CN107846208A - Stabilization reset circuit - Google Patents
Stabilization reset circuit Download PDFInfo
- Publication number
- CN107846208A CN107846208A CN201710915152.8A CN201710915152A CN107846208A CN 107846208 A CN107846208 A CN 107846208A CN 201710915152 A CN201710915152 A CN 201710915152A CN 107846208 A CN107846208 A CN 107846208A
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- CN
- China
- Prior art keywords
- circuit
- differential
- voltage
- stabilization
- resistor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
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- Electronic Switches (AREA)
Abstract
The invention discloses a kind of stabilization reset circuit, including differential circuit, on-off circuit and integrating circuit；Wherein, differential circuit is used to carry out differential calculation to the input voltage of voltage input end to produce a differential voltage, and differential voltage is exported to on-off circuit；On-off circuit is used to turn on when the magnitude of voltage of differential voltage is more than a threshold value, and for being turned off when the magnitude of voltage of the differential voltage is zero, while produce a cut-off signals；Integrating circuit is used to control reseting network signal end output low level when on-off circuit turns on, and for controlling reseting network signal end to rise to high level by low level when on-off circuit turns off.The present invention can solve the problem that the interface of electronic equipment because level is unstable and the problem of shake.
Description
Technical field
The present invention relates to electronic circuit technology field, more particularly to a kind of stabilization reset circuit.
Background technology
With the rapid development of electronic communication technology, electronic equipment, such as home-use intelligent control panel obtain extensively
Using intelligent control panel is a collection light household electrical appliances controlled in wireless, scenery control, remote household electrical appliance control, background music broadcasting
Etc. the sub-control equipment of function.
In actual use, this class of electronic devices often occurs needing to switch several times, the phenomenon of ability startup power supply.
This be due to electronic equipment when power supply is just opened, interface (such as USB interface) can produce remaining electricity because of multiple plug
So as to cause level unstable, produce jitter phenomenon, cause power supply not start, if shake it is excessively serious, can also make system without
Method starts, and ultimately results in electronic equipment and cannot be started up.
The content of the invention
Therefore, it is an object of the invention to propose a kind of stabilization reset circuit, solves the interface of electronic equipment because of electricity
It is flat unstable and the problem of shake.
A kind of stabilization reset circuit, including differential circuit, on-off circuit and integrating circuit；
One end of the differential circuit is connected with voltage input end, and the other end is connected with the on-off circuit, the differential
Circuit is used to carry out differential calculation to the input voltage of the voltage input end to produce a differential voltage, and the differential is electric
Pressure is exported to the on-off circuit；
One end of the on-off circuit is connected with the differential circuit, and the other end is connected with the integrating circuit, described to open
Powered-down road is used to turn on when the magnitude of voltage of the differential voltage is more than a threshold value, makes the differential circuit and the integrating circuit
Conducting connection, and for being turned off when the magnitude of voltage of the differential voltage is zero, make the differential circuit and the integration electricity
Road disconnects；
One end of the integrating circuit is connected with the voltage input end respectively, and the other end connects with the on-off circuit respectively
Connect and connected with a reseting network signal end, the integrating circuit is used for when the on-off circuit turns on, and controls the reset net
Network signal end exports low level, and for controlling the reseting network signal end when the on-off circuit turns off by low level
Rise to high level.
According to stabilization reset circuit provided by the invention, when implementing, the stabilization reset circuit is arranged on electronics
The interface of equipment, because interface can produce remaining electricity because repeatedly plugging, the level of voltage input end is caused to be shaken,
And in the circuit, with the rising of the voltage of voltage input end, differential circuit can be carried out to the input voltage of voltage input end
Integral and calculating produces a differential voltage, when differential voltage is more than a threshold value, on-off circuit conducting, and the output of reseting network signal end
Low level, low level time are determined by the time constant of differential circuit；After the voltage stabilization of voltage input end, differential electricity
Road no longer changes, and now, the magnitude of voltage of differential voltage is zero, and on-off circuit shut-off, integrating circuit is by reseting network signal
End rises to high level by low level, by above-mentioned processing procedure, can ensure when the level of voltage input end is shaken, multiple
Position network signal end has sufficient time to reset (generally having 1~2s), shakes most severe a period of time so as to miss, produces
Stable reset signal, so as to which the interface for effectively solving the problems, such as electronic equipment is shaken because level is unstable, avoid
Circuit can not start.In addition, the stabilization reset circuit, simple in construction, various electronic can be applied to, it is practical.
In addition, stabilization reset circuit according to the above embodiment of the present invention, can also have technology additional as follows special
Sign：
Further, in one embodiment of the invention, the differential circuit includes being sequentially connected in series the first electric capacity, the
One resistance and second resistance, the first end of first electric capacity are connected with the voltage input end, and the second of first electric capacity
End is connected with the first resistor, and the first end of the second resistance is connected with the first resistor, and the of the second resistance
Two ends are grounded.
