CN103634431A - Mobile terminal with pressure ring-off function - Google Patents
Mobile terminal with pressure ring-off function Download PDFInfo
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- CN103634431A CN103634431A CN201310650195.XA CN201310650195A CN103634431A CN 103634431 A CN103634431 A CN 103634431A CN 201310650195 A CN201310650195 A CN 201310650195A CN 103634431 A CN103634431 A CN 103634431A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a mobile terminal with a pressure ring-off function. The mobile terminal comprises a pressure sensor module, an amplifier module and a signal processing module. The pressure sensor module is used for sensing pressure and generating voltage signals according to the pressure; the amplifier module is used for amplifying and stabilizing the voltage signals output by the pressure sensor module; the signal processing module is used for analyzing and processing the voltage signals output by the amplifier module and judging whether to cut off the ring or not according to analysis results; the pressure sensor module, the amplifier module and the signal processing module are connected in sequence. Ring off is realized under pressure, users do not need to touch touch-screens, and thus failure in ring off due to insensitive response of the touch-screens is avoided, user experiences are improved, power consumption generated at the touch moment is prevented, and endurance of batteries is prolonged.
Description
Technical field
The present invention relates to communication terminal, particularly a kind of by the mobile terminal of pressure kill-call.
Background technology
No matter large-screen is at touch control operation or in demonstration if touching mobile phone, all provide good user to experience.At present, mobile phone screen is increasing, generally, 4.7 inches of left and right, even reaches more than 5.0 inches.The screen of mobile phone is larger, and the electric weight of its power consumption and power consumption also can increase, and in when call, as touch screen not, its maximum current consuming is less than 300mA; If touch screen, more than its, power consumption reached 600mA moment, is 2 times of left and right of power consumption during touch screen not substantially, while conversing as seen, institute's power consumption is very large the moment of touch screen.Therefore, the touch screen operation when reducing as much as possible mobile phone communication and hanging up, by the moment power consumption that reduces call touch screen and bring.
In addition, if mobile phone communication frequency ratio is higher, or the air time is long, will on touch-screen, assemble a large amount of steam, special in the situation that ambient temperature is lower, due to moisture convergence, can cause touch-screen sluggish, when hanging up the telephone, can not finish call, need repeatedly touch screen to realize and hang up the telephone, directly increase power consumption, the power consumption of battery is accelerated, and the health check-up of user's touch control operation is poor.
Thereby prior art need to improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of by the mobile terminal of pressure kill-call, can carry out dropped calls by pressure, without Touch Screen, solve the reaction of prior art touch-screen insensitive, causing cannot kill-call, and the large problem of power consumption during call touch screen.
In order to achieve the above object, the present invention has taked following technical scheme:
By a mobile terminal for pressure kill-call, it comprises:
Pressure sensitive module, for induction pressure, and produces voltage signal according to pressure;
Amplification module, for amplifying the voltage signal of exporting with steady pressure induction module;
Signal processing module, for the voltage signal of amplification module output is carried out to analyzing and processing, and judges whether dropped calls according to analysis result;
Described pressure sensitive module, amplification module are connected successively with signal processing module.
In the described mobile terminal that passes through pressure kill-call, described pressure sensitive module comprises:
Unbalance sensing unit, for induction pressure;
Semiconductor resistor module, for producing voltage signal when unbalance sensing unit senses pressure;
Described unbalance sensing unit, semiconductor resistor module are connected successively with amplification module.
In the described mobile terminal that passes through pressure kill-call, described pressure sensitive module also comprises: for the constant current unit of the output current of stabilization of semiconductor resistance module; Described constant current unit connects semiconductor resistor module.
In the described mobile terminal that passes through pressure kill-call, described unbalance sensing unit comprises the first diode and the second diode, and the negative pole that the positive pole connection feeder ear of described the first diode, the negative pole of the first diode connect the positive pole of the second diode, the second diode connects semiconductor resistor module.
