CN208548999U - Bluetooth headset and its charging system - Google Patents
Bluetooth headset and its charging system Download PDFInfo
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- CN208548999U CN208548999U CN201820941147.4U CN201820941147U CN208548999U CN 208548999 U CN208548999 U CN 208548999U CN 201820941147 U CN201820941147 U CN 201820941147U CN 208548999 U CN208548999 U CN 208548999U
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Abstract
A kind of bluetooth headset and its charging system of basis and the connection status automatic switching of charging unit.The bluetooth headset includes the transistor of the connection status of governor circuit, charging port and detection charging port and charging unit, the transistor is according to the connection status on or off of charging port and charging unit, change to which the output end level of the transistor generates height, the governor circuit controls bluetooth headset booting or shutdown according to the height variation of the height or level of the output end level of the transistor.The charging bluetooth earphone system includes bluetooth headset and the charging unit for the charging of bluetooth headset battery.When bluetooth headset is connect with charging unit, bluetooth headset automatic shutdown, when bluetooth headset and charging unit disconnect, bluetooth headset Auto Power On.The utility model has extremely low power dissipation, high reliablity, the simple beneficial effect low with production cost of circuit.
Description
Technical field
The utility model relates to bluetooth headset and its switching on and shutting down control fields, and in particular to a kind of basis and charging unit
The bluetooth headset and its charging system of connection status automatic switching.
Background technique
Different from traditional earphone, the constraint that family gets rid of earphone cable is can be used in bluetooth headset.Bluetooth headset is usually logical
Connection charger is crossed to charge, when user when outgoing at one's side without attaching plug in the case where, then can not be filled
Electricity, therefore there is charging bluetooth earphone box.When bluetooth headset is placed into charging box, bluetooth headset meeting automatic shutdown,
Charging box starts to charge to it, and when bluetooth headset is removed charging box, charging terminates, and bluetooth headset is opened automatically
Machine.
There are three types of the technology box-like state of discrepancy of bluetooth headset and switching on and shutting down controls for identification at present:
1. Bluetooth chip software identifies.By the charge port on earphone, the charged state of identification earphone is carried out with software.This
Kind mode is disadvantageous in that: stand-by power consumption is high；When charging box battery exhausts, earphone also can Auto Power On when entering box；It needs
Chip real-time monitoring voltage is wanted, the computational load of chip has been aggravated.
2. using Hall switch.Enter the magnet sensed after box on charging box by the Hall element in earphone, using suddenly
You export low and high level by element, to issue instructions to the special switch machine IC pin of Bluetooth chip, realize switching on and shutting down.This mode
It is disadvantageous in that: Gao Chengben；Hall element placement is restricted, and is not suitable for insert earphone structure and is used；External magnetic field is higher
It will cause earphone error cut-off machine；When charging box battery exhausts, earphone enters also can Auto Power On under box-like state.
3. increasing contact pilotage.By respectively increasing a contact pilotage in earphone and charging box, comes whether test earphone enters box, opened
Shutdown control.This mode is disadvantageous in that: occupied space is big, is not suitable for insert earphone and uses；Increase contact pin counts
The undesirable risk of stylus contact is increased simultaneously.
Utility model content
The technical problem to be solved by the present invention is to avoid the deficiency of above-mentioned technical proposal, and proposes one kind and do not increase
Add other component, and does not depend on external charging power supply status and can be achieved with the bluetooth headset and its charging that box is switched on that shut down out into box
System.
The utility model solves the connection that technical solution used by the technical problem is a kind of basis and charging unit
The bluetooth headset of state automatic switching, including governor circuit and charging port further include detection charging port and charging unit
The transistor of connection status, the transistor are connected or are cut with the connection status of charging unit according to charging port
Only, so that the output end level of the transistor generates height variation, the governor circuit is according to the defeated of the transistor
The height variation of the height or level of outlet level controls bluetooth headset booting or shutdown.
Further, the transistor is field effect transistor.
Further, the transistor is NMOS tube.
