CN104007800B - A kind of reset circuit, electronic equipment and repositioning method - Google Patents
A kind of reset circuit, electronic equipment and repositioning method Download PDFInfo
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- CN104007800B CN104007800B CN201310061842.3A CN201310061842A CN104007800B CN 104007800 B CN104007800 B CN 104007800B CN 201310061842 A CN201310061842 A CN 201310061842A CN 104007800 B CN104007800 B CN 104007800B
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Abstract
The present invention discloses a kind of reset circuit, electronic equipment and repositioning method, and the reset circuit includes：Main control module, powered from the first power supply；Charge-discharge modules, powered from the first power supply；Reseting module, it is connected respectively with main control module and charge-discharge modules；Wherein, the first moment after the first operating voltage that the first power supply provides is reduced to first threshold, main control module power down, charge-discharge modules are in discharge condition and powered to reseting module；The second moment after the first moment, charge-discharge modules electric discharge terminate, and the period between the first moment and the second moment is less than a power cycle of the first operating voltage；The 3rd moment after the second moment after the first operating voltage is more than or equal to Second Threshold, when charge-discharge modules are in charging process, trigger reseting module and provide the first reset signal to main control module, main control module enable according to the first reseting signal reset, wherein, Second Threshold is more than first threshold.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of reset circuit, electronic equipment and repositioning method.
Background technology
With the continuous development of scientific technology, electronic technology has also obtained development at full speed, and the species of electronic product is also got over
Come more, people have also enjoyed the various facilities that development in science and technology is brought.Present people can be set by various types of electronics
It is standby, enjoy the comfortable life brought with development in science and technology.For example, TV has become an indispensable angle in people's life
Color, people can watch TV play, news etc. TV programme by TV, mitigate the pressure that modern fast pace life is brought
Power.
At present, it refer to Fig. 1, Fig. 1 is the module diagram of the electronic device circuitry such as television set in the prior art, such as Fig. 1
Shown, power supply module 101 is connected with main control module 102 with reseting module 103 respectively, reseting module 103 and the phase of main control module 102
Even, main control module 102 can specifically include the main control chip of television set, and reseting module 103 specifically can include one and reset electricity
Road, a reset signal is provided to main control module 102 by reseting module 103, so that main control module 102 can be according to multiple
Position signal resets, then cause the electronic equipment such as television set on startup can normal work, in addition, the electronic equipment such as television set
Also include a standby module 104, standby module 104 is standby for being provided when the electronic equipments such as television set are in standby mode
Voltage.
In actual applications, the operating voltage that power supply module 101 provides is typically by alternating current (such as the civilian exchange in China
Electric standard：Voltage 220V, frequency 50HZ) through over commutation, decompression, therefore, can be inevitably present in operating voltage
Some alternating components, these alternating components can greatly influence work and the life-span of electronic equipment, therefore for electricity such as television sets
The normal operation of sub- equipment, also these alternating components can be filtered out using charge-discharge modules 105, namely filtered out in circuit
Ripple, charge-discharge modules 105 specifically electronic component, the impedance value in charge-discharge modules 104 be able to can typically compare including electric capacity etc.
It is larger, meanwhile, in order to ensure the electrifying timing sequence of modules in the electronic equipments such as television set, charge-discharge modules 105 are arranged at confession
Between electric module 101 and reseting module 103.
But the present inventor has found that above-mentioned technology is at least deposited during inventive technique scheme in realizing the embodiment of the present invention
In following technical problem：
In the prior art, as shown in figure 1, because of power network fluctuation and caused by transient voltage fall when, the electronics such as television set
The meeting power down of main control module 102 of equipment, after voltage recovery, main control module 102 can recover upper electricity again, in voltage decline abruptly
During rise, reseting module 103 can provide multiple because of the electric discharge of charge-discharge modules 105 without normal direction main control module 102
Position signal, so main control module 102 can not work, the electronic equipment such as television set can be in deadlock state, power button and remote control
Treat that switch all cannot respond to the operation of user, it is necessary to which the power line that user plugs the electronic equipments such as television set again just can be with extensive
It is multiple, therefore, the electronic equipment such as television set technical problem that presence can not restart when transient voltage falls in the prior art.
