviolet light with the wavelength ranging from 400nm to 10 nm). The information can be coded by collecting and modulating the energy of the mechanical motion in the environment, the mechanical energy is converted into the electric energy for driving the invisible light emitting module, and the coded information in the modulated mechanical motion is converted into the invisible light signal to be sent, so that the dependence on the electric energy supply is avoided, and the advantages that the invisible light is not easily interfered by visible light in transmission, can diffract obstacles and cannot cause environmental light pollution are utilized.
The mechanically modulated self-powered non-visible light communication system and method provided by the present invention is further described in the following detailed description.
Fig. 2 is a flow chart of the operation of mechanical frequency modulation, wherein at the non-visible light emitting end, the Information to be transmitted (Information to be transmitted) is first encoded to obtain an Information encoding sequence, and Information encoding rules that can be used herein include, but are not limited to American Standard Code for Information Interchange (ASCII), morse Code, national Standard Code (GB2312), user-defined encoding rules, and the like. Then, the coded information coding sequence is subjected to linear mapping, a mechanical motion frequency change sequence (such as the rotating speed of circular mechanical motion) is output, and then the mechanical motion sequence drives a power generation module (such as TENG) and further drives a non-visible light emitting module. At a non-visible light receiving end, extracting frequency change information from a non-visible light signal received by a non-visible light receiving module by a spectrum analysis method (such as fast Fourier transform) to obtain a non-visible light signal frequency change sequence; then, the sequence of the frequency change information (the non-visible light signal frequency change sequence) is mapped into the information coding sequence by the above-mentioned agreed linear mapping rule; finally, the information coding sequence is decoded to recover the information to obtain the received information.
Fig. 3 is a working flow chart of mechanical phase modulation, wherein at the non-visible light emitting end, after information to be transmitted is encoded, the information encoding sequence is linearly mapped to a phase change sequence of a part which performs work and is output outwards by mechanical motion (for example, a relative position of a part which can effectively output work in one period in a circular mechanical motion in the whole period, and the like), and then a power generation module (for example, TENG) is driven through the sequence, so as to drive the non-visible light emitting module. At a non-visible light receiving end, a non-visible light signal received by a non-visible light receiving module firstly extracts phase change information of the signal by a phase detection method (such as a phase-locked loop technology) to obtain a non-visible light signal phase change sequence; then, after the non-visible light signal phase change sequence is linearly mapped to the information coding sequence, the information coding sequence is decoded to recover the information to be sent to obtain the received information.
Fig. 4 is a flow chart of the mechanical amplitude modulation, wherein, at the invisible light emitting end, after the information to be transmitted is encoded, the encoded sequence is linearly mapped to an amplitude variation sequence of the mechanical motion output power (where the amplitude variation may be the existence of the mechanical output within a certain time period or the variation of the output power of the mechanical motion), and then the sequence is used to drive the power generation module (for example, TENG), so as to drive the invisible light emitting module. At a non-visible light receiving end, extracting amplitude change information of a signal from a non-visible light signal received by a non-visible light receiving module by an amplitude detection method (such as a peak detection technology) to obtain a non-visible light signal amplitude change sequence; then, after the non-visible light signal amplitude variation sequence is linearly mapped to the information coding sequence, the information coding sequence is decoded to recover the information to be sent to obtain the received information.
Based on the energy acquisition technology and the communication principle, the embodiment of the invention designs a set of mechanical modulation protocols comprising mechanical frequency modulation, mechanical phase modulation and mechanical amplitude modulation; a self-powered non-visible light communication method is developed based on the protocol, and the modulation and the transmission of information are realized by simply collecting mechanical energy in the environment. The system built by the method does not need external power supply and does not need to introduce a complex power management or signal modulation circuit. The nano generator device in the system is a power source and an information source, and a complete system for transmitting information by using invisible light signals is formed.
According to the embodiment of the invention, on the premise of not depending on external electric energy supply, information modulation is realized by utilizing the excitation of a mechanical signal, and meanwhile, a non-visible light signal is used as a communication medium for transmitting information. In the following embodiments, a Rotational independent layer-based friction Mode nano-generator (RF-TENG) and an inverse charge-enhanced Transistor-like friction nano-generator (OCT-TENG) are respectively used as power generation modules to perform experimental verification on the proposed mechanical modulation method.
The first embodiment is as follows:
fig. 5 is a schematic diagram illustrating a disassembled mechanical component of the RF-TENG, which in this embodiment is designed for mechanical frequency modulation, and the method of making the RF-TENG is described below. RF-TENG includes a top fixed disk 61, a metal electrode unit 62, a stator PCB substrate 63, a friction layer 64, a metal electrode unit 65, a rotor PCB substrate 66, and a rotating disk 67, wherein the stator and rotor are manufactured by Printed Circuit Board (PCB) technology; the metal electrode unit 62 arranged on the stator PCB substrate 63 comprises 180 prong electrodes arranged in the radial direction, and the spaced electrodes are communicated with each other and provided with bonding pads; the metal electrode unit 65 provided on the rotor PCB substrate 66 includes 90 electrodes that are not connected to each other, and a Polytetrafluoroethylene (PTFE) film is attached to the surface as a friction layer 64. The stator PCB substrate 63 and the rotor PCB substrate 66 are both made of glass fiber substrates 1mm thick, and the electrodes in the metal electrode units 62 and 65 are made of copper foil 35 μm thick. The radius of the stator PCB substrate 63 is 135 mm and the radius of the rotor PCB substrate 66 is 125 mm, wherein an additional radius of the periphery of the stator PCB substrate 63 is reserved for the pads connected to the output wires to prevent the pads from colliding with the rotor PCB substrate 66. The copper electrode covering portions on the stator PCB substrate 63 and the rotor PCB substrate 66 extend from a radius r of 25 mm to a radius r of 120 mm. Further, the top fixed disk 61(r 150 mm) and the rotating disk 67(r 125 mm) for mechanical support are both machined from anodized aluminum. Under the rotation motion of the rotor PCB substrate 66, the RF-TENG will generate an alternating current signal, and the frequency of the generated alternating current can be controlled by controlling the rotation speed of the rotor PCB substrate 66, so that information can be encoded into the frequency variation.
Further, the pad led out from the stator PCB substrate 63 through the RF-TENG is connected to the conditioning circuit module 30 through a wire, and the conditioning circuit module 30 firstly converts the bipolar alternating current signal generated by the RF-TENG into a unipolar alternating current signal through a full-wave rectifier bridge, and then converts the RF-TENG signal with high voltage into a signal with lower voltage and higher current through a transformer. During which the frequency of the electrical signal remains unchanged.
Further, the invisible light emitting module 40 is connected to the conditioning circuit module 30, and the electrical signal conditioned by the conditioning circuit module 30 is input to the invisible light emitting module 40 for driving the light emitting element to emit an invisible light signal. The non-visible light receiving module carries out spectrum analysis on the received non-visible light signal to obtain the change of the signal frequency, and the information to be sent by the user can be recovered by decoding the information code represented by the signal frequency change. In this embodiment and the following two embodiments, the non-visible light emitting elements used are all infrared LEDs with emission wavelengths of 940 nm, and the core element of the non-visible light receiving module is an infrared receiving diode with emission wavelengths of 940 nm. The "infrared signal" is used hereinafter to refer to "an infrared non-visible light signal emitting a wavelength of 940 nm".
Example two:
fig. 6 shows a schematic exploded view of the mechanical components of an RF-TENG designed for mechanical phase modulation, which can be retrofitted on the RF-TENG shown in fig. 5, the retrofit consisting of attaching a mechanical phase modulation disc 68 under the rotating disc 67 of the RF-TENG and mounting a microswitch 691 on the bottom fixed disc 69. The mechanical phase modulation disc 68(r is 125 mm) is made of 5 mm thick acrylic (PMMA) material by laser cutting, 5 ° fan-shaped small holes are cut by laser near the edge, and the distance between the edges of the adjacent small holes is 3 °; if the small fan-shaped blocks cut off are embedded in the small holes, the small holes can be filled and leveled, and if the small fan-shaped blocks are not embedded, the positions of the small holes are in a concave state. Specifically, as shown in fig. 6, the circuit led out from the stator PCB substrate 63 passes through the micro switch, specifically, the circuit led out from the stator PCB substrate 63 is connected to the conditioning circuit module 30, and the non-visible light emitting module 40 (in this embodiment, an infrared emitting module is used) and the micro switch 691 are connected to the conditioning circuit module 30 together.
Further, the switch 691 mounted on the bottom fixed plate 69 is electrically closed when it contacts the flat-filled area of the light modulation panel, and is electrically opened when it contacts the recessed area. Since the mechanical phase modulation disc 68 follows the RF-TENG in a periodic circular motion, turning over the land areas during one rotation period will start the infrared signal transmission, and turning over the valley areas will stop the infrared signal transmission. Thus, the presence of a phase of signal transmission during a cycle is achieved by the configuration of the mechanical phase modulation disc 68, which in turn is able to encode information by modulating the phase change.
Further, the phase-modulated signal is processed by the conditioning circuit module 30 to drive the invisible light emitting module 40 (in this embodiment, an infrared emitting module is used). The infrared receiving module carries out phase detection on the received infrared signals to obtain the change of the signal phase within a certain time period, and the information to be sent by the user can be recovered by decoding the information code represented by the signal phase change.
