CN115277270B - Method, system and equipment for wireless communication of passive terminal - Google Patents
Method, system and equipment for wireless communication of passive terminal Download PDFInfo
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- CN115277270B CN115277270B CN202210877773.2A CN202210877773A CN115277270B CN 115277270 B CN115277270 B CN 115277270B CN 202210877773 A CN202210877773 A CN 202210877773A CN 115277270 B CN115277270 B CN 115277270B
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- 238000004891 communication Methods 0.000 title claims abstract description 158
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 49
- 239000003990 capacitor Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000015654 memory Effects 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 15
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application aims to provide a method, a system and equipment for wireless communication of a passive terminal, wherein a radio frequency single-tone signal is generated through a preset base station and transmitted to a corresponding terminal; transmitting the radio frequency single-tone signal to an electromagnetic conversion module in a terminal, converting the radio frequency single-tone signal into direct current through the electromagnetic conversion module, and storing the direct current in a preset capacitor; when the electric quantity of a preset capacitor is matched with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal; and acquiring a communication signal sent by the preset base station through the started terminal based on the specified communication protocol to complete data communication. The base station remotely controls the terminal to be started and shut down in the state of no power input, thereby realizing the passive communication of the terminal.
Description
Technical Field
The present disclosure relates to the field of computers, and in particular, to a method, system, and device for wireless communication of a passive terminal.
Background
In the current long-distance wireless communication system, the terminal side can only be used by using power input equipment such as alternating current, a battery or a matched solar panel. And when the terminal is used, the terminal can only control the starting, the shutdown or the standby by itself, and can not be started remotely through the base station side in the unpowered state.
Disclosure of Invention
An object of the present application is to provide a method, a system and a device for wireless communication of a passive terminal, which solve the problem in the prior art that a terminal side of remote wireless communication cannot be started up for communication in a power-free state.
According to one aspect of the present application, there is provided a method of passive terminal wireless communication, the method comprising:
generating a radio frequency single-tone signal through a preset base station, and transmitting the radio frequency single-tone signal to a corresponding terminal;
transmitting the radio frequency single-tone signal to an electromagnetic conversion module in a terminal, converting the radio frequency single-tone signal into direct current through the electromagnetic conversion module, and storing the direct current in a preset capacitor;
when the electric quantity of a preset capacitor is matched with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal;
and acquiring a communication signal sent by the preset base station through the started terminal based on the specified communication protocol to complete data communication.
Optionally, after the communication signal sent by the preset base station is acquired by the terminal based on the specified communication protocol, the method further includes:
transmitting a feedback communication signal to the preset base station based on the communication signal, and analyzing the feedback communication signal through the preset base station to obtain an analysis result;
and determining a transmission period for transmitting the radio frequency single-tone signal based on the analysis result.
Optionally, analyzing the feedback communication signal by the preset base station to obtain an analysis result, including:
acquiring the feedback communication signal through the preset base station, and carrying out specified reduction processing on the feedback communication signal to obtain power related parameters of the terminal, wherein the power related parameters comprise signal receiving power data and transmitting power data;
and calculating the duration of single-time transmitting radio frequency single-tone signals based on the power related parameters.
Optionally, performing a specified restoration process on the feedback communication signal to obtain a power related parameter of the terminal, including:
amplifying the feedback communication signal to obtain an amplified feedback communication signal;
and performing down-conversion processing and demodulation processing on the amplified feedback communication signal to obtain the power-related parameter.
Optionally, the generating, by the preset base station, a radio frequency single tone signal includes:
configuring radio frequency single tone signals of corresponding frequencies based on each terminal;
and generating radio frequency single-tone signals with a plurality of frequencies through the preset base station.
