CN1735811A - Diagnosis system for household electric appliances - Google Patents
Diagnosis system for household electric appliances Download PDFInfo
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- CN1735811A CN1735811A CN 200380108303 CN200380108303A CN1735811A CN 1735811 A CN1735811 A CN 1735811A CN 200380108303 CN200380108303 CN 200380108303 CN 200380108303 A CN200380108303 A CN 200380108303A CN 1735811 A CN1735811 A CN 1735811A
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Abstract
A diagnosis system for household electric appliances with multiple loads (10) such as refrigerator etc. To supply power for the loads (10) through switch (20) which connects to command module (5) operationally and are controlled by electron control (30), the command module supplies power for loads (10) and interfaces (80) connecting with the loads. The system includes: voltmeter (60), to measure a first voltage (Voff) in the leadin of loads (10) under switch (20) disconnection, and to measure a second voltage (Vres, Vlamp, Vcomp) in the leadin of each load(10) under the corresponding switch (20) connection; control unit (70), to process the first voltage (Voff) and the second voltage (Vres, Vlamp, Vcomp), if the value of an arbitrary second voltage (Vres, Vlamp, Vcomp) is equal to or above the one of the first voltage (Voff), then indicating in the interface (80) that the command module (50), switch (20) as well as corresponding electron control have malfunction, then to interrupt the order of testing.
Description
Technical field
The present invention relates to a kind of being used for, on these household electrical appliance, be installed in the operational process that command module on the refrigeration appliance is determined its different load at diagnostic system such as the operational process identification fault origin of the household electrical appliance of refrigerator, refrigerator-freezer, air-conditioning etc.The present invention be more particularly directed to a kind of diagnostic system that inserts household electrical appliance and operationally link to each other with command module.
Background technology
On household electrical appliance, particularly on the electric refrigerator that refrigerator and refrigerator-freezer are determined, be provided with different equipments and load, for example, defrosting resistance, fan, electric light and compressor utilize its operational process of tele command module controls, and this tele command module is programmed, with service condition as requested, start or the different load of closing this electrical equipment carries out powered switch.On these electrical equipment, usually, utilize the DC power supply that command module is powered with different Electronic Control, and utilize the electric power system of this electric power supply is powered to this DC power supply.
Manufacturer is all the time in the different faults of paying close attention to fast, reliable recognition takes place in the operational process that is installed in the above-mentioned electrical equipment in the user family.
Notice the user and to break down in the electric operation process and when notifying the technical support of appointment, the latter is responsible for finding problem, and, address this problem by repairing or changing trouble unit.Because suitably replace the different load on command module or the appliance circuit, for example, defrosting resistance, electric fan, electric light and compressor, the defective that is that caused by the operator or that caused by equipment and appears at diagnostic phases usually all causes heavy losses to manufacturer and user, in diagnostic phases, reliable recognition fault rapidly.
The current a kind of system that is used to shorten the time of diagnosis cost and reduces the mistake that the technician causes comprises diagnostic device, develop this diagnostic device, to simulate the load of each electrical equipment model, and technician in charge should carry this diagnostic device, and technician in charge is connected to the command module of this electrical equipment with it.Then, the technician operates this diagnostic device by this way according to the predefined procedure process, so that can simulate the service condition of relevant load and the condition that check constitutes the device of command module.
This known system allows diagnosis technician in charge indication diagnostic device to carry out each checking procedure according to predefined procedure, and visible observation indication, normally be presented on the diagnostic device, expression is to the light signal of the service condition of each parts (switch etc.) test of command module, this indication verifies whether one of described parts fault have taken place and needed to replace it really.
Yet for fear of undesirable high diagnostic error rate, such diagnostic system requires skilled, careful operator that reliable diagnosis is provided.
Another defective of said system is because it only points out the service condition of command module, so require other test process to check the service condition of the different load of this appliance circuit.
