CN102752681A - NFC (near field communication)-based Bluetooth headset and NFC-based Bluetooth communication method - Google Patents
NFC (near field communication)-based Bluetooth headset and NFC-based Bluetooth communication method Download PDFInfo
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- CN102752681A CN102752681A CN2012102018373A CN201210201837A CN102752681A CN 102752681 A CN102752681 A CN 102752681A CN 2012102018373 A CN2012102018373 A CN 2012102018373A CN 201210201837 A CN201210201837 A CN 201210201837A CN 102752681 A CN102752681 A CN 102752681A
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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
Abstract
The invention discloses an NFC (near field communication)-based Bluetooth headset and a NFC-based Bluetooth communication method. The NFC-based Bluetooth headset comprises a Bluetooth chip, a NFC module storing a Bluetooth chip address and a wake-up circuit arranged between the Bluetooth chip and the NFC module, wherein the NFC module is used for communicating with master equipment to provide the stored Bluetooth chip address to the master equipment when the master equipment approaches, and outputting an alternating current signal to the wake-up circuit; and the wake-up circuit is used for converting an alternating current signal outputted by the NFC module into a direct current pulse to be output to an input/output IO port of the Bluetooth chip to generate hardware interruption, so that the Bluetooth chip can be activated. According to the technical scheme of the invention, the slave equipment under the standby or sleep manner such as the Bluetooth headset and the like can be quickly activated, so that the quick Bluetooth pairing on the premise that the power consumption is reduced can be realized.
Description
Technical field
The present invention relates to technical field of bluetooth communication based on NFC, particularly a kind of based on NFC bluetooth earphone and based on the Bluetooth communication method of NFC.
Background technology
At present, the application of wireless near field communication (NFC, Near Field Communicayion) technology on bluetooth earphone is increasingly extensive, and it assists bluetooth module to realize quick pairing work mainly as a module.Its main work is referring to Fig. 1.
Fig. 1 is of the prior art based on the bluetooth earphone of NFC technology and the structural representation of main equipment.Referring to Fig. 1, main equipment (like mobile phone etc.) comprising: bluetooth module and NFC module; Bluetooth earphone (a kind of slave unit) comprising: NFC antenna, NFC module and Bluetooth chip.
The operation principle of the NFC module among Fig. 1 is: the NFC module in the bluetooth earphone is as a standalone module of bluetooth earphone, and storage inside has the address of corresponding Bluetooth chip.When main equipment during near bluetooth earphone NFC module, the electromagnetic field that provides through main equipment between the NFC module of main equipment and bluetooth earphone is accomplished communication.The NFC module of main equipment notifies the bluetooth module of main equipment and the Bluetooth chip of earphone to match from the address that the NFC module of bluetooth earphone is obtained Bluetooth chip then.
But existing bluetooth earphone generally is in (standby) pattern of awaiting orders or sleep (deep sleep) pattern in order to reduce power consumption after start, and under these two kinds of patterns, earphone can't carry out Bluetooth pairing.
So, must could realize under the situation of bluetooth module continuous firing that based on the Bluetooth pairing of NFC this power consumption to bluetooth earphone is had higher requirement.
Summary of the invention
In view of this; The invention provides a kind of based on NFC bluetooth earphone and based on the Bluetooth communication method of NFC; Technical scheme of the present invention make be in await orders or sleep pattern under can be activated fast like slave units such as bluetooth earphones, can under the prerequisite that reduces power consumption, realize quick Bluetooth pairing based on NFC.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of bluetooth earphone based on wireless near field communication NFC, this bluetooth earphone comprises: Bluetooth chip, preserve the NFC module of Bluetooth chip address and be arranged on Bluetooth chip and the NFC module between wake-up circuit; Wherein,
The NFC module, be used for main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment, simultaneously to wake-up circuit output AC signal;
Wake-up circuit, being used for NFC module output AC conversion of signals is the input and output IO mouth generation hardware interrupts that DC pulse outputs to Bluetooth chip, activates Bluetooth chip.
Said wake-up circuit is the detecting circuit of being made up of diode, resistance and electric capacity.