Because differential circuit is only made up of the first electric capacity, first resistor and second resistance, therefore simple in construction, cost of implementation
It is low.
Further, in one embodiment of the invention, the integrating circuit includes the 3rd resistor and second of series connection
Electric capacity, the first end of the 3rd resistor are connected with the voltage input end, the second end of the 3rd resistor and described second
The first end connection of electric capacity, the second end ground connection of second electric capacity, the reseting network signal end are located at the 3rd resistor
Between second electric capacity.
Integrating circuit is only made up of 3rd resistor and the second electric capacity, equally with the advantages of simple in construction, cost is low.
Further, in one embodiment of the invention, the on-off circuit uses triode.
Further, in one embodiment of the invention, the on-off circuit uses NPN type triode.
Further, in one embodiment of the invention, the base stage of the triode be connected to the first resistor and
Between second resistance, the colelctor electrode of the triode is connected between the 3rd resistor and second electric capacity, three pole
The grounded emitter of pipe.
On-off circuit uses triode, has cost advantage, and effect is higher.
Further, in one embodiment of the invention, the stabilization reset circuit also includes anti-static component, institute
Anti-static component is stated to be connected with the reseting network signal end.
Further, in one embodiment of the invention, the anti-static component uses piezo-resistance, the pressure-sensitive electricity
One end of resistance is connected with the reseting network signal end, other end ground connection.
Anti-static component is included by setting, the interference for being connected to the reset signal of chip from ESD can be effectively protected.
Further, in one embodiment of the invention, the stabilization reset circuit also includes manual reset switch,
The manual reset switch is connected with the reseting network signal end.
By setting manual reset switch, remedial measure is added, further improves stability.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of stabilization reset circuit according to an embodiment of the invention；
Fig. 2 is the physical circuit schematic diagram of stabilization reset circuit according to an embodiment of the invention；
Fig. 3 is the reset signal curve map of stabilization reset circuit according to an embodiment of the invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Some embodiments of the present invention are given in accompanying drawing.But the present invention can be with perhaps
More different form is realized, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is to make
To the disclosure more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", " on ", " under " and similar statement is for illustrative purposes only, rather than instruction or the device or member that imply meaning
Part must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.Term as used herein " and/or " include the arbitrary of one or more related Listed Items and
All combinations.
Electronic equipment when in use, electronic equipment interface sometimes because multiple plug can produce remaining electricity, draw
It is unstable to play level, produces jitter phenomenon, causes power supply not start, if shake is excessively serious, also system can be made not start,
Electronic equipment is ultimately resulted in cannot be started up.In order to solve the problem, the present embodiment, which provides one kind and is arranged on electronic equipment interfaces, to be gone out
Stabilization reset circuit.Referring to Fig. 1, the stabilization reset circuit that one embodiment of the invention provides, for convenience of description, only
The part related to the embodiment of the present invention is shown.
The stabilization reset circuit, including differential circuit 10, on-off circuit 20 and integrating circuit 30；
One end of the differential circuit 10 is connected with voltage input end 40, and the other end is connected with the on-off circuit 20, institute
Differential circuit 10 is stated to be used to carry out differential calculation to the input voltage of the voltage input end 40 to produce a differential voltage, and will
The differential voltage is exported to the on-off circuit 20；
One end of the on-off circuit 20 is connected with the differential circuit 10, and the other end is connected with the integrating circuit 30,
The on-off circuit 20 is used to turn on when the magnitude of voltage of the differential voltage is more than a threshold value, makes the differential circuit 10 and institute
The conducting connection of integrating circuit 30 is stated, and for being turned off when the magnitude of voltage of the differential voltage is zero, makes the differential circuit
10 disconnect with the integrating circuit 30；
One end of the integrating circuit 30 is connected with the voltage input end 40 respectively, and the other end is electric with the switch respectively
Road 20 connects and a reseting network signal end 50 connects, and the integrating circuit 30 is used for when the on-off circuit 20 turns on, control
Make the reseting network signal end 50 and export low level, and for controlling the reset net when the on-off circuit 20 turns off
Network signal end 50 rises to high level by low level.