In the described mobile terminal that passes through pressure kill-call, described semiconductor resistor module comprises the first semiconductor resistor, the second semiconductor resistor, the 3rd semiconductor resistor and the 4th semiconductor resistor; One end of described the first semiconductor resistor connects the negative pole of the second diode, and the other end of the first semiconductor resistor connects amplification module by the second semiconductor resistor; One end of described the 3rd semiconductor resistor connects the negative pole of the second diode, and the other end of the 3rd semiconductor resistor connects amplification module by the 4th semiconductor resistor.
In the described mobile terminal that passes through pressure kill-call, described constant current unit comprises the 3rd diode and triode, and the positive pole of described the 3rd diode connects the base stage of described feeder ear and triode, the minus earth of the 3rd diode; The collector electrode of described triode connects one end of the negative pole of the second diode, one end of the first semiconductor resistor and the 3rd semiconductor resistor, the grounded emitter of triode.
In the described mobile terminal that passes through pressure kill-call, described amplification module comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
The positive input terminal of described the first operational amplifier connects one end of the other end and second semiconductor resistor of the first semiconductor resistor, the negative input end of described the first operational amplifier is connected successively the negative input end of the second operational amplifier, also by the 3rd resistance, connects the output of the first operational amplifier with the second resistance by the first resistance, the output of the first operational amplifier connects the positive input terminal of the 3rd operational amplifier; The positive input terminal of the second operational amplifier connects the other end of the 3rd semiconductor resistor and one end of the 4th semiconductor resistor, the negative input end of described the second operational amplifier connects the output of the second operational amplifier by described the 4th resistance, the output of described the second operational amplifier connects the negative input end of the 3rd operational amplifier by the 5th resistance, the negative input end of described the 3rd operational amplifier also connects the output of the 3rd operational amplifier by the 6th resistance, the output of the 3rd operational amplifier connects signal processing module.
In the described mobile terminal that passes through pressure kill-call, described amplification module also comprises:
The first filter unit, for carrying out filtering processing to the signal of the first operational amplifier output;
The second filter unit, for carrying out filtering processing to the signal of the second calculation amplifier output;
One end of described the first filter unit connects the output of the first operational amplifier, and the other end of the first filter unit connects the positive input terminal of the 3rd operational amplifier; One end of described the second filter unit connects the output of the second operational amplifier, and the other end of the second filter unit connects the negative input end of the 3rd operational amplifier.
In the described mobile terminal that passes through pressure kill-call, described signal processing module comprises:
Signal processor, for the voltage signal of amplification module output is carried out to analyzing and processing, and judges whether dropped calls according to analysis result;
Central processing unit, for the work of control signal processor;
The Input1 end of described signal processor connects the 3rd output of operational amplifier, the Input2 of signal processor end connects the GPIO_45 end of central processing unit, the Output end of signal processor connects the GPIO_44 end of central processing unit.
In the described mobile terminal that passes through pressure kill-call, also comprise interruption Tip element, for when the dropped calls, output information; Described interruption Tip element connects the Input1 end of signal processor.
Compared to prior art, provided by the invention by the mobile terminal of pressure kill-call, when finishing call, by pressure sensitive module induction pressure and produce voltage signal, after being amplified by amplification module, carry out analyzing and processing through signal processing module, when mobile terminal is during in talking state, dropped calls.The present invention carrys out dropped calls according to pressure, without user's touch-control touch-screen, has avoided touching screen reaction insensitive, the problem that cannot hang up the telephone, but also avoided the power consumption of touch screen moment, extended the cruising time of battery.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the present invention passes through the mobile terminal of pressure kill-call.
Fig. 2 is the circuit diagram that the present invention passes through the mobile terminal of pressure kill-call.
Embodiment
The invention provides a kind of mobile terminal of pressure kill-call that passes through, for making object of the present invention, technical scheme and effect clearer, clear and definite, referring to accompanying drawing, developing simultaneously, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the present invention is by the structured flowchart of the mobile terminal of pressure kill-call.Mobile terminal by pressure kill-call provided by the invention comprises: the pressure sensitive module 10, amplification module 20 and the signal processing module 30 that connect successively.Wherein, pressure sensitive module 10 is for induction pressure, and produces voltage signal according to pressure.Amplification module 20 is for amplifying the voltage signal of exporting with steady pressure induction module 10.Signal processing module 30 carries out analyzing and processing for the voltage signal that amplification module 20 is exported, and judges whether dropped calls according to analysis result.