The positive pole of said diode is connected with the output of NFC module, and the negative pole of said diode is connected with an end of resistance, and the other end of resistance is connected with an end of electric capacity, the other end ground connection of electric capacity, and the end that resistance is connected with electric capacity is connected with the IO mouth of Bluetooth chip.
Said wake-up circuit also comprises a catching diode, and the positive pole of this catching diode connects with the end that resistance is connected with electric capacity, and the negative pole of this catching diode is connected with a power supply.
Said electric capacity is the electric capacity of microfarad uF level, and said resistance is kilohm resistance of K Ω level;
Said catching diode is a Schottky diode.
The invention also discloses a kind of Bluetooth communication method based on NFC, this method comprises:
NFC module in the slave unit, main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment in, to the wake-up circuit output AC signal of slave unit;
Said wake-up circuit is that the input and output IO mouth of the DC pulse Bluetooth chip that outputs to slave unit produces hardware interrupts with NFC module output AC conversion of signals, activates this Bluetooth chip.
The detecting circuit of said wake-up circuit for being made up of diode, resistance and electric capacity is set.
Said wake-up circuit is set to be comprised for the detecting circuit of being made up of diode, resistance and electric capacity: the positive pole that said diode is set is connected with the output of NFC module; The negative pole that said diode is set is connected with an end of resistance; The other end that resistance is set is connected with an end of electric capacity; The other end ground connection of electric capacity is set, the end that resistance is connected with electric capacity is set is connected with the IO mouth of Bluetooth chip.
This method further comprises: in wake-up circuit, increase a catching diode, the positive pole that this catching diode is set connects with the end that resistance is connected with electric capacity, and the negative pole that this catching diode is set is connected with a power supply.
The electric capacity of choosing microfarad uF level is chosen kilohm resistance of K Ω level as the said resistance in the wake-up circuit as the said electric capacity in the wake-up circuit;
Choose Schottky diode as said catching diode.
By above-mentioned visible, this NFC module of the present invention main equipment near the time Bluetooth chip address of communicating by letter with main equipment preservation offer main equipment, simultaneously to wake-up circuit output AC signal; Wake-up circuit; Being used for NFC module output AC conversion of signals is the input and output IO mouth generation hardware interrupts that DC pulse outputs to Bluetooth chip; Activate the technical scheme of Bluetooth chip; Make be in await orders or sleep pattern under can be activated fast like slave units such as bluetooth earphones, can under the prerequisite that reduces power consumption, realize quick Bluetooth pairing based on NFC.
Description of drawings
Fig. 1 is of the prior art based on the bluetooth earphone of NFC technology and the structural representation of main equipment;
Fig. 2 be in the embodiment of the invention based on the bluetooth earphone of NFC technology and the structural representation of main equipment;
Fig. 3 be the wake-up circuit in the embodiment of the invention structure with and the outside sketch map that connects;
Fig. 4 is the quick pairing flow chart based on the bluetooth earphone of NFC in the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Fig. 2 be in the embodiment of the invention based on the bluetooth earphone of NFC technology and the structural representation of main equipment.As shown in Figure 2, the main equipment structure does not change, but comprises Bluetooth chip and preserve outside the NFC module of Bluetooth chip address as the bluetooth earphone of slave unit, also comprises the wake-up circuit that is arranged between Bluetooth chip and the NFC module; Wherein,
The NFC module, be used for main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment, simultaneously to wake-up circuit output AC signal;
Wake-up circuit, being used for NFC module output AC conversion of signals is the input and output IO mouth generation hardware interrupts that DC pulse outputs to Bluetooth chip, activates Bluetooth chip, to wake the Bluetooth chip under the sleep state fast up.
Fig. 3 be the wake-up circuit in the embodiment of the invention structure with and the outside sketch map that connects.As shown in Figure 3, the wake-up circuit among the present invention is the detecting circuit of being made up of diode 1, resistance 2 and electric capacity 3.Wherein, The output of the positive pole of diode 1 and NFC module (be NFC chip 6 among Fig. 3, model is BCM20203) connects, and the negative pole of diode 1 is connected with an end of resistance 2; The other end of resistance 2 is connected with an end of electric capacity 3; The other end ground connection of electric capacity 3, the end that resistance 2 is connected with electric capacity 3 is connected with the IO mouth of Bluetooth chip, has only illustrated the IO mouth among Fig. 3.NFC chip 6 as the NFC module is connected with NFC antenna 7.