According to another aspect of the present application, there is also provided a system for wireless communication of a passive terminal, the system comprising a preset base station and a terminal, wherein,
the preset base station is used for generating a radio frequency single-tone signal and transmitting the radio frequency single-tone signal to a corresponding terminal;
the terminal comprises an electromagnetic conversion module, a preset capacitor, a wireless communication module and a data interface, wherein the electromagnetic conversion module is used for acquiring a radio frequency single-tone signal sent by the base station, converting the radio frequency single-tone signal into direct current and storing the direct current in the preset capacitor;
the preset capacitor is used for storing direct current obtained by conversion of the electromagnetic conversion module; when the electric quantity of the preset capacitor is matched with the power supply quantity of the wireless communication module, the terminal is powered to be started;
the terminal is also used for acquiring a communication signal sent by the preset base station based on a specified communication protocol to complete data communication.
Optionally, the preset base station is further configured to obtain a feedback communication signal sent by the terminal, analyze the feedback communication signal, and determine a power related parameter of the terminal;
and determining a transmission period for transmitting the radio frequency single-tone signal based on the power-related parameter.
Optionally, the preset base station further comprises a transmitting module, wherein,
the transmitting module comprises a modulating unit, an up-conversion unit, an amplifying unit and an antenna, wherein the modulating unit and the up-conversion unit are used for converting direct current into an initial radio frequency single-tone signal;
the amplifying unit is used for amplifying the initial radio frequency single-tone signal to obtain a radio frequency single-tone signal;
the antenna is an electrically tunable rotating directional antenna or a beam steering antenna.
Optionally, the preset base station further comprises a main control module, wherein,
the main control module is used for controlling the transmitting module to generate a radio frequency single-tone signal;
the main control module is also used for controlling the antenna to perform rotation processing or beam scanning processing.
According to yet another aspect of the present application, there is also provided a computer readable medium having stored thereon computer readable instructions executable by a processor to implement a method as claimed in any one of the preceding claims.
According to yet another aspect of the present application, there is also provided an apparatus for passive terminal wireless communication, the apparatus comprising:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the method of any of the preceding claims.
Compared with the prior art, the method and the device have the advantages that the radio frequency single-tone signals are generated through the preset base station, and the radio frequency single-tone signals are transmitted to the corresponding terminals; transmitting the radio frequency single-tone signal to an electromagnetic conversion module in a terminal, converting the radio frequency single-tone signal into direct current through the electromagnetic conversion module, and storing the direct current in a preset capacitor; when the electric quantity of a preset capacitor is matched with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal; and acquiring a communication signal sent by the preset base station through the started terminal based on the specified communication protocol to complete data communication. In the application, the base station can emit electromagnetic waves with specific frequency, the remote control terminal is started in a state without power input and is communicated with the base station, and the terminal can be automatically shut down by stopping emitting the control terminal, so that the passivity of the terminal is realized; the method has extremely important roles in wireless monitoring and wireless remote sensing, in particular to areas or positions which are not easy to reach by personnel.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 illustrates a method flow diagram of passive terminal wireless communication provided in accordance with an aspect of the present application;
FIG. 2 illustrates a schematic diagram of a system architecture for passive terminal wireless communications according to another aspect of the present application;
fig. 3 is a schematic diagram of a frame structure of a preset base station transmitting module for wireless communication of a passive terminal according to an alternative embodiment of the present application;
fig. 4 is a schematic diagram of a system framework of wireless communication of a passive terminal in an alternative embodiment of the present application.
The same or similar reference numbers in the drawings refer to the same or similar parts.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
In one typical configuration of the present application, the terminal, the device of the service network, and the trusted party each include one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer readable media, as defined herein, does not include non-transitory computer readable media (transmission media), such as modulated data signals and carrier waves.
The base station can emit electromagnetic waves with specific frequency, the remote control terminal is started up in a power input-free state and is communicated with the base station, and the remote control terminal can be automatically shut down by stopping emitting. Thereby realizing the passivity of the terminal. The method has extremely important roles in wireless monitoring, wireless remote sensing and areas or positions which are not easy to be reached by personnel.
