CN105068021A - Switching mode power supply offline fault detection device and system - Google Patents
Switching mode power supply offline fault detection device and system Download PDFInfo
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- CN105068021A CN105068021A CN201510557238.9A CN201510557238A CN105068021A CN 105068021 A CN105068021 A CN 105068021A CN 201510557238 A CN201510557238 A CN 201510557238A CN 105068021 A CN105068021 A CN 105068021A
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Abstract
The invention provides a switching mode power supply offline fault detection device comprising at least one of the following modules: a power circuit offline fault detection module which is electrically connected with a switching mode power supply and is used to detect whether a first power circuit and a second power circuit of the switching mode power supply work normally, a control circuit offline fault detection module which is electrically connected with the switching mode power supply and is used to detect whether a control circuit of the switching mode power supply works normally, a drive circuit offline fault detection module which is electrically connected with the switching mode power supply and is used to detect whether a drive circuit of the switching mode power supply works normally, an auxiliary power supply offline fault detection module which is electrically connected with the switching mode power supply and is used to detect whether an auxiliary power supply of the switching mode power supply works normally, and a communication circuit offline fault detection module which is electrically connected with the switching mode power supply and is used to detect whether a communication circuit of the switching mode power supply works normally. Therefore, the speed of switching mode power supply offline fault detection can be increased, and the time for fault elimination can be shortened.
Description
Technical field
The present invention relates to electric field, particularly relate to a kind of Switching Power Supply off-line failure detector and system.
Background technology
Switching Power Supply (SwitchingModePowerSupply), also known as exchange type power, switch converters, is a kind of high frequency device for converting electric energy.Its function is by the voltage of a position standard, is converted to the required voltage of user side or electric current through multi-form framework.Switching Power Supply is generally the device of the power conversion being realized certain specification by the high frequency switch mode of power device, see Fig. 1, generally includes the parts such as control circuit, driving circuit, power circuit, accessory power supply and telecommunication circuit.
Because Switching Power Supply internal electronic device is more, circuit function is comparatively complicated, once break down, it is no matter the fault of control circuit, or power circuit damages, and usually all need comprehensively to check the Switching Power Supply of fault, the cycle of fixing a breakdown is longer, bring greater inconvenience to the working service of Switching Power Supply, even affect the running status of its mating electrical system.
Summary of the invention
The present invention is intended at least to overcome one of above-mentioned defect provides a kind of Switching Power Supply off-line failure detector and system, improves the off-line fault detect speed of Switching Power Supply, shortens the troubleshooting time, improves the health control ability of Switching Power Supply product.
For achieving the above object, technical scheme of the present invention is specifically achieved in that
One aspect of the present invention provides a kind of Switching Power Supply off-line failure detector, comprise following one of at least: power circuit off-line fault detection module, control circuit off-line fault detection module, driving circuit off-line fault detection module, accessory power supply off-line fault detection module, telecommunication circuit off-line fault detection module; Wherein: described power circuit off-line fault detection module is electrically connected with Switching Power Supply, whether the first power circuit and the second power circuit work for detecting described Switching Power Supply be normal; Whether described control circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the control circuit work detecting described Switching Power Supply; Whether described driving circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the drive circuit works detecting described Switching Power Supply; Whether described accessory power supply off-line fault detection module is electrically connected with described Switching Power Supply, normal for the accessory power supply work detecting described Switching Power Supply; Whether described telecommunication circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the telecommunication circuit work detecting described Switching Power Supply.
In addition, described power circuit off-line fault detection module detect the first power circuit of described Switching Power Supply in the following way and the second power circuit work whether normal: described power circuit off-line fault detection module drives in turn to the device in described first power circuit and described second power circuit respectively; Detect the conducting state of each device; Receive detection signal, and judge whether testing result meets preset range; If the testing result detecting each device all meets preset range, then detect described first power circuit and described second operating circuit normal; If the testing result detecting arbitrary device does not meet preset range, then have the first power circuit or described second power circuit fault described in detecting.
