CN206149269U - Changeable bluetooth device of communication range and bluetooth speaker - Google Patents
Changeable bluetooth device of communication range and bluetooth speaker Download PDFInfo
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- CN206149269U CN206149269U CN201620385336.9U CN201620385336U CN206149269U CN 206149269 U CN206149269 U CN 206149269U CN 201620385336 U CN201620385336 U CN 201620385336U CN 206149269 U CN206149269 U CN 206149269U
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Abstract
The utility model provides a changeable bluetooth device of communication range and bluetooth speaker, the changeable bluetooth device of communication range includes: a bluetooth modul. A transmission route, the 2nd transmission route, the 2nd transmission route includes amplifier circuit, antenna element, the control unit is suitable for the detection bluetooth module's received signal strength, and based on received signal strength control bluetooth module passes through a transmission route perhaps the 2nd transmission route follows antenna element received signal. The utility model discloses a changeable bluetooth device of communication range can be according to the strong and weak communication range that switches of bluetooth signal.
Description
Technology neighborhood
This utility model is related to communication technical field, more particularly to a kind of variable blue-tooth device of communication context and one kind it is blue
Tooth speaker.
Background technology
With the development of Bluetooth technology, the bluetooth equipment arrived used in people's life is more and more.For example, with intelligence
The popularization of mobile phone, people get used to by mobile phone to play music and video etc., while carrying out sound expansion by external Baffle Box of Bluetooth
Greatly.
Generally, Baffle Box of Bluetooth is to refer to embedded with bluetooth chip, replaces the sound equipment of traditional wire rod connection to set with bluetooth connection
It is standby, by being connected with the bluetooth playback equipment such as mobile phone, panel computer or notebook, reach the convenient and swift purpose for using.At present,
Based on portable sound box, profile is typically more compact, usually monophonic audio amplifier for Baffle Box of Bluetooth, in order to realize played in stereo or
The many audio amplifiers of person are synchronously played, and can be coupled together multiple Baffle Box of Bluetooth.
But, the limited range communication of existing Baffle Box of Bluetooth is not suitable for transmission at a distance.
Utility model content
The purpose of this utility model is to provide a kind of communication context variable blue-tooth device, can be according to Bluetooth signal
Power switching communication context.
This utility model embodiment provides a kind of variable blue-tooth device of communication context, including：Bluetooth module；First passes
Defeated path；Second transmission path, second transmission path includes amplifying circuit；Antenna element；Control unit, is adapted to detect for institute
The received signal strength of bluetooth module is stated, and the bluetooth module is controlled based on the received signal strength and passed by described first
Defeated path or second transmission path receive signal from the antenna element.
Alternatively, when the received signal strength is less than predetermined threshold value, described control unit controls the bluetooth module
By first transmission path to the antenna element sending signal, by second transmission path from the antenna element
Receive signal；When the received signal strength is more than the predetermined threshold value, described control unit controls the bluetooth module and leads to
Cross first transmission path to receive and sending signal.
Alternatively, the blue-tooth device also includes：First switch and second switch, described control unit is described by control
First switch and second switch come control the bluetooth module and antenna element the first transmission path and the second transmission path it
Between switch.
Alternatively, the first switch and the second switch are single-pole double-throw switch (SPDT), wherein, the first switch is not
Moved end electrically connects with the antenna element, and the first moved end electrically connects with the first end of first transmission path, the second moved end with
The first end electrical connection of second transmission path；The not moved end of the second switch electrically connects with the bluetooth module, and first
Moved end electrically connects with the second end of first transmission path, and the second moved end is electrically connected with the second end of second transmission path
Connect.
Alternatively, the amplifying circuit is low-noise amplifier, and described control unit includes first interface and second interface,
The first switch and the second switch are controlled by the first interface and second interface.
Alternatively, when the first interface sends the first level signal, and the second interface sends second electrical level signal
When, the first switch is electric with the first end of first transmission path by the antenna element by not moved end and the first moved end
Connection, the second switch is by not moved end and the first moved end by the second end of the bluetooth module and first transmission path
Electrical connection；When the first interface sends second electrical level signal, and the second interface is when sending the first level signal, and described the
One switch is electrically connected the antenna element with the first end of second transmission path by not moved end and the second moved end, described
Second switch is by the way that moved end and the second moved end do not electrically connect the bluetooth module with the second end of second transmission path.