Fig. 1 shows a schematic flow chart of a method for wireless communication of a passive terminal according to an aspect of the present application, the method includes: S100-S400, wherein in S100, a radio frequency single-tone signal is generated through a preset base station, and the radio frequency single-tone signal is transmitted to a corresponding terminal; in S200, the radio frequency single-tone signal is transmitted to an electromagnetic conversion module in the terminal, the radio frequency single-tone signal is converted into direct current by the electromagnetic conversion module, and the direct current is stored in a preset capacitor; in S300, when the electric quantity of the preset capacitor matches with the power supply quantity of the wireless communication module, the preset capacitor is used to supply power to the terminal to start the terminal; in S400, based on the specified communication protocol, the terminal after starting obtains the communication signal sent by the preset base station, so as to complete data communication. The user can remotely control the terminal to be opened through the base station when needed to acquire data of the terminal side, or control the valve switch and the like through the terminal, the terminal can work without being independently provided with power input, and the passive terminal ensures that the whole communication process is safe and reliable and has extremely strong concealment.
Specifically, in S100, a radio frequency tone signal is generated by a preset base station, and the radio frequency tone signal is transmitted to a corresponding terminal. The alternating current which supplies power to the base station is converted into a radio frequency single sound signal through the preset base station, and the radio frequency single sound signal is transmitted into a terminal corresponding to the radio frequency single sound signal through the preset base station.
In S200, the radio frequency single-tone signal is transmitted to an electromagnetic conversion module in the terminal, the radio frequency single-tone signal is converted into direct current by the electromagnetic conversion module, and the direct current is stored in a preset capacitor. The radio frequency single-tone signal is transmitted to an electromagnetic conversion module in the terminal, and the electromagnetic conversion module can convert the received radio frequency single-tone signal into direct current and then store the converted direct current in a preset capacitor.
In S300, when the electric quantity of the preset capacitor matches with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal. When the electric quantity of the preset capacitor is matched with the power supply quantity of the wireless communication module, the stored direct current is directly supplied to the terminal by the preset capacitor, and the terminal is directly started. For example, the efficiency of the electromagnetic conversion circuit is 50%, the terminal and the base station are interacted for 1 second, about 20uW of power consumption is needed, and after 2 minutes, the capacity and the electric quantity can meet the power supply quantity of the terminal, and the terminal is started.
In S400, based on the specified communication protocol, the terminal after starting obtains the communication signal sent by the preset base station, so as to complete data communication. After the terminal is passively started, a communication signal sent by the preset base station is obtained based on a specified communication protocol set in the preset configuration and the base station, and the terminal sends a corresponding feedback communication signal based on the communication signal to complete data communication. The user can remotely control the terminal to be opened through the base station when needed to acquire data of the terminal side, or control the valve switch and the like through the terminal, the terminal can work without being independently provided with power input, and the passive terminal ensures that the whole communication process is safe and reliable and has extremely strong concealment.
In an optional embodiment of the present application, after acquiring, by the terminal, a communication signal sent by the preset base station based on a specified communication protocol, sending a feedback communication signal to the preset base station based on the communication signal, and analyzing, by the preset base station, the feedback communication signal to obtain an analysis result; and determining a transmission period for transmitting the radio frequency single-tone signal based on the analysis result. The appointed communication protocol is a communication protocol agreed by a terminal and a preset base station, and the terminal is switched into a communication mode based on the communication signal; and then, packaging information sent by the terminal into a feedback communication signal, sending the feedback communication signal to the preset base station, and restoring the feedback communication signal into the information sent by the terminal through the preset base station and analyzing the information to obtain an analysis result. A transmission period for transmitting the radio frequency tone signal is determined based on the analysis result. The feedback communication signal may include a power-related parameter of the terminal, the feedback communication signal is restored to the power-related parameter of the terminal through a preset base station, and a transmission period for transmitting the video single-tone signal is determined based on the power-related parameter.
