CN105811596B - Pairing method of electric energy wireless transmission system and power supply equipment - Google Patents
Pairing method of electric energy wireless transmission system and power supply equipment Download PDFInfo
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Abstract
A pairing method of a wireless electric energy transmission system and a power supply device are provided, the method is used for the power supply device and comprises the following steps: after the power supply authority of the load equipment is obtained, voltage which is only used for starting a communication function of the load equipment is transmitted to the load equipment; switching the communication state of the equipment into a receiving state before the pre-stored communication function starting completion time of the load equipment reaches or reaches, and preparing to monitor pairing information fed back by the load equipment; and after receiving the pairing message, establishing a pairing relation with the load equipment. The pairing is completed without manual operation of a user or a worker, so that automatic pairing operation is realized, an operation program is simplified, and user experience is improved; in addition, the starting completion time of the communication function of the load equipment is preset, the communication state is adjusted, and the problem that the power supply equipment cannot receive the pairing message because the load equipment and the power supply equipment are in the same communication state at the same time is solved.
Description
Technical Field
The invention relates to the technical field of wireless electric energy transmission, in particular to a pairing method of a wireless electric energy transmission system and power supply equipment.
Background
The wireless power supply/charging technology is that the electric energy is transmitted wirelessly through the coupling coil, and the electric energy transmission method does not need a wire/cable, so that compared with the traditional power supply method adopting the wire/cable, a complex circuit is avoided, the occupied space of the equipment is reduced, and the user can place and use the equipment more conveniently.
The existing equipment needs to be paired between power supply equipment and load equipment before use, the pairing operation needs to be manually completed by a user or a worker, the power supply equipment/load equipment enters a pairing mode through key operation, another equipment searches the equipment in a communication network, operates and accesses the equipment to complete pairing, the identifier of the load equipment and the required power supply voltage are sent to the power supply equipment, and after the series of operations are completed, the user can send the stored power supply voltage required by the load equipment to the load changing equipment through the power supply equipment. In addition, there is also a set of power supply equipment and load equipment in which pairing operation is completed by a manufacturer at the time of shipment of the equipment.
According to the method, the pairing program needs to be manually configured by a user or a worker, the operation is complicated, and the user experience is not good.
Disclosure of Invention
One of the objectives of the present invention is to provide a pairing method for a wireless power transmission system, so as to solve the problem of complex pairing operation in the prior art.
In some demonstrative embodiments, the pairing method of the wireless power transmission system for a power supply device includes: after the power supply authority of the load equipment is obtained, voltage which is only used for starting a communication function of the load equipment is transmitted to the load equipment; switching the communication state of the equipment into a receiving state before the pre-stored communication function starting completion time of the load equipment reaches or reaches, and preparing to monitor pairing information fed back by the load equipment; and after receiving the pairing message, establishing a pairing relation with the load equipment.
Another object of the present invention is to provide a power supply apparatus.
In some demonstrative embodiments, the power supply device includes: the electric energy transmission module is used for transmitting voltage only used for starting the communication function of the load equipment to the load equipment after obtaining the power supply authority of the load equipment; the switching module is used for switching the communication state of the equipment into a receiving state and preparing to monitor the pairing message fed back by the load equipment before the pre-stored communication function starting completion time of the load equipment reaches or reaches; and the first receiving module is used for establishing a pairing relation with the load equipment after the pairing message is received.
Illustrative embodiments of the invention include the following advantages over the prior art:
the pairing is completed without manual operation of a user or a worker, so that automatic pairing operation is realized, an operation program is simplified, and user experience is improved; in addition, the starting completion time of the communication function of the load equipment is preset, the communication state is adjusted, and the problem that the power supply equipment cannot receive the pairing message because the load equipment and the power supply equipment are in the same communication state at the same time is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart in accordance with an illustrative embodiment of the present invention;
FIG. 2 is a block diagram of a power supply apparatus in accordance with an illustrative embodiment of the present invention;
FIG. 3 is a flow chart in accordance with an illustrative embodiment of the present invention;
fig. 4 is a flow chart in accordance with an illustrative embodiment of the present invention.
Detailed Description
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.
To facilitate a faster understanding of the illustrative embodiments of the invention, the main idea of the invention is first briefly described here.
At present, most equipment is miniaturized, and the occupied space of the equipment is reduced, so that the structure of the equipment is simplified. For wireless power transmission equipment, in order to reduce the occupied space of the equipment, the wireless power transmission equipment is only provided with one communication module to communicate with other equipment, so that the communication function is ensured, and the reduced occupied space is also reduced.