It further, further include the bluetooth headset battery powered for bluetooth headset, first resistor and second resistance, the master
Controlling in circuit includes main control chip, and the charging port includes high level input terminal Vin1 and the sub- Vin2 of low-level input；
The high level input terminal Vin1 is electrically connected with the second pin of the main control chip；The sub- Vin2 of low-level input with
One end of first resistor is electrically connected；The other end of the first resistor is electrically connected with the grid of the NMOS tube；The grid of NMOS tube
Pole is also electrically connected with one end of the second resistance；The other end and the bluetooth headset electricity of the drain electrode of NMOS tube and the second resistance
The anode electrical connection in pond；The source electrode of NMOS tube is electrically connected with the first pin of the main control chip；The cathode of bluetooth headset battery
Ground connection.
It further, further include the bluetooth headset battery powered for bluetooth headset, first resistor, second resistance and two poles
It manages, includes main control chip in the governor circuit, the charging port includes high level input terminal Vin1 and low level input
Terminal Vin2；The high level input terminal Vin1 is electrically connected with the second pin of the main control chip；The low level input
Terminal Vin2 is electrically connected with the cathode of one end of first resistor and the diode；The other end of the first resistor with it is described
The grid of NMOS tube is electrically connected；The grid of NMOS tube is also electrically connected with one end of the second resistance；The drain electrode of NMOS tube and institute
State the anode electrical connection of the other end and bluetooth headset battery of second resistance；The first of the source electrode of NMOS tube and the main control chip
Pin electrical connection；The plus earth of the diode；The cathode of bluetooth headset battery is grounded.
It further, further include the bluetooth headset battery powered for bluetooth headset, first resistor, second resistance, third electricity
Resistance and diode, include main control chip in the governor circuit, and the charging port includes high level input terminal Vin1 and low
The sub- Vin2 of level input；The high level input terminal Vin1 passes through the second pin of 3rd resistor and main control chip electricity
Connection；The sub- Vin2 of low-level input is electrically connected with the cathode of one end of first resistor and the diode；Described first
The other end of resistance is electrically connected with the grid of the NMOS tube；The one end of the grid of NMOS tube also with the second resistance is electrically connected
It connects；The drain electrode of NMOS tube is electrically connected with the anode of the other end of the second resistance and bluetooth headset battery；The source electrode of NMOS tube
It is electrically connected with the first pin of the main control chip；The plus earth of the diode；The cathode of bluetooth headset battery is grounded.
Further, the model AB1524_5X5_64L of the main control chip, the first pin of the main control chip are
REGEN/POWER pin, the second pin are VCHG pin.
Further, the signal that the governor circuit is received according to the first pin or the second pin of the main control chip
The height variation control bluetooth headset shutdown of the height or level of level, governor circuit are received according to the first pin of main control chip
To the height variation control bluetooth headset booting of the height or level of signal level.
Further, described in the case that the first pin of main control chip or the second pin all receive useful signal
The height variation of the height or level of the signal level that governor circuit is preferentially received using the second pin of the main control chip
Control bluetooth headset shutdown.
The utility model, which solves technical solution used by the technical problem, can also be a kind of charging bluetooth earphone system
System, including bluetooth headset and charging bluetooth earphone device；The bluetooth headset, including governor circuit, charging port and be used for
The transistor of the connection status of charging port and charging unit is detected, which fills according to charging port and charging
The connection status on or off set changes so that the output end level of the transistor generates height, the master control electricity
Road controls bluetooth headset booting according to the height variation of the height or level of the output end level of the transistor or closes
Machine；The charging port includes high level input terminal Vin1 and the sub- Vin2 of low-level input；The charging unit includes filling
Electricity output interface, the charging output interface include high level output terminal Vout1 and low level output terminal Vout2；Work as institute
When stating bluetooth headset and connecting with charging box, the high level input terminal Vin1 and the high level output terminal Vout1 are electrically connected
It connects；The sub- Vin2 of low-level input and low level output terminal Vout2 electrical connection.
