CN105099007B - The definition of interaction state and conversion method in radiant type radio energy transmission system - Google Patents

Abstract

The invention discloses an interactive process state definition and conversion method in a radiative wireless power transmission system. The formulation of the control protocol of the radiative wireless power transmission system is not only a functional requirement, but also can promote the standardization process of the industry. The present invention proposes the definition of five states necessary for the system interaction process of the radiative wireless power transmission system and the conversion trigger conditions, so that the receiving end and the transmitting end can realize wireless communication interaction and power transmission according to the state switching process.

Description

State definition and transition method of interactive process in radiative wireless power transfer system

technical field

The invention relates to the technical field of protocol design for wireless power transmission, in particular to a method for defining and converting the state of an interactive process in a radiative wireless power transmission system.

Background technique

Wireless power transfer (wireless power transfer, WPT) refers to a method of energy transmission from a power source to a load without direct electrical contact. According to different transmission mechanisms, wireless energy transmission can be mainly divided into electromagnetic induction, magnetic field resonance, and radiation. Among them, the radiation type can be divided into radio wave mode, microwave mode, laser mode and ultrasonic mode.

In the 21st century, human beings are faced with the major challenge of achieving sustainable economic and social development, and environmental and energy issues have increasingly become one of the prominent issues in the world. How to effectively utilize existing energy sources has aroused extensive attention of scholars from various countries. New electric energy storage and transmission technologies, such as flywheel batteries, supercapacitors and wireless power transfer technologies, are important ways to achieve efficient energy utilization.

With the development of wireless charging technology, the standardization of wireless charging technology has become an inevitable trend. There are three mainstream wireless charging standards: Qi standard, Power Matters Alliance (PMA) standard, and Alliance for Wireless Power (A4WP) standard.

The QI standard and the Power Matters Alliance (PMA) standard are based on electromagnetic induction technology, and the A4WP standard is based on magnetic resonance technology. Based on these charging standards, in recent years, many companies have produced wireless charging mobile phones, mp3, portable computers, electric vehicles, etc.

However, the existing mainstream standard technology does not have a standard control protocol for radiative wireless power transmission. In view of this, it is necessary to conduct in-depth research and design on standard control protocols for radiative wireless power transmission.

Contents of the invention

The purpose of the present invention is to provide a state definition and conversion method of the interactive process in the radiative wireless power transmission system, so that the receiving end and the transmitting end can realize wireless communication interaction and power transmission according to the state switching process, and can also promote industrial standardization process.

The purpose of the present invention is achieved through the following technical solutions:

A method for defining and converting an interactive process state in a radiative wireless power transfer system, comprising:

A radiative wireless power transfer system including a transmitting end; the states of the transmitting end include: idle state, notification state, identification and configuration state, connection state, and energy transmission state;

The state transition process of the transmitter in a charging cycle is as follows: In the initial state, the transmitter is in the idle state, and it will periodically send out broadcast messages to enter the notification state; if it receives a response message from the receiver, it will turn to identification And the configuration state; when the transmitter and the receiver complete the identification configuration, enter the connection state; after that, turn to the energy transmission state, and perform energy transmission to the receiver, and after the power is completed, the transmitter returns to the idle state.

The process of the transmitter entering the idle state also includes:

After the transmitter sends a broadcast message, if it does not receive a reply within a certain period of time, it will return to the idle state;

When the transmitter and receiver fail to recognize the configuration, the transmitter returns to the idle state.

The process of identifying and configuring the transmitting end and the receiving end includes: identifying and configuring sub-states and reconfiguring sub-states;

In the identification and configuration sub-state, the transmitting end and the receiving end perform identity identification and authentication through information interaction. If the identification configuration is successful, it will turn to the connection state, and if the identification configuration fails, it will turn to the idle state;

When an error occurs at the transmitter and/or receiver, or parameters need to be reconfigured, the transmitter enters the reconfiguration sub-state. In this state, only a signal search or configuration parameter modification for a specific user is required; the configuration parameters include terminal support Protocol for frequency band and energy transmission; if the identification configuration fails in the reconfiguration sub-state, the transmitter will turn to the idle state; if the identification configuration is successful, it will turn to the connection state.