In an optional embodiment of the present application, the feedback communication signal is obtained through the preset base station, and the feedback communication signal is subjected to specified reduction processing, so as to obtain a power related parameter of the terminal, where the power related parameter includes signal receiving power data and transmitting power data; and calculating the duration of single-time transmitting radio frequency single-tone signals based on the power related parameters. The feedback communication signal comprises power related parameters of the terminal, the power related parameters of the terminal are obtained through the preset base station through specified reduction processing, wherein the power related parameters comprise signal receiving power data and transmitting power data, and the duration of single-time radio frequency single-tone signal transmission of the preset base station is calculated based on the signal receiving power data and the transmitting power data of the terminal.
In an optional embodiment of the present application, the feedback communication signal is amplified to obtain an amplified feedback communication signal; and performing down-conversion processing and demodulation processing on the amplified feedback communication signal to obtain the power-related parameter. The received terminal signal is amplified, down-converted and demodulated by the preset base station and then restored to original data, so that the power related parameters are determined.
In an optional embodiment of the present application, in S100, a radio frequency tone signal of a corresponding frequency is configured based on each terminal; and generating radio frequency single-tone signals with a plurality of frequencies through the preset base station. The preset base station can use signals with different frequencies for different terminals, so that the base station can perform passive communication for different terminals at the same time. For example, for terminal a to use a fixed frequency signal a and terminal B to use another fixed frequency signal B, so that the base station can communicate with both terminal a and terminal B.
In an alternative embodiment of the present application, the preset base station and the terminal may agree on respective communication signal frequencies and time periods according to a wireless transmission protocol.
Fig. 2 is a schematic structural diagram of a system framework for wireless communication of a passive terminal according to another aspect of the present application, where the system includes a preset base station 100 and a terminal 200, where the preset base station 100 is configured to generate a radio frequency tone signal, and transmit the radio frequency tone signal to the corresponding terminal 200; the terminal 200 includes an electromagnetic conversion module 201, a preset capacitor 202, a wireless communication module 203, and a data interface 204, where the electromagnetic conversion module 201 is configured to obtain a radio frequency single tone signal sent by the base station 100, convert the radio frequency single tone signal into a direct current, and store the direct current in the preset capacitor 202; the preset capacitor 202 is configured to store the direct current obtained by the conversion of the electromagnetic conversion module 201; and powering the terminal 200 to start the terminal 200 when the electric quantity of the preset capacitor 202 is matched with the power supply quantity of the wireless communication module; the terminal 200 is further configured to acquire a communication signal sent by the preset base station 100 based on a specified communication protocol, so as to complete data communication.
Specifically, the preset base station 100 converts the alternating current power supplied to the base station into a radio frequency single tone signal, and the preset base station 100 transmits the radio frequency single tone signal to the terminal 200 corresponding to the radio frequency single tone signal. The radio frequency single-tone signal is transmitted to an electromagnetic conversion module 201 in the terminal 200, and the electromagnetic conversion module 201 can convert the received radio frequency single-tone signal into direct current, and then store the converted direct current in a preset capacitor 202. When the power of the preset capacitor 202 matches with the power of the wireless communication module 203, the preset capacitor 202 directly supplies the stored direct current to the terminal 200, and directly starts the terminal 200. For example, the efficiency of the electromagnetic conversion circuit is 50%, the terminal and the base station are interacted for 1 second, about 20uW of power consumption is needed, and after 2 minutes, the capacity and the electric quantity can meet the power supply quantity of the terminal, and the terminal is started. After the terminal 200 is passively started, a communication signal sent by the preset base station 100 is obtained based on a specified communication protocol with the base station set in the preset configuration, and the terminal 200 sends a corresponding feedback communication signal based on the communication signal to complete data communication. The user can remotely control the terminal to be opened through the base station when needed to acquire data of the terminal side, or control the valve switch and the like through the terminal, the terminal can work without being independently provided with power input, and the passive terminal ensures that the whole communication process is safe and reliable and has extremely strong concealment.
