CN116318268A - Time domain carrier communication method - Google Patents
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- CN116318268A CN116318268A CN202211710272.1A CN202211710272A CN116318268A CN 116318268 A CN116318268 A CN 116318268A CN 202211710272 A CN202211710272 A CN 202211710272A CN 116318268 A CN116318268 A CN 116318268A
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- 238000004891 communication Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 11
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- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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- 230000000977 initiatory effect Effects 0.000 description 1
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- H04B5/79—
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- H04B5/26—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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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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- General Engineering & Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention relates to a time domain carrier communication method, which is applied to a wireless charging system, wherein the system comprises a transmitting end and a receiving end which are respectively provided with a wireless communication module and a coil, and the method comprises the following steps: the transmitting terminal activates a transmitting terminal wireless communication module and generates a transmitting terminal wireless communication address; the transmitting end transmits the wireless communication address to the receiving end in a carrier mode; after the receiving end coil captures the carrier voltage, processing the received carrier signal and broadcasting the processed data; after the transmitting end wireless communication module scans the broadcast data, the broadcast data content is compared with the wireless communication address, and if the broadcast data is consistent with the transmitting end wireless communication address, the transmitting end initiates the connection action of the wireless communication module to the receiving end. Compared with the prior art, the method and the device can ensure the connection uniqueness of the wireless communication module, and solve the problems of wireless charging and the like caused by data transmission errors due to wrong connection.
Description
Technical Field
The invention relates to the technical field of carrier communication, in particular to a time domain carrier communication method.
Background
The general trend of electronic products suggests that wireless charging is widely adopted in consumer electronic devices, which is determined by the many conveniences of wireless charging systems. With the increasing market demand, there is an increasing demand for developing breakthrough charging technologies such as wireless charging. At present, wireless charging technology has tended to develop and mature, and research and development requirements on details of a wireless charging system are becoming more and more sophisticated, so as to obtain a wireless power transmission system with advantages of more stability, longer transmission distance, higher transmission efficiency and the like.
For rechargeable power storage equipment and products requiring functions such as identity recognition and information transmission, wired charging of the rechargeable power storage equipment and products usually has a communication protocol formulated according to national standards, and after an adapter is manually connected to a power supply and connected to equipment to be charged, information is directly connected and transmitted through a circuit, so that the rechargeable power storage equipment and the adapter are used for recognizing whether the equipment to be charged is matched with the adapter, detecting the connection state, whether charging is completed or not and the like. For a wireless charging system, a transmitting end and a receiving end are coupled with wireless transmission energy through a magnetic field, and wireless connection is performed between the transmitting end and the receiving end, so that the problems of a charging communication protocol in the aspects of information transmission, identity recognition and the like may not be realized. In the wireless charging system, state confirmation, mutual identification, communication, and the like between the transmitting and receiving ends may not be achieved without technical support such as near field communication. Meanwhile, in the wireless charging practical application scenario, the number of the transmitting end and the receiving end is not fixed, that is, a plurality of transmitting ends and receiving ends may exist, near field communication devices such as wireless communication modules exist in each transmitting end and each receiving end respectively, and error connection may occur between the plurality of wireless communication module devices, so that data transmission errors are caused, and the problems such as incapability of charging are caused.
Disclosure of Invention
The present invention is directed to a method for time-domain carrier communication, which overcomes the above-mentioned drawbacks of the prior art.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a time domain carrier communication method, the communication method is applied to wireless charging system, wireless charging system includes transmitting terminal and receiving terminal, transmitting terminal and receiving terminal are equipped with wireless communication module and transmitting terminal coil and receiving terminal coil that cooperate respectively, the step of communication method includes:
the transmitting terminal activates a transmitting terminal wireless communication module and generates a transmitting terminal wireless communication address, wherein the wireless communication address comprises a starting signal and a data signal;
the transmitting end transmits the wireless communication address to the receiving end coil in the form of a carrier wave in a coupling mode through the transmitting end coil;
after the receiving end coil captures the carrier voltage, activating a receiving end wireless communication module, processing the received carrier signal, and broadcasting the processed data;
after the transmitting terminal wireless communication module scans the broadcast data, the content of the broadcast data is compared with the generated transmitting terminal wireless communication address, if the broadcast data is consistent with the transmitting terminal wireless communication address, the transmitting terminal initiates the connection action of the wireless communication module to the receiving terminal until the connection is completed, and data communication is started.