Connection status and energy transfer status include:

In the connected state, the transmitter and receiver have been identified and configured successfully, but energy transmission has not yet been carried out; in this state, the transmitter and receiver further synchronize energy and data transmission and reception parameters, including setting energy transmission power window parameters ;

In the energy transmission state, the transmitting end and the receiving end perform energy transmission, and at the same time, the transmitting end receives the feedback information periodically sent by the receiving end, and the transmitting end adjusts the parameters of energy transmission according to the feedback information to meet the parameter requirements of the receiving end;

The conversion process between the connection state and the energy transmission state is as follows: in the energy transmission state, if the energy transmission is completed, the transmitter stops the energy transmission and enters the connection state; in the energy transmission state, if an abnormal error occurs, the transmitter stops the energy transmission and returns to the In the connection state, after troubleshooting the error, re-enter the energy transmission state; in the energy transmission state, when the parameters need to be reconfigured, the transmitter stops the energy transmission and enters the connection state to reconfigure the static parameters;

The process of changing the connection state to other states also includes: in the connection state, if the transmitter loses the receiver or needs to be reconfigured, the transmitter exits the connection state and enters the identification and configuration state for reconfiguration; the system is fully charged and the transmitter stops. Energy transmission, enter the connected state, and then turn from the connected state to the idle state;

The process of changing the energy transmission state to other states also includes: in the energy transmission state, if the feedback information from the receiving end is lost, the transmitting end enters an idle state to search for the lost receiving end.

A method for defining and converting an interactive process state in a radiative wireless power transfer system, comprising:

A radiative wireless power transmission system including a receiving end; the states of the receiving end include: idle state, ready state, identification and configuration state, connection state, and energy receiving state;

The state transition process of the receiving end in a charging cycle is as follows: the receiving end is in an idle state when the power is sufficient, and does not respond to the broadcast message sent by the transmitting end in this state; if it is detected that the receiving end is below the threshold or the user initiates a charging request When the receiving end enters the ready state; after entering the ready state, if it receives a broadcast message asking whether charging is required, the receiving end will respond to the broadcast message and turn to the identification and configuration state; when the receiving end and the transmitting end After completing the identification configuration, enter the connection state; after that, switch to the energy receiving state, receive the energy transmitted by the transmitter, and return to the idle state when the receiver is fully charged.

The entry process of the idle state also includes:

In the energy receiving state, the receiving end loses the connection with the transmitting end and returns to the idle state.

The receiver and transmitter identification configuration process includes:

In the identification and configuration state, the receiving end and the transmitting end perform identity identification and authentication through information interaction. If the identification configuration is successful, it will turn to the connection state, and if the identification configuration fails, it will turn to the idle state.

Connection status and energy receiving status include:

In the connected state, the receiving end and the transmitting end have been identified and configured successfully, but the energy transmission has not yet been carried out; in this state, the receiving end and the transmitting end further synchronize the parameters of energy and data transmission and reception, including setting the energy transmission power window parameters ;

In the energy receiving state, the receiving end and the transmitting end perform energy transmission, and the receiving end periodically feeds back information to the transmitting end, and the transmitting end adjusts the parameters of energy transmission according to the feedback information to meet the parameter requirements of the receiving end;

The conversion process between the connection state and the energy receiving state is as follows: in the energy receiving state, when the system is fully charged, the receiving end stops receiving energy and enters the connection state; in the energy receiving state, if an abnormal error occurs, the transmitting end stops energy transmission, and the receiving end returns to In the connection state, after the error is eliminated, re-enter the energy receiving state; in the energy receiving state, if the parameters of the receiving end change, it needs to re-match the parameters with the transmitting end, the system stops energy transmission, and the receiving end returns to the connection state; in the energy receiving state , the receiving end loses the connection with the transmitting end, and the receiving end turns into a connected state;

The process of transitioning from the connection state to other states also includes: in the connection state, the connection between the receiving end and the transmitting end is lost, and the receiving end returns to the ready state; in the energy receiving state, if the parameters of the receiving end change, the parameters need to be re-matched with the transmitting end. The system stops energy transmission, the receiver returns to the connection state, and then enters the identification and configuration state for reconfiguration; after the system is fully charged, the transmitter stops energy transmission, enters the connection state, and then changes from the connection state to the idle state.

A method for defining and converting an interactive process state in a radiative wireless power transfer system, comprising:

A radiative wireless power transfer system including a transmitting end and a receiving end; the state of the transmitting end includes: idle state, notification state, identification and configuration state, connection state, and energy transmission state; the state of the receiving end includes: idle state, ready state , identification and configuration status, connection status and energy receiving status;

The process of state transition between the transmitting end and the receiving end in a charging cycle is as follows:

In the initial state, the transmitter is in an idle state, and it will periodically send out broadcast messages to enter the notification state;

The receiving end is in the idle state when the power is sufficient, and does not respond to the broadcast message sent by the transmitting end in this state; if it is detected that the receiving end is below the threshold or the user initiates a charging request, the receiving end enters the ready state, and after entering the ready state If receiving a broadcast message asking whether charging is required, the receiving end will respond to the broadcast message and turn to the identification and configuration state;

When the transmitter receives the response message from the receiver, it turns to the identification and configuration state; when the receiver and the transmitter complete the identification configuration, both the transmitter and the receiver enter the connection state;

After that, the transmitting end turns into the energy transmission state, and the receiving end turns into the energy receiving state. At the same time, the transmitting end transmits energy to the receiving end; when the receiving end is fully charged, both the transmitting end and the receiving end enter the idle state.