Compared with the existing technology compared with, the beneficial effects of the utility model are: 1, without software real-time detection external electrical
Source state, it is only necessary to the switching on and shutting down of bluetooth headset are controlled by the level or level change of part pin, system power dissipation is extremely low, connects
It is bordering on zero；2, charging unit without electricity in the case where, when bluetooth headset is connected with charging unit still can automatic shutdown, into
One step reduces power consumption；3, due to being not necessarily to software real-time detection, it is only necessary to the level signal of detection part pin, chip operand
Small, detection accuracy is high, and effectiveness is high, and error probability is low；4, without mechanical key, no increase probe and magnetic part,
Circuit is simple, and it is small that circuit occupies structure space；5, production cost is low.
Detailed description of the invention
Fig. 1 is the structure of a kind of basis of the utility model with the bluetooth headset of the connection status automatic switching of charging unit
Schematic block diagram；
Fig. 2 is the bluetooth headset of one of the preferred embodiment in the utility model and the circuit structure of charging bluetooth earphone system
Schematic diagram；
Fig. 3 is one of the electrical block diagram of the charging bluetooth earphone system of one of the preferred embodiment in the utility model；
Fig. 4 is the schematic equivalent circuit that bluetooth headset enters after charging box in the preferred embodiment in the utility model；
Fig. 5 be the charging bluetooth earphone system of one of the preferred embodiment in the utility model electrical block diagram it
Two；
Fig. 6 is the schematic equivalent circuit that bluetooth headset goes out after charging box in the preferred embodiment in the utility model；
Fig. 7 is the bluetooth headset on-off control method flow chart of one of the preferred embodiment in the utility model.
Specific embodiment
The embodiments of the present invention is further described below in conjunction with each attached drawing.
As shown in Fig. 1, the bluetooth ear of a kind of basis of the utility model and the connection status automatic switching of charging unit
Owner will be made of four parts: charging port, transistor, governor circuit and bluetooth headset battery.The transistor
It is connected for detecting the connection status of charging port and charging unit, and according to the connection status of charging port and charging unit
Or cut-off, height variation is generated so as to cause the output end level of the transistor, governor circuit is according to the transistor
Output end level height or output end level height variation control the bluetooth headset booting or shutdown.Specifically,
The bluetooth headset battery is rechargeable battery.When bluetooth headset is connect with charging unit, governor circuit first controls bluetooth headset
Shutdown, then charging unit just starts to charge the battery；When bluetooth headset and charging unit disconnect, there is electricity in battery
In the case of, governor circuit controls bluetooth headset booting.
As shown in Fig. 2, the transistor is specifically NMOS field-effect tube Q1.Indigo plant described in the utility model
Tooth earphone includes NMOS field-effect tube Q1, first resistor R1, second resistance R2,3rd resistor R3, diode Q2, bluetooth headset electricity
Pond BAT and charging port.Charging port includes high level input terminal Vin1 and the sub- Vin2 of low-level input.
Successively illustrate three embodiments of the utility model below with reference to attached drawing 2:
Embodiment one, including attached high level input terminal Vin1 shown in Fig. 2, low-level input sub- Vin2, NMOS
Field-effect tube Q1, first resistor R1, second resistance R2, bluetooth headset battery BAT and governor circuit.Governor circuit includes master control core
Piece, in the present embodiment, the model AB1524_5X5_64L of the main control chip.First pin of main control chip is REGEN/
POWER pin, the second pin are VCHG pin.
High level input terminal Vin1 is directly connected to the VCHG pin of main control chip, the sub- Vin2 of low-level input and
One end of one resistance R1 is electrically connected.The grid G of the NMOS field-effect tube Q1 other end and second resistance with first resistor R1 simultaneously
One end electric signal of R2 connects, and the drain D of NMOS field-effect tube Q1 is connect with the other end electric signal of second resistance R2, simultaneously also
It is connected to the anode of bluetooth headset battery BAT.The AGND pin of the cathode ground connection and main control chip of battery BAT.NMOS field-effect
The source S output end of pipe Q1 is connected to the REGEN/POWER pin of main control chip.
