CN102809967A - Automatic detection method for control panel of air-conditioning indoor unit - Google Patents
Automatic detection method for control panel of air-conditioning indoor unit Download PDFInfo
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Abstract
The invention discloses an automatic detection method for a control panel of an air-conditioning indoor unit, and achieves the purposes that different measures are adopted to detect different functional circuits on the control panel of the indoor unit. The automatic detection method comprises the following steps: detecting a communication circuit; detecting a motor type drive circuit; detecting a sensor sampling circuit; detecting a high-low-level input type circuit; and detecting a weak current type drive circuit or a relay type circuit. By adopting the automatic detection method, damage to a to-be-detected control panel is avoided in the detecting process, qualitative detection and quantitative test of all functional circuits of the to-be-detected control panel can be achieved through both manual judgment and automatic decision, and on and off states for switching input can be both detected, so that not only is the accuracy of detection results improved and the detection efficiency is drawn into consideration.
Description
Technical field
The invention belongs to air-conditioning and Refrigeration Engineering technical field, specifically, relate to a kind of method that the indoor machine of air-conditioner control panel is detected of being used for.
Background technology
Along with warming gradually of terrestrial climate and improving constantly of people's living standard, it is day by day extensive that the air-conditioning product has progressively been come into huge numbers of families and usable range.Existing air-conditioning product generally all comprises indoor set and off-premises station two parts, no matter in indoor set still in the off-premises station, all is provided with and is used for control panel that execution unit is coordinated to control.Detect for the air-conditioning performance of products, we can say that the overwhelming majority times are detections that indoor set control panel and off-premises station control panel to the air-conditioning product are carried out.
At present, the detection method that is proposed to the indoor set control panel of air-conditioning product has a variety of, but all is the detection mode that adopts external load mainly, belong to forceful electric power and detect, and testing result mainly relies on and artificially judges that the probability that therefore produces erroneous judgement is higher.And, in testing process,, cause the fault machine to increase thus if misoperation also can produce damage to control panel to be detected, hardware cost raises.In addition; Because traditional detection scheme all is a quality of judging control panel through the actual motion state of observing the air-conditioning product; This detecting pattern can only be judged whether qualified the making qualitatively of control panel, can not do quantitative detection, therefore; Even if detect qualified control panel also not necessarily really is exactly certified products, and the accuracy existence of testing result is queried.
Summary of the invention
The object of the present invention is to provide a kind of automatic testing method of indoor apparatus of air conditioner control panel, the damage of not only having avoided testing process that control panel to be detected is caused, and improved the accuracy of testing result, taken into account detection efficiency.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved:
A kind of automatic testing method of indoor apparatus of air conditioner control panel uses the different detection means to the difference in functionality circuit on the indoor set control panel, comprises
Detection to telecommunication circuit: formulate communication protocol, send and the received communication data, whether judge correctly through the data that detection receives whether telecommunication circuit is normal;
Detection to the electric machinery driving circuit: external simulation frock plate, send pulsating wave and receive the pulsating wave of simulating frock plate feedback to simulation frock plate, judge according to the waveform of transmitting-receiving pulsating wave whether said electric machinery driving circuit is normal;
Detection to senser sampling circuit: utilize fixed resistance to replace sensor to connect said senser sampling circuit, through the processor on the indoor set control panel read sampled value and with setting value relatively, whether normal to judge said senser sampling circuit;
Detection to high-low level input type circuit: external toggle switch, whether the position of switching toggle switch has high and low two kinds of level inputs to judge whether said high-low level input type circuit is normal through detecting;
Detection to light current class driving circuit or relay class circuit: external pilot lamp, judge through control pilot lamp light on and off whether said light current class driving circuit or relay class circuit be normal.
Further; Whether in described automatic testing method, also comprise the detection to the functional indicator light circuit: the control function pilot lamp is lighted successively, is extinguished and moves in circles, light on request through the overview function pilot lamp and judge whether said functional indicator light circuit is normal.
Further again; In described automatic testing method, also comprise detection: press a good function button of chosen in advance on the telepilot to remote-control receiving circuit; The indoor set control panel is after receiving remote signal; Judge that whether the pairing function button of said remote signal conforms to preset function button, if conform to, judges that then said remote-control receiving circuit is normal.
Further again; In described automatic testing method, also comprise detection: a good function button of chosen in advance on the plate that pushes button to key control circuit; The indoor set control panel is after receiving push button signalling; Judge that whether the pairing function button of said push button signalling conforms to preset function button, if conform to, judges that then said key control circuit is normal.
Said function button is preferably set to the machine open/close button.
In said testing process to telecommunication circuit; Said telecommunication circuit comprises the telecommunication circuit that is connected with the off-premises station control panel, the telecommunication circuit that is connected with line control machine, the telecommunication circuit that is connected with computing machine and the telecommunication circuit that is connected with the indoor set display board; Each telecommunication circuit is intended frock plate, line control machine simulation frock plate, computer simulation frock plate and display board simulation frock plate with the external control template die respectively and is connected one to one the transport communication data; Each is simulated the frock plate communication data that receives is fed back to the indoor set control panel, and said indoor set control panel compares feedback data that receives and the previous communication data that sends, if unanimity judges that then telecommunication circuit is normal.
In said testing process to the electric machinery driving circuit; Said electric machinery driving circuit comprises dc fan driving circuit and PG motor-drive circuit; Connect one to one with dc fan simulation frock plate and PG motor simulation frock plate respectively; Transmission pwm pulse ripple, consistent as if the pulsating wave that sends through the electric machinery driving circuit with the waveform of its feedback pulse ripple that receives, judge that then said electric machinery driving circuit is normal.
In said testing process to high-low level input type circuit, a said high-low level input type circuit comprises AC blower fan protection feedback circuit, water level switch circuit, outside input circuit and on-off circuit, connects one to one with different toggle switchs respectively.
Preferably; A kind of preferred detection order as each functional circuit on the indoor set control panel; Said indoor set control panel after getting into self-check program, at first read functions tabulation, each item function executing listed according to feature list and the detection of the corresponding functional circuit of said each item function;
In testing process, carry out following steps successively:
(1) the pairing level state of default location to telecommunication circuit, electric machinery driving circuit, senser sampling circuit, functional indicator light circuit and high-low level input type circuit detects automatically; If it is all normal; Then carry out subsequent step; Otherwise stop testing process, and show DTC;
(2) drive relay class circuit operation, the external pilot lamp of control and relay is cycle lighting successively;
(3) control and the external pilot lamp of light current class driving circuit cycle lighting successively;
(4) display reminding information, notification technique personnel press the good function button of chosen in advance on the telepilot, if remote-control receiving circuit is normal, display reminding information then gets into the detection of key control circuit; Otherwise stop testing process, and show DTC;
(5) the good function button of chosen in advance on the plate that pushes button, if key control circuit is normal, display reminding information then, the detection that gets into high-low level input type circuit; Otherwise stop testing process, and show DTC;
(6) stir successively and the said high-low level input type mutually external toggle switch of circuit, if detect, then stop testing process, and show DTC less than high and low two kinds of level states.
Preferably, the step that the pairing level state of default location of original toggle switch detects automatically in the step (1) of said self-check program, also comprising the indoor set control panel.
Further, said indoor set control panel at first detects whether short circuit of its test interface after powering on, if short circuit then gets into described self-check program; If short circuit not, but in setting-up time, detect said test interface by short circuit, then get into the special self-check program of toggle switch, be used for original toggle switch circuit on the said indoor set control panel is detected; If in setting-up time, also do not detect described test interface, then get into normal working procedure by short circuit.
In order to realize the special self check of toggle switch circuit, after said self-check program finishes, the outage of control indoor set control panel; Switch the position of stirring of original toggle switch on the said indoor set control panel; Then to light current on the said indoor set control panel, and in setting-up time the described test interface of short circuit, the special trace routine that gets into toggle switch; If detect the level state generation saltus step of said toggle switch circuit output, judge that then said toggle switch circuit is normal; Otherwise, show DTC, if there is fault in a plurality of toggle switchs, then circulation shows each DTC.
Compared with prior art; Advantage of the present invention and good effect are: the present invention is directed to automatic testing method that the indoor machine of air-conditioner control panel proposed and not only can avoid testing process to damage that control panel to be detected caused; And through adopting artificial judgment and judging the mode that combines automatically; Can carry out qualitative detection and quantitative test to each functional circuit of control panel to be detected; And " opening " and " pass " two states for the switch input quantity all can detect, and has both improved the accuracy of testing result, has also taken into account detection efficiency simultaneously.
After the detailed description in conjunction with the advantages embodiment of the present invention, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the overall architecture synoptic diagram of the automatic detection device that is used for the indoor apparatus of air conditioner control panel is detected;
Fig. 2 A, Fig. 2 B are the program flow diagrams of a kind of embodiment of indoor apparatus of air conditioner control panel automatic testing method proposed by the invention.
Embodiment
Describe in detail below in conjunction with the accompanying drawing specific embodiments of the invention.
The mode that indoor apparatus of air conditioner control panel automatic testing method of the present invention adopts software and hardware to combine; Design the different detection strategy targetedly according to the classification of various functional circuits on the indoor set control panel and the various interface type of processor (the microprocessor MCU generally to adopt on the present air conditioner room unit control panel is that example describes); And standard in addition, the main circuit that detects has telecommunication circuit, electric machinery driving circuit, senser sampling circuit, a high-low level input type circuit, relay class circuit, light current class driving circuit, remote-control receiving circuit, key control circuit, functional indicator light circuit, buzzer drive circuit and toggle switch circuit etc.For the detection of various functional circuits, pay the utmost attention to the reliability of using simulation test frock plate and functional test procedures self, avoid testing process to treat detecting the indoor set control panel or the air conditioner complete machine causes damage.Then adopt the mode that system is judged automatically and artificial subjective judgement combines for the judgement of testing result; Pay the utmost attention to the mode that MCU judges automatically; Can't realize automatically judging; Consider to reduce to greatest extent the artificial influence of judging error, reduce the artificial difficulty of judging, as far as possible to reach the purpose of design that reduces the artificial error in judgement probability of testing result.
Wherein, being judged to be main functional circuit with manual work mainly contains: relay class circuit, light current class driving circuit, remote-control receiving circuit, key control circuit, functional indicator light circuit etc.
The functional circuit that MCU judges automatically mainly contains: telecommunication circuit, electric machinery driving circuit, senser sampling circuit, buzzer drive circuit etc.
Automatically be judged to be the master with MCU, but need artificial functional circuit of participating in to mainly contain: high-low level input type circuit, AC blower fan protection feedback circuit, toggle switch circuit etc.
Through a concrete embodiment, come to be illustrated as in detail the automatic detection that realizes the air conditioner room unit control panel and pick-up unit and the concrete testing process that designs below.
Embodiment one; Present embodiment has the scope of application of broad in order to make the indoor set control panel that is proposed detect strategy; Promptly can satisfy the detection requirement of all kinds air-conditioning product (for example commercial use air conditioner, wall-hanging air conditioner and vertical cabinet-type air conditioner etc.); Related functional circuit on all kinds indoor machine of air-conditioner control panel is taken into full account, and proposed the different detection means to the different functions circuit.
Specifically, summary is designed with following detection mode:
(1) to the detection of telecommunication circuit:
For the telecommunication circuit on the indoor set control panel; Present embodiