CN105068021B - The offline failure detector of Switching Power Supply and system - Google Patents
The offline failure detector of Switching Power Supply and system Download PDFInfo
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- CN105068021B CN105068021B CN201510557238.9A CN201510557238A CN105068021B CN 105068021 B CN105068021 B CN 105068021B CN 201510557238 A CN201510557238 A CN 201510557238A CN 105068021 B CN105068021 B CN 105068021B
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Abstract
The invention provides a kind of offline failure detector of Switching Power Supply, wherein device includes at least one of：Whether the offline fault detection module of power circuit electrically connects with Switching Power Supply, normal for the first power circuit of detection switch power supply and the work of the second power circuit；The offline fault detection module of control circuit electrically connects with Switching Power Supply, and whether the control circuit work for detection switch power supply is normal；The offline fault detection module of drive circuit electrically connects with Switching Power Supply, and whether the drive circuit works for detection switch power supply are normal；The offline fault detection module of accessory power supply electrically connects with Switching Power Supply, and whether the accessory power supply work for detection switch power supply is normal；The offline fault detection module of telecommunication circuit electrically connects with Switching Power Supply, and whether the telecommunication circuit work for detection switch power supply is normal.It is possible thereby to improve the offline fault detect speed of the Switching Power Supply, shorten the troubleshooting time.
Description
Technical field
The present invention relates to electric field, more particularly to a kind of offline failure detector of Switching Power Supply and system.
Background technology
Switching Power Supply (Switching Mode Power Supply), also known as exchange type power, switch converters, are one
Kind high frequency device for converting electric energy.Its function is by the voltage of a level, and user terminal is converted to through various forms of frameworks
Required voltage or electric current.Switching Power Supply realizes the power of certain specification generally by the high frequency switch mode of power device
The device of conversion, referring to Fig. 1, generally include control circuit, drive circuit, power circuit, accessory power supply and telecommunication circuit etc.
Part.
Because Switching Power Supply internal electronic device is more, circuit function is complex, once breaking down, either controls
The failure of circuit, or power circuit damage, are generally required for comprehensively checking the Switching Power Supply of failure, fix a breakdown
Cycle it is longer, the working service to Switching Power Supply brings greater inconvenience, or even influences the operation shape of its mating electrical system
State.
The content of the invention
It is contemplated that at least overcome one of drawbacks described above to provide a kind of offline failure detector of Switching Power Supply and system,
The offline fault detect speed of Switching Power Supply is improved, shortens the troubleshooting time, improves the health control ability of Switching Power Supply product.
To reach above-mentioned purpose, what technical scheme was specifically realized in：
One aspect of the present invention provides a kind of offline failure detector of Switching Power Supply, including at least one of：
It is the offline fault detection module of power circuit, the offline fault detection module of control circuit, the offline fault detection module of drive circuit, auxiliary
Help the offline fault detection module of power supply, the offline fault detection module of telecommunication circuit；Wherein：The offline fault detect of power circuit
Module electrically connects with Switching Power Supply, and the first power circuit and the work of the second power circuit for detecting the Switching Power Supply are
It is no normal；The offline fault detection module of control circuit electrically connects with the Switching Power Supply, for detecting the Switching Power Supply
Control circuit work it is whether normal；The offline fault detection module of drive circuit electrically connects with the Switching Power Supply, is used for
Whether the drive circuit works for detecting the Switching Power Supply are normal；The offline fault detection module of accessory power supply and the switch
Whether power electric connection, the accessory power supply for detecting the Switching Power Supply work normal；The offline failure inspection of telecommunication circuit
Survey module to electrically connect with the Switching Power Supply, whether the telecommunication circuit for detecting the Switching Power Supply works normal.
In addition, the offline fault detection module of power circuit detects the first work(of the Switching Power Supply in the following way
Whether rate circuit and the work of the second power circuit are normal：The offline fault detection module of power circuit is respectively to described first
Device in power circuit and second power circuit is driven in turn；Detect the conducting state of each device；Receive
Detection signal, and judge whether testing result meets preset range；If the testing result for detecting each device is satisfied by presetting
Scope, then detect that first power circuit and second power circuit are normal；If detect the detection of any device
As a result preset range is unsatisfactory for, then detects first power circuit or the second power circuit failure.
In addition, the offline fault detection module of control circuit at least one the in the following way detection Switching Power Supply
Control circuit work it is whether normal：The offline fault detection module of control circuit sends the first detection to the control circuit
Data；Receive the first detection data response data that the control circuit returns；Judge the first detection data and described the
Whether one detection data response data is identical；If the first detection data detect data response data not phase with described first
Together, then the control circuit failure is detected；With
The offline fault detection module of control circuit detects the waveform of the control circuit output；Judge the ripple received
Whether shape is identical with predetermined waveform；If the waveform received differs with predetermined waveform, the control circuit event is detected
Barrier；With
The offline fault detection module of control circuit is sampled to obtain detected value to predeterminated voltage；Receive the control
Circuit to the predeterminated voltage sample the conversion value of acquisition；Judge the difference of the conversion value and detected value received
Whether the absolute value of value meets preset range；If the conversion value and the absolute value of the difference of the detected value are unsatisfactory for presetting
Scope, then detect the control circuit failure.
In addition, the offline fault detection module of drive circuit detects the driving electricity of the Switching Power Supply in the following way
Whether road work is normal：The offline fault detection module of drive circuit inputs default ripple signal to the drive circuit；Receive
The driving of the drive circuit, detect activation result；Judge whether the activation result meets default result；If the driving
As a result the default result is unsatisfactory for, then detects the drive circuit failure.
In addition, the offline fault detection module of accessory power supply detects the auxiliary electricity of the Switching Power Supply in the following way
Whether source work is normal：The offline fault detection module of accessory power supply carries out mould to the VD of the accessory power supply
Number conversion；Judge whether transformation result meets pre-set output voltage value；If transformation result meets pre-set output voltage value, sentence
Breaking, it is normal the accessory power supply；If transformation result is unsatisfactory for pre-set output voltage value, the accessory power supply event is judged
Barrier.
In addition, the offline fault detection module of telecommunication circuit detects the communication electricity of the Switching Power Supply in the following way
Whether road work is normal：The offline fault detection module of telecommunication circuit is according to preset rules by the telecommunication circuit to described
Control circuit sends preset data；Receive the returned data that the control circuit returns；Judge the returned data with it is described pre-
If whether data are identical；If the returned data differs with the preset data, or does not receive the returned data,
Then detect the telecommunication circuit failure.
In addition, device also includes：Reminding module；The reminding module, carried out when detecting the Switching Power Supply failure
Alarm.
Another aspect of the present invention provides a kind of offline fault detection system of Switching Power Supply, including：Switching Power Supply and on
The offline failure detector of Switching Power Supply stated；Wherein：The Switching Power Supply includes：First power circuit, the second power circuit,
Control circuit, drive circuit, accessory power supply and telecommunication circuit；The drive circuit and first power circuit, described the
Two power circuits and accessory power supply electrical connection；The control circuit and second power circuit, the drive circuit,
The accessory power supply and telecommunication circuit electrical connection；In the offline failure detector of Switching Power Supply：The power circuit from
Line fault detection module electrically connects with first power circuit and second power circuit, for detecting first work(
Whether rate circuit and second power circuit work are normal；The offline fault detection module of control circuit and the control
Whether circuit electrically connects, normal for detecting the control circuit work；The offline fault detection module of the drive circuit and institute
Drive circuit electrical connection is stated, it is whether normal for detecting the drive circuit works；The offline fault detect mould of accessory power supply
Whether block electrically connects with the accessory power supply, normal for detecting the accessory power supply work；The offline failure of telecommunication circuit
Whether detection module electrically connects with the telecommunication circuit, normal for detecting the telecommunication circuit work.
