CN103809492B - One-touch multifunctional control circuit and wearing electronic product - Google Patents
One-touch multifunctional control circuit and wearing electronic product Download PDFInfo
- Publication number
- CN103809492B CN103809492B CN201410063820.5A CN201410063820A CN103809492B CN 103809492 B CN103809492 B CN 103809492B CN 201410063820 A CN201410063820 A CN 201410063820A CN 103809492 B CN103809492 B CN 103809492B
- Authority
- CN
- China
- Prior art keywords
- circuit
- button
- control circuit
- current
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of one-touch multifunctional control circuit and dress electronic product, comprising power supply, key circuit, power control circuit, reset circuit and processor; In described key circuit, be provided with a button, power control circuit is connected according to the folding condition of button or is cut off the current supply circuit of processor; The first on-off element and capacitor charge and discharge circuit is provided with in described reset circuit, described capacitor charge and discharge circuit controls the first on-off element break-make according to the folding condition of button, and then generates current supply circuit or maintenance current state that control signal controls power control circuit cut-out processor.The present invention only need arrange a button and can realize switching on and shutting down control and reset controlling dual-use function.In addition, by design NFC circuit and power charging circuit, while making electronic product have NFC function and charge function, the NFC achieving system wakes up and the power up function that charges, and improves diversity and the dirigibility of electronic product start-up mode.
Description
Technical field
The invention belongs to electronic circuit technology field, specifically, relate to a kind ofly to control for realizing switching on and shutting down to electronic product, the electronic circuit of the functions such as control that reset and the wearable electronic product that adopts this multifunctional control circuit to design.
Background technology
Along with the progress that science and technology is maked rapid progress, worn by electronic product and become possibility, and be more and more subject to consumers in general, particularly the favor of young consumers, the generation of this kind of wearable electronic product will change the life style of people.
Current wearable electronic product is more and more intelligent, and intelligentized shortcoming needs to adopt microprocessor to control, and can there is the problem that microprocessor crashes thus.Once microprocessor crashes, just need reset circuit and carry out power-off, restart microprocessor.Therefore, in the circuit design of wearable electronic product, need specialized designs reset circuit to realize the reset function of circuit system.The reset circuit be applied at present in wearable electronic product needs to design the reset control that independent reset key carries out circuit system, the circuit design mode of this many buttons not only can cause the increase of electronic product volume, brings some inconvenience also can to the control operation of user.
In addition, in current a lot of wearable electronic product, also add NFC(near field communication (NFC)) function, be used for realizing the functions such as ID identification, wireless pairing connection, simple data communication, to meet the user demand of consumer.
Current wearable electronic product, the chargeable lithium polymer battery of most employing is powered, and by cell package at interiors of products.The key request of electronic product is dressed in low-power consumption, thus no time require complete power-off, reduce electric energy loss; Require start rapidly when using, and many times also need to be controlled by the start of NFC functional realiey.In addition, as far as possible the reducing of small product size, user's control operation mode simplify as far as possible and water-proof function is also three requirements of wearable electronic product.Above everyway requires that wearable electronic product has less button and mechanically actuated parts.
Summary of the invention
The present invention, in order to simplify the circuit structure of electronic product, the control operation of person easy to use, proposes a kind of one-touch multifunctional control circuit, only need arrange a button, can complete multiple control function.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of one-touch multifunctional control circuit, comprises power supply, key circuit, power control circuit, reset circuit and processor; A button and the first current-limiting resistance is provided with, described button one end ground connection, the power supply described in the other end is connected by the first current-limiting resistance in described key circuit; Described button is connected power control circuit with the intermediate node of the first current-limiting resistance, and described power control circuit is connected according to the folding condition of button or cut off the current supply circuit of processor; The first on-off element and capacitor charge and discharge circuit is provided with in described reset circuit, described capacitor charge and discharge circuit connects the intermediate node of described button and the first current-limiting resistance, folding condition according to button carries out charge and discharge control to the electric capacity in capacitor charge and discharge circuit, described electric capacity connects the first on-off element, the charge and discharge control first on-off element break-make of described electric capacity generates control signal, controls power control circuit and cuts off the current supply circuit of processor or keep current state.
Further, in described power control circuit, be provided with second switch element and the 3rd on-off element; The conducting of described second switch element low level, its switch ways is connected between power supply and the energization pins of processor, and control end by the switch ways ground connection of the 3rd on-off element, and connects the intermediate node of described button and the first current-limiting resistance; The button detection pin of described processor connects the intermediate node of described button and the first current-limiting resistance, detects the folding condition of button, and then generates the control end that switching on and shutting down signal exports the 3rd on-off element to.
Preferably, described 3rd on-off element high level conducting, between its switch ways and the control end of second switch element, be connected with divider resistance, described button is connected the intermediate node of the switch ways of described divider resistance and the 3rd on-off element with the intermediate node of the first current-limiting resistance.