Take smart mobile phone as example, the pressure sensitive part of described pressure sensitive module 10 can be arranged on the housing of smart mobile phone, if need to hang up the telephone after user receives calls, only need partly exert pressure in pressure sensitive, after pressure sensitive module 10 senses that pressure changes, produce voltage signal, this voltage signal amplifies and stablizes processing through amplification module 20, issue again described signal processing module 30, signal processing module 30 first needs to judge whether smart mobile phone is talking state, if untreated talking state, does not need processing this signal; If processing talking state, dropped calls.
See also Fig. 2, it is for the present invention is by the circuit diagram of the mobile terminal of pressure kill-call.Described pressure sensitive module 10 comprises: unbalance sensing unit 101 and semiconductor resistor module 102, described unbalance sensing unit 101, semiconductor resistor module 102 are connected successively with amplification module 20.Described unbalance sensing unit 101 is for induction pressure, and semiconductor resistor module 102 for producing voltage signal when unbalance sensing unit 101 senses pressure.
Wherein, described unbalance sensing unit 101 comprises the first diode D1 and the second diode D2, and the negative pole that the negative pole of positive pole connection feeder ear J1, the first diode D1 of described the first diode D1 connects the positive pole of the second diode D2, the second diode D2 connects semiconductor resistor module 102.During concrete enforcement, described the first diode D1 and the second diode D2 are the unbalance sensing device of pressure sensitive module 10, it can be installed on the housing of mobile terminal, when the first diode D1 and the second diode D2 are under pressure, the impact that semiconductor resistor module 102 is stressed, unbalance generation output voltage signal is squeezed.
Please again consult Fig. 1 and Fig. 2, described semiconductor resistor module 102 comprises the first semiconductor resistor R1, the second semiconductor resistor R2, the 3rd semiconductor resistor R3 and the 4th semiconductor resistor R4.One end of described the first semiconductor resistor R1 connects the negative pole of the second diode D2, and the other end of the first semiconductor resistor R1 connects amplification module 20 by the second semiconductor resistor R2; One end of described the 3rd semiconductor resistor R3 connects the negative pole of the second diode D2, and the other end of the 3rd semiconductor resistor R3 connects amplification module 20 by the 4th semiconductor resistor R4.
During concrete enforcement, the resistance equal and opposite in direction of described the first semiconductor resistor R1, the second semiconductor resistor R2, the 3rd semiconductor resistor R3 and the 4th semiconductor resistor R4, the circuit structure of its composition can sense that mobile terminal is when call, act on the effect of the power on mobile terminal, make pressure sensitive module 10 unbalance, produce the voltage signal due to pressure-acting output.
The pressure sensitive module 10 forming due to semiconductor resistor, when work, is subject to the impact of the temperature of its spontaneous and peripheral devices radiation, and its sensitivity also can be affected.When temperature reduces, the conductive capability of semiconductor resistor dies down, and resistance coefficient increases, and the sensitivity of sensor circuit is risen.When temperature raises, the conductive capability grow of semiconductor resistor, resistance coefficient declines, and the sensitivity of sensor circuit declines, and can affect like this output of pressure sensitive module 10.Due to the size of output signal and the resistance of semiconductor resistor proportional, pressure sensitive module 10 is subject to after temperature impact, by the resistivity of semiconductor resistor, is declined, its output signal will reduce, and drives the ability of subsequent conditioning circuit work to weaken.For this reason, the present embodiment adopts and does Temperature Treatment at the input of pressure sensitive module 10, makes semiconductor resistor when work, is not subject to the impact of temperature.
As shown in Figure 2, described pressure sensitive module 10 also comprises constant current unit 103, and described constant current unit 103 connects semiconductor resistor module 102, for the output current of stabilization of semiconductor resistance module 102.In the present embodiment, described constant current unit 103 comprises the 3rd diode D3 and triode Q1, and the 3rd diode D3 is NPN triode.The positive pole of described the 3rd diode D3 connects the base stage of described feeder ear J1 and triode Q1, the minus earth of the 3rd diode D3; The collector electrode of described triode Q1 connects one end of the negative pole of the second diode D2, one end of the first semiconductor resistor R1 and the 3rd semiconductor resistor R3, the grounded emitter of triode Q1.Wherein, be provided with the first current-limiting resistance R01 between the positive pole of described the 3rd diode D3 and feeder ear J1, the resistance of this first current-limiting resistance R01 is 1K Ω, is used for preventing that triode Q1 overcurrent from damaging.