Further, the carrier wave is a square wave at a set frequency.
Further, the wireless communication address includes a start signal and a data signal.
Further, in the carrier signal:
the start signal includes a set frequency duration t s The sum of square waves of (a) is the duration t s The' low level start signal turns off the waveform;
the signal representing 0 in the data signal comprises a constant frequency of duration t 0 Square wave and duration t 0 A' closing waveform;
the signal representing 1 in the data signal comprises a constant frequency of duration t 1 Square wave and duration t 1 ' off waveform.
Further, what is said isThe duration of the off waveform of the start signal, the signal representing 0 in the data signal and the signal representing 1 in the data signal is the same, i.e. t s ’＝t 0 ’＝t 1 ’。
Further, the off waveforms of the start signal, the signal of 0 in the data and the signal of 1 in the data are continuously low level.
Further, the frequency of the carrier wave is generated by the transmitting end coil.
Further, the transmitting end executes the following steps when executing the communication method:
the transmitting end performs the system initialization,
judging whether the wireless communication module is connected or not, and ending the flow if the wireless communication module is connected;
if not, the wireless communication address is sent to the receiving end through a transmitting end coil in a carrier mode;
the transmitting end wireless communication module scans and receives broadcast data;
judging whether the broadcast data is consistent with the sent carrier data, if not, continuing scanning until the target broadcast data is scanned;
if the connection is consistent, the transmitting end wireless communication module and the receiving end wireless communication module are connected, and the step of judging whether the wireless communication modules are connected is returned.
Further, the receiving end performs the following steps when executing the communication method:
the receiving end initializes the system;
the receiving end captures signals and judges whether signals are captured or not;
if the receiving end captures a signal, starting a timer for data processing;
if the signal is not captured, then after the timer is finished, receiving a starting signal;
after receiving the initial signal, continuing to receive the data signal, thereby completing the reception of one frame of data;
judging whether the obtained continuous two frames of data are consistent;
after the same data of two continuous frames is obtained, the data is packed into broadcast data, and the broadcast is carried out outwards until the wireless communication module of the transmitting end is connected after the scanning confirmation is completed.
Further, the receiving end repeats the process of capturing the signal in the time which is not reached by the timer until the timer times to receive the starting signal, and if the starting signal is not received, the receiving end repeats capturing;
repeating the signal capturing process if the reception of the data signal is not completed after the start signal is received;
if the received second frame data is different from the first frame data after the completion of the reception of one frame data, the signal capturing process is continuously repeated until the completion of the reception of two continuous frames of the same signal.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the time domain carrier communication method provided by the invention, the wireless communication address is transmitted to the receiving end through the coil of the transmitting end in a carrier mode, the receiving end captures carrier data and packages the data into broadcast data broadcast, the transmitting end scans the broadcast data, the wireless communication module is connected after the transmitting end compares and confirms the wireless communication address with the wireless communication address of the transmitting end, and then data communication is started. The method can be applied to the scenes of multiple transmitting ends and/or multiple receiving ends, can ensure the connection uniqueness of the wireless communication module, and solves the problems of wireless charging and the like caused by data transmission errors due to incorrect connection.
2) According to the time domain carrier communication method provided by the invention, the frequency required by the carrier is generated by the transmitting end resonant coil of the wireless charging system, and no coil is required to be additionally added.