In order to solve the problems that manual pairing operation is adopted between wireless electric energy transmission devices (namely power supply devices and load devices), operation is complex and complex, self-pairing between the devices needs to be achieved, but communication operation which needs to be executed by each device is many, and it cannot be guaranteed that when the load devices send pairing messages, the power supply devices are just in a receiving state at the moment, so that the pairing messages cannot be sent or received, and pairing failure is caused. Therefore, the invention determines the starting completion time of the communication function of the load equipment and stores the starting completion time in the power supply equipment, the power supply equipment switches the communication state of the power supply equipment into the receiving state when the time is reached or before the time is reached, and after the load equipment sends the pairing message, the normal receiving of the pairing message is ensured, and the automatic pairing operation is completed.
Based on the above-described main idea of the present invention, illustrative embodiments of the present invention are discussed below.
As shown in fig. 1, a pairing method of a wireless power transmission system is disclosed, which is used for a power supply device, and includes:
s11, after obtaining the power supply authority of the load equipment, transmitting voltage only used for starting the communication function of the load equipment to the load equipment;
s12, switching the communication state of the equipment into a receiving state before the pre-stored communication function starting completion time of the load equipment is reached or reached, and preparing to monitor the pairing message fed back by the load equipment;
the starting completion time of the communication function of the load equipment can be determined by testing the load equipment, and the time is stored in the power supply equipment; the communication function of the load equipment can be determined by adopting some detection circuits, for example, a light emitting diode for indicating the conduction of the communication module is arranged on the load equipment, and a light sensing detection device is arranged on the power supply equipment. It should be understood by those skilled in the art that the detection of the determination time may be performed by additionally providing other means besides the above-described manner of determining the start completion time of the communication function of the load device.
And S13, after receiving the pairing message, establishing a pairing relation with the load equipment.
The pairing is completed without manual operation of a user or a worker, so that automatic pairing operation is realized, an operation program is simplified, and user experience is improved; in addition, the starting completion time of the communication function of the load equipment is preset, the communication state is adjusted, and the problem that the power supply equipment cannot receive the pairing message because the load equipment and the power supply equipment are in the same communication state at the same time is solved.
In some illustrative embodiments, the switching the communication state of the device to the receiving state before the pre-stored communication function start completion time of the load device is reached or reached specifically includes:
after the voltage is supplied to the load device, starting timing;
and if the timing number reaches the starting completion time or is within a certain time range from the starting completion time, switching the communication state of the equipment to the receiving state.
In some illustrative embodiments, after obtaining the power supply authority of the load device, before supplying the voltage for only starting the communication function of the load device to the load device, the method further includes:
broadcasting a preemption message for preempting the power supply authority of the load equipment, and intercepting the preemption message broadcast by other power supply equipment; wherein, the preemption message contains the preemption priority of the power supply equipment broadcasting the preemption message;
and if the preemption priority of the equipment is always at the highest level in a period of time, determining that the equipment obtains the preemption permission.
In addition, if the preemption priority of other power supply equipment is higher than the preemption priority of the power supply equipment, stopping continuously preempting and stopping broadcasting the preemption message.
The power supply equipment broadcasts the preemption message at random time intervals, the communication state of the equipment is the sending state during the broadcasting, the communication state of the equipment is the receiving state in a time period except the sending state, and the time period of the receiving state comprises: the time period for receiving the preemption message of other power supply equipment also comprises the time period for the load equipment to send the pairing information.
The power supply equipment is prevented from simultaneously sending the preemption message, so that the power supply equipment cannot receive the preemption message of other power supply equipment; so that automatic discrimination of preemption priority cannot be realized.
In some illustrative embodiments, the preemption priority of the preemption message is that the power supply equipment starts to count time with a random number after detecting the load equipment, and counts time at the moment of broadcasting the preemption message;
and determining the level of the preemption priority according to the size relation of the counting time of the equipment and other power supply equipment at the same time.