The stabilization reset circuit proposed according to the present embodiment, in the specific implementation, the stabilization reset circuit is set
In the interface of electronic equipment, because interface can produce remaining electricity because repeatedly plugging, the level of voltage input end is caused to go out
Now shake, and in the circuit, with the rising of the voltage of voltage input end 40, differential circuit 10 can be to voltage input end 40
Input voltage carries out integral and calculating and produces a differential voltage, and when differential voltage is more than a threshold value, on-off circuit 20 turns on, and resets
Network signal end 50 exports low level, and the low level time is determined by the time constant of differential circuit 10；Work as voltage input end
After 40 voltage stabilization, differential circuit 10 no longer changes, and now, the magnitude of voltage of differential voltage is zero, and on-off circuit 20 closes
Disconnected, reseting network signal end 50 is risen to high level by integrating circuit 30 by low level, by above-mentioned processing procedure, can be ensured
When the level of voltage input end 40 is shaken, reseting network signal end 50 has sufficient time to reset (generally having 1~2s),
Stable reset signal is produced, most severe a period of time is shaken so as to miss, produces stable reset signal, so as to effectively solve
Certainly the interface of electronic equipment because level is unstable and the problem of shake, avoid circuit from not starting.In addition, the stabilization
Reset circuit, it is simple in construction, various electronic can be applied to, it is practical.
Further, referring to Fig. 2, as a specific example, the differential circuit 10 can include what is be sequentially connected in series
First electric capacity 101, first resistor 102 and second resistance 103, first end and the voltage input end of first electric capacity 101
40 connections, the second end of first electric capacity 101 is connected with the first resistor 102, the first end of the second resistance 103 and
The first resistor 102 connects, the second end ground connection of the second resistance 103.Because differential circuit 10 is only by the first electric capacity
101st, first resistor 102 and second resistance 103 form, therefore simple in construction, and cost of implementation is low.
The integrating circuit 30 can include the electric capacity 302 of 3rd resistor 301 and second of series connection, the 3rd resistor 301
First end be connected with the voltage input end 40, the first of the second end of the 3rd resistor 301 and second electric capacity 302
End connection, the second end ground connection of second electric capacity 302, the reseting network signal end 50 are located at the He of 3rd resistor 301
Between second electric capacity 302.Integrating circuit 30 is only made up of the electric capacity 302 of 3rd resistor 301 and second, equally has structure letter
Singly, the advantages of cost is low.
The on-off circuit 20 can use triode, for example with the triode 201 of NPN type, the triode 201
Base stage is connected between the first resistor 102 and second resistance 103, and the colelctor electrode of the triode 201 is connected to described
Between three resistance 301 and second electric capacity 302, the grounded emitter of the triode 201.On-off circuit 20 uses three poles
Pipe, has cost advantage, and effect is higher.
Describe the operation principle of the stabilization reset circuit in detail with an example below, such as voltage input end 40 is (i.e.
VCC_IO in Fig. 2) during 3.3V is risen to from 0V, the first electric capacity 101 and first resistor 102 in differential circuit 10 produce
The change curve of a raw voltage, the curve of this voltage change produces a differential voltage together with second resistance 103, in differential
When the middle magnitude of voltage of voltage is more than 0.6V, 2 pin of triode 201 will be caused to be turned on 3 pin, now reseting network signal end 50
(i.e. RESET in Fig. 2) is low level, and this low level time is determined by the time constant of differential circuit 10, works as VCC-
After IO level equalizations, because not changing, the differential voltage between first resistor 102 and second resistance 103 is differential circuit 10
Zero, 2 pin and 3 pin of triode 201 are not turned on (i.e. triode 201 is off state), by the electric capacity of 3rd resistor 301 and second
The integrating circuit 30 of 302 compositions causes reseting network signal end 50 to be slowly increased to VCC-IO level (i.e. by low level from 0V
Rise to high level), specific level change curve is referring also to Fig. 3, it should be pointed out that in Fig. 3, t1 corresponds to low level time
Section, it is as caused by differential circuit 10 and on-off circuit 20, and the voltage curve of this sections of t2 is as caused by integrating circuit 30.Should
Stabilization reset circuit ensures that RESET signal has sufficient time to reset in VCC_IO level because when shaking, and produces stable
Reset signal.
In one embodiment, the stabilization reset circuit can also include anti-static component 60, the antistatic
Element 60 is connected with the reseting network signal end 50.The anti-static component 60 is described pressure-sensitive for example with piezo-resistance 601
One end of resistance 601 connects 50 with the reseting network signal end and connect, other end ground connection.Anti-static component 60, energy are included by setting
Enough it is effectively protected the interference for being connected to the reset signal of chip from ESD.
