CN109412572A - Low-power consumption touch sensible wakes up system and method - Google Patents
Low-power consumption touch sensible wakes up system and method Download PDFInfo
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- CN109412572A CN109412572A CN201710707616.6A CN201710707616A CN109412572A CN 109412572 A CN109412572 A CN 109412572A CN 201710707616 A CN201710707616 A CN 201710707616A CN 109412572 A CN109412572 A CN 109412572A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4418—Suspend and resume; Hibernate and awake
Abstract
The invention belongs to touch-control awakening technology fields, provide a kind of low-power consumption touch sensible wake-up system and method, outputs level signals when detecting touch sensible signal by oscillation module offer reference clock signal and touch sensible module, when detecting that the frequency of level signal within a preset time reaches preset value so as to main control module, then wake-up load is triggered.It is thus achieved that touch sensible wakes up the effect of load, which is simple and convenient, greatly reduces power consumption, therefore when solving existing equipment awakening technology there is reawaking because of load, all it is usually to use artificial control button to issue driving signal, it is big there is a problem that power consumption is lost.
Description
Technical field
The invention belongs to touch-control awakening technology fields, wake up system and side more particularly to a kind of low-power consumption touch sensible
Method.
Background technique
Nowadays, the energy-saving and emission-reduction policy proposed in response to country, more and more household electrical appliance, mobile client etc. are negative
Load is all standby/dormant state to be then in when being not used by, and be just re-set as out when user needs using load
Machine/wake-up states can be effectively saved electric energy in this way, however, usually all adopting when load is turned back on/waken up
With artificial control button to issue driving signal, it is big to there is a problem that power consumption is lost.
Therefore, when existing equipment awakening technology because of load there is reawaking, be usually all using artificial control by
It is big to have that power consumption is lost to issue driving signal for key.
Summary of the invention
The purpose of the present invention is to provide a kind of low-power consumption touch sensibles to wake up system and method, it is intended to solve existing set
When standby awakening technology because of load there is reawaking, usually all it is to use artificial control button to issue driving signal, exists
Power consumption big problem is lost.
One aspect of the present invention provides a kind of low-power consumption touch sensible wake-up system, and the low-power consumption touch sensible wakes up system
System includes:
For providing the oscillation module of reference clock signal；
The touch sensible module of outputs level signals when for detecting touch sensible signal；
It is connected with the output end of the output end of the oscillation module and the touch sensible module, it is described for detecting
When the frequency of level signal within a preset time reaches preset value, then the main control module for waking up load is triggered.
Another aspect of the present invention provides a kind of low-power consumption touch sensible awakening method, and the low-power consumption touch sensible wakes up
Method the following steps are included:
A., one reference clock signal is provided；
B. when detecting touch sensible signal, then a level signal is generated；
When C. detecting the frequency of the level signal within a preset time and reaching preset value, then wake-up load is triggered.
In conclusion the present invention provides a kind of low-power consumption touch sensibles to wake up system and method, mentioned by oscillation module
Outputs level signals when detecting touch sensible signal for reference clock signal and touch sensible module, so as to main control module inspection
When measuring the frequency of level signal within a preset time and reaching preset value, then wake-up load is triggered.It is thus achieved that touch sensible
The effect of load is waken up, which is simple and convenient, greatly reduces power consumption, therefore solve existing equipment awakening technology and exist
When being reawaked because of load, be usually all to use artificial control button to issue driving signal, it is big there is power consumption loss
Problem.
Detailed description of the invention
Fig. 1 is the modular structure schematic diagram that a kind of low-power consumption touch sensible provided by the invention wakes up system.
Fig. 2 is the exemplary circuit figure that a kind of low-power consumption touch sensible provided by the invention wakes up system.
Fig. 3 is the signal that a kind of low-power consumption touch sensible provided by the invention wakes up each node of the system before and after being touched
Waveform diagram.
Fig. 4 is a kind of step flow diagram of low-power consumption touch sensible awakening method provided by the invention.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
A kind of low-power consumption touch sensible of the embodiment of the present invention wakes up system and method, including touch sensible module, oscillation
Module and main control module provide reference clock signal to main control module by oscillation module and touch sensible module detect
Outputs level signals are to main control module when to touch sensible signal, so that main control module detects level signal within a preset time
Frequency when reaching preset value, then trigger wake-up load.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Fig. 1 shows the modular structure that a kind of low-power consumption touch sensible provided by the invention wakes up system, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown, and details are as follows:
A kind of above-mentioned low-power consumption touch sensible wakes up system 10, including touch sensible module 101, oscillation module 103 and
Main control module 102.
The input terminal of the output termination main control module 102 of touch sensible module 101, the output of oscillation module 103 terminate master
Control the receiving end of module 102, the output terminating load 201 of main control module 102.
Oscillation module 103 is for providing reference clock signal；Touch sensible module 101 is for detecting touch sensible signal
When outputs level signals；When main control module 102 reaches preset value for detecting the frequency of level signal within a preset time, then touch
Hair wakes up load 201.
As an embodiment of the present invention, it (is that inductor is touched that touch sensible module 101, which detects when touch sensible signal,
When touching induction), then the level signal of output is calibrated to be transferred to main control module 102, once the frequency of level signal reaches default
When value, main control module 102 then wakes up load 201.
Fig. 2 shows a kind of exemplary circuits of low-power consumption touch sensible wake-up system provided by the invention, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown, and details are as follows:
As an embodiment of the present invention, above-mentioned touch sensible module 101 includes the first current source Ibp, the second current source
Ibn, first switch SW1, second switch SW2, parasitic capacitance Cp, inductance capacitance Cf, Schmidt trigger Hsy, signal follower
Buf, the first phase inverter inv1 and the second phase inverter inv2；
The first end of the output termination first switch SW1 of first current source Ibp, the output termination the of the second current source Ibn
The first end of two switch SW2；The second end of first switch SW1, the second end of second switch SW2, the first end of parasitic capacitance Cp,
The first end of inductance capacitance Cf and the input terminal of Schmidt trigger Hsy connect altogether；The second end and induced electricity of parasitic capacitance Cp
Hold the second end ground connection of Cf, the input terminal of the output termination signal follower buf of Schmidt trigger Hsy, signal follower buf
Output termination the first phase inverter inv1 input terminal, the first phase inverter inv1 output termination the second phase inverter inv2 input
End, the output end of the second phase inverter inv2 are the output end of touch sensible module 101.In this embodiment, above-mentioned schmidt trigger
Device Hsy can be made of 555 timers, and certainly, the model of Schmidt trigger is not construed as limiting, and be applied as long as can reach with the present embodiment
Function described in schmitt trigger Hsy also may be used.The pwm control signal of first switch SW1 and the PWM of second switch SW2 are controlled
Signal sequence processed on the contrary, first switch SW1 and second switch SW2 are specially mechanical switch, it is of course also possible to for field-effect tube or
Person's triode etc. has the device of switching function.
Wherein, the power supply signal of the first current source Ibp and second current source Ibn output passes through first switch SW1 and the
Two switch SW2, which are controlled, to be formed triangular signal and is output to Schmidt trigger Hsy, it is of course also possible to be square-wave signal or
Sine wave signal.First current source Ibp, the second current source Ibn, parasitic capacitance Cp, inductance capacitance Cf, Schmidt trigger
Hsyi, the first phase inverter inv1, the second phase inverter inv2, signal follower buf and feedback control signal sp and sn form one
Oscillatory feedback circuit forms oscillation.And the introducing of signal follower buf, the first phase inverter inv1 and the second phase inverter inv2
Delay can be ignored in the feedback loop, and main delay is by Schmidt trigger Hsy hysteresis range, parasitic capacitance Cp and induction
The electric current of the size of capacitor Cf, the first current source Ibp and the second current source Ibn determines.
As an embodiment of the present invention, above-mentioned oscillation module 103 includes OSC ring oscillator (Fig. 2 is indicated using OSC),
The output end of OSC ring oscillator is the output end of oscillation module 103.OSC ring oscillator can be made of odd number phase inverter,
In the present embodiment, above-mentioned OSC ring oscillator, including third phase inverter inv3, the 4th reverse phase are formed using three phase inverters
Device inv4 and the 5th phase inverter inv5, the input terminal of third phase inverter inv3 and the output end of the 5th phase inverter inv5 connect simultaneously altogether
As the output end of OSC ring oscillator, the input terminal of the 4th phase inverter inv4 of output termination of third phase inverter inv3, the 4th
The input terminal of the 5th phase inverter inv5 of output termination of phase inverter inv4.