Specifically, such as when the alternating current voltage in China drops to 180V by 220V moments, the electronics such as television set is set
The operating voltage that standby power supply module 101 provides can reduce therewith, and main control module 102 can fall because operating voltage reduces
Electricity, charge-discharge modules 105 can then start to discharge and power to reseting module 103, and reseting module 103 remains in high level shape
State, and when alternating current voltage is gone up to 220V by 180V, main control module 102 re-powers, and charge-discharge modules 105 start again
Charging, reseting module 103 remains in high level state, and reseting module 103 needs to become from low level state and turns to high level
Reset signal could be provided to main control module 102 after state, so now reseting module 103 is due to being constantly in high level shape
State, no normal direction main control module 102 provide reset signal, and main control module 102 is after re-powering because reset letter can not be obtained
Number, so electrification reset This move can not be performed, also just can not normally it start working, so as to electronic equipment meetings such as television sets
In deadlock state, power button and remote control standby key all cannot respond to the operation of user, it is necessary to which user plugs television set again
Power line Deng electronic equipment can just recover.
The content of the invention
The embodiment of the present invention solves in the prior art by providing a kind of reset circuit, electronic equipment and repositioning method
The electronic equipments such as the television set technical problem that presence can not restart when transient voltage falls.
The embodiments of the invention provide a kind of reset circuit, and applied in an electronic equipment, the reset circuit includes：It is main
Module is controlled, is powered from the first power supply；Charge-discharge modules, powered from first power supply；Reseting module, respectively with institute
State main control module and charge-discharge modules connection；Wherein, the first operating voltage provided in first power supply is reduced to the
The first moment after one threshold value, the main control module power down, the charge-discharge modules are in discharge condition and to the reset moulds
Block is powered；The second moment after first moment, charge-discharge modules electric discharge terminate, first moment with it is described
Period between second moment is less than a power cycle of first operating voltage；It is more than in first operating voltage
Equal to the 3rd moment after second moment after Second Threshold, it is in the charge-discharge modules in charging process
When, trigger the reseting module and provide the first reset signal to the main control module so that the main control module can be according to institute
The first reseting signal reset is stated, wherein, the Second Threshold is more than the first threshold, and the charge-discharge modules are specially an electricity
Molar block, the capacitance of the capacitance module are less than the first preset value so that the capacitance module is in one power cycle
Interior can discharge is terminated.
Alternatively, the main control module is specially a main control chip, and the main control chip includes a reset signal reception pipe
Pin, the reseting module receive pin with the reset signal and are connected.
Alternatively, the capacitance of the capacitance module is more than the second preset value so that passes through the ripple of the reseting module
Magnitude of voltage is less than a default ripple voltage value.
The embodiment of the present invention also provides a kind of electronic equipment, including：Casing；Electric supply installation, it is arranged in the casing；Such as
Reset circuit described in previous embodiment, it is arranged in the casing, is connected with the electric supply installation.
On the other hand the embodiment of the present invention also provides a kind of repositioning method, applied to an electronic equipment, the electronic equipment
Including a reset circuit, the reset circuit includes main control module, charge-discharge modules and reseting module, and the main control module is from
One power supply is powered, and the charge-discharge modules are powered from first power supply, the reseting module respectively with the master
Controlling module and charge-discharge modules connection, methods described includes：Reduced in the first operating voltage that first power supply provides
The first moment after to first threshold, the main control module power down, the charge-discharge modules are in discharge condition and to described multiple
Position module discharge；The second moment after first moment, charge-discharge modules electric discharge terminate, first moment with
Period between second moment is less than a power cycle of first operating voltage；In first operating voltage
More than or equal to the 3rd moment after second moment after Second Threshold, charging process is in the charge-discharge modules
When middle, trigger the reseting module and provide the first reset signal to the main control module so that the main control module being capable of basis
First reseting signal reset, wherein, the Second Threshold is more than the first threshold, and the charge-discharge modules are specially one
Capacitance module, the capacitance of the capacitance module are less than the first preset value so that the capacitance module is in one power supply week
It can discharge and terminate in phase..
Alternatively, the main control module is specially a main control chip, and the main control chip includes a reset signal reception pipe
Pin, the reseting module receive pin with the reset signal and are connected.
Alternatively, the capacitance of the capacitance module is more than the second preset value so that passes through the ripple of the reseting module
Magnitude of voltage is less than a default ripple voltage value.
The one or more technical schemes provided in the embodiment of the present invention, have at least the following technical effects or advantages：
1st, because the charge-discharge modules in the embodiment of the present invention can be put in a power cycle of the first operating voltage
Electricity terminates, so the first moment after the first operating voltage that the first power supply provides is reduced to first threshold, main control module fall
Electricity, charge-discharge modules are in discharge condition and powered to reseting module, the second moment after the first moment, charge-discharge modules
Electric discharge terminates, the period between the first moment and the second moment be less than the first operating voltage a power cycle, and
At the 3rd moment after the second moment that first operating voltage is more than or equal to after Second Threshold, charging is in charge-discharge modules
During when, triggering reseting module to main control module provide the first reset signal so that main control module can according to first reset
Signal resets, and then electronic equipment is realized restarting automatically, therefore solves the electronic equipment such as television set in the prior art
The technical problem that presence can not restart when transient voltage falls.
2nd, exist when transient voltage falls and can not open again due to solving the electronic equipment such as television set in the prior art
Dynamic technical problem, so not needing user to plug the power lines of the electronic equipments such as television set again to restart television set manually
, then improve the Consumer's Experiences of the electronic equipments such as television set.
Brief description of the drawings
Fig. 1 is the functional block diagram of the electronic equipment such as television set in the prior art；
Fig. 2 is the functional block diagram of reset circuit provided in an embodiment of the present invention；
Fig. 3 is the flow chart of repositioning method provided in an embodiment of the present invention；
Fig. 4 is the oscillogram provided in an embodiment of the present invention by oscillograph test reset circuit；
Fig. 5 is the electrifying timing sequence figure of modules in electronic equipment provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that reseting module provided in an embodiment of the present invention is connected with main control module；
Fig. 7 is the functional block diagram of electronic equipment provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention solves in the prior art by providing a kind of reset circuit, electronic equipment and repositioning method
The electronic equipments such as the television set technical problem that presence can not restart when transient voltage falls.
Technical scheme in the embodiment of the present invention is deposited to solve the electronic equipments such as above-mentioned television set when transient voltage falls
It is as follows in the technical problem that can not be restarted, general thought：
The embodiments of the invention provide a kind of reset circuit, and applied in an electronic equipment, the reset circuit can include：
Main control module, powered from the first power supply；Charge-discharge modules, powered from the first power supply；Reseting module, respectively with master control
Module and charge-discharge modules connection；Wherein, first after the first operating voltage that the first power supply provides is reduced to first threshold
Moment, main control module power down, charge-discharge modules are in discharge condition and powered to reseting module；Second after the first moment
Moment, charge-discharge modules electric discharge terminate, and the period between the first moment and the second moment is less than one of the first operating voltage
Power cycle；The 3rd moment after the second moment after the first operating voltage is more than or equal to Second Threshold, in discharge and recharge
When module is in charging process, triggering reseting module provides the first reset signal to main control module so that main control module can
According to the first reseting signal reset, and then electronic equipment is set to realize restarting automatically, wherein, Second Threshold is more than the first threshold
Value.
It is can be seen that by above-mentioned part because the charge-discharge modules in the embodiment of the present invention can be in the first operating voltage
A power cycle in electric discharge terminate, so being reduced to the after first threshold in the first operating voltage that the first power supply provides
One moment, main control module power down, charge-discharge modules are in discharge condition and give reseting module power supply, and the after the first moment
Two moment, charge-discharge modules electric discharge terminate, and the period between the first moment and the second moment is less than the one of the first operating voltage
Individual power cycle, and the 3rd moment after the second moment after the first operating voltage is more than or equal to Second Threshold,
When charge-discharge modules are in charging process, triggering reseting module provides the first reset signal to main control module so that master control mould
Block can be according to the first reseting signal reset, and then electronic equipment is realized restarting automatically, therefore solves prior art
The electronic equipments such as the middle television set technical problem that presence can not restart when transient voltage falls.