In an optional embodiment of the present application, the preset base station 100 is further configured to obtain a feedback communication signal sent by the terminal 200, analyze the feedback communication signal, and determine a power-related parameter of the terminal 200; and determining a transmission period for transmitting the radio frequency single-tone signal based on the power-related parameter. Here, the specified communication protocol is a communication protocol agreed by the terminal 200 and the preset base station 100, and based on the communication signal, the terminal 200 switches to a communication mode; then, the terminal 200 packages the information to be transmitted into a feedback communication signal, and transmits the feedback communication signal to the preset base station 100, and the preset base station 100 restores the feedback communication signal to the information transmitted by the terminal 200 and analyzes the feedback communication signal to obtain an analysis result, and then determines a transmission period of transmitting the radio frequency single-tone signal based on the analysis result. The feedback communication signal may include a power-related parameter of the terminal 200, and the feedback communication signal is restored to the power-related parameter of the terminal by the preset base station 100, and the transmission period of the video single-tone signal is determined based on the power-related parameter.
Fig. 3 shows a schematic diagram of a frame structure of a preset base station transmitting module for wireless communication of a passive terminal in an alternative embodiment of the present application, where the preset base station 100 further includes a transmitting module 101, where the transmitting module 101 includes a modulating unit 1011, an up-converting unit 1012, an amplifying unit 1013, and an antenna 1014, where the modulating unit 1011 and the up-converting unit 1012 are used to convert direct current into an initial radio frequency mono signal; the amplifying unit 1013 is configured to amplify the initial rf tone signal to obtain an rf tone signal; the antenna 1014 is an electrically tunable rotating directional antenna or a beam steering antenna. Here, the modulation unit 1011 may be a modulation circuit, the up-conversion unit 1012 may be an up-conversion circuit, and the modulation unit 1011 and the up-conversion unit 1012 are used to convert direct current into an initial radio frequency mono signal; the amplifying unit 1013 may be an amplifier, configured to amplify the initial rf tone signal to obtain an rf tone signal; the antenna 1014 is composed of more than one antenna, is responsible for receiving and transmitting radio frequency signals, and can be an electrically tunable rotating directional antenna or a beam control antenna.
In an optional embodiment of the present application, the preset base station 100 further includes a main control module 102, where the main control module 102 is configured to control the transmitting module 101 to generate a radio frequency single tone signal; the main control module 102 is further configured to control the antenna 1014 to perform a rotation process or a beam scanning process. Here, the main control module 102 controls the transmitting module 101 to generate an initial rf tone signal by the dc power through the modulating unit 1011 and the up-converting unit 1012, and to amplify the rf tone signal by the amplifying unit 1013. Then, the antenna 1014 transmits the radio frequency single tone signal, and when the antenna is rotatable or the beam is controllable, the main control module 102 controls the antenna to rotate or scan the beam, so that the terminal in the coverage area can receive the signal.
Fig. 4 shows a schematic architecture diagram of a system architecture of a passive terminal for wireless communication in an alternative embodiment of the present application, where the system includes a base station and a terminal. The base station comprises a main control module, a transmitting module, a receiving module, an antenna, a power supply circuit and a communication interface. The terminal comprises a wireless communication module, an electromagnetic conversion module, an antenna and a data interface.
Specifically, on the base station side, the main control module comprises a main control chip and a peripheral circuit, and is responsible for controlling the functions of receiving and transmitting signal processing of the base station, transmitting external data, controlling other parts of the base station in a switching mode and the like. The transmitting module consists of a modulating circuit, an up-converting circuit, an amplifying circuit and the like, and is responsible for modulating baseband signals and direct current into radio frequency signals to be transmitted by an antenna. The data signal, control signal, power signal may be distinguished from the terminal by frequency and/or time slots during modulation according to a proprietary protocol. The amplifying module can be configured by the main control module, and different gains are configured for different signals according to different frequencies and time slots. The receiving module is composed of a low noise amplifying circuit, a down-conversion circuit, a demodulation circuit and the like, and is responsible for amplifying, converting and demodulating signals received by the antenna. The antenna is composed of more than one antenna and is responsible for receiving and transmitting radio frequency signals. The antenna can be an electrically-tunable rotary directional antenna or a beam control antenna, and supports the rotation or the beam forming controlled by the main control part to aim the main lobe of the antenna at the terminal direction. The power supply circuit comprises an alternating current-to-direct current circuit, a direct current level conversion circuit, a wireless power supply direct current circuit and the like, and is responsible for supplying power to each part of the base station. The communication interface comprises at least one wired or wireless network interface, which is responsible for external data transmission, and is usually a wired network interface connected with the core network.
The wireless communication circuit at the terminal side comprises a main control chip and a transceiver radio frequency circuit, and is responsible for controlling the functions of the terminal, such as signal receiving and transmitting, external data transmission and the like. The electromagnetic conversion circuit consists of a matching circuit, a rectifying circuit and a capacitor, and is responsible for converting radio frequency signals from electromagnetic waves into direct current and transmitting the direct current to the wireless communication circuit. The antenna is composed of more than one antenna and is responsible for receiving and transmitting radio frequency signals. The data interface part comprises at least one wired or wireless data interface and is responsible for carrying out external data transmission. For example, a vibration sensor is connected via RS 485. The user can open the terminal through the base station remote control of the system when needed, acquire data of the terminal side, or control the valve switch and the like through the terminal, and the terminal can work without power input. The communication system of the invention is safe and reliable and has extremely strong concealment.
In the embodiment, the base station power port is connected with the matched power adapter and is electrified. After power-on, the power supply circuit supplies power for the base station main control, transmitting, receiving, communication interface and the like. The main control module controls the transmitting module, and the direct current is used for generating radio frequency single-tone signals through the modulating circuit and the up-converting circuit and is amplified by the amplifier. The frequency and power of the radio frequency single-tone signal can be adjusted by the main control part to control the transmitting part. For example: the base station transmits a single tone signal a at a frequency of 2450MHz with an average power of 43 dBmW.
In the above embodiment, the antenna transmits the single tone signal a, and if the antenna is rotatable or the beam is controllable, the main control portion controls the antenna to rotate or scan the beam, so that the terminal in the coverage area can receive the signal. The terminal antenna transmits the received signal a to the electromagnetic conversion circuit, and the received signal power is determined by the gains and the spatial attenuations of the base station antenna and the terminal antenna. For example, the terminal is about 1 km away from the base station, has a straight path, is available through an electromagnetic wave free space loss formula, has a transmission loss of about 100dB, and if the base station antenna gain is 18dB and the terminal antenna gain is 5dB at this time, the power of the signal a received by the terminal is about-34 dBmW.
Then, the signal a can be converted into direct current after passing through a matching circuit and a rectifying circuit in an electromagnetic conversion circuit, and the direct current is temporarily stored by a capacitor. For example, the efficiency of the electromagnetic conversion circuit is 50%, the terminal needs 1 second to interact with the base station once, and the power consumption is about 20uW, and the capacitance and the electricity can meet the requirement after about 2 minutes. And the base station calculates time according to the power consumption required by the operation of the terminal, and after the energy storage circuit of the terminal to be evaluated stores energy fully, the base station stops transmitting the single-tone signal a and accesses a communication mode. When the base station is started for the first time, the spatial transmission attenuation information of each terminal is not known, and the base station can transmit for a long time, for example, 30 minutes. After the terminal capacitance meets the power supply requirement of the wireless communication circuit, the terminal enters a receiving mode, receives the base station signal, and performs data communication according to a communication protocol agreed with the base station after receiving the communication signal of the base station.
