CN105004983A - Fault detection method, apparatus and system for capacitors in air conditioning set - Google Patents
Fault detection method, apparatus and system for capacitors in air conditioning set Download PDFInfo
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- CN105004983A CN105004983A CN201510491297.0A CN201510491297A CN105004983A CN 105004983 A CN105004983 A CN 105004983A CN 201510491297 A CN201510491297 A CN 201510491297A CN 105004983 A CN105004983 A CN 105004983A
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- conditioner set
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Abstract
The invention discloses a fault detection method, apparatus and system for capacitors in an air conditioning set. The method is carried out as follows. A current transformer acquires in real time the electric signals across the capacitor lines of the air conditioning set. According to the electric signals, the method judges whether a capacitor fault occurs in the air conditioning set. If any, the fault type is determined. The method is capable of detecting faults of capacitors in an air conditioning set in real time, which makes it possible for an air conditioning set to run without faults.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of capacitive faults detection method for air-conditioner set, device and system.
Background technology
Electric capacity is the critical component of electric motor starting in air-conditioner set, and when there is the capacitive faults such as open circuit, short circuit when electric capacity, motor speed can decline rapidly, and motor temperature can rise rapidly, will affect electrical machinery life time serious.The problems such as capacitive faults also can cause the system pressure of air-conditioner set excessive, and there is great electrical safety hidden danger.Therefore, how realizing searching and getting rid of the capacitive faults of air-conditioner set promptly and accurately, is the important prerequisite ensureing that air-conditioner set normally runs.
For above-mentioned problem, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of capacitive faults detection method for air-conditioner set, device and system, at least to solve the technical matters cannot carrying out fault detect in real time to the electric capacity of air-conditioner set.
According to an aspect of the embodiment of the present invention, provide a kind of capacitive faults detection method for air-conditioner set, comprising: by the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set; Judge whether above-mentioned air-conditioner set capacitive faults occurs according to above-said current signal, and determine the type of above-mentioned capacitive faults.
Further, judge whether above-mentioned air-conditioner set capacitive faults occurs according to above-said current signal, and determine that the type of above-mentioned capacitive faults comprises: judge whether to collect above-said current signal; If do not collect above-said current signal, then judge that above-mentioned capacitive faults occurs above-mentioned air-conditioner set, and determine that the type of above-mentioned capacitive faults is capacitance open circuit fault; If collect above-said current signal, ratio based on the magnitude of voltage of the current time indicated by above-said current signal and the magnitude of voltage of previous moment determines whether above-mentioned air-conditioner set the fault of capacitance short-circuit type occurs, wherein, above-mentioned previous moment and above-mentioned current time interval preset time period.
Further, determine that the fault whether above-mentioned air-conditioner set capacitance short-circuit type occurs comprises based on the ratio of the magnitude of voltage of the current time indicated by above-said current signal and the magnitude of voltage of previous moment: judge whether the ratio of the magnitude of voltage of above-mentioned current time and the magnitude of voltage of above-mentioned previous moment exceedes predetermined threshold value; If the ratio of the magnitude of voltage of the magnitude of voltage of above-mentioned current time and above-mentioned previous moment exceedes above-mentioned predetermined threshold value, then judge whether the windscreen relay of above-mentioned air-conditioner set sends shifting commands in above-mentioned previous moment; If the windscreen relay of above-mentioned air-conditioner set does not send above-mentioned shifting commands in above-mentioned previous moment, then judge the fault of above-mentioned air-conditioner set generation capacitance short-circuit type; If the windscreen relay of above-mentioned air-conditioner set sends above-mentioned shifting commands in above-mentioned previous moment, then judge that above-mentioned capacitive faults does not occur above-mentioned air-conditioner set.
Further, judging according to above-said current signal whether above-mentioned air-conditioner set capacitive faults occurs, and after determining the type of above-mentioned capacitive faults, above-mentioned capacitive faults detection method also comprises: when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, disconnect the motor power of above-mentioned air-conditioner set.
Further, judging according to above-said current signal whether above-mentioned air-conditioner set capacitive faults occurs, and after determining the type of above-mentioned capacitive faults, above-mentioned capacitive faults detection method also comprises: when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, show the failure message of above-mentioned capacitive faults on the display panel.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of capacitive faults pick-up unit for air-conditioner set, comprising: acquisition module, the electric signal on the capacitor lines passing through current transformer Real-time Collection air-conditioner set; Processing module, for judging according to above-said current signal whether above-mentioned air-conditioner set capacitive faults occurs, and determines the type of above-mentioned capacitive faults.
Further, above-mentioned processing module comprises: first judges submodule, collects above-said current signal for judging whether; Determining submodule, if for not collecting above-said current signal, then judging that above-mentioned capacitive faults occurs above-mentioned air-conditioner set, and determine that the type of above-mentioned capacitive faults is capacitance open circuit fault; Process submodule, if for collecting above-said current signal, the ratio based on the magnitude of voltage of the current time indicated by above-said current signal and the magnitude of voltage of previous moment determines whether above-mentioned air-conditioner set the fault of capacitance short-circuit type occurs.
Further, above-mentioned process submodule comprises: second judges submodule, and whether the ratio for the magnitude of voltage of the magnitude of voltage and above-mentioned previous moment that judge above-mentioned current time exceedes predetermined threshold value; 3rd judges submodule, if exceed above-mentioned predetermined threshold value for the ratio of the magnitude of voltage of above-mentioned current time and the magnitude of voltage of above-mentioned previous moment, then judges whether the windscreen relay of above-mentioned air-conditioner set sends shifting commands in above-mentioned previous moment; 4th judges submodule, if do not send above-mentioned shifting commands for the windscreen relay of above-mentioned air-conditioner set in above-mentioned previous moment, then judges the fault of above-mentioned air-conditioner set generation capacitance short-circuit type; 5th judges submodule, if send above-mentioned shifting commands for the windscreen relay of above-mentioned air-conditioner set in above-mentioned previous moment, then judges that above-mentioned capacitive faults does not occur above-mentioned air-conditioner set.
Further, above-mentioned capacitive faults pick-up unit also comprises: control module, for when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, disconnects the motor power of above-mentioned air-conditioner set.
Further, above-mentioned capacitive faults pick-up unit also comprises: display module, for when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, shows the failure message of above-mentioned capacitive faults on the display panel.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of capacitive faults detection system for air-conditioner set, comprising: current transformer, be connected on the capacitor lines of air-conditioner set, for the capacitor lines power on signal of Real-time Collection air-conditioner set; Controller, is connected with above-mentioned current transformer, for judging according to above-said current signal whether above-mentioned air-conditioner set capacitive faults occurs, and determines the type of above-mentioned capacitive faults.
Further, above-mentioned controller, also for when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, generates the control signal of the motor power disconnecting above-mentioned air-conditioner set.
Further, above-mentioned capacitive faults detection system also comprises: display board, for when above-mentioned capacitive faults occurs above-mentioned air-conditioner set, shows the failure message of above-mentioned capacitive faults.
In embodiments of the present invention, adopt the mode of the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set, then judge whether air-conditioner set capacitive faults occurs by this electric signal, and determine the type of capacitive faults, reach detection air-conditioner set in time whether capacitive faults to occur and accurately judges the object of capacitive faults type, thus achieve the technique effect ensureing air-conditioner set failure-free operation, and then solve the technical matters cannot carrying out fault detect in real time to the electric capacity of air-conditioner set.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is a kind of alternatively for the circuit diagram of the capacitive faults detection method of air-conditioner set according to the embodiment of the present invention;
Fig. 2 is a kind of alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set according to the embodiment of the present invention;
Fig. 3 is alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set according to the another kind of the embodiment of the present invention;
Fig. 4 is alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set according to another of the embodiment of the present invention;
Fig. 5 is a kind of alternatively for the schematic diagram of the capacitive faults pick-up unit of air-conditioner set according to the embodiment of the present invention;
Fig. 6 is alternatively for the schematic diagram of the capacitive faults pick-up unit of air-conditioner set according to the another kind of the embodiment of the present invention;
Fig. 7 is alternatively for the schematic diagram of the capacitive faults pick-up unit of air-conditioner set according to another of the embodiment of the present invention;
Fig. 8 is a kind of alternatively for the schematic diagram of the capacitive faults detection system of air-conditioner set according to the embodiment of the present invention;
Fig. 9 is alternatively for the schematic diagram of the capacitive faults detection system of air-conditioner set according to the another kind of the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of alternatively for the embodiment of the capacitive faults detection method of air-conditioner set, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 1 is a kind of alternatively for the circuit diagram of the capacitive faults detection method of air-conditioner set according to the embodiment of the present invention, as shown in Figure 1, this capacitive faults detection method can realize based on the capacitive faults testing circuit of same detection principles, in the circuit, electric capacity C1 is connected with current transformer L1, C2, C3, C4 are used for filtering, motor M is in normal startup or normal course of operation, current transformer L1 can detect the electric current on connected capacitor lines, and the current value detected can be converted into d. c. voltage signal or other electric signal.Be arranged at microcontroller (the Micro Controller Unit on air-conditioner set mainboard, microcontroller) analog to digital conversion interface (AD interface) can be passed through gather this d. c. voltage signal or other electric signal, and can to handle it action to this d. c. voltage signal or other electric signal.
