CN116032328B - Battery-less wireless communication system and method - Google Patents
Battery-less wireless communication system and method Download PDFInfo
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- CN116032328B CN116032328B CN202211634962.3A CN202211634962A CN116032328B CN 116032328 B CN116032328 B CN 116032328B CN 202211634962 A CN202211634962 A CN 202211634962A CN 116032328 B CN116032328 B CN 116032328B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The disclosure relates to a wireless communication system without a battery and a wireless communication method without a battery, and relates to the technical field of communication. The battery-less wireless communication system includes: a wireless information module without battery and a base station module; the wireless information module without the battery comprises an energy collection module, a first control module and a first wireless communication module, wherein the first control module and the first wireless communication module are connected with the energy collection module, the power consumption of the first wireless communication module and the first control module is in a micro-watt level or a nano-watt level, and the first wireless communication module is a non-backscatter communication module; the base station module comprises a second wireless communication module, a second control module and a communication energy supply module, the energy collection module acquires micro-watt or nano-watt energy and supplies the micro-watt or nano-watt energy to the first control module and the first wireless communication module, and the first control module is used for controlling the first wireless communication module to send relevant information to the second wireless communication module. The present disclosure provides a wireless communication system without a battery.
Description
Technical Field
The present disclosure relates to the field of communication technologies, and in particular, to a wireless communication system without a battery and a wireless communication method without a battery.
Background
Compared with a wired communication system, the wireless communication system avoids complicated connecting wires, saves wires and cables, improves the convenience of operation and has wide application prospect.
However, in the existing wireless communication system, both the information acquisition module and the wireless router for transmitting information need a battery to supply energy, which not only cannot achieve the purpose of energy saving, but also is unfavorable for popularization and application of the wireless communication system.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure aims to provide a wireless communication system without a battery and a wireless communication method without the battery, so as to provide the wireless communication system without the battery.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the invention.
According to a first aspect of the present disclosure, there is provided a batteryless wireless communication system comprising: a wireless information module without battery and a base station module; the wireless information module without the battery comprises an energy collection module, a first control module and a first wireless communication module, wherein the first control module and the first wireless communication module are connected with the energy collection module, the first wireless communication module is connected with the first control module, the power consumption of the first wireless communication module and the first control module is in a micro-watt level or a nano-watt level, and the first wireless communication module is a non-backscatter communication module; the base station module comprises a second wireless communication module, a second control module and a communication energy supply module, wherein the communication energy supply module, the second wireless communication module and the second control module are connected in pairs; the energy collection module acquires micro-watt or nano-watt energy and then supplies the micro-watt or nano-watt energy to the first control module and the first wireless communication module, and the first control module is used for controlling the first wireless communication module to send relevant information to the second wireless communication module.
In one exemplary embodiment of the present disclosure, the first wireless communication module includes: at least one radio frequency oscillator; the radio frequency oscillator comprises a power supply module, a triode, a frequency selecting module and a signal transmitting module; the power supply module comprises a direct current power supply, a first inductor and a second inductor, wherein the direct current power supply is connected with a collector electrode of the triode through the first inductor, and is connected with a base electrode of the triode through the second inductor and used for controlling the triode to generate a micro-watt or nano-watt radio frequency oscillation signal under a preset voltage; the frequency selecting module is connected with the emitting electrode of the triode and is used for selecting the output frequency of the radio frequency oscillation signal; the signal transmitting module is connected with the collector electrode of the triode and is used for transmitting the radio frequency oscillation signal with the selected output frequency to the second wireless communication module.
In an exemplary embodiment of the present disclosure, the frequency selection module includes: a third inductance, a resistance, and a first capacitance; after the third inductor and the resistor are connected in series to form a series circuit, one end of the series circuit is connected with the emitter of the triode, and the other end of the series circuit is grounded; one end of the first capacitor is connected with the emitter of the triode, and the other end of the first capacitor is grounded.
In an exemplary embodiment of the present disclosure, the signal transmission module includes: a second capacitor and an antenna; one end of the second capacitor is connected with the collector electrode of the triode, and the other end of the second capacitor is connected with the antenna.
In an exemplary embodiment of the present disclosure, the base station module further includes: an energy emission module; the energy transmitting module is used for transmitting microwave energy to the energy collecting module, and the frequency of the microwave energy transmitted by the energy transmitting module is different from the frequency of the signal transmitted by the first wireless communication module by at least 100MHz.
