Energy emitting device, control method thereof and passive bluetooth system

Abstract

The application provides an energy transmitting device, a control method thereof and a passive Bluetooth system. The control method of the energy transmitting device comprises: if a receiver receives energy transmitted by the energy transmitting device, obtaining the receiving efficiency of the receiver; and if the receiving efficiency is lower than a threshold, adjusting a directional antenna to change the relative position of the directional antenna and the receiver and improve the receiving efficiency of the receiver. When the energy receiving efficiency of the receiver is lower than the threshold, the relative position of the directional antenna and the receiver is changed so that the wave crest of the energy radiated by the directional antenna is close to the receiver, thereby improving the receiving efficiency of the receiver and the energy transmission efficiency between the energy transmitting device and the passive Bluetooth device.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, and in particular relates to an energy emission device and its control method and a passive Bluetooth system. Background Technology

[0002] A passive Bluetooth system is a wireless power transmission system in which an active power transmitter supplies power to a passive Bluetooth device. Both the active power transmitter and the passive Bluetooth device require antennas to operate. Energy is radiated between the antennas, and the passive Bluetooth device stores the energy, which can then be used to drive the load within the passive Bluetooth device, thereby realizing the preset functions of the passive Bluetooth device.

[0003] However, in related technologies, the energy transmission efficiency of energy-emitting devices and passive Bluetooth devices is poor. Summary of the Invention

[0004] This application provides an energy transmitting device and its control method, as well as a passive Bluetooth system, which can improve the energy transmission efficiency between the energy transmitting device and the passive Bluetooth device.

[0005] In a first aspect, embodiments of this application provide a control method for an energy emission device, comprising:

[0006] If a receiver receives the energy emitted by the energy transmitting device, then the receiving efficiency of the receiver is obtained;

[0007] If the reception efficiency is lower than the threshold, the directional antenna is adjusted to change the relative position of the directional antenna and the receiver, thereby improving the reception efficiency of the receiver.

[0008] Optionally, the control method further includes:

[0009] Obtain the position information of the receiver relative to the energy transmitting device;

[0010] The directional antenna is adjusted according to the location information so that it faces the receiver.

[0011] Optionally, the control method further includes:

[0012] Adjust the directional antenna to change its position relative to the receiver, and obtain the receiver's reception efficiency when the directional antenna is in each position;

[0013] The target location with the highest receiver reception efficiency is determined based on the reception efficiency at each location;

[0014] The directional antenna is adjusted to the target position, and energy is transmitted to the receiver through the directional antenna.

[0015] Optionally, after adjusting the directional antenna to the target position and transmitting energy to the receiver through the directional antenna, the control method further includes:

[0016] Obtain the reception efficiency of the receiver after adjusting the directional antenna to the target position;

[0017] If the receiving efficiency is still lower than the threshold, then the transmitting power of the directional antenna is increased.

[0018] Secondly, embodiments of this application also provide an energy emission device, comprising:

[0019] Radio frequency circuits;

[0020] A directional antenna is connected to the radio frequency circuit and works with the radio frequency circuit to transmit energy;

[0021] A controller, connected to the radio frequency circuit and the directional antenna, is used to obtain the receiver's reception efficiency;

[0022] A drive mechanism, connected to the controller, is used to adjust the relative position of the directional antenna and the receiver according to the control signal from the controller, so as to improve the receiving efficiency of the receiver.

[0023] Optionally, the drive mechanism includes:

[0024] A base for mounting the energy emission device at a preset position;

[0025] A rotating component is rotatably connected to the base, and the directional antenna is fixed to the rotating component;

[0026] The motor is electrically connected to the controller and to the rotating component, and the motor is used to drive the rotating component to rotate under the control of the controller.

[0027] Optionally, the energy emitting device further includes:

[0028] An omnidirectional antenna is connected to the radio frequency circuit and is used to cooperate with the radio frequency circuit to transmit energy in multiple directions so as to activate the receiver.

[0029] Thirdly, embodiments of this application also provide a passive Bluetooth system, including:

[0030] Energy emission devices as described in any of the preceding items;

[0031] A passive Bluetooth device includes a receiver and a first antenna, the first antenna cooperating with the receiver to obtain energy from the energy transmitting device.