Further again, described first on-off element low level conducting, the electric capacity described in its control end connects, switch ways is connected between the control end of power supply and second switch element.
Further, the first diode in parallel and discharge resistance is also provided with in described capacitor charge and discharge circuit, the anode of described first diode connects the intermediate node of described button and the first current-limiting resistance, and negative electrode connects the control end of described electric capacity and the first on-off element.
Preferably, described first on-off element is a P channel MOS tube, and described second switch element is the 2nd P channel MOS tube, and described 3rd on-off element is N-channel MOS pipe; The electric capacity described in grid connection of a described P channel MOS tube, the power supply described in source electrode connects, the grid of drain electrode connection the 2nd P channel MOS tube; The power supply described in source electrode connection of described 2nd P channel MOS tube, drain electrode connects the energization pins of described processor, and grid connects the drain electrode of N-channel MOS pipe by described divider resistance, and by the power supply described in the connection of another divider resistance; The source ground of described N-channel MOS pipe, grid connects the pin of described processor output switch machine signal; The drain electrode of described N-channel MOS pipe connects the anode of the second diode, and the negative electrode of the second diode connects the intermediate node of described button and the first current-limiting resistance.
In order to realize NFC function, in described one-touch multifunctional control circuit, be also provided with NFC circuit; Described NFC circuit sensed NFC device close to time, the detection pin putting NFC circuit is low level, power supply described in described detection pin is connected by the second current-limiting resistance, and the negative electrode detecting pin and the 3rd diode respectively with the NFC of processor is connected, the anode of the 3rd diode connects power control circuit, controls power control circuit and cuts off the current supply circuit of processor or keep current state.
In order to realize the power up function that charges, in described one-touch multifunctional control circuit, being also provided with power charging circuit, comprising charging terminal and bleeder circuit; The charging voltage inputted by described charging terminal is via after bleeder circuit dividing potential drop, and the charging of the control end and processor that export described 3rd on-off element respectively to detects pin.
In order to ensure the correct flow direction of electric current, the control end of described 3rd on-off element, respectively by the pin of the 4th diode connection handling device output switch machine signal, detects pin by the charging of the 5th diode connection handling device.
Based on above-mentioned one-touch multifunctional control circuit, the invention allows for a kind of wearing electronic product adopting described one-touch multifunctional control circuit design, comprise power supply, key circuit, power control circuit, reset circuit and processor; A button and the first current-limiting resistance is provided with, described button one end ground connection, the power supply described in the other end is connected by the first current-limiting resistance in described key circuit; Described button is connected power control circuit with the intermediate node of the first current-limiting resistance, and described power control circuit is connected according to the folding condition of button or cut off the current supply circuit of processor; The first on-off element and capacitor charge and discharge circuit is provided with in described reset circuit, described capacitor charge and discharge circuit connects the intermediate node of described button and the first current-limiting resistance, folding condition according to button carries out charge and discharge control to the electric capacity in capacitor charge and discharge circuit, described electric capacity connects the first on-off element, generating control signal by controlling the first on-off element break-make, controlling power control circuit and cut off the current supply circuit of processor or keep current state; Described power supply is battery.
Compared with prior art, advantage of the present invention and good effect are: one-touch multifunctional control circuit of the present invention is by carrying out ingehious design to circuit structure, only need arrange a button can realize switching on and shutting down control and reset controlling dual-use function to system, not only simplify circuit structure, be convenient to the Miniaturization Design of product, and facilitate the control operation of user, improve the experience of consumer.In addition, by designing NFC circuit and power charging circuit in circuit system, thus while make electronic product have NFC function and rechargeable function, achieve NFC arousal function and the charging power up function of system, the diversity of significant increase electronic product start-up mode and dirigibility.Described one-touch multifunctional control circuit is applied in the circuit design of dressing electronic product, not only small product size can be reduced, simplify consumer's operation, facilitate waterproofing design, and after product shutdown, system can auto-breaking, can save the consumption of battery electric quantity thus to greatest extent, extends the service time of battery.
After reading the detailed description of embodiment of the present invention by reference to the accompanying drawings, the other features and advantages of the invention will become clearly.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of a kind of embodiment of one-touch multifunctional control circuit proposed by the invention;
Fig. 2 is the physical circuit schematic diagram of a kind of embodiment of one-touch multifunctional control circuit proposed by the invention;
Fig. 3 is the physical circuit schematic diagram of another embodiment of one-touch multifunctional control circuit proposed by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
The one-touch multifunctional control circuit of the present embodiment is in order to simplify circuit structure, reduce the use of mechanically actuated parts as far as possible, in circuit design process, adopt one-touch design proposal, the compatible completion system switching on and shutting down control of a button and system reset is utilized to control dual-use function, thus while facilitating product Miniaturization Design and waterproofing design, the control operation of user can be made to simplify as much as possible, improve the experience of user.