It can be seen from the above-mentioned technical solution provided by the present invention that the solution proposes the definition of five states and the conversion trigger conditions necessary for the system interaction process of the radiative wireless power transfer system, so that the receiving end and the transmitting end can follow the state The switching process realizes wireless communication interaction and power transmission.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of a state transition of a transmitter provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a state transition of a receiving end provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Radiative wireless power transfer technology, compared with electromagnetic induction and magnetic resonance technology, has a longer transmission distance and better convenience, and has great research prospects and applications, especially for wireless sensor networks. This method mainly uses the microwave band for power transmission. Microwaves are electromagnetic waves with wavelengths between radio waves and infrared rays. Due to the high frequency, it can pass through the ionosphere without reflection. Cosmic space is very ideal for microwave transmission, with almost no energy loss, and the loss when passing through the atmosphere is about 2%. Microwave power transmission uses the principle of electromagnetic radiation to send power from the power supply. The power frequency alternating current is converted into microwaves through a microwave converter, and then sent to space through the microwave transmitting antenna at the transmitting end, and then transmitted to the ground microwave receiving end. The received microwaves pass through the converter. Convert microwave into power frequency alternating current for users to use. Radiation-based wireless charging protocol standardization is not only a functional requirement, but also an inevitable requirement for industrial standardization. Therefore, the present invention provides a method for defining and converting the state of an interactive process in a radiative wireless power transmission system.

For ease of understanding, a detailed description will be made below in conjunction with specific embodiments.

An embodiment of the present invention provides a method for defining and converting an interactive process state in a radiative wireless power transmission system. It includes:

A radiative wireless power transfer system including a transmitting end; the states of the transmitting end include: idle state, notification state, identification and configuration state, connection state, and energy transmission state;

The state transition process of the transmitter in a charging cycle is as follows: In the initial state, the transmitter is in the idle state, and it will periodically send out broadcast messages to enter the notification state; if it receives a response message from the receiver, it will turn to identification And the configuration state; when the transmitter and the receiver complete the identification configuration, enter the connection state; after that, turn to the energy transmission state, and perform energy transmission to the receiver, and after the power is completed, the transmitter returns to the idle state.

The process of the transmitting end entering the idle state also includes:

After the transmitter sends a broadcast message, if it does not receive a reply within a certain period of time, it will return to the idle state;

When the transmitter and receiver fail to recognize the configuration, the transmitter returns to the idle state.

The process of identifying and configuring the transmitting end and the receiving end includes: identifying and configuring sub-states and reconfiguring sub-states;

In the identification and configuration sub-state, the transmitting end and the receiving end perform identity identification and authentication through information interaction. If the identification configuration is successful, it will turn to the connection state, and if the identification configuration fails, it will turn to the idle state;

When an error occurs at the transmitter and/or receiver, or parameters need to be reconfigured, the transmitter enters the reconfiguration sub-state. In this state, only a signal search or configuration parameter modification for a specific user is required; the configuration parameters include terminal support Protocol for frequency band and energy transmission; if the identification configuration fails in the reconfiguration sub-state, the transmitter will turn to the idle state; if the identification configuration is successful, it will turn to the connection state.

The connection state and energy transmission state include:

In the connected state, the transmitter and receiver have been identified and configured successfully, but energy transmission has not yet been carried out; in this state, the transmitter and receiver further synchronize energy and data transmission and reception parameters, including setting energy transmission power window parameters ;

In the energy transmission state, the transmitting end and the receiving end perform energy transmission, and at the same time, the transmitting end receives feedback information sent periodically from the receiving end, and the transmitting end adjusts the parameters of energy transmission according to the feedback information to meet the parameter requirements of the receiving end;

The conversion process between the connection state and the energy transmission state is as follows: in the energy transmission state, if the energy transmission is completed, the transmitter stops the energy transmission and enters the connection state; in the energy transmission state, if an abnormal error occurs, the transmitter stops the energy transmission and returns to the In the connection state, after troubleshooting the error, re-enter the energy transmission state; in the energy transmission state, when the parameters need to be reconfigured, the transmitter stops the energy transmission and enters the connection state to reconfigure the static parameters;

The process of changing the connection state to other states also includes: in the connection state, if the transmitter loses the receiver or needs to be reconfigured, the transmitter exits the connection state and enters the identification and configuration state for reconfiguration; the system is fully charged and the transmitter stops. Energy transmission, enter the connected state, and then turn from the connected state to the idle state;

The process of changing the energy transmission state to other states also includes: in the energy transmission state, if the feedback information from the receiving end is lost, the transmitting end enters an idle state to search for the lost receiving end.