In an exemplary embodiment of the disclosure, the first wireless communication module is further configured to periodically send ID information to the second wireless communication module, and send the intensity of the received microwave energy; the energy transmitting module is used for adjusting the parameters of the transmitted microwave energy according to the ID information and the intensity of the microwave energy so as to enable the energy received by the energy collecting module to reach the maximum value.
In one exemplary embodiment of the present disclosure, the energy transmitting module is a single antenna module; after the ID information of the wireless information module without the battery passes verification, the energy transmitting module conducts directional continuous energy supply to the energy collecting module so that the energy received by the energy collecting module reaches the maximum value.
In one exemplary embodiment of the present disclosure, the energy transmitting module is a multi-antenna module having a phased array; in an initial stage, the energy transmitting module transmits microwave energy outwards through an antenna; and after the ID information of the wireless information module without the battery passes verification, the energy transmitting module adjusts each phase of the phased array to enter a multi-antenna energy supply state so as to enable the energy received by the energy collecting module to reach the maximum value.
In one exemplary embodiment of the present disclosure, the battery-less wireless information module includes a sensor; the sensor is connected with the first control module and the energy collection module, and the power consumption of the sensor is micro-watt or nano-watt; the sensor is used for acquiring environment information and providing the environment information for the first control module, and the first control module is used for controlling the first wireless communication module to send the environment information to the second wireless communication module.
According to a second aspect of the present disclosure, there is provided a wireless communication method without battery, applied to the wireless communication system without battery described above, the wireless communication system without battery including a wireless information module without battery and a base station module, characterized in that the method includes: after the energy collection module of the wireless information module without the battery obtains micro-watt level or nano-watt level energy, the micro-watt level or nano-watt level energy is supplied to a first control module and a first wireless communication module of the wireless information module without the battery, and the first wireless communication module is controlled to send related information to a second wireless communication module of the base station module through the first control module; the first wireless communication module sends the related information to the second wireless communication module in a non-backscattering communication mode, and the power consumption of the first wireless communication module and the first control module is micro watt level or nano watt level.
The technical scheme provided by the disclosure can comprise the following beneficial effects:
According to the wireless communication system without the battery, the wireless information module without the battery and the base station module are arranged, and after the energy collection module in the wireless information module without the battery collects micro-watt or nano-watt energy, the wireless communication module with the power consumption of micro-watt or nano-watt and the first control module can be supplied, and the first control module can control the first wireless communication module to send relevant information to the second wireless communication module without battery equipment; because the first wireless communication module is a non-backscatter communication module, the corresponding energy collection module can collect environmental energy, and is used for the first wireless communication module to transmit the information in the wireless information module without the battery or the collected environmental information to the second wireless communication module, and the problem of signal interference can not exist. Therefore, the base station module does not need to be provided with a complex interference unit, so that the base station module can be miniaturized, and the power consumption of the base station module is obviously reduced. For the whole wireless communication system without battery, both the wireless information module without battery and the base station module are improved in power consumption and volume; due to low power consumption, the communication distance between the wireless information module without battery and the base station module can be obviously improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort. In the drawings:
fig. 1 schematically illustrates a structural schematic diagram of a batteryless wireless communication system in an exemplary embodiment according to the present disclosure;
Fig. 2 schematically illustrates a schematic structure of a radio frequency oscillator according to an exemplary embodiment of the present disclosure;
fig. 3 schematically illustrates a structural schematic diagram of another battery-less wireless communication system in an exemplary embodiment according to the present disclosure;
Fig. 4 schematically illustrates a structural schematic of an energy emitting module in an exemplary embodiment according to the present disclosure;
fig. 5 schematically illustrates a structural schematic diagram of another energy emitting module in an exemplary embodiment according to the present disclosure;
fig. 6 schematically illustrates an operational state diagram of an energy emitting module in an exemplary embodiment according to the present disclosure;
fig. 7 schematically illustrates an operational state diagram of another energy emitting module in an exemplary embodiment according to the present disclosure;
fig. 8 schematically illustrates an operational state diagram of another energy emitting module in an exemplary embodiment according to the present disclosure;
Fig. 9 schematically illustrates a structural diagram of another battery-less wireless communication system in an exemplary embodiment according to the present disclosure;
fig. 10 schematically illustrates a flowchart of a method of batteryless wireless communication in accordance with an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microprocessor devices.
Example 1
Embodiments of the present disclosure provide a wireless communication system without a battery. Referring to fig. 1, a schematic diagram of a structure of a batteryless wireless communication system in an embodiment of the present disclosure is shown.
As shown in fig. 1, the batteryless wireless communication system may include: a batteryless wireless information module 100 and a base station module 200. The wireless information module without battery 100 can automatically collect energy under the condition of no power supply source such as battery, and transmit the collected information or the information carried by the wireless information module to the base station module 200, and the base station module 200 can transmit the information to the wireless internet, so as to realize the wireless information collection function.
In practical applications, the above wireless information module 100 without battery may include an energy collecting module 110, a first control module 120 and a first wireless communication module 130, where the first control module 120 and the first wireless communication module 130 are respectively connected to the energy collecting module 110, and after the energy collecting module 110 collects enough energy, the energy is supplied to the first control module 120 and the first wireless communication module 130 for working. In addition, the first control module 120 is connected to the first wireless communication module 130, where the first control module 120 is configured to control the first wireless communication module 130 to send out related information, and the related information may be preset information stored in the first control module 120 or environmental information acquired through other ways, which is described in detail in the following embodiments.
In practical applications, the energy collecting module 110 may be a device for collecting environmental energy, such as a photovoltaic module, for collecting energy by absorbing solar energy; and may be a device for collecting energy such as heat energy. In addition, the energy harvesting module 110 may also be a device that absorbs microwave signals in the environment, which may be directional emitted microwave signals, microwave signals present in the environment, etc., and the exemplary embodiments of the present disclosure are not particularly limited in this regard.
In the exemplary embodiment of the present disclosure, the power consumption of the first control module 120 and the first wireless communication module 130 is in micro watt level or nano watt level, so that the load of the energy collection module 110 for collecting energy can be reduced, and the operation needs of the first control module 120 and the first wireless communication module 130 can be supplied with only a small amount of energy collected.
In practical applications, the first control module 120 of micro-watt level or nano-watt level may be an existing micro-watt level controller such as ApolloMCU or ForgeFPGA; the power consumption of the microwatts level controller in the working state is 100 microwatts, and the power consumption in the non-working state is several microwatts, so that the first control module 120 has lower energy requirement even in the working state, thus greatly reducing the energy requirement of the energy collecting module 110 and providing a basis for reducing the power consumption of the whole wireless information module 100 without a battery.
In the exemplary embodiments of the present disclosure, the power consumption of the first wireless communication module 130 is not only micro-watt or nano-watt, but the first wireless communication module 130 is also a non-backscatter communication module. In practical applications, when the energy collection module 110 collects environmental energy, the backscatter communication module is inoperable, but the first wireless communication module 130, which is not backscatter, can operate using the environmental energy collected by the energy collection module 110 and transmit the information in the wireless information module 100 without battery or the collected environmental information to the base station module 200.
In addition, if the energy collecting module 110 collects the directional emitted microwave signals, the backscatter communication module may reflect the directional emitted microwave signals, so as to implement communication with the base station module 200, but since the microwave signals collected by the energy collecting module 110 and the microwave signals reflected by the backscatter module belong to the same signal, there is a problem of signal interference for the base station module 200, and the problem of interference must be solved, which inevitably results in a very complex base station module 200, and is unfavorable for miniaturization and power consumption reduction of the base station module 200.
Based on the above-mentioned problems of the backscatter communication module, the first wireless communication module 130 of the non-backscatter communication method according to the exemplary embodiment of the present disclosure may still operate by using energy generated by the environmental energy source when the energy source is collected by the energy collecting module 110, and the information in the wireless information module without battery or the collected environmental information is transmitted to the base station module 200, so that the problem of signal interference will not exist. When the energy collection module 110 collects the directional emitted microwave signals, the first wireless communication module 130 can also work by using the energy generated by the microwave signals, and transmit the information in the wireless information module without battery or the collected environmental information to the base station module 200, and in the process of actually sending the information, the signal sent by the first wireless communication module 130 can be set to be different from the aforementioned microwave signals, so that the signal interference problem of the base station module 200 can be easily avoided, and the base station module 200 does not need to be provided with a complex interference unit to solve the interference problem, so that the base station module 200 can be miniaturized, for example, the size of a usb disk can be greatly reduced, and the power consumption of the base station module 200 can be also obviously reduced. Both the wireless information module 100 and the base station module 200 are significantly improved in terms of power consumption and bulk for the overall wireless communication system without battery.
In the exemplary embodiment of the present disclosure, the first wireless communication module 130 includes at least one radio frequency oscillator 131, the radio frequency oscillator 131 is a micro-watt or nano-watt radio frequency oscillator, and the radio frequency oscillator 131 may control whether to generate a radio frequency signal by an OOK modulation signal; whether or not to generate a radio frequency signal may also be controlled by the FSK modulated signal.
In practical applications, when the communication module of the base station module 200 selects the FSK modulation mode, the first wireless communication module 130 is FSK modulation; when the communication module of the base station module 200 selects the OOK modulation mode, the first wireless communication module 130 is OOK modulated. And in particular may be determined according to actual circumstances, to which the exemplary embodiments of the present disclosure are not particularly limited.
In the exemplary embodiment of the present disclosure, the radio frequency oscillator 131 may be implemented by a tunnel diode or a triode. The internal structure of the radio frequency oscillator 131 will be briefly described here by taking a triode as an example.
Referring to fig. 2, a schematic structural diagram of a radio frequency oscillator provided in an exemplary embodiment of the present disclosure is shown. The radio frequency oscillator 131 provided in the exemplary embodiments of the present disclosure may include a power module, a triode, a frequency selection module, and a signal transmission module; as shown in fig. 2, the power module may include a DC power supply DC, a first inductor L1, and a second inductor L2, where the DC power supply DC is connected to a collector of a triode (shown in a dashed line frame in fig. 2) through the first inductor L1, and the first inductor L1 may play a role in isolating ac and DC for the triode; in addition, the direct current power supply DC is connected with the base electrode of the triode through the second inductor L2, the second inductor L2 can play a role in isolating alternating current from direct current to the triode, the base stage of the triode generates positive feedback to the collector electrode of the triode through the second inductor L2, and then negative impedance is generated at the collector electrode, and a negative impedance oscillator can be obtained through the negative impedance principle; after the direct current is conducted to the direct current power supply DC through the first inductor L1 and the second inductor L2, the direct current power supply DC can apply a certain voltage to the triode, and when the voltage reaches a preset voltage, the triode can generate a micro-watt or nano-watt radio frequency oscillation signal which can be used for transmitting related information.
In practical applications, the transistors have different preset voltages, and some transistors can generate radio frequency oscillation signals at a lower preset voltage, so that radio frequency oscillation signals can be generated at a lower power consumption, i.e. micro-watt or nano-watt power consumption, so as to control the power consumption of the first wireless communication module 130 to be at the micro-watt or nano-watt level, and further reduce the power consumption of the wireless information module 100 without a battery.
In the exemplary embodiment of the disclosure, after the rf oscillation signal is generated, the rf oscillation signal may be further selected in frequency, so that a signal with a preset frequency may be selected for output. That is, a frequency selection module may be connected to the emitter of the triode, and the frequency selection module may be configured to select an output frequency of the radio frequency oscillation signal generated by the triode to determine the radio frequency oscillation signal having the preset frequency. The specific magnitude of the preset frequency will be described in detail in the following embodiments.
In practical applications, the frequency selection module may be set according to practical needs, and in an exemplary embodiment of the present disclosure, as shown in fig. 2, the frequency selection module may include: the third inductor L3, the resistor R1 and the first capacitor C1 are connected in series to form a series circuit, one end of the series circuit is connected with the emitter of the triode, and the other end of the series circuit is grounded; one end of the first capacitor C1 is connected with the emitter of the triode, and the other end of the first capacitor C1 is grounded. The frequency of the rf oscillation signal may be fine-tuned by the third inductor L3 and the first capacitor C1 to adjust to a preset frequency, and the power of the rf oscillator 131 may be adjusted by the resistor R1.
In the exemplary embodiment of the present disclosure, the signal transmitting module is connected to the collector of the triode, and is used for transmitting the radio frequency oscillation signal with the selected output frequency, that is, the radio frequency oscillation signal with the preset frequency, to the wireless communication module of the base station module 200.
Specifically, the signal transmitting module may include a second capacitor C2 and an antenna ANT; one end of the second capacitor C2 is connected to the collector of the triode, and the other end of the second capacitor C2 is connected to the antenna ANT. The second capacitor C2 plays a role of blocking the dc-to-rf oscillation signal, so as to ensure that the signal transmitted by the antenna ANT is an rf oscillation signal.
Compared with the existing milliwatt-level radio frequency oscillator, the power consumption of the radio frequency oscillator 131 provided by the exemplary embodiment of the present disclosure is less than 100 microwatts, the air interface radiation power is less than-20 dBm, and the purpose of the microwatts or even nanowatt-level radio frequency oscillator can be achieved, so that the power consumption of the first wireless communication module 130 is ensured to be in microwatts or nanowatt level, the work load of the energy collection module 110 is reduced, and the battery-free wireless information module 100 can be ensured to work in a low power consumption state.
In an exemplary embodiment of the present disclosure, the base station module 200 may include a second wireless communication module 210, a second control module 220, and a communication power supply module 230, wherein the communication power supply module 230, the second wireless communication module 210, and the second control module 220 are connected in pairs; the communication power supply module 230 supplies power to the second wireless communication module 210 and the second control module 220, and the communication power supply module 230 transfers information received by the second wireless communication module 210 to the internet under the control of the second control module 220.
In practical applications, the communication energy supply module 230 may be a network cable, or may be a device such as a USB module capable of performing internet information transmission. In addition, according to practical needs, the second wireless communication module 210 may also be a low-power consumption communication device, for example, an ultra-low-power consumption high-performance Si24R1 wireless transceiver chip, and since the modulation mode of Si24R1 is FSK, the communication module of the first wireless communication module 130 that communicates with the second wireless communication module 210 also needs to be an FSK modulation mode. The second wireless communication module 210 selecting the FSK modulation scheme has a high receiving sensitivity up to-120 dBm, and thus, although the air interface radiation power of the above-mentioned micro-watt first wireless communication module 130 is at a very low level (-30 dBm to-10 dBm), the communication distance thereof can be up to a relatively long level due to the high receiving sensitivity.
In the exemplary embodiment of the present disclosure, after the energy collection module 110 obtains the micro-watt level or nano-watt level of energy and supplies the energy to the first control module 120 and the first wireless communication module 130, the first control module 120 is configured to control the first wireless communication module 130 to send related information to the second wireless communication module 210. That is, the first wireless communication module 130 transmits the generated rf oscillation signal with the predetermined frequency to the second wireless communication module 210 of the base station module 200.
In a first embodiment, in the wireless communication system without a battery provided in the exemplary embodiment of the present disclosure, after the energy collection module in the wireless information module without a battery collects the micro-watt level or nano-watt level energy, the wireless communication module with power consumption of micro-watt level or nano-watt level and the first control module may be supplied, and the first control module may control the first wireless communication module to send related information to the second wireless communication module; because the first wireless communication module is a non-backscatter communication module, the corresponding energy collection module can collect environmental energy, and is used for the first wireless communication module to transmit the information in the wireless information module without the battery or the collected environmental information to the second wireless communication module, and the problem of signal interference can not exist. Therefore, the base station module does not need to be provided with a complex interference unit, so that the base station module can be miniaturized, and the power consumption of the base station module is obviously reduced. For the whole wireless communication system without battery, both the wireless information module without battery and the base station module are improved in power consumption and volume; due to low power consumption, the communication distance between the wireless information module without battery and the base station module can be obviously improved.
Example two
On the basis of the first embodiment, referring to fig. 3, a second embodiment of the disclosure provides another wireless communication system without battery. In comparison with the batteryless wireless communication system of the first embodiment, an energy transmission module 240 is added to the base station module 200. The energy transmitting module 240 is configured to transmit microwave energy to the energy collecting module 110, which is equivalent to the energy required by the wireless information module 100 without battery, and is directly provided by the base station module 200, so that energy supply and information transmission inside the wireless communication system without collecting energy from environmental energy sources can be realized.
In practical applications, the second wireless communication module 210 receives not only the related information sent by the first wireless communication module 130, but also the microwave energy sent by the energy emitting module 240 during the process of receiving the signals, and there is an interference problem between the two signals. Based on this, in the exemplary embodiment of the present disclosure, the frequency of the microwave energy transmitted by the energy transmitting module 240 is different from the frequency of the signal transmitted by the first wireless communication module 130 by at least 100MHz.
That is, the preset frequency of the signal transmitted by the first wireless communication module 130 is at least 100MHz greater or less than the frequency of the microwave energy transmitted by the energy transmitting module 240. For example, when the frequency of the microwave energy transmitted by the energy transmitting module 240 is 900MHz, the frequency of the signal transmitted by the first wireless communication module 130 may be 2.4GHz, in this case, for the second wireless communication module 210, the difference between the frequency of the microwave energy received by the second wireless communication module 210 and the frequency of the signal transmitted by the first wireless communication module 130 is relatively large, so that the difference between the two signals is easily distinguished, and basically, there is no interference problem between the two signals, that is, the interference problem is easily solved, and the second wireless communication module 210 easily identifies the relevant information transmitted by the first wireless communication module 130 that needs to be received.
That is, in the wireless communication system without battery provided in the embodiment of the disclosure, in terms of anti-interference, no complex structure is required for the base station module 200, and only the signal with the preset frequency is selected to be received when the signal is received, so that the structure and the volume of the base station module 200 are greatly simplified, and the power consumption is also inevitably greatly reduced.
In addition, in the embodiment of the disclosure, the wireless information module 100 without battery is powered by the energy transmitting module 240 directly using the microwave signal, so that the characteristics of large microwave capacity, good quality and long distance transmission are utilized, and a larger space is provided for popularization and application of the wireless communication system without battery. Wherein the microwaves may be electromagnetic waves having a wavelength between 0.1 mm and 1 meter.
In the exemplary embodiment of the present disclosure, the distance between the batteryless wireless information module 100 and the base station module 200 is not only determined by the communication distance between the first wireless communication module 130 and the second wireless communication module 210, but also the energy propagation distance between the energy emitting module 240 and the energy collecting module 110 needs to be considered. Since the total power consumption of the batteryless wireless information module 100 is also within a microwatt level, even a small amount of energy source provided by the energy emitting module 240 can be satisfied for the remote power supply of the batteryless wireless information module 100.
In practical applications, the energy transmitting module 240 may have a plurality of different designs, for example, the energy transmitting module 240 may be a single antenna module including an oscillator, a set of phase shifters and a power amplifier, as shown in fig. 4; a multi-antenna module comprising an oscillator, a plurality of sets of phase shifters and a power amplifier is also possible, as shown in fig. 5. For example, the energy emitting module 240 may be a single antenna, a dual antenna, a four antenna, an eight antenna, or sixteen antenna, etc.
Specifically, the oscillator in the energy emitting module 240 is configured to generate a microwave signal, and specifically, the oscillator generates a microwave signal with a repeatable preset frequency when excited. The preset frequency of the microwave signal may be determined according to practical situations, and the exemplary embodiment of the present disclosure is not particularly limited thereto. The phase shifter is used for adjusting the phase of the microwave signal, the output end of the phase shifter is connected with the input end of the power amplifier, the power amplifier is used for amplifying the power of the phase-shifted microwave signal, the output end of the power amplifier is connected with the transmitting antenna, and the transmitting antenna is used for transmitting the amplified microwave signal.
In the exemplary embodiment of the present disclosure, the first wireless communication module 130 is further configured to periodically transmit ID information to the second wireless communication module 210, and transmit the intensity of the received microwave energy of the energy emitting module 240; the ID information is the identification information of the wireless battery-less information module 100, and it can be identified whether the current wireless battery-less information module 100 is the target wireless battery-less information module.
In the base station module 200 provided in this embodiment of the present disclosure, the second control module 220 is connected to the energy transmitting module 240, and the second control module 220 may control the phase shifter 1132 to adjust the phase of the microwave signal according to the received intensity of the microwave energy of the energy transmitting module 240, that is, the difference between the feedback intensity and the original microwave energy intensity, so as to maximize the difference between the feedback signal and the original microwave signal. Thereby realizing the purpose that the energy emitting module 240 is used to adjust the parameters of the transmitted microwave energy according to the ID information and the intensity of the microwave energy, so as to maximize the energy received by the energy collecting module 110.
In the case where the energy transmission module 240 is a single antenna module, the energy transmission module 240 may initially transmit microwave energy outwardly in an intermittent operation to reduce the average radiated power. Assuming that the single antenna radiates out at a power of 30dBm, the energy harvesting sensitivity of the energy harvesting module 110 is-20 dBm and the radiation frequency is 900Mhz. The microwave power supply distance is now about 10 meters, as shown in fig. 6.
When the wireless information module 100 is present or not within 10 meters, the wireless information module 100 obtains microwave energy. When the acquired microwave energy reaches a certain value, the wireless information module 100 without battery periodically transmits its own ID information and the intensity of the received microwave energy. The base station module 200 performs identity recognition after receiving the ID information, that is, after the ID information of the wireless information module 100 without battery passes the verification, the energy transmitting module 240 performs directional continuous energy supply to the energy collecting module 110, that is, the base station module 200 enters a continuous energy supply stage, so that the energy received by the energy collecting module 110 reaches the maximum value. When the related information to be transferred is transferred, the wireless information module 100 without battery sends a wireless data packet to inform the base station module 200, and the base station module 200 radiates the microwave energy outwards in a low duty cycle mode, i.e. returns to the initial state.
In the case where the energy emitting module 240 is a multi-antenna module having a phased array, the energy emitting module 240 emits microwave energy outwardly through one antenna in an initial stage; assuming that the energizing distance is also 10 meters as shown in fig. 7, the antenna is still operated in an intermittent manner, i.e. with a low duty cycle, to reduce the average radiated power.
When the wireless information module 100 is present or not within 10 meters, the wireless information module 100 obtains microwave energy. When the acquired microwave energy reaches a certain value, the wireless information module 100 without battery periodically transmits its own ID information and the intensity of the received microwave energy. The base station module 200 performs identity recognition after receiving the ID information, that is, enters a multi-antenna power supply state after the ID information of the wireless information module 100 without battery passes the verification, as shown in fig. 8.
After entering the multi-antenna power state, the energy transmitting module 240 adjusts the phase of each path of the phased array, and the other antennas transmit microwave energy outwards, where the phased array has a gain of N-1 times toward the wireless information module 100 without battery, where N is the total number of antennas. The microwave energy emitted by the multiple antennas may support wireless communication, and even sensing, of the batteryless wireless information module 100. When it has completed the sensing and communication operations, the base station module 200 is notified, and the base station module 200 stops transmitting energy outwardly from its phased array, and only the single antenna is kept radiating energy outwardly at a low duty cycle, i.e., returns to its original state.
Example III
On the basis of the first embodiment or the second embodiment, as shown in fig. 9, the wireless information module 100 without a battery of the wireless communication system provided by the exemplary embodiment of the disclosure may further include a sensor 140, where the sensor 140 is connected to the first control module 120 and the energy collecting module 110, and the power consumption of the sensor 140 is in a micro watt level or a nano watt level; the energy of the sensor 140 is provided by the energy harvesting module 110. The energy collection module 110 may collect environmental energy, and may be microwave energy provided by the energy emitting module 240 in the second embodiment.
In practical applications, the sensor 140 is configured to acquire environmental information and provide the environmental information to the first control module 120, and the first control module 120 is configured to control the first wireless communication module 130 to send the environmental information to the second wireless communication module 210.
The wireless communication system without battery provided in the embodiment of the present disclosure not only can transmit pre-stored information in the wireless information module without battery 100, but also can obtain surrounding environment information through the sensor 140. In addition, since the wireless information module 100 without battery is not powered by the battery, the feature can further expand the application range of the wireless information module 100 without battery, and even can be applied in a severe environment which is unfavorable for battery replacement, thereby providing technical support for expanding the application range of the sensing communication technology.
Example IV
The embodiment of the present disclosure further provides a wireless communication method without a battery, and referring to fig. 10, the wireless communication method without a battery may be applied to the wireless communication system without a battery in the foregoing embodiment, and may specifically include the following steps:
Step S1010, after the energy collection module of the wireless information module without battery obtains the micro-watt level or nano-watt level energy, the energy is supplied to the first control module and the first wireless communication module of the wireless information module without battery, and the first wireless communication module is controlled by the first control module to send related information to the second wireless communication module of the base station module;
The first wireless communication module sends related information to the second wireless communication module in a non-back scattering communication mode, and the power consumption of the first wireless communication module and the first control module is in a micro-watt level or a nano-watt level.
The specific principles of the above wireless communication method without battery have been described in detail in the above embodiments, and are not repeated here.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present disclosure are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (solidstate disk, SSD)), etc. In embodiments of the present disclosure, a computer may include the apparatus described previously.