Alternatively, the first interface and second interface are universal input/output interface.
Alternatively, first transmission path is interconnecting lead.
Alternatively, the amplifying circuit is low-noise amplifier, and the input of the low-noise amplifier is used as described the
The first end of two transmission paths, second end of the outfan as second transmission path.
Alternatively, the predetermined threshold value is -20dB～-40dB.
Alternatively, described control unit is integrated in the bluetooth module.
Additionally, this utility model embodiment additionally provides a kind of bluetooth loudspeaker, the bluetooth loudspeaker includes above-mentioned
The variable blue-tooth device of communication context.
Compared with prior art, the blue-tooth device and bluetooth loudspeaker of this utility model embodiment, can believe according to bluetooth
Number strong and weak switching communication context, it is adaptable to various different application scenes.
Description of the drawings
Fig. 1 shows the logic diagram of the variable blue-tooth device of the communication context of the embodiment of this utility model one；
Logic diagrams of the Fig. 2 for the variable blue-tooth device of the communication context shown in Fig. 1 under various operating conditions；
Fig. 3 for the variable blue-tooth device of communication context of the embodiment of this utility model one circuit structure diagram.
Specific embodiment
This utility model embodiment provides a kind of communication context variable wireless connection device, such as blue-tooth device, to connect
When receipts signal intensity is weaker, there is provided bigger communication context.
It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with the accompanying drawings to this
The specific embodiment of utility model is described in detail.
It should be noted that the purpose for providing these accompanying drawings contributes to understand embodiment of the present utility model, and should not
It is construed to improperly limit of the present utility model.For the sake of becoming apparent from, part shown in figure may do amplify, reduce or
Other changes.
Also, it should be noted that below in embodiment, to wireless connection dress of the present utility model by taking blue-tooth device as an example
Put and illustrate, but this utility model not limited to this.In some other embodiment, wireless connection device of the present utility model is also
Can be other wireless connection devices such as Wireless Fidelity (WIFI) device, infrared facility or ZigBee devices, using support phase
The wireless communication modules such as WIFI module, infrared module or the ZigBee module of communication protocol are answered to replace bluetooth in following embodiments
Module can be implemented.
With reference to Fig. 1, Fig. 1 shows the variable blue-tooth device of the communication context of the embodiment of this utility model one, including：Bluetooth
Module 10, the first transmission path 20, the second transmission path 30, antenna element 40 and control unit 50, wherein, second transmission
Path 30 includes amplifying circuit 31, and described control unit 50 is adapted to detect for the received signal strength of the bluetooth module 10, and base
In the received signal strength bluetooth module 10 is controlled by first transmission path 20 or the second transmission road
Footpath 30 receives signal from the antenna element 40.Specifically, when the received signal strength is less than predetermined threshold value, the control
Unit 50 controls the bluetooth module 10 by first transmission path 20 to the sending signal of the antenna element 40, by institute
State the second transmission path 30 and receive signal from the antenna element 40；When the received signal strength is more than the predetermined threshold value
When, described control unit is controlled the bluetooth module 10 and is received and sending signal by first transmission path 20.
The bluetooth module 10 refers to the chip or circuit board of integrated Bluetooth function, includes radiofrequency signal Transmit-Receive Unit
With control administrative unit etc., for short-distance wireless communication.The bluetooth module 10 can be using existing bluetooth in prior art
Chip or circuit board, for example, BC8670 bluetooth modules or BC8675 modules etc..
In certain embodiments, first transmission path 20 is connecting wire, for connecing in the bluetooth module 10
When receipts signal intensity is stronger, Bluetooth signal is received and sent；Or for the received signal strength of the bluetooth module 10 compared with
When weak, Bluetooth signal is sent.Second transmission path 30 includes amplifying circuit 31, for connecing in the bluetooth module 10
When receipts signal intensity is weaker, receives Bluetooth signal and be simultaneously amplified, so as to improve the receiving sensitivity of blue-tooth device.In some realities
In applying example, the amplifying circuit 31 is low-noise amplifier (LNA：Low Noise Amplifier), the low-noise amplifier
Input as second transmission path 30 first end, second end of the outfan as second transmission path 30.