Adopting another defective of the solution of this diagnostic device is that technician in charge need be carried the dedicated diagnostic device of different model electrical equipment.Under undesirable high frequency, do not having under the situation of enough diagnostic devices, the electrical equipment that check damages, thus cause in order to replace command module, and carry out unnecessary ordering.
Also have known self diagnosis comprehensive solution, it accurately points out trouble unit, for example, is arranged on the trouble unit on some electrical equipment, equipment and the equipment.Yet these solutions that directly detect magnitude of voltage are expensive, increased the final cost of electrical equipment.
Summary of the invention
In view of hitherto known defective, as mentioned above, general objects of the present invention provides a kind of diagnostic system, this diagnostic system can insert on the household electrical appliance such as refrigerator, refrigerator-freezer or air conditioner, with rapidly, operation troubles on the load on simple, the reliable recognition command module and that powered, carry the specialized equipment that links to each other with command module and need not technician in charge, the conclusion that perhaps makes him is based on to explanations observed and the different test parameters of being studied.
Another purpose of the present invention is a kind of diagnostic system that inserts on the above-mentioned electrical equipment, has the simple structure of lower cost of suggestion.
This diagnostic system relates to such as refrigerator, refrigerator-freezer and air conditioner, is provided with the refrigeration appliance such as the load of compressor, defrosting resistance, electric light etc., by the switch that each Electronic Control that is operably connected to command module is controlled this load is powered, this command module is to load and coupled interface power supply.
According to an aspect of the present invention, this diagnostic system comprises: voltage table, be operably connected to the inlead of each load, thereby under the situation that switch disconnects, measure first voltage on the inlead of loading, and under the situation of respective switch closure, measure second voltage on the inlead of each load; Control module, be operably connected to command module and voltage table, and it is according to the testing sequence operation of selecting to start, to receive the value of first voltage and each second voltage from voltage table, then, handle these values, if any second voltage has equaling or is higher than the value of the value of first voltage, then on interface, point out command module, switch with and at least one element of determining of respective electronic control have fault.In this case, control module can optionally interrupt this testing sequence.
Description of drawings
Referring now to description of drawings the present invention, accompanying drawing illustrates the possibility mode of the present invention that realizes, wherein:
Fig. 1 is the sketch of the operative relationship between the load of command module, refrigerator or refrigerator-freezer and this diagnostic system that is provided with control module;
Fig. 2 is the sketch of voltage table that is operably connected to the load of control module and refrigerator electrical equipment;
Fig. 3 is in order to carry out between diagnostic period obtaining magnitude of voltage and to this magnitude of voltage being handled the block scheme of the sequence of operation that control module is determined;
Fig. 4 is the block scheme in the definite sequence of operation of the step control module that obtains magnitude of voltage;
Fig. 5 is and the similar block scheme of block scheme shown in Figure 4, but shows may changing of sequence of operation in obtaining the step of magnitude of voltage;
Fig. 6 is the block scheme in the processing sequence of operation of the step control module of the service condition of check command module;
Fig. 7 is and the similar block scheme of block scheme shown in Figure 6, but shows may changing of sequence of operation in the step of the condition of check command module; And
Fig. 8 and 9 is the service conditions at the load of check refrigerator electrical equipment, the two kinds of block schemes that may handle sequence of operation of the step control module of diagnosing with submission.
Embodiment
As shown in the figure and as mentioned above, this diagnostic system is applied to the household electrical appliance such as refrigerator-freezer etc., these household electrical appliance have different load 10, for example, its form can be compressor, electric light, defrosting resistance etc., and, according to the service requirement of electric refrigerator, utilization and its can be operated each switch 20 of each Electronic Control 30 operation that links to each other, realize utilizing ac power system to start it, it is powered.
Be arranged in parallel Electronic Control, and utilize 40 pairs of these Electronic Control of power supply that link to each other with described ac power system to carry out direct current supply usually.
In the illustrative embodiment that is described below, the bulb inside (electric light) in the compressor of electric refrigerator, defrosting resistance and the cabinet is determined load 10.If in forced draft (frostless) type electric refrigerator, have electric fan, then this electric fan can have its service condition, at this, also utilize its service condition of same process diagnosis, and described electric fan operationally is included in the determined load, require this load true(-)running, test to utilize this diagnostic system.