Simultaneously as solve in the prior art the electronic equipment such as television set when transient voltage falls exist can not be again
The technical problem of startup, so not needing user to plug the power lines of the electronic equipments such as television set again to restart television set manually
, then improve the Consumer's Experiences of the electronic equipments such as television set.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
It refer to Fig. 2, Fig. 2 is the functional block diagram of reset circuit provided in an embodiment of the present invention, and the reset circuit can be with
Applied in an electronic equipment, in actual applications, the electronic equipment can be television set or other electricity of same type
The display of sub- equipment for example for computer etc., is not limited herein.As shown in Fig. 2 the reset circuit includes：Main control module
201, powered from the first power supply, can be specifically to be powered by the first power supply receiving terminal from the first power supply；Discharge and recharge mould
Block 202, powered from the first power supply, can be specifically to be powered by second source receiving terminal from the first power supply；Reset mould
Block 203, it is connected respectively with main control module 201 and charge-discharge modules 202.
On the other hand the embodiment of the present invention also provides a kind of repositioning method, refer to Fig. 3, Fig. 3 is that the embodiment of the present invention carries
The flow chart of the repositioning method of confession, as shown in figure 3, this method includes：
S1：The first moment after the first operating voltage that the first power supply provides is reduced to first threshold, main control module fall
Electricity, charge-discharge modules are in discharge condition and discharged to reseting module；
S2：At the second moment after the first moment, charge-discharge modules electric discharge terminates, between the first moment and the second moment
Period be less than the first operating voltage a power cycle；
S3：The 3rd moment after the second moment after the first operating voltage is more than or equal to Second Threshold, in charge and discharge
When electric module is in charging process, triggering reseting module provides the first reset signal to main control module so that main control module energy
Enough according to the first reseting signal reset, wherein, Second Threshold is more than first threshold.
Repositioning method provided in an embodiment of the present invention can be applied in the electronics including above-mentioned described reset circuit
, will be so that electronic equipment be television set as an example, with reference to Fig. 2 and Fig. 3, to be lifted in detail in ensuing part in equipment
Example description.
Fig. 2 and Fig. 3 are please also refer to, in step sl, first is reduced in the first operating voltage that the first power supply provides
At the first moment after threshold value, main control module power down, charge-discharge modules are in discharge condition and discharged to reseting module, specific next
Say, can be because power network fluctuation and caused by transient voltage fall when, the first operating voltage that the first power supply provides falls below the
One threshold value, can not meet the normal work of main control module 201, thus the power down of main control module 201, charge-discharge modules 202 due to
First operating voltage has been stored with certain electricity before being reduced to first threshold, so at the first moment, charge-discharge modules 202
Powered in discharge condition and to reseting module 203.
In actual applications, main control module 201 can be the main control chip of television set, and the main control chip can include power supply
Pin receives pin with reset signal, and the power pin of the main control chip can be the first power supply receiving terminal of main control chip,
Reseting module 203 receives pin with the reset signal and is connected, to provide reset signal to main control module 201.
In actual applications, main control module 201 can be model MT5505 SOC (System onChip, it is system-level
Chip or on-chip system) chip, in a particular application or other same types chip such as MT8222 chips etc.,
It is of course also possible to be other chips that the technical staff belonging to this area can use, it is not limited herein.
Charge-discharge modules 202 can be specifically a capacitance module, and the capacitance of the capacitance module is less than the first preset value,
Terminate so that the capacitance module can discharge in a power cycle of the first operating voltage, i.e., in the first operating voltage moment
When falling, in a power cycle of the first operating voltage, charge-discharge modules 202, which can discharge, to be terminated, so that
After one operating voltage is gone up, reseting module 203 can be triggered to main control module 201 in the charging process of charge-discharge modules 202
One reset signal is provided so that main control module 201 can perform reset according to the first reset signal that reseting module 203 provides,
Then the electronic equipment is enable to realize restarting automatically when transient voltage falls.
By the introduction of the present embodiment, the technical staff belonging to this area can be the first preset value according to actual conditions
Suitable numerical value is set, terminated so that the capacitance module can discharge in a power cycle of the first operating voltage,
Just repeat no more herein.
