CN103713255B - A kind of fault detection method, system and controller - Google Patents
A kind of fault detection method, system and controller Download PDFInfo
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- CN103713255B CN103713255B CN201310683574.9A CN201310683574A CN103713255B CN 103713255 B CN103713255 B CN 103713255B CN 201310683574 A CN201310683574 A CN 201310683574A CN 103713255 B CN103713255 B CN 103713255B
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Abstract
The embodiment of the invention discloses a kind of fault detection method, system and controller.The method comprise the steps that to utilize when electronic equipment is in soft start or operational mode and continue the charger iterative cycles behavioral characteristic after staying diode or capacitance short-circuit to carry out fault detect, and in electronic equipment running, utilize the feature of capacitance voltage and cell voltage to carry out fault detect, different characteristics before and after the present embodiment starts according to electronic equipment have employed different detection schemes, on the basis of not increasing device cost, all can effectively detect under various running statuses, and will not report by mistake, fail to report, and the present embodiment uses detection over-current signal to seal the action of ripple in time, while detection fault, the timely protection to device can be accomplished, and fault coverage will not be expanded, can avoid causing the damage of other adjacent devices, detection is the most effectively.
Description
Technical field
The present invention relates to circuit field, particularly relate to a kind of fault detection method, system and control
Device.
Background technology
At present, Buck conversion circuit BUCK circuit is widely used in the blood pressure lowering change of each direct current inversion of direct current
Carry over closes, and its circuit is simple, and output current ripple is little, applies more in charger.Wherein, big merit
The charger of rate, especially multiple module paralleling run detection to device fault in the scene of CB common battery group
Particularly important, if fault can be accurately positioned and quote, malfunctioning module is cut off rapidly from system, can
To be prevented effectively from the operation affecting whole parallel system.
The continuous detection method staying diode or output capacitance short circuit is by BUCK circuit of the prior art:
By identifying BUCK circuit capacitance voltage die, or BUCK circuit capacitance voltage is low judges whether
There occurs short trouble.The present inventor finds in the research of prior art and practice process,
The detection method of prior art can only quote fault under specific operation, i.e. can only build at output capacitance voltage
After erecting effectively, if but protect during detection improper, it is easy to cause failure propagation, cause week
The damage of peripheral device.If BUCK circuit powers on has occurred that diode or capacitance short-circuit fault before
Time, once charger starts to start, and is equivalent to charger input short, will necessarily touch during switching tube conducting
Send out overcurrent protection and charger is quit work so that charger capacitance voltage cannot be set up, and this just makes
The detection scheme obtaining prior art lost efficacy in the detection.
Summary of the invention
Embodiments provide a kind of fault detection method, system and controller, for standard
Really, the continuous short trouble staying diode or electric capacity in BUCK circuit is detected in time.
First aspect present invention provides a kind of fault detection method, including:
Step one: when electronic equipment is in soft-start mode or operational mode, the first controller is receiving
To second controller send the first over-current signal and in the first preset time, be not received by the second mistake
During stream signal, it is transmitted across flowing reset signal to second controller so that second controller interrupts to the first control
Device processed sends the first over-current signal, and the value of the first enumerator is added 1 by the first controller, wherein, and the first counting
The value of device is currency, and the initial value of the first enumerator is 0, and wherein, the first controller is receiving first
During over-current signal, electronic equipment enters stop mode；
Step 2, after second controller interrupts sending the first over-current signal to the first controller, first control
Device processed controls electronic equipment and enters soft-start mode or operational mode from stop mode；
Step 3: if the value of the first enumerator is more than the first default value in the second preset time, it is determined that
Circuit generation shorted diode or capacitance short-circuit fault.
In the implementation that the first is possible, in operational mode, the first controller is receiving second
During the first over-current signal that controller sends, this fault detection method also includes:
Judge that whether capacitance voltage is less than preset capacitance voltage value, and judge whether supply voltage value is more than
Preset power magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than pre-
Putting supply voltage value, then add 1 by the value of the second enumerator, the value of the second enumerator is currency, the second meter
The initial value of number device is 0；
If the value of the second enumerator is more than the second default value in the 3rd preset time, then decision circuit is sent out
Raw shorted diode or capacitance short-circuit fault.
According to the implementation possible at the first, in the second possible implementation, if capacitance voltage
Not less than preset capacitance voltage value, or circuit voltage value is not more than prewired circuit magnitude of voltage, then count second
Number device asks zero.
According to the implementation that first aspect, implementation that the first is possible or the second are possible,
In three kinds of possible implementations, if receiving the second over-current signal in the first preset time, then judge
Switching tube is short-circuited.
According to the implementation that first aspect, implementation that the first is possible or the second are possible,
In four kinds of possible implementations, it is determined that after circuit generation shorted diode or capacitance short-circuit fault, close
Close electronic equipment, and disconnect output switch.
According to the implementation that first aspect, implementation that the first is possible or the second are possible,
In five kinds of possible implementations, if before step one, electronic equipment is in stop mode, then and first
Controller controls electronic equipment and enters soft-start mode.
Second aspect present invention provides a kind of fault detection method, including:
In operational mode, the first controller receive second controller send the first over-current signal time,
Judge whether capacitance voltage is less than preset capacitance voltage value, and judge that whether supply voltage value is more than preset
Supply voltage value, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than preset electricity
Source magnitude of voltage, then add 1 by the value of the second enumerator, and the value of the second enumerator is currency, the second enumerator
Initial value be 0；
If the value of the second enumerator is more than the second default value in the 3rd preset time, then decision circuit is sent out
Raw shorted diode or capacitance short-circuit fault.
Third aspect present invention provides a kind of controller, including:
First processing unit, for when electronic equipment is in soft-start mode or operational mode, is receiving
To second controller send the first over-current signal and in the first preset time, be not received by the second mistake
During stream signal, it is transmitted across flowing reset signal to second controller so that second controller interrupts transmission first
Over-current signal, adds 1 by the value of the first enumerator, and wherein, the value of the first enumerator is currency, the first meter
The initial value of number device is 0, and wherein, when receiving the first over-current signal, electronic equipment enters stop mode；
Second processing unit, after interrupting sending the first over-current signal when second controller, controls electronics
Equipment enters soft-start mode or operational mode from stop mode；
3rd processing unit, if preset more than first for the value of the first enumerator in the second preset time
Numerical value, it is determined that circuit generation shorted diode or capacitance short-circuit fault.
In the implementation that the first is possible, fourth processing unit, in operational mode, connecing
When receiving the first over-current signal that second controller sends, it is judged that whether capacitance voltage is less than preset electric capacity electricity
Pressure value, and judge whether supply voltage value is more than preset power magnitude of voltage, if capacitance voltage is less than preset
Capacitance voltage value, and supply voltage value is more than preset power magnitude of voltage, then add 1 by the value of the second enumerator,
The value of the second enumerator is currency, and the initial value of the second enumerator is 0；If in the 3rd preset time
The value of two enumerators is more than the second default value, then decision circuit generation shorted diode or capacitance short-circuit event
Barrier.
Fourth aspect present invention provides a kind of controller, including:
Processing unit, in operational mode, crosses stream letter receive second controller transmission first
Number time, it is judged that whether capacitance voltage less than preset capacitance voltage value, and judges that supply voltage value is the biggest
In preset power magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than
Preset power magnitude of voltage, then add 1 by the value of the second enumerator, and the value of the second enumerator is currency, and second
The initial value of enumerator is 0；If the value of the second enumerator is more than the second preset number in the 3rd preset time
Value, then decision circuit generation shorted diode or capacitance short-circuit fault.
The present invention the 5th face provides a kind of detection tester for electronic circuit fault, including:
The first controller provided such as the third aspect or the first controller provided such as fourth aspect, and second
Controller；Wherein, second controller, for sending the first over-current signal to the first controller, and connecing
Interrupted after receiving stream reset signal sending the first over-current signal to the first controller.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
The embodiment of the present invention utilizes when electronic equipment is in soft start or operational mode continuous stay diode or
Charger iterative cycles behavioral characteristic after capacitance short-circuit carries out fault detect, and runs at electronic equipment
During, utilize the feature of capacitance voltage and cell voltage to carry out fault detect, the present embodiment is according to electricity
Different characteristics before and after subset starts have employed different detection schemes, does not increase the basis of device cost
On, all can effectively detect under various running statuses, and will not report by mistake, fail to report, and the present embodiment uses
Detection over-current signal seals the action of ripple in time, while detection fault, can accomplish device
Protection in time, and fault coverage will not be expanded, can avoid causing the damage of other adjacent devices, detection
The most effectively.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some bright embodiments, for those skilled in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of BUCK circuit in the embodiment of the present invention；
Fig. 2 is a flow chart of fault detection method in the embodiment of the present invention；
Fig. 3 is another flow chart of fault detection method in the embodiment of the present invention；
Fig. 4 is the structure chart of detection tester for electronic circuit fault in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those skilled in the art are not making wound
The every other embodiment obtained under the property made work premise, broadly falls into the scope of protection of the invention.
Embodiments provide a kind of fault detection method.The embodiment of the present invention also provides for accordingly
Controller, and detection tester for electronic circuit fault.Describe in detail individually below.Specifically see Fig. 1 extremely
Fig. 4:
Embodiment one
Embodiments provide a kind of fault detection method.For convenience, will be with circuit
The angle of the first controller in detecting system is described.Such as, this first controller can be specifically
Digital signal processor (DSP, Digital Signal Processor).Wherein, this circuit can be a kind of
Buck conversion circuit (BUCK circuit), this BUCK circuit can also include second controller, and this is years old
Two controllers can be specifically CPLD (CPLD, Complex Programmable
Logic Device).This BUCK circuit can be applied on the electronic equipments such as charger.Below will be with this
Circuit is described in detail as a example by applying on charger.
Specifically see the schematic diagram that Fig. 1, Fig. 1 are BUCK circuit.It should be noted that, charge utensil
There is a following Three models: stop mode, soft-start mode and operational mode.Wherein, stop mode and soft
During start-up mode, output is opened T and is not switched on；When entering operational mode, T opens.
A kind of fault detection method that the embodiment of the present invention provides, may comprise steps of:
Step one: when electronic equipment is in soft-start mode or operational mode, the first controller is receiving
To second controller send the first over-current signal and in the first preset time, be not received by the second mistake
During stream signal, it is transmitted across flowing reset signal to second controller so that second controller interrupts to the first control
Device processed sends the first over-current signal, adds 1 by the value of the first enumerator, and wherein, the value of the first enumerator is for working as
Front value, the initial value of the first enumerator is 0, wherein, crosses stream receive the first controller transmission first
During signal, electronic equipment enters stop mode；
Step 2, after second controller interrupts sending the first over-current signal to the first controller, first control
Device processed controls electronic equipment and enters soft-start mode or operational mode from stop mode；
Step 3: if the value of the first enumerator is more than the first default value in the second preset time, it is determined that
Circuit generation shorted diode or capacitance short-circuit fault.
Above-mentioned steps is used can effectively to detect whether charger before activation or occurs in running
Shorted diode or capacitance short-circuit fault.
Further, it is also possible to whether detection charger occurs diode short in running by the following method
Road or capacitance short-circuit fault.Wherein, this detection method can as above-mentioned detection method supplement, permissible
Together charger is detected in conjunction with above-mentioned detection method, can discover whether faster diode
Short circuit or capacitance short-circuit fault, specifically can be such that
When the first controller is when receiving the first over-current signal that second controller sends, it is judged that capacitance voltage
Whether less than preset capacitance voltage value, and judge whether supply voltage value is more than preset power magnitude of voltage,
If capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than preset power magnitude of voltage, then
Adding 1 by the value of the second enumerator, the value of the second enumerator is currency, and the initial value of the second enumerator is 0；
If the value of the second enumerator is more than the second default value in the 3rd preset time, then decision circuit occurs two
Pole tube short circuit or capacitance short-circuit fault.
Two are stayed from the foregoing, it will be observed that the present embodiment utilizes when electronic equipment is in soft start or operational mode to continue
Charger iterative cycles behavioral characteristic after pole pipe or capacitance short-circuit carries out fault detect, and sets at electronics
During received shipment row, utilize the feature of capacitance voltage and cell voltage to carry out fault detect, the present embodiment
Different characteristics before and after starting according to electronic equipment have employed different detection schemes, does not increase device cost
On the basis of, all can effectively detect under various running statuses, and will not report by mistake, fail to report, and this enforcement
Example uses detection over-current signal to seal the action of ripple in time, and while detection fault, it is right to accomplish
The timely protection of device, and fault coverage will not be expanded, can avoid causing the damage of other adjacent devices,
Detection is the most effectively.
Embodiment two
In order to be better understood from such scheme, with concrete application examples, technique scheme is carried out in detail below
Thin description, wherein, this first controller can be specifically digital signal processor (DSP, Digital Signal
Processor).This second controller can be specifically CPLD (CPLD, Complex
Programmable Logic Device), this electronic equipment can be charger.
Refer to Fig. 2, specifically can be such that
101, judge that the operational mode of charger is off pattern, start-up mode or operational mode, if filling
Electrical equipment is in stop mode, then perform step 102, if charger is in start-up mode or operational mode,
Then perform step 103；
If 102 chargers are in stop mode, DSP controls charger and enters soft-start mode, and performs
Step 103；
103, judge whether DSP receives the I1 that CPLD sends；
If receiving, perform step 104.
1031, DSP is when the I1 received, and charger enters stop mode.
It should be appreciated that I1 is the first over-current signal, I2 is the second over-current signal.
104, judge whether receive I2 in the first preset time；
If not receiving I2 in the first preset time, then perform step 105；
If receiving I2 in the first preset time, then perform step 111, judge that switching tube is short-circuited.
Wherein, switching tube can be the switching tube such as audion or field effect transistor.
If 105 do not receive I2, DSP in the first preset time is then transmitted across stream reset letter to CPLD
Number so that CPLD interrupts sending I1 to DSP；
106, the value of the first enumerator is added 1 by DSP；
Wherein, the value of the first enumerator is currency, and the initial value of the first enumerator is 0.
107, after step 105, i.e. set when CPLD interrupts sending I1, DSP control electronics to DSP
Standby from stop mode entrance soft-start mode or operational mode, continue executing with step 103；
108, judge that whether the value of the first enumerator is more than the first default value in the second preset time；
If being more than, then performing step 109, if being not more than, then performing step 110.
If 109 are more than, then decision circuit generation shorted diode or capacitance short-circuit fault, close electronics and set
Standby, and disconnect output switch.
If 110 are not more than, then decision circuit is not shorted diode or capacitance short-circuit fault.
If 111 receive I2 in the first preset time, then judge that switching tube is short-circuited.Wherein, open
Closing pipe can be the switching tube such as audion or field effect transistor.
Embodiment three
By judging that capacitance voltage and supply voltage value come whether decision circuitry occurs diode in the present embodiment
Short circuit or capacitance short-circuit fault, in operational mode, the first controller is receiving second controller transmission
Over-current signal time, following steps can be performed, refer to Fig. 3:
201, judge that whether capacitance voltage is less than preset capacitance voltage value, and whether judge supply voltage value
More than preset power magnitude of voltage；
If capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than preset power magnitude of voltage,
Then perform step 202.If capacitance voltage is not less than preset capacitance voltage value, or circuit voltage value is not more than pre-
Circuits magnitude of voltage, then perform step 206.
If 202 capacitance voltages are less than preset capacitance voltage value, and supply voltage value is more than preset power electricity
Pressure value, then add 1 by the value of enumerator.
Wherein, the value of enumerator is currency, and the initial value of enumerator is 0.
203, judge whether the value at preset time inside counting device is more than default value；
If 204 are more than, then decision circuit generation shorted diode or capacitance short-circuit fault.
If 205 are not more than, then decision circuit is not shorted diode or capacitance short-circuit fault.
If 206 capacitance voltages are not less than preset capacitance voltage value, or circuit voltage value is not more than prewired circuit
Magnitude of voltage, then ask zero by enumerator.
Further, it is also possible in conjunction with the embodiments two and embodiment three come whether decision circuitry occurs shorted diode
Or capacitance short-circuit fault.
For example, it is possible to after step 102, perform step 201, judge that whether capacitance voltage is less than preset
Capacitance voltage value, and judge that whether supply voltage value is more than preset power magnitude of voltage.Two ways is tied
Whether incompatible decision circuitry there is shorted diode or capacitance short-circuit fault, can be with more rapid effective detection
It has whether circuit occurs shorted diode or capacitance short-circuit fault.
Embodiment four
In order to preferably realize such scheme, present embodiments provide a kind of controller, such as, this control
Device can be digital signal processor DSP.Wherein, this circuit can be a kind of BUCK circuit, application
On the electronic equipments such as charger.Hereinafter will be described in detail as a example by this circuit is applied on charger.
The controller that the present embodiment provides specifically can include following processing unit:
First processing unit, for when electronic equipment is in soft-start mode or operational mode, first controls
Device processed is receiving the first over-current signal of second controller transmission and is not connecing in the first preset time
When receiving the second over-current signal, it is transmitted across flowing reset signal to second controller so that in second controller
Breaking and send the first over-current signal to the first controller, the value of the first enumerator is added 1 by the first controller, wherein,
The value of the first enumerator is currency, and the initial value of the first enumerator is 0, wherein, is receiving the first control
During the first over-current signal that device processed sends, electronic equipment enters stop mode；
Second processing unit, for interrupting sending the first over-current signal to the first controller when second controller
After, the first controller controls electronic equipment and enters soft-start mode or operational mode from stop mode；
3rd processing unit, if preset more than first for the value of the first enumerator in the second preset time
Numerical value, it is determined that circuit generation shorted diode or capacitance short-circuit fault.
Additionally, dsp can also include fourth processing unit, whether it is used for detecting charger in running
There is shorted diode or the situation of capacitance short-circuit fault.
Concrete, this fourth processing unit, in operational mode, the first controller is receiving the
During the first over-current signal that two controllers send, it is judged that whether capacitance voltage is less than preset capacitance voltage value,
And judge whether supply voltage value is more than preset power magnitude of voltage, if capacitance voltage is less than preset electric capacity electricity
Pressure value, and supply voltage value is more than preset power magnitude of voltage, then add 1 by the value of the second enumerator, second
The value of enumerator is currency, and the initial value of the second enumerator is 0；If the second meter in the 3rd preset time
The value of number device is more than the second default value, then decision circuit generation shorted diode or capacitance short-circuit fault.
From the foregoing, it will be observed that the embodiment of the present invention utilizes continuous when electronic equipment is in soft start or operational mode
Stay the charger iterative cycles behavioral characteristic after diode or capacitance short-circuit to carry out fault detect, and at electricity
In subset running, utilize the feature of capacitance voltage and cell voltage to carry out fault detect, this reality
Execute the different characteristics before and after example starts according to electronic equipment and have employed different detection schemes, do not increase device
On the basis of cost, all can effectively detect under various running statuses, and will not report by mistake, fail to report, and this
Embodiment uses detection over-current signal to seal the action of ripple in time, while detection fault, can do
To the timely protection to device, and fault coverage will not be expanded, can avoid causing other adjacent devices
Damaging, detection is the most effectively.
Embodiment five
In order to preferably realize such scheme, present embodiments provide a kind of controller, such as, this control
Device can be CPLD (CPLD, Complex Programmable Logic Device).
Wherein, this circuit can be a kind of BUCK circuit, applies on the electronic equipments such as charger.Below will
It is described in detail as a example by this circuit is applied on charger.
The controller that the present embodiment provides specifically can include processing unit, is used in operational mode,
When receiving the first over-current signal that second controller sends, it is judged that whether capacitance voltage is less than preset electric capacity
Magnitude of voltage, and judge whether supply voltage value is more than preset power magnitude of voltage, if capacitance voltage is less than pre-
Put capacitance voltage value, and supply voltage value is more than preset power magnitude of voltage, then by the value of the second enumerator
Adding 1, the value of the second enumerator is currency, and the initial value of the second enumerator is 0；If when the 3rd is preset
The value of interior second enumerator is more than the second default value, then decision circuit generation shorted diode or electric capacity
Short trouble.
Embodiment six
The present embodiment additionally provides a kind of detection tester for electronic circuit fault, can include the first controller and
Second controller.Wherein, the first controller is specifically as follows digital signal processor DSP, and second controls
Implement body can be complex programmable logic device (CPLD), specifically can be found in above-described embodiment, the present embodiment
Repeat no more.Wherein, this circuit can be a kind of BUCK circuit, applies at electronic equipments such as chargers
On.Hereinafter will be described in detail as a example by this circuit is applied on charger.Concrete structure see Fig. 4,
Fig. 4 is a structure chart of detection tester for electronic circuit fault in the present embodiment.
Wherein, DSP controls the operation of charger, and CPLD processes the pulse signal that DSP sends, and root
Determine to open driving pulse that DSP sends or the driving pulse that block DSP sends according to operating mode.CPLD connects
Receiving inductive current over-current signal, this over-current signal divides two gears, the first over-current signal and second to cross stream letter
Number, wherein, the over-current signal I1 in Fig. 4 is the first over-current signal, and over-current signal I2 is the second mistake
Stream signal.Over-current signal I1 persistently counts us, over-current signal I2 and continues 2 switch periods (tens us)
The above time, CPLD detects meeting locking pulse after over-current signal, until DSP sends multiple to CPLD
Position signal.
Detecting step when charger is not opened specifically can be such that
Step one, charger proceed by soft start from stopping, and less output pulse will trigger stream
Signal I1；
Step 2, CPLD receive over-current signal I1, and block the driving pulse of charger, and CPLD incited somebody to action
Stream signal I1 is sent to be charged the DSP that device controls；
Step 3, DSP receive I1 over-current signal, charge closing device, if not receiving stream letter in 2s
Number I2, it is believed that non-Q short circuit；
Step 4, it is transmitted across flowing reset signal to CPLD, and enumerator is accumulated once；
After step 5, CPLD received stream reset signal, release the block to charger output pulse,
Interrupt sending over-current signal I1 to DSP；
Step 6, charger, owing to not receiving over-current signal I1, start the most again to enter soft from stop mode
Start-up mode, i.e. returns and performs step one；
Step 7, by above-mentioned circulation, if within a certain period of time, enumerator is added to n time and (i.e. exists
The number of times that may recur in time T), then it is assumed that short trouble occurs；
Step 8, pinning short trouble, charge closing device, disconnect output switch, be not then turned on, knot
Bundle testing process.
It should be noted that, above-mentioned process fault detection be i.e. by start-cross stream-locking pulse-pass charger-
Number s after reset-start-cross stream-locking pulse ... iterative cycles step come whether decision circuit continues
Stay the short trouble of diode or electric capacity.
Detecting step after charger is opened specifically can be such that
Step one, triggering I1 signal；
Step 2, CPLD receive I1 signal locking pulse, and I1 signal is sent to DSP；
In charger operational mode, step 3, DSP judge that in interruption whether capacitance voltage is less than presetting electricity
Whether hold magnitude of voltage and cell voltage higher than predetermined voltage value；
If the result of step 4 step 3 is judged to, then returns and perform step one,
Step 5, by above-mentioned circulation, if within a certain period of time, it is all yes that the result of step 3 judges,
Then think that short trouble occurs；
Step 6, pinning short trouble, charge closing device, charger cannot be again from open, detection of end stream
Journey.
It should be noted that, if the result of step 3 is judged to no, then carry out other faults or abnormal judgement.
If it should be appreciated that output capacitance is short-circuited in charger running, stream envelope can be triggered
Pulse and shutdown, detection method when can enter before charger is opened.It is to say, after charger is opened
Detection method can as charger open before rapidity supplement, even if do not do charger open after
Whether scheme effectively can occur the continuous short trouble staying diode or electric capacity by detecting circuit.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method
The program that can be by completes to instruct relevant hardware, program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
Above a kind of fault detection method provided by the present invention, system and controller are carried out
Being discussed in detail, principle and the embodiment of the present invention are set forth by specific case used herein,
The explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Meanwhile, right
In those skilled in the art, according to the thought of the embodiment of the present invention, at detailed description of the invention and application model
Placing and all will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (11)
1. a fault detection method, it is characterised in that described method is applied to buck converter electricity
Continuing in the BUCK circuit of road stays the short trouble of diode or electric capacity to detect, and described method includes:
Step one: when electronic equipment is in soft-start mode or operational mode, the first controller is receiving
To second controller send the first over-current signal and in the first preset time, be not received by the second mistake
During stream signal, it is transmitted across flowing reset signal to second controller so that second controller interrupts to the first control
Device processed sends the first over-current signal, and the value of the first enumerator is added 1 by the first controller, wherein, and described first
The value of enumerator is currency, and the initial value of the first enumerator is 0, and wherein, the first controller is receiving
During the first over-current signal, described electronic equipment enters stop mode；
Step 2, after described second controller interrupts sending the first over-current signal to the first controller,
One controller controls described electronic equipment and enters soft-start mode or operational mode from stop mode；
Step 3: if the value of described first enumerator is more than the first default value in the second preset time,
Judge described circuit generation shorted diode or capacitance short-circuit fault.
Method the most according to claim 1, it is characterised in that in operational mode, first controls
Device is when receiving the first over-current signal that second controller sends, and this fault detection method also includes:
Judge that whether capacitance voltage is less than preset capacitance voltage value, and judge whether supply voltage value is more than
Preset power magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than pre-
Putting supply voltage value, then add 1 by the value of the second enumerator, the value of described second enumerator is currency, the
The initial value of two enumerators is 0；
If the value of described second enumerator is more than the second default value in the 3rd preset time, then judge institute
State circuit generation shorted diode or capacitance short-circuit fault.
Method the most according to claim 2, it is characterised in that
If capacitance voltage is not less than preset capacitance voltage value, or circuit voltage value is not more than prewired circuit voltage
Value, then ask zero by the second enumerator.
The most according to the method in any one of claims 1 to 3, it is characterised in that
If receiving the second over-current signal in the first preset time, then judge that switching tube is short-circuited.
The most according to the method in any one of claims 1 to 3, it is characterised in that
After judging described circuit generation shorted diode or capacitance short-circuit fault, close described electronic equipment,
And disconnect output switch.
The most according to the method in any one of claims 1 to 3, it is characterised in that
If before step one, electronic equipment is in stop mode, then the first controller controls described electronics
Equipment enters soft-start mode.
7. a fault detection method, it is characterised in that described method is applied in BUCK circuit
Continuing stays the short trouble of diode or electric capacity to detect, and described method includes:
In operational mode, the first controller, when receiving the over-current signal that second controller sends, is sentenced
Whether disconnected capacitance voltage is less than preset capacitance voltage value, and judges that whether supply voltage value is more than preset electricity
Source magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than preset power
Magnitude of voltage, then add 1 by the value of enumerator, and the value of described enumerator is currency, and the initial value of enumerator is
0；
If the value of described enumerator is more than default value in preset time, then judge that described circuit occurs two
Pole tube short circuit or capacitance short-circuit fault.
8. a controller, it is characterised in that described controller is applied in BUCK circuit continue and stays two poles
The short trouble detection of pipe or electric capacity, described controller includes:
First processing unit, for when electronic equipment is in soft-start mode or operational mode, is receiving
To second controller send the first over-current signal and in the first preset time, be not received by the second mistake
During stream signal, it is transmitted across flowing reset signal to second controller so that second controller interrupts transmission first
Over-current signal, adds 1 by the value of the first enumerator, and wherein, the value of described first enumerator is currency, the
The initial value of one enumerator is 0, and wherein, when receiving the first over-current signal, described electronic equipment enters
Stop mode；
Second processing unit, after interrupting sending the first over-current signal when described second controller, controls
Described electronic equipment enters soft-start mode or operational mode from stop mode；
3rd processing unit, if for the value of described first enumerator in the second preset time more than first
Default value, it is determined that described circuit generation shorted diode or capacitance short-circuit fault.
Controller the most according to claim 8, it is characterised in that also include:
Fourth processing unit, in operational mode, is receiving the first mistake that second controller sends
During stream signal, it is judged that whether capacitance voltage is less than preset capacitance voltage value, and judges that supply voltage value is
No more than preset power magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value
More than preset power magnitude of voltage, then adding 1 by the value of the second enumerator, the value of described second enumerator is current
Value, the initial value of the second enumerator is 0；If the value of described second enumerator is more than in the 3rd preset time
Second default value, then judge described circuit generation shorted diode or capacitance short-circuit fault.
10. a controller, it is characterised in that described controller is applied in BUCK circuit continue and stays two
The short trouble detection of pole pipe or electric capacity, described controller includes:
Processing unit, in operational mode, crosses stream letter receive second controller transmission first
Number time, it is judged that whether capacitance voltage less than preset capacitance voltage value, and judges that supply voltage value is the biggest
In preset power magnitude of voltage, if capacitance voltage is less than preset capacitance voltage value, and supply voltage value is more than
Preset power magnitude of voltage, then add 1 by the value of the second enumerator, and the value of described second enumerator is currency,
The initial value of the second enumerator is 0；If the value of described second enumerator is more than second in the 3rd preset time
Default value, then judge described circuit generation shorted diode or capacitance short-circuit fault.
11. 1 kinds of detection tester for electronic circuit faults, it is characterised in that including:
As described in any one in claim 8 to 9 controller as the first controller or as right want
Ask controller described in 10 as the first controller, and second controller；
Wherein, described second controller, for sending the first over-current signal to the first controller, and connecing
Interrupted after receiving stream reset signal sending the first over-current signal to the first controller.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI542122B (en) * | 2014-06-19 | 2016-07-11 | 立錡科技股份有限公司 | Power supply system and short circuit and/or bad connection detection method thereof, and power converter thereof |
| CN106714349A (en) * | 2015-07-21 | 2017-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating system and control method of electromagnetic heating system |
| CN105353300B (en) * | 2015-10-21 | 2018-04-20 | 珠海格力电器股份有限公司 | A.C. contactor detection method and system |
| WO2019058671A1 (en) * | 2017-09-25 | 2019-03-28 | 日本電産株式会社 | Malfunction diagnosis method, motor control method, power conversion device, motor module, and electric power steering device |
| CN107632551A (en) * | 2017-10-10 | 2018-01-26 | 航天科技控股集团股份有限公司 | A kind of digital quantity measuring method and system based on intelligent checking system |
| CN108008281B (en) * | 2017-11-16 | 2020-10-09 | 易事特集团股份有限公司 | Fault detection method, system, computer device and storage medium |
| CN108688499A (en) * | 2018-05-25 | 2018-10-23 | 广汽丰田汽车有限公司 | Temperature of powered cell Acquisition Circuit and system, electric vehicle |
| EP3706281B1 (en) | 2018-11-14 | 2023-02-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and system for verifying failure of electronic equipment |
| JP2020154431A (en) * | 2019-03-18 | 2020-09-24 | キオクシア株式会社 | Electronic apparatus and information recording method of electronic apparatus |
| CN112701898B (en) * | 2019-10-23 | 2022-06-28 | 联合汽车电子有限公司 | Slow starting circuit control method and device |
| TWI717965B (en) * | 2020-01-08 | 2021-02-01 | 敦泰電子股份有限公司 | Display module, display driver integrated circuit and restarting method for display driver integrated circuit when abnormal voltage occurs |
| CN114221534A (en) * | 2021-11-10 | 2022-03-22 | 华为技术有限公司 | Slow starting circuit, control method thereof and power supply equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2631091Y (en) * | 2003-07-22 | 2004-08-04 | 杨会超 | Capacitor short-circuit automatic protecting device |
| WO2007075617A2 (en) * | 2005-12-19 | 2007-07-05 | Silicon Laboratories Inc. | Current sensor |
| CN102647084A (en) * | 2012-05-10 | 2012-08-22 | 上海能巍电气科技有限公司 | Buck-boost conversion circuit capable of identifying in-phase control voltage |
-
2013
- 2013-12-12 CN CN201310683574.9A patent/CN103713255B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2631091Y (en) * | 2003-07-22 | 2004-08-04 | 杨会超 | Capacitor short-circuit automatic protecting device |
| WO2007075617A2 (en) * | 2005-12-19 | 2007-07-05 | Silicon Laboratories Inc. | Current sensor |
| CN102647084A (en) * | 2012-05-10 | 2012-08-22 | 上海能巍电气科技有限公司 | Buck-boost conversion circuit capable of identifying in-phase control voltage |
Non-Patent Citations (3)
| Title |
|---|
| An Improved Hiccup Mode Short-Circuit Protection Technique With Effective Overshoot Suppression for DC–DC Converters;Yanming Li 等;《IEEE TRANSACTIONS ON POWER ELECTRONICS》;20130228;第28卷(第2期);第877-885页 * |
| Analysis of a Voltage Controlled Frequency Foldback Technique that Improves Short Circuit Protection for Buck Derived Converters;Philip Cooke;《Telecommunications Energy Conference,1996.INTELEC "96.,18th International》;19961010;第749-755页 * |
| Buck型逆变器电流瞬时值反馈控制策略;王国玲;《中国电机工程学报》;20111225;第31卷(第36期);第25-32页 * |
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