CN109038482A - A kind of electrostatic protection apparatus and method - Google Patents
A kind of electrostatic protection apparatus and method Download PDFInfo
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- CN109038482A CN109038482A CN201810983594.0A CN201810983594A CN109038482A CN 109038482 A CN109038482 A CN 109038482A CN 201810983594 A CN201810983594 A CN 201810983594A CN 109038482 A CN109038482 A CN 109038482A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
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- Elimination Of Static Electricity (AREA)
Abstract
This application involves field of terminal technology more particularly to a kind of electrostatic protection apparatus and methods, to alleviate the problem of field-effect tube forms irreversible damage by electrostatic breakdown in the prior art.The device includes: electrostatic detection module, and trigger signal is generated when detecting that electrostatic potential meets protection condition and trigger signal is sent to control module；Control module generates power-off signal according to trigger signal and power-off signal is sent to power management module；Power management module pair electricity consumption module corresponding with the power-off signal stops power supply.The application, which cuts off the power, turns off the field-effect tube in electronic equipment, makes to be not turned between source electrode and drain electrode, electrostatic is avoided to pass through source electrode and drain electrode.Thus it avoids causing latch-up when source electrode and drain electrode of the high-pressure electrostatic by field-effect tube, and then avoids the high-temperature damage field-effect tube as caused by latch-up, improve electronic equipment to the protective capacities of electrostatic, reduce damage of the electrostatic to electronic equipment.
Description
Technical field
This application involves field of terminal technology more particularly to a kind of electrostatic protection apparatus and methods.
Background technique
Static discharge (Electro-Static discharge, ESD) is a natural phenomena very common in life, no
A certain amount of charge is often accumulated on surface when jljl material contacts with each other, and when encountering other objects, there may be up to ten
Several kilovolts of static discharge voltage.Human body often stored charge in work, life, especially under dry environment, once
Electronic equipment is touched when accumulating a large amount of charges, electronic equipment release electrostatic, this electrostatic will would generally be set electronics
It is standby to cause centainly to damage.
Specifically, the electrostatic of release to electronic equipment can be considered as one or more pulse electrical signals, this pulse telecommunications
Number peak value it is higher, tend to conduct the field-effect tube to driving chip by the route of electronic equipment, lead to field-effect tube
Latch-up occurs, and then due to the structure of high temperature field-effect tube, damages driving chip, and then influences electronic equipment
Performance.
Summary of the invention
The embodiment of the present application provides a kind of electrostatic protection apparatus and method, quiet to alleviate field-effect tube in the prior art
Electrical breakdown forms the problem of irreversible damage.
The embodiment of the present application adopts the following technical solutions:
In a first aspect, a kind of electrostatic protection apparatus, comprising: the electrostatic detection mould being electrically connected at least one electricity consumption module
Block；The power management module being electrically connected at least one electricity consumption module；With the electrostatic detection module and the power management
The control module that module is electrically connected；
The electrostatic detection module, trigger signal is generated when detecting that electrostatic potential meets protection condition；And it will be described
Trigger signal is sent to the control module；
Control module generates power-off signal according to the trigger signal；And the power-off signal is sent to power management
Module；
Power management module stops powering to electricity consumption module corresponding with the power-off signal.
Second aspect provides a kind of electrostatic protection method characterized by comprising
Trigger signal is generated when detecting that electrostatic potential meets protection condition；
Power-off signal is generated according to the trigger signal；
Electricity consumption module corresponding with the power-off signal is stopped powering.
The third aspect provides a kind of terminal device, which includes processor, memory and be stored in described deposit
On reservoir and the computer program that can run on the processor, the computer program are realized when being executed by the processor
The step of method as described in second aspect.
Fourth aspect provides a kind of computer readable storage medium, which is characterized in that the computer-readable storage medium
Computer program is stored in matter, and the step of the method as described in second aspect is realized when the computer program is executed by processor
Suddenly.
