CN112040467B - Low-radiation power-saving Bluetooth system and method - Google Patents
Low-radiation power-saving Bluetooth system and method Download PDFInfo
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- CN112040467B CN112040467B CN202010949496.2A CN202010949496A CN112040467B CN 112040467 B CN112040467 B CN 112040467B CN 202010949496 A CN202010949496 A CN 202010949496A CN 112040467 B CN112040467 B CN 112040467B
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- 238000001514 detection method Methods 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 6
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- 210000004556 brain Anatomy 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 230000005865 ionizing radiation Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The invention relates to the technical field of Bluetooth communication, in particular to a low-radiation power-saving Bluetooth system and a method, wherein the method comprises the following steps of S100: establishing a communication link between the first wireless device and the second wireless device; s200: n beam directions of the first wireless device and M beam directions of the second wireless device can form a total of n×m beam combinations, each beam combination is scanned in sequence, and corresponding signal intensity is recorded; s300: calculating the radiation intensity of each beam combination to the human body; s400: calculating the comprehensive quality value of each beam combination according to the radiation intensity and the corresponding signal intensity of each beam combination; s500: sequencing the beam combinations according to the comprehensive quality values, and selecting the beam combination with the largest comprehensive quality value as the optimal beam combination; s600: the beam antennas are adjusted according to the optimal beam combinations. The low-radiation power-saving Bluetooth system and the method can reduce the power consumption of the equipment and the radiation to the human body, and increase the service time of the equipment.
Description
Technical Field
The invention relates to the technical field of Bluetooth communication, in particular to a low-radiation power-saving Bluetooth system and method.
Background
With the rapid development of the true wireless bluetooth headset market, more and more consumers choose to wear the bluetooth headset to carry out voice conversation, play music and the like. These bluetooth headset all adopt the in-ear wearing, need carry out bluetooth signal transmission between the left and right sides ear, because the block of people's head, signal transmission can have great loss. In order to ensure that the bluetooth communication of the left and right earphone is performed normally, the bluetooth signal transmitter needs to use a larger transmitting power. In the production process of wireless earphone, some manufacturers often adjust the bluetooth transmitting power to the maximum in order to ensure that the earphone has better communication quality under the above conditions. Because the left earphone and the right earphone are deeply inserted into the auditory canal and are close to the brain, the electromagnetic signals of communication can pass through the head of a person, and the electromagnetic radiation to the human body can be greatly increased.
There are medical professionals currently who have proposed the problem that bluetooth headsets may be carcinogenic. The union of 250 scientists initiated a petition to the world health organization in 2015 claiming that "the non-ionizing radiation used in bluetooth transmissions would be incident to the human brain with a risk of carcinogenesis". The international cancer research institution confirms that non-ionizing radiation can pose a "carcinogenic" risk to humans, and that prolonged exposure to electromagnetic fields can result in conditions including genetic damage, neurological disorders, and the like.
Besides causing larger electromagnetic radiation, the large transmitting power also brings larger battery consumption, and the working time of the Bluetooth headset is reduced.
Disclosure of Invention
The invention aims to provide a low-radiation power-saving method and a low-radiation power-saving Bluetooth system, which can reduce the radiation of wireless equipment to human bodies, reduce power consumption and increase the service life of the equipment.
The application provides the following technical scheme:
a low-emissivity power saving method comprising:
s100: establishing a communication link between the first wireless device and the second wireless device;
s200: one of the first wireless device and the second wireless device is used as a transmitting device, and the other is used as a receiving device to perform beam scanning; n beam directions of the first wireless device and M beam directions of the second wireless device can form a total of n×m beam combinations, each beam combination is scanned in sequence, and signal intensity corresponding to each beam combination is recorded;
s300: calculating the radiation intensity of each beam combination to the human body according to the scanning result;
s400: calculating the comprehensive quality value of each beam combination according to the radiation intensity and the corresponding signal intensity of each beam combination;
s500: sequencing the beam combinations according to the comprehensive quality values, and selecting the beam combination with the largest comprehensive quality value as the optimal beam combination;
s600: the first wireless device and the second wireless device adjust the beam antennas according to the optimal beam combination.
Further, the radiation intensity of each beam combination to the human body is calculated according to the following formula:
in the formula: e (E) i The radiation intensity born by the human body when the wave beam combination i is adopted for the antenna; p (P) o Transmitting the total power for the transmitting device; g i The ratio of the radiation power born by the human body to the total transmission power when the beam combination i is adopted for the antenna; d is the distance from the transmitting device to the center of the human body.