In embodiments of the present invention, adopt the mode of the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set, then judge whether air-conditioner set capacitive faults occurs by this electric signal, and determine the type of capacitive faults, reach detection air-conditioner set in time whether capacitive faults to occur and accurately judges the object of capacitive faults type, thus achieve the technique effect ensureing air-conditioner set failure-free operation, and then solve the technical matters cannot carrying out fault detect in real time to the electric capacity of air-conditioner set.
Fig. 2 is a kind of alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set according to the embodiment of the present invention, and as shown in Figure 2, the method comprises the steps:
Step S202, by the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set;
According to electric signal, step S204, judges whether air-conditioner set capacitive faults occurs, and determines the type of capacitive faults.
Adopt the present invention, capacitor lines can connect electric capacity summation current transformer respectively, when capacitance operation, current transformer can current value in real time on Detection capacitance circuit, and this current value is converted to d. c. voltage signal or other electric signal, with the electric signal of Real-time Collection electric capacity, and judge whether air-conditioner set capacitive faults occurs based on this electric signal, and determine the capacitive faults type of air-conditioner set.
Alternatively, Fig. 3 is that as shown in Figure 3, the method comprises the steps: according to the another kind of the embodiment of the present invention alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set
Step S302, judges whether to collect electric signal;
Step S304, if do not collect electric signal, then judges air-conditioner set generation capacitive faults, and determines that the type of capacitive faults is capacitance open circuit fault.
Alternatively, if the current value detected is converted to d. c. voltage signal by current transformer, in the process of this d. c. voltage signal of Real-time Collection, whether the microcontroller be arranged on air-conditioning mainboard collects this d. c. voltage signal by any time, judges whether air-conditioner set capacitive faults occurs.If at a time, microcontroller does not collect this d. c. voltage signal, then judge that current transformer does not detect the current value on capacitor lines, and then judges air-conditioner set generation capacitive faults, and determines that the type of capacitive faults is capacitance open circuit fault.It should be noted that, the failure factor of capacitance open circuit fault has two kinds, and a kind of is that electric capacity self damages the capacitance open circuit fault caused, and another kind is that electric capacity line loosens or come off the capacitance open circuit fault caused.Microcontroller is when the type determining capacitive faults is capacitance open circuit fault, and air-conditioning maintenance personnel can distinguish Detection capacitance and capacitor lines, and then determine failure cause more accurately.
In the above embodiment of the present invention, after execution of step S302, also there is another step S360 synchronous with step S304, specific as follows:
Step S306, if collect electric signal, whether the ratio determination air-conditioner set based on the magnitude of voltage of the current time indicated by electric signal and the magnitude of voltage of previous moment there is the fault of capacitance short-circuit type.
Alternatively, if collect electric signal, then there is not capacitance open circuit fault in microcontroller determination air-conditioner set, and then the ratio determination air-conditioner set of the magnitude of voltage of current time indicated by electric signal and the magnitude of voltage of previous moment whether the fault of capacitance short-circuit type can occur.Wherein, magnitude of voltage indicated by electric signal can be the complete machine input voltage value of air-conditioner set, and current time and previous moment can for presetting set time section on the time interval, such as, this set time section is 30 seconds, then the complete machine input voltage value of the current time of microcontroller indicated by electric signal and before 30 seconds the ratio determination air-conditioner set of the complete machine input voltage value in moment whether there is the fault of capacitance short-circuit type.