According to a first aspect of the invention, this diagnostic system comprises: voltage table 60, by power supply 40 power supplies, and be operably connected to each load inlead of 10, with predetermined running order according to test, under the different service conditions of the electronic switch 20 that control module 70 is determined automatically, measure the voltage that different load is applied, as mentioned above.
As shown in Figure 2, voltage table 60 comprises circuit for signal conditioning 61, this circuit for signal conditioning 61 is connected to each load inlead of 10, and each load 10 is positioned at upstreams of each switch 20 and the voltage signal of 10 the described inlead of will loading is applied to the AD transducer that links to each other with control module 70.
In an example shown, utilize resitstance voltage divider, utilize signal rectification diode and signal filtering capacitor to form circuit for signal conditioning 61, this resitstance voltage divider check " n " individual inlead corresponding with the quantity of the load that will diagnose (being 3 inleads under present case) is to be adjusted to inlead AC voltage the level that AD transducer 62 requires.
Circuit for signal conditioning further comprises the assembly of resistor 63, and this resistor 63 is in parallel with load 10 respectively, to guarantee when disconnecting them, is enough to keep predetermined voltage on the circuit to 10 power supplies of loading.
Utilize regulating circuit to regulate the voltage signal that obtains from 10 the inlead of loading, then, it is delivered to AD transducer 62, and deliver to control module 70 thus.
According to the automatic operation order that the technician who is responsible for diagnosis starts, the magnitude of voltage that 70 pairs of voltage tables of control module 60 detect is handled.In order to start diagnostic procedure, the technician is cut off the power supply to electric refrigerator, then, again be linked in sequence them, so that use in technical support only under the situation of predetermined password, start electronic control unit 70 in follow-up short time interval of 1 minute being no more than usually, by voltage table 60 and command module 50, the test run order that startup will be automatically performed by control module 70.
In typical test run order shown in Figure 4, the step below before obtaining magnitude of voltage, carrying out:
● disconnect all switches 20;
● wait for through the specific shortest time, for example, about 5 seconds, then, under the situation that switch 20 disconnects, measure and write down supply voltage Voff corresponding to the magnitude of voltage on the inlead of all loads 10;
● the switch 20 of closed defrosting resistance;
● wait for through the specific shortest time, then, the magnitude of voltage Vres on the inlead of measurement and record defrosting resistance;
● disconnect the switch 20 of defrosting resistance;
● the switch 20 of closed electric light;
● wait for through the specific shortest time, then, the magnitude of voltage Vlamp on the inlead of measurement and record electric light;
● disconnect the switch 20 of electric light;
● the switch 20 of closed compressor;
● wait for through the specific shortest time, then, the second magnitude of voltage Vlamp on the inlead of measurement and recording compressed machine, the switch 20 of this compressor is closed; And
● the switch of compressor is remained closed.
If at the same time under the situation of closed its respective switch 20, require to obtain together the magnitude of voltage on the inlead of per two or per three loads 10, then only need be after obtaining the second voltage Vres of corresponding load 10, Vlamp, Vcomp, before cut-off switch 20, Closing Switch 20 and measure and write down magnitude of voltage on the inlead of these two or three load 10 finds that the switch of these two or three loads 10 is closed simultaneously together.Should be noted that the load 10 that links together in order to carry out combined measurement is the loads that can power simultaneously on household electrical appliance.