In one embodiment, the stabilization reset circuit can also include manual reset switch 70, described manual
Reset switch 70 is connected with the reseting network signal end 50, by setting manual reset switch 70 to be easy to manually reflex
Position, adds remedial measure, further improves stability.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of stabilization reset circuit, it is characterised in that including differential circuit, on-off circuit and integrating circuit；
One end of the differential circuit is connected with voltage input end, and the other end is connected with the on-off circuit, the differential circuit
For carrying out differential calculation to the input voltage of the voltage input end to produce a differential voltage, and the differential voltage is defeated
Go out to the on-off circuit；
One end of the on-off circuit is connected with the differential circuit, and the other end is connected with the integrating circuit, the switch electricity
Road is used to turn on when the magnitude of voltage of the differential voltage is more than a threshold value, the differential circuit is turned on the integrating circuit
Connection, and for being turned off when the magnitude of voltage of the differential voltage is zero, the differential circuit is broken with the integrating circuit
Open connection；
One end of the integrating circuit is connected with the voltage input end respectively, the other end be connected respectively with the on-off circuit and
One reseting network signal end connects, and the integrating circuit is used for when the on-off circuit turns on, and controls the reseting network to believe
Number end output low level, and for controlling the reseting network signal end to be risen to by low level when the on-off circuit turns off
High level.
2. stabilization reset circuit according to claim 1, it is characterised in that the differential circuit includes what is be sequentially connected in series
First electric capacity, first resistor and second resistance, the first end of first electric capacity are connected with the voltage input end, and described first
Second end of electric capacity is connected with the first resistor, and the first end of the second resistance is connected with the first resistor, and described
The second end ground connection of two resistance.
3. stabilization reset circuit according to claim 2, it is characterised in that the integrating circuit includes the 3rd of series connection
Resistance and the second electric capacity, the first end of the 3rd resistor are connected with the voltage input end, the second end of the 3rd resistor
It is connected with the first end of second electric capacity, the second end ground connection of second electric capacity, the reseting network signal end is located at institute
State between 3rd resistor and second electric capacity.
4. stabilization reset circuit according to claim 3, it is characterised in that the on-off circuit uses triode.
5. stabilization reset circuit according to claim 4, it is characterised in that the on-off circuit uses the pole of NPN type three
Pipe.
6. stabilization reset circuit according to claim 4, it is characterised in that the base stage of the triode is connected to described
Between first resistor and second resistance, the colelctor electrode of the triode be connected to the 3rd resistor and second electric capacity it
Between, the grounded emitter of the triode.
7. the stabilization reset circuit according to claim 1 to 6 any one, it is characterised in that the stabilization resets
Circuit also includes anti-static component, and the anti-static component is connected with the reseting network signal end.
8. stabilization reset circuit according to claim 7, it is characterised in that the anti-static component uses pressure-sensitive electricity
Resistance, one end of the piezo-resistance are connected with the reseting network signal end, other end ground connection.
9. stabilization reset circuit according to claim 7, it is characterised in that the stabilization reset circuit also includes hand
Dynamic reset switch, the manual reset switch are connected with the reseting network signal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915152.8A CN107846208A (en) | 2017-09-30 | 2017-09-30 | Stabilization reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915152.8A CN107846208A (en) | 2017-09-30 | 2017-09-30 | Stabilization reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107846208A true CN107846208A (en) | 2018-03-27 |
Family
ID=61661569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710915152.8A Pending CN107846208A (en) | 2017-09-30 | 2017-09-30 | Stabilization reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107846208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113467591A (en) * | 2021-07-08 | 2021-10-01 | 南昌华勤电子科技有限公司 | Composite signal reset circuit, method and server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489305A (en) * | 2002-10-11 | 2004-04-14 | 华为技术有限公司 | Monitoring circuit |
| JP2007209135A (en) * | 2006-02-02 | 2007-08-16 | Ricoh Co Ltd | Current mode control dc-dc converter |
| CN201965531U (en) * | 2010-12-31 | 2011-09-07 | 天津中启创科技有限公司 | Reset circuit |
| CN204101857U (en) * | 2014-07-08 | 2015-01-14 | 万昌隆电子科技（深圳）有限公司 | A kind of electrostatic prevention LCD liquid crystal display module |
| CN106230665A (en) * | 2016-09-09 | 2016-12-14 | 深圳市艾特智能科技有限公司 | Debugger |
-
2017
- 2017-09-30 CN CN201710915152.8A patent/CN107846208A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489305A (en) * | 2002-10-11 | 2004-04-14 | 华为技术有限公司 | Monitoring circuit |
| JP2007209135A (en) * | 2006-02-02 | 2007-08-16 | Ricoh Co Ltd | Current mode control dc-dc converter |
| CN201965531U (en) * | 2010-12-31 | 2011-09-07 | 天津中启创科技有限公司 | Reset circuit |
| CN204101857U (en) * | 2014-07-08 | 2015-01-14 | 万昌隆电子科技（深圳）有限公司 | A kind of electrostatic prevention LCD liquid crystal display module |
| CN106230665A (en) * | 2016-09-09 | 2016-12-14 | 深圳市艾特智能科技有限公司 | Debugger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113467591A (en) * | 2021-07-08 | 2021-10-01 | 南昌华勤电子科技有限公司 | Composite signal reset circuit, method and server |
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Application publication date: 20180327 |
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