Alternatively, Fig. 4 is that as shown in Figure 4, the method comprises the steps: according to another of the embodiment of the present invention alternatively for the process flow diagram of the capacitive faults detection method of air-conditioner set
Step S402, judges whether the ratio of the magnitude of voltage of current time and the magnitude of voltage of previous moment exceedes predetermined threshold value;
Step S404, if the ratio of the magnitude of voltage of the magnitude of voltage of current time and previous moment exceedes predetermined threshold value, then judges whether the windscreen relay of air-conditioner set sends shifting commands in previous moment;
Step S406, if the windscreen relay of air-conditioner set does not send shifting commands in previous moment, then judges the fault of air-conditioner set generation capacitance short-circuit type;
Alternatively, by air-conditioner set in current moment and the ratio of previous moment magnitude of voltage and the numerical values recited relation of predetermined threshold value, and then judge whether the windscreen relay of air-conditioner set sends shifting commands in this previous moment, thus can judge whether air-conditioner set capacitive faults occurs.Such as, predetermined threshold value is 1.1 and the mistiming of current time and previous moment is 30 seconds, it is 230V that microcontroller collects air-conditioning at the complete machine input voltage value of current time, and the complete machine input voltage value that microcontroller collects before reading in 30 seconds is 200V, then microcontroller calculates the ratio of air-conditioner host current time and previous moment is 1.15, be greater than predetermined threshold value 1.1, and then microcontroller reads the operation of air conditioner information of real-time storage whether the windscreen relay of searching air conditioner unit sends shifting commands in previous moment, if the windscreen relay that microcontroller inquires air-conditioner set does not send shifting commands in previous moment, then judge the fault of air-conditioner set generation capacitance short-circuit type.
In the above embodiment of the present invention, after execution of step S404, also there is another step S408 synchronous with step S406, specific as follows:
Step S408, if the windscreen relay of air-conditioner set sends shifting commands in previous moment, then judges that capacitive faults does not occur air-conditioner set.
Alternatively, when air-conditioner set generation capacitive faults, disconnect the motor power of air-conditioner set.Specifically; the motor power disconnecting air-conditioner set is actually a kind of self-protection measure of air-conditioner set, and this safeguard measure can be realized by the electric protection action or mechanical action controlling air-conditioner set by the microcontroller be arranged on air-conditioner set mainboard.The method can at air-conditioner set generation capacitive faults and undiscovered time, avoid air-conditioner set to operate with failure.
Alternatively, when air-conditioner set generation capacitive faults, the failure message of capacitive faults is shown on the display panel.Specifically, can with word on the display board of air-conditioner host, numeral, symbol, the modes such as strobe light show the failure message of capacitive faults, such as, by showing the mode of failure code on the display board of air-conditioner host, to the concrete failure condition that air-conditioning maintenance personnel point out air-conditioner set to occur, if the failure code presetting air-conditioner set generation open capacitance fault is " F11 ", and default air-conditioner set is short-circuited, the failure code of capacitive faults is " F12 ", when then showing " F11 " on the display board of air-conditioner host, air-conditioning maintenance personnel judge air-conditioner set generation open capacitance fault by reading code.
In embodiments of the present invention, adopt the mode of the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set, then judge whether air-conditioner set capacitive faults occurs by this electric signal, and determine the type of capacitive faults, reach detection air-conditioner set in time whether capacitive faults to occur and accurately judges the object of capacitive faults type, thus achieve the technique effect ensureing air-conditioner set failure-free operation, and then solve the technical matters cannot carrying out fault detect in real time to the electric capacity of air-conditioner set.
Embodiment 2
According to another aspect of the embodiment of the present invention, additionally provide a kind of capacitive faults pick-up unit for air-conditioner set, as shown in Figure 5, this capacitive faults pick-up unit comprises:
Acquisition module 501, the electric signal on the capacitor lines passing through current transformer Real-time Collection air-conditioner set;
Processing module 502, for judging according to electric signal whether air-conditioner set capacitive faults occurs, and determines the type of capacitive faults.
Alternatively, capacitor lines can connect electric capacity summation current transformer respectively, and electric capacity is when normally running, and current transformer can current value in real time on Detection capacitance circuit, and this current value is converted to d. c. voltage signal or other electric signal.Therefore, acquisition module 501 can this d. c. voltage signal of Real-time Collection or other electric signal, according to this electric signal, processing module 502 judges whether air-conditioner set capacitive faults occurs, and based on the capacitive faults type of this d. c. voltage signal or other electric signal determination air-conditioner set.