As an embodiment of the present invention, above-mentioned main control module 102 includes detection data counter 1021, reference counter
1023, shift register group 1022 and touch determining device 1024；
The input terminal of detection data counter 1021 is the input terminal of main control module 102, detection data counter 1021
The input terminal of output termination shift register group 1022, the output end in contact of shift register group 1022 touch the defeated of determining device 1024
Enter end, the output end for touching determining device 1024 is the output end of main control module 102, and the receiving end of reference counter 1023 is master control
The receiving end of module 102, reference counter 1023 respectively with detection data counter 1021, shift register group 1022 and touching
Determining device 1024 is touched to be connected.
As an embodiment of the present invention, above-mentioned shift register group 1022 includes that (Fig. 2 is used five data storages
Rreg1~Rreg5 indicate), each data storage have 16 registers, 16 registers respectively with the detection data meter
16 bytes of number device output data are corresponding one by one.
As an embodiment of the present invention, said reference counter 1023 is 10bits bit length counter, by touch determining device
1024, which issue S0 instruction, starts to work, and is once to count the period with 1024 reference clock cycles, and the meter Qing Dynasty 0 counts again, and
To detection data counter 1021, shift register group 1022, touch the transmission signal of determining device 1024:
A:Clear is sent to detection data counter 1021, and notifications count is time-up, and enumeration data is transferred to output
Register, and will test 1021 count value of data counter clear 0.
B:R is sent to shift register group 1022, and notice register group reads detection data counter 1021 and exports new number
According to, be put into the first register Rreg1, and will before in each register group data successively move back, cover original data.
C:ST, which is sent to, touches determining device 1024, and notice touches determining device 1024 and reads in register group according to configuration mode
Corresponding data, and judge whether to trigger according to setting Sensitirity va1ue.
The bit length of above-mentioned detection data counter 1021 is 16bits, and 1023 synchronous counting of reference counter, in benchmark
In the counting period of counter 1023, induction conversion output numerical value is counted, and under Clear signal designation, first by count value
It is put into output buffer, then will test data counter clear 0.
Above-mentioned shift register group 1022 shares Rreg1~Rreg5 totally 5 data storage device compositions, each data storage
There are 16 registers, the 16bits data of corresponding detection data counter output inside device.The data input and output of register group
It is controlled respectively by signal R, Rsel<1:0>, new reception data are read in R control and data are displacement；Rsel<1:0>control output number
According to data in Rreg2~Rreg5 are put into output bus Data1<15:0>by selection；And Data0<15:0>default output is newest
Count value exports new data in Rreg1.
Above-mentioned touch determining device 1024 completes touch detection judgement according to configuration mode, and makes corresponding control.EN is
Touch determining device enable signal；Asel<1:0>is register group output data selection signal, and selection will count in Rreg2~Rreg5
Determining device is touched according to input；Bsel<1:0>touch sensitivity selection signal, respectively by 00,01,10,11 corresponding 4 from low to high
A grade；ST is to compare notification signal；S0 reference counter enabling signal.Data1<15:0>and Data0<15:0>is for sentencing
Two groups of disconnected correlation data input lines；CLK system clock；Awake, which is touched, wakes up notification signal, exports 1 after wake-up；PD output control
Signal processed can be used for power down control of other modules etc..
Fig. 3 shows a kind of low-power consumption touch sensible provided by the invention and wakes up each node of the system before and after being touched
Signal waveform, below in conjunction with above-mentioned Fig. 2 and Fig. 3, to a kind of above-mentioned working principle progress of low-power consumption touch sensible wake-up system
Illustrate:
Touch sensible module is due to increasing current source after detecting touch sensible signal (and inductor is by touch sensible)
And inductance capacitance, the frequencies go lower for the waveform signal for causing it to export；Statistic is reduced in the corresponding benchmark survey period；?