Drawings
Fig. 1 is a method flow chart of a time domain carrier communication method of the present invention;
fig. 2 is a schematic structural diagram of a wireless charging system to which a time-domain carrier communication method of the present invention is applied;
fig. 3 is a schematic diagram of carrier signals in a time domain carrier communication method according to the present invention;
fig. 4 is a flowchart of a transmitting end of a time domain carrier communication method provided by the present invention;
fig. 5 is a flowchart of a receiving end of a time domain carrier communication method provided by the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Example 1
As one embodiment of the present invention, a time-domain carrier communication method is provided, where the communication method is applied to a wireless charging system, and the wireless charging system includes a transmitting end and a receiving end that are respectively provided with a wireless communication module and a coil, where the wireless communication module may use one of bluetooth, RF, wifi, cellular data, and other wireless communication.
As shown in fig. 1, the steps of the method for time domain carrier communication include:
s1, a transmitting end activates a transmitting end wireless communication module and generates a transmitting end wireless communication address, wherein the wireless communication address comprises a starting signal and a data signal;
s2, the transmitting end transmits the wireless communication address to the receiving end coil in the form of a carrier wave in a coupling mode through the transmitting end coil;
s3, after the receiving end coil captures the carrier voltage, activating the receiving end wireless communication module, processing the received carrier signal and broadcasting the processed data;
and S4, after the transmitting terminal wireless communication module scans the broadcast data, comparing the broadcast data content with the generated transmitting terminal wireless communication address, and if the broadcast data is consistent with the transmitting terminal wireless communication address, initiating a wireless communication module connection action to the receiving terminal by the transmitting terminal until the connection is completed, and starting data communication.
Example 2:
as one implementation manner of the present invention, the wireless communication module in this embodiment adopts a bluetooth module, and fig. 2 is a schematic diagram of a time domain carrier communication method in this embodiment. As shown in the figure, in the wireless charging system, bluetooth is used as a near field communication technology between a transmitting end and a receiving end. The transmitting end and the receiving end can comprise a power supply, an AC-DC rectifying circuit, a DC-DC voltage reducing circuit, a DC-AC inverter circuit, a transmitting end coil, a receiving end coil, an MCU, a load, a weak point power supply circuit and a Bluetooth communication circuit.
The coil used for mutual coupling transmission of electric energy in the wireless charging system is mainly used for generating required frequency, the duty ratio is 50%, and different pulse numbers are generated by utilizing the frequency to perform data identification, so that no additional coil is required. The square wave with the duty ratio of 50% and the low level of 0 form a unit, the transmitting end MCU controls which unit and the number of the units are formed, and the receiving end MCU is used for capturing carrier signals and processing data. The power circuit part of the transmitting end inverter circuit outputs a lower voltage for activating the Bluetooth of the transmitting end, and the MCU controls the generation of the MAC address. The transmitting end coil then transmits the voltage to the receiving end coil by way of coupling, the receiving end captures the voltage, activates the receiving end bluetooth, processes the received carrier signal, and then broadcasts the data. After the transmitting end scans the broadcast data content, the broadcast data content is compared with the Bluetooth MAC address of the transmitting end, if the data obtained by the carrier wave is consistent with the Bluetooth MAC address of the transmitting end, the transmitting end initiates Bluetooth connection action to the receiving end until the connection is completed, and data communication is started.
Fig. 3 is a signal diagram of a time domain carrier communication method. As shown, the start signal (start) is a square wave with a duty cycle of 50% for a duration t to generate the desired frequency s The waveform (low level) is turned off for t s 'A'; data "0" is a square wave with a duty cycle of 50% for a duration t to produce the desired frequency 0 The waveform (low level) is turned off for t 0 'A'; data "1" is a square wave with a duty cycle of 50% for a duration t to produce the desired frequency 1 The waveform (low level) is turned off for t 1 '. Wherein the desired frequency can be 85kHz frequency generated by the coil (the frequency can be changed according to the requirement)，t s 、t s ’、t 0 、t 0 ’、t 1 、t 1 ' may be 800us, 1000us, 400us, 1000us, 1200us, 1000us, respectively. When t s 、t s ’、t 0 、t 0 ’、t 1 、t 1 ' 800us, 1000us, 400us, 1000us, 1200us, 1000us, respectively, the time to complete one data transfer is 19.4ms (longest time).