In the present embodiment, main control module 201 can be specifically MT5505 chips, and charge-discharge modules 202 are specifically as follows
One capacitance module, the capacitance of the capacitance module is specially 47 μ F, refer to Fig. 4, and Fig. 4 is to test reset electricity by oscillograph
The oscillogram on road, external power source are the civilian alternating current of China's standard, and the oscillogram of MT5505 chips is treated as shown in first waveform
The waveform of machine module 204 is as shown in the second waveform, it can be seen that main control module 201 is in the power down of the first moment, standby mould
Block 204 starts power down at the second moment, then reseting module 203 is in low level state, the first moment and second at the second moment
Period between moment is 14.2ms, and less than a power cycle 20ms of civilian alternating current, charge-discharge modules 202 are at one
It can discharge and terminate in power cycle so that reseting module 203 is in low level state at the second moment.
Under normal conditions, the power supply that the electronic equipment such as television set uses is converted by alternating current, such as China
The standard of civilian alternating current is：220V, 50HZ, by the rectification circuit and change-over circuit of inside television, exchange can be said
Electricity is converted to the electric energy that the modules such as the main control module 201, charge-discharge modules 202, reseting module 203 of television set can use.It is logical
Cross the introduction of preceding sections, the technical staff belonging to this area can according to actual conditions, select suitable rectification circuit and
Change-over circuit, so as to meet the needs of actual conditions, just repeat no more herein.
Because of power network fluctuation and caused by transient voltage fall when, for example external communication piezoelectric voltage drops to by 220V moments
During 180V, the voltage that the rectification circuit and change-over circuit of television set provide can also decline therewith and drastically, so that master control
The power down of module 201, and charge-discharge modules 202 have been due to being stored with certain electricity when outside alternating current voltage does not fall,
So now charge-discharge modules 202 are initially located in discharge condition, and start to power to reseting module 203.
In the present embodiment, when the first operating voltage is reduced to 180V by 220V, the power down of main control module 201, then first
Threshold value could be arranged to 180V, in actual applications, according to the difference of main control module 201 and the difference of circuit, first threshold
Can also be other values, by the introduction of the present embodiment, the technical staff belonging to this area can be according to actual conditions, by first
The first threshold of operating voltage sets suitable numerical value, to meet the needs of actual conditions, just repeats no more herein.
3 in step s 2, the second moment after the first moment, at the end of charge-discharge modules discharge, reseting module
Can be the second moment after the first moment specifically in low level state, the charge-discharge modules 202 of television set
Discharged and terminated, at the same reseting module 203 due to without power supply source, so at the second moment, at reseting module 203
Period between low level state, the first moment and the second moment is less than a power cycle of the first operating voltage.
By taking the civilian alternating current in China as an example, a power cycle of civilian alternating current is 1S/50=20ms, as long as discharge and recharge
The capacitance of module 202 is less than the first preset value, it becomes possible to ensures the first moment and the charge-discharge modules of the power down of main control module 201
Period between the second moment that 202 electric discharges terminate is less than a power cycle of civilian alternating current, namely less than 20ms.
Certainly, in actual applications, can be according to actual feelings by the introduction of the present embodiment, those skilled in the art
Condition, other suitable electronic components are selected, to meet the needs of actual conditions, just to be repeated no more herein as charge-discharge modules
.
5 in step s3, the first power supply the first operating voltage be more than or equal to Second Threshold after the second moment it
At the 3rd moment afterwards, when charge-discharge modules are in charging process, triggering reseting module provides first to main control module and resetted
Signal, and then electronic equipment is realized restarting automatically, can be the first work electricity provided in the first power supply specifically
When the voltage recovery of pressure to Second Threshold, main control module 201 is had already powered at the 3rd moment, and charge-discharge modules 202 are opened
Begin to be in charging process, and start to power to reseting module 203, reseting module 203 can be believed by one section of lasting high level
Number, provide the first reset signal to main control module 201 so as to trigger reseting module 203 so that main control module can be according to first
Reseting signal reset, so as to which main control module 201 starts normal work, then television set is caused to realize restarting automatically.
In actual applications, Second Threshold can be that main control module 201 can be according to the first operating voltage normal work
Numerical value, such as, in the present embodiment, Second Threshold can be 220V, in actual applications, according to the difference of main control module 201
And the difference of circuit, Second Threshold can also be other values, by the introduction of the present embodiment, the technical staff belonging to this area
The Second Threshold of the first operating voltage can be set into suitable numerical value according to actual conditions, to meet the needs of actual conditions,
Just repeat no more herein, certainly, by the narration of above-mentioned part, the Second Threshold of the first operating voltage is more than the first threshold
Value.