Low-noise amplifier is relatively low due to noise coefficient, beneficial to the amplification to small-signal.Certainly, in some other embodiment,
Can be using other kinds of power amplifier as the amplifying circuit 31.
The antenna element 40 is Bluetooth antenna, for the transmitting and reception of radiofrequency signal, can be according to this utility model
The application scenarios of blue-tooth device, select different antenna design methods and making material, this utility model to be not construed as limiting this.
With reference to Fig. 1, the blue-tooth device further comprises first switch 60 and second switch 70.Described control unit 50 includes
First interface and second interface, by first interface and second interface the first switch 60 and the second switch 70 are controlled,
So as to control the switching of the transmission path between the bluetooth module 10 and antenna element 40.In one embodiment, the control
The first interface and second interface of unit 50 is universal input/output interface (GPIO：General Purpose Input
Output), the GPIO interface is usually used in embedded system, simple structure, can provide a control code, " 1 " or
" 0 ", represents "ON" and "Off" two states.Certainly, in other embodiments, it is also possible to according to concrete application, using others
Interface type.
In certain embodiments, the first switch 60 and the second switch 70 are single-pole double-throw switch (SPDT) (SPDT：
Single Pole Double Throw), respectively including not moved end and two moved ends, play the mesh of two equipment of control
's.Specifically, with reference to Fig. 1, the not moved end of the first switch 60 electrically connects with the antenna element 40, the first moved end with it is described
The first end electrical connection of the first transmission path 20, the second moved end electrically connects with the first end of second transmission path 30；It is described
The not moved end of second switch 70 electrically connects with the bluetooth module 10, the second end of the first moved end and first transmission path 20
Electrical connection, the second moved end electrically connects with the second end of second transmission path 30.Control the first switch 60 and second to open
Close 70 switchings respectively between two moved ends, it is possible to realize that the control bluetooth module 10 and antenna element 40 are passed first
The purpose switched between the transmission path 30 of defeated path 20 and second.
Described control unit 50 can detect the received signal strength of the bluetooth module 10, judge the strong of Bluetooth signal
It is weak.If received signal strength is higher than threshold value set in advance, illustrate that signal is stronger, described control unit 50 controls the bluetooth
Module 10 receives letter by first transmission path 20 to the sending signal of the antenna element 40 or from the antenna element 40
Number；If received signal strength be less than the threshold value set in advance, illustrate because of transmission range farther out, signal interference
Or the reason such as barrier obstruction result in that Bluetooth signal is weaker, the receiving sensitivity for improving the blue-tooth device is needed, then institute
State control unit 50 and control the bluetooth module 10 by first transmission path 20 to the sending signal of the antenna element 40,
Signal is received from the antenna element 40 by second transmission path 30.The threshold value set in advance can be -20dB
～-30dB, can set according to specific applied environment, can be -25dB, -30dB or -35dB for example.In some enforcements
In example, described control unit 50 can be integrated in the bluetooth module 10, the convenient reception signal to the bluetooth module 10
The detection of intensity.