The selection of capacitance-resistance 3: in the detecting circuit, can adjust the time delay of pulse through the value that changes filter capacitor 3.In practical application, the selection of electric capacity must be interrupted the requirement of pulsewidth is decided according to Bluetooth chip.The general electric capacity of selecting microfarad uF level, concrete time-delay can be decided according to project demand.Since a little less than the communication of NFC module employing Passive Mode, driving force very, thus the resistance 2 general resistance of selecting kilohm k Ω levels, as selecting 100k Ω.
In addition, the amplitude of pulse changes with the distance of main equipment and earphone NFC module distance, can not damage Bluetooth chip IO mouth in order to guarantee pulse, adds clamped diode 4 at the IO mouth in the present invention and prevents that high impulse from puncturing Bluetooth chip.The positive pole of this catching diode 4 connects with the end that resistance is connected with electric capacity, and the negative pole of this catching diode is connected with a power supply VCC.Because the NFC carrier frequency is 13.56MHz, belongs to high-frequency signal, so the selection of catching diode 4 requires switching frequency high, first-selected Schottky diode, for example can select model in the present embodiment is 1PS10SB82, is encapsulated as the diode of S0D882.The value of the power supply that is connected with catching diode 4 will be taken all factors into consideration the voltage and the puncture voltage of the generation hardware interrupts of Bluetooth chip IO mouth, chooses 1.8V in an embodiment of the present invention.
Fig. 4 is the quick pairing flow chart based on the bluetooth earphone of NFC in the embodiment of the invention.As shown in Figure 4, after bluetooth earphone gets into sleep pattern, when main equipment during near the NFC module of bluetooth earphone; The NFC module of main equipment is from the address that the NFC module of earphone is obtained the earphone Bluetooth chip, and the NFC module of main equipment is passed to the bluetooth module of main equipment with earphone Bluetooth chip address, and main equipment gets into the Bluetooth pairing state; Simultaneously, in earpiece side, wake-up circuit produces high impulse and activates earphone entering pairing state, and main equipment and earphone just can carry out Bluetooth pairing fast like this.
Provide a kind of Bluetooth communication method based on NFC among the present invention based on the foregoing description, this method is applicable to and adopts between the main equipment and slave unit that bluetooth communicates that this method comprises:
NFC module in the slave unit, main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment in, to the wake-up circuit output AC signal of slave unit;
Said wake-up circuit is that the input and output IO mouth of the DC pulse Bluetooth chip that outputs to slave unit produces hardware interrupts with NFC module output AC conversion of signals, activates this Bluetooth chip.
In the method, the detecting circuit of said wake-up circuit for being made up of diode, resistance and electric capacity is set.
Said wake-up circuit is set to be comprised for the detecting circuit of being made up of diode, resistance and electric capacity: the positive pole that said diode is set is connected with the output of NFC module; The negative pole that said diode is set is connected with an end of resistance; The other end that resistance is set is connected with an end of electric capacity; The other end ground connection of electric capacity is set, the end that resistance is connected with electric capacity is set is connected with the IO mouth of Bluetooth chip.
This method further comprises: in wake-up circuit, increase a catching diode, the positive pole that this catching diode is set connects with the end that resistance is connected with electric capacity, and the negative pole that this catching diode is set is connected with a power supply.
In the method, the electric capacity of choosing microfarad uF level is chosen kilohm resistance of K Ω level as the said resistance in the wake-up circuit as the said electric capacity in the wake-up circuit; Choose Schottky diode as said catching diode.
In sum, this NFC module of the present invention main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment, simultaneously to wake-up circuit output AC signal; Wake-up circuit; Being used for NFC module output AC conversion of signals is the input and output IO mouth generation hardware interrupts that DC pulse outputs to Bluetooth chip; Activate the technical scheme of Bluetooth chip; Make be in await orders or sleep pattern under can be activated fast like slave units such as bluetooth earphones, can under the prerequisite that reduces power consumption, realize quick Bluetooth pairing based on NFC.