The embodiment of the present application use at least one above-mentioned technical solution can reach it is following the utility model has the advantages that
In scheme provided by the present application, when electrostatic potential meets protection condition, trigger signal is generated according to electrostatic signal,
And then power-off signal is generated, it is cut off the power according to power-off signal.Thus turn off the field-effect tube in electronic equipment, i.e. field-effect
It is not turned between source electrode and drain electrode in pipe.It is conductive without being formed between source electrode and drain electrode in the case that scene effect pipe is not turned on
Channel, therefore do not have electric current and pass through source electrode and drain electrode.This programme avoids source electrode and drain electrode of the high-pressure electrostatic by field-effect tube
Shi Zaocheng latch-up, and then the high-temperature damage field-effect tube as caused by latch-up is avoided, electronic equipment is thus improved to quiet
The protective capacities of electricity reduces damage of the electrostatic to electronic equipment.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is a kind of one of electrostatic protection apparatus structural schematic diagram provided by the present application；
Fig. 2 is a kind of electrostatic protection apparatus second structural representation provided by the present application；
Fig. 3 is a kind of electrostatic protection apparatus third structural representation provided by the present application；
Fig. 4 is a kind of one of electrostatic protection method flow diagram provided by the present application；
Fig. 5 is the two of a kind of electrostatic protection method flow diagram provided by the present application；
Fig. 6 is the three of a kind of electrostatic protection method flow diagram provided by the present application；
A kind of hardware structural diagram of Fig. 7 mobile terminal of each embodiment to realize the present invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Electrostatic protection apparatus provided by the present application can be widely applied to various electronic equipments, such as mobile phone, tablet computer, intelligence
Wrist-watch, computer, server etc..It often include field effect transistor, field effect transistor in these electronic equipments
(Field Effect Transistor, FET) abbreviation field-effect tube, alternatively referred to as unipolar transistor, is joined by majority carrier
With conduction.Junction field effect transistor (Junction FET, JFET) and metal oxide semiconductcor field effect can be specifically divided into
(metal-oxide semiconductor FET, MOS-FET) should be managed.Field-effect tube belongs to voltage controlled semiconductor device,
Comprising grid, source electrode and drain electrode, usually the control whether source-drain electrode is connected can be realized by controlling the voltage of grid, specifically
, when the voltage difference between grid and source electrode meets preset condition, field-effect tube is opened, and is formed between source electrode and drain electrode conductive
Channel, electric current can flow to drain electrode from source electrode by conducting channel.In the case that scene effect pipe is opened, once there is electrostatic from source
Pole flows into field-effect tube, and excessively high peak value can to puncture between the source electrode and drain electrode of field-effect tube, when breakdown often
Permanent damage will not be caused to field-effect tube, hit although part punch-through effect is theoretically reversible by generating high temperature
The high temperature generated when wearing would generally destroy the internal structure of field-effect tube, so that field-effect tube is damaged due to high temperature.
Below in conjunction with attached drawing, the technical scheme provided by various embodiments of the present application will be described in detail.
Embodiment one
The embodiment of the present application provides a kind of electrostatic protection apparatus, to alleviate in the prior art field-effect tube by electrostatic breakdown
The problem of forming irreversible damage, as shown in Figure 1, comprising: the electrostatic detection mould being electrically connected at least one electricity consumption module 11
Block 12；The power management module 14 being electrically connected at least one electricity consumption module 11；With the electrostatic detection module 12 and described
The control module 13 that power management module 14 is electrically connected；
The electrostatic detection module 12, trigger signal is generated when detecting that electrostatic potential meets protection condition；And by institute
It states trigger signal and is sent to the control module 13；
Control module 13 generates power-off signal according to the trigger signal；And the power-off signal is sent to power supply pipe
Manage module 14；
Power management module 14 stops powering to electricity consumption module corresponding with the power-off signal.
In scheme provided by the present application, when electrostatic potential meets protection condition, trigger signal is generated according to electrostatic signal,
And then power-off signal is generated, it is cut off the power according to power-off signal.Thus turn off the field-effect tube in electronic equipment, i.e. field-effect
It is not turned between source electrode and drain electrode in pipe.It is conductive without being formed between source electrode and drain electrode in the case that scene effect pipe is not turned on
Channel, therefore do not have electric current and pass through source electrode and drain electrode.This programme avoids source electrode and drain electrode of the high-pressure electrostatic by field-effect tube
Shi Zaocheng latch-up, and then the high-temperature damage field-effect tube as caused by latch-up is avoided, electronic equipment is thus improved to quiet
The protective capacities of electricity reduces damage of the electrostatic to electronic equipment.
One electricity consumption module 11 is shown in the application Fig. 1 and electrostatic detection module 12 is electrically connected, in actual application
In, can there are multiple identical or different electricity consumption modules 11 and electrostatic detection module 12 to be electrically connected.When electrostatic detection module 12
It when connecting multiple and different electricity consumption modules, takes the mobile phone as an example, display module, the touch-control that electrostatic detection module 12 can simultaneously with mobile phone
Module and fingerprint module are electrically connected.Simultaneously connect multiple and different electricity consumption modules electrostatic detection module 12 can simultaneously to it is multiple not
The electrostatic of same electricity consumption module realizes detection, and when any one electricity consumption module generates electrostatic, electrostatic detection module 12 can be right
Electrostatic potential is detected, and trigger signal is generated when detecting that electrostatic potential meets protection condition, and then realize to multiple use
The electrostatic protection of electric module.