In one embodiment, it is convenient to institute as shown in figure 1, described control unit 50 is integrated in the bluetooth module 10
State the detection of the received signal strength of bluetooth module 10.Described control unit 50 is opened by the first GPIO interface control described first
60 are closed, the second switch 70 is controlled by the second GPIO interface.When first GPIO interface sends the first level signal, and
When second GPIO interface sends second electrical level signal, as shown in figure 1, the first switch 60 is dynamic by not moved end and first
End electrically connects the antenna element 40 with the first end of first transmission path 20, and the second switch 70 is by not moved end
The bluetooth module 10 is electrically connected with the second end of first transmission path 20 with the first moved end, for when the bluetooth mould
The received signal strength of block 10 sends and receives signal when being more than predetermined threshold value, or for when the reception of the bluetooth module 10
The bluetooth module 10 is to the sending signal of the antenna 40 when signal intensity is more than predetermined threshold value.When first GPIO interface is sent out
When sending second electrical level signal, and second GPIO interface to send the first level signal, as shown in Fig. 2 the first switch 60
The antenna element 40 is electrically connected with the first end of second transmission path 30 by not moved end and the second moved end, described
Two switches 70 are electrically connected the bluetooth module 10 with the second end of second transmission path 30 by not moved end and the second moved end
Connect, for being less than predetermined threshold value when the received signal strength of the bluetooth module 10, the amplifying circuit 31 will be from the antenna
The signal that unit 40 is received is transmitted to the bluetooth module 10 after amplifying.In certain embodiments, first level signal is
Logic high " 1 ", the second electrical level signal is logic low " 0 ".In other embodiment, first level
Signal can also be logic low " 0 ", and the second electrical level signal is logic high " 1 ".
It should be noted that in above-described embodiment, between bluetooth module 10 and antenna element 40 first switch is added
60th, second switch 70 and amplifying circuit 31, between load impedance and singal source resistance are anti-in signals transmission mistake is there may be
Match somebody with somebody, therefore, the blue-tooth device of this utility model embodiment further comprises the resistance unit for providing impedance matching and for every
From the capacitor cell of direct current signal.The size and connected mode of the resistance unit and capacitor cell can be according to adopting
One switchs the particular type of 60, second switch 70 and amplifying circuit 31 to determine.
In above-described embodiment, the received signal strength of the bluetooth module 10 is detected by described control unit 50, can be with
Judge the intensity condition of Bluetooth signal, when the signal is strong, received and sending signal using the first transmission path 20, when signal it is weak
When, signal is received using the second transmission path for including amplifying circuit 31, receiving sensitivity is improve, increase communication model
Enclose.
Further blue-tooth device of the present utility model is illustrated below by a specific embodiment, it is described with reference to Fig. 3
Bluetooth module 10 adopts BC8675 chips；First transmission path 20 is interconnecting lead；In second transmission path 30
Amplifying circuit 31 adopts low-noise amplifier RTC6610 chips；The first switch 60 adopt RTC6603 chips, described second
Switch 70 adopts RTC6607 chips.
The BC8675 chips have RF ports for receiving and sending radiofrequency signal；The BC8675 chips include control
Unit processed 50, by detecting received signal strength indicator (RSSI：Received Signal Strength Indication) number
Value, you can to judge the power of Bluetooth signal, described control unit 50 includes two GPIO interfaces, is respectively used to output first electric
Ordinary mail BT_Switch_V1 and second electrical level signal BT_Switch_V2, for controlling the antenna element 40 and the bluetooth
Switching of the transmission path between module 10 between the first transmission path 20 and the second transmission path 30.
The first switch 60, i.e. RTC6603 chips include port RF1, GND, RF2, V1, RFC and V2, wherein, institute
State V1 ports to be connected to receive the first level signal BT_Switch_V1, the V2 ports and second with the first GPIO interface
GPIO interface is connected to receive second electrical level signal BT_Switch_V2, and the RF2 ports are used as the first switch 60
First moved end is connected with the first end of first transmission path, and the RF1 ports are moved as the second of the first switch 60
End be connected with the first end of second transmission path, the RFC ports as the first switch 60 not moved end with it is described
Antenna element 40 connects.The second switch 70, i.e. RTC6607 chips include port Vcont1, Input, Vcout2,
Output1, GND and Output2, wherein, the Vcont1 ports are connected to receive the first level letter with the first GPIO interface
Number BT_Switch_V1, the Vcont2 ports are connected to receive second electrical level signal BT_Switch_ with the second GPIO interface
V2, the Output1 ports are connected as the first moved end of the second switch 70 with the second end of first transmission path,
The Output2 ports are connected as the second moved end of the second switch 70 with the second end of second transmission path, institute
The not moved end that Input ports are stated as the second switch 70 is connected with the antenna element 40.The amplifying circuit 31, i.e.,
RTC6610 chips include port VCC, RFOUT and RFIN, the RFIN ports as second transmission path first end,
Second end of the RFOUT ports as second transmission path.In the embodiment shown in fig. 3, the blue-tooth device is also
Including the capacitor cell and resistance list that match with the BC8675 chips, RTC6607 chips, RTC6607 chips and RTC6610
Unit, for isolated DC signal and impedance matching, its concrete numerical value and connected mode will not be described here.
When the received signal strength that described control unit 50 detects the bluetooth module 10 is more than predetermined threshold value, example
During such as -30dB, described control unit 50 controls the first level signal BT_Switch_V1=1 of first GPIO interface, institute
State the second electrical level signal BT_Switch_V2=0 of the second GPIO interface so that the Output1 ports of the RTC6607 chips
Connect with the RF2 ports of the RTC6603 chips, the bluetooth module 10 is received and sent by first transmission path 20
Signal.When described control unit 50 detects the received signal strength of the bluetooth module 10 less than predetermined threshold value, and sending
During signal, the first level signal BT_Switch_V1=1 of first GPIO interface is controlled, the of second GPIO interface
Two level signals BT_Switch_V2=0 so that the Output1 ports of the RTC6607 chips and the RTC6603 chips
RF2 ports connect, to the sending signal of the antenna 40；When signal is received, the first level of first GPIO interface is controlled
Signal BT_Switch_V1=0, the second electrical level signal BT_Switch_V2=1 of second GPIO interface so that described
The Output2 ports of RTC6607 chips connect with the RFOUT ports of the RTC6610 chips, the RTC6610 chips
RFIN ports connect with the RF1 ports of the RTC6603 chips, and from the antenna element 40 signal is received.
Inventor of the present utility model also by the blue-tooth device in experiment test above-described embodiment with it is single
The communication context of BC8675 chips, the receiving sensitivity of the BC8675 chips is -88dBm, logical under different antennae angle
News scope is about 50 meters or so；And the receiving sensitivity of the blue-tooth device of this utility model embodiment can reach -92.8dBm,
Communication context under different antennae angle is about 100 meters or so, substantially increases communication context.
It should be noted that bluetooth module 10 described in above-described embodiment, amplifying circuit 31, first switch 60 and second open
Close 70 chip models for being adopted only as an example, be not limited to protection domain of the present utility model.In other embodiment
In, the bluetooth module 10, amplifying circuit 31, first switch 60 and second switch 70 can also adopt the chip of other models,
Can be determined according to concrete application.
Accordingly, this utility model embodiment additionally provides a kind of bluetooth loudspeaker, includes described in above-described embodiment
The variable blue-tooth device of communication context, and driver element and phonation unit etc..The bluetooth loudspeaker is by the communication
The blue-tooth device of variable range receives sound signal source, therefore also has adjustable communication context, to tackle different application rings
Border.The bluetooth loudspeaker can be audio amplifier or earphone etc..
Although this utility model is disclosed as above, this utility model is not limited to this.Any those skilled in the art,
Without departing from spirit and scope of the present utility model, can make various changes or modifications, therefore protection domain of the present utility model
Should be defined by claim limited range.
Claims (12)
1. the variable blue-tooth device of a kind of communication context, it is characterised in that include：
Bluetooth module；
First transmission path；
Second transmission path, second transmission path includes amplifying circuit；
Antenna element；
Control unit, is adapted to detect for the received signal strength of the bluetooth module, and controls institute based on the received signal strength
State bluetooth module and signal is received from the antenna element by first transmission path or second transmission path.
2. the variable blue-tooth device of communication context as claimed in claim 1, it is characterised in that when the received signal strength it is little
When predetermined threshold value, described control unit is controlled the bluetooth module and is sent out to the antenna element by first transmission path
The number of delivering letters, signal is received by second transmission path from the antenna element；When the received signal strength is more than described
During predetermined threshold value, described control unit is controlled the bluetooth module and is received by first transmission path and sending signal.
3. the variable blue-tooth device of communication context as claimed in claim 2, it is characterised in that also include：First switch and
Two switches, described control unit controls the bluetooth module and antenna element by controlling the first switch and second switch
Switch between the first transmission path and the second transmission path.
4. the variable blue-tooth device of communication context as claimed in claim 3, it is characterised in that the first switch and described
Two switch be single-pole double-throw switch (SPDT), wherein, the not moved end of the first switch electrically connect with the antenna element, the first moved end and
The first end electrical connection of first transmission path, the second moved end electrically connects with the first end of second transmission path；It is described
The not moved end of second switch electrically connects with the bluetooth module, and the first moved end is electrically connected with the second end of first transmission path
Connect, the second moved end electrically connects with the second end of second transmission path.
5. the variable blue-tooth device of communication context as claimed in claim 4, it is characterised in that described control unit includes first
Interface and second interface, by the first interface and second interface the first switch and the second switch are controlled.
6. the variable blue-tooth device of communication context as claimed in claim 5, it is characterised in that when the first interface sends the
One level signal, and during second interface transmission second electrical level signal, the first switch is by not moved end and the first moved end
The antenna element is electrically connected with the first end of first transmission path, the second switch is dynamic by not moved end and first
End electrically connects the bluetooth module with the second end of first transmission path；When the first interface sends second electrical level letter
Number, and during the second interface the first level signal of transmission, the first switch passes through not moved end and the second moved end by the day
Line unit is electrically connected with the first end of second transmission path, and the second switch is by the way that moved end and the second moved end will be not described
Bluetooth module is electrically connected with the second end of second transmission path.
7. the variable blue-tooth device of communication context as claimed in claim 5, it is characterised in that the first interface and second connects
Mouth is universal input/output interface.
8. the variable blue-tooth device of communication context as claimed in claim 1, it is characterised in that first transmission path is mutual
Connect wire.
9. the variable blue-tooth device of communication context as claimed in claim 1, it is characterised in that the amplifying circuit is low noise
Amplifier, used as the first end of second transmission path, outfan is used as described for the input of the low-noise amplifier
Second end of two transmission paths.
10. the variable blue-tooth device of communication context as claimed in claim 2, it is characterised in that the predetermined threshold value is -20dB
～-40dB.
The variable blue-tooth device of 11. communication contexts as claimed in claim 1, it is characterised in that described control unit is integrated in
In the bluetooth module.
12. a kind of bluetooth loudspeakers, it is characterised in that the bluetooth loudspeaker is included as any one of claim 1-11
The variable blue-tooth device of communication context.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385336.9U CN206149269U (en) | 2016-04-29 | 2016-04-29 | Changeable bluetooth device of communication range and bluetooth speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385336.9U CN206149269U (en) | 2016-04-29 | 2016-04-29 | Changeable bluetooth device of communication range and bluetooth speaker |
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| Publication Number | Publication Date |
|---|---|
| CN206149269U true CN206149269U (en) | 2017-05-03 |
Family
ID=58616085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620385336.9U Active CN206149269U (en) | 2016-04-29 | 2016-04-29 | Changeable bluetooth device of communication range and bluetooth speaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110234178A (en) * | 2019-06-11 | 2019-09-13 | 深圳云里物里科技股份有限公司 | A kind of Bluetooth gateway and setting method, system, computer readable storage medium |
| WO2019233492A1 (en) * | 2018-06-07 | 2019-12-12 | 华为技术有限公司 | Transmission path switching method and device |
-
2016
- 2016-04-29 CN CN201620385336.9U patent/CN206149269U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019233492A1 (en) * | 2018-06-07 | 2019-12-12 | 华为技术有限公司 | Transmission path switching method and device |
| CN112219423A (en) * | 2018-06-07 | 2021-01-12 | 华为技术有限公司 | Transmission path switching method and device |
| US11496946B2 (en) | 2018-06-07 | 2022-11-08 | Huawei Technologies Co., Ltd. | Transmission path switching method and apparatus |
| CN112219423B (en) * | 2018-06-07 | 2023-08-22 | 华为技术有限公司 | Transmission path switching method and device |
| CN110234178A (en) * | 2019-06-11 | 2019-09-13 | 深圳云里物里科技股份有限公司 | A kind of Bluetooth gateway and setting method, system, computer readable storage medium |
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