Because conventional diode is when 1 degree Celsius of the every rising of temperature, the pressure drop at its two ends will reduce 2mV, in the present embodiment, described the 3rd diode D3 adopts temperature sense diode, utilize the 3rd diode D3 to carry out the variation of temperature sensor, pressure sensitive module 10 is done to the processing of variations in temperature, made the sensitivity of semiconductor resistor module 102 not be subject to the impact of temperature.
Wherein, the operating current of the 3rd diode D3 is: ID3=(VL9-VD3)/R0=(VL9-0.7V)/R0, because the conducting voltage of the 3rd diode D3 is that the electric current that produces on the first current-limiting resistance R01 of 0.7V is very little, ignores.The operating current of the 3rd diode D3 is ID3=(VL9-VD3)/R0=(VL9-0.7V)/R0=VL9/R0=2.85V/1K=2.85mA.The base current IB that inputs triode Q1 is constant, according to IC=
iB, the collector current IC of triode Q1 is also constant.The electric current that is input to semiconductor resistor module 102 is also constant.So no matter temperature is raise or reduce, the operating current of the 3rd diode D3 can not change, pressure sensitive module 10 can not be subject to the impact of the temperature of spontaneous generation and the temperature of peripheral devices radiation when work.
Preferably, semiconductor resistor module 102 also comprises the first compensating resistance R5 and the second compensating resistance R6, for compensation semiconductor's resistance module 102, is stressed and pushes unsettled situation.Described the first compensating resistance R5 is connected between the first semiconductor resistor R1 and the second semiconductor resistor R2, and described the second compensating resistance R6 is connected between the 3rd semiconductor resistor R3 and the 4th semiconductor resistor R4.When the resistivity of semiconductor resistor module 102 is too low, the too low problem of the first compensating resistance R5 compensating resistance rate; When the resistivity of semiconductor resistor module 102 is too high, the too high problem of the second compensating resistance R6 compensating resistance rate.
Further, described semiconductor resistor module 102 also comprises the first filter capacitor C1 and the second filter capacitor C2, this the first filter capacitor C1 and the second filter capacitor C2 are for the filtering high-frequency signal of semiconductor resistor module 102 outputs, and a minute two-way inputs in amplification module 20.
Please continue to refer to Fig. 1 and Fig. 2, described amplification module 20 comprises the first operational amplifier Q2, the second operational amplifier Q3, the 3rd operational amplifier Q4, the first resistance R 11, the second resistance R 12, the 3rd resistance R 13, the 4th resistance R 14, the 5th resistance R 15 and the 6th resistance R 16; The first operational amplifier Q2, the second operational amplifier Q3 and the 3rd operational amplifier Q4 are differential operational amplifier, differential operational amplifier has the advantages that quiescent point is stable, can suppress due to the variation of influence of temperature change to pressure sensitive module 10 output signals the output signal of energy steady pressure induction module 10.And differential operational amplifier can amplify the output signal of pressure sensitive module 10, because this output signal is more weak, need to, when amplifying, can stably control and transmit.
In the present embodiment, the positive input terminal of described the first operational amplifier Q2 connects one end of the other end and the second semiconductor resistor R2 of the first semiconductor resistor R1, the negative input end of described the first operational amplifier Q2 is connected the negative input end of the second operational amplifier Q3, is also passed through the output that the 3rd resistance R 13 connects the first operational amplifier Q2 by the first resistance R 11 successively with the second resistance R 12, the output of the first operational amplifier Q2 connects the positive input terminal of the 3rd operational amplifier Q4.