In order to realize above-mentioned purpose of design, the present embodiment devises key circuit, reset circuit, power control circuit, processor and the power supply for each electricity consumption load supplying in circuit system in circuit system, shown in Figure 1.Wherein, only can arrange a button in key circuit, the switching on and shutting down control and the system reset that are used for system control.Described key circuit is connected with power control circuit and reset circuit respectively, when user's trigger key carries out switching on and shutting down operation, power control circuit is according to the folding condition of button, connect or cut off the current supply circuit of processor, the such as power supply transmission line of power supply connection handling device energization pins, carries out break-make control to the power supply of processor.Processor is after the operation that powers on, and other functional circuit startup optimization in control system, the start process of completion system circuit, responds the power-on operation of user.In the process of system cloud gray model, if when the situations such as processor appearance is crashed, system works is abnormal need to reset, user can adopt the long mode by described button, start reset circuit and generate control signal, transfer to power control circuit, by the mode that short time cut-out processor is powered, control system circuit power-off reset.
In the process that circuit system start runs, processor is utilized to detect the folding condition of described button in real time, if detect, the button short time closes or triggers for a long time the closed time when exceeding the unused time of setting, then can be produced by processor and export off signal to power control circuit, control the current supply circuit that power control circuit cuts off processor, realize the power-off operation to circuit system.
Meanwhile, processor can also adopt the mode detecting button folding condition, judges whether the pattern selected by the start of current control system is button power on mode.
In order to improve diversity and the dirigibility of system boot control, the present embodiment is also preferred designs NFC circuit and power charging circuit further in circuit system, connect described power control circuit respectively, and then while completing NFC function and charge function, realize NFC arousal function and the charging power up function of system, shown in Figure 1.
Below in conjunction with Fig. 2, Fig. 3, the physical circuit assembling structure of the one-touch multifunctional control circuit that the present embodiment proposes and principle of work thereof are set forth in detail.
Shown in Figure 2, in the key circuit of the present embodiment, major design has button SW1 and the first current-limiting resistance R1.Described button SW1 preferably adopts and keeps the mechanical key of function to carry out the specific design of circuit system without pressing.By one end ground connection of described button SW1, the other end connects power supply by the first current-limiting resistance R1.For portable type electronic product or wearable electronic product, described power supply specifically can refer to that battery BAT(preferably adopts rechargeable battery), the direct supply VBAT utilizing battery BAT to export powers for circuit system.
In the power control circuit of the present embodiment, major design has two on-off elements, one is the second switch element Q2 with low level on state characteristic, such as P channel MOS tube or PNP type triode etc., be connected between direct supply VBAT and the energization pins VDD of processor MCU, for carrying out break-make control to the current supply circuit of processor MCU; Another is the 3rd on-off element Q3 with high level on state characteristic, such as N-channel MOS pipe or NPN type triode etc., for when trigger key SW1 carries out power-on operation, after button SW1 lifts, maintain second switch element Q2 and keep conducting state, enable battery BAT be continuously processor MCU and power.
Specifically, can the switch ways of described second switch element Q2 be connected between described direct supply VBAT and the energization pins VDD of processor MCU, control end connects the switch ways of the 3rd on-off element Q3 by divider resistance R7 mono-aspect, and passes through the switch ways ground connection of the 3rd on-off element Q3; Connect the intermediate node of described button SW1 and the first current-limiting resistance R1 on the other hand, close at trigger key SW1, during the start of control system circuit, utilize the closure state of button SW1, control the conducting of second switch element Q2 low level, and then connect the current supply circuit of processor MCU, processor MCU is powered on operation.After decontroling button SW1 user, processor MCU still can continue to power on, keep running status, a wherein road I/O mouth of selection processor MCU detects pin SWITCH_DETECTION as button, connected the intermediate node of described button SW1 and the first current-limiting resistance R1 by resistance R5, the folding condition of button SW1 is detected.If after processor MCU powers on, when detecting that button SW1 closes by its button detection pin SWITCH_DETECTION, namely when processor MCU detects that its button detection pin SWITCH_DETECTION is low level, then judge that this time start is as button power on mode, generate the starting-up signal of high level, exported to the control end of the 3rd on-off element Q3 by the power control pin POWER_CONTROL of processor MCU, second switch element Q2 maintenance conducting state is controlled by controlling the 3rd on-off element Q3 conducting, and then guarantee that battery BAT can be continuously processor MCU and power, ensure that circuit system continues energising and runs.
Below for P channel MOS tube as described second switch element Q2, N-channel MOS pipe as the 3rd described on-off element Q3, the concrete assembling structure of power control circuit and principle of work thereof are described in detail.
Shown in Figure 2, the source electrode of P channel MOS tube Q2 is connected the positive pole of battery BAT, the energization pins VDD of drain connections reason device MCU, grid connects the source electrode of himself by divider resistance R6, and connects the drain electrode of N-channel MOS pipe Q3 by divider resistance R7.By the power control pin POWER_CONTROL of the grid connection handling device MCU of described N-channel MOS pipe Q3, source ground, the anode of drain electrode connection second diode D2, and the intermediate node of button SW1 and the first current-limiting resistance R1 is connected by the negative electrode of the second diode D2.
The principle of work of described power control circuit is: when circuit system is in off-mode, if user pushes button, SW1 makes it close, and now the second diode D2 conducting, drags down the grid potential of P channel MOS tube Q2, makes P channel MOS tube Q2 saturation conduction.After P channel MOS tube Q2 conducting, the direct supply VBAT exported by battery BAT transfers to the energization pins VDD of processor MCU via the source electrode of P channel MOS tube Q2 and drain electrode, for processor MCU provides the working power needed for it, processor MCU is powered on operation.
Before button SW1 unclamps, processor MCU detects the low and high level state that its button detects pin SWITCH_DETECTION, and described button detects pin SWITCH_DETECTION connects described button SW1 and the first current-limiting resistance R1 intermediate node by resistance R5.If the current potential that button detects pin SWITCH_DETECTION is low, then represent that button SW1 closes, decision-making system will enter open state, now processor MCU exports the starting-up signal of high level by its power control pin POWER_CONTROL, transfer to the grid of N-channel MOS pipe Q3, control N-channel MOS pipe Q3 saturation conduction, the grid potential maintaining P channel MOS tube Q2 is low level.Now, even if user unclamps button SW1, button SW1 is disconnected, due to N-channel MOS pipe Q3 saturation conduction, therefore the grid potential of P channel MOS tube Q2 is still low, and P channel MOS tube Q2 keeps conducting state, continues the current supply circuit of connected processor MCU, ensure processor MCU continuous service, and then control system circuit is in start running status.
After button SW1 disconnects, the second diode D2 oppositely ends, and the electric current exported by battery BAT can be avoided thus to transfer to N-channel MOS pipe Q3 via current-limiting resistance R1, and then while guarantee electric current correctly flows to, reduces the Overall Power Consumption of system.
Under circuit system is in open state, if user needs control system to shut down, then can adopt short by or long perform power-off operation by the mode of button SW1.When processor MCU under operation, detect that the current potential that its button detects pin SWITCH_DETECTION is low level by high level saltus step, and keep low level time very short (namely user is short shuts down by button SW1) or the shutdown triggered time t1(that keeps the low level time to exceed setting namely to shut down by button SW1 with the head of a household) time, judge that user performs power-off operation.Now, processor MCU, by the off signal of its power control pin POWER_CONTROL output low level, transfers to the grid of N-channel MOS pipe Q3, controls N-channel MOS pipe Q3 cut-off.After user unclamps button SW1, the grid potential of P channel MOS tube Q2 becomes high level, and P channel MOS tube Q2 proceeds to cut-off state, and cut off the current supply circuit of processor MCU, make processor MCU power-off, circuit system is out of service, enters off-mode.
More than achieve the keyswitch machine function of circuit system.
The first on-off element Q1 and capacitor charge and discharge circuit is provided with in the reset circuit of the present embodiment, described capacitor charge and discharge circuit is connected the intermediate node of described button SW1 and the first current-limiting resistance R1, the folding condition according to button SW1 carries out charge and discharge control to the electric capacity C1 in capacitor charge and discharge circuit.Described electric capacity C1 is connected the first on-off element Q1, generating control signal by controlling the first on-off element Q1 break-make, controlling the current supply circuit that power control circuit cuts off processor MCU, making processor MCU power-off reset; Or keep the current state of power control circuit, any impact is not produced on the current operating state of circuit system.
As a kind of preferred design of the present embodiment, described first on-off element Q1 preferably adopts a P channel MOS tube to carry out the specific design of circuit system.In described capacitor charge and discharge circuit, except being provided with described electric capacity C1, be also provided with the first diode D1 and discharge resistance R4, shown in Figure 2.The anode of described first diode D1 is connected the intermediate node of described button SW1 and the first current-limiting resistance R1, negative electrode connects the positive pole of electric capacity C1, and the minus earth of electric capacity C1, discharge resistance R4 is connected in parallel on the two ends of described first diode D1.The grid of described P channel MOS tube Q1 is connected the positive pole of electric capacity C1, source electrode connects the positive pole of battery BAT, and drain electrode connects the grid of P channel MOS tube Q2 in power control circuit.
When button SW1 is in off-state, first diode D1 conducting, the direct supply VBAT exported by battery BAT is charged to electric capacity C1 via the first diode D1 of the first current-limiting resistance R1 and conducting, the grid potential of P channel MOS tube Q1 is made to be high level, control P channel MOS tube Q1 ends, and does not produce any impact to power control circuit.When deadlock or circuit system operation irregularity appear in processor MCU, user can adopt the long mode control system circuit reset by described button SW1.Specifically, when with the head of a household by (compressing time is set as t2, and the value of t2 should be determined according to the discharge time of electric capacity C1, and t2<t1) during described button SW1, the electric charge in electric capacity C1 is released over the ground by discharge resistance R4 and button SW1.Along with the carrying out of electric discharge, the voltage of electric capacity C1 reduces, and makes the grid voltage of P channel MOS tube Q1 reduce and proceed to conducting state.When after P channel MOS tube Q1 conducting, direct supply VBAT transfers to the grid of P channel MOS tube Q2 by P channel MOS tube Q1, makes the grid voltage of P channel MOS tube Q2 raise and enter cut-off state, and then cuts off the current supply circuit of processor MCU, make the power down of processor MCU short time, system reset.
Certainly, the on-off element that described first on-off element Q1 also can select PNP type triode etc. to have low level on state characteristic carries out the specific design of circuit system, and the present embodiment is not limited in above citing.
In addition, in order to make system have NFC function, the present embodiment is also designed with NFC circuit in described circuit system, forms primarily of NFC coil NFC_ANTENNA and connected NFC chip U1, for carrying out short haul connection with the NFC device of outside, realize data transmission.
The present embodiment, in order to improve the dirigibility of circuit system start-up mode, sets up the parts such as the second current-limiting resistance R2, the 3rd diode D3 in described NFC circuit, coordinates processor MCU to realize the NFC arousal function of system, shown in Figure 2.The detection pin FD of NFC chip U1 is connected the positive pole of battery BAT by the second current-limiting resistance R2, and the power control circuit described in being connected by the 3rd diode D3, such as the negative electrode of the 3rd diode D3 is connected the detection pin FD of NFC chip U1, anode connects the intermediate node of N-channel MOS pipe Q3 and divider resistance R7.
When NFC chip U1 by NFC coil NFC_ANTENNA sense outside have NFC device close to time, respond to output AC pulse signal by NFC coil NFC_ANTENNA, transfer to described NFC chip U1.In order to avoid problem of start-up by mistake appears in circuit system, described NFC chip U1 is preferably set when detecting that the effective impulse exported by NFC coil NFC_ANTENNA reaches setting number, such as during 50 pulses, judge that the current user of being is using NFC device to scan native system, instead of close momently.Now, it is low level that NFC chip U1 puts its detection pin FD, makes the 3rd diode D3 conducting, and then drag down the grid potential of P channel MOS tube Q2 in power control circuit, make P channel MOS tube Q2 saturation conduction, connect the current supply circuit of processor MCU, processor MCU is powered on operation.After processor MCU powers on, detect the low and high level state that its NFC detects pin NFC_DETECTION, the NFC detection pin NFC_DETECTION of placement processor MCU is directly connected or is connected the detection pin FD of NFC chip U1 by resistance R3.When processor MCU detects that its NFC detection pin NFC_DETECTION is low level, and button is when to detect pin SWITCH_DETECTION be high level, judge that this time start is as NFC power on mode, and then the starting-up signal of high level is exported by the power control pin POWER_CONTROL of processor MCU, control N-channel MOS pipe Q3 saturation conduction, then the grid potential maintaining P channel MOS tube Q2 keeps low level, the start process of completion system circuit, the NFC realizing circuit system wakes power up function up.
After this, if user thinks that control system circuit shuts down, can adopt short by or the long mode by button SW1, power-off operation is carried out to circuit system.
In order to make circuit system possess charging power up function further, the present embodiment arranges the bleeder circuit be made up of resistance R8, R9 further in the power charging circuit of system, and the charging terminal CHARGING of connected system circuit is shown in Figure 3.When external power source is the battery BAT charging accumulation of energy in circuit system by charging terminal CHARGING, the charging voltage inputted by charging terminal CHARGING is simultaneously via resistance R8, after R9 dividing potential drop, the charging of the control end (such as the grid of N-channel MOS pipe Q3) and processor MCU that export the 3rd on-off element respectively to detects pin CHARGE_DETECTION, the grid potential of P channel MOS tube Q2 is dragged down on the one hand by controlling N-channel MOS pipe Q3 conducting, make P channel MOS tube Q2 conducting, connect the current supply circuit of processor MCU, the start of control system circuit runs, it is high level that charging on the other hand by putting processor MCU detects pin CHARGE_DETECTION, and then realizes the detection of processor MCU to current boot-mode.That is, after processor MCU powers on operation, if detect, its charging detects pin CHARGE_DETECTION is high level, when its button detection pin SWITCH_DETECTION is also high level, then judges this time to start shooting as charging power on mode.