In typical test operation order shown in Figure 5, the step below before obtaining magnitude of voltage, carrying out:
● disconnect all switches 20;
● wait for through the specific shortest time, for example, about 5 seconds, then, under the situation that switch 20 disconnects, measure and write down the first voltage Voff corresponding to the magnitude of voltage on the inlead of all loads 10;
● the switch 20 of closed defrosting resistance;
● wait for through the specific shortest time, then, the magnitude of voltage on the inlead of measurement and record defrosting resistance;
● the switch 20 of closed electric light;
● wait for through the specific shortest time, then, the magnitude of voltage Vres_Vlamp on the inlead of measurement and record defrosting resistance and electric light;
● disconnect the switch 20 of defrosting resistance;
● wait for through the specific shortest time, then, the second magnitude of voltage Vlamp on the inlead of measurement and record electric light;
● the switch 20 of closed compressor;
● wait for through the specific shortest time, then, the magnitude of voltage Vres_Vcomp on the inlead of measurement and record electric light and compressor;
● disconnect the switch 20 of electric light;
● wait for through the specific shortest time, then, the magnitude of voltage Vcomp on the inlead of measurement and recording compressed machine;
● the switch 20 of compressor is remained closed;
In case disconnect in respective switch 20, closed and do not selecting under the condition of closure on the same group, write down the magnitude of voltage on 10 the inlead of loading, the processing stage that control module 70 just starting second, Fig. 6 dynamically illustrates this second the processing stage, and this purpose second processing stage is the operating conditions of the circuit board (plate) of check valve 20, Electronic Control 30 and command module 50, and the circuit board of command module 50 also carries Electronic Control 30 and switch 20.
According to Fig. 6, stage of circuit board of check command module comprises and will exist the first voltage Voff on the inlead of each load 10 of the respective switch 20 that is under the disconnection condition and existence is on the inlead of described load 10 of the respective switch 20 under the closure state on it the second voltage Vres, Vlamp, Vcomp to compare it on, then, point out whether the first voltage Voff is higher than the second voltage Vres, Vlamp, the Vcomp on the inlead of the corresponding load 10 under the situation at switch closure connecing 80.If all satisfy this condition on all loads 10, then disposal system thinks that all each switches 20 and the Electronic Control 30 of command module 50 are all in shape, because switch 20 or its associated electrical control 30 do not detect fault.
If with the first voltage Voff and load 10 the second voltage Vres, the arbitrary steps that Vlamp, Vcomp compare, value for expectation, detect different condition, promptly, its value equals or is higher than second voltage of first voltage, and then control module 70 is pointed out to exist at interface 80 unusual, points out to have fault on one of each parts of the circuit board of command module 50, therefore, change described parts.In this case, finish this diagnostic procedure, because can not continue to utilize command module 50 safety tests load 10.Be lower than the second voltage Vres, Vlamp, Vcomp if suppose the first voltage Voff, then control module 70 will produce prompting on interface 80, and the problem of pointing out neither appears at and also do not appear on the command module 50 on the parts that switch 20 and each Electronic Control 30 determine.
On Fig. 7 in the accompanying drawings, the another kind of structure of the sequence of operation of check command module 50 is shown.In this structure, the checkout procedure of the circuit board of command module 50 comprises determines to be lower than the first step of the limiting voltage Vlim of the first voltage Voff as safety value.In realizing possibility mode of the present invention, ultimate value Vlim is near 87.5% of the value of equaling Voff.
In case determined limiting voltage value Vlim, checkout procedure just comprises that the second voltage Vres, Vlamp, Vcomp and the described limiting voltage Vlim that will have on it on inlead of load 10 of each switch 20 that is under the closure state compare in proper order, and points out arbitrary limiting voltage Vlim that whether is higher than of the second voltage Vres, Vlamp, Vcomp at interface 80.
If this thing happens on load 10 arbitrary, then this disposal system is thought and is had fault can operating on the parts of command module 50 that relevant and its second voltage is higher than limiting voltage Vlim with load 10.In this case, also do not interrupt diagnostic procedure, these are different with the process that sequence of operation shown in Figure 6 is described.
That supposes the second voltage Vres, Vlamp, Vcomp arbitraryly is lower than or equals limiting voltage Vlim, then control module 70 can produce a prompting on interface 80, the problem of pointing out does not promptly occur on the command module 50, does not occur on the definite parts of switch 20 and respective electronic control yet.