[0032] Optionally, the passive Bluetooth device is used to adjust the position of the directional antenna in the energy transmitting device according to the receiving efficiency of the energy obtained from the energy transmitting device.

[0033] Optionally, the passive Bluetooth system includes a processor and multiple energy-emitting devices;

[0034] The processor is used to replace the energy transmitting device that transmits energy to the passive Bluetooth device when the receiving efficiency of the passive Bluetooth device is lower than a threshold.

[0035] The energy transmitting device and its control method provided in this application embodiment, as well as the passive Bluetooth system, change the relative position of the directional antenna and the receiver when the energy receiving efficiency of the receiver is lower than a threshold, so that the peak of the energy radiated by the directional antenna is closer to the receiver, thereby improving the receiving efficiency of the receiver and thus improving the energy transmission efficiency between the energy transmitting device and the passive Bluetooth device. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0038] Figure 1 This is a first flowchart illustrating the control method for an energy emission device provided in an embodiment of this application.

[0039] Figure 2 This is a second flowchart illustrating the control method for an energy emission device provided in an embodiment of this application.

[0040] Figure 3 This is a third flowchart illustrating the control method for an energy emission device provided in an embodiment of this application.

[0041] Figure 4 This is a schematic diagram of a first structure of an energy emission device provided in an embodiment of this application.

[0042] Figure 5 for Figure 4 The diagram shows the structure of the drive mechanism in the energy emission device.

[0043] Figure 6 This is a second structural schematic diagram of the energy emission device provided in the embodiments of this application.

[0044] Figure 7 This is a schematic diagram of a first structure of a passive Bluetooth system provided in an embodiment of this application.

[0045] Figure 8 This is a schematic diagram of the structure of a passive Bluetooth device provided in an embodiment of this application.

[0046] Figure 9 This is a schematic diagram of a second structure of the passive Bluetooth system provided in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] To improve the energy transfer efficiency between the energy transmitting device and the passive Bluetooth device, this application provides an energy transmitting device and its control method, as well as a passive Bluetooth system, which will be described below with reference to the accompanying drawings.

[0049] See Figure 1 , Figure 1 This is a first flowchart illustrating a control method for an energy emission device provided in an embodiment of this application. The embodiment of this application provides a control method for an energy emission device, which includes:

[0050] 101. If a receiver receives energy emitted by the energy transmitting device, then obtain the receiver's receiving efficiency.

[0051] The energy transmitting device can include a radio frequency circuit and a directional antenna. The radio frequency circuit and the directional antenna work together to radiate energy outward. The energy radiated by the energy transmitting device can be stored and used by an external passive Bluetooth device. Thus, the passive Bluetooth device does not need an external power supply or a battery, which can save energy waste and facilitate the installation and portability of the passive Bluetooth device.

[0052] It's important to note that passive Bluetooth devices can transmit energy or data to energy-generating devices via Bluetooth antennas. The principle of a Bluetooth antenna is based on the propagation and reception of electromagnetic waves. Electromagnetic waves are wave phenomena generated by alternating electric and magnetic fields, and they can propagate through the air. Bluetooth antennas utilize the propagation characteristics of electromagnetic waves to convert radio signals into electromagnetic wave signals, which then propagate through the air to the receiving end. Therefore, energy can be characterized by electrical signals such as voltage, current, and power, or by magnetic flux. Specifically, the maximum effective transmission distance for energy transmission using a Bluetooth antenna is between 3 and 10 meters; the maximum communication distance for data transmission is between 10 and 100 meters, with significant variations depending on the application scenario.

[0053] In related technologies, the energy transmission efficiency between energy transmitting devices and passive Bluetooth devices is poor. For example, if the directional antenna of the energy transmitting device is not aligned with the receiver before energy transmission, the energy will be transmitted to the receiver at the trough, resulting in a decrease in the receiver's energy reception rate, which in turn affects the energy transmission efficiency.

[0054] In order to reduce the phenomenon of low energy transmission efficiency, the control scheme of the energy emission device has been improved in the embodiments of this application.

[0055] For example, if a receiver receives energy from an energy transmitting device, the receiver's receiving efficiency is obtained, and the energy transmission efficiency is determined based on the receiving efficiency, thereby enabling the adjustment of the directional antenna.