Wherein, the timing is started by the random number, the timing can be started from zero to the random number, or the timing can be started from random number to zero; positive timing is for example: the power supply equipment A, the power supply equipment B and the power supply equipment C detect load equipment at the same time, the random number of the power supply equipment A is 120s, the random number of the power supply equipment B is 112s, and the random number of the power supply equipment C is 123 s; starting timing at the same time, broadcasting a preemption message by the power supply equipment A at 10s, wherein the counting time in the preemption message is 120s-10s, the power supply equipment B and the power supply equipment C receive the preemption message, the power supply equipment B and the power supply equipment C respectively perform preemption priority comparison with the power supply equipment A, at the moment, the counting time of the power supply equipment B is 112s-10s, the counting time of the power supply equipment C is 123s-10s, if the counting time is smaller and higher, the counting time of the power supply equipment B is smaller than that of the power supply equipment A, the judgment result of the power supply equipment B is higher than that of the power supply equipment A, the counting time of the power supply equipment C is larger than that of the power supply equipment A, and the judgment result of the power supply equipment C is lower than that of the power; the power supply equipment C is eliminated by itself and stops seizing; and the power supply equipment B sends a preemption message at the 15 th s, the power supply equipment A receives and judges the preemption message by itself, determines that the power supply equipment B is lower in level, eliminates the preemption message by itself and stops preemption. After 50s, the power supply equipment B does not detect that the preemption priority of other power supply equipment is higher than that of the power supply equipment B, and determines to acquire the preemption authority of the load equipment. It should be understood by those skilled in the art that a plurality of different rules for different timing manners and determination bases may be set, and other determination manners are not described in detail in view of the above illustrative embodiments.
In some illustrative embodiments, the random number has built therein a communication function start completion time of the load device; and if the preemption priority of the equipment is always in the highest level when the timing number reaches the first moment, determining that the equipment obtains the preemption permission.
In some illustrative embodiments, if the counted number reaches the start-up completion time or is within a certain time range from the start-up completion time, switching the communication state of the device to the receiving state specifically includes:
when the first time reaches the second time or before the first time reaches the second time, the communication state of the equipment is switched to the receiving state;
the first time and the second time are respectively smaller than the random number, and the time difference between the first time and the second time is the starting completion time.
In some demonstrative embodiments, the method further includes: and if the pairing message fed back by the load equipment is not received within the period when the timing of the random number reaches the maximum value, reallocating the random number with other power supply equipment, and preempting the power supply authority of the load equipment again.
As shown in fig. 2, there is disclosed a power supply apparatus 100 including: after obtaining the power supply authority of the load device, the power transmission module 101 transmits a voltage only used for starting the communication function of the load device to the load device; a switching module 102 configured to switch the communication state of the device to a receiving state and prepare to monitor a pairing message fed back by the load device before a pre-stored communication function start completion time of the load device is reached or reached; and the first receiving module 103 is configured to establish a pairing relationship with the load device after receiving the pairing message.
In some demonstrative embodiments, the power supply device further includes: a timing module 104 that starts timing after the voltage is delivered to the load device.
In some demonstrative embodiments, the switching module is configured to switch the communication state of the device to the receiving state when the counted number reaches the start-up completion time or is within a certain time range from the start-up completion time.
In some demonstrative embodiments, the power supply device further includes: a first sending module 105 for broadcasting a preemption message for preempting the power supply authority of the load device; a second receiving module 106 for intercepting the preemption message broadcast by other power supply devices; wherein, the preemption message contains the preemption priority of the power supply equipment broadcasting the preemption message; and a level determining module 107 for determining that the device obtains the preemption right if the preemption priority of the device is always at the highest level within a period of time.
In some illustrative embodiments, the preemption priority of the preemption message is such that the power sourcing equipment starts counting with a random number after detecting the load device, and counts the number of hours at the time the preemption message is broadcast.
In some illustrative embodiments, the level determination module is configured to determine the level of the preemption priority according to a size relationship of respective counts of time of the present device and other power supply devices at the same time.
In some demonstrative embodiments, the random number has built-in a communication function start-up completion time of the load device.
In some illustrative embodiments, the level determining module is configured to determine that the device acquires the preemption right when the preemption priority of the device is always at the highest level when the counted number reaches the first time.
In some illustrative embodiments, the switching sub-module is configured to switch the communication state of the apparatus to the receiving state when or before the second time is reached after the first time;
the first time and the second time are respectively smaller than the random number, and the time difference between the first time and the second time is the starting completion time.
In some demonstrative embodiments, the power supply device further includes: and the restarting module 108 is used for reallocating the random number with other power supply equipment and preempting the power supply authority of the load equipment again if the pairing message fed back by the load equipment is not received within the period when the random number timing reaches the maximum value.
Illustrative embodiments of the invention are described below using a detailed flow chart:
the power supply equipment is provided with an electric energy wireless transmission module, a control module, a wake-up detection module and a wireless communication module; the wireless power transmission module is used for supplying power to load equipment; the control module is used as a control center of the wireless communication module and the wireless electric energy transmission module to realize the control of the equipment; the wake-up detection module is used for detecting whether load equipment needing power supply exists or not; the wireless communication module is used for carrying out data interaction with load equipment and other power supply equipment.
The load equipment is provided with an electric energy wireless receiving module, a control module, a wake-up module and a wireless communication module, and can be used as internal equipment of the load or external equipment for realizing the electric energy wireless transmission function of the load; when the device is used as peripheral equipment, the device is required to be installed on a corresponding load; the wireless receiving module is used for receiving electric energy transmitted by the power supply equipment; the control center of the control module wireless communication module and the electric energy wireless receiving module realizes the control of the equipment; the wake-up module is used for triggering wake-up of the power supply equipment; the wireless communication module is used for carrying out data interaction with the power supply equipment.
In the initial stage, the power supply equipment and the load equipment are both in an un-started standby state;
when the load device wakes up the power supply device through the wake-up module, the wake-up operation can be realized by adopting operations such as magnet attraction (that is, the wake-up module of the load device and the wake-up detection module of the power supply device both adopt magnets with magnetic force, and after mutual attraction, the power supply device realizes wake-up detection and wakes up from a standby state).
As shown in fig. 3, when a power supply device and a load device are targeted, the following process may be implemented:
when the load equipment awakens the power supply equipment to supply power to the load equipment, the power supply equipment only allows the load equipment to start the first voltage of the communication function of the load equipment to carry out wireless transmission through the sending end coil; the load equipment receives the first voltage through the receiving end coil, starts the communication function of the load equipment, and broadcasts a control message containing the rated operation parameters (the rated operation parameters at least contain rated working voltage or parameters which can be used for determining the rated working voltage, such as the model and the specification of the load equipment) outwards; the power supply equipment receives and analyzes the control message, obtains the rated operation parameters of the load equipment, and adjusts the first voltage on the coil of the sending end into a second voltage for the normal operation of the load equipment according to the rated operation parameters; and a receiving end coil of the load equipment receives the second voltage to achieve normal operation.
In some illustrative embodiments, in order to reduce noise in a communication channel (i.e., a wireless transmission frequency band for realizing wireless data transmission) as much as possible, a plurality of communication channels may be set according to a specific operation mode, for example, an operation channel set for each load device, and the operation channel is used for performing communication for the load device. In addition, because the invention does not need to carry out manual pairing operation by users or workers before power supply, the power supply equipment can not know the working channel of the load equipment, and based on the problem, the following procedures can be adopted to ensure that the power supply equipment knows the working channel of the load equipment:
after receiving the first voltage, the load device broadcasts a pairing message containing a designated working channel in a pairing channel (the pairing channel is a general channel), the power supply device receives the pairing message in the pairing channel, determines the working channel of the load device, switches to the working channel, and receives a control message sent by the load device.
In addition, the load device may encapsulate its device identifier and/or network address into the pairing message, so that when the power supply device receives a control message from the working channel, the power supply device performs identification to determine that the control message is sent by the load device.
In some illustrative embodiments, since the power supply device can only be in one communication state at a time, i.e. a sending state or a receiving state, in order to avoid a problem that the power supply device and the load device are in the same communication state and a pairing message cannot be transmitted to the power supply device, a start completion time of a communication function of the load device may be obtained in advance as a trigger condition for switching the communication state, specifically as follows:
the power supply equipment starts timing after transmitting the first voltage, switches the communication state of the power supply equipment into a receiving state before the starting completion time is reached or before the starting completion time is reached, and keeps the state until the pairing message is received if the power supply equipment is in the receiving state at the moment.
In some illustrative embodiments, the voltage required by the load device may fluctuate slightly from the rated operating voltage according to the actual operating condition of the load device, and in order to simplify the load device, a voltage adjusting component is not provided on the load device, and the adjusting function may be implemented on the power supply device, specifically as follows:
and after the load equipment runs, feeding back actual running parameters of the load equipment to the power supply equipment in real time, and adjusting the conveyed second voltage by the power supply equipment according to the actual running parameters.