Bluetooth earphone wake-up circuit of the present invention has been optimized the application of NFC module and bluetooth module, has solved bluetooth earphone and under sleep pattern, can not utilize NFC communication to carry out the bluetooth problem of pairing fast, has expanded NFC The Application of Technology field and scope.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. the bluetooth earphone based on wireless near field communication NFC is characterized in that, this bluetooth earphone comprises: Bluetooth chip, preserve the NFC module of Bluetooth chip address and be arranged on Bluetooth chip and the NFC module between wake-up circuit; Wherein,
The NFC module, be used for main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment, simultaneously to wake-up circuit output AC signal;
Wake-up circuit, being used for NFC module output AC conversion of signals is the input and output IO mouth generation hardware interrupts that DC pulse outputs to Bluetooth chip, activates Bluetooth chip.
2. bluetooth earphone according to claim 1 is characterized in that, said wake-up circuit is the detecting circuit of being made up of diode, resistance and electric capacity.
3. bluetooth earphone according to claim 2; It is characterized in that; The positive pole of said diode is connected with the output of NFC module, and the negative pole of said diode is connected with an end of resistance, and the other end of resistance is connected with an end of electric capacity; The end that the other end ground connection of electric capacity, resistance are connected with electric capacity is connected with the IO mouth of Bluetooth chip.
4. bluetooth earphone according to claim 3 is characterized in that, said wake-up circuit also comprises a catching diode, and the positive pole of this catching diode connects with the end that resistance is connected with electric capacity, and the negative pole of this catching diode is connected with a power supply.
5. bluetooth earphone according to claim 4 is characterized in that,
Said electric capacity is the electric capacity of microfarad uF level, and said resistance is kilohm resistance of K Ω level;
Said catching diode is a Schottky diode.
6. the Bluetooth communication method based on NFC is characterized in that, this method comprises:
NFC module in the slave unit, main equipment near the time communicate by letter with main equipment the Bluetooth chip address of preserving offered main equipment in, to the wake-up circuit output AC signal of slave unit;
Said wake-up circuit is that the input and output IO mouth of the DC pulse Bluetooth chip that outputs to slave unit produces hardware interrupts with NFC module output AC conversion of signals, activates this Bluetooth chip.
7. method according to claim 6 is characterized in that, the detecting circuit of said wake-up circuit for being made up of diode, resistance and electric capacity is set.
8. method according to claim 7 is characterized in that, said wake-up circuit is set comprises for the detecting circuit of being made up of diode, resistance and electric capacity:
The positive pole that said diode is set is connected with the output of NFC module; The negative pole that said diode is set is connected with an end of resistance; The other end that resistance is set is connected with an end of electric capacity, and the other end ground connection of electric capacity is set, and the end that resistance is connected with electric capacity is set is connected with the IO mouth of Bluetooth chip.
9. method according to claim 8; It is characterized in that; This method further comprises: in wake-up circuit, increase a catching diode, the positive pole that this catching diode is set connects with the end that resistance is connected with electric capacity, and the negative pole that this catching diode is set is connected with a power supply.
10. method according to claim 9 is characterized in that,
The electric capacity of choosing microfarad uF level is chosen kilohm resistance of K Ω level as the said resistance in the wake-up circuit as the said electric capacity in the wake-up circuit;
Choose Schottky diode as said catching diode.
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| CN103441784A (en) * | 2013-08-26 | 2013-12-11 | 刘芳 | Electronic bracelet device and electronic bracelet information transmission method |
| CN103905965A (en) * | 2012-12-27 | 2014-07-02 | Gn瑞声达A/S | Hearing component with power managing function and the connection method thereof |
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| CN104683003A (en) * | 2015-03-05 | 2015-06-03 | 丰唐物联技术（深圳）有限公司 | Bluetooth connection switching method and system |
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| CN107979830A (en) * | 2017-11-21 | 2018-05-01 | 出门问问信息科技有限公司 | A kind of Bluetooth connecting method, device, equipment and the storage medium of intelligent back vision mirror |
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| CN112954661B (en) * | 2021-02-24 | 2023-03-24 | 北京骑胜科技有限公司 | Sharing apparatus, bluetooth control method, storage medium, and computer program product |
| CN113993113A (en) * | 2021-10-28 | 2022-01-28 | 深圳市创鸿新智能科技有限公司 | Bluetooth beacon, Bluetooth system and non-contact activation method |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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