Then, the terminal wireless communication module transmits the information such as the data acquired by the data interface, the power of the received signal a, the self transmitting power and the like to the base station; the base station receiving part amplifies, down-converts and demodulates the received terminal signal to restore to the original data. At this time, the base station stops receiving, and calculates the time required for transmitting the signal a next time according to the signal a received power reported by the terminal. Following the above embodiment, this time is at least 2 minutes and can be performed at 3 minutes. And the base station repeats the steps 3-11 according to the period of 3 minutes until the user stops communication through the configuration of the base station, and the terminal is closed or the base station is closed.
Alternatively, the base station may calculate a reasonable transmit signal a period based on the spatial transmission attenuation of each terminal.
Alternatively, the base station and the terminal may agree on respective communication signal frequencies and time periods according to a wireless transmission protocol, which may be different from the signal a transmission period.
Alternatively, the base station may use signals of different frequencies for different terminals, e.g., signal a for terminal a and signal B for another frequency, so that the base station may communicate with terminal a and terminal B simultaneously.
Embodiments of the present application also provide a computer readable medium having stored thereon computer readable instructions executable by a processor to implement a method of passive terminal wireless communication as described above.
Corresponding to the above-described method, the present application further provides a terminal, which includes modules or units capable of performing the steps of the method described in fig. 1 or fig. 2 or fig. 3 or fig. 4 or the respective embodiments, where the modules or units may be implemented by hardware, software or a combination of hardware and software, and the present application is not limited thereto. For example, in an embodiment of the present application, there is also provided an apparatus for passive terminal wireless communication, where the apparatus includes:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of one of the passive terminal wireless communication methods described above.
For example, computer-readable instructions, when executed, cause the one or more processors to:
generating a radio frequency single-tone signal through a preset base station, and transmitting the radio frequency single-tone signal to a corresponding terminal; transmitting the radio frequency single-tone signal to an electromagnetic conversion module in a terminal, converting the radio frequency single-tone signal into direct current through the electromagnetic conversion module, and storing the direct current in a preset capacitor; when the electric quantity of a preset capacitor is matched with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal; and acquiring a communication signal sent by the preset base station through the started terminal based on the specified communication protocol to complete data communication.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
It should be noted that the present application may be implemented in software and/or a combination of software and hardware, for example, using Application Specific Integrated Circuits (ASIC), a general purpose computer or any other similar hardware device. In one embodiment, the software programs of the present application may be executed by a processor to implement the steps or functions as described above. Likewise, the software programs of the present application (including associated data structures) may be stored on a computer readable recording medium, such as RAM memory, magnetic or optical drive or diskette and the like. In addition, some steps or functions of the present application may be implemented in hardware, for example, as circuitry that cooperates with the processor to perform various steps or functions.
Furthermore, portions of the present application may be implemented as a computer program product, such as computer program instructions, which when executed by a computer, may invoke or provide methods and/or techniques in accordance with the present application by way of operation of the computer. Program instructions for invoking the methods of the present application may be stored in fixed or removable recording media and/or transmitted via a data stream in a broadcast or other signal bearing medium and/or stored within a working memory of a computer device operating according to the program instructions. An embodiment according to the present application comprises an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the apparatus to operate a method and/or a solution according to the embodiments of the present application as described above.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units or means recited in the apparatus claims can also be implemented by means of one unit or means in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.
Claims (10)
1. A method of passive terminal wireless communication, the method comprising:
generating radio frequency single-tone signals through a preset base station, configuring radio frequency single-tone signals with corresponding frequencies based on each terminal, and generating radio frequency single-tone signals with a plurality of frequencies through an electrically-modulated rotary directional antenna or a beam control antenna in the preset base station;
according to the transmission attenuation of the space of each terminal, calculating the period of each radio frequency single sound signal, and transmitting the radio frequency single sound signal to the corresponding terminal according to the corresponding period;
transmitting the radio frequency single-tone signal to an electromagnetic conversion module in a terminal, converting the radio frequency single-tone signal into direct current through the electromagnetic conversion module, and storing the direct current in a preset capacitor;
when the electric quantity of the preset capacitor is matched with the power supply quantity of the wireless communication module, the preset capacitor is used for supplying power to the terminal to start the terminal;
and acquiring a communication signal sent by the preset base station through the started terminal based on the specified communication protocol to complete data communication.
2. The method according to claim 1, wherein after the communication signal sent by the preset base station is acquired by the terminal based on the specified communication protocol, further comprising:
transmitting a feedback communication signal to the preset base station based on the communication signal, and analyzing the feedback communication signal through the preset base station to obtain an analysis result;
and determining a transmission period for transmitting the radio frequency single-tone signal based on the analysis result.
3. The method according to claim 2, wherein analyzing the feedback communication signal by the preset base station to obtain an analysis result comprises:
acquiring the feedback communication signal through the preset base station, and carrying out specified reduction processing on the feedback communication signal to obtain power related parameters of the terminal, wherein the power related parameters comprise signal receiving power data and transmitting power data;
and calculating the duration of single-time transmitting radio frequency single-tone signals based on the power related parameters.
4. A method according to claim 3, wherein performing a specified reduction process on the feedback communication signal to obtain a power-related parameter of the terminal comprises:
amplifying the feedback communication signal to obtain an amplified feedback communication signal;
and performing down-conversion processing and demodulation processing on the amplified feedback communication signal to obtain the power-related parameter.
5. A system for passive terminal wireless communication, characterized in that the system comprises a pre-set base station and a terminal, wherein,
the preset base station comprises an antenna for generating radio frequency single-tone signals, wherein the antenna is an electrically-tunable rotary directional antenna or a beam control antenna;
the preset base station is used for configuring radio frequency single-tone signals with corresponding frequencies based on each terminal, generating radio frequency single-tone signals with a plurality of frequencies through the preset base station, calculating the period of each radio frequency single-tone signal according to the transmission attenuation of the space of each terminal, and transmitting the radio frequency single-tone signals to the corresponding terminals according to the corresponding periods;
the terminal comprises an electromagnetic conversion module, a preset capacitor, a wireless communication module and a data interface, wherein the electromagnetic conversion module is used for acquiring a radio frequency single-tone signal sent by the base station, converting the radio frequency single-tone signal into direct current and storing the direct current in the preset capacitor;
the preset capacitor is used for storing direct current obtained by conversion of the electromagnetic conversion module; when the electric quantity of the preset capacitor is matched with the power supply quantity of the wireless communication module, the terminal is powered to be started;
the terminal is also used for acquiring a communication signal sent by the preset base station based on a specified communication protocol to complete data communication.
6. The system of claim 5, wherein the preset base station is further configured to acquire a feedback communication signal sent by the terminal, analyze the feedback communication signal, and determine a power-related parameter of the terminal;
and determining a transmission period for transmitting the radio frequency single-tone signal based on the power-related parameter.
7. The system of claim 5, wherein the predetermined base station further comprises a transmitting module, wherein,
the transmitting module comprises a modulating unit, an up-conversion unit, an amplifying unit and an antenna, wherein the modulating unit and the up-conversion unit are used for converting direct current into an initial radio frequency single-tone signal;
the amplifying unit is used for amplifying the initial radio frequency single-tone signal to obtain a radio frequency single-tone signal;
the antenna is an electrically tunable rotating directional antenna or a beam steering antenna.
8. The system of claim 7, wherein the predetermined base station further comprises a master control module, wherein,
the main control module is used for controlling the transmitting module to generate a radio frequency single-tone signal;
the main control module is also used for controlling the antenna to perform rotation processing or beam scanning processing.
9. A computer readable medium having stored thereon computer readable instructions executable by a processor to implement the method of any of claims 1 to 4.
10. An apparatus for passive terminal wireless communication, wherein the apparatus comprises:
one or more processors; and
a memory storing computer readable instructions that, when executed, cause the processor to perform the operations of the method of any one of claims 1 to 4.
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