In order to ensure the correctness of current direction, the present embodiment is also provided with the 4th diode D4 and the 5th diode D5 in described circuit system, shown in Figure 3.By the power control pin POWER_CONTROL of the anode connection handling device MCU of the 4th diode D4, negative electrode connects the grid of N-channel MOS pipe Q3, can ensure that the switching on and shutting down signal exported by the power control pin POWER_CONTROL of processor MCU can not by the impact of charging voltage thus.The anode of the 5th diode D5 is detected pin CHARGE_DETECTION by the charging of resistance R8 connection handling device MCU, negative electrode connects the grid of N-channel MOS pipe Q3, avoid the high level starting-up signal exported by the power control pin POWER_CONTROL of processor MCU to transfer to charging mistakenly thus and detect pin CHARGE_DETECTION, cause processor MCU to the erroneous judgement of system state of charge.
In the present embodiment, described first diode D1 preferably adopts the switching diode of low reverse current leakage, and such as model is the diode of CMAD6001, effect is after button SW1 unclamps, rapid charge loop is provided, when preventing consecutive intervals by button SW1, causes system reset.
Diode D2, D3, D4, D5 preferably adopt schottky diode, and such as model is four switching diode devices of 1PS79SB30; Or the second diode D2 and the 3rd diode D3 is replaced to the duodiode device of a common cathode, by the duodiode device that the 4th diode D4 and the 5th diode D5 replaces to a common anode pole, the designing requirement of circuit system can be met equally.In the present embodiment, the effect of described second diode D2 and the 3rd diode D3 prevents NFC detection signal and button trigger pip from producing interference mutually, and enable processor MCU judge the detection pin FD of NFC chip U1 and the state of button SW1 exactly.The effect of the 4th diode D4 and the 5th diode D5 prevents charging voltage from impacting processor MCU, and enable processor MCU judge charged state exactly.
The one-touch multifunctional control circuit of the present embodiment is applied in and dresses in electronic product, start, shutdown, reset function can be realized by a button, and wake start up by NFC device, and there is charging power up function, greatly facilitate the routine use of user.Meanwhile, the power-off of system closedown back loading, farthest can save battery consumption thus, extends the serviceable life of battery.
Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Claims (9)
1. an one-touch multifunctional control circuit, comprises power supply, key circuit, power control circuit, reset circuit and processor; It is characterized in that: in described key circuit, be provided with a button and the first current-limiting resistance, described button one end ground connection, the power supply described in the other end is connected by the first current-limiting resistance; Described button is connected power control circuit with the intermediate node of the first current-limiting resistance, and described power control circuit is connected according to the folding condition of button or cut off the current supply circuit of processor; The first on-off element and capacitor charge and discharge circuit is provided with in described reset circuit, described capacitor charge and discharge circuit connects the intermediate node of described button and the first current-limiting resistance, folding condition according to button carries out charge and discharge control to the electric capacity in capacitor charge and discharge circuit, described electric capacity connects the first on-off element, the charge and discharge control first on-off element break-make of described electric capacity generates control signal, controls power control circuit and cuts off the current supply circuit of processor or keep current state;
Second switch element and the 3rd on-off element is provided with in described power control circuit; The conducting of described second switch element low level, its switch ways is connected between power supply and the energization pins of processor, and control end by the switch ways ground connection of the 3rd on-off element, and connects the intermediate node of described button and the first current-limiting resistance; The button detection pin of described processor connects the intermediate node of described button and the first current-limiting resistance, detects the folding condition of button, and then generates the described 3rd on-off element break-make of switching on and shutting down signal control.
2. one-touch multifunctional control circuit according to claim 1, is characterized in that: described second switch element and the 3rd on-off element include switch ways and the control end for controlling described switch ways break-make; Described 3rd on-off element high level conducting, between its switch ways and the control end of second switch element, be connected with divider resistance, described button is connected the intermediate node of the switch ways of described divider resistance and the 3rd on-off element with the intermediate node of the first current-limiting resistance.
3. one-touch multifunctional control circuit according to claim 2, is characterized in that: described first on-off element comprises switch ways and the control end for controlling described switch ways break-make; Described first on-off element low level conducting, the electric capacity described in its control end connects, switch ways is connected between the control end of power supply and second switch element.
4. one-touch multifunctional control circuit according to claim 3, it is characterized in that: in described capacitor charge and discharge circuit, be also provided with the first diode in parallel and discharge resistance, the anode of described first diode connects the intermediate node of described button and the first current-limiting resistance, and negative electrode connects the control end of described electric capacity and the first on-off element.