Wherein, the resistance of described the first resistance R 11 is 10K Ω, the resistance of described the 3rd resistance R 13 is 100K Ω, and the 3rd resistance R 13 is the first operational amplifier Q2 negative feedback resistor, the multiplication factor of the first operational amplifier Q2 output difference sub-signal is: R13/R11=100/10=10, the positive input terminal of the differential signal amplifying through the first operational amplifier Q2 input the 3rd operational amplifier Q4.
Correspondingly, the positive input terminal of the second operational amplifier Q3 connects the other end of the 3rd semiconductor resistor R3 and one end of the 4th semiconductor resistor R4, the negative input end of described the second operational amplifier Q3 connects the output of the second operational amplifier Q3 by described the 4th resistance R 14, the output of described the second operational amplifier Q3 connects the negative input end of the 3rd operational amplifier Q4 by the 5th resistance R 15, the negative input end of described the 3rd operational amplifier Q4 also connects the output of the 3rd operational amplifier Q4 by the 6th resistance R 16, the output of described the 3rd operational amplifier Q4 connects signal processing module 30.
During concrete enforcement, if increased in semiconductor resistor module 102 after the first compensating resistance R5 and the second compensating resistance R6, the positive input terminal of described the first operational amplifier Q2 connects one end of the first compensating resistance R5 and one end of the second semiconductor resistor R2; Correspondingly, the positive input terminal of the second operational amplifier Q3 connects one end of the second compensating resistance R6 and one end of the 4th semiconductor resistor R4.
Wherein, the resistance of described the second resistance R 12 is 10K Ω, the resistance of described the 4th resistance R 14 is 100K Ω, and the 4th resistance R 14 is the negative feedback resistor of the first operational amplifier Q2, the multiplication factor of the second operational amplifier Q3 output difference sub-signal is: R14/R12=100/10=10, the negative input end of the differential signal amplifying through the second operational amplifier Q3 input the 3rd operational amplifier Q4.
By the first operational amplifier Q2 amplifying signal, be input to the positive input terminal of the 3rd operational amplifier Q4, the differential signal output signal that the second operational amplifier Q3 amplifies is input to the negative input end of the 3rd operational amplifier Q4, completes the processing of the two-way output of pressure sensitive module 10.
Wherein, the 6th resistance R 6 is the negative feedback resistor of the 3rd operational amplifier Q4, and the resistance of the 5th resistance R 5 is 10K Ω, and the resistance of the 6th resistance R 6 is 100K Ω, and therefore the multiplication factor of the 3rd operational amplifier Q4 is: R16/R15=100/10=10.Therefore the first operational amplifier Q2, the second operational amplifier Q3 and the 3rd operational amplifier Q4 all have amplification to the signal of pressure sensitive module 10 outputs, and its total multiplication factor is: (R13/R11+R14/R12) * R16/R15=(100K/10K+100K/10K) * 100K/10K=(10+10) * 10=200.
Please continue to refer to Fig. 2, of the present invention, by the mobile terminal of pressure kill-call, described amplification module 20 also comprises the first filter unit 201 and the second filter unit 202.One end of described the first filter unit 201 connects the output of the first operational amplifier Q2, and the other end of the first filter unit 201 connects the positive input terminal of the 3rd operational amplifier Q4, for the signal of the first operational amplifier Q2 output is carried out to filtering processing.One end of described the second filter unit 202 connects the output of the second operational amplifier Q3, and the other end of the second filter unit 202 connects the negative input end of the 3rd operational amplifier Q4, for the signal of the second calculation amplifier output is carried out to filtering processing.
In the present embodiment, described the first filter unit 201 comprises the 7th resistance R 7, the 8th resistance R 8, the first capacitor C 3 and the second capacitor C 4, one end of described the 7th resistance R 7 connects the output of the first operational amplifier Q2, and the other end of the 7th resistance R 7 is by the positive input terminal of the 8th resistance R 8 connection the 3rd operational amplifier Q4, also by the first capacitor C 3 ground connection; Described the second capacitor C 4 is connected between the positive input terminal and output of the 3rd operational amplifier Q4, is used for the amplifying signal of the first operational amplifier Q2 output to carry out filtering processing.