Example three:
in order to illustrate the wide applicability of the proposed mechanical modulation method to different power generation modules, OCT-TENG is used in the application embodiment of amplitude mechanical modulation. Figure 7 shows an exploded mechanical part view of the OCT-TENG used. Wherein, the friction layer electrode EAAnd EBRespectively, a Polycarbonate (PC) film and a perfluoroethylene Propylene (FEP) film having a size of 50 mm × 50 mm and a thickness of 0.1 mm. A metal electrode E made of conductive adhesive tapes with the size of 50 mm multiplied by 10 mm is attached to the position with the width of 5 mm at the two sidesLAnd ER. The metal electrode and the friction layer electrode are both adhered to a PMMA bottom plate with the thickness of 5 mm. The FEP slider 70 is made of a thin FEP (Fluorinated ethylene propylene) film having a thickness of 0.1 mm and a size of 50 mm × 50 mmAnd adhered to a 5 mm thick PMMA base having the same size by a sponge tape for easy holding. The user holds the FEP slider 70 and the slave metal electrode ELTo the metal electrode ERDuring the reciprocal sliding OCT-TENG will generate an electrical signal.
Further, the electrodes are connected to the conditioning circuit module 30 in the manner shown in fig. 7, with the metal electrode E on the left sideLAnd a friction layer electrode EBThe lower electrode is connected to the first input end of the rectifier bridge, and the right metal electrode ERAnd a friction layer electrode EAThe lower electrode is connected to a second input terminal of the rectifier bridge, and the rectified electrical signal is used to drive the non-visible light emitting module 40 (in this embodiment, an infrared emitting module is used). The infrared receiving module detects the wave crest of the received infrared signal to detect the change of the signal amplitude (whether the signal exists or not) in a certain time period, and the information to be sent by the user can be recovered by decoding the binary information code represented by the signal existence or not.
After decoding, the information transmitted in the above three embodiments through different mechanical modulation modes can be transmitted to a next-level communication network including but not limited to a wireless local area network, a wired local area network, etc. by connecting to a corresponding relay module, or connected to a data storage and processing terminal, so as to realize compatibility with the existing information and communication architecture.
The invention provides a self-powered non-visible light communication system and a self-powered non-visible light communication method with low cost and zero power consumption. For example, in the industrial field, sensing the rotating speed of a rotating component and wirelessly transmitting the rotating speed can be realized through a non-visible light signal in a mechanical frequency modulation mode when the rotating component is assembled in a turbine or a gearbox. In the civil field, an infrared remote controller without a battery can be manufactured in a mode of mechanical amplitude modulation, and an environment-friendly wireless controller solution is provided for intelligent home and smart appliances.
The background of the invention may contain background information related to the problem or environment of the present invention rather than the prior art described by others. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A self-powered non-visible light communication system based on mechanical modulation, comprising a mechanical modulation module, a power generation module, a non-visible light emitting module and a non-visible light receiving module, wherein:
the mechanical modulation module is used for modulating mechanical motion into a mechanical signal containing coded information, and the mechanical signal is used for driving the power generation module;
the power generation module is used for converting the mechanical signal into an electrical signal, and the electrical signal is used for driving the invisible light emitting module;
the non-visible light emitting module is used for converting the electric signal into a non-visible light signal and sending the non-visible light signal to the non-visible light receiving module;
the non-visible light receiving module is used for converting the non-visible light signals into electric signals to demodulate information.
2. The self-powered non-visible light communication system according to claim 1, wherein the mechanical modulation module comprises at least one of a mechanical frequency modulation unit, a mechanical phase modulation unit, and a mechanical amplitude modulation unit, wherein:
the mechanical frequency modulation unit is used for encoding information by regulating and controlling the frequency of the periodic mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information;
the mechanical phase modulation unit is used for encoding information by regulating and controlling the phase of periodic mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information;
the mechanical amplitude modulation unit is used for encoding information by regulating and controlling the output power in mechanical motion so as to modulate the mechanical motion into a mechanical signal containing the encoded information.
3. The self-powered non-visible light communication system according to claim 2,
the mechanical frequency modulation unit is used for controlling reciprocating frequency in reciprocating linear motion or controlling rotating speed in circular motion to encode information;
the mechanical phase modulation unit is used for encoding information by regulating and controlling the proportion of the acting part occupying the whole period and outputting the acting part outwards in each period in the periodic mechanical motion or regulating and controlling the positions of the acting part starting and ending in the whole period on the premise of keeping the proportion of the acting part outwards in each period to be the same;
the mechanical amplitude modulation unit is used for coding information by controlling the width of an effective acting part in linear motion, controlling the radius of the effective acting part in circular motion or controlling the existence of an output signal of each period in periodic motion.
4. The self-powered non-visible light communication system according to claim 1, wherein the power generation module employs a friction nanogenerator, a piezoelectric nanogenerator, or an electret generator.
5. The self-powered non-visible light communication system according to claim 1, wherein the non-visible light emitting module employs infrared light emitting diodes, ultraviolet light emitting diodes, or non-visible light lasers.