[0056] One way to obtain the receiver's reception efficiency is as follows: after the receiver is turned on, communication can be achieved by the receiver and antenna working together, and by the radio frequency circuit and directional antenna working together, to obtain the electrical signal received by the receiver, and the reception efficiency of the receiver can be determined based on the magnitude of the electrical signal.

[0057] 102. If the reception efficiency is lower than the threshold, adjust the directional antenna to change the relative position of the directional antenna and the receiver, and improve the reception efficiency of the receiver.

[0058] If the reception efficiency is below the threshold, it means that the receiver is not receiving energy efficiently, or that the peak position of the energy transmitted by the directional antenna is far from the receiver. Therefore, it is necessary to change the orientation of the directional antenna to bring the peak position of the energy transmitted by the directional antenna closer to the receiver, thereby improving the energy transmission efficiency.

[0059] For example, the directional antenna can be adjusted to change the relative position between the directional antenna and the receiver, thereby improving the receiver's reception efficiency. It is understood that a directional antenna is a type of antenna that radiates energy in a predetermined direction. When the directional antenna's orientation deviates from or faces away from the receiver, the peak of the radiated energy will be farther from the receiver, affecting energy transmission efficiency. Therefore, in this embodiment, when the receiver's reception efficiency is low, the directional antenna is adjusted to change the relative position between the directional antenna and the receiver, so that the peak of the radiated energy is closer to the receiver, thereby improving the receiver's reception efficiency.

[0060] In the control method of the energy transmitting device provided in this application embodiment, when the energy receiving efficiency of the receiver is lower than a threshold, the relative position of the directional antenna and the receiver is changed so that the peak of the energy radiated by the directional antenna is closer to the receiver, thereby improving the receiving efficiency of the receiver and thus improving the energy transmission efficiency between the energy transmitting device and the passive Bluetooth device.

[0061] Please see Figure 2 , Figure 2 This is a second flowchart illustrating the control method for an energy emission device provided in an embodiment of this application. This application also provides a control method for an energy emission device, including:

[0062] 201. Obtain the position information of the receiver relative to the energy transmitting device.

[0063] To improve energy transmission efficiency, this application embodiment will adjust the relative position of the directional antenna and the receiver in the energy transmitting device, such as turning it toward or aligning it with the receiver before transmitting energy, which can increase the energy received by the receiver and thus improve energy transmission efficiency.

[0064] Obtaining the position information of the receiver relative to the energy transmitting device provides a basis for adjusting the directional antenna, thereby facilitating coarse adjustments to the directional antenna, such as orienting the directional antenna toward the receiver.

[0065] There are several ways to obtain the location information of the receiver relative to the energy transmitting device.

[0066] For example, the position information of the receiver relative to the energy transmitting device can be obtained by acquiring the user's instructions. That is, the user inputs the position information of the receiver into the energy transmitting device, and the energy transmitting device calculates the relative position of the energy transmitting device and the receiver based on the position information of the receiver and its own position information.

[0067] For example, the location of a receiver can be determined using multiple energy transmitting devices. For instance, three energy transmitting devices, such as a first, second, and third energy transmitting device, can be used to locate the receiver. These devices each transmit signals towards the same receiver. The first time the receiver receives the first energy emitted by the first energy transmitting device, the second time it receives the second energy emitted by the second energy transmitting device, and the third time it receives the third energy emitted by the third energy transmitting device are recorded. Based on the first energy and the first time, a first distance between the first energy transmitting device and the receiver is calculated. Similarly, a second distance is calculated based on the second energy and the second time, and a third distance is calculated based on the third energy and the third time. Based on these three distances, the receiver's location in space can be determined.

[0068] Of course, there are other ways to obtain the receiver's location information. The above are just examples and should not be construed as a limitation on obtaining the receiver's location information.

[0069] 202. Adjust the directional antenna according to the location information so that the directional antenna is oriented towards the receiver.

[0070] If the directional antenna is not aligned with the receiver, or is not facing the receiver, most of the energy radiated by the directional antenna will not be received by the receiver, resulting in energy waste and reduced energy transmission efficiency.

[0071] Therefore, in order to reduce energy waste and increase the energy received by the receiver, the directional antenna can be adjusted based on the obtained position information of the receiver relative to the energy transmitting device. For example, the directional antenna can be rotated so that it faces the receiver, so that the receiver can receive most of the energy radiated by the directional antenna, reducing energy waste and increasing the energy received by the receiver, thereby improving energy transmission efficiency.