In addition, the Switching Power Supply is LLC resonant powers.
As seen from the above technical solution provided by the invention, the offline fault detect dress of Switching Power Supply provided by the invention
Put and system, by automatic decision power circuit, control circuit, accessory power supply, drive circuit, telecommunication circuit working condition,
Under conditions of known Switching Power Supply operation irregularity, carry out fault detect work, can greatly improve the Switching Power Supply from
Line fault detect speed, shorten the troubleshooting time, improve the health control ability of Switching Power Supply product.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of Switching Power Supply in the prior art；
Fig. 2 is the structured flowchart of the offline fault detection system of Switching Power Supply provided in an embodiment of the present invention；
Fig. 3 is the concrete structure schematic diagram of the offline fault detection system of Switching Power Supply provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the offline failure detector of Switching Power Supply provided in an embodiment of the present invention；
Fig. 5 is the offline fault detection module fault detect flow of power circuit provided in an embodiment of the present invention；
Fig. 6 is the offline fault detection module fault detect flow of control circuit provided in an embodiment of the present invention；
Fig. 7 is the offline fault detection module fault detect flow of accessory power supply provided in an embodiment of the present invention.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
Fig. 2 is the structured flowchart of the offline fault detection system of Switching Power Supply provided in an embodiment of the present invention, and Fig. 3 is the present invention
The concrete structure schematic diagram for the offline fault detection system of Switching Power Supply that embodiment provides, Fig. 4 are provided in an embodiment of the present invention
The structural representation of the offline failure detector of Switching Power Supply, below in conjunction with Fig. 2, Fig. 3 and Fig. 4, the embodiment of the present invention is provided
The offline fault detection system of Switching Power Supply illustrate, it is specific as follows：
The offline fault detection system of Switching Power Supply provided in an embodiment of the present invention, including：Switching Power Supply and Switching Power Supply
Offline failure detector.
Hereinafter, the offline failure detector of Switching Power Supply provided in an embodiment of the present invention is illustrated first, referring to figure
4, the device can include at least one of：
The offline failure inspection of the offline fault detection module of power circuit, the offline fault detection module of control circuit, drive circuit
Survey module, the offline fault detection module of accessory power supply, the offline fault detection module of telecommunication circuit；Wherein：
The offline fault detection module of power circuit electrically connects with Switching Power Supply, the first power electricity for detection switch power supply
Whether road and the work of the second power circuit are normal；
The offline fault detection module of control circuit electrically connects with Switching Power Supply, the control circuit work for detection switch power supply
Whether normal make；
The offline fault detection module of drive circuit electrically connects with Switching Power Supply, the drive circuit work for detection switch power supply
Whether normal make；
The offline fault detection module of accessory power supply electrically connects with Switching Power Supply, the accessory power supply work for detection switch power supply
Whether normal make；
The offline fault detection module of telecommunication circuit electrically connects with Switching Power Supply, the telecommunication circuit work for detection switch power supply
Whether normal make.
And each module of the above, it can be determined according to being actually needed, the offline fault detect of Switching Power Supply of the invention
Device is not limited to all set all modules, setting unit module is also not limited to, as long as can realize split powered-down
The most basic detection in source, all should belong to protection scope of the present invention.
And in the offline fault detection system of Switching Power Supply provided in an embodiment of the present invention, Switching Power Supply can include：First
Power circuit, the second power circuit, control circuit, drive circuit, accessory power supply and telecommunication circuit；Drive circuit and the first work(
Rate circuit, the second power circuit and accessory power supply electrical connection；Control circuit and the second power circuit, drive circuit, auxiliary electricity
Source and telecommunication circuit electrical connection.Certainly, the present invention by Switching Power Supply be LLC resonant powers exemplified by the present invention Switching Power Supply
Offline fault detection system illustrates, but the invention is not limited in LLC resonant powers, as long as opening for the present invention can be applied
The powered-down offline fault detection system in source carries out fault detect, all should belong to protection scope of the present invention.
Wherein, the power circuit in LLC resonant powers is mainly responsible for completing power streaming and voltage conversion function；LLC
Accessory power supply in resonant power is mainly responsible for its control circuit and fan is powered, the control circuit master in LLC resonant powers
It is used for data acquisition processing, by the computing of closed loop control algorithm, obtains corresponding controlled quentity controlled variable, then incited somebody to action by drive circuit
Controlled quentity controlled variable is converted to drive signal, while is responsible for power circuit and provides protection against；Drive circuit master in LLC resonant powers
The power device on/off being used in driving power circuit；Telecommunication circuit in LLC resonant powers is mainly used in completion and opened
Data interaction function between powered-down source and between Switching Power Supply and host computer.And power circuit, accessory power supply, control circuit,
Whether the device in any portion in drive circuit and telecommunication circuit, which damages, all directly determines that the work of LLC resonant powers is
It is no normal.
Thus, the offline failure detector of Switching Power Supply can be realized to Switching Power Supply at least one in the following manner
Detection：
The offline fault detection module of power circuit electrically connects with the first power circuit and the second power circuit, for detecting
Whether the first power circuit and the work of the second power circuit are normal；
The offline fault detection module of control circuit electrically connects with control circuit, for whether just to detect control circuit work
Often；
The offline fault detection module of drive circuit electrically connects with drive circuit, for whether just to detect drive circuit works
Often；
The offline fault detection module of accessory power supply electrically connects with accessory power supply, for whether just to detect accessory power supply work
Often；
The offline fault detection module of telecommunication circuit electrically connects with telecommunication circuit, for whether just to detect telecommunication circuit work
Often.
As can be seen here, by the offline failure detector of Switching Power Supply provided in an embodiment of the present invention and system, by certainly
It is dynamic to judge power circuit, control circuit, accessory power supply, drive circuit, the working condition of telecommunication circuit, in known Switching Power Supply work
Under conditions of making exception, carry out fault detect work, can greatly improve the offline fault detect speed of the Switching Power Supply, contracting
The short troubleshooting time, improve the health control ability of Switching Power Supply product.
As an optional embodiment of the embodiment of the present invention, the offline fault detection module of power circuit can be by such as
Whether the first power circuit of under type detection switch power supply and the work of the second power circuit are normal：The offline failure of power circuit
Detection module is driven in turn to the device in the first power circuit and the second power circuit respectively；Detect each device
Conducting state；Detection signal is received, and judges whether testing result meets preset range；If detect the detection knot of each device
Fruit is satisfied by preset range, then detects that the first power circuit and the second power circuit are normal；If detect any device
Testing result is unsatisfactory for preset range, then detects the first power circuit or the second power circuit failure.
Specifically, independent power electricity is devised in the offline failure detector of Switching Power Supply provided in an embodiment of the present invention
The offline fault detection module in road, the detection module can have detection circuit and independent processor, can also only have detection
Circuit, testing result is sent to the processor of the offline failure detector of Switching Power Supply, the present invention this is not limited.
In the offline fault detection module of power circuit, independent drive circuit is devised to the switching device in each power circuit, is passed through
Switching device in each power circuit is driven in turn, each conducting state of circuit judges is detected, detection signal is delivered to
Processor, it is compared with desired extent, so as to judge whether the power device damages.Idiographic flow may refer to Fig. 5.
Certainly, what is the first power circuit and the second power circuit detected in the present invention can be a power circuit
Offline fault detection module, can also set two offline fault detection modules of power circuit (such as：First power circuit is offline
Fault detection module and the offline fault detection module of the second power circuit), as long as can realize to the first power circuit and second
The module that power circuit is detected, protection scope of the present invention all should be belonged to.
As an optional embodiment of the embodiment of the present invention, the offline fault detection module of control circuit can be by such as
Whether the control circuit work of at least one under type detection switch power supply is normal：
The offline fault detection module of control circuit sends the first detection data to control circuit；Receive what control circuit returned
First detection data response data；Judge whether the first detection data and the first detection data response data are identical；If first
Detection data differ with the first detection data response data, then detect control circuit failure；
With
The waveform of the offline fault detection module detection control circuit output of control circuit；The waveform for judging to receive is with presetting
Whether waveform is identical；If the waveform received differs with predetermined waveform, control circuit failure is detected；
With
The offline fault detection module of control circuit is sampled to obtain detected value to predeterminated voltage；Control circuit is received to pre-
If voltage sample the conversion value of acquisition；It is pre- whether the conversion value and the absolute value of the difference of detected value that judgement receives meet
If scope；If the absolute value of the difference of conversion value and detected value is unsatisfactory for preset range, control circuit failure is detected.
Whether if the offline fault detection module of control circuit only carries out detection control circuit by one way in which former
Barrier, then can detect that control circuit is normal, if passing through two of which when condition corresponding with detection mode meets below
Mode detect control circuit whether failure, then two kinds of bars corresponding with the two ways of detection in following detection mode
Part can detect that control circuit is normal when meeting simultaneously；If by three kinds of modes carry out detect control circuit whether failure,
Then it can just detect that control circuit is normal when following condition is satisfied by.Above-mentioned each condition includes：First detection data
It is identical with the first detection data response data；The waveform received is identical with predetermined waveform；With the difference of conversion value and detected value
Absolute value meet preset range.
Certainly, orders that are of the invention and limiting above-mentioned three kinds of detections, as long as can realize to all kinds of of control circuit detection
Order all should belong to protection scope of the present invention.
Specifically, independent control can be designed in the offline failure detector of Switching Power Supply provided in an embodiment of the present invention
The offline fault detection module of circuit, the detection module can have detection circuit and independent processor, can also only have inspection
Slowdown monitoring circuit, testing result is sent to the processor of the offline failure detector of Switching Power Supply, the present invention this is not limited
The module can mainly implement function such as：
(1) A/D sampling functions failure offline inspection：Make control circuit and the inspection in the offline fault detection module of control circuit
Slowdown monitoring circuit samples a certain magnitude of voltage and carries out A/D conversions jointly, is then compared it, and then may determine that A/D sampling functions
Go out and whether break down.
(2) square wave output function detects：The specific I/O pins for making control circuit by default program export impulse wave,
The detection plate in the offline fault detection module of control circuit is set to detect the pulse square wave, so as to understand control panel pulse output function
It is whether normal.
Hereinafter, by taking Fig. 6 as an example, the detection method of the offline fault detection module of control circuit of the embodiment of the present invention is carried out
Illustrate, but the invention is not limited in this：
(1) the offline fault detection module of control circuit sends the first detection data to control panel (also referred to as control circuit)；
(2) the first detection data response data that control panel returns is received；
(3) judge whether the first detection data and the first detection data response data are identical；
(4) if the first detection data differ with the first detection data response data, control circuit failure is detected；
(5) if the first detection data are identical with the first detection data response data, the control that detection detection plate receives
The waveform of circuit output processed, such as square wave；
(6) whether the waveform (such as square wave) and predetermined waveform that judgement receives are identical；
(7) if the waveform received differs with predetermined waveform, control circuit failure is detected；
(8) if the waveform received is identical with predetermined waveform, predeterminated voltage is sampled to obtain detected value U1；
(9) the conversion value U2 that control panel to predeterminated voltage sample acquisition is received；
(10) conversion value for judging to receive | U1-U2 | whether meet preset range；
(11) if being unsatisfactory for preset range, control circuit failure is detected；
(12) if meeting preset range, detection control board work is normal.
As an optional embodiment of the embodiment of the present invention, the offline fault detection module of drive circuit can be by such as
Whether the drive circuit works of under type detection switch power supply are normal：The offline fault detection module of drive circuit is defeated to drive circuit
Enter default ripple signal；Receive the driving of drive circuit, detect activation result；Judge whether activation result meets default result；Such as
Fruit activation result is unsatisfactory for default result, then detects drive circuit failure.
Specifically, independent driving electricity is designed in the offline failure detector of Switching Power Supply provided in an embodiment of the present invention
The offline fault detection module in road, the detection module can have detection circuit and independent processor, can also only have detection
Circuit, testing result is sent to the processor of the offline failure detector of Switching Power Supply.Drive circuit event offline can be passed through
The detection circuit hindered in detection module inputs a series of quasi-square wave signal to the drive circuit of Switching Power Supply, and then electric with driving
The half-bridge circuit detected inside circuit that driving is made up of MOSFET is removed on road, by detecting the level of the half-bridge circuit, judges to drive
Whether dynamic circuit breaks down.
As an optional embodiment of the embodiment of the present invention, the offline fault detection module of accessory power supply can be by such as
Whether the accessory power supply work of under type detection switch power supply is normal：The offline fault detection module of accessory power supply is to accessory power supply
VD carries out analog-to-digital conversion；Judge whether transformation result meets pre-set output voltage value；If transformation result meets
Pre-set output voltage value, then judge that accessory power supply is normal；If transformation result is unsatisfactory for pre-set output voltage value, judge
Accessory power supply failure.
Specifically, independent auxiliary electricity is designed in the offline failure detector of Switching Power Supply provided in an embodiment of the present invention
The offline fault detection module in source, the detection module can have detection circuit and independent processor, can also only have detection
Circuit, testing result is sent to the processor of the offline failure detector of Switching Power Supply.The offline fault detect mould of accessory power supply
Detection circuit in block can carry out analog-to-digital conversion to the VD (5V, 15V ,+12V, -12V) of accessory power supply, and will
Transformation result is sent into processor, by compared with the magnitude of voltage of desired output, then may determine that whether accessory power supply occurs
Failure.The offline fault detection module fault detect flow of the specific accessory power supply can be as shown in Figure 7.
As an optional embodiment of the embodiment of the present invention, the offline fault detection module of telecommunication circuit can be by such as
Whether the telecommunication circuit work of under type detection switch power supply is normal：The offline fault detection module of telecommunication circuit is according to preset rules
Preset data is sent to control circuit by telecommunication circuit；Receive the returned data that control circuit returns；Judge returned data with
Whether preset data is identical；If returned data differs with preset data, or does not receive returned data, then detect to lead to
Believe fault.
Specifically, independent communication electricity is designed in the offline failure detector of Switching Power Supply provided in an embodiment of the present invention
The offline fault detection module in road, the detection module can have detection circuit and independent processor, can also only have detection
Circuit, testing result is sent to the processor of the offline failure detector of Switching Power Supply.In the present embodiment, the event of telecommunication circuit
Barrier detection method can use period answer mechanism, by making detection plate (detection circuit) regularly to the control panel of Switching Power Supply
(control circuit) sends a cluster data, and control panel is returned to detection plate again after receiving data, and detection plate receives data
Compared with the data that oneself sends, if the same illustrate that control panel communication function is intact, otherwise break down.
As an optional embodiment of the embodiment of the present invention, the offline failure of Switching Power Supply provided in an embodiment of the present invention
Detection means can also include：Reminding module；The reminding module, alarmed when detection means detects Switching Power Supply failure
Prompting.
Specifically, the reminding module can be voice cue module and/or display reminding module, can be with each detection mould
Block is corresponded, and after the detection of each detection module is out of order, corresponding reminding module is prompted, and can also only set one
Reminding module, after the detection of each detection module is out of order, prompted by the reminding module.The present invention enters not to this
Row limitation, by the prompting of reminding module, user can clearly know Switching Power Supply, and partly there is failure in which, improves detection
Efficiency.
As can be seen here, using the offline failure detector of Switching Power Supply provided in an embodiment of the present invention, automatic decision is passed through
Power circuit, control circuit, accessory power supply, drive circuit, the working condition of telecommunication circuit, greatly improve Switching Power Supply
Offline fault detect speed, shortens the troubleshooting time, improves the health control ability of Switching Power Supply product.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
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 above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is carried out
Limit, on the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to technical scheme
The various modifications made and improvement, it all should fall into the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of offline failure detector of Switching Power Supply, it is characterised in that including at least one of：
The offline fault detection module of power circuit, the offline fault detection module of control circuit, the offline fault detect mould of drive circuit
The offline fault detection module of block, accessory power supply, the offline fault detection module of telecommunication circuit；Wherein：
The offline fault detection module of power circuit electrically connects with Switching Power Supply, for detecting the first work(of the Switching Power Supply
Whether rate circuit and the work of the second power circuit are normal；
The offline fault detection module of control circuit electrically connects with the Switching Power Supply, for detecting the control of the Switching Power Supply
Whether circuit work processed is normal；
The offline fault detection module of drive circuit electrically connects with the Switching Power Supply, for detecting the drive of the Switching Power Supply
Whether dynamic circuit work is normal；
The offline fault detection module of accessory power supply electrically connects with the Switching Power Supply, for detecting the auxiliary of the Switching Power Supply
Help power work whether normal；
The offline fault detection module of telecommunication circuit electrically connects with the Switching Power Supply, for detecting the logical of the Switching Power Supply
Believe whether circuit work is normal.
2. device according to claim 1, it is characterised in that the offline fault detection module of power circuit passes through as follows
Mode detect the Switching Power Supply the first power circuit and the second power circuit work it is whether normal：
The offline fault detection module of power circuit is respectively in first power circuit and second power circuit
Device driven in turn；
Detect the conducting state of each device；
Detection signal is received, and judges whether testing result meets preset range；
If the testing result for detecting each device is satisfied by preset range, first power circuit and described is detected
Second power circuit is normal；
If the testing result for detecting any device is unsatisfactory for preset range, first power circuit or described is detected
Second power circuit failure.
3. device according to claim 1, it is characterised in that the offline fault detection module of control circuit passes through as follows
Whether the control circuit work that at least one mode detects the Switching Power Supply is normal：
The offline fault detection module of control circuit sends the first detection data to the control circuit；
Receive the first detection data response data that the control circuit returns；
Judge whether the first detection data and the described first detection data response data are identical；
If the first detection data differ with the described first detection data response data, the control circuit is detected
Failure；
With
The offline fault detection module of control circuit detects the waveform of the control circuit output；
Whether the waveform and predetermined waveform that judgement receives are identical；
If the waveform received differs with predetermined waveform, the control circuit failure is detected；
With
The offline fault detection module of control circuit is sampled to obtain detected value to predeterminated voltage；
Receive the conversion value that the control circuit to the predeterminated voltage sample acquisition；
Judge whether the absolute value of the difference of the conversion value and detected value received meets preset range；
If the conversion value and the absolute value of the difference of the detected value are unsatisfactory for preset range, the control electricity is detected
Road failure.
4. device according to claim 1, it is characterised in that the offline fault detection module of drive circuit passes through as follows
Whether the drive circuit works that mode detects the Switching Power Supply are normal：
The offline fault detection module of drive circuit inputs default ripple signal to the drive circuit；
Receive the driving of the drive circuit, detect activation result；
Judge whether the activation result meets default result；
If the activation result is unsatisfactory for the default result, the drive circuit failure is detected.
5. device according to claim 1, it is characterised in that the offline fault detection module of accessory power supply passes through as follows
Whether the accessory power supply work that mode detects the Switching Power Supply is normal：
The offline fault detection module of accessory power supply carries out analog-to-digital conversion to the VD of the accessory power supply；
Judge whether transformation result meets pre-set output voltage value；
If transformation result meets pre-set output voltage value, judge that the accessory power supply is normal；
If transformation result is unsatisfactory for pre-set output voltage value, the accessory power supply failure is judged.
6. device according to claim 1, it is characterised in that the offline fault detection module of telecommunication circuit passes through as follows
Whether the telecommunication circuit work that mode detects the Switching Power Supply is normal：
The offline fault detection module of telecommunication circuit is sent out according to preset rules by the telecommunication circuit to the control circuit
Send preset data；
Receive the returned data that the control circuit returns；
Judge whether the returned data is identical with the preset data；
If the returned data differs with the preset data, or does not receive the returned data, then institute is detected
State telecommunication circuit failure.
7. according to the device described in any one of claim 1 to 6, it is characterised in that also include：Reminding module；
The reminding module, alarm is carried out when detecting the Switching Power Supply failure.
A kind of 8. offline fault detection system of Switching Power Supply, it is characterised in that including：Switching Power Supply and such as claim 1 to 7
The offline failure detector of Switching Power Supply described in any one；Wherein：
The Switching Power Supply includes：First power circuit, the second power circuit, control circuit, drive circuit, accessory power supply and
Telecommunication circuit；
The drive circuit electrically connects with first power circuit, second power circuit and the accessory power supply；
The control circuit and second power circuit, the drive circuit, the accessory power supply and the telecommunication circuit
Electrical connection；
In the offline failure detector of Switching Power Supply：
The offline fault detection module of power circuit electrically connects with first power circuit and second power circuit,
It is whether normal for detecting first power circuit and second power circuit work；
The offline fault detection module of control circuit electrically connects with the control circuit, for detecting the control circuit work
It is whether normal；
The offline fault detection module of drive circuit electrically connects with the drive circuit, for detecting the drive circuit works
It is whether normal；
The offline fault detection module of accessory power supply electrically connects with the accessory power supply, for detecting the accessory power supply work
It is whether normal；
The offline fault detection module of telecommunication circuit electrically connects with the telecommunication circuit, for detecting the telecommunication circuit work
It is whether normal.
9. system according to claim 8, it is characterised in that the Switching Power Supply is LLC resonant powers.
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| CN201510557238.9A CN105068021B (en) | 2015-09-02 | 2015-09-02 | The offline failure detector of Switching Power Supply and system |
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| CN201510557238.9A CN105068021B (en) | 2015-09-02 | 2015-09-02 | The offline failure detector of Switching Power Supply and system |
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| CN115955084B (en) * | 2023-03-13 | 2023-06-27 | 深圳市鼎阳科技股份有限公司 | Method and corresponding device for controlling accurate output of switching power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7539028B2 (en) * | 2005-07-01 | 2009-05-26 | Power Integrations, Inc. | Method and apparatus for fault detection in a switching power supply |
| CN201893605U (en) * | 2010-02-03 | 2011-07-06 | 北京奥福瑞科技有限公司 | Intelligent on-line testing and optimal management control device of high-frequency switch power supply |
| CN101783578B (en) * | 2010-02-03 | 2012-07-25 | 北京奥福瑞科技有限公司 | Intelligent online detection optimizing management control method of high-frequency switch power supply, and device thereof |
| CN102116849B (en) * | 2010-12-10 | 2013-04-17 | 中国人民解放军第二炮兵装备研究院 | Noncontact type measuring system and measuring method for switch power working parameters |
| CN102331563B (en) * | 2011-08-04 | 2013-10-16 | 江苏茶花电气有限公司 | Method for testing ultrahigh frequency multi-channel switching power supply |
| CN102590762B (en) * | 2012-03-01 | 2014-02-12 | 西安电子科技大学 | Information entropy principle-based method for fault diagnosis of switch power supply |
| CN103064034A (en) * | 2012-11-30 | 2013-04-24 | 华为机器有限公司 | Check method and check device of switch power supply |
| CN103391013A (en) * | 2013-06-24 | 2013-11-13 | 北京电子工程总体研究所 | Missile test switch power supply with fault memorizing function |
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