For the convenience of description, each state and state transition of the transmitting end will be described in detail below with reference to FIG. 1 .

1. Idle state

When the connection between the transmitter and the receiver is not established, the transmitter is in an idle state. In the idle state, the energy consumption of the transmitter is low, and it will periodically send a notification message in the form of broadcast, so as to inform the receiver within the coverage of the existence of the wireless energy transmitter, so that the receiver can decide whether to charge. If the transmitter does not receive a response message within a certain period of time, it will return to the idle state and wait for the next cycle to continue sending broadcast signals; if it receives a response message, it will enter the identification and configuration state.

1) Idle state entry process:

The transmitter is initially idle and periodically sends broadcast messages.

The transmitter enters the notification state after sending the broadcast message, and returns to the idle state if no reply is received within a certain period of time.

When the transmitter and receiver fail to recognize the configuration, the transmitter returns to the idle state.

After charging is complete, the transmitter returns to the idle state.

2) Leave the process in idle state:

The transmitter periodically sends a broadcast signal, and then turns to a notification state, waiting for a response to the broadcast signal.

2. Notification Status

The transmitter periodically sends a broadcast message, and then turns to the notification state, waiting for the user who needs to charge to respond to the broadcast message.

1) The notification state enters the process:

After the transmitter sends the broadcast message, it turns to the notification state and waits for a response.

2) Notification state leaves the process:

In the notification state, after receiving the response message from the receiving end, the transmitting end turns to the identification and configuration state to match the receiving end.

In the notification state, if no response message is received after a certain period of time, the transmitter returns to the idle state.

3. Identification and configuration status

This state includes two sub-states, which are the general identification and configuration sub-state and the reconfiguration sub-state. In the general identification and configuration sub-state, the transmitting end and the receiving end perform identity identification and authentication through information interaction. If the identification configuration is successful, it will turn to the connection state, and if the identification configuration fails, it will turn to the idle state. When an error occurs at the transmitter and/or receiver, or parameters need to be reconfigured, the transmitter will enter the reconfiguration sub-state. In this state, only a signal search or parameter modification for a specific user is required. The parameters for identifying the configuration include the frequency band supported by the terminal, the energy transmission protocol, and the like.

1) Identification and configuration state entry process:

In the notification state, the transmitter enters the identification and configuration state after receiving the response message from the receiver.

When the transmitter in the connection state loses the connection with the receiver, it will enter the identification and configuration state.

If the receiving end is lost during energy transmission, the transmitting end enters the identification and configuration state for reconfiguration.

If parameters need to be reconfigured during energy transmission, the transmitter stops energy transmission first, and then enters the reconfiguration sub-state.

2) Identification and configuration status leave process:

After the identification configuration is successful, the transmitter enters the connection state.

After the identification configuration fails, the transmitter enters the idle state.

After the reconfiguration is successful, the transmitter enters the connection state.

After the reconfiguration fails, the transmitter enters the idle state.

4. Connection status

This state means that the transmitter and receiver have been successfully identified and configured, but have not yet transmitted energy. In this state, the transmitting end and the receiving end further synchronize energy and data transmission and reception parameters, including setting energy transmission power window and other parameters.

1) The connection state enters the process:

After the identification configuration is successful, the transmitter enters the connection state.

After the energy transmission is completed, the transmitter stops the energy transmission, enters the connection state, and then returns to the idle state.

During the energy transmission process, if an abnormal error occurs, such as over-current, high temperature, etc., the transmitter stops energy transmission, returns to the connection state, and continues energy transmission after the error is eliminated.

During the energy transmission process, when the parameters need to be reconfigured, the transmitter stops the energy transmission and enters the connection state to reconfigure the static parameters.

2) The connection state leaves the process:

In the connection state, if the transmitter loses the receiver or needs to be reconfigured, the transmitter exits the connection state and enters the identification and configuration state for reconfiguration.

After the system is fully charged, the transmitter stops energy transmission, enters the connected state, and then changes from the connected state to the idle state.