What embodiment one was realized has the technical effect that, can control bluetooth according to the connection status of bluetooth headset and charging unit
The switching on and shutting down of earphone.When bluetooth headset is connected with charging box, NMOS field-effect tube Q1 ends, and the source S output end of Q1 is defeated
Low level signal or low level failing edge trigger signal is become from high level out, governor circuit controls bluetooth ear according to the signal
Organ's machine；When bluetooth headset and charging box disconnect, NMOS field-effect tube Q1 conducting, the source S output end of Q1 exports high
Level signal or the rising edge trigger signal for becoming high level from low level, in the case where battery BAT has electricity, governor circuit root
According to signal control bluetooth headset booting.
Embodiment two on the basis of example 1, increases diode Q2 as shown in Fig. 2.The cathode of diode Q2
It is electrically connected simultaneously with one end of low-level input sub- Vin2 and first resistor R1, the plus earth and main control chip of diode Q2
AGND pin.
Embodiment two, on the one hand can by increased diode Q2 other than the technical effect of embodiment one may be implemented
To be formed to the charge circuit of bluetooth headset battery, on the other hand, diode Q2 is by first resistor R1, second resistance R2 and NMOS
The AGND pin of field-effect tube Q1 and main control chip is kept apart, and is made mainly by NMOS field-effect tube Q1, first resistor R1 and second
The switching on and shutting down control circuit of resistance R2 composition can independent control bluetooth headset switching on and shutting down, while not influencing charge circuit again
It works normally.
Embodiment three on the basis of example 2, increases 3rd resistor R3 as shown in Fig. 2.High level input terminal
Sub- Vin1 is connected to the VCHG pin of main control chip by 3rd resistor R3.
Embodiment three can also pass through third electricity other than the technical effect of embodiment one and embodiment two may be implemented
Resistance R3 plays the technical effect to entire circuit current-limiting protection.
To the grid G of NMOS field-effect tube Q1, the TP2 Node connectedness in attached drawing 2 arrived for TP1 Node connectedness in attached drawing 2
The source S of NMOS field-effect tube Q1, TP1 node and TP2 node are used to measure in practice the voltage of the point.
Transistor and its peripheral circuit in the utility model include first resistor R1, second resistance R2, third electricity
Resistance R3 and diode Q2 etc. are desirably integrated into bluetooth headset main control chip, to further decrease circuit area.
As shown in Fig. 2, charging bluetooth earphone system described in the utility model includes charging bluetooth earphone device and indigo plant
Tooth earphone.The utility model is applied at present on moving charging electric-type bluetooth headset, and therefore, charging unit is preferably charging box.
Corresponding to the charging port for being used for input current on bluetooth headset, there are two charging box tools for exporting the charging port of electric current,
High level output terminal Vout1 and low level output terminal Vout2 correspond respectively to+5V in the embodiments of the present invention
End and GND ground terminal.
By taking embodiment three as an example, attached drawing 3 to attached drawing 6 is used to illustrate the work of the utility model bluetooth headset switching on and shutting down control
Principle.
As shown in Fig. 3, when bluetooth headset is placed into charging box, the port+5V and GND of charging box respectively with bluetooth ear
The sub- Vin2 docking conducting of the high level input terminal Vin1 and low-level input of machine charging port.RX is that bluetooth headset fills in figure
The equivalent resistance of electric box.
In the case where charging box has electricity, the charging current issued from the end charging box+5V is followed by the high electricity of bluetooth headset
Flat input terminal Vin1,3rd resistor R3, the VCHG pin of main control chip, battery BAT anode, battery BAT cathode, main control chip
AGND pin, diode Q2, finally by the sub- Vin2 of low-level input lead to charging box GND ground terminal constitute bluetooth
The charge circuit of earphone, as shown in closeer dotted line in attached drawing 3.At this point, the VCHG pin of main control chip receives high level signal
Or becoming the rising edge trigger signal of high level from low level, governor circuit controls bluetooth headset according to this signal priority and closes
Machine, subsequent bluetooth headset enter charged state.