In example shown in Figure 7, provide a kind of additional sequence that is used to check command module 50, shown in the bottom of this figure.According to described sequence of operation, first treatment step is provided,, determines the first low processes voltage Vproc1 of second voltage than first load 10 at this first treatment step, in this example, utilize the second voltage Vlamp on the inlead of electric light to represent this second voltage.In realizing mode of the present invention, the first processes voltage Vproc1 is equivalent to first load, that is, and and about 87.5% of the value of the second voltage Vlamp on the inlead of electric light.Therefore, utilize control module 70 to carry out following step:
● check second load 10, for example, whether the second voltage Vcomp of compressor is lower than the first voltage Voff, whether the switch 20 of first load 10 that electric light is determined is effective, and whether the second voltage Vlamp_Vcomp on the inlead of first load 10 represented of second load 10 represented of compressor and electric light is lower than the first processes voltage Vproc1;
● utilize control module 70, point out whether to satisfy above-mentioned 3 conditions at interface 80, supposition at last is created in in-problem indication on the switch 20 of second load 10 that compressor represents;
● whether the second voltage Vres of the 3rd load 10 that check defrosting resistance is represented is lower than the first voltage Voff, the switch of first load 10 that electric light is represented 20 whether effectively and the second voltage Vres_Vlamp on the inlead of the 3rd and first load 10 represented of defrosting resistance and electric light whether be lower than the first processes voltage Vproc1;
● utilize control module 70, point out whether to satisfy above-mentioned 3 conditions at interface 80, supposition at last is created in in-problem indication on the 3rd load 10 the switch 20 that defrosting resistance represents;
● the second processes voltage Vproc2 of the second voltage Vcomp low 12.5% of second load 10 that the about ratio piston compressor of record is represented on control module 70;
● whether first load, 10 the second voltage Vlamp that the check electric light is represented is lower than the first voltage Voff, the switch of second load 10 that compressor is represented 20 whether effectively and the second voltage Vlamp_Vcomp on the inlead of second and first load 10 represented respectively of compressor and electric light whether be lower than the second processes voltage Vproc2;
● utilize control module 70, point out whether to satisfy above-mentioned 3 conditions at interface 80, supposition at last is created in in-problem indication on the switch 20 of first load 10 that electric light represents;
This conversion process shown in Figure 7 can safer check command module 50 operation, even consider the voltage generation marked change that power-supply system applies.After switch 20 and Electronic Control 30 are finished the checked operation of command module 50, do not finding under the situation of fault, according to utilize with its on switch 20 be in two kinds of different operatings that the result of the second relevant voltage Vres of load 10 closure state under, comparison step that Vlamp, Vcomp compare determines automatically one of in proper order, control module 70 begins to handle the testing sequence of different load 10.
If each second voltage of supposition different load 10 equates or is equal substantially, then utilize first sequence of operation shown in Figure 3 and that in Fig. 7, be shown in further detail, control module 70 starts the test of load 10.In this first sequence of operation, whether the control module 70 checking first voltage Voff (each switch is disconnected) are greater than special datum magnitude of voltage Vref, and in this example, this reference voltage value Vref is 1.3V.If this thing happens, think that then all loads are all in shape, 10 be under the suitable service condition because if load, then reference voltage V ref represents to be higher than it and forces and utilize the particular safety coefficient to determine the magnitude of voltage of the first voltage Voff.
Therefore, if the detected first voltage Voff (each switch is disconnected) is higher than reference voltage V ref, then can think really correct closed all loads, that is, all loads all are under the suitable service condition.
On the other hand, if control module 70 detect be equal to or less than shown in the first voltage Voff of reference value, then indicate interface 80 to point out that all loads 10 all are disconnected.At this, should be noted that the not short circuit on the detection load 10 of this diagnostic system.If suppose the value difference of the second voltage Vres, Vlamp, Vcomp, then control module 70 starts second operation order of Road test, shown in the schematic diagram of Fig. 9, its objective is which load of identification disconnects, and therefore, shows fault.