Fig. 4 is a flow chart of a transmitting end of a time domain carrier communication method. After the initialization of the system is completed, the Bluetooth is in an unconnected state, and the Bluetooth MAC address (initial signal (1 bit) +data (6 bytes, namely 48 bits)) is sent to the receiving end by the transmitting end through a carrier wave mode. Meanwhile, the Bluetooth of the transmitting end scans the received broadcast data, confirms whether the broadcast data is consistent with the sent carrier data, if so, establishes connection with the Bluetooth of the receiving end, otherwise, continues scanning until the target broadcast data is scanned, and further establishes Bluetooth connection.
Fig. 5 is a flow chart of a receiving end of a time domain carrier communication method. The receiving end starts to capture signals (50% square wave) after the system initialization is completed, and a 20kHz timer is started for data processing after the signals are captured. When the signal is a low-level square wave with the signal of 0, the square wave signal is not captured, then the start signal starts to be received after the timer is up, the 48-bit data signal continues to be received after the start signal is received, so that the reception of one frame of data is completed, after two continuous frames of same data are obtained, the data are packed into broadcasting data, the broadcasting is carried out outwards, and the Bluetooth connection is carried out until the Bluetooth scanning confirmation of the transmitting end is completed. As shown in the figure, the receiving end will repeat the process of capturing the signal in the time that the timer does not arrive, until the timer times to receive the start signal, and if the received start signal is not received, the capturing is repeated. And repeating the signal capturing process if the receiving of the 48-bit data signal is not completed after the start signal is received. If the received second frame data is different from the first frame data after the completion of the reception of one frame data, the signal capturing process is continuously repeated until the completion of the reception of two continuous frames of the same signal, so that the packaging, broadcasting, transmitting end Bluetooth scanning confirmation and subsequent Bluetooth connection are performed.
In summary, the present embodiment provides a time-domain carrier communication method applicable to wireless charging of devices, which mainly generates a required frequency by a coil, a duty ratio of 50%, and generates different pulse numbers by using the frequency to perform data identification. The Bluetooth MAC address is transmitted to the receiving end through the transmitting end coil in a carrier mode, after the receiving end captures carrier data, the data are packed into broadcast data broadcast, the transmitting end scans the broadcast data, bluetooth connection is completed after the transmitting end scans the broadcast data and compares and confirms with the MAC of the transmitting end, and then data communication is started. The method can be applied to the scenes of multiple transmitting ends and/or multiple receiving ends, can ensure the uniqueness of Bluetooth connection, and solves the problems of wireless charging and the like caused by data transmission errors due to the occurrence of erroneous connection.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a time domain carrier communication method which characterized in that, the communication method is applied to wireless charging system, wireless charging system includes transmitting terminal and receiving terminal, transmitting terminal and receiving terminal are equipped with wireless communication module and transmitting terminal coil and receiving terminal coil that cooperate respectively, the step of communication method includes:
the transmitting terminal activates a transmitting terminal wireless communication module and generates a transmitting terminal wireless communication address, wherein the wireless communication address comprises a starting signal and a data signal;
the transmitting end transmits the wireless communication address to the receiving end coil in the form of a carrier wave in a coupling mode through the transmitting end coil;
after the receiving end coil captures the carrier voltage, activating a receiving end wireless communication module, processing the received carrier signal, and broadcasting the processed data;
after the transmitting terminal wireless communication module scans the broadcast data, the content of the broadcast data is compared with the generated transmitting terminal wireless communication address, if the broadcast data is consistent with the transmitting terminal wireless communication address, the transmitting terminal initiates the connection action of the wireless communication module to the receiving terminal until the connection is completed, and data communication is started.
2. A time domain carrier communication method according to claim 1, wherein the carrier is a square wave at a set frequency.