5. one-touch multifunctional control circuit according to claim 4, is characterized in that: described first on-off element is a P channel MOS tube, and described second switch element is the 2nd P channel MOS tube, and described 3rd on-off element is N-channel MOS pipe; The electric capacity described in grid connection of a described P channel MOS tube, the power supply described in source electrode connects, the grid of drain electrode connection the 2nd P channel MOS tube; The power supply described in source electrode connection of described 2nd P channel MOS tube, drain electrode connects the energization pins of described processor, and grid connects the drain electrode of N-channel MOS pipe by described divider resistance, and by the power supply described in the connection of another divider resistance; The source ground of described N-channel MOS pipe, grid connects the pin of described processor output switch machine signal; The drain electrode of described N-channel MOS pipe connects the anode of the second diode, and the negative electrode of the second diode connects the intermediate node of described button and the first current-limiting resistance.
6. one-touch multifunctional control circuit according to any one of claim 1 to 5, is characterized in that: in described one-touch multifunctional control circuit, be also provided with NFC circuit; Described NFC circuit sensed NFC device close to time, the detection pin putting NFC circuit is low level, power supply described in described detection pin is connected by the second current-limiting resistance, and the negative electrode detecting pin and the 3rd diode respectively with the NFC of processor is connected, the anode of the 3rd diode connects power control circuit, controls power control circuit and cuts off the current supply circuit of processor or keep current state.
7. one-touch multifunctional control circuit according to any one of claim 1 to 5, is characterized in that: in described one-touch multifunctional control circuit, be also provided with power charging circuit, comprise charging terminal and bleeder circuit; The charging voltage inputted by described charging terminal is via after bleeder circuit dividing potential drop, and the charging of the control end and processor that export described 3rd on-off element respectively to detects pin.
8. one-touch multifunctional control circuit according to claim 7, it is characterized in that: the control end of described 3rd on-off element, respectively by the pin of the 4th diode connection handling device output switch machine signal, detects pin by the charging of the 5th diode connection handling device.
9. dress an electronic product, it is characterized in that: be provided with the one-touch multifunctional control circuit any one of claim 1 to 8 as described in claim, described power supply is battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063820.5A CN103809492B (en) | 2014-02-25 | 2014-02-25 | One-touch multifunctional control circuit and wearing electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063820.5A CN103809492B (en) | 2014-02-25 | 2014-02-25 | One-touch multifunctional control circuit and wearing electronic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103809492A CN103809492A (en) | 2014-05-21 |
| CN103809492B true CN103809492B (en) | 2016-03-16 |
Family
ID=50706436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063820.5A Active CN103809492B (en) | 2014-02-25 | 2014-02-25 | One-touch multifunctional control circuit and wearing electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103809492B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076889A (en) * | 2014-05-28 | 2014-10-01 | 赵海林 | Electronic device and default configuration restoring method based on same |
| CN104020694A (en) * | 2014-06-16 | 2014-09-03 | 法视网络传媒技术(北京)有限公司 | Energy-saving wearable device capable of being triggered through one key, mobile terminal, and triggering method and device |
| CN104104371A (en) * | 2014-06-27 | 2014-10-15 | 青岛歌尔声学科技有限公司 | Electronic product switching circuit |
| SG11201703084TA (en) | 2014-11-12 | 2017-05-30 | Intel Corp | Flexible system-in-package solutions for wearable devices |
| CN106292985B (en) * | 2015-05-28 | 2019-11-08 | 比亚迪股份有限公司 | The on/off circuit and Bluetooth electronic devices of Bluetooth electronic devices |
| WO2017181369A1 (en) * | 2016-04-20 | 2017-10-26 | 深圳市锐明技术股份有限公司 | Motor vehicle, on-board security device and power-on circuit thereof |
| CN106095040A (en) * | 2016-06-07 | 2016-11-09 | 青岛歌尔声学科技有限公司 | A kind of key control circuit and electronic product |
| CN106788387B (en) * | 2016-12-15 | 2024-02-13 | 北京小鸟看看科技有限公司 | Key multiplexing circuit for electronic equipment and electronic equipment |
| CN106877078A (en) * | 2017-02-23 | 2017-06-20 | 惠州市德赛工业研究院有限公司 | Terminal connection circuit and its method for wearable device |
| CN107561991A (en) * | 2017-09-30 | 2018-01-09 | 深圳麦格米特电气股份有限公司 | A kind of switching on and shutting down management circuit and terminal |