Alternatively, processing module 502 comprises:
First judges submodule, collects electric signal for judging whether;
Determining submodule, if for not collecting electric signal, then judging air-conditioner set generation capacitive faults, and determine that the type of capacitive faults is capacitance open circuit fault;
Process submodule, if for collecting electric signal, whether the ratio determination air-conditioner set based on the magnitude of voltage of the current time indicated by electric signal and the magnitude of voltage of previous moment there is the fault of capacitance short-circuit type.
Alternatively, if the current value detected is converted to d. c. voltage signal by current transformer, in the process of this d. c. voltage signal of Real-time Collection, whether the microcontroller be arranged on air-conditioning mainboard collects this d. c. voltage signal by any time, judges whether air-conditioner set capacitive faults occurs.If at a time, microcontroller does not collect this d. c. voltage signal, then first judges that submodule judges that current transformer does not detect the current value on capacitor lines, determine submodule and then judge air-conditioner set generation capacitive faults, and determine that the type of capacitive faults is capacitance open circuit fault.It should be noted that, the failure factor of capacitance open circuit fault has two kinds, and a kind of is that electric capacity self damages the capacitance open circuit fault caused, and another kind is that electric capacity line loosens or come off the capacitance open circuit fault caused.Microcontroller is when the type determining capacitive faults is capacitance open circuit fault, and air-conditioning maintenance personnel can distinguish Detection capacitance and capacitor lines, and then determine failure cause more accurately.
Alternatively, if collect electric signal, then process submodule determination air-conditioner set and capacitance open circuit fault does not occur, and then the ratio determination air-conditioner set of the magnitude of voltage of current time indicated by electric signal and the magnitude of voltage of previous moment whether the fault of capacitance short-circuit type can occur.Wherein, magnitude of voltage indicated by electric signal can be the complete machine input voltage value of air-conditioner set, and current time and previous moment can for presetting set time section on the time interval, such as, this set time section is 30 seconds, then whether the complete machine input voltage value processing the current time of submodule indicated by electric signal, with the ratio determination air-conditioner set of 30 seconds complete machine input voltage values in moment before, the fault of capacitance short-circuit type occurs.
Alternatively, process submodule to comprise:
Second judges submodule, and whether the ratio for the magnitude of voltage of the magnitude of voltage and previous moment that judge current time exceedes predetermined threshold value;
3rd judges submodule, if exceed predetermined threshold value for the ratio of the magnitude of voltage of current time and the magnitude of voltage of previous moment, then judges whether the windscreen relay of air-conditioner set sends shifting commands in previous moment;
4th judges submodule, if do not send shifting commands for the windscreen relay of air-conditioner set in previous moment, then judges the fault of air-conditioner set generation capacitance short-circuit type;
5th judges submodule, if send shifting commands for the windscreen relay of air-conditioner set in previous moment, then judges that capacitive faults does not occur air-conditioner set.
Alternatively, second judge submodule by air-conditioner set in current moment and the ratio of previous moment magnitude of voltage and the numerical values recited relation of predetermined threshold value, 3rd judges submodule and then judges whether the windscreen relay of air-conditioner set sends shifting commands in this previous moment, and the 4th judges that submodule and the 5th judges submodule thus can judge whether air-conditioner set capacitive faults occurs.Such as, predetermined threshold value is 1.1 and the mistiming of current time and previous moment is 30 seconds, it is 230V that microcontroller collects air-conditioning at the complete machine input voltage value of current time, and the complete machine input voltage value that microcontroller collects before reading in 30 seconds is 200V, then microcontroller calculates the ratio of air-conditioner host current time and previous moment is 1.15, second judges that submodule judges that this ratio is greater than predetermined threshold value 1.1, and then microcontroller reads the operation of air conditioner information of real-time storage and inquires about and judge that submodule judges whether the windscreen relay of air-conditioner set sends shifting commands in previous moment by the 3rd, if the 3rd judges that submodule judges that the windscreen relay of air-conditioner set does not send shifting commands in previous moment, then the 4th judges that submodule judges the fault of air-conditioner set generation capacitance short-circuit type.
Alternatively, as shown in Figure 6, this capacitive faults pick-up unit also comprises:
Control module 601, for when air-conditioner set generation capacitive faults, disconnects the motor power of air-conditioner set.
Alternatively; disconnect a kind of self-protection measure that the motor power of air-conditioner set is actually air-conditioner set, this safeguard measure can control the electric protection action of air-conditioner set by the microcontroller be arranged on air-conditioner set mainboard by control module 601 or mechanical action realizes.The method can at air-conditioner set generation capacitive faults and undiscovered time, avoid air-conditioner set to operate with failure.
Alternatively, as shown in Figure 7, this capacitive faults pick-up unit also comprises:
Display module 701, for when air-conditioner set generation capacitive faults, shows the failure message of capacitive faults on the display panel.
Alternatively, can with word on the display board of air-conditioner host by display module 701, numeral, symbol, the modes such as strobe light show the failure message of capacitive faults, such as, by showing the mode of failure code on the display board of air-conditioner host, to the concrete failure condition that air-conditioning maintenance personnel point out air-conditioner set to occur, if the failure code presetting air-conditioner set generation open capacitance fault is " F11 ", and default air-conditioner set is short-circuited, the failure code of capacitive faults is " F12 ", when then showing " F11 " on the display board of air-conditioner host, air-conditioning maintenance personnel judge air-conditioner set generation open capacitance fault by reading code.
According to another aspect of the embodiment of the present invention, additionally provide a kind of capacitive faults detection system for air-conditioner set, as shown in Figure 8, this capacitive faults detection system comprises:
Current transformer 801, is connected on the capacitor lines of air-conditioner set, for the capacitor lines power on signal of Real-time Collection air-conditioner set;
Controller 802, is connected with current transformer, for judging according to electric signal whether air-conditioner set capacitive faults occurs, and determines the type of capacitive faults.
Alternatively, controller 802, also for when air-conditioner set generation capacitive faults, generates the control signal of the motor power disconnecting air-conditioner set.
Alternatively, as shown in Figure 9, capacitive faults detection system also comprises:
Display board 901, for when air-conditioner set generation capacitive faults, the failure message of display capacitive faults.
In embodiments of the present invention, adopt the mode of the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set, then judge whether air-conditioner set capacitive faults occurs by this electric signal, and determine the type of capacitive faults, reach detection air-conditioner set in time whether capacitive faults to occur and accurately judges the object of capacitive faults type, thus achieve the technique effect ensureing air-conditioner set failure-free operation, and then solve the technical matters cannot carrying out fault detect in real time to the electric capacity of air-conditioner set.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1., for a capacitive faults detection method for air-conditioner set, it is characterized in that, comprising:
By the electric signal on the capacitor lines of current transformer Real-time Collection air-conditioner set;
Judge whether described air-conditioner set capacitive faults occurs according to described electric signal, and determine the type of described capacitive faults.
2. capacitive faults detection method according to claim 1, is characterized in that, judges whether described air-conditioner set capacitive faults occurs according to described electric signal, and determines that the type of described capacitive faults comprises:
Judge whether to collect described electric signal;
If do not collect described electric signal, then judge that described capacitive faults occurs described air-conditioner set, and determine that the type of described capacitive faults is capacitance open circuit fault;
If collect described electric signal, the ratio based on the magnitude of voltage of current time indicated by described electric signal and the magnitude of voltage of previous moment determines whether described air-conditioner set the fault of capacitance short-circuit type occurs,
Wherein, described previous moment and described current time interval preset time period.
3. capacitive faults detection method according to claim 2, is characterized in that, the ratio based on the magnitude of voltage of current time indicated by described electric signal and the magnitude of voltage of previous moment determines that the fault whether described air-conditioner set capacitance short-circuit type occurs comprises:
Judge whether the ratio of the magnitude of voltage of described current time and the magnitude of voltage of described previous moment exceedes predetermined threshold value;
If the ratio of the magnitude of voltage of the magnitude of voltage of described current time and described previous moment exceedes described predetermined threshold value, then judge whether the windscreen relay of described air-conditioner set sends shifting commands in described previous moment;
If the windscreen relay of described air-conditioner set does not send described shifting commands in described previous moment, then judge the fault of described air-conditioner set generation capacitance short-circuit type;
If the windscreen relay of described air-conditioner set sends described shifting commands in described previous moment, then judge that described capacitive faults does not occur described air-conditioner set.
4. capacitive faults detection method as claimed in any of claims 1 to 3, it is characterized in that, judging whether described air-conditioner set capacitive faults occurs according to described electric signal, and after determining the type of described capacitive faults, described capacitive faults detection method also comprises:
When described capacitive faults occurs described air-conditioner set, disconnect the motor power of described air-conditioner set.
5. capacitive faults detection method as claimed in any of claims 1 to 3, it is characterized in that, judging whether described air-conditioner set capacitive faults occurs according to described electric signal, and after determining the type of described capacitive faults, described capacitive faults detection method also comprises:
When described capacitive faults occurs described air-conditioner set, show the failure message of described capacitive faults on the display panel.
6., for a capacitive faults pick-up unit for air-conditioner set, it is characterized in that, comprising:
Acquisition module, the electric signal on the capacitor lines passing through current transformer Real-time Collection air-conditioner set;
Processing module, for judging whether described air-conditioner set capacitive faults occurs according to described electric signal, and determines the type of described capacitive faults.
7. capacitive faults pick-up unit according to claim 6, is characterized in that, described processing module comprises:
First judges submodule, collects described electric signal for judging whether;
Determining submodule, if for not collecting described electric signal, then judging that described capacitive faults occurs described air-conditioner set, and determine that the type of described capacitive faults is capacitance open circuit fault;
Process submodule, if for collecting described electric signal, the ratio based on the magnitude of voltage of current time indicated by described electric signal and the magnitude of voltage of previous moment determines whether described air-conditioner set the fault of capacitance short-circuit type occurs.
8. capacitive faults pick-up unit according to claim 7, is characterized in that, described process submodule comprises:
Second judges submodule, and whether the ratio for the magnitude of voltage of the magnitude of voltage and described previous moment that judge described current time exceedes predetermined threshold value;
3rd judges submodule, if exceed described predetermined threshold value for the ratio of the magnitude of voltage of described current time and the magnitude of voltage of described previous moment, then judges whether the windscreen relay of described air-conditioner set sends shifting commands in described previous moment;
4th judges submodule, if do not send described shifting commands for the windscreen relay of described air-conditioner set in described previous moment, then judges the fault of described air-conditioner set generation capacitance short-circuit type;
5th judges submodule, if send described shifting commands for the windscreen relay of described air-conditioner set in described previous moment, then judges that described capacitive faults does not occur described air-conditioner set.
9. according to the capacitive faults pick-up unit in claim 6 to 8 described in any one, it is characterized in that, described capacitive faults pick-up unit also comprises:
Control module, for when described capacitive faults occurs described air-conditioner set, disconnects the motor power of described air-conditioner set.
10. according to the capacitive faults pick-up unit in claim 6 to 8 described in any one, it is characterized in that, described capacitive faults pick-up unit also comprises:
Display module, for when described capacitive faults occurs described air-conditioner set, shows the failure message of described capacitive faults on the display panel.
11. 1 kinds, for the capacitive faults detection system of air-conditioner set, is characterized in that, comprising:
Current transformer, is connected on the capacitor lines of air-conditioner set, for the capacitor lines power on signal of Real-time Collection air-conditioner set;
Controller, is connected with described current transformer, for judging whether described air-conditioner set capacitive faults occurs according to described electric signal, and determines the type of described capacitive faults.
12. fault detection systems according to claim 11, is characterized in that, described controller, also for when described capacitive faults occurs described air-conditioner set, generates the control signal of the motor power disconnecting described air-conditioner set.