The electricity consumption module 11 and 12 institute of electrostatic detection module that power management module 14 shown in the application Fig. 1 is electrically connected
The electricity consumption module 11 of connection is identical, and in actual application, the electricity consumption module that power management module 14 is electrically connected can be with
The electricity consumption module that electrostatic detection module 12 is connected is identical or different.When power management module 14 be electrically connected electricity consumption module with
It when the electricity consumption module difference that electrostatic detection module is connected, takes the mobile phone as an example, power management module 14 can be with display module electricity
Property connection, and electrostatic detection module 12 can be electrically connected with touch-control module, under this circuit structure, when electrostatic detection module
12 when detecting that touch-control module generates electrostatic signal, can be stopped to touching using power management module 14 by control module 13
It controls module for power supply and, when detecting electrostatic, disconnects important electricity consumption in time to flexibly monitor whether each electricity consumption module has electrostatic
The power supply of module is turned off using the field-effect tube of electric module by powering off, high-pressure electrostatic is avoided to puncture field-effect tube.
Based on above-mentioned electrostatic protection apparatus, wherein the electrostatic detection module 12 is specifically used for:
Trigger signal is generated when the peak value for detecting the electrostatic potential is more than safe voltage value.
Specifically, the electrostatic detection module 12 can detect whether the peak value of electrostatic potential is more than safe electricity by trigger
Pressure value, for example, safe voltage value is set as 5V, when the peak value of electrostatic potential is 7.5V, since 7.5V is greater than 5V, so this is quiet
Electro-detection module 12 generates trigger signal, and the trigger signal of generation is sent to control module 13, so that control module 13 is raw
At power-off signal, stopped by power management module 14 at least one electricity consumption module for power supply.Safe voltage value in the application
It can refer to the absolute value of voltage, i.e., when safe voltage value is set as 5V, safe voltage refers to voltage value between+5V and -5V
Voltage generated by electrostatic detection module 12 when the absolute value of electrostatic potential is then considered as electrostatic potential beyond above-mentioned safe voltage
Trigger signal.
Electrostatic detection module 12 in the application can detect voltage peak, judge current voltage be electricity consumption module just
Normal operating voltage or electrostatic potential, since electrostatic potential is often much higher than the normal working voltage of electricity consumption module, to electricity
Voltage crest value, which carries out detection, can accurately detect whether electronic equipment has electrostatic, and then realize the timely protection to electrostatic.
Based on above-mentioned electrostatic protection apparatus, wherein the electrostatic detection module 12 includes: trigger 121 and filter module
122；
The filter module 122, handles the electrostatic potential, reduces the peak value of the electrostatic potential；
The trigger 121 judges whether the peak value of the treated electrostatic potential is more than safe voltage value.
When have electrostatic it is attached on an electronic device when, the filter module 122 in detection module 12 provided by the present application can be to quiet
Piezoelectric voltage is handled, and is reduced electrostatic potential peak value, is avoided the excessively high damage trigger 121 of electrostatic potential peak value.Filter module 122
It tends to be filtered electrostatic pulse signal, electrostatic pulse signal high frequency signal and/or low frequency signal is exported, to reduce
The peak value of electrostatic pulse signal, since the peak value of electrostatic pulse signal is often much higher than the normal working voltage of electronic equipment, because
This also would generally be beyond preset peace in trigger 121 even if electrostatic pulse signal is filtered by filter module 122
Full voltage value, filter module 122 will not influence trigger 121 to the filtering of electrostatic pulse signal and sentence to electrostatic pulse signal
It is disconnected.Trigger 121 provided by the present application is able to achieve the identification to electrostatic pulse signal, is mainly according to electrical signal peak determination
No is electrostatic, and when recognizing electrostatic, trigger signal is can be generated in trigger 121, and trigger signal is sent to control module
13.Specifically, trigger it is unidentified to electrostatic when, low level output can be kept, i.e., export 0V to control module 13, work as touching
When hair device recognizes electrostatic potential beyond safe voltage value, high level signal is exported, i.e., exports 1V to control module 13, thus real
Now to the identification of electrostatic, and trigger signal is sent to control module 13.
Based on above-mentioned electrostatic protection apparatus, as shown in Fig. 2, the filter module 122 includes: connected in a series arrangement
One capacitor C1With the first inductance L1；Second capacitor C2；And the first resistor R connected with parallel way1With third capacitor C3；
The first capacitor C1With the first inductance L1It is connected to first node J1Between ground wire；
The second capacitor C2It is connected to the first node J1With second node J2Between；
The first resistor R1With the third capacitor C3It is connected to second node J2Between ground wire；
The trigger 121 is connected to the second node J2Between the control module 13.
In above-mentioned filter module 122, first capacitor C1With the first inductance L1Form first filter, first resistor R1With
Three capacitor C3Form second filter.Above-mentioned first filter and second filter play the role of reducing electrostatic potential peak value.
When electronic equipment detects electrostatic, electrostatic is flowed by the ESD line of induction, in first node J1Place, the part of electrostatic pulse signal
Electric current flow to ground wire by first filter, electrostatic potential peak value is reduced, in second node J2Place, the part of electrostatic pulse signal
Electric current flow to ground wire by second filter, further decreases electrostatic potential peak value.First filter in the application and second
Filter can reduce electrostatic potential peak value, avoid electrostatic pulse signal peak is excessively high from wounding trigger.
The second capacitor C in the application2It is mainly used for obstructing the DC current between trigger 121 and the ESD line of induction,
Under normal operating conditions, trigger 121 drives the direct current of trigger 121 possibly through second node J by direct current supply2、
First node J1, conducted to other electricity consumption modules by the ESD line of induction, which is possible to influence the normal of other electricity consumption modules
Work.As shown in Fig. 2, the second capacitor C in the application2The DC current for driving trigger can be blocked in first node J1, keep away
Exempt from the DC current to be conducted by the ESD line of induction to other electricity consumption modules, promotes electronic equipment overall stability.Moreover, working as electricity consumption
When module has electrostatic, second capacitor C2The peak value of electrostatic potential can be reduced to a certain degree, alleviate trigger 121 by high-pressure electrostatic
The case where pulse signal punctures.
As shown in Fig. 2, the ESD line of induction shown in figure can be the conducting wire of any electricity consumption module in electronic equipment, it can also
Be for connecting the conducting wire between different electricity consumption modules, the ESD line of induction can be one be also possible to it is a plurality of, can be simultaneously
Connect one or more electricity consumption modules.121 one end of trigger and filter module 122 are electrically connected in figure, and the other end can be with control
Molding block 13 is electrically connected, and is not shown in Fig. 2.
When have electrostatic adherence on an electronic device when, the electrostatic signal of formation is often similar to pulse signal, waveform comparison
Sharply, but the actual waveform of the electrostatic signal is related with electricity and discharge time.For the electronic equipment of antistatic effect difference, base
In Fig. 2 shows circuit structure, electrostatic can further be filtered by way of increasing filter, the specific structure of filter
It is not limited to the form of " capacitor+inductance " or " capacitor+resistance " provided by the present application, the filter in filter module can be one
Or it is multiple, according to the actual antistatic effect of electronic equipment, other filter constructions can be used, to carry out to electrostatic signal
Filtering, reduces the peak value of electrostatic signal, avoids the electrostatic breakdown trigger or other electronic modules generated.
Based on above-mentioned electrostatic protection apparatus provided by the present application, the power management module 14 is also used to:
Restore when the time for stopping power supply reaching default power-off duration to the corresponding electricity consumption module of the power-off signal
Power supply.
Referring to Fig. 1, power management module 14 is connected at least one electricity consumption module, and the power-off signal in the application is by controlling
Module 13 generates, which specifically can be (the Central Processing of processor 13 in electronic equipment
Unit, CPU), power management module 14 and above-mentioned processor 13 are electrically connected, specifically, due to frequently including in electronic equipment
Multiple electricity consumption modules, such as: touch-control module, display module, fingerprint identification module.It is above-mentioned according to the practical structures of electronic equipment
Power management module 14 can be one and provide the power supply module of a variety of driving signals, for multiple identical or different electricity consumptions
Module provides identical or different driving signal；Above-mentioned power management module 14 also can wrap containing multiple sub- power supply modules, often
A sub- power supply module and an electricity consumption module are electrically connected, and every sub- power supply module is used to provide for the electricity consumption module being electrically connected
Driving signal.When power management module 14 includes two sub- power supply modules, referring to Fig. 3, in the present embodiment with power management mould
The electricity consumption module that block 14 is electrically connected is display module 111 and touch-control module 112, provides driving signal for display module 111
Sub- power supply module be display power supply module 141, be touch-control module 112 provide driving signal sub- power supply module be touch-control power mould
Block 142.
Specifically, display power supply module 141 is controlled by processor 13 and touch-control power supply module 142 is powered or power-off, when having
For electrostatic adherence in electronic equipment, electrostatic pulse signal flow to filter module 122 by the ESD line of induction, the electrostatic arteries and veins by filtering
It rushes the triggered device 122 of signal to detect, trigger signal is generated by trigger 122, and trigger signal is sent to processor 13, handled
Device generates power-off signal according to trigger signal, and sends the power-off signal to power management module 14.In the structure shown in Fig. 3
In, power-off signal may include " display module power-off " and " touch-control module power-off ", show power supply module 141 according to above-mentioned power-off
The power supply of signal cut display module 111, touch-control power supply module 142 cut off the electricity of touch-control module 112 according to above-mentioned power-off signal
Source.
After being cut off the power by power management module 14, the field-effect tube in display module 111 and touch-control module 112 is in
Off state is not turned on channel between source electrode and drain electrode, therefore, even if the electrostatic pulse signal of high voltage flow to display
Field-effect tube in module 111 or touch-control module 112 also can not flow to drain electrode from the source electrode of field-effect tube, and then avoid source electrode
Puncture between drain electrode, avoid latch-up caused by high-pressure electrostatic pulse signal, prevents the height generated by latch-up
The phenomenon that temperature damage field-effect tube.