| CN107809229B (en) * | 2017-11-20 | 2024-04-02 | 歌尔科技有限公司 | Multi-key combined hardware reset circuit and electronic product |
| CN109951179B (en) * | 2017-12-19 | 2022-12-23 | 炬芯科技股份有限公司 | Startup and shutdown circuit |
| CN109936354B (en) * | 2017-12-19 | 2023-03-28 | 炬芯科技股份有限公司 | Startup and shutdown circuit |
| CN109194317B (en) * | 2018-09-05 | 2022-08-16 | 潍坊歌尔电子有限公司 | Reset circuit and wearable equipment |
| CN109884935A (en) * | 2018-11-30 | 2019-06-14 | 珠海趣印科技有限公司 | A kind of multivoltage multifunctional multiplexing reset switch latching circuit |
| CN112398187B (en) * | 2019-08-19 | 2023-03-10 | Oppo广东移动通信有限公司 | Wearable device, charging control method, and storage medium |
| CN111613041A (en) * | 2020-06-11 | 2020-09-01 | 南京千云井建筑智能科技有限公司 | Control system for realizing startup and shutdown through NFC or charging signal |
| CN112327696B (en) * | 2020-11-05 | 2022-04-12 | 歌尔科技有限公司 | Key control circuit |
| CN114567310A (en) * | 2020-11-27 | 2022-05-31 | 中兴通讯股份有限公司 | Long-term reset circuit of switching power supply, printed circuit board and electronic equipment |
| CN112968497A (en) * | 2021-03-10 | 2021-06-15 | 深圳宝新创科技股份有限公司 | Battery power supply control circuit and electronic equipment |
| CN113747079B (en) * | 2021-09-27 | 2023-04-18 | 上海布鲁可积木科技有限公司 | Camera drive control circuit, layout structure, camera and toy |
| CN113891507A (en) * | 2021-10-15 | 2022-01-04 | 肖海辉 | Direct current thermal control circuit and working process thereof |
| CN115016624A (en) * | 2022-05-27 | 2022-09-06 | 维沃移动通信有限公司 | Electronic equipment and electronic equipment set |
| CN115016625A (en) * | 2022-05-31 | 2022-09-06 | 维沃移动通信有限公司 | Electronic equipment control method, electronic equipment and electronic equipment set |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4385872B2 (en) * | 2004-07-01 | 2009-12-16 | ソニー株式会社 | Power supply control circuit and electronic device |
| US8203320B2 (en) * | 2009-01-07 | 2012-06-19 | Linear Technology Corporation | Switching mode converters |
| CN203164610U (en) * | 2012-12-24 | 2013-08-28 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device with NFC function |
| CN103297014A (en) * | 2013-04-28 | 2013-09-11 | 青岛歌尔声学科技有限公司 | Startup and shutdown circuit and electronic device |
| CN203705875U (en) * | 2014-02-25 | 2014-07-09 | 青岛歌尔声学科技有限公司 | One-button multifunctional control circuit and wearable electronic product |
-
2014
- 2014-02-25 CN CN201410063820.5A patent/CN103809492B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103809492A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103809492B (en) | One-touch multifunctional control circuit and wearing electronic product | |
| CN203705875U (en) | One-button multifunctional control circuit and wearable electronic product | |
| CN207382047U (en) | Detection of power loss and main power supply switching system in intelligent domestic system | |
| CN201340528Y (en) | Zero-power time-limited standby control circuit of household appliances | |
| CN101770248B (en) | Intermittent power supply micropower standby control circuit | |
| CN104731305B (en) | Shutdown control circuit and the electronic product with the shutdown control circuit | |
| CN205081497U (en) | Cell -phone charger according to charger temperature automatic adjustment charging current | |
| CN107769317A (en) | Control circuit, the battery and battery control method with the control circuit | |
| CN106203582B (en) | A kind of electronic equipment | |
| CN105629825A (en) | Management method and management system of power supply system of wearable intelligent device | |
| CN107221988A (en) | The power circuit and its control method of a kind of under-voltage protection | |
| CN203423331U (en) | Multifunctional intelligent safety power supply socket without standby loss | |
| CN201397454Y (en) | Intermittence-type power-supply micro-power-consumption standby control circuit | |
| CN205051670U (en) | Fall electricity from opening control circuit | |
| CN204886393U (en) | A power control system for intelligent gas meter | |
| CN207490595U (en) | Power-supplying circuit and electrical equipment | |
| CN206259869U (en) | Temperature measuring equipment and electromagnetic heater | |
| CN205721214U (en) | A kind of intelligent soy milk grinder control circuit | |
| CN105938539B (en) | Smart card keeps the method and smart card of working condition during marching into the arena again | |
| WO2021103098A1 (en) | Power consumption control device and intelligent device | |
| CN113639469A (en) | Electric water heater with intelligent protection automatic complete machine out-of-work function | |
| CN205283163U (en) | Mobile device lithium battery supply manages circuit | |
| CN206628878U (en) | A kind of intelligent charger based on time-of-use tariffs | |
| CN105186230A (en) | Smart energy-efficient power wiring board | |
| CN204720964U (en) | Intelligent electric machine comprehensive protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |