CN204230872U - Switching tube fault treating apparatus - Google Patents
Switching tube fault treating apparatus Download PDFInfo
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- CN204230872U CN204230872U CN201420579543.9U CN201420579543U CN204230872U CN 204230872 U CN204230872 U CN 204230872U CN 201420579543 U CN201420579543 U CN 201420579543U CN 204230872 U CN204230872 U CN 204230872U
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Abstract
The utility model discloses a kind of switching tube fault treating apparatus, comprising: driver module, for driving switch pipe; Monitoring modular, for operating voltage and/or the operating current of monitoring switch pipe; Lock protection module, lock protection module is connected with driver module with monitoring modular, and lock protection module is used for generating lock guard signal according to the operating voltage of switching tube and/or operating current, and wherein, lock guard signal is used for making driver module stop driving switch pipe; Wake module, wake module is connected with lock protection module, for controlling lock protection module wake-up switch pipe; Control module, control module, driver module are connected with wake module with lock protection module, and control module is used for according to lock guard signal by wake module wake-up switch pipe.Thus can process rapidly when fault occurs, make switching tube not fragile, and when control module judges fault-free, can possess and restart switching tube, substantially increase antijamming capability, improve reliability.
Description
Technical field
The utility model relates to electric and electronic technical field, particularly a kind of switching tube fault treating apparatus.
Background technology
Switching tube device uses the most general a kind of Switching Power Supply at present.The switching frequency of switching tube is higher, is generally a few KHz to KHz up to a hundred, is greater than the higher frequency of hundred KHz even in addition.After switching tube breaks down, switching tube there will be larger voltage or current stress, after voltage or current stress exceed the tolerance range of switching tube, just there will be switching tube and damage.And product switching frequency is faster, the electric current in product and voltage changing rate are also just also fast, and the speed that fault occurs accelerates immediately.
In correlation technique, the fault by software or hardware approach switch tube carries out processing to realize overcurrent protection, but, the shortcoming that said method exists is: for software approach, occur in fault, the method processing speed is relatively slow, is easy to cause damage of product; For hardware approach, product can be made to be in pulsation unstable working state all the time, to be also easy to cause damage of product.Therefore, there are the needs improved.
Utility model content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, the purpose of this utility model is to propose a kind of switching tube fault treating apparatus, can process rapidly when fault occurs, and makes switching tube not fragile.
According to the switching tube fault treating apparatus that the utility model proposes, comprising: driver module, for driving switch pipe; Monitoring modular, for monitoring operating voltage and/or the operating current of described switching tube; Lock protection module, described lock protection module is connected with described driver module with described monitoring modular, described lock protection module is used for generating lock guard signal according to the operating voltage of described switching tube and/or operating current, wherein, described lock guard signal is used for making described driver module stop driving described switching tube; Wake module, described wake module is connected with described lock protection module, wakes described switching tube up for controlling described lock protection module; Control module, described control module is connected with described wake module with described lock protection module, described driver module, and described control module is used for waking described switching tube according to described lock guard signal up by described wake module.
According to switching tube fault treating apparatus of the present utility model; when locking protection module and generating lock guard signal according to the operating voltage of switching tube and/or operating current; driver module stops driving switch pipe according to lock guard signal; thus can process rapidly when fault occurs, make switching tube not fragile.Afterwards, control module, when judging fault-free, according to lock guard signal by wake module wake-up switch pipe, thus makes this device possess to restart function, substantially increase antijamming capability, improve reliability.
Accompanying drawing explanation
Fig. 1 is the operation principle schematic diagram of the software processing method of correlation technique breaker in middle pipe fault;
Fig. 2 is the operation principle schematic diagram of the software processing method of correlation technique breaker in middle pipe fault;
Fig. 3 is the block diagram of the switching tube fault treating apparatus according to the utility model embodiment; And
Fig. 4 is the circuit theory schematic diagram of the switching tube fault treating apparatus according to the utility model embodiment.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Simply introduce software processing method and the hardware processing method of the switching tube fault in correlation technique below first.
Wherein, software processing method refers to by the operating voltage on software monitors switching tube and/or operating current, after monitoring abnormal electric current and voltage stress, stops driving switch pipe.Particularly; as shown in Figure 1; by the voltage on monitoring modular 1 ' monitoring switch pipe Ka ' or electric current; control module 3 ' judges to control whether to occur according to the voltage on switching tube Ka ' or electric current; if fault occurs; control module 3 ' controls driver module 2 ' and stops driving switch pipe Ka ', thus realizes switching tube protection.But its shortcoming existed is that occur in fault, processing speed is relatively slow, is easy to cause damage of product.
Hardware processing method refers to by the operating voltage on hardware monitoring current monitoring switch pipe and/or operating current, after monitoring abnormal electric current and voltage stress, stops driving switch pipe.Particularly, as shown in Figure 2, by the voltage on monitoring modular 1 ' monitoring switch pipe Ka ' or electric current; if fault occurs; monitoring modular 1 ' outputs signal to driver module 2 ', and driver module 2 ' stops driving switch pipe Ka ', thus realizes switching tube protection.But its shortcoming existed switching tube can be made to be in pulsation unstable working state all the time, is also easy to cause damage of product.
Based on this, the utility model proposes a kind of switching tube fault treating apparatus.
The switching tube fault treating apparatus of the utility model embodiment is described with reference to the accompanying drawings.
Fig. 3 is the block diagram of the switching tube fault treating apparatus according to the utility model embodiment.As shown in Figure 3, this switching tube fault treating apparatus comprises: monitoring modular 1, driver module 2, control module 3, lock protection module 4 and wake module 5.
Wherein, driver module 2 is for driving switch pipe Ka; Monitoring modular 1 is for the operating voltage of monitoring switch pipe Ka and/or operating current; Lock protection module 4 is connected with driver module 2 with monitoring modular 1, and lock protection module 4, for generating lock guard signal according to the operating voltage of switching tube and/or operating current, wherein, is locked guard signal and is used for making driver module 2 stop driving switch pipe Ka; Wake module 5 is connected with lock protection module 4, wakes up state switching tube Ka for controlling to lock protection module 4; Control module 3 is connected with wake module 5 with lock protection module 4, driver module 2, and control module 3 is for passing through wake module 5 wake-up switch pipe Ka according to lock guard signal.
Wherein, it should be noted that, lock guard signal can comprise the first state and the second state, when locking guard signal and being in the first state, driver module 2 can be made to stop driving switch pipe Ka; When locking guard signal and being in the second state, driver module 2 driving switch pipe Ka again can be made.
Specifically, monitoring modular 1 can the operating voltage of monitoring switch pipe Ka and/or operating current, when operating voltage and/or the operating current exception of switching tube Ka, such as, when the voltage of switching tube Ka is greater than predetermined threshold value, monitoring modular 1 such as hardware observation circuit can fast monitored to the operating voltage of this exception and/or operating current to generate abnormal signal, afterwards this abnormal signal is sent to lock protection module 4, lock protection module 4 carries out lock protection, namely lock protection module 4 and send the lock guard signal of the first state fast to driver module 2 according to the operating voltage of this exception and/or operating current, driver module 2 stops driving switch pipe Ka.And, the lock guard signal of the first state is also sent to control module 3 by lock protection module 4, after control module 3 receives the lock guard signal of the first state, system fault diagnosis will be carried out, after judging system failure, control module 3 exports wake-up signal WAKE UP to wake module 5, after wake module 5 receives wake-up signal WAKE UP, lock protection module 4 is unlocked, the lock guard signal that lock protection module 4 exports the second state to driver module 2 with wake-up switch pipe Ka, namely driver module 2 controls according to the lock guard signal of the second state again driving switch pipe Ka.
Thus; the switching tube fault treating apparatus of the utility model embodiment; when locking protection module and generating lock guard signal according to the operating voltage of switching tube and/or operating current; driver module stops driving switch pipe according to lock guard signal; thus can process rapidly when fault occurs, make switching tube not fragile.Afterwards, control module, when judging fault-free, according to lock guard signal by wake module wake-up switch pipe, thus makes this device possess to restart function, substantially increase antijamming capability, improve reliability.
Wherein, according to a specific embodiment of the present utility model, control module 3 can be single-chip microcomputer.
According to an embodiment of the present utility model, as shown in Figure 4, wake module 5 specifically comprises: first input end IN0, the first K switch 1, first resistance R1 and the second resistance R2.
Wherein, first input end IN0 is connected with control module 3, and after control module 3 judges system failure, first input end IN0 can receive wake-up signal WAKE UP; One end of first K switch 1 is connected with power supply VCC, and the other end of the first K switch 1 is the output of wake module 5 and is connected with lock protection module 4; One end of first resistance R1 is connected with first input end IN0, and the other end of the first resistance R1 is connected with the control end of the first K switch 1; One end of second resistance R2 is connected with power supply, and the other end of the second resistance R2 is connected with the control end of the first K switch 1.
Wherein, as shown in Figure 4, the first K switch 1 can be PMOS, and the source electrode of the first K switch 1 is connected with power supply VCC; the drain electrode of the first K switch 1 is the output of wake module 5 and is connected with lock protection module 4, and the grid of the first K switch 1 is connected with the other end of the first resistance R1.
Further, as shown in Figure 4, wake module 5 also comprises: the first diode D1.Wherein, the first diode D1 and the first K switch 1 reverse parallel connection.Namely say, the negative electrode of the first diode D1 is connected with one end of the first K switch 1, and the anode of the first diode D1 is connected with the other end of the first K switch 1.
According to an embodiment of the present utility model, as shown in Figure 4, lock protection module 4 specifically to comprise: the second input IN, second switch K2, the 3rd resistance R3, the 3rd K switch 3 and the 4th resistance R4.
Wherein, the second input IN is connected with monitoring modular 1, and the second input IN is used for operating voltage and/or the operating current of receiving key pipe Ka; One end of second switch K2 is connected with the other end of the first K switch 1, and the other end of second switch K2 is connected with the second input IN, and the control end of second switch K2 is the output OUT of lock protection module 4, and the control end of second switch K2 exports lock guard signal; One end of 3rd resistance R3 is connected with one end of second switch K2, and the other end of the 3rd resistance R3 is connected with the control end of second switch K2; The control end of the 3rd K switch 3 is connected with the second input IN, and one end of the 3rd K switch 3 is connected with the control end of second switch K2, the other end ground connection of the 3rd K switch 3; One end of 4th resistance R4 is connected with the second input IN, the other end ground connection of the 4th resistance R4.
Wherein, as shown in Figure 4, second switch K2 can be PMOS, and the source electrode of second switch K2 is connected with the drain electrode of the first K switch 1, and the drain electrode of second switch K2 is connected with the second input IN, and the grid of second switch K2 exports lock guard signal.3rd K switch 3 can be the source ground of NMOS tube, the 3rd K switch 3, and the drain electrode of the 3rd K switch 3 is connected with the grid of second switch K2, and the grid of the 3rd K switch 3 is connected with the second input IN.
Further, as shown in Figure 4, lock protection module 4 also to comprise: the second diode D2 and the 3rd diode D3.Wherein, the second diode D2 and second switch K2 reverse parallel connection; 3rd diode D3 and the 3rd K switch 3 reverse parallel connection.Namely say, the negative electrode of the second diode D2 is connected with one end of second switch K2, and the anode of the second diode D2 is connected with the other end of second switch K2.The negative electrode of the 3rd diode D3 is connected with one end of the 3rd K switch 3, and the anode of the 3rd diode D3 is connected with the other end of the 3rd K switch 3.
Further, as shown in Figure 4, lock protection module 4 also to comprise: the first electric capacity C1 and the second electric capacity C2.
Wherein, one end of the first electric capacity C1 is connected with one end of second switch K2, and the other end of the first electric capacity C1 is connected with the control end of second switch K2; One end of second electric capacity C2 is connected with the second input IN, the other end ground connection of the second electric capacity C2.Namely say, the first electric capacity C1 and the 3rd resistor coupled in parallel, the second electric capacity C2 and the 4th resistor coupled in parallel.
According to foregoing description, the first resistance R1, the second resistance R2 and the first K switch 1 constitute wake module 5, and the first electric capacity C1, the second electric capacity C2, the 3rd resistance R3, the 4th resistance R4, second switch K2 and the 3rd K switch 3 constitute lock protection module 4.
Thus, according to Fig. 4, when switching tube Ka normally works, control module 3 output low level is to wake module 5, and namely first input end IN0 is low level (GND), and the first K switch 1 is in conducting state.And monitoring modular 1 output low level is to lock protection module 4, and namely the second input IN is also low level (GND), the 3rd K switch 3 and second switch K2 not conductings, the output OUT of lock protection module 4 is high level (VCC).
When switching tube Ka occurs abnormal; monitoring modular 1 exports high level to lock protection module 4; namely the second input IN is high level (VCC); 3rd K switch 3 is triggered conducting; make; the output OUT of lock protection module 4 becomes low level (GND), and switching tube Ka quits work.Simultaneously second switch K2 is triggered conducting, and the voltage of the second input IN point is driven high to VCC.Lock guard signal during fault just maintains by such second switch K2 and the 3rd K switch 3, even if lock guard signal during fault disappears, the output signal of the output OUT of lock protection module 4 keeps low level all always.
When needing to restart switching tube Ka work; first input end IN0 is needed to become high level (VCC); namely say; control module 3 is after judging system failure; high level is exported to wake module 5; first K switch 1 is disconnected, and the lock guard mode of second switch K2 and the 3rd K switch 3 just can be eliminated, and makes OUT export high level.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (7)
1. a switching tube fault treating apparatus, is characterized in that, comprising:
Driver module, for driving switch pipe;
Monitoring modular, for monitoring operating voltage and/or the operating current of described switching tube;
Lock protection module, described lock protection module is connected with described driver module with described monitoring modular, described lock protection module is used for generating lock guard signal according to the operating voltage of described switching tube and/or operating current, wherein, described lock guard signal is used for making described driver module stop driving described switching tube;
Wake module, described wake module is connected with described lock protection module, wakes described switching tube up for controlling described lock protection module; And
Control module, described control module is connected with described wake module with described lock protection module, described driver module, and described control module is used for waking described switching tube according to described lock guard signal up by described wake module.
2. switching tube fault treating apparatus as claimed in claim 1, it is characterized in that, described wake module specifically comprises:
First input end, described first input end is connected with described control module;
First switch, one end of described first switch is connected with power supply, and the other end of described first switch is the output of described wake module and is connected with described lock protection module;
First resistance, one end of described first resistance is connected with described first input end, and the other end of described first resistance is connected with the control end of described first switch;
Second resistance, one end of described second resistance is connected with described power supply, and the other end of described second resistance is connected with the control end of described first switch.
3. switching tube fault treating apparatus as claimed in claim 2, it is characterized in that, described lock protection module specifically comprises:
Second input, described second input is connected with described monitoring modular;
Second switch, one end of described second switch is connected with the other end of described first switch, and the other end of described second switch is connected with described second input, and the control end of described second switch is the output of described lock protection module;
3rd resistance, one end of described 3rd resistance is connected with one end of described second switch, and the other end of described 3rd resistance is connected with the control end of described second switch;
3rd switch, the control end of described 3rd switch is connected with described second input, and one end of described 3rd switch is connected with the control end of described second switch, the other end ground connection of described 3rd switch; And
4th resistance, one end of described 4th resistance is connected with described second input, the other end ground connection of described 4th resistance.
4. switching tube fault treating apparatus as claimed in claim 3, it is characterized in that, described lock protection module also comprises:
First electric capacity, one end of described first electric capacity is connected with one end of described second switch, and the other end of described first electric capacity is connected with the control end of described second switch;
Second electric capacity, one end of described second electric capacity is connected with described second input, the other end ground connection of described second electric capacity.
5. switching tube fault treating apparatus as claimed in claim 2, it is characterized in that, described wake module also comprises:
With the first diode of described first switch reverse parallel connection.
6. switching tube fault treating apparatus as claimed in claim 3, it is characterized in that, described lock protection module also comprises:
With the second diode of described second switch reverse parallel connection;
With the 3rd diode of described 3rd switch reverse parallel connection.
7. switching tube fault treating apparatus as claimed in claim 1, it is characterized in that, described control module is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579543.9U CN204230872U (en) | 2014-09-30 | 2014-09-30 | Switching tube fault treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579543.9U CN204230872U (en) | 2014-09-30 | 2014-09-30 | Switching tube fault treating apparatus |
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| Publication Number | Publication Date |
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| CN204230872U true CN204230872U (en) | 2015-03-25 |
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| CN201420579543.9U Active CN204230872U (en) | 2014-09-30 | 2014-09-30 | Switching tube fault treating apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080445A (en) * | 2016-06-06 | 2016-11-09 | 合肥天地软件科技有限公司 | A kind of bus fail-soft system |
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2014
- 2014-09-30 CN CN201420579543.9U patent/CN204230872U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080445A (en) * | 2016-06-06 | 2016-11-09 | 合肥天地软件科技有限公司 | A kind of bus fail-soft system |
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