6. The self-powered non-visible light communication system according to claim 1, wherein the non-visible light receiving module comprises at least one of a non-visible light detecting diode, an amplifier.
7. The self-powered non-visible light communication system according to any of claims 1 to 6, further comprising a conditioning circuit module, wherein the power generation module is further configured to send the electrical signal to the conditioning circuit module; the conditioning circuit module is used for conditioning the electric signal to drive the invisible light emitting module.
8. The self-powered non-visible light communication system according to claim 7, wherein the conditioning circuit module comprises at least one of a diode rectifier bridge, a zener diode, a transformer, a switching power supply circuit.
9. The self-powered non-visible light communication system according to claim 7, wherein the step of conditioning the electrical signal by the conditioning circuit module comprises at least one of: and converting the polarity of the electric signal into the polarity of the electric signal used by the invisible light emitting module, reducing the voltage of the electric signal and increasing the current of the electric signal.
10. A self-powered non-visible light communication method based on mechanical modulation, characterized in that the self-powered non-visible light communication system of any one of claims 1 to 9 is used for communication, and the method comprises the following steps:
the mechanical modulation module modulates mechanical motion into a mechanical signal containing coded information, and the mechanical signal drives the power generation module; the power generation module converts the mechanical signal into an electrical signal, and the electrical signal drives the non-visible light emitting module; the non-visible light emitting module converts the electric signal into a non-visible light signal and sends the non-visible light signal to the non-visible light receiving module; the non-visible light receiving module converts the non-visible light signal into an electric signal to demodulate information.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346834A (en) * | 2013-06-26 | 2013-10-09 | 上海无线通信研究中心 | Visible-light energy-carrying communication system and method |
| CN103595674A (en) * | 2013-11-18 | 2014-02-19 | 浙江传媒学院 | Modulation-demodulation system of voice signal transmitted through mechanical carrier |
| CN207677648U (en) * | 2017-11-13 | 2018-07-31 | 大连海事大学 | A kind of novel self energizing remote controler based on friction nanometer power generator |
| CN109187664A (en) * | 2018-09-20 | 2019-01-11 | 电子科技大学 | Enhanced self energizing gas sensor of a kind of external force trigger-type response and preparation method thereof |
| CN111478872A (en) * | 2020-04-06 | 2020-07-31 | 西安电子科技大学 | Low-frequency mechanical antenna based on electromechanical coupling and signal processing method |
| CN113438033A (en) * | 2021-06-03 | 2021-09-24 | 大连海事大学 | Underwater electric field communication device based on friction nano generator and use method |
| CN113938050A (en) * | 2021-09-13 | 2022-01-14 | 浙江大学 | High-sensitivity instantaneous self-powered wireless sensing system of friction nano generator |
| CN114143153A (en) * | 2021-11-26 | 2022-03-04 | 中国核动力研究设计院 | Intensity-programmable-modulation radiation communication system and method |
-
2022
- 2022-03-23 CN CN202210293768.7A patent/CN114665973B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346834A (en) * | 2013-06-26 | 2013-10-09 | 上海无线通信研究中心 | Visible-light energy-carrying communication system and method |
| CN103595674A (en) * | 2013-11-18 | 2014-02-19 | 浙江传媒学院 | Modulation-demodulation system of voice signal transmitted through mechanical carrier |
| CN207677648U (en) * | 2017-11-13 | 2018-07-31 | 大连海事大学 | A kind of novel self energizing remote controler based on friction nanometer power generator |
| CN109187664A (en) * | 2018-09-20 | 2019-01-11 | 电子科技大学 | Enhanced self energizing gas sensor of a kind of external force trigger-type response and preparation method thereof |
| CN111478872A (en) * | 2020-04-06 | 2020-07-31 | 西安电子科技大学 | Low-frequency mechanical antenna based on electromechanical coupling and signal processing method |
| CN113438033A (en) * | 2021-06-03 | 2021-09-24 | 大连海事大学 | Underwater electric field communication device based on friction nano generator and use method |
| CN113938050A (en) * | 2021-09-13 | 2022-01-14 | 浙江大学 | High-sensitivity instantaneous self-powered wireless sensing system of friction nano generator |
| CN114143153A (en) * | 2021-11-26 | 2022-03-04 | 中国核动力研究设计院 | Intensity-programmable-modulation radiation communication system and method |
Non-Patent Citations (2)
| Title |
|---|
| TANG WEI: "A power-transformed-and-managed triboelectric nanogenerator and its applications in a self-powered wireless sensing node", NANO ENERGY * |
| XU LIU: "Alternating Current Electroluminescent Device Powered by Triboelectric Nanogenerator with Capacitively Driven Circuit Strategy", ADVANCED FUNCTIONAL MATERIALS * |
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