It in above-mentioned processor 13, can wrap containing timer, the timer is since processor 13 sends power-off signal
Timing, when the time for stopping power supply reaching default power-off duration, processor 13 sends power on signal to power management module 14,
Restore the power supply to the corresponding electricity consumption module of power-off signal.Above-mentioned default power-off duration can be 1000ms, in this 1000ms
Between in, electrostatic discharges in the electronic device, tends to flow out electronic equipment by ground wire.Scheme provided by the present application can be quiet
Electric current is turned off field-effect tube when electronic equipment, and high-pressure electrostatic signal is avoided to cause to damage to field-effect tube, moreover, stopping supplying
The electric time makes the electricity consumption module recovery working condition just powered off when reaching default power-off duration, reduces power-off and transports to electronic equipment
Capable influence avoids power-off from reducing the service performance of electronic equipment.
Based on above-mentioned electrostatic protection apparatus, the power management module 14 is also used to:
In predetermined time period, when recovery reaches pre- to the number of the power supply of the corresponding electricity consumption module of the power-off signal
If when Safe Times, stopping powering to the corresponding electricity consumption module of the power-off signal；
Restore the power supply to the corresponding electricity consumption module of the power supply signal when receiving power supply signal.
The environment of electronic equipment operation is diversified, it may be possible to the environment of high temperature and humidity, it is also possible to be low temperature
Dry environment.Electrostatic is more prone to produce in the environment of low temperature drying, therefore, electronic equipment in the environment of low temperature drying more
It is easy by damage by static electricity.The electrostatic of electronic equipment is likely to be a pulse signal, it is also possible to be multiple continuous pulse letters
Number, the peak value of each pulse signal is possible to identical and is also possible to difference.Any one of electrostatic pulse signal is possible to
Puncture the field-effect tube of open state, therefore, electrostatic damage caused by electronic equipment can effectively be avoided by turning off field-effect tube in time
Wound.
Referring to Fig. 3, the power management module 14 in application scheme is in predetermined time period, when the number to restore electricity
When reaching default Safe Times, the corresponding electricity consumption module of power-off signal is stopped powering.In the present embodiment, predetermined time period is
30 seconds, default Safe Times can be 5 times, preset power-off when it is 1 second a length of, when power management module 14 in 30 seconds " power-off-on
When electricity " reaches 5 times, power management module 14 stops powering to electricity consumption module, does not power on when reaching default power-off duration, Zhi Daojie
Restore the power supply to the corresponding electricity consumption module of the power-off signal when receiving power supply signal.
Specifically, the power supply signal can be preset according to actual needs, power supply signal can be by following any behaviour
It triggers: pressing specific keys, touch fingerprint identification region etc..Preferably, which is triggered by physical button, due to electricity
The electricity consumption module of sub- device interrupt electricity usually contains touch-control module, and therefore, touch-control module can not receive in the event of a power failure
Touch command, and physical button is usually triggered by pressed by external force, such as the power button, volume key, the function that include in the mobile phone of part
Key etc., in the case where the power-off of electricity consumption module, these physical buttons still be can be used, therefore the trigger signal of physical button is set
It can guarantee that electronic equipment normally receives power supply signal for power supply signal, electrical equipment powered in time, is restoring electronic equipment just
Normal working condition.
When repeated detection is to electrostatic in a short time for electronic equipment, it is easy to produce static electricity electronic equipment can be considered as
Under environment, in the present embodiment, reach after 5 times " power off-power on ", it is more likely that electrostatic is generated again, it is high-frequency " disconnected
Electricity-power on " frequently can lead to electronic equipment accelerated ageing, be unfavorable for extending the service life of electronic equipment.The application is restoring
When the number of power supply reaches default Safe Times, the corresponding electricity consumption module of power-off signal is stopped powering, during stopping power supply,
The electrostatic that electronic equipment generates is not easy to puncture the field-effect tube of electronics device interrupt electricity module, moreover, avoiding more in the short time
Secondary " power off-power on ", can slow down the aging of electronic equipment, prolong the service life.It is powered in time when receiving power supply signal, energy
Guarantee the basic service performance of electronic equipment.
Embodiment two
The embodiment of the present application provides a kind of electrostatic protection method, to alleviate in the prior art field-effect tube by electrostatic breakdown
The problem of forming irreversible damage, as shown in figure 4, electrostatic protection method provided by the present application the following steps are included:
Step 41: trigger signal is generated when detecting that electrostatic potential meets protection condition.
Step 42: power-off signal is generated according to the trigger signal.
Step 43: electricity consumption module corresponding with the power-off signal is stopped powering.