In addition, whether described control circuit off-line fault detection module one of at least to detect the control circuit work of described Switching Power Supply in the following way normal: described control circuit off-line fault detection module sends first to described control circuit and detects data; Receive the first detection data response data that described control circuit returns; Whether identically judge that described first detection data and described first detect response data; If it is not identical that described first detection data and described first detect response data, then detect described control circuit fault; With
Described control circuit off-line fault detection module detects the waveform that described control circuit exports; Judge that whether the waveform received is identical with predetermined waveform; If the waveform received and predetermined waveform are not identical, then detect described control circuit fault; With
Described control circuit off-line fault detection module is carried out sampling to predeterminated voltage and is obtained detected value; Receive described control circuit and the conversion value obtained of sampling is carried out to described predeterminated voltage; Judge whether the absolute value of the difference of described conversion value and the described detected value received meets preset range; If the absolute value of the difference of described conversion value and described detected value does not meet preset range, then detect described control circuit fault.
In addition, whether the described driving circuit off-line fault detection module drive circuit works that detects described Switching Power Supply is in the following way normal: described driving circuit off-line fault detection module presets ripple signal to described driving circuit input; Accept the driving of described driving circuit, detect activation result; Judge whether described activation result meets and preset result; If described activation result does not meet described default result, then detect described driving circuit fault.
In addition, whether the accessory power supply work that detects described Switching Power Supply in the following way of described accessory power supply off-line fault detection module is normal: described accessory power supply off-line fault detection module carries out analog to digital conversion to the VD of described accessory power supply; Judge whether transformation result meets pre-set output voltage value; If transformation result meets pre-set output voltage value, then judge that described accessory power supply is normal; If transformation result does not meet pre-set output voltage value, then judge described accessory power supply fault.
In addition, whether the telecommunication circuit work that detects described Switching Power Supply in the following way of described telecommunication circuit off-line fault detection module is normal: described telecommunication circuit off-line fault detection module sends preset data by described telecommunication circuit to described control circuit according to preset rules; Receive the return data that described control panel returns; Judge that whether described return data is identical with described preset data; If described return data is not identical with described preset data, or do not receive described return data, then detect described telecommunication circuit fault.
In addition, device also comprises: reminding module; Described reminding module, carries out alarm when detecting described Switching Power Supply fault.
The present invention provides a kind of Switching Power Supply off-line fault detection system on the other hand, comprising: Switching Power Supply and above-mentioned Switching Power Supply off-line failure detector; Wherein: described Switching Power Supply comprises: the first power circuit, the second power circuit, control circuit, driving circuit, accessory power supply and telecommunication circuit; Described driving circuit is electrically connected with described first power circuit, described second power circuit and described accessory power supply; Described control circuit is electrically connected with described second power circuit, described driving circuit, described accessory power supply and described telecommunication circuit; In Switching Power Supply off-line failure detector: described power circuit off-line fault detection module is electrically connected with described first power circuit and described second power circuit, for detecting described first power circuit and whether described second power circuit work is normal; Whether described control circuit off-line fault detection module is electrically connected with described control circuit, normal for detecting described control circuit work; Whether described driving circuit off-line fault detection module is electrically connected with described driving circuit, normal for detecting described drive circuit works; Whether described accessory power supply off-line fault detection module is electrically connected with described accessory power supply, normal for detecting described accessory power supply work; Whether described telecommunication circuit off-line fault detection module is electrically connected with described telecommunication circuit, normal for detecting described telecommunication circuit work.
In addition, described Switching Power Supply is LLC resonant power.