No matter whether charging box has electricity, as the high level input terminal Vin1 and low electricity for detecting charging bluetooth earphone port
In the case where having access charging box between flat input terminal Vin2, switching on and shutting down control circuit is opened under the driving of bluetooth headset battery
Beginning work.During controlling shutdown, electric current is defeated followed by second resistance R2, first resistor R1, low level from battery BAT
The AGND pin for entering terminal Vin2, high level input terminal Vin1,3rd resistor R3 to main control chip is formd as in attached drawing 3
Relatively dredge route shown in dotted line.The voltage of wherein R1=1k Ω, R2=180k Ω, R3=2.2 Ω, battery BAT are 3.7V, and electric current is
50mA.The independent shutdown control for realizing bluetooth headset of the route, control principle by attached bluetooth headset shown in Fig. 4 and
The equivalent circuit diagram of charging box is explained.
As shown in Fig. 4, wherein RX is the equivalent resistance of charging box, and RJ is the equivalent resistance of bluetooth headset governor circuit,
BAT is bluetooth headset battery.The voltage V of TP1 nodeTP1It calculates as follows:
VTP1=VQ1_G=VBAT× (R1+RX+RJ)/R2+(R1+RX+RJ) }
In the third embodiment, R1=1k Ω, R2=180k Ω, RX=6.2k Ω, RJ=2k Ω, BAT voltage VBAT=3.7V, institute
With,
VTP1=3.7 × (1+6.2+2)/180+(1+6.2+2) }=0.18V
Since bluetooth headset is in normal operating conditions, NMOS tube Q1 is in the conductive state, therefore,
VQ1_S=VBAT
So
VGS=VQ1_G-VQ1_S<0
NMOS field-effect tube Q1 pipe ends at this time, TP2 node Non voltage output, the REGEN/ of bluetooth headset main control chip
The signal that POWER pin receives is low level signal or becomes low level failing edge trigger signal, master control electricity from high level
Road controls bluetooth headset automatic shutdown.
Illustrate that bluetooth headset enters the logical order of box shutdown control below:
Bluetooth headset can be the state of booting or shutdown before entering box.When bluetooth headset has been off-mode,
Bluetooth headset is just directly entered the state to charge for bluetooth headset battery after entering box.The technical effect that the utility model is realized
It is so that bluetooth headset is entered charged state after open state tripping in box automatic shutdown, and open automatically after so that bluetooth headset is gone out box
Machine.
Bluetooth headset is placed into charging box in the state of booting, and bluetooth headset battery has electricity at this time, blue entering
Need first to control bluetooth headset shutdown before the charging of tooth earphone.
When charging box has electricity, charge circuit shown in closeer dotted line in attached drawing 3 is formd since bluetooth headset enters box, it is main
The VCHG pin of control chip receives high level signal or becomes the rising edge trigger signal of high level from low level.
Since bluetooth headset enters box, it has been formed simultaneously in attached drawing 3 and has relatively dredged route shown in dotted line, due to the access of charging box
NMOS field-effect tube Q1 is caused to end, the source S of NMOS field-effect tube Q1 exports low level signal or become by high level
For the REGEN/POWER pin of low level failing edge trigger signal to main control chip.
Governor circuit can arbitrarily select the signal on VCHG pin or REGEN/POWER pin to carry out shutdown control, only
Will wherein any one pin signal it is effective, that is, can control bluetooth headset shutdown.In the case where charging box has electricity, master control electricity
Road can preferentially select the control bluetooth headset shutdown of VCHG pin signal, at this point, shutdown control can be with main control chip
Signal on REGEN/POWER pin is unrelated.After shutdown, charging box starts to charging bluetooth earphone.
The dual shutdown control circuit of the utility model ensures that bluetooth headset enters that box can shut down and whether charging box has electricity
It is unrelated, it can avoid when charging box is without electricity, bluetooth headset enters no the case where working on of shutting down after box；Also it is avoided that bluetooth
There is a situation where open by mistake machine when abruptly starting to charge after earphone off-mode tripping in box.