In scheme provided by the present application, when electrostatic potential meets protection condition, trigger signal is generated according to electrostatic signal,
And then power-off signal is generated, it is cut off the power according to power-off signal.Thus turn off the field-effect tube in electronic equipment, i.e. field-effect
It is not turned between source electrode and drain electrode in pipe.It is conductive without being formed between source electrode and drain electrode in the case that scene effect pipe is not turned on
Channel, therefore do not have electric current and pass through source electrode and drain electrode.This programme avoids source electrode and drain electrode of the high-pressure electrostatic by field-effect tube
Shi Zaocheng latch-up, and then the high-temperature damage field-effect tube as caused by latch-up is avoided, electronic equipment is thus improved to quiet
The protective capacities of electricity reduces damage of the electrostatic to electronic equipment.
The method based on the above embodiment, above-mentioned steps 41 are raw when detecting that electrostatic potential meets protection condition
At trigger signal, specifically include:
Electrostatic trigger signal is generated when the peak value for detecting the electrostatic potential is more than safe voltage value.
Application scheme can detect voltage peak, judge current voltage be electricity consumption module normal working voltage or
Electrostatic potential, since electrostatic potential is often much higher than the normal working voltage of electricity consumption module, voltage peak is detected
It can accurately detect whether electrostatic adherence on an electronic device, and then realize the timely protection to electrostatic.
The method provided based on the above embodiment, it is raw when the peak value for detecting the electrostatic potential is more than safe voltage value
At electrostatic trigger signal, specifically include:
The electrostatic potential is handled, the peak value of the electrostatic potential is reduced；
Electrostatic trigger signal is generated when the peak value for detecting treated electrostatic potential is more than safe voltage value.
When generating electrostatic in electronic equipment, the application handles the electrostatic potential of generation, reduces electrostatic potential peak
Value avoids the excessively high breakdown triggering device of electrostatic potential peak value generated.Specifically can by filter module to electrostatic pulse signal into
Row filtering, exports electrostatic pulse signal high frequency signal and/or low frequency signal, to reduce the peak value of electrostatic pulse signal.This
The scheme that application provides is able to achieve the identification to electrostatic pulse signal, mainly determines whether that electrostatic is attached according to electrical signal peak
On an electronic device, trigger signal is generated when recognizing electrostatic, reduces electrostatic to the damage of electronic equipment to power off in time
Wound.
The method provided based on the above embodiment, referring to Fig. 5, after above-mentioned steps 43, further includes:
Step 44: restoring when the time for stopping power supply reaching default power-off duration to the corresponding electricity consumption of the power-off signal
The power supply of module.
By taking display module and touch-control module as an example, in this example display module be liquid crystal display die set (LCD Module,
LCM), touch-control module is capacitance touching control panel (Capacity Touch Panel, CTP).Scheme provided by the present application can also be with
It applies in other display modules, touch-control module.
After stopping power supply, the field-effect tube of electricity consumption module is in off state, is not turned between source electrode and drain electrode
Therefore channel even if the electrostatic pulse signal of high voltage flow to field-effect tube, also can not flow to leakage from the source electrode of field-effect tube
Pole, and then avoid puncturing between source electrode and drain electrode, latch-up caused by high-pressure electrostatic pulse signal is avoided, is prevented by fastening with a bolt or latch
The phenomenon that locking the high-temperature damage field-effect tube that effect generates.
In the present solution, can use timer timing since sending power-off signal, reach when the time for stopping power supply
Power on signal is sent when default power-off duration, restores the power supply to the corresponding electricity consumption module of power-off signal.When above-mentioned default power-off
Length can be 1000ms, and in this 1000ms time, electrostatic discharges in the electronic device, tends to flow out electronics by ground wire
Equipment.Scheme provided by the present application can turn off field-effect tube when electrostatic flows through electronic equipment, avoid high-pressure electrostatic signal to field
Effect pipe causes to damage, moreover, stopping making the electricity consumption module recovery just powered off when power-on time reaches default power-off duration
Working condition reduces the influence that power-off runs electronic equipment, power-off is avoided to reduce the service performance of electronic equipment.
The method provided based on the above embodiment, referring to Fig. 6, above-mentioned steps 43, to use corresponding with the power-off signal
Electric module stops power supply, further includes:
Step 45: in predetermined time period, when time for restoring the power supply to the corresponding electricity consumption module of the power-off signal
When number reaches default Safe Times, the corresponding electricity consumption module of the power-off signal is stopped powering；
Step 46: restoring the power supply to the corresponding electricity consumption module of the power supply signal when receiving power supply signal.
Specifically, the power supply signal can be preset according to actual needs, power supply signal can be pressing specific keys,
Touch fingerprint identification region etc..Preferably, which can be triggered by physical button, due to what is powered off in electronic equipment
Electricity consumption module usually contains touch-control module, and therefore, touch-control module can not receive touch command in the event of a power failure, and physics
Key is usually triggered by pressed by external force, such as power button, volume key, function key for including in the mobile phone of part etc., in electricity consumption module
In the case where power-off, these physical buttons still be can be used, therefore the trigger signal of physical button is set as power supply signal can protect
Card electronic equipment normally receives power supply signal, powers in time to electrical equipment, restores the normal operating conditions of electronic equipment.