In a particular application, the electronic equipment such as television set will also include a standby module 204, be arranged on charge-discharge modules
Between 202 and reseting module 202, for providing standby voltage to television set when television set is in holding state.
In order to ensure that television set operationally protects interlock circuit, Fig. 5 is refer to, Fig. 5 is provided in an embodiment of the present invention
The electrifying timing sequence figure of the modules of electronic equipment, as shown in figure 5, standby module 204 needs to be first powered up in the T1 periods, connect
It is that main control module 201 is electric on the T2 periods, but now main control module 201 is only at power-up state, does not have started normal
Work, followed by television set some other modules on the T3 periods electric, such as some I/O interfaces, power amplifier chips etc.
Module, then reseting module 203 carried after the T4 periods change to high level state by low level state to main control module 201
For a reset signal, now main control module 201 performs homing action according to the reset signal, and then main control module 201 is just opened
Beginning normal work, after main control module 201 is performed and resetted, television set just starts normal work.
Fig. 6 is refer to, Fig. 6 is the signal that reseting module 203 provided in an embodiment of the present invention is connected with main control module 201
Figure, as shown in fig. 6, main control module 201 is specially MT5505 chips, MT5505 chips include a power pin VCC to be believed with resetting
Number pin AE8, MT5505 chip is received by power pin VCC receiving voltages, receiving pin AE8 by reset signal is answered
Position signal, so as to perform reset so that television set starts normally to work.
Reseting module 203 is specifically as follows a reset circuit, by the introduction of the present embodiment, the technology people belonging to this area
Member can select suitable reset circuit according to actual conditions, to meet the needs of actual conditions, just repeat no more herein.
As described above, in the present embodiment, because the first moment and the reseting module 203 of the power down of main control module 201 are in
Period between second moment of low level state is less than a power cycle of the first operating voltage, so in the first work
After voltage decline abruptly, reseting module 203 will not be constantly in high level state because of the electric discharge of charge-discharge modules 202, and energy
Low level state is in therewith after enough falling in the first operating voltage moment, is gone up in the first operating voltage to normal voltage
Afterwards, reseting module 204 is in high level state again, so as to provide the first reset signal to main control module 201 so that master control
Module 201 can perform reset according to first reset signal, and start working again, avoid user and go to plug power supply manually
The inconvenience of line, improve the Consumer's Experience of electronic equipment.
Of course, in a particular application, charge-discharge modules 202, namely the capacitance of the capacitance module in the present embodiment need
It is greater than the second preset value so that a default ripple voltage value is less than by the ripple voltage value of reseting module 203.
Because DC stable power supply is usually to be formed by links such as the rectified voltage stabilizings of AC power, can not just keep away
How much some Alternating Components are carried in DC stabilization amount with exempting from, and this AC compounent being superimposed upon in DC stabilization amount is just referred to as
For ripple, ripple can influence work and the life-span of electronic equipment, therefore for the normal operation of the electronic equipments such as television set, charge and discharge
Electric module 202 namely the capacitance of the capacitance module in the present embodiment are, it is necessary to be more than the second preset value so that pass through reseting module
203 ripple voltage value is less than a default ripple voltage value.
Because the actual conditions of all types of electronic equipments are different, the default ripple voltage value corresponding to each electronic equipment
Different, by the introduction of the present embodiment, the technical staff belonging to this area can be according to actual conditions, by the electricity of capacitance module
Capacitance is arranged to suitably be worth, to ensure the normal operation of electronic equipment and life-span, so as to meet the needs of actual conditions, herein
Just repeat no more.
In actual applications, in general, the second preset value is less than the first preset value, and the capacitance of capacitance module can
To control between the second preset value and the first preset value, but it is pre- more than first still to have the second preset value
If the application scenarios of value, in this case, by the introduction of the present embodiment, the technical staff belonging to this area is according to actual feelings
Condition, the capacitance that can select charge-discharge modules is specially to be more than the second preset value or be less than the first preset value, to meet
The demand of actual conditions, is not limited herein.