When bluetooth headset is taken out in charging box, as shown in Fig. 5, the high level of charging bluetooth earphone port is defeated
Enter terminal Vin1 and the sub- Vin2 of low-level input to disconnect with+the 5V of charging box and the port GND respectively, at this time due to diode Q2
One-way conduction characteristic, battery BAT be connected can not with the AGND of bluetooth headset main control chip, charge circuit disconnect.In attached drawing 5
Connection relationship breaking between battery BAT, second resistance R2, first resistor R1 and charging box at this time has been marked with dotted line.Accordingly
, at this point, the equivalent circuit diagram of bluetooth headset and charging box is as shown in Fig. 6, wherein RJ be bluetooth headset governor circuit etc.
Resistance is imitated, BAT is bluetooth headset battery, and the X indication circuit in figure disconnects.
Since the internal resistance of NMOS field-effect tube Q1 is very high, the voltage V of TP1 nodeTP1It is approximately equal to the voltage of battery,
VTP1=VQ1_G≈VBAT=3.7V
Since Q1 is the conducting of depletion type NMOS tube, at this time drain D and source S, so,
VQ1_S=VBAT=VTP2
VTP1=VTP2
The voltage V of TP2 nodeTP2Equal to BAT cell voltage, the REGEN/POWER pin of bluetooth headset main control chip is received
To signal be high level signal or the rising edge trigger signal for becoming from low level high level, have the situation of electricity in bluetooth headset
Under, governor circuit controls bluetooth headset Auto Power On.
It as shown in Fig. 7, is a kind of flow chart of bluetooth headset on-off control method of the utility model.First to wherein
Signal processing unit and signal delay unit explain:
Discovery is when the level of bluetooth headset main control chip REGEN/POWER pin is by low get higher in actual measurement, it may appear that
Undershoot, i.e. high level fluctuate downwards, and duration increases signal in software signal processing and prolong within 25ms
Shi Danyuan avoids the invalid signals of front 25ms, to guarantee the stability of booting.In addition, when there are two bluetooth ears in Earphone box
When machine, after one of earphone is fully charged, the output voltage of charging box can change suddenly, form a small-pulse effect letter
Number, it is possible to another earphone can be made to open by mistake machine, therefore increase the signal processing of stabilization in software signal processing
Unit judges the pulse less than 5ms as illegal command, to exclude another earphone in the case where an earphone is fully charged
The case where opening by mistake machine.
Specific bluetooth headset on-off control method is as follows:
Firstly, judging the connection status of charging bluetooth earphone port and charging unit.
When charging bluetooth earphone port is connect with charging unit, i.e., when bluetooth headset is placed into charging box, main control chip root
Bluetooth headset shutdown is controlled according to the signal received on VCHG pin or REGEN/POWER pin.
Specifically, due to the formation of charge circuit, the VCHG pin of main control chip receives in the case where charging box has electricity
Become the rising edge trigger signal of high level, the preferential basis of bluetooth headset master control program to high level signal or from low level
The signal controls bluetooth headset shutdown, unrelated with the signal of main control chip REGEN/POWER pin.Subsequent bluetooth headset, which enters, to be filled
Electricity condition.
When NMOS tube detects that bluetooth headset enters box, NMOS tube cut-off connects on main control chip REGEN/POWER pin at this time
The signal received can there are two types of, one is low level signal, another kind is that high level becomes low level failing edge triggering letter
Number, master control program first carries out anti-jitter signal processing and signal delay process to the signal, further according to treated the signal
Bluetooth headset shutdown is controlled, it is unrelated either with or without electricity with charging box.Subsequent bluetooth headset battery enters charged state.
When charging bluetooth earphone port and charging unit disconnect, i.e., when bluetooth headset is taken out from charging box,
In the case that bluetooth headset has electricity, main control chip controls bluetooth headset according to the signal received on REGEN/POWER pin
Booting.