Further, the composite quality value of the beam combination is calculated according to the following formula:
wherein Q is i A composite quality value for beam combination i; e (E) th Is the human body radiation exceeding threshold value E i For the radiation intensity of beam combination i to the human body,representing the radiation safety value of the human body; s is S th For the power value corresponding to the channel sensitivity, si is the signal strength corresponding to the beam combination i, +.>Representing the received signal quality value.
Further, the method further comprises the following steps: s700: continuously monitoring the signal intensity, and if the signal intensity exceeds the preset range, re-executing S200 to S600.
Further, the first wireless device and the second wireless device are wireless headphones.
Further, the method further comprises the following steps: s800: recording an optimal beam combination; s200 to S600 are also performed before:
s105: judging whether an optimal beam combination is recorded, if so, executing S106; if not, executing S200 to S600;
s106: judging whether the signal intensity of the recorded optimal beam combination is in a preset range, if so, directly using the recorded optimal beam combination to communicate by the first wireless device and the second wireless device; if not, S200 to S600 are performed.
Further, the method further comprises the following steps: s900: the first wireless device or the second wireless device communicates with the third wireless device by switching the beam direction or setting the beam direction as an omni-directional antenna, and after the communication is finished, the beam direction is switched back to the original beam direction.
Furthermore, the invention also discloses a low-radiation power-saving Bluetooth system, which uses the low-radiation power-saving method.
Further, the antenna control system comprises a first Bluetooth device and a second Bluetooth device, wherein the first Bluetooth device and the second Bluetooth device are respectively provided with an adjustable beam antenna, an antenna searching module, an antenna selecting module and an antenna control module; the first Bluetooth device and the second Bluetooth device are connected through Bluetooth; the antenna searching module is used for scanning and recording the beam combinations, the antenna selecting module is used for selecting the optimal beam combinations, and the antenna control module is used for setting the beam directions of the adjustable beam antennas according to the selected optimal beam combinations.
Further, the first bluetooth device and the second bluetooth device further comprise a use detection module, the use detection module is used for judging whether the first bluetooth device and the second bluetooth device are in a use state, and the first bluetooth device and the second bluetooth device are used for establishing bluetooth connection after detecting that the first bluetooth device and the second bluetooth device are in the use state.
The technical scheme of the invention has the beneficial effects that:
according to the technical scheme, when the Bluetooth equipment receives and transmits data, the adjustable beam antenna is arranged, the data under each beam combination is obtained through beam scanning, the radiation intensity and the signal intensity of a human body are calculated according to the beam direction of the beam combination and the data recorded during scanning, the comprehensive quality value is calculated according to the radiation intensity and the signal intensity, the beam combination with the largest comprehensive quality data is selected as the optimal beam combination, and the optimal beam combination is selected, so that the requirements of communication signal intensity can be met, the radiation to the human body can be reduced, the power consumption can be reduced, and the working time of the equipment can be prolonged.
And the Bluetooth equipment can readjust the antenna beam according to the signal intensity change, so that the optimal beam combination is maintained between the equipment, and the Bluetooth equipment has strong environment self-adaption capability. The beam searching and selecting process can be simplified by recording the optimal beam combination, and the equipment working cost is saved.
The wireless device may be connected to the other wireless device and the third wireless device by switching the antenna beam, and in particular to the bluetooth headset, which may be connected to the handset and the other headset by switching the antenna beam.
Drawings
FIG. 1 is a flow chart of a low-radiation power saving method according to a first embodiment of the present application;
FIG. 2 is a flow chart of a second embodiment of a low-radiation power saving method of the present application;
fig. 3 is a logic block diagram of a bluetooth headset in an embodiment of the present application.
Detailed Description
The technical scheme of the application is further described in detail through the following specific embodiments:
examples
As shown in fig. 1, the embodiment discloses a low-radiation power saving method, which includes the following steps:
s100: establishing a communication link between the first wireless device and the second wireless device; in this embodiment, the method is applied to a bluetooth headset, and the first wireless device and the second wireless device are both wireless bluetooth headsets. In other embodiments of the present application, the low-radiation power saving method of the present embodiment may also be applied to other wireless communication line systems.
S200: one of the first wireless device and the second wireless device is used as a transmitting device, and the other is used as a receiving device to perform beam scanning; the N beam directions of the first wireless device and the M beam directions of the second wireless device can form a total of n×m beam combinations, each beam combination is scanned in turn, and the signal intensity corresponding to each beam combination is recorded.