It is can be seen that by above-mentioned part because the charge-discharge modules in the embodiment of the present invention can be in the first operating voltage
A power cycle in electric discharge terminate, so being reduced to the after first threshold in the first operating voltage that the first power supply provides
One moment, main control module power down, charge-discharge modules are in discharge condition and give reseting module power supply, and the after the first moment
Two moment, charge-discharge modules electric discharge terminate, and the period between the first moment and the second moment is less than the one of the first operating voltage
Individual power cycle, and the 3rd moment after the second moment after the first operating voltage is more than or equal to Second Threshold,
When charge-discharge modules are in charging process, triggering reseting module provides the first reset signal to main control module so that master control mould
Block can be according to the first reseting signal reset, and then electronic equipment is realized restarting automatically, therefore solves prior art
The electronic equipments such as the middle television set technical problem that presence can not restart when transient voltage falls.
Simultaneously as solve in the prior art the electronic equipment such as television set when transient voltage falls exist can not be again
The technical problem of startup, so not needing user to plug the power lines of the electronic equipments such as television set again to restart television set manually
, then improve the Consumer's Experiences of the electronic equipments such as television set.
Based on same inventive concept, the embodiment of the present invention also provides a kind of electronic equipment, refer to Fig. 7, and Fig. 7 is the present invention
The functional block diagram for the electronic equipment that embodiment provides, the electronic equipment include：Casing 701；Electric supply installation 702；Reset circuit
703, it is connected with electric supply installation 702.
The reset circuit in electronic equipment and previous embodiment, repositioning method in the embodiment of the present invention are to be based on same hair
Two aspects under bright design, are above doing detailed description to the implementation process of reset circuit, repositioning method, so
Technical staff belonging to this area can be according to the electronic equipment described above being well understood in the present embodiment structure and implementation
Process, it is succinct for specification, just repeat no more herein.
Technical scheme in the embodiments of the present invention, at least has the following technical effect that or advantage：
1st, because the charge-discharge modules in the embodiment of the present invention can be put in a power cycle of the first operating voltage
Electricity terminates, so the first moment after the first operating voltage that the first power supply provides is reduced to first threshold, main control module fall
Electricity, charge-discharge modules are in discharge condition and powered to reseting module, the second moment after the first moment, charge-discharge modules
Electric discharge terminates, the period between the first moment and the second moment be less than the first operating voltage a power cycle, and
At the 3rd moment after the second moment that first operating voltage is more than or equal to after Second Threshold, charging is in charge-discharge modules
During when, triggering reseting module to main control module provide the first reset signal so that main control module can according to first reset
Signal resets, and then electronic equipment is realized restarting automatically, therefore solves the electronic equipment such as television set in the prior art
The technical problem that presence can not restart when transient voltage falls.
2nd, exist when transient voltage falls and can not open again due to solving the electronic equipment such as television set in the prior art
Dynamic technical problem, so not needing user to plug the power lines of the electronic equipments such as television set again to restart television set manually
, then improve the Consumer's Experiences of the electronic equipments such as television set.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (7)
1. a kind of reset circuit, applied in an electronic equipment, it is characterised in that the reset circuit includes：
Main control module, powered from the first power supply；
Charge-discharge modules, powered from first power supply；
Reseting module, it is connected respectively with the main control module and the charge-discharge modules；
Wherein, the first moment after the first operating voltage that first power supply provides is reduced to first threshold, the master control
Module power down, the charge-discharge modules are in discharge condition and powered to the reseting module；After first moment
Second moment, the charge-discharge modules electric discharge terminate, and the period between first moment and second moment is less than institute
State a power cycle of the first operating voltage；First operating voltage be more than or equal to Second Threshold after described second
At the 3rd moment after moment, when the charge-discharge modules are in charging process, the reseting module is triggered to the master
Control module provide the first reset signal so that the main control module can according to first reseting signal reset, wherein, it is described
Second Threshold is more than the first threshold, and the charge-discharge modules are specially a capacitance module, the capacitance of the capacitance module
Less than the first preset value so that the capacitance module can discharge in one power cycle to be terminated.
2. reset circuit as claimed in claim 1, it is characterised in that the main control module is specially a main control chip, described
Main control chip includes a reset signal and receives pin, and the reseting module receives pin with the reset signal and is connected.
3. reset circuit as claimed in claim 1, it is characterised in that it is default that the capacitance of the capacitance module is more than second
Value so that a default ripple voltage value is less than by the ripple voltage value of the reseting module.