Specifically, when NMOS tube detects that bluetooth headset has gone out box, NMOS transistor conduction, main control chip REGEN/ at this time
The signal received on POWER pin can there are two types of, one is high level signal, another kind is that low level becomes high level
Rising edge trigger signal, master control program first carries out anti-jitter signal processing and signal delay process to the signal, further according to place
Signal control bluetooth headset booting after reason.
In a particular embodiment, the signal processing of anti-jitter is realized by signal processing unit, and signal delay process is
It is realized by signal delay unit.The signal processing unit and the signal delay unit can be setting in bluetooth master control electricity
Software function module inside road realizes the processing to signal by way of software, is also possible to be arranged in bluetooth governor circuit
External hardware circuit module realizes the processing to signal by way of hardware.
In other specific embodiments, according to the different characteristics of transistor, it can also be when REGEN/POWER is managed
The level signal received on foot is high level or becomes bluetooth headset when the rising edge trigger signal of high level from low level
Automatic shutdown, when the level signal received on REGEN/POWER pin is low level or becomes low level from high level
Bluetooth headset Auto Power On when failing edge trigger signal.
In other specific embodiments, the charging unit of bluetooth headset can be the charging units such as USB charger.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Using equivalent structure or equivalent flow shift made by utility model specification and accompanying drawing content, it is applied directly or indirectly in it
His relevant technical field, is also included in the patent protection scope of the utility model.
Claims (10)
1. the bluetooth headset of a kind of basis and the connection status automatic switching of charging unit, including governor circuit and charging end
Mouthful, it is characterised in that:
It further include the transistor for detecting charging port and charging unit connection status, the transistor is according to charging port
With the connection status on or off of charging unit, change so that the output end level of the transistor generates height, institute
It states governor circuit the bluetooth headset is controlled according to the variation of the height of the height of the output end level of the transistor or level and open
Machine or shutdown.
2. bluetooth headset according to claim 1, it is characterised in that:
The transistor is field effect transistor.
3. bluetooth headset according to claim 1, it is characterised in that:
The transistor is NMOS tube.
4. bluetooth headset according to claim 3, it is characterised in that:
Further include the bluetooth headset battery for bluetooth headset power supply, first resistor and second resistance, includes in the governor circuit
Main control chip, the charging port include that high level input terminal (Vin1) and low-level input are sub (Vin2)；
The high level input terminal (Vin1) is electrically connected with the second pin of the main control chip；Low-level input
(Vin2) it is electrically connected with one end of first resistor；The other end of the first resistor is electrically connected with the grid of the NMOS tube；
The grid of NMOS tube is also electrically connected with one end of the second resistance；The drain electrode of NMOS tube and the other end of the second resistance and
The anode electrical connection of bluetooth headset battery；The source electrode of NMOS tube is electrically connected with the first pin of the main control chip；Bluetooth headset
The cathode of battery is grounded.
5. bluetooth headset according to claim 3, it is characterised in that:
It further include the bluetooth headset battery for bluetooth headset power supply, first resistor, second resistance and diode, the governor circuit
In include main control chip, the charging port include high level input terminal (Vin1) and low-level input son (Vin2)；
The high level input terminal (Vin1) is electrically connected with the second pin of the main control chip；Low-level input
(Vin2) it is electrically connected with the cathode of one end of first resistor and the diode；The other end of the first resistor and the NMOS
The grid of pipe is electrically connected；The grid of NMOS tube is also electrically connected with one end of the second resistance；The drain electrode of NMOS tube and described the
The anode electrical connection of the other end and bluetooth headset battery of two resistance；First pin of the source electrode of NMOS tube and the main control chip
Electrical connection；The plus earth of the diode；The cathode of bluetooth headset battery is grounded.