Described the second filter unit 202 comprises the 3rd capacitor C 5, one end of described the 3rd capacitor C 5 connects the negative input end of the 3rd operational amplifier Q4, also by the 5th resistance R 15, connects the output of the second operational amplifier Q3, is used for the amplifying signal of the second operational amplifier Q3 output to carry out filtering processing.
Preferably, described amplification module 20 also comprises voltage-stabiliser tube D4, and the negative pole of described voltage-stabiliser tube D4 connects the positive input terminal of the 3rd operational amplifier Q4, and the plus earth of voltage-stabiliser tube D4, for the voltage of stable input the 3rd operational amplifier Q4.
Further, described amplification module 20 also comprises PTC(PositiveTemperatureCoefficient, positive temperature coefficient) thermistor RT, this PTC thermistor RT mainly plays temperature protection effect to the 3rd operational amplifier Q4.According to the characteristic of PTC thermistor, when PTC thermistor RT senses excess Temperature, its resistance will increase, and the electric current that flows through PTC thermistor RT will reduce, and makes to flow through the current reduction of the 3rd operational amplifier Q4; After temperature declines, the resistance of PTC thermistor RT reduces, and the electric current that flows through PTC thermistor RT increases, and therefore, PTC thermistor RT plays the effect of inhibition to the temperature of pressure sensitive module 10.
Please again consult Fig. 1 and Fig. 2, provided by the invention by the mobile terminal of pressure kill-call, described signal processing module 30 comprises signal processor U1 and central processing unit U2, the Input1 end of described signal processor U1 connects the output of the 3rd operational amplifier Q4, and, the Input2 of signal processor U1 end connects, the GPIO_45 of central processing unit U2 holds, the Output end of signal processor U1 connects the GPIO_44 end of central processing unit U2, and VDD1 end and the VDD of described signal processor U1 is the GND end ground connection that end is all connected described feeder ear J1, signal processor U1.Wherein, central processing unit U2 adopts the chip that model is MSM8930.
The signal of the 3rd operational amplifier Q4 input is input to the input1 end of signal processor, after the collection sampling of signal processor, the digital signal of output is in central processing unit U2, work by the GPIO mouth control signal processor of central processing unit U2, wherein, the digital signal of the GPIO_44 end output SDA signal control signal processor U1 output of central processing unit U2, SCL is for signal processor U1 provides the clock signal that is less than 100KHZ for the output of GPIO_45 end, is input to the input2 end of signal processor.
Please again consult Fig. 2, mobile terminal by pressure kill-call of the present invention also comprises and interrupts Tip element 40, and described interruption Tip element 40 connects signal processor U1, for when the dropped calls, whether output information, further finish call to user's prompting mobile terminal.
Wherein, whether described interruption Tip element 40 can finish by the form prompting user's communication of the tinkle of bells or indicator light.In the embodiment of the present invention, interrupt Tip element 40 and comprise light-emitting diode D5 and metal-oxide-semiconductor Q5, this metal-oxide-semiconductor Q5 is P channel MOS tube.The positive pole of described light-emitting diode D5 connects described feeder ear J1 by the second current-limiting resistance R02, and the negative pole of light-emitting diode D5 connects the source electrode of metal-oxide-semiconductor Q5, and the grid of described metal-oxide-semiconductor Q5 connects the Input1 end of signal processor U1, grounded drain.When mobile terminal call, the LDO voltage signal V_L9_2P85 that outside (as battery) provides starts working.At this moment, pressure sensitive module 10, at the state of work, will not finish otherwise converse, and now the 3rd operational amplifier Q4 does not have Voltage-output, and the drive end of metal-oxide-semiconductor Q5 is low level, makes metal-oxide-semiconductor Q5 conducting, and light-emitting diode D5 is lighted.
In the present embodiment, the maximum forward operating current that described light-emitting diode D5 lights is IF=20mA, and the forward voltage VF that light-emitting diode D5 lights is 2V, the resistance of the second current-limiting resistance R02=(V_L9-VF)/IF=(2.85V-2V)/20mA=42.5
.