5. Energy transmission status

In this state, the transmitting end and the receiving end perform energy transmission, and at the same time, the receiving end periodically feeds back information to the transmitting end, and the transmitting end adjusts the parameters of energy transmission according to the feedback information to meet the parameter requirements of the receiving end.

1) The energy transmission state enters the process:

After further synchronizing the energy transmission parameters in the connected state, the transmitter enters the energy transmission state

2) The process of leaving the energy transmission state:

When an abnormal error occurs during energy transmission, such as overvoltage, overcurrent, or high temperature, the transmitter stops energy transmission and returns to the connected state.

During the energy transmission process, the feedback information of the receiving end is lost, and the transmitting end enters an idle state to search for the lost receiving end.

The embodiment of the present invention also provides a method for defining and converting the state of an interactive process in a radiative wireless power transmission system. It includes:

A radiative wireless power transmission system including a receiving end; the states of the receiving end include: idle state, ready state, identification and configuration state, connection state, and energy receiving state;

The state transition process of the receiving end in a charging cycle is as follows: the receiving end is in an idle state when the power is sufficient, and does not respond to the broadcast message sent by the transmitting end in this state; if it is detected that the receiving end is below the threshold or the user initiates a charging request When the receiving end enters the ready state; after entering the ready state, if it receives a broadcast message asking whether charging is required, the receiving end will respond to the broadcast message and turn to the identification and configuration state; when the receiving end and the transmitting end After completing the identification configuration, enter the connection state; after that, switch to the energy receiving state, receive the energy transmitted by the transmitter, and return to the idle state when the receiver is fully charged.

Further, the entering process of the idle state also includes:

In the energy receiving state, the receiving end loses the connection with the transmitting end and returns to the idle state.

Further, the process of identifying and configuring the receiving end and the transmitting end includes:

In the identification and configuration state, the receiving end and the transmitting end perform identity identification and authentication through information interaction. If the identification configuration is successful, it will turn to the connection state, and if the identification configuration fails, it will turn to the idle state.

Further, the connection state and energy receiving state include:

In the connected state, the receiving end and the transmitting end have been identified and configured successfully, but the energy transmission has not yet been carried out; in this state, the receiving end and the transmitting end further synchronize the parameters of energy and data transmission and reception, including setting the energy transmission power window parameters ;

In the energy receiving state, the receiving end and the transmitting end perform energy transmission, and the receiving end periodically feeds back information to the transmitting end, and the transmitting end adjusts the parameters of energy transmission according to the feedback information to meet the parameter requirements of the receiving end;

The conversion process between the connection state and the energy receiving state is as follows: in the energy receiving state, when the system is fully charged, the receiving end stops receiving energy and enters the connection state; in the energy receiving state, if an abnormal error occurs, the transmitting end stops energy transmission, and the receiving end returns to In the connection state, after the error is eliminated, re-enter the energy receiving state; in the energy receiving state, if the parameters of the receiving end change, it needs to re-match the parameters with the transmitting end, the system stops energy transmission, and the receiving end returns to the connection state; in the energy receiving state , the receiving end loses the connection with the transmitting end, and the receiving end turns into a connected state;

The process of transitioning from the connection state to other states also includes: in the connection state, the connection between the receiving end and the transmitting end is lost, and the receiving end returns to the ready state; in the energy receiving state, if the parameters of the receiving end change, the parameters need to be re-matched with the transmitting end. The system stops energy transmission, the receiver returns to the connection state, and then enters the identification and configuration state for reconfiguration; after the system is fully charged, the transmitter stops energy transmission, enters the connection state, and then changes from the connection state to the idle state.

For the convenience of description, each state and state transition of the receiving end will be described in detail below in conjunction with FIG. 2 .

1. Idle state

The receiving end is in the idle state when the power is sufficient. If it detects that the battery is currently low or the user initiates a charging request, the receiving end enters the ready state. In the idle state, the receiver does not respond to broadcast messages sent by the transmitter.

1) Idle state entry process:

The receiving end is idle when the power is sufficient.

After the receiving end is fully charged, it stops receiving energy. The receiving end first enters the connection state, and after disconnecting, it enters the idle state.

In the energy receiving state, the receiving end loses the connection with the transmitting end, and the receiving end returns to the idle state.

2) Leave the process in idle state:

When the receiving end detects that the power is lower than a certain threshold, it enters the ready state.

2. Ready state

The ready state means that the power reserve of the receiving end is insufficient and needs to be charged. At this time, if a broadcast message is received asking whether charging is required, the receiving end will respond to the broadcast message and turn to the identification and configuration state.