S300: calculating the radiation intensity of each beam combination to the human body according to the scanning result; specifically, the radiation intensity of each beam combination to the human body is calculated according to the following formula:
in the formula: e (E) i The radiation intensity born by the human body when the wave beam combination i is adopted for the antenna; p (P) o Transmitting the total power for the transmitting device; g i The ratio of the radiation power born by the human body to the total transmission power when the beam combination i is adopted for the antenna; d is the distance from the transmitting device to the center of the human body.
S400: calculating the comprehensive quality value of each beam combination according to the radiation intensity and the corresponding signal intensity of each beam combination; calculating the composite quality value of the beam combination according to the following formula:
wherein Q is i A composite quality value for beam combination i; e (E) th Is the human body radiation exceeding threshold value E i For the radiation intensity of beam combination i to the human body,representing the radiation safety value of the human body; s is S th For the power value corresponding to the channel sensitivity, si is the signal strength corresponding to the beam combination i, +.>Representing the received signal quality value.
S500: and sorting the beam combinations according to the comprehensive quality values, and selecting the beam combination with the largest comprehensive quality value as the optimal beam combination.
S600: the first wireless device and the second wireless device adjust the beam antennas according to the optimal beam combination.
S700: continuously monitoring the signal intensity, and if the signal intensity exceeds the preset range, re-executing S200 to S600
In this embodiment, the method further includes an in-ear detection step, where the two bluetooth headsets determine whether the headset is in-ear according to the signal of the in-ear detection sensor, if yes, S100 is executed to establish bluetooth connection, and if not, the in-ear detection step is repeated.
As shown in fig. 3, the present embodiment also discloses a low-radiation power-saving bluetooth system, which uses the low-radiation power-saving method.
Specifically, the system includes a first bluetooth device and a second bluetooth device, and in this embodiment, the first bluetooth device and the second bluetooth device are both bluetooth headsets. The first Bluetooth device and the second Bluetooth device are respectively provided with an adjustable beam antenna and a controller, and the controller comprises an antenna searching module, an antenna selecting module and an antenna control module; the first Bluetooth device and the second Bluetooth device are connected through Bluetooth; the antenna searching module is used for scanning and recording the beam combinations, the antenna selecting module is used for selecting the optimal beam combinations, and the antenna control module is used for setting the beam directions of the adjustable beam antennas according to the selected optimal beam combinations.
The first Bluetooth device and the second Bluetooth device further comprise a use detection module, the use detection module is used for judging whether the first Bluetooth device and the second Bluetooth device are in a use state, and the first Bluetooth device and the second Bluetooth device are used for establishing Bluetooth connection after detecting that the first Bluetooth device and the second Bluetooth device are in the use state. Specifically, in this implementation, the use detection module is an in-ear detection sensor, and it detects whether the earphone is in the ear through infrared principle, and then judges whether the earphone is being used, and after the earphone is in the ear, two bluetooth headset establish bluetooth connection.
Example two
As shown in fig. 2, the difference between the present embodiment and the first embodiment is that, in this embodiment, in order to avoid that the beam scanning and selection are performed again each time the earphone is started, the method further includes: s800: the optimal beam combination is recorded. While also executing before executing S200 to S600:
s105: judging whether an optimal beam combination is recorded, if so, executing S106; if not, executing S200 to S600;
s106: judging whether the signal intensity of the recorded optimal beam combination is in a preset range, if so, directly using the recorded optimal beam combination to communicate by the first wireless device and the second wireless device; if not, S200 to S600 are performed.
Example III
The difference between the present embodiment and the first embodiment is that in the present embodiment, the method further includes: s900: the first wireless device or the second wireless device communicates with the third wireless device by switching the beam direction or setting the beam direction as an omni-directional antenna, and after the communication is finished, the beam direction is switched back to the original beam direction.
In this embodiment, the third wireless device refers to a user mobile phone, one of the two wireless bluetooth headsets is a master headset, the other one is a slave headset, and the master headset may need to communicate with the mobile phone while communicating with the slave headset. In other embodiments of the present application, the master earphone and the mobile phone may perform scanning and optimization of a beam combination according to the flow of S200 to S600, and record the scanning and optimization, and then switch to the optimal beam direction between the master earphone and the mobile phone when communicating with the mobile phone, and after the communication is finished, need to communicate with the slave earphone, and switch to the optimal beam direction between the master earphone and the slave earphone.
The foregoing is merely an embodiment of the present invention, the present invention is not limited to the field of this embodiment, and the specific structures and features well known in the schemes are not described in any way herein, so that those skilled in the art will know all the prior art in the field before the application date or priority date, and will have the capability of applying the conventional experimental means before the date, and those skilled in the art may, in light of the teaching of this application, complete and implement this scheme in combination with their own capabilities, and some typical known structures or known methods should not be an obstacle for those skilled in the art to practice this application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. A low-emissivity power saving method, characterized by: comprising the following steps:
s100: establishing a communication link between the first wireless device and the second wireless device;
s200: one of the first wireless device and the second wireless device is used as a transmitting device, and the other is used as a receiving device to perform beam scanning; n beam directions of the first wireless device and M beam directions of the second wireless device can form a total of n×m beam combinations, each beam combination is scanned in sequence, and signal intensity corresponding to each beam combination is recorded;
s300: calculating the radiation intensity of each beam combination to the human body according to the scanning result;
s400: calculating the comprehensive quality value of each beam combination according to the radiation intensity and the corresponding signal intensity of each beam combination; calculating the composite quality value of the beam combination according to the following formula:
wherein Q is i A composite quality value for beam combination i; e (E) th Is the human body radiation exceeding threshold value E i For the radiation intensity of beam combination i to the human body,representing the radiation safety value of the human body; s is S th For the power value corresponding to the channel sensitivity, si is the signal strength corresponding to the beam combination i, +.>Representing a received signal quality value;
s500: sequencing the beam combinations according to the comprehensive quality values, and selecting the beam combination with the largest comprehensive quality value as the optimal beam combination;
s600: the first wireless device and the second wireless device adjust the beam antennas according to the optimal beam combination.
2. A low-emissivity, power-saving method of claim 1, wherein: the radiation intensity of each beam combination to the human body is calculated according to the following formula:
in the formula: e (E) i The radiation intensity born by the human body when the wave beam combination i is adopted for the antenna; p (P) o Transmitting the total power for the transmitting device; g i The ratio of the radiation power born by the human body to the total transmission power when the beam combination i is adopted for the antenna; d is the distance from the transmitting device to the center of the human body.
3. A low-emissivity, power-saving method of claim 1, wherein: further comprises: s700: continuously monitoring the signal intensity, and if the signal intensity exceeds the preset range, re-executing S200 to S600.
4. A low-emissivity, power-saving method of claim 1, wherein: the first wireless device and the second wireless device are wireless headphones.
5. A low-emissivity, power-saving method of claim 1, wherein: further comprises: s800: recording an optimal beam combination; s200 to S600 are also performed before:
s105: judging whether an optimal beam combination is recorded, if so, executing S106; if not, executing S200 to S600;
s106: judging whether the signal intensity of the recorded optimal beam combination is in a preset range, if so, directly using the recorded optimal beam combination to communicate by the first wireless device and the second wireless device; if not, S200 to S600 are performed.
6. A low-emissivity, power-saving method of claim 1, wherein: further comprises: s900: the first wireless device or the second wireless device communicates with the third wireless device by switching the beam direction or setting the beam direction as an omni-directional antenna, and after the communication is finished, the beam direction is switched back to the original beam direction.
7. A low-emissivity, power-saving bluetooth system, characterized by: use of a low-emissivity power saving method according to any one of claims 1-6.
8. The low-emissivity, power-saving bluetooth system of claim 7, wherein: the antenna control system comprises a first Bluetooth device and a second Bluetooth device, wherein the first Bluetooth device and the second Bluetooth device are respectively provided with an adjustable beam antenna, an antenna searching module, an antenna selecting module and an antenna control module; the first Bluetooth device and the second Bluetooth device are connected through Bluetooth; the antenna searching module is used for scanning and recording the beam combinations, the antenna selecting module is used for selecting the optimal beam combinations, and the antenna control module is used for setting the beam directions of the adjustable beam antennas according to the selected optimal beam combinations.
9. The low-emissivity, power-saving bluetooth system of claim 8, wherein: the first Bluetooth device and the second Bluetooth device further comprise a use detection module, the use detection module is used for judging whether the first Bluetooth device and the second Bluetooth device are in a use state, and the first Bluetooth device and the second Bluetooth device are used for establishing Bluetooth connection after detecting that the first Bluetooth device and the second Bluetooth device are in the use state.
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