13. fault detection systems according to claim 11, is characterized in that, described capacitive faults detection system also comprises:
Display board, for when described capacitive faults occurs described air-conditioner set, shows the failure message of described capacitive faults.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849620A (en) * | 2016-12-30 | 2017-06-13 | 华为技术有限公司 | Voltage adjusting method, controller and chip |
| CN107270474A (en) * | 2017-06-05 | 2017-10-20 | 广东美的暖通设备有限公司 | The recognition methods of mainboard control logic, device and air-conditioning |
| CN111313373A (en) * | 2020-03-25 | 2020-06-19 | 广州华凌制冷设备有限公司 | Power supply circuit, circuit fault detection method, circuit board and vehicle-mounted air conditioner |
| CN112858792A (en) * | 2021-01-15 | 2021-05-28 | 胜达克半导体科技(上海)有限公司 | Energy storage capacitor failure detection method based on test carrier plate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1039359A2 (en) * | 1999-03-25 | 2000-09-27 | ABBPATENT GmbH | Monitoring apparatus for electric consumers |
| CN1632607A (en) * | 2004-12-30 | 2005-06-29 | 南京化工职业技术学院 | Experimental installation for failure diagnosis of air conditioner control circuit |
| CN2788205Y (en) * | 2004-12-30 | 2006-06-14 | 南京化工职业技术学院 | Air conditioner controlled circuit fault diagnosis testing device |
| EP1906190A1 (en) * | 2005-06-13 | 2008-04-02 | Ormazabal Protection & Automation, S.L. | Control/protection device for electrical distribution networks |
| CN201654164U (en) * | 2010-08-18 | 2010-11-24 | 湖南金福达电子有限公司 | Aging fault display circuit of electrolytic capacitor |
| TWM470950U (en) * | 2013-09-30 | 2014-01-21 | guo-qing Zhang | Circuit for monitoring intermittent loop insulation grounding fault |
| CN104685212A (en) * | 2012-09-25 | 2015-06-03 | 艾默生环境优化技术有限公司 | Compressor having a control and diagnostic module |
-
2015
- 2015-08-11 CN CN201510491297.0A patent/CN105004983A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1039359A2 (en) * | 1999-03-25 | 2000-09-27 | ABBPATENT GmbH | Monitoring apparatus for electric consumers |
| CN1632607A (en) * | 2004-12-30 | 2005-06-29 | 南京化工职业技术学院 | Experimental installation for failure diagnosis of air conditioner control circuit |
| CN2788205Y (en) * | 2004-12-30 | 2006-06-14 | 南京化工职业技术学院 | Air conditioner controlled circuit fault diagnosis testing device |
| EP1906190A1 (en) * | 2005-06-13 | 2008-04-02 | Ormazabal Protection & Automation, S.L. | Control/protection device for electrical distribution networks |
| CN201654164U (en) * | 2010-08-18 | 2010-11-24 | 湖南金福达电子有限公司 | Aging fault display circuit of electrolytic capacitor |
| CN104685212A (en) * | 2012-09-25 | 2015-06-03 | 艾默生环境优化技术有限公司 | Compressor having a control and diagnostic module |
| TWM470950U (en) * | 2013-09-30 | 2014-01-21 | guo-qing Zhang | Circuit for monitoring intermittent loop insulation grounding fault |
Non-Patent Citations (1)
| Title |
|---|
| 钟妙清: "空调电容器故障成因及排除方法", 《武汉船舶职业技术学院学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849620A (en) * | 2016-12-30 | 2017-06-13 | 华为技术有限公司 | Voltage adjusting method, controller and chip |
| US10394262B2 (en) | 2016-12-30 | 2019-08-27 | Huawei Technologies Co., Ltd. | Voltage regulation method, controller, and chip |
| CN106849620B (en) * | 2016-12-30 | 2019-09-13 | 华为技术有限公司 | Voltage adjusting method, controller and chip |
| CN107270474A (en) * | 2017-06-05 | 2017-10-20 | 广东美的暖通设备有限公司 | The recognition methods of mainboard control logic, device and air-conditioning |
| CN107270474B (en) * | 2017-06-05 | 2019-09-27 | 广东美的暖通设备有限公司 | The recognition methods of mainboard control logic, device and air-conditioning |
| CN111313373A (en) * | 2020-03-25 | 2020-06-19 | 广州华凌制冷设备有限公司 | Power supply circuit, circuit fault detection method, circuit board and vehicle-mounted air conditioner |
| CN111313373B (en) * | 2020-03-25 | 2022-11-29 | 广州华凌制冷设备有限公司 | Power supply circuit, circuit fault detection method, circuit board and vehicle-mounted air conditioner |
| CN112858792A (en) * | 2021-01-15 | 2021-05-28 | 胜达克半导体科技(上海)有限公司 | Energy storage capacitor failure detection method based on test carrier plate |
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