1) The ready state enters the process:

When the receiving end detects that the power is lower than a certain threshold, it enters the ready state.

When the user initiates charging of the device, it enters the ready state.

2) Ready state leaves the process:

In the ready state, when the receiver receives a broadcast message asking whether it needs to be charged, it responds to the message and enters the identification and configuration state.

3. Identification and configuration status

In the identification and configuration state, the transmitting end and the receiving end perform identity identification and authentication through information interaction. If the identification configuration is successful, the receiving end enters the connection state, and if the identification configuration fails, it turns to the idle state.

1) Identification and configuration state entry process:

In the ready state, the receiving end responds to the notification message from the transmitting end and enters the identification and configuration state.

In the connection state, when the parameters need to be reconfigured, the receiving end enters the identification and configuration state.

2) Identification and configuration status leave process:

After the receiving end and the transmitting end are identified and configured successfully, the receiving end enters the connection state.

The identification and configuration of the receiving end and the transmitting end fail, and the receiving end returns to the idle state.

After the receiving end successfully initiates active reconfiguration, the receiving end enters the connection state.

4. Connection status

The connection status means that the transmitter and receiver have been identified and configured successfully, but no energy transmission has been performed yet. In this state, the transmitting end and the receiving end further synchronize the parameters of energy transmission.

1) The connection state enters the process:

The receiving end and the transmitting end are identified and configured successfully, and the receiving end enters the connection state.

In the energy receiving state, when the parameters need to be reconfigured, the receiving end stops receiving energy and enters the connection state.

After the reconfiguration of the receiving end and the transmitting end is successful, the receiving end enters the connection state.

After the charging is completed, the receiving end stops receiving energy and turns to the connected state.

2) The connection state leaves the process:

In the connected state, the connection between the receiving end and the transmitting end is lost, and the receiving end returns to the ready state.

In the connected state, after the energy transmission parameters are successfully synchronized, the receiving end enters the energy receiving state.

When an abnormal error occurs during energy transmission, such as overvoltage, overcurrent, or high temperature, the receiving end stops energy reception and returns to the connection state for troubleshooting. After the error is eliminated, the system continues energy transmission.

During the energy transmission process, if the receiving end has a parameter change and needs to re-match the parameters with the transmitting end, the system will disconnect the energy transmission, the receiving end will return to the connection state, and then turn to the identification and configuration state.

5. Energy receiving state

In this state, the transmitting end and the receiving end carry out energy transmission, and the receiving end periodically feeds back information to the transmitting end. Require.

1) The energy receiving state enters the process:

In the connection state, after the specific parameters are successfully matched, the receiving end enters the energy receiving state

2) The energy receiving state leaves the process:

If an abnormal error occurs during energy transmission, such as overvoltage, overcurrent, or high temperature, the system may temporarily interrupt energy transmission, and the receiving end returns to the connection state for troubleshooting. After the error is eliminated, the system continues energy transmission.

During the energy transmission process, if the parameters of the receiving end change, the parameters need to be re-matched with the transmitting end, the system stops energy transmission, the receiving end returns to the connection state, and then turns to the identification and configuration state to modify the parameters.

In the energy receiving state, the connection with the transmitting end is lost, and the receiving end turns into a connected state.

After the charging is completed, the receiving end stops receiving energy and turns to the connected state.

The embodiment of the present invention also provides a method for defining and converting the state of an interactive process in a radiative wireless power transmission system. It includes:

A radiative wireless power transfer system including a transmitting end and a receiving end; the state of the transmitting end includes: idle state, notification state, identification and configuration state, connection state, and energy transmission state; the state of the receiving end includes: idle state, ready state , identification and configuration status, connection status and energy receiving status;

The process of state transition between the transmitting end and the receiving end in a charging cycle is as follows:

In the initial state, the transmitter is in an idle state, and it will periodically send out broadcast messages to enter the notification state;

The receiving end is in the idle state when the power is sufficient, and does not respond to the broadcast message sent by the transmitting end in this state; if it is detected that the receiving end is below the threshold or the user initiates a charging request, the receiving end enters the ready state, and after entering the ready state If receiving a broadcast message asking whether charging is required, the receiving end will respond to the broadcast message and turn to the identification and configuration state;

When the transmitter receives the response message from the receiver, it turns to the identification and configuration state; when the receiver and the transmitter complete the identification configuration, both the transmitter and the receiver enter the connection state;

After that, the transmitting end turns into the energy transmission state, and the receiving end turns into the energy receiving state. At the same time, the transmitting end transmits energy to the receiving end; when the receiving end is fully charged, both the transmitting end and the receiving end enter the idle state.

It should be noted that, the detailed transition process of each state of the transmitting end and the receiving end has been introduced in detail in the previous embodiments, so it will not be repeated here.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1. the definition of interaction state and conversion method in a kind of radiant type radio energy transmission system, it is characterised in that including：

Radiant type radio energy transmission system comprising transmitting terminal；The state of the transmitting terminal includes：Idle condition, notice shape State, identification and configuration status, connection status and energy transmission state；

The process of transmitting terminal State Transferring is as follows in one charging cycle：In original state, transmitting terminal is in idle condition, its Broadcast message will be periodically sent out hence into notice state；If receiving the response message of receiving terminal, switch to know Not and configuration status；After transmitting terminal and receiving terminal complete identification configuration, into connection status；Afterwards, energy transmission is switched to State, and energy transmission is carried out to receiving terminal, and after charging is finished, transmitting terminal comes back to idle condition；

Wherein, identification includes with configuration status：Identification is with configuring sub- state and reconfiguring sub- state；Identification is with configuring sub- state In, transmitting terminal and receiving terminal carry out the identification and certification of identity by information exchange, if identification configuration successful, switch to connect State is connect, if identification configuration failure, switchs to idle condition；When mistake occur in transmitting terminal and/or receiving terminal, or need weight During new configuration parameter, transmitting terminal, which enters, reconfigures sub- state, only need to carry out specific user under this state signal search or Person's parameter is changed；Configuration parameter therein includes frequency range, the agreement of energy transmission that terminal is supported；If reconfigure sub- state according to Configuration failure is so recognized, then transmitting terminal switchs to idle condition；If recognizing configuration successful, switch to connection status.

2. according to the method described in claim 1, it is characterised in that the process that transmitting terminal enters idle condition also includes：

Transmitting terminal is sent after broadcast message, if not receiving reply in certain time, comes back to idle condition；

When transmitting terminal and receiving terminal identification configuration failure, transmitting terminal comes back to idle condition.

3. according to the method described in claim 1, it is characterised in that connection status includes with energy transmission state：

During connection status, transmitting terminal and receiving terminal is identified and configuration successful, but the transmission of energy is not carried out also；At this Under individual state, the parameter of transmitting terminal and the further synchronous energy of receiving terminal and data transmit-receive, including setting energy transimission power window Mouth parameter；

In energy transmission state, the transmission of transmitting terminal and receiving terminal progress energy is periodically sent out while transmitting terminal receives receiving terminal The feedback information sent, transmitting terminal adjusts the parameter that energy is transmitted according to feedack, meets receiving terminal parameter requirements；

Connection status and energy transmission state transfer process are as follows：Under energy transmission state, if energy end of transmission, transmitting terminal Stop energy transmission, into connection status；Under energy transmission state, if there is exception error, transmitting terminal stops energy transmission, Connection status is returned to, is waited after debug, energy transmission state is reentered；, it is necessary to reconfigure ginseng under energy transmission state During number, transmitting terminal stops energy transmission, and static parameter is reconfigured into connection status；

The process that connection status is transferred to other states also includes：Under connection status, if transmitting terminal loses receiving terminal, or need When reconfiguring, transmitting terminal exits connection status, is reconfigured into identification with configuration status；System charging is finished, transmitting terminal Stop the transmission of energy, switch to idle condition into connection status, then by connection status；

The process that energy transmission state is transferred to other states also includes：Under energy transmission state, the feedback information of receiving terminal is lost, Then transmitting terminal enters idle condition, searches for the receiving terminal lost.

4. the definition of interaction state and conversion method in a kind of radiant type radio energy transmission system, it is characterised in that including：

Radiant type radio energy transmission system comprising receiving terminal；The state of the receiving terminal includes：Idle condition, ready shape State, identification and configuration status, connection status and energy acceptance state；

The process that receiving-end state is changed in one charging cycle is as follows：Idle condition, the shape are in when receiving terminal electricity is sufficient The broadcast message of transmitting terminal transmission is not responding under state；If detecting when receiving terminal is less than threshold value for electricity or user actively sending out When playing charge request, receiving terminal enters ready state；Ask whether to need what is charged if receiving and having after into ready state During broadcast message, receiving terminal is then responded to the broadcast message, and switchs to identification and configuration status；When receiving terminal and transmitting terminal After completion identification configuration, into connection status；Afterwards, switch to energy acceptance state, receive the energy of transmitting terminal transmission, when connecing After receiving end charging is finished, idle condition is come back to；

Under identification and configuration status, receiving terminal, by information exchange, carries out the identification and certification of identity with transmitting terminal, if known Other configuration successful, then switch to connection status, if identification configuration failure, switchs to idle condition；Under connection status, parameter needs When reconfiguring, receiving terminal enters identification and configuration status, when mistake occur in transmitting terminal and/or receiving terminal, or needs again During configuration parameter, transmitting terminal enter reconfigures sub- state, only needed under this state to specific user carry out signal search or Parameter is changed；Configuration parameter therein includes frequency range, the agreement of energy transmission that terminal is supported.