[0072] It should be noted that adjusting the directional antenna at this time is a coarse adjustment, that is, adjusting it from a position that is not facing the receiver to a position that faces the receiver. This can increase the amount and probability of the receiver receiving energy, thereby improving the energy transmission efficiency between the transmitter and the receiver.

[0073] In the control method of the energy transmitting device provided in this application embodiment, the directional antenna in the energy transmitting device is adjusted according to the relative position information between the receiver and the energy transmitting device, so that the directional antenna is oriented towards the receiver, thereby reducing the waste of energy radiated by the energy transmitting device through the directional antenna, reducing the distance between the receiver and the peak of the radiated energy, thereby increasing the energy received by the receiver and improving the energy transmission efficiency between the receiver and the energy transmitting device.

[0074] It should be noted that since the receiver requires power to start, the acquisition of the receiver signal described above occurs after the receiver has started. Receiver startup, or power supply, can also be achieved through energy transmission via a directional antenna and radio frequency circuitry. In this case, the direction of the directional antenna is not important; the receiver only needs to acquire a certain amount of energy to start, thus facilitating subsequent operations.

[0075] In some embodiments, the energy transmitting device may further include an omnidirectional antenna, and radio frequency circuitry may cooperate with the omnidirectional antenna to transmit energy, with a receiver receiving the energy and activating it. After the receiver is activated, the position of the directional antenna can be adjusted by communicating with the receiver, thereby directing the energy transmission direction of the directional antenna toward the receiver, thus improving energy transmission efficiency.

[0076] Please combine Figure 1 and Figure 2 And see Figure 3 , Figure 3 This is a third flowchart illustrating the control method for an energy emission device provided in an embodiment of this application. An embodiment of this application also provides a control method for an energy emission device, including:

[0077] 301. Adjust the directional antenna to change its position relative to the receiver, and obtain the receiver's reception efficiency when the directional antenna is in each position.

[0078] It is possible to obtain the receiver's reception efficiency when the directional antenna is in various positions, and then determine the position of the directional antenna with the highest reception efficiency based on the reception efficiency at each position. For example, the directional antenna can be adjusted, such as controlling the directional antenna to rotate according to a preset rule, to change the position of the directional antenna relative to the receiver, and the receiver's reception efficiency at each position can be obtained.

[0079] Among them, preset rules include rotating the directional antenna by a first preset angle along the circumference each time, and rotating it by a second preset angle from top to bottom or from bottom to top at each first preset angle, thereby obtaining multiple positions of the directional antenna relative to the receiver.

[0080] To obtain the receiver's reception efficiency when the directional antenna is in various positions, for example, after the receiver is turned on, the receiver can communicate with the antenna and the radio frequency circuit with the directional antenna to obtain the electrical signal received by the receiver, and the reception efficiency of the receiver can be determined based on the electrical signal at each position.

[0081] 302. Determine the target location with the highest receiver reception efficiency based on the reception efficiency of each location.

[0082] After obtaining the reception efficiency at each location, we can compare the reception efficiency at each location and determine the target location with the highest reception efficiency.

[0083] For example, the energy transmitting device may include a controller. The controller is used to acquire the receiver's reception efficiency when the directional antenna is in various positions. For instance, it acquires the first reception efficiency when the directional antenna is in a first position, and the second reception efficiency when the directional antenna is in a second position. If the second reception efficiency is greater than the first reception efficiency, then the second reception efficiency is taken as the highest reception efficiency, and the second position is taken as the target position. If the second reception efficiency is less than or equal to the first reception efficiency, then the first reception efficiency is taken as the highest reception efficiency, and the first position is taken as the target position. Similarly, it acquires the third reception efficiency when the directional antenna is in a third position, compares the third reception efficiency with the current highest reception efficiency, and if the third reception efficiency is greater than the current highest reception efficiency, then the third reception efficiency is taken as the highest reception efficiency, and the third position is taken as the target position. Otherwise, the current highest reception efficiency is still taken as the highest reception efficiency.

[0084] 303. Adjust the directional antenna to the target position and transmit energy to the receiver through the directional antenna.