This of Road test second operation comprises several steps in proper order, basically each step all compares the second voltage Vres, Vlamp, Vcomp and the specific minimum voltage Vmin of each load 10 (during switch 20 closures), for example, this minimum voltage Vmin can be equivalent to voltage obtain stage record the minimum second voltage Vres, Vlamp, Vcomp value about 75%.
Therefore, if the value of any second voltage Vres that measures on load 10 inlead, Vlamp, Vcomp is equal to or is lower than minimum value Vmin, then the control module instruction that will be used to discern the disconnection (fault) of described load sends to interface 80.If the step of the service condition of check load 10 determines that this load is qualified, then control module 70 enters the next procedure of the condition of another load of check, need not point out on the interface 80 that this load or that load are under the eligible state.After finishing each step of the situation of checking each load 10, control module 70 directive command modules 50 normal these electric refrigerators of operation.
In order to carry out new diagnostic procedure, technician in charge can be pressed the key on the electrical equipment, disconnect with power-supply system perhaps, wait for certain time, up to compressor start, then, he reconnects this electrical equipment, and, start diagnostic procedure with the instruction that utilizes control module 70 at the fixed time with specific password input command module 50.
Claims (13)
1, a kind of be used to have a plurality of loads (10) type such as refrigerator, the diagnostic system of the household electrical appliance of refrigerator-freezer etc., by the switch (20) that each Electronic Control (30) that is operably connected to command module (50) is controlled these a plurality of loads (10) are powered, this command module is to load (10) and coupled interface (80) power supply, it is characterized in that, it comprises: voltage table (60), be operably connected to the inlead of each load (10), thereby under the situation that switch (20) disconnects, first voltage (Voff) on the inlead of measurement load (10), and under the closed situation of respective switch (20), measure the second voltage (Vres on the inlead of each load (10), Vlamp, Vcomp); Control module (70), be operably connected to command module (50) and voltage table (60), and it is according to the testing sequence operation of selecting to start, to receive first voltage (Voff) and each second voltage (Vres from voltage table (60), Vlamp, Vcomp) value, then, handle these values, if any second voltage (Vres, Vlamp, Vcomp) have equaling or be higher than the value of the value of first voltage (Voff), then on interface (80), point out command module (50), switch (20) with and at least one element of determining of respective electronic control (30) have fault.
2, diagnostic system according to claim 1, it is characterized in that, control module (70) operation, with under the situation of respective switch (20) while closure, the value of every pair second voltage (Vres_Vlamp) of further two loads of sequential processes (10), if any second voltage (Vres, Vlamp, Vcomp) of each load (10) has equaling or is higher than the value of the ultimate value (Vlim) lower than first voltage (Voff), and if its switch (20) by every couple second voltage (Vres_Vlamp of simultaneously closed two loads (10); Vlamp_Vcomp) have equaling or be higher than the low processes voltage (Vproc1 of second voltage that is positioned at not tested described two loads (10) of the starter gear of command module (50) than it, Vproc2), then pointing out on one of definite element of command module (50), switch (20) and respective electronic control (30) thereof, to have fault at least on the interface (80), and interrupting this testing sequence.
3, diagnostic system according to claim 2 is characterized in that, the value of limiting voltage (Vlim) be equivalent to first voltage (Voff) value about 87.5%.
4, diagnostic system according to claim 2, it is characterized in that, processes voltage (Vproc1, value Vproc2) be equivalent to simultaneously closed from its each switch (20), as not test its starter gear that is arranged in command module (50) two loads (10) selection described load (10) second load (Vres, Vlamp, Vcomp) about 87.5%.
5, according to the arbitrary described diagnostic system of claim 1 or 2, it is characterized in that, pointing out on the interface (80) after there is fault in any element that command module (50), switch (20) and Electronic Control (30) are determined in service, on electric refrigerator, control module (70) makes command module (50) return normal operating mode.
6, according to the arbitrary described diagnostic system of claim 1 or 2, it is characterized in that, second voltage of measuring at voltage table (60) (Vres, Vlamp, Vcomp) is lower than first voltage (Voff), and the latter is when being higher than reference voltage (Vref), this reference voltage is equivalent to be higher than it and just forces first voltage (Voff) to be positioned at the magnitude of voltage of the true(-)running condition of load (10), and control module (70) is pointed out not break down on this load (10) at interface (80).
7, diagnostic system according to claim 6, it is characterized in that, only after control module (70) compared second voltage (Vres, Vlamp, Vcomp) mutually and verify that they equate that the latter equates substantially, control module (70) compared first voltage (Voff) and reference voltage (Vref).
8, diagnostic system according to claim 6, it is characterized in that, when corresponding second voltage (Vres, Vlamp, Vcomp) is higher than minimum voltage (Vmin), control module (70) is pointing out there is fault on arbitrary load (10) on the interface (80), this minimum voltage (Vmin) is lower than minimum second voltage (Vres, Vlamp, Vcomp) on the inlead of closed each load (10) of its respective switch (20).
9, diagnostic system according to claim 8 is characterized in that, the value of minimum voltage (Vmin) be equivalent to approximately minimum second voltage (Vres, Vlamp, Vcomp) value 75%.
10, diagnostic system according to claim 8, it is characterized in that, only described second voltage (Vres, Vlamp, Vcomp) is being compared mutually, and verify they unequal after, control module (70) compares second voltage (Vres, Vlamp, Vcomp) and minimum voltage (Vmin) respectively.
11, diagnostic system according to claim 1, it is characterized in that, voltage table (60) comprises circuit for signal conditioning (61), it is connected to the inlead of each load (10) of the upstream that is positioned at respective switch (20), and it delivers to control module (70) with voltage signal from the described inlead of each load (10).
12, diagnostic system according to claim 11 is characterized in that, the voltage signal on the inlead of will load (10) is delivered to the AD transducer (62) that links to each other with control module (70).
13, diagnostic system according to claim 1 is characterized in that, if the value of any second voltage (Vres, Vlamp, Vcomp) equals or be higher than the value of first voltage (Voff), then control module (70) interrupts this testing sequence.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI02054701 | 2002-12-05 | ||
| BR205470 | 2002-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1735811A true CN1735811A (en) | 2006-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200380108303 Pending CN1735811A (en) | 2002-12-05 | 2003-12-02 | Diagnosis system for household electric appliances |
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| CN (1) | CN1735811A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529343A (en) * | 2013-03-27 | 2014-01-22 | Tcl集团股份有限公司 | Intelligent diagnosing method and system of electrical device |
| WO2014040310A1 (en) * | 2012-09-12 | 2014-03-20 | 成都光码智能科技有限公司 | Device and method for monitoring operating condition of equipment based on reverse carnot principle |
| CN103837755A (en) * | 2012-11-22 | 2014-06-04 | 海尔集团公司 | Refrigerator component fault detection method and system |
| WO2019140901A1 (en) * | 2018-01-22 | 2019-07-25 | 格力电器（武汉）有限公司 | Load state detection method, device and circuit, and air conditioner controller |
-
2003
- 2003-12-02 CN CN 200380108303 patent/CN1735811A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014040310A1 (en) * | 2012-09-12 | 2014-03-20 | 成都光码智能科技有限公司 | Device and method for monitoring operating condition of equipment based on reverse carnot principle |
| CN103837755A (en) * | 2012-11-22 | 2014-06-04 | 海尔集团公司 | Refrigerator component fault detection method and system |
| CN103529343A (en) * | 2013-03-27 | 2014-01-22 | Tcl集团股份有限公司 | Intelligent diagnosing method and system of electrical device |
| CN103529343B (en) * | 2013-03-27 | 2016-04-13 | Tcl集团股份有限公司 | A kind of intelligent diagnosing method of electric equipment and system |
| WO2019140901A1 (en) * | 2018-01-22 | 2019-07-25 | 格力电器（武汉）有限公司 | Load state detection method, device and circuit, and air conditioner controller |
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