When electronic equipment repeatedly generates electrostatic in a short time, electronic equipment can be considered as and be in ring easy to produce static electricity
Under border, in the present embodiment, reach after 5 times " power off-power on ", it is more likely that generate electrostatic, high-frequency " power-off-again
Power on " it frequently can lead to electronic equipment accelerated ageing, it is unfavorable for extending the service life of electronic equipment.The application is restoring electricity
Number when reaching default Safe Times, the corresponding electricity consumption module of power-off signal is stopped powering, during stopping power supply, electronics
The electrostatic that equipment generates is not easy to puncture the field-effect tube of electronics device interrupt electricity module, moreover, avoiding in the short time multiple
" power off-power on ", can slow down the aging of electronic equipment, prolong the service life.It powers on, can guarantee in time when receiving power supply signal
The basic service performance of electronic equipment.
Embodiment three
A kind of hardware structural diagram of Fig. 7 mobile terminal of each embodiment to realize the present invention, the mobile terminal 700
Including but not limited to: radio frequency unit 701, audio output unit 703, input unit 704, sensor 705, is shown network module 702
Show the components such as unit 706, user input unit 707, interface unit 708, memory 709, processor 710 and power supply 711.
It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 7 does not constitute the restriction to mobile terminal, it is mobile whole
End may include perhaps combining certain components or different component layouts than illustrating more or fewer components.In the present invention
In embodiment, mobile terminal includes but is not limited to mobile phone, tablet computer, laptop, palm PC, car-mounted terminal, can wear
Wear equipment and pedometer etc..
Wherein, processor 710, for generating trigger signal when detecting that electrostatic potential meets protection condition；According to institute
It states trigger signal and generates power-off signal；Electricity consumption module corresponding with the power-off signal is stopped powering.
In scheme provided by the present application, when electrostatic potential meets protection condition, trigger signal is generated according to electrostatic signal,
And then power-off signal is generated, it is cut off the power according to power-off signal.Thus turn off the field-effect tube in electronic equipment, i.e. field-effect
It is not turned between source electrode and drain electrode in pipe.It is conductive without being formed between source electrode and drain electrode in the case that scene effect pipe is not turned on
Channel, therefore do not have electric current and pass through source electrode and drain electrode.This programme avoids source electrode and drain electrode of the high-pressure electrostatic by field-effect tube
Shi Zaocheng latch-up, and then the high-temperature damage field-effect tube as caused by latch-up is avoided, electronic equipment is thus improved to quiet
The protective capacities of electricity reduces damage of the electrostatic to electronic equipment.
It should be understood that the embodiment of the present invention in, radio frequency unit 701 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 710 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 701 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 701 can also by wireless communication system and network and other set
Standby communication.
Mobile terminal provides wireless broadband internet by network module 702 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 703 can be received by radio frequency unit 701 or network module 702 or in memory 709
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 703 can also be provided and be moved
The relevant audio output of specific function that dynamic terminal 700 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 703 includes loudspeaker, buzzer and receiver etc..
Input unit 704 is for receiving audio or video signal.Input unit 704 may include graphics processor
(Graphics Processing Unit, GPU) 7041 and microphone 7042, graphics processor 7041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 706.Through graphics processor 7041, treated that picture frame can be deposited
Storage is sent in memory 709 (or other storage mediums) or via radio frequency unit 701 or network module 702.Mike
Wind 7042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 701 is converted in the case where telephone calling model.
Mobile terminal 700 further includes at least one sensor 705, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 7061, and proximity sensor can close when mobile terminal 700 is moved in one's ear
Display panel 7061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 705 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 706 is for showing information input by user or being supplied to the information of user.Display unit 706 can wrap
Display panel 7061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 7061.
User input unit 707 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 707 include touch panel 7071 and
Other input equipments 7072.Touch panel 7071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 7071 or in touch panel 7071
Neighbouring operation).Touch panel 7071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 710, receiving area
It manages the order that device 710 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 7071.In addition to touch panel 7071, user input unit 707 can also include other input equipments
7072.Specifically, other input equipments 7072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 7071 can be covered on display panel 7061, when touch panel 7071 is detected at it
On or near touch operation after, send processor 710 to determine the type of touch event, be followed by subsequent processing device 710 according to touching
The type for touching event provides corresponding visual output on display panel 7061.Although in Fig. 7, touch panel 7071 and display
Panel 7061 is the function that outputs and inputs of realizing mobile terminal as two independent components, but in some embodiments
In, can be integrated by touch panel 7071 and display panel 7061 and realize the function that outputs and inputs of mobile terminal, it is specific this
Place is without limitation.
Interface unit 708 is the interface that external device (ED) is connect with mobile terminal 700.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 708 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in mobile terminal 700 or can be used in 700 He of mobile terminal
Data are transmitted between external device (ED).