Although the disclosure has been described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed disclosure, from a review of the figures, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the present disclosure has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof can be made without departing from the spirit and scope of the disclosure. Accordingly, the specification and drawings are merely exemplary illustrations of the present disclosure as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the disclosure. It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A batteryless wireless communication system, comprising: a wireless information module without battery and a base station module; wherein,
The wireless information module without the battery comprises an energy collection module, a first control module and a first wireless communication module, wherein the first control module and the first wireless communication module are connected with the energy collection module, the first wireless communication module is connected with the first control module, the power consumption of the first wireless communication module and the first control module is in a micro-watt level or a nano-watt level, and the first wireless communication module is a non-backscatter communication module;
The base station module comprises a second wireless communication module, a second control module and a communication energy supply module, wherein the communication energy supply module, the second wireless communication module and the second control module are connected in pairs;
The energy collection module acquires micro-watt or nano-watt energy and then supplies the micro-watt or nano-watt energy to the first control module and the first wireless communication module, and the first control module is used for controlling the first wireless communication module to send related information to the second wireless communication module;
The first wireless communication module includes: at least one radio frequency oscillator; the radio frequency oscillator comprises a power supply module, a triode, a frequency selecting module and a signal transmitting module; the power supply module comprises a direct current power supply, a first inductor and a second inductor, wherein the direct current power supply is connected with a collector electrode of the triode through the first inductor, and is connected with a base electrode of the triode through the second inductor and used for controlling the triode to generate a micro-watt or nano-watt radio frequency oscillation signal under a preset voltage; the frequency selecting module is connected with the emitting electrode of the triode and is used for selecting the output frequency of the radio frequency oscillation signal; the signal transmitting module is connected with the collector electrode of the triode and is used for transmitting the radio frequency oscillation signal with the selected output frequency to the second wireless communication module;
The frequency selecting module comprises: a third inductance, a resistance, and a first capacitance; after the third inductor and the resistor are connected in series to form a series circuit, one end of the series circuit is connected with the emitter of the triode, and the other end of the series circuit is grounded; one end of the first capacitor is connected with the emitter of the triode, and the other end of the first capacitor is grounded.
2. The system of claim 1, wherein the signaling module comprises: a second capacitor and an antenna; wherein,
One end of the second capacitor is connected with the collector electrode of the triode, and the other end of the second capacitor is connected with the antenna.
3. The system of claim 1, wherein the base station module further comprises: an energy emission module; wherein,
The energy emission module is connected with the second control module and the communication energy supply module;
The energy transmitting module is used for transmitting microwave energy to the energy collecting module, and the frequency of the microwave energy transmitted by the energy transmitting module is different from the frequency of the signal transmitted by the first wireless communication module by at least 100MHz.
4. The system of claim 3, wherein the first wireless communication module is further configured to periodically transmit ID information to the second wireless communication module and transmit the intensity of the received microwave energy;
The energy transmitting module is used for adjusting the parameters of the transmitted microwave energy according to the ID information and the intensity of the microwave energy so as to enable the energy received by the energy collecting module to reach the maximum value.
5. The system of claim 4, wherein the energy transmission module is a single antenna module;
after the ID information of the wireless information module without the battery passes verification, the energy transmitting module conducts directional continuous energy supply to the energy collecting module so that the energy received by the energy collecting module reaches the maximum value.
6. The system of claim 4, wherein the energy transmission module is a multi-antenna module having a phased array;
In an initial stage, the energy transmitting module transmits microwave energy outwards through an antenna; and after the ID information of the wireless information module without the battery passes verification, the energy transmitting module adjusts each phase of the phased array to enter a multi-antenna energy supply state so as to enable the energy received by the energy collecting module to reach the maximum value.
7. The system of any one of claims 1-6, wherein the batteryless wireless information module comprises a sensor; wherein,
The sensor is connected with the first control module and the energy collection module, and the power consumption of the sensor is micro-watt or nano-watt;
The sensor is used for acquiring environment information and providing the environment information for the first control module, and the first control module is used for controlling the first wireless communication module to send the environment information to the second wireless communication module.
8. A batteryless wireless communication method applied to the batteryless wireless communication system of any one of claims 1-7, the batteryless wireless communication system comprising a batteryless wireless information module and a base station module, the method comprising:
After the energy collection module of the wireless information module without the battery obtains micro-watt level or nano-watt level energy, the micro-watt level or nano-watt level energy is supplied to a first control module and a first wireless communication module of the wireless information module without the battery, and the first wireless communication module is controlled to send related information to a second wireless communication module of the base station module through the first control module;
The first wireless communication module sends the related information to the second wireless communication module in a non-backscattering communication mode, and the power consumption of the first wireless communication module and the first control module is micro watt level or nano watt level.
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