3. The method of claim 1, wherein the wireless communication address comprises a start signal and a data signal.
4. A time domain carrier communication method according to claim 3, characterized in that in the carrier signal:
the start signal includes a set frequency duration t s The sum of square waves of (a) is the duration t s The' low level start signal turns off the waveform;
the signal representing 0 in the data signal comprises a constant frequency of duration t 0 Square wave and duration t 0 A' closing waveform;
the signal representing 1 in the data signal comprises a constant frequency of duration t 1 Square wave and duration t 1 ' off waveform.
5. The method of claim 4, wherein the start signal, the signal representing 0 in the data signal and the signal representing 1 in the data signal have the same duration of the off waveform, i.e., t s ’＝t 0 ’＝t 1 ’。
6. The method of claim 4, wherein the off waveforms of the start signal, the signal of 0 in data, and the signal of 1 in data are continuously low.
7. A time domain carrier communication method according to claim 1, characterized in that the frequency of the carrier is generated by a transmitting end coil.
8. The method according to claim 1, wherein the transmitting end performs the following steps when performing the method:
the transmitting end performs the system initialization,
judging whether the wireless communication module is connected or not, and ending the flow if the wireless communication module is connected;
if not, the wireless communication address is sent to the receiving end through a transmitting end coil in a carrier mode;
the transmitting end wireless communication module scans and receives broadcast data;
judging whether the broadcast data is consistent with the sent carrier data, if not, continuing scanning until the target broadcast data is scanned;
if the connection is consistent, the transmitting end wireless communication module and the receiving end wireless communication module are connected, and the step of judging whether the wireless communication modules are connected is returned.
9. The method according to claim 1, wherein the receiving end performs the following steps when performing the method:
the receiving end initializes the system;
the receiving end captures signals and judges whether signals are captured or not;
if the receiving end captures a signal, starting a timer for data processing;
if the signal is not captured, then after the timer is finished, receiving a starting signal;
after receiving the initial signal, continuing to receive the data signal, thereby completing the reception of one frame of data;
judging whether the obtained continuous two frames of data are consistent;
after the same data of two continuous frames is obtained, the data is packed into broadcast data, and the broadcast is carried out outwards until the wireless communication module of the transmitting end is connected after the scanning confirmation is completed.
10. A method of time domain carrier communication as defined in claim 9, wherein,
the receiving end repeatedly captures the signal in the time which is not reached by the timer until the timer reaches the time of receiving the initial signal, and repeatedly capturing if the initial signal is not received;
repeating the signal capturing process if the reception of the data signal is not completed after the start signal is received;
if the received second frame data is different from the first frame data after the completion of the reception of one frame data, the signal capturing process is continuously repeated until the completion of the reception of two continuous frames of the same signal.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3158622A1 (en) * | 2014-06-20 | 2017-04-26 | LG Electronics Inc. | Wireless power transfer method, apparatus and system |
| CN207939753U (en) * | 2018-03-23 | 2018-10-02 | 重庆唐古拉科技有限公司 | A kind of transmitting terminal under wireless charging scene and receiving terminal pair system |
| CN111586581A (en) * | 2020-04-30 | 2020-08-25 | 深圳赫兹创新技术有限公司 | Automatic matching method and device between wireless charging devices and storage medium |
| CN112600782A (en) * | 2020-11-23 | 2021-04-02 | 厦门新页微电子技术有限公司 | Wireless charging system, communication method thereof and storage medium |
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- 2022-12-29 CN CN202211710272.1A patent/CN116318268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3158622A1 (en) * | 2014-06-20 | 2017-04-26 | LG Electronics Inc. | Wireless power transfer method, apparatus and system |
| CN207939753U (en) * | 2018-03-23 | 2018-10-02 | 重庆唐古拉科技有限公司 | A kind of transmitting terminal under wireless charging scene and receiving terminal pair system |
| CN111586581A (en) * | 2020-04-30 | 2020-08-25 | 深圳赫兹创新技术有限公司 | Automatic matching method and device between wireless charging devices and storage medium |
| CN112600782A (en) * | 2020-11-23 | 2021-04-02 | 厦门新页微电子技术有限公司 | Wireless charging system, communication method thereof and storage medium |
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