Under the premise of external environment is constant (temperature, voltage are constant), touches front and back OSC frequency and remain unchanged；And the inspection of processing comparison in real time
The statistical value obtained is surveyed, by comparing one group of data of selected relative time section, by judging that the variation ratio of selected data is closed
Whether system reaches setting value, to trigger wake-up system.The low-power consumption touch sensible wake up system can adaptive environment it is (temperature, wet
Degree, voltage etc.), it is structure simple and flexible, low in energy consumption.
Fig. 4 shows a kind of step process of low-power consumption touch sensible awakening method provided by the invention, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown, and details are as follows:
A kind of low-power consumption touch sensible awakening method, comprising the following steps:
S101., one reference clock signal is provided；
S102. when detecting touch sensible signal, then a level signal is generated；
S103. when the frequency of detection level signal within a preset time reaches preset value, then wake-up load is triggered.
It is specifically when providing benchmark using OSC ring oscillator as another embodiment of the present invention, in above-mentioned steps S101
Clock signal.
It is specifically to utilize the first current source Ibp, the second current source in above-mentioned steps S102 as another embodiment of the present invention
Ibn, first switch SW1, second switch SW2, parasitic capacitance Cp, inductance capacitance Cf, Schmidt trigger Hsy, signal follower
Buf, the first phase inverter inv1 and the second phase inverter inv2 generate level signal when detecting touch sensible signal；
Wherein, the first end of the output termination first switch SW1 of the first current source Ibp, the output end of the second current source Ibn
Connect the first end of second switch SW2；The second end of first switch SW1, the second end of second switch SW2, parasitic capacitance Cp
The input terminal of one end, the first end of inductance capacitance Cf and Schmidt trigger Hsy connects altogether；The second end and sense of parasitic capacitance Cp
The second end of capacitor Cf is answered to be grounded, the input terminal of the output termination signal follower buf of Schmidt trigger Hsy, signal follows
The input terminal of the first phase inverter inv1 of output termination of device buf, the output of the first phase inverter inv1 terminate the second phase inverter inv2
Input terminal, the output end of the second phase inverter inv2 is to export the level signal.
It is specifically to utilize detection data counter, reference count in above-mentioned steps S103 as another embodiment of the present invention
Device, shift register group and when touching determining device and detecting the frequency of the level signal within a preset time and reach preset value,
Then trigger wake-up load；
Wherein, frequency of the input terminal of detection data counter to detect level signal, detection data counter it is defeated
The input terminal of shift register group is terminated out, and the output end in contact of shift register group touches the input terminal of determining device, touches judgement
The output end of device wakes up load for triggering, and the receiving end of reference counter is to receive reference clock signal, reference counter
It is connected respectively with detection data counter, shift register group and touch determining device.
As another embodiment of the present invention, above-mentioned shift register group includes multiple data storages, each data storage
Device has multiple registers, and the quantity of register is consistent with the byte number of detection data counter output data.
In conclusion the embodiment of the invention provides a kind of low-power consumption touch sensibles to wake up system and method, pass through oscillation
Outputs level signals when module offer reference clock signal and touch sensible module detect touch sensible signal, so as to master control
When module detects that the frequency of level signal within a preset time reaches preset value, then wake-up load is triggered.It is thus achieved that touching
The effect that induction wakes up load is touched, which is simple and convenient, greatly reduces power consumption, therefore solve existing equipment and wake up skill
It is usually all to use artificial control button to issue driving signal when art because of load there is reawaking, there is power consumption damages
Consume big problem.The embodiment of the present invention is realized simply, is not needed to increase additional hardware, be can effectively reduce cost, is had relatively strong
Usability and practicality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of low-power consumption touch sensible wakes up system, which is characterized in that the low-power consumption touch sensible wakes up system and includes:
For providing the oscillation module of reference clock signal；
The touch sensible module of outputs level signals when for detecting touch sensible signal；
It is connected with the output end of the output end of the oscillation module and the touch sensible module, for detecting the level
When the frequency of signal within a preset time reaches preset value, then the main control module for waking up load is triggered.