As shown in fig. 4, when a plurality of power supply devices and one load device are targeted, the following process may be implemented:
when the load equipment simultaneously awakens a plurality of power supply equipment, the plurality of power supply equipment starts to seize the power supply authority of the load equipment; for example, each power supply device broadcasts its own preemption message and listens to the preemption messages of other power supply devices; each power supply device compares parameters which can determine the preemption priority of the power supply device according to the preemption message of the power supply device and the preemption messages of other power supply devices, the power supply devices with low preemption priority are eliminated by themselves, the only power supply device is finally screened out, and the subsequent program is the same as the program for one power supply device and one load device, which is not described herein.
In addition, in the process of preemption, the broadcast preemption message of the power supply equipment is broadcast at random time intervals, and the power supply equipment is in a receiving state at other moments, so that the condition that the preemption messages are broadcast simultaneously among a plurality of power supply equipment to cause that the mutual preemption messages cannot be received is avoided.
Preferably, the preemption message of the power supply device includes a random number for starting timing when the power supply device is awakened, and the level of the preemption priority is determined according to the magnitude relation of the timing when the preemption message is broadcast. And if the power supply equipment does not receive the preemption message with the preemption priority higher than the power supply equipment at one set moment, judging that the power supply equipment obtains the power supply authority of the load equipment.
Preferably, the random number contains a pairing time (time from the start of counting to the time of determining the power supply authority), a start completion time of the communication function of the load device, a pairing time, and random values different for each power supply device, which are stored in advance. And executing corresponding operation when the corresponding time point is reached.
And if the power supply equipment which acquires the power supply authority does not receive the pairing message of the load equipment when the timing number reaches the maximum value, timing by using the random number again, and re-preempting and carrying out subsequent procedures.
In addition, it should be understood by those skilled in the art that the workflow for a plurality of power supply devices and a load device may be similarly employed for operating one power supply device and one load device.
In addition, when wireless power supply is required for a plurality of complete equipment (power supply equipment and load equipment having a corresponding relationship) at the same time, in order to avoid cross mismatch, a method for preempting a pairing channel is provided, which can be implemented according to the following procedures:
when a plurality of load devices awaken a plurality of corresponding power supply devices at the same time, the plurality of power supply devices begin to seize the pairing channel; for example, each power supply device broadcasts its own preemption message and listens to the preemption messages of other power supply devices; each power supply device compares parameters which can determine the preemption priority of the power supply device according to the preemption message of the power supply device and the preemption messages of other power supply devices, the power supply devices with low preemption priority are eliminated by themselves, the only power supply device is finally screened out, and the subsequent program is the same as the program for one power supply device and one load device, which is not described herein. And after the maximum preemption time of the power supply equipment which fails in preemption passes, preempting the pairing channel again.
In addition, in the process of preemption, the broadcast preemption message of the power supply equipment is broadcast at random time intervals, and the power supply equipment is in a receiving state at other moments, so that the condition that the preemption messages are broadcast simultaneously among a plurality of power supply equipment to cause that the mutual preemption messages cannot be received is avoided.
Preferably, the preemption message of the power supply device includes a random number for starting timing when the power supply device is awakened, and the level of the preemption priority is determined according to the magnitude relation of the timing when the preemption message is broadcast. And if the power supply equipment does not receive the preemption message with the preemption priority higher than the power supply equipment at one set moment, judging that the power supply equipment obtains the power supply authority of the load equipment.
Preferably, the random number contains a pairing time (time from the start of counting to the time of determining the power supply authority), a start completion time of the communication function of the load device, a pairing time, and random values different for each power supply device, which are stored in advance. And executing corresponding operation when the corresponding time point is reached.
And if the power supply equipment which acquires the power supply authority does not receive the pairing message of the load equipment when the timing number reaches the maximum value, timing by using the random number again, and re-preempting and carrying out subsequent procedures.
In addition, it should be understood by those skilled in the art that the workflow for multiple sets of equipment may be equally employed for operating one power supply and one load.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A pairing method of a wireless power transmission system is used for a power supply device, and comprises the following steps:
after the power supply authority of the load equipment is obtained, voltage which is only used for starting a communication function of the load equipment is transmitted to the load equipment;
switching the communication state of the equipment into a receiving state before the pre-stored communication function starting completion time of the load equipment reaches or reaches, and preparing to monitor pairing information fed back by the load equipment;
after receiving the pairing message, establishing a pairing relationship with the load equipment;
the switching the communication state of the device to the receiving state before the pre-stored communication function start completion time of the load device is reached or reached specifically includes:
after the voltage is supplied to the load device, starting timing;
if the timing number reaches the starting completion time or is within a certain time range from the starting completion time, switching the communication state of the equipment to the receiving state;
after obtaining the power supply authority of the load device, before supplying a voltage for only starting a communication function of the load device to the load device, the method further includes:
broadcasting a preemption message for preempting the power supply authority of the load equipment, and intercepting the preemption message broadcast by other power supply equipment;
wherein, the preemption message contains the preemption priority of the power supply equipment broadcasting the preemption message;
and if the preemption priority of the equipment is always at the highest level in a period of time, determining that the equipment obtains the preemption authority.
2. The pairing method according to claim 1, wherein the preemption priority of the preemption message is that after the power supply equipment detects the load equipment, the power supply equipment starts to count time by using a random number, and the power supply equipment counts the time when the preemption message is broadcast;
and determining the level of the preemption priority according to the size relation of the counting time of the equipment and other power supply equipment at the same time.
3. The pairing method according to claim 2, wherein the random number incorporates a communication function start completion time of the load device;
if the preemption priority of the equipment is always at the highest level when the timing number reaches the first moment, determining that the equipment obtains the preemption permission;
if the counted number reaches the start-up completion time or is within a certain time range from the start-up completion time, switching the communication state of the device to the receiving state, specifically including:
when the first time reaches the second time or before the first time reaches the second time, the communication state of the equipment is switched to the receiving state;
the first time and the second time are respectively smaller than the random number, and the time difference between the first time and the second time is the starting completion time.
4. The pairing method according to claim 3, further comprising: and if the pairing message fed back by the load equipment is not received within the period when the timing of the random number reaches the maximum value, reallocating the random number with other power supply equipment, and preempting the power supply authority of the load equipment again.
5. A power supply apparatus, comprising:
the electric energy transmission module is used for transmitting voltage only used for starting the communication function of the load equipment to the load equipment after obtaining the power supply authority of the load equipment;
the switching module is used for switching the communication state of the equipment into a receiving state and preparing to monitor the pairing message fed back by the load equipment before the pre-stored communication function starting completion time of the load equipment reaches or reaches;
the first receiving module is used for establishing a pairing relationship with the load equipment after the pairing message is received;
the switching module comprises:
the timing module is used for starting timing after voltage is transmitted to the load equipment;
the switching submodule is used for switching the communication state of the equipment into the receiving state when the timing number reaches the starting completion time or is within a certain time range from the starting completion time;
the power supply device further includes:
the first sending module is used for broadcasting a preemption message for preempting the power supply authority of the load equipment;
the second receiving module is used for intercepting the preemption message broadcast by other power supply equipment; wherein, the preemption message contains the preemption priority of the power supply equipment broadcasting the preemption message;
and the level judging module is used for determining that the equipment obtains the preemption authority when the preemption priority of the equipment is always at the highest level in a period of time.
6. The power supply equipment according to claim 5, wherein the preemption priority of the preemption message is that the power supply equipment starts to count time with a random number after detecting the load equipment, and counts time at the moment of broadcasting the preemption message;
and the level judging module is used for determining the level of the preemption priority according to the size relation of the counting time of the equipment and other power supply equipment at the same time.
7. The power supply apparatus according to claim 6, wherein the random number incorporates a communication function start completion time of the load apparatus;
the level judging module is used for determining that the equipment obtains the preemption authority when the preemption priority of the equipment is always at the highest level when the timing number reaches the first moment;
the switching submodule is used for switching the communication state of the equipment to the receiving state when the first time reaches the second time or before the first time reaches the second time;
the first time and the second time are respectively smaller than the random number, and the time difference between the first time and the second time is the starting completion time.
8. The power supply apparatus according to claim 7, further comprising:
and the restarting module is used for reallocating the random number with other power supply equipment and preempting the power supply authority of the load equipment again if the pairing message fed back by the load equipment is not received within the period when the timing of the random number reaches the maximum value.
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| CN201410855469.3A CN105811596B (en) | 2014-12-31 | 2014-12-31 | Pairing method of electric energy wireless transmission system and power supply equipment |
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| CN201410855469.3A CN105811596B (en) | 2014-12-31 | 2014-12-31 | Pairing method of electric energy wireless transmission system and power supply equipment |
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| CN107093917B (en) * | 2017-05-27 | 2021-05-28 | 台州市吉吉知识产权运营有限公司 | Wireless charging method and wireless charging router |
| CN109873674B (en) * | 2017-12-05 | 2021-11-16 | 佛山市顺德区美的电热电器制造有限公司 | Matching method, matching system and heating platform of electric appliance |
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