[0085] Once the target location is determined, the directional antenna can be precisely adjusted to the target location. At this point, the directional antenna can be aligned with the receiver, and energy can be transmitted to the receiver through the directional antenna, resulting in high energy transmission efficiency.

[0086] It should be noted that the embodiments of this application can either directly and precisely adjust the position of the directional antenna, or perform a coarse adjustment of the directional antenna's position followed by a precise adjustment. This allows the peak of the directional antenna's radiated energy to be closer to the receiver, enabling the receiver to receive the maximum energy and thereby improving the energy transmission efficiency between the receiver and the energy transmitting device.

[0087] In the control method of the energy transmitting device provided in this application embodiment, the target position is determined based on the receiver receiving efficiency, and the directional antenna is adjusted to the target position so that the directional antenna is aligned with the receiver. This allows the peak of the energy radiated by the directional antenna to be close to the receiver, maximizing the energy received by the receiver and reducing energy waste. This improves the energy transmission efficiency between the energy transmitting device and the receiver.

[0088] After adjusting the directional antenna to the target position, the receiver's reception efficiency can be obtained. That is, the reception efficiency of the receiver after adjusting the directional antenna to the target position can be obtained. If the reception efficiency is still lower than the threshold, it indicates that the distance to the receiver may be too far. In this case, the transmission power of the directional antenna can be increased to compensate for the low reception efficiency caused by the long distance.

[0089] It should be noted that if the receiver's reception efficiency remains unchanged after increasing the transmission power of the directional antenna, it indicates that the distance between the energy transmitting device and the receiver exceeds the energy transmission distance, and the energy transmitting device can be replaced.

[0090] To more clearly illustrate the adjustment method of the directional antenna in the embodiments of this application, the embodiments of this application also provide an energy transmitting device, which will be described below in conjunction with the accompanying drawings.

[0091] Please see Figure 4 , Figure 4 This is a schematic diagram of a first structure of an energy transmitting device provided in an embodiment of this application. The embodiment of this application provides an energy transmitting device 2, which includes a radio frequency circuit 200, a directional antenna 210, a controller 220, and a drive mechanism 230.

[0092] Radio frequency (RF) circuit 200 refers to a circuit whose electromagnetic wavelength of the output signal is on the same order of magnitude as the circuit itself. RF circuit 200 is an analog circuit that operates within a set frequency range. Common RF circuits include: low-noise amplifiers, power amplifiers, oscillators, mixers, filters, switches, and transceivers.

[0093] The directional antenna 210 is an antenna that radiates energy in a predetermined direction. The directional antenna 210 is connected to the radio frequency circuit 200, and the directional antenna 210 and the radio frequency circuit 200 work together to transmit energy.

[0094] The controller 220 can be the control center of the energy transmitting device 2. The controller 220 is used for processing and calculating various signals. The controller 220 is connected to the radio frequency circuit 200 and the directional antenna 210 to obtain the receiving efficiency of the receiver.

[0095] The drive mechanism 230 is used to drive the directional antenna 210 to rotate. The drive mechanism 230 is connected to the controller 220. The drive mechanism 230 is used to adjust the relative position of the directional antenna 210 and the receiver according to the control signal of the controller 220, so as to improve the receiving efficiency of the receiver.

[0096] In the energy transmitting device 2 provided in this application embodiment, the relative position of the directional antenna 210 and the receiver is adjusted according to the control signal of the controller 220 so that the directional antenna 210 is aligned with the receiver, thereby improving the receiving efficiency of the receiver.

[0097] For example, please refer to Figure 4 And see Figure 5 As shown, Figure 5 for Figure 4 The diagram shows the structure of the drive mechanism in the energy transmitting device. The drive mechanism 230 includes a base 231, a rotating component 232, and a motor 233. The base 231 is used to install the energy transmitting device 2 in a preset position. The rotating component 232 is rotatably connected to the base 231, and the directional antenna 210 is fixed to the rotating component 232. The motor 233 is electrically connected to the controller 220 and is also connected to the rotating component 232. Under the control of the controller 220, the motor 233 drives the rotating component 232 to rotate, thereby rotating the directional antenna 210 to change the relative position between the directional antenna 210 and the receiver. This allows the directional antenna 210 to face or be aligned with the receiver, thereby improving the energy receiving efficiency of the receiver.