2. low-power consumption touch sensible as described in claim 1 wakes up system, which is characterized in that the touch sensible module packet
It includes:
First current source, the second current source, first switch, second switch, parasitic capacitance, inductance capacitance, Schmidt trigger, letter
Number follower, the first phase inverter and the second phase inverter；
The output of first current source terminates the first end of the first switch, described in the output termination of second current source
The first end of second switch；The second end of the first switch, the second end of the second switch, the parasitic capacitance first
The input terminal at end, the first end of the inductance capacitance and the Schmidt trigger connects altogether；The second end of the parasitic capacitance
It being grounded with the second end of the inductance capacitance, the output of the Schmidt trigger terminates the input terminal of the signal follower,
The output of the signal follower terminates the input terminal of first phase inverter, the output termination of first phase inverter described the
The input terminal of two phase inverters, the output end of second phase inverter are the output end of the touch sensible module.
3. low-power consumption touch sensible as described in claim 1 wakes up system, which is characterized in that the oscillation module includes annular
Oscillator,
The output end of the ring oscillator is the output end of the oscillation module.
4. low-power consumption touch sensible as described in claim 1 wakes up system, which is characterized in that the main control module includes:
Detection data counter, reference counter, shift register group and touch determining device；
The input terminal of the detection data counter is the input terminal of the main control module, the output of the detection data counter
Terminate the input terminal of the shift register group, the output termination input for touching determining device of the shift register group
End, the output end for touching determining device are the output end of the main control module, and the receiving end of the reference counter is described
The receiving end of main control module, the reference counter respectively with the detection data counter, the shift register group and
The touch determining device is connected.
5. low-power consumption touch sensible as claimed in claim 4 wakes up system, which is characterized in that the shift register group includes
Multiple data storages, each data storage have multiple registers, the quantity of the register and the testing number
It is consistent according to the byte number of counter output data.
6. a kind of low-power consumption touch sensible awakening method, which is characterized in that the low-power consumption touch sensible awakening method include with
Lower step:
A., one reference clock signal is provided
B. when detecting touch sensible signal, then a level signal is generated；
When C. detecting the frequency of the level signal within a preset time and reaching preset value, then wake-up load is triggered.
7. low-power consumption touch sensible awakening method as claimed in claim 6, which is characterized in that be specifically benefit in the step A
The reference clock signal is provided with ring oscillator.
8. low-power consumption touch sensible awakening method as claimed in claim 6, which is characterized in that be specifically benefit in the step B
With the first current source, the second current source, first switch, second switch, parasitic capacitance, inductance capacitance, Schmidt trigger, signal
Follower, the first phase inverter and the second phase inverter generate the level signal when detecting touch sensible signal；
Wherein, the output of first current source terminates the first end of the first switch, the output end of second current source
Connect the first end of the second switch；The second end of the first switch, the second end of the second switch, the parasitic capacitance
First end, the first end of the inductance capacitance and the Schmidt trigger input terminal connect altogether；The parasitic capacitance
Second end and the second end of the inductance capacitance are grounded, and the output of the Schmidt trigger terminates the defeated of the signal follower
Enter end, the output of the signal follower terminates the input terminal of first phase inverter, the output termination of first phase inverter
The input terminal of second phase inverter, the output end of second phase inverter is to export the level signal.
9. low-power consumption touch sensible awakening method as claimed in claim 6, which is characterized in that be specifically benefit in the step C
With detection data counter, reference counter, shift register group and the determining device detection level signal is touched default
When frequency in time reaches preset value, then triggers and wake up the load；
Wherein, frequency of the input terminal of the detection data counter to detect the level signal, the detection data meter
The output of number device terminates the input terminal of the shift register group, and the output of the shift register group terminates the touch judgement
The input terminal of device, the output end for touching determining device wake up the load, the receiving end of the reference counter for triggering
To receive the reference clock signal, the reference counter respectively with the detection data counter, the shift LD
Device group and the touch determining device are connected.
10. low-power consumption touch sensible awakening method as claimed in claim 9, which is characterized in that the shift register group packet
Multiple data storages are included, each data storage has multiple registers, the quantity of the register and the detection
The byte number of data counter output data is consistent.
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| CN106059538A (en) * | 2016-05-19 | 2016-10-26 | 深圳大学 | Relaxation oscillator with process deviation calibration function |
| CN106547415A (en) * | 2016-10-24 | 2017-03-29 | 深圳市汇春科技股份有限公司 | A kind of Embedded capacitance touch sensing device and its implementation |
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