5. method according to claim 4, it is characterised in that the entrance process of the idle condition also includes：

Under energy acceptance state, receiving terminal loses the connection with transmitting terminal, comes back to idle condition.

6. method according to claim 4, it is characterised in that connection status includes with energy acceptance state：

During connection status, receiving terminal and transmitting terminal is identified and configuration successful, but the transmission of energy is not carried out also；At this Under individual state, the parameter of receiving terminal and the further synchronous energy of transmitting terminal and data transmit-receive, including setting energy transimission power window Mouth parameter；

In energy acceptance state, the transmission of receiving terminal and transmitting terminal progress energy, receiving terminal is periodically to transmitting terminal feedback letter Breath, transmitting terminal adjusts the parameter that energy is transmitted according to feedack, meets receiving terminal parameter requirements；

Connection status and energy acceptance state conversion process are as follows：Under energy acceptance state, system charging is finished, then receiving terminal stops Only energy acceptance, into connection status；Under energy acceptance state, if there is exception error, transmitting terminal stops energy transmission, connects Receiving end returns to connection status, waits after debug, reenters energy acceptance state；Under energy acceptance state, if receiving terminal Generation parameter change is, it is necessary to which with transmitting terminal again match parameter, system stops energy transmission, and receiving terminal returns to connection status；Energy Measure under reception state, receiving terminal loses the connection with transmitting terminal, receiving terminal switchs to connection status；

The process that connection status is transferred to other states also includes：Under connection status, the connection of receiving terminal and transmitting terminal is lost, and is received End returns to ready state；Under energy acceptance state, if parameter change occurs for receiving terminal, it is necessary to match ginseng again with transmitting terminal Number, system stops energy transmission, and receiving terminal returns to connection status, subsequently enters identification and is reconfigured with configuration status；System Charging is finished, and transmitting terminal stops the transmission of energy, switchs to idle condition into connection status, then by connection status.

7. the definition of interaction state and conversion method in a kind of radiant type radio energy transmission system, it is characterised in that including：

Radiant type radio energy transmission system comprising transmitting terminal and receiving terminal；The state of the transmitting terminal includes：Idle condition, Notice state, identification and configuration status, connection status and energy transmission state；The state of the receiving terminal includes：Idle condition, Ready state, identification and configuration status, connection status and energy acceptance state；

Transmitting terminal and the process that receiving-end state is changed are as follows in one charging cycle：

In original state, transmitting terminal is in idle condition, and it will periodically be sent out broadcast message hence into notice State；

The broadcast message that transmitting terminal transmission is not responding under idle condition, the state is in when receiving terminal electricity is sufficient；If detection When being less than threshold value to receiving terminal for electricity or when user actively initiates charge request, receiving terminal enters ready state, into just If received after not-ready status with the broadcast message for asking whether to need to charge, receiving terminal then makes sound to the broadcast message Should, and switch to identification and configuration status；

When transmitting terminal receives the response message of receiving terminal, then switch to identification and configuration status；When receiving terminal and transmitting terminal are completed After identification configuration, transmitting terminal enters connection status with receiving terminal；

Afterwards, transmitting terminal switchs to energy transmission state, and receiving terminal switchs to energy acceptance state, meanwhile, transmitting terminal enters to receiving terminal Row energy is transmitted；After receiving terminal charging is finished, transmitting terminal enters idle condition with receiving terminal；

Wherein, the identification of transmitting terminal includes with configuration status：Identification is with configuring sub- state and reconfiguring sub- state；Identification and configuration In sub- state, transmitting terminal and receiving terminal carry out the identification and certification of identity by information exchange, if identification configuration successful, Switch to connection status, if identification configuration failure, switchs to idle condition；When there is mistake in transmitting terminal and/or receiving terminal, or When needing to reconfigure parameter, transmitting terminal, which enters, reconfigures sub- state, only needs to carry out signal to specific user under this state Search or parameter modification；Configuration parameter therein includes frequency range, the agreement of energy transmission that terminal is supported；If reconfiguring son State still recognizes configuration failure, then transmitting terminal switchs to idle condition；If recognizing configuration successful, switch to connection status.