[0098] For example, please refer to Figure 4 and Figure 5 And see Figure 6 As shown, Figure 6 This is a second structural schematic diagram of the energy transmitting device provided in an embodiment of this application. The energy transmitting device 2 also includes an omnidirectional antenna 240, which is connected to the radio frequency circuit 200. The omnidirectional antenna 240 is used to cooperate with the radio frequency circuit 200 to transmit energy in multiple directions to activate the receiver. That is, the energy transmitting device 2 uses the omnidirectional antenna 240 to radiate energy to activate the receiver. After the receiver is activated, the directional antenna 210 is used to efficiently transmit energy to the receiver.

[0099] Please see Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of a first structure of the passive Bluetooth system provided in an embodiment of this application. Figure 8 This is a schematic diagram of the structure of a passive Bluetooth device provided in an embodiment of this application. This application also provides a passive Bluetooth system 1000, which may include a passive Bluetooth device 1 and an energy transmitting device 2. The energy transmitting device 2 can be referred to... Figures 1 to 4The above explanation will not be repeated here. A passive Bluetooth device 1 is a device that does not have a power source but obtains energy through Bluetooth to power its load, thus enabling it to perform preset functions. For example, a passive Bluetooth device 1 includes a receiver 100 and a first antenna 120. The receiver 100 and the first antenna 120 are connected, and the receiver 100 and the first antenna 120 cooperate to obtain energy from the energy transmitting device 2.

[0100] The passive Bluetooth device 1 is used to adjust the position of the directional antenna 210 in the energy transmitting device 2 according to the receiving efficiency of the energy obtained from the energy transmitting device 2, so that the directional antenna 210 is aligned with the receiver 100 in the passive Bluetooth device 1, so that the peak of the energy transmitted by the energy transmitting device 2 is close to or toward the receiver 100, thereby improving the energy transmission efficiency between the passive Bluetooth device 1 and the energy transmitting device 2.

[0101] For example, please refer to Figures 4 to 8 And see Figure 9 As shown, Figure 9 This is a schematic diagram of a second structure of the passive Bluetooth system provided in this application embodiment. The passive Bluetooth system 1000 includes a processor 3 and multiple energy transmitting devices 2. The processor 3 is used to replace the energy transmitting device 2 that transmits energy to the passive Bluetooth device 1 when the receiving efficiency of the passive Bluetooth device 1 is lower than a threshold. It can be understood that since the receiving efficiency of the passive Bluetooth device 1 is low, further, after adjusting the directional antenna 210 in the energy transmitting device 2 to the target position, if the receiving efficiency of the receiver 100 is still lower than the threshold, it indicates that the distance between this energy transmitting device 2 and the receiver 100 is too far. Another energy transmitting device 2 that is closer to the receiver 100 can be selected for replacement, and the position of the directional antenna 210 in the other energy transmitting device 2 can be adjusted to determine whether the energy transmission efficiency between the receiver 100 and the other energy transmitting device 2 can be improved.

[0102] The energy transmitting device and its control method provided in this application embodiment, as well as the passive Bluetooth system, adjust the position of the directional antenna in the energy transmitting device according to the receiver's receiving efficiency, so that the directional antenna is aligned with the receiver. This allows the receiver to receive the peak of the energy transmitted by the directional antenna, that is, the receiver receives the maximum energy transmitted by the directional antenna. This improves the receiver's receiving efficiency and the energy transmission efficiency between the energy transmitting device and the receiver.

[0103] The passive Bluetooth chip, its processing method, and the passive Bluetooth system provided in this application embodiment allow the passive Bluetooth chip to select the target transmitter with the highest energy transfer efficiency from multiple energy transmitters. Therefore, it can quickly acquire energy from the target transmitter via an antenna, rather than directly acquiring energy regardless of energy transfer efficiency, thus improving energy transfer efficiency and consequently, the power supply efficiency to the passive Bluetooth chip. Multiple energy transmitters can respectively transfer energy to multiple passive Bluetooth devices, further improving the energy transfer efficiency of the passive Bluetooth system.