As seen from the above technical solution provided by the invention, Switching Power Supply off-line failure detector provided by the invention and system, by the duty of automatic decision power circuit, control circuit, accessory power supply, driving circuit, telecommunication circuit, under the condition of known switch power work exception, carry out fault detect work, the off-line fault detect speed of this Switching Power Supply can be improved greatly, shorten the troubleshooting time, improve the health control ability of Switching Power Supply product.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of prior art breaker in middle power supply;
The structured flowchart of the Switching Power Supply off-line fault detection system that Fig. 2 provides for the embodiment of the present invention;
The concrete structure schematic diagram of the Switching Power Supply off-line fault detection system that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the Switching Power Supply off-line failure detector that Fig. 4 provides for the embodiment of the present invention;
The power circuit off-line fault detection module fault detect flow process that Fig. 5 provides for the embodiment of the present invention;
The control circuit off-line fault detection module fault detect flow process that Fig. 6 provides for the embodiment of the present invention;
The accessory power supply off-line fault detection module fault detect flow process that Fig. 7 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail.
The structured flowchart of the Switching Power Supply off-line fault detection system that Fig. 2 provides for the embodiment of the present invention, the concrete structure schematic diagram of the Switching Power Supply off-line fault detection system that Fig. 3 provides for the embodiment of the present invention, the structural representation of the Switching Power Supply off-line failure detector that Fig. 4 provides for the embodiment of the present invention, below in conjunction with Fig. 2, Fig. 3 and Fig. 4, the Switching Power Supply off-line fault detection system that the embodiment of the present invention provides is described, specific as follows:
The Switching Power Supply off-line fault detection system that the embodiment of the present invention provides, comprising: Switching Power Supply and Switching Power Supply off-line failure detector.
Below, first the Switching Power Supply off-line failure detector that the embodiment of the present invention provides is described, see Fig. 4, this device can comprise following one of at least:
Power circuit off-line fault detection module, control circuit off-line fault detection module, driving circuit off-line fault detection module, accessory power supply off-line fault detection module, telecommunication circuit off-line fault detection module; Wherein:
Power circuit off-line fault detection module is electrically connected with Switching Power Supply, for the first power circuit of detector switch power supply and the second power circuit work whether normal;
Control circuit off-line fault detection module is electrically connected with Switching Power Supply, and whether the control circuit work for detector switch power supply is normal;
Driving circuit off-line fault detection module is electrically connected with Switching Power Supply, and whether the drive circuit works for detector switch power supply is normal;
Accessory power supply off-line fault detection module is electrically connected with Switching Power Supply, and whether the accessory power supply work for detector switch power supply is normal;
Telecommunication circuit off-line fault detection module is electrically connected with Switching Power Supply, and whether the telecommunication circuit work for detector switch power supply is normal.
And above each module; can determine according to actual needs; Switching Power Supply off-line failure detector of the present invention is not limited to and all arranges all modules; also setting unit module is not limited to; as long as can realize, to the most basic detection of Switching Power Supply, all should protection scope of the present invention being belonged to.
And in the Switching Power Supply off-line fault detection system that the embodiment of the present invention provides, Switching Power Supply can comprise: the first power circuit, the second power circuit, control circuit, driving circuit, accessory power supply and telecommunication circuit; Driving circuit is electrically connected with the first power circuit, the second power circuit and accessory power supply; Control circuit is electrically connected with the second power circuit, driving circuit, accessory power supply and telecommunication circuit.Certainly; the present invention take Switching Power Supply as LLC resonant power for example is described Switching Power Supply off-line fault detection system of the present invention; but the present invention is not limited to LLC resonant power; as long as Switching Power Supply off-line fault detection system of the present invention can be applied carry out fault detect, protection scope of the present invention all should be belonged to.
Wherein, the power circuit primary responsibility in LLC resonant power completes poower flow transmission and voltage conversion function; Accessory power supply primary responsibility in LLC resonant power is powered for its control circuit and fan, control circuit in LLC resonant power is mainly used in data acquisition process, computing through closed loop control algorithm, obtain corresponding controlled quentity controlled variable, by driving circuit, controlled quentity controlled variable is converted to drive singal again, is responsible for power circuit simultaneously and defencive function is provided; Driving circuit in LLC resonant power is mainly used in the power device on/off in driving power circuit; Telecommunication circuit in LLC resonant power has been mainly used in the data interaction function between Switching Power Supply and between Switching Power Supply and host computer.And whether whether the device in any portion in power circuit, accessory power supply, control circuit, driving circuit and telecommunication circuit damages all directly to determine the work of LLC resonant power normal.