Following smart mobile phone is example, in conjunction with Fig. 2, the working method of the mobile terminal by pressure kill-call of the present invention is elaborated:
When smart mobile phone is conversed, the LDO voltage signal V_L9_2P85 that outside provides starts working.At this moment, pressure sensitive module 10 is not at the state of work, and now the 3rd operational amplifier Q4 does not have Voltage-output, and the drive end of metal-oxide-semiconductor Q5 (being grid) is low level, makes metal-oxide-semiconductor Q5 conducting, and light-emitting diode D5 is lighted.
When needs are hung up the telephone, act on pressure sensitive module 10 places that certain pressure forms at semiconductor resistor module 102, the effect that the first diode D1 and the second diode D2 are under pressure, compression semiconductor resistor module 102 makes its unbalance output voltage, the voltage signal of semiconductor resistor module 102 outputs is through amplifying after processing, through the 3rd operational amplifier Q4 output.Central processing unit U2 holds the clock signal that 100KHz frequency left and right is provided to signal processor by GPIO_45, the output signal of the 3rd operational amplifier Q4 is input in central processing unit U2 after the processing of signal processor.By central processing unit U2 to the output signal of signal processor U1 by analysis handling interrupt converse.During by end call, the voltage that metal-oxide-semiconductor Q5 is subject to the 3rd operational amplifier Q4 output drives, and from conducting, becomes cut-off, and light-emitting diode D5 is gone out from bright becoming, and indication is conversed and finished.At this moment, the screen of smart mobile phone can be not bright, directly by light-emitting diode D5, indicates end of conversation, so the power consumption of relative Touch Screen kill-call this part, can greatly reduce the power consumption of this part.
In sum, the present invention carrys out dropped calls according to pressure, without user's touch-control touch-screen, has avoided touching screen reaction insensitive, and the problem that cannot hang up the telephone, has promoted user's experience, but also has avoided the power consumption of touch screen moment, has extended the cruising time of battery.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. by a mobile terminal for pressure kill-call, it is characterized in that, comprising:
Pressure sensitive module, for induction pressure, and produces voltage signal according to pressure;
Amplification module, for amplifying the voltage signal of exporting with steady pressure induction module;
Signal processing module, for the voltage signal of amplification module output is carried out to analyzing and processing, and judges whether dropped calls according to analysis result;
Described pressure sensitive module, amplification module are connected successively with signal processing module.
2. the mobile terminal of pressure kill-call that passes through according to claim 1, is characterized in that, described pressure sensitive module comprises:
Unbalance sensing unit, for induction pressure;
Semiconductor resistor module, for producing voltage signal when unbalance sensing unit senses pressure;
Described unbalance sensing unit, semiconductor resistor module are connected successively with amplification module.
3. according to claim 2 by the mobile terminal of pressure kill-call, it is characterized in that, described pressure sensitive module also comprises: for the constant current unit of the output current of stabilization of semiconductor resistance module; Described constant current unit connects semiconductor resistor module.
4. according to claim 2 by the mobile terminal of pressure kill-call, it is characterized in that, described unbalance sensing unit comprises the first diode and the second diode, and the negative pole that the positive pole connection feeder ear of described the first diode, the negative pole of the first diode connect the positive pole of the second diode, the second diode connects semiconductor resistor module.
5. the mobile terminal of pressure kill-call that passes through according to claim 4, is characterized in that, described semiconductor resistor module comprises the first semiconductor resistor, the second semiconductor resistor, the 3rd semiconductor resistor and the 4th semiconductor resistor; One end of described the first semiconductor resistor connects the negative pole of the second diode, and the other end of the first semiconductor resistor connects amplification module by the second semiconductor resistor; One end of described the 3rd semiconductor resistor connects the negative pole of the second diode, and the other end of the 3rd semiconductor resistor connects amplification module by the 4th semiconductor resistor.
6. according to claim 5 by the mobile terminal of pressure kill-call, it is characterized in that, described constant current unit comprises the 3rd diode and triode, and the positive pole of described the 3rd diode connects the base stage of described feeder ear and triode, the minus earth of the 3rd diode; The collector electrode of described triode connects one end of the negative pole of the second diode, one end of the first semiconductor resistor and the 3rd semiconductor resistor, the grounded emitter of triode.