[0104] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0105] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0106] The energy emission device and its control method and passive Bluetooth system provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A control method for an energy emission device, characterized in that, The energy transmitting device is used to power a passive Bluetooth device, which does not require an external power source or a battery. The control method for the energy transmitting device includes: The energy transmitting device transmits energy through a radio frequency circuit in conjunction with an omnidirectional antenna to activate the receiver. The activation of the receiver does not require consideration of the direction of the directional antenna. After the receiver is activated, if a receiver receives the energy transmitted by the energy transmitting device, the receiving efficiency of the receiver is obtained. The receiving efficiency of the receiver is obtained by the following method: after the receiver is activated, communication is achieved through the receiver and the directional antenna. The energy transmitting device obtains the electrical signal received by the receiver, and the energy transmitting device determines the receiving efficiency of the receiver based on the magnitude of the electrical signal. If the receiving efficiency is lower than a threshold, the location information of the receiver is determined based on the multiple energy transmitting devices. The directional antenna is adjusted according to the location information so that it faces the receiver. After coarse adjustment of the directional antenna's position, fine adjustment is performed. The energy transmitting devices obtain the receiving efficiency of the receiver at each position of the directional antenna. Based on the receiving efficiency at each position, the energy transmitting devices determine the target position where the receiver has the highest receiving efficiency. The directional antenna is then adjusted to the target position so that the peak of the radiated energy from the directional antenna is close to the receiver. Energy is then transmitted to the receiver through the directional antenna, thereby improving the receiver's receiving efficiency.

2. The control method according to claim 1, characterized in that, After adjusting the directional antenna to the target position and transmitting energy to the receiver through the directional antenna, the control method further includes: Obtain the reception efficiency of the receiver after adjusting the directional antenna to the target position; If the receiving efficiency is still lower than the threshold, then the transmitting power of the directional antenna is increased.

3. An energy emission device, characterized in that, The energy transmitting device is used to power a passive Bluetooth device, which does not require an external power source or a battery. The energy transmitting device includes: Radio frequency circuits; A directional antenna is connected to the radio frequency circuit and works with the radio frequency circuit to transmit energy; A controller, connected to the radio frequency circuit and the directional antenna, is used to obtain the receiver's reception efficiency. The receiver's reception efficiency is obtained by the following method: after the receiver is started, communication is achieved through the receiver and the directional antenna. The energy transmitting device obtains the electrical signal received by the receiver, and the energy transmitting device determines the receiver's reception efficiency based on the magnitude of the electrical signal. An omnidirectional antenna is connected to the radio frequency circuit. The omnidirectional antenna is used to cooperate with the radio frequency circuit to emit energy in multiple directions to activate the receiver and locate the position information of the receiver based on the multiple energy emitting devices. A drive mechanism, connected to the controller, adjusts the directional antenna according to the position information so that the directional antenna faces the receiver. After coarse adjustment of the directional antenna's position, fine adjustment is then performed. The energy transmitting device acquires the receiver's reception efficiency at each position of the directional antenna. Based on the reception efficiency at each position, the energy transmitting device determines the target position where the receiver has the highest reception efficiency, adjusts the directional antenna to the target position, so that the peak of the directional antenna's radiated energy is close to the receiver, and transmits energy to the receiver through the directional antenna to improve the receiver's reception efficiency.

4. The energy emission device according to claim 3, characterized in that, The drive mechanism includes: A base for mounting the energy emission device at a preset position; A rotating component is rotatably connected to the base, and the directional antenna is fixed to the rotating component; The motor is electrically connected to the controller and to the rotating component, and the motor is used to drive the rotating component to rotate under the control of the controller.

5. A passive Bluetooth system, characterized in that, include: The energy emission device as described in any one of claims 3-4; A passive Bluetooth device includes a receiver and a first antenna, the first antenna cooperating with the receiver to obtain energy from the energy transmitting device.

6. The passive Bluetooth system according to claim 5, characterized in that, The passive Bluetooth device is used to adjust the position of the directional antenna in the energy transmitting device according to the receiving efficiency of the energy obtained from the energy transmitting device.

7. The passive Bluetooth system according to claim 6, characterized in that, The passive Bluetooth system includes a processor and multiple energy-emitting devices; The processor is used to replace the energy transmitting device that transmits energy to the passive Bluetooth device when the receiving efficiency of the passive Bluetooth device is lower than a threshold.

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