Thus, Switching Power Supply off-line failure detector one of at least can realize the detection to Switching Power Supply in the following manner:
Power circuit off-line fault detection module is electrically connected with the first power circuit and the second power circuit, for detecting the first power circuit and whether the second power circuit work is normal;
Whether control circuit off-line fault detection module is electrically connected with control circuit, normal for detection control circuit working;
Whether driving circuit off-line fault detection module is electrically connected with driving circuit, normal for detecting drive circuit works;
Whether accessory power supply off-line fault detection module is electrically connected with accessory power supply, normal for detecting accessory power supply work;
Whether telecommunication circuit off-line fault detection module is electrically connected with telecommunication circuit, normal for detecting telecommunication circuit work.
As can be seen here, the Switching Power Supply off-line failure detector provided by the embodiment of the present invention and system, by the duty of automatic decision power circuit, control circuit, accessory power supply, driving circuit, telecommunication circuit, under the condition of known switch power work exception, carry out fault detect work, the off-line fault detect speed of this Switching Power Supply can be improved greatly, shorten the troubleshooting time, improve the health control ability of Switching Power Supply product.
As an Alternate embodiments of the embodiment of the present invention, power circuit off-line fault detection module can in the following way the first power circuit of detector switch power supply and the second power circuit work whether normal: power circuit off-line fault detection module drives in turn to the device in the first power circuit and the second power circuit respectively; Detect the conducting state of each device; Receive detection signal, and judge whether testing result meets preset range; If the testing result detecting each device all meets preset range, then detect the first power circuit and the second operating circuit normal; If the testing result detecting arbitrary device does not meet preset range, then detect the first power circuit or the second power circuit fault.
Particularly, independently power circuit off-line fault detection module is devised in the Switching Power Supply off-line failure detector that the embodiment of the present invention provides, this detection module can have testing circuit and independently processor, also only testing circuit can be had, testing result is sent to the processor of Switching Power Supply off-line failure detector, the present invention does not limit this.In power circuit off-line fault detection module, independently driving circuit is devised to the switching device in each power circuit, by driving in turn the switching device in each power circuit, testing circuit judges each conducting state, detection signal is delivered to processor, compare with desired extent, thus judge whether this power device damages.Idiographic flow can see Fig. 5.
Certainly; what detect the first power circuit and the second power circuit in the present invention can be a power circuit off-line fault detection module; two power circuit off-line fault detection module (such as: the first power circuit off-line fault detection module and the second power circuit off-line fault detection module) also can be set; as long as the module detected the first power circuit and the second power circuit can be realized, protection scope of the present invention all should be belonged to.
As an Alternate embodiments of the embodiment of the present invention, control circuit off-line fault detection module can one of at least whether the control circuit work of detector switch power supply be normal in the following way:
Control circuit off-line fault detection module sends first to control circuit and detects data; The first detection data response data that reception control circuit returns; Whether identically judge that the first detection data and first detect response data; If it is not identical that the first detection data and first detect response data, then detect control circuit fault;
With
The waveform that control circuit off-line fault detection module detection control circuit exports; Judge that whether the waveform received is identical with predetermined waveform; If the waveform received and predetermined waveform are not identical, then detect control circuit fault;
With
Control circuit off-line fault detection module is carried out sampling to predeterminated voltage and is obtained detected value; Reception control circuit carries out to predeterminated voltage the conversion value obtained of sampling; Judge whether the absolute value of the difference of conversion value and the detected value received meets preset range; If the absolute value of the difference of conversion value and detected value does not meet preset range, then detect control circuit fault.
If control circuit off-line fault detection module only carries out detection control circuit whether fault by wherein a kind of mode, then can detect that control circuit is normal when the following condition corresponding with detection mode meets, if carry out detection control circuit whether fault by wherein two kinds of modes, then can detect that control circuit is normal when two kinds of corresponding with the two kinds of modes detected in following detection mode conditions meet simultaneously; If carry out detection control circuit whether fault by three kinds of modes, then just can detect when following condition all meets that control circuit is normal.Each above-mentioned condition comprises: it is identical that the first detection data and first detect response data; The waveform received is identical with predetermined waveform; Preset range is met with the absolute value of the difference of conversion value and detected value.
Certainly, the present invention also limits above-mentioned three kinds of orders detected, as long as can realize all should belonging to protection scope of the present invention to all kinds of orders of control circuit detection.
Particularly, independently control circuit off-line fault detection module is designed in the Switching Power Supply off-line failure detector that can provide in the embodiment of the present invention, this detection module can have testing circuit and independently processor, also only testing circuit can be had, testing result is sent to the processor of Switching Power Supply off-line failure detector, the present invention does not limit this module to this mainly can realize following function:
(1) A/D sampling functions fault offline inspection: make a certain magnitude of voltage of jointly sampling of the testing circuit in control circuit and control circuit off-line fault detection module carry out A/D conversion, then make it compare, and then can judge that A/D sampling functions goes out and whether break down.
(2) square wave output function detects: make the specific I/O pin of control circuit export pulsating wave by the program preset, make the check-out console in control circuit off-line fault detection module detect this pulse square wave, thus whether known control panel pulse output function is normal.
Below, for Fig. 6, the detection method of the control circuit off-line fault detection module of the embodiment of the present invention is described, but the present invention is not limited thereto:
(1) control circuit off-line fault detection module 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) whether identically judge that the first detection data and first detect response data;
(4) if first detects data and first to detect response data not identical, then control circuit fault is detected;
(5) if first detects data and first to detect response data identical, then the waveform of control circuit output that receives of detection check-out console, such as square wave;
(6) judge that whether the waveform (such as square wave) received is identical with predetermined waveform;
(7) if the waveform received and predetermined waveform are not identical, then control circuit fault is detected;
(8) if the waveform received is identical with predetermined waveform, then sampling is carried out to predeterminated voltage and obtain detected value U1;
(9) receive control panel and the conversion value U2 obtained that samples is carried out to predeterminated voltage;
(10) conversion value received is judged | whether U1-U2| meets preset range;
(11) if do not meet preset range, then control circuit fault is detected;
(12) if meet preset range, then detection control plate is working properly.
As an Alternate embodiments of the embodiment of the present invention, driving circuit off-line fault detection module can the drive circuit works of detector switch power supply in the following way whether normal: driving circuit off-line fault detection module presets ripple signal to driving circuit input; Accept the driving of driving circuit, detect activation result; Judge whether activation result meets and preset result; If activation result does not meet preset result, then detect driving circuit fault.
Particularly, independently driving circuit off-line fault detection module is designed in the Switching Power Supply off-line failure detector that the embodiment of the present invention provides, this detection module can have testing circuit and independently processor, also only can have testing circuit, testing result is sent to the processor of Switching Power Supply off-line failure detector.A series of quasi-square wave signal can be inputted to the driving circuit of Switching Power Supply by the testing circuit in driving circuit off-line fault detection module, and then remove with driving circuit the half-bridge circuit driving the testing circuit inside be made up of MOSFET, by detecting the level of this half-bridge circuit, judge whether driving circuit breaks down.
As an Alternate embodiments of the embodiment of the present invention, accessory power supply off-line fault detection module can the accessory power supply work of detector switch power supply in the following way whether normal: accessory power supply off-line fault detection module carries out analog to digital conversion to the VD of accessory power supply; 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 does not meet pre-set output voltage value, then judge accessory power supply fault.
Particularly, independently accessory power supply off-line fault detection module is designed in the Switching Power Supply off-line failure detector that the embodiment of the present invention provides, this detection module can have testing circuit and independently processor, also only can have testing circuit, testing result is sent to the processor of Switching Power Supply off-line failure detector.Testing circuit in accessory power supply off-line fault detection module can carry out analog to digital conversion to the VD of accessory power supply (5V, 15V ,+12V ,-12V), and transformation result is sent in processor, by comparing with the magnitude of voltage of desired output, then can judge whether accessory power supply breaks down.This accessory power supply off-line fault detection module fault detect flow process concrete can be as shown in Figure 7.
As an Alternate embodiments of the embodiment of the present invention, telecommunication circuit off-line fault detection module can the telecommunication circuit work of detector switch power supply in the following way whether normal: telecommunication circuit off-line fault detection module sends preset data by telecommunication circuit to control circuit according to preset rules; Receive the return data that control panel returns; Judge that whether return data is identical with preset data; If return data and preset data are not identical, or do not receive return data, then detect telecommunication circuit fault.
Particularly, independently telecommunication circuit off-line fault detection module is designed in the Switching Power Supply off-line failure detector that the embodiment of the present invention provides, this detection module can have testing circuit and independently processor, also only can have testing circuit, testing result is sent to the processor of Switching Power Supply off-line failure detector.In the present embodiment, the fault detection method of telecommunication circuit can adopt period answer mechanism, a cluster data is sent to the control panel (control circuit) of Switching Power Supply by making check-out console (testing circuit) timing, control panel is returned to check-out console after receiving data again, check-out console receives data compared with the data oneself sent, if the same illustrate that control panel communication function is intact, otherwise break down.
As an Alternate embodiments of the embodiment of the present invention, the Switching Power Supply off-line failure detector that the embodiment of the present invention provides can also comprise: reminding module; This reminding module, carries out alarm when pick-up unit detects Switching Power Supply fault.
Particularly, this reminding module can be voice cue module and/or display reminding module, can with each detection module one_to_one corresponding, after each detection module detects fault, corresponding reminding module is pointed out, also a reminding module only can be set, after each detection module detects fault, all be pointed out by this reminding module.The present invention does not limit this, and by the prompting of reminding module, user can know which part of Switching Power Supply has clearly occurred fault, improves detection efficiency.
As can be seen here, adopt the Switching Power Supply off-line failure detector that the embodiment of the present invention provides, by the duty of automatic decision power circuit, control circuit, accessory power supply, driving circuit, telecommunication circuit, greatly improve the off-line fault detect speed of Switching Power Supply, shorten the troubleshooting time, improve the health control ability of Switching Power Supply product.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In the description of this instructions, 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 invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineering technical personnel in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (9)
1. a Switching Power Supply off-line failure detector, is characterized in that, comprise following one of at least:
Power circuit off-line fault detection module, control circuit off-line fault detection module, driving circuit off-line fault detection module, accessory power supply off-line fault detection module, telecommunication circuit off-line fault detection module; Wherein:
Whether described power circuit off-line fault detection module is electrically connected with Switching Power Supply, normal for the first power circuit and the second power circuit work detecting described Switching Power Supply;
Whether described control circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the control circuit work detecting described Switching Power Supply;
Whether described driving circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the drive circuit works detecting described Switching Power Supply;
Whether described accessory power supply off-line fault detection module is electrically connected with described Switching Power Supply, normal for the accessory power supply work detecting described Switching Power Supply;
Whether described telecommunication circuit off-line fault detection module is electrically connected with described Switching Power Supply, normal for the telecommunication circuit work detecting described Switching Power Supply.
2. device according to claim 1, is characterized in that, described power circuit off-line fault detection module detect the first power circuit of described Switching Power Supply in the following way and the second power circuit work whether normal:
Described power circuit off-line fault detection module drives in turn to the device in described first power circuit and described second power circuit respectively;
Detect the conducting state of each device;
Receive detection signal, and judge whether testing result meets preset range;
If the testing result detecting each device all meets preset range, then detect described first power circuit and described second operating circuit normal;
If the testing result detecting arbitrary device does not meet preset range, then have the first power circuit or described second power circuit fault described in detecting.
3. device according to claim 1, is characterized in that, whether the control circuit work that described control circuit off-line fault detection module one of at least detects described Switching Power Supply is in the following way normal:
Described control circuit off-line fault detection module sends first to described control circuit and detects data;
Receive the first detection data response data that described control circuit returns;
Whether identically judge that described first detection data and described first detect response data;
If it is not identical that described first detection data and described first detect response data, then detect described control circuit fault;
With
Described control circuit off-line fault detection module detects the waveform that described control circuit exports;
Judge that whether the waveform received is identical with predetermined waveform;
If the waveform received and predetermined waveform are not identical, then detect described control circuit fault;
With
Described control circuit off-line fault detection module is carried out sampling to predeterminated voltage and is obtained detected value;
Receive described control circuit and the conversion value obtained of sampling is carried out to described predeterminated voltage;
Judge whether the absolute value of the difference of described conversion value and the described detected value received meets preset range;
If the absolute value of the difference of described conversion value and described detected value does not meet preset range, then detect described control circuit fault.
4. device according to claim 1, is characterized in that, whether the drive circuit works that described driving circuit off-line fault detection module detects described Switching Power Supply is in the following way normal:
Described driving circuit off-line fault detection module presets ripple signal to described driving circuit input;
Accept the driving of described driving circuit, detect activation result;
Judge whether described activation result meets and preset result;
If described activation result does not meet described default result, then detect described driving circuit fault.
5. device according to claim 1, is characterized in that, whether the accessory power supply work that described accessory power supply off-line fault detection module detects described Switching Power Supply is in the following way normal:
Described accessory power supply off-line fault detection module carries out analog to digital conversion to the VD of described accessory power supply;
Judge whether transformation result meets pre-set output voltage value;
If transformation result meets pre-set output voltage value, then judge that described accessory power supply is normal;
If transformation result does not meet pre-set output voltage value, then judge described accessory power supply fault.
6. device according to claim 1, is characterized in that, whether the telecommunication circuit work that described telecommunication circuit off-line fault detection module detects described Switching Power Supply is in the following way normal:
Described telecommunication circuit off-line fault detection module sends preset data by described telecommunication circuit to described control circuit according to preset rules;
Receive the return data that described control panel returns;
Judge that whether described return data is identical with described preset data;
If described return data is not identical with described preset data, or do not receive described return data, then detect described telecommunication circuit fault.
7. the device according to any one of claim 1 to 6, is characterized in that, also comprises: reminding module;
Described reminding module, carries out alarm when detecting described Switching Power Supply fault.
8. a Switching Power Supply off-line fault detection system, is characterized in that, comprising: Switching Power Supply and the Switching Power Supply off-line failure detector as described in any one of claim 1 to 7; Wherein:
Described Switching Power Supply comprises: the first power circuit, the second power circuit, control circuit, driving circuit, accessory power supply and telecommunication circuit;
Described driving circuit is electrically connected with described first power circuit, described second power circuit and described accessory power supply;
Described control circuit is electrically connected with described second power circuit, described driving circuit, described accessory power supply and described telecommunication circuit;
In Switching Power Supply off-line failure detector:
Described power circuit off-line fault detection module is electrically connected with described first power circuit and described second power circuit, for detecting described first power circuit and whether described second power circuit work is normal;
Whether described control circuit off-line fault detection module is electrically connected with described control circuit, normal for detecting described control circuit work;
Whether described driving circuit off-line fault detection module is electrically connected with described driving circuit, normal for detecting described drive circuit works;
Whether described accessory power supply off-line fault detection module is electrically connected with described accessory power supply, normal for detecting described accessory power supply work;
Whether described telecommunication circuit off-line fault detection module is electrically connected with described telecommunication circuit, normal for detecting described telecommunication circuit work.
9. system according to claim 8, is characterized in that, described Switching Power Supply is LLC resonant power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510557238.9A CN105068021B (en) | 2015-09-02 | 2015-09-02 | The offline failure detector of Switching Power Supply and system |
Applications Claiming Priority (1)
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