4. a kind of electronic equipment, it is characterised in that including：
Casing；
Electric supply installation, it is arranged in the casing；
Reset circuit as described in any claims of claim 1-3, is arranged in the casing, is connected with the electric supply installation.
5. a kind of repositioning method, applied to an electronic equipment, it is characterised in that the electronic equipment includes a reset circuit, institute
Stating reset circuit includes main control module, charge-discharge modules and reseting module, and the main control module is powered from the first power supply, institute
Charge-discharge modules are stated to be powered from first power supply, the reseting module respectively with the main control module and the discharge and recharge
Module connects, and methods described includes：
The first moment after the first operating voltage that first power supply provides is reduced to first threshold, the main control module fall
Electricity, the charge-discharge modules are in discharge condition and discharged to the reseting module；
The second moment after first moment, charge-discharge modules electric discharge terminate, first moment and described the
Period between two moment is less than a power cycle of first operating voltage；
The 3rd moment after second moment after first operating voltage is more than or equal to Second Threshold, described
When charge-discharge modules are in charging process, trigger the reseting module and provide the first reset signal to the main control module, make
The main control module can according to first reseting signal reset, wherein, the Second Threshold is more than the first threshold,
The charge-discharge modules are specially a capacitance module, and the capacitance of the capacitance module is less than the first preset value so that the electricity
Molar block can discharge in one power cycle to be terminated.
6. method as claimed in claim 5, it is characterised in that the main control module is specially a main control chip, the master control
Chip includes a reset signal and receives pin, and the reseting module receives pin with the reset signal and is connected.
7. method as claimed in claim 5, it is characterised in that the capacitance of the capacitance module is more than the second preset value, makes
A default ripple voltage value must be less than by the ripple voltage value of the reseting module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310061842.3A CN104007800B (en) | 2013-02-27 | 2013-02-27 | A kind of reset circuit, electronic equipment and repositioning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310061842.3A CN104007800B (en) | 2013-02-27 | 2013-02-27 | A kind of reset circuit, electronic equipment and repositioning method |
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| Publication Number | Publication Date |
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| CN104007800A CN104007800A (en) | 2014-08-27 |
| CN104007800B true CN104007800B (en) | 2018-02-27 |
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| CN201310061842.3A Active CN104007800B (en) | 2013-02-27 | 2013-02-27 | A kind of reset circuit, electronic equipment and repositioning method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807885B (en) * | 2014-12-31 | 2021-09-28 | 施耐德电气工业公司 | Power failure protection method and device |
| CN107426617B (en) * | 2017-01-26 | 2020-03-06 | 青岛海信电器股份有限公司 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN107341075B (en) * | 2017-08-28 | 2023-12-15 | 北京世通凌讯科技有限公司 | Power-down protection device and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170891Y (en) * | 2008-02-13 | 2008-12-24 | 四川长虹电器股份有限公司 | Low level reset control circuit |
| CN201298160Y (en) * | 2008-08-11 | 2009-08-26 | 比亚迪股份有限公司 | Reset circuit for singlechip |
| CN201956990U (en) * | 2011-01-26 | 2011-08-31 | 深圳市同洲电子股份有限公司 | Low-level reset circuit and digital television receiving terminal |
| CN202142000U (en) * | 2011-06-02 | 2012-02-08 | 深圳创维数字技术股份有限公司 | Reset circuit and electronic device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602006002886D1 (en) * | 2006-07-28 | 2008-11-06 | Hynix Semiconductor Inc | Operational reset circuit for a digital device with on-chip voltage-down converter |
-
2013
- 2013-02-27 CN CN201310061842.3A patent/CN104007800B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170891Y (en) * | 2008-02-13 | 2008-12-24 | 四川长虹电器股份有限公司 | Low level reset control circuit |
| CN201298160Y (en) * | 2008-08-11 | 2009-08-26 | 比亚迪股份有限公司 | Reset circuit for singlechip |
| CN201956990U (en) * | 2011-01-26 | 2011-08-31 | 深圳市同洲电子股份有限公司 | Low-level reset circuit and digital television receiving terminal |
| CN202142000U (en) * | 2011-06-02 | 2012-02-08 | 深圳创维数字技术股份有限公司 | Reset circuit and electronic device |
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| CN104007800A (en) | 2014-08-27 |
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