Memory 709 can be used for storing software program and various data.Memory 709 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 709 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 710 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 709, and calls and is stored in storage
Data in device 709 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 710 may include one or more processing units；Preferably, processor 710 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 710.
Mobile terminal 700 can also include the power supply 711 (such as battery) powered to all parts, it is preferred that power supply 711
Can be logically contiguous by power-supply management system and processor 710, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 700 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor 710, and memory 709 is stored in
On memory 709 and the computer program that can run on the processor 710, the computer program are executed by processor 710
A kind of above-mentioned each process of electrostatic protection method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating,
Which is not described herein again.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize a kind of each process of above-mentioned electrostatic protection method embodiment when being executed by processor,
And identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium,
Such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, letter
Claim RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (11)
1. a kind of electrostatic protection apparatus characterized by comprising the electrostatic detection mould being electrically connected at least one electricity consumption module
Block；The power management module being electrically connected at least one electricity consumption module；With the electrostatic detection module and the power management
The control module that module is electrically connected；
The electrostatic detection module, trigger signal is generated when detecting that electrostatic potential meets protection condition；And by the triggering
Signal is sent to the control module；
Control module generates power-off signal according to the trigger signal；And the power-off signal is sent to power management module；
Power management module stops powering to electricity consumption module corresponding with the power-off signal.
2. electrostatic protection apparatus as described in claim 1, which is characterized in that the electrostatic detection module is specifically used for:
Trigger signal is generated when the peak value for detecting the electrostatic potential is more than safe voltage value.
3. electrostatic protection apparatus as claimed in claim 2, which is characterized in that the electrostatic detection module include: trigger and
Filter module；
The filter module handles the electrostatic potential, reduces the peak value of the electrostatic potential；
The trigger judges whether the peak value of the treated electrostatic potential is more than safe voltage value.
4. electrostatic protection apparatus as claimed in claim 3, which is characterized in that the filter module includes: to connect in a series arrangement
The first capacitor connect and the first inductance；Second capacitor；And with the first resistor and third capacitor of parallel way connection；
The first capacitor and first inductance connection are between first node and ground wire；
Second capacitance connection is between the first node and second node；
The first resistor and the third capacitance connection are between second node and ground wire；
The trigger is connected between the second node and the control module.
5. electrostatic protection apparatus as described in claim 1, which is characterized in that the power management module is also used to:
Restore the power supply to the corresponding electricity consumption module of the power-off signal when the time for stopping power supply reaching default power-off duration.
6. electrostatic protection apparatus as claimed in claim 5, which is characterized in that the power management module is also used to:
In predetermined time period, when recovery reaches default peace to the number of the power supply of the corresponding electricity consumption module of the power-off signal
When total degree, the corresponding electricity consumption module of the power-off signal is stopped powering；
Restore the power supply to the corresponding electricity consumption module of the power supply signal when receiving power supply signal.
7. a kind of electrostatic protection method characterized by comprising
Trigger signal is generated when detecting that electrostatic potential meets protection condition；
Power-off signal is generated according to the trigger signal；
Electricity consumption module corresponding with the power-off signal is stopped powering.
8. the method for claim 7, which is characterized in that the generation when detecting that electrostatic potential meets protection condition
Trigger signal specifically includes:
Electrostatic trigger signal is generated when the peak value for detecting the electrostatic potential is more than safe voltage value.
9. method according to claim 8, which is characterized in that in the peak value for detecting the electrostatic potential more than safe voltage
Electrostatic trigger signal is generated when value, is specifically included:
The electrostatic potential is handled, the peak value of the electrostatic potential is reduced；
Electrostatic trigger signal is generated when the peak value for detecting treated electrostatic potential is more than safe voltage value.
10. the method for claim 7, which is characterized in that stop to electricity consumption module corresponding with the power-off signal
After power supply, further includes:
Restore the power supply to the corresponding electricity consumption module of the power-off signal when the time for stopping power supply reaching default power-off duration.
11. method as claimed in claim 10, which is characterized in that stop to electricity consumption module corresponding with the power-off signal
After power supply, further includes:
In predetermined time period, when recovery reaches default peace to the number of the power supply of the corresponding electricity consumption module of the power-off signal
When total degree, the corresponding electricity consumption module of the power-off signal is stopped powering；
Restore the power supply to the corresponding electricity consumption module of the power supply signal when receiving power supply signal.
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| CN201810983594.0A CN109038482A (en) | 2018-08-27 | 2018-08-27 | A kind of electrostatic protection apparatus and method |
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| CN111257683A (en) * | 2020-03-30 | 2020-06-09 | Tcl华星光电技术有限公司 | Prompting method and device for electrostatic discharge test |
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| CN116595761A (en) * | 2023-05-17 | 2023-08-15 | 东莞市弘伟应急科技有限公司 | Production method and device of antistatic firefighter uniform fabric |
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