6. bluetooth headset according to claim 3, it is characterised in that:
It further include the bluetooth headset battery for bluetooth headset power supply, first resistor, second resistance, 3rd resistor and diode, institute
Stating includes main control chip in governor circuit, and the charging port includes high level input terminal (Vin1) and low-level input
(Vin2)；
The high level input terminal (Vin1) is electrically connected by 3rd resistor with the second pin of the main control chip；It is described low
Level input (Vin2) is electrically connected with the cathode of one end of first resistor and the diode；The first resistor it is another
End is electrically connected with the grid of the NMOS tube；The grid of NMOS tube is also electrically connected with one end of the second resistance；NMOS tube
It drains and is electrically connected with the anode of the other end of the second resistance and bluetooth headset battery；The source electrode of NMOS tube and the master control core
First pin of piece is electrically connected；The plus earth of the diode；The cathode of bluetooth headset battery is grounded.
7. the bluetooth headset according to any one of claim 4 to 6, it is characterised in that:
The model AB1524_5X5_64L of the main control chip, the first pin of the main control chip are REGEN/POWER pipe
Foot, the second pin are VCHG pin.
8. the bluetooth headset according to any one of claim 4 to 6, it is characterised in that:
The height for the signal level that the governor circuit is received according to the first pin and/or the second pin of the main control chip
Or the height variation control bluetooth headset shutdown of level, governor circuit receive signal level according to the first pin of main control chip
Height or level height variation control bluetooth headset booting.
9. bluetooth headset according to claim 8, it is characterised in that:
In the case that the first pin of main control chip and the second pin all receive useful signal, the governor circuit is preferentially adopted
The height of the signal level received with the second pin of the main control chip or the height variation control bluetooth headset of level close
Machine.
10. a kind of charging bluetooth earphone system, it is characterised in that:
Including bluetooth headset and charging bluetooth earphone device；The bluetooth headset, including governor circuit, charging port and be used for
The transistor of the connection status of charging port and charging unit is detected, which fills according to charging port and charging
The connection status on or off set changes so that the output end level of the transistor generates height, the master control electricity
Road controls bluetooth headset booting according to the height variation of the height or level of the output end level of the transistor or closes
Machine；
The charging port includes that high level input terminal (Vin1) and low-level input are sub (Vin2)；
The charging unit include charging output interface, the charging output interface include high level output terminal (Vout1) and
Low level output terminal (Vout2)；
When the bluetooth headset is connect with charging box, the high level input terminal (Vin1) and the high level output terminal
(Vout1) it is electrically connected；The low-level input sub (Vin2) and the low level output terminal (Vout2) electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941147.4U CN208548999U (en) | 2018-06-19 | 2018-06-19 | Bluetooth headset and its charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941147.4U CN208548999U (en) | 2018-06-19 | 2018-06-19 | Bluetooth headset and its charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208548999U true CN208548999U (en) | 2019-02-26 |
Family
ID=65422889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820941147.4U Active CN208548999U (en) | 2018-06-19 | 2018-06-19 | Bluetooth headset and its charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208548999U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587592A (en) * | 2018-06-19 | 2019-04-05 | 伍军华 | Bluetooth headset and its on-off control method |
| CN112639634A (en) * | 2020-05-07 | 2021-04-09 | 深圳市大疆创新科技有限公司 | On-off control device and electronic equipment |
| CN113518277A (en) * | 2021-04-26 | 2021-10-19 | 广东朝阳电子科技股份有限公司 | Two-way communication circuit of real wireless Bluetooth earphone charging system |
-
2018
- 2018-06-19 CN CN201820941147.4U patent/CN208548999U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587592A (en) * | 2018-06-19 | 2019-04-05 | 伍军华 | Bluetooth headset and its on-off control method |
| CN112639634A (en) * | 2020-05-07 | 2021-04-09 | 深圳市大疆创新科技有限公司 | On-off control device and electronic equipment |
| CN113518277A (en) * | 2021-04-26 | 2021-10-19 | 广东朝阳电子科技股份有限公司 | Two-way communication circuit of real wireless Bluetooth earphone charging system |
| CN113518277B (en) * | 2021-04-26 | 2024-02-27 | 广东朝阳电子科技股份有限公司 | Bidirectional communication circuit of real wireless Bluetooth headset charging system |
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