7. according to claim 5 by the mobile terminal of pressure kill-call, it is characterized in that, described amplification module comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
The positive input terminal of described the first operational amplifier connects one end of the other end and second semiconductor resistor of the first semiconductor resistor, the negative input end of described the first operational amplifier is connected successively the negative input end of the second operational amplifier, also by the 3rd resistance, connects the output of the first operational amplifier with the second resistance by the first resistance, the output of the first operational amplifier connects the positive input terminal of the 3rd operational amplifier; The positive input terminal of the second operational amplifier connects the other end of the 3rd semiconductor resistor and one end of the 4th semiconductor resistor, the negative input end of described the second operational amplifier connects the output of the second operational amplifier by described the 4th resistance, the output of described the second operational amplifier connects the negative input end of the 3rd operational amplifier by the 5th resistance, the negative input end of described the 3rd operational amplifier also connects the output of the 3rd operational amplifier by the 6th resistance, the output of the 3rd operational amplifier connects signal processing module.
8. the mobile terminal of pressure kill-call that passes through according to claim 7, is characterized in that, described amplification module also comprises:
The first filter unit, for carrying out filtering processing to the signal of the first operational amplifier output;
The second filter unit, for carrying out filtering processing to the signal of the second calculation amplifier output;
One end of described the first filter unit connects the output of the first operational amplifier, and the other end of the first filter unit connects the positive input terminal of the 3rd operational amplifier; One end of described the second filter unit connects the output of the second operational amplifier, and the other end of the second filter unit connects the negative input end of the 3rd operational amplifier.
9. the mobile terminal of pressure kill-call that passes through according to claim 7, is characterized in that, described signal processing module comprises:
Signal processor, for the voltage signal of amplification module output is carried out to analyzing and processing, and judges whether dropped calls according to analysis result;
Central processing unit, for the work of control signal processor;
The Input1 end of described signal processor connects the 3rd output of operational amplifier, the Input2 of signal processor end connects the GPIO_45 end of central processing unit, the Output end of signal processor connects the GPIO_44 end of central processing unit.
10. according to claim 9 by the mobile terminal of pressure kill-call, it is characterized in that, also comprise interruption Tip element, for when the dropped calls, output information; Described interruption Tip element connects the Input1 end of signal processor.
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| CN201310650195.XA CN103634431A (en) | 2013-12-06 | 2013-12-06 | Mobile terminal with pressure ring-off function |
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| CN105183327A (en) * | 2015-07-30 | 2015-12-23 | 努比亚技术有限公司 | Terminal and terminal operation method |
| CN105357364A (en) * | 2015-09-25 | 2016-02-24 | 努比亚技术有限公司 | Method and device for answering or hanging up calls by mobile terminal, and mobile terminal |
| CN105577918A (en) * | 2015-12-08 | 2016-05-11 | 广东欧珀移动通信有限公司 | Method and system for realizing three-party conversation switching by utilizing pressure screen, and mobile terminal |
| CN105892852A (en) * | 2016-03-29 | 2016-08-24 | 联想(北京)有限公司 | Rapid achieving method for terminal functions and electronic equipment |
| CN107231466A (en) * | 2016-03-24 | 2017-10-03 | 西安中兴新软件有限责任公司 | A kind of terminal called method and device |
| CN107277231A (en) * | 2017-05-31 | 2017-10-20 | 维沃移动通信有限公司 | A kind of incoming call processing method and mobile terminal |
| CN107682116A (en) * | 2017-09-04 | 2018-02-09 | 温美群 | A kind of medical network big data processing system |
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| CN105183327A (en) * | 2015-07-30 | 2015-12-23 | 努比亚技术有限公司 | Terminal and terminal operation method |
| CN105183327B (en) * | 2015-07-30 | 2019-10-08 | 努比亚技术有限公司 | A kind of method of terminal and terminal operation |
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| CN107277231B (en) * | 2017-05-31 | 2019-11-15 | 维沃移动通信有限公司 | A kind of incoming call processing method and mobile terminal |
| CN107682116A (en) * | 2017-09-04 | 2018-02-09 | 温美群 | A kind of medical network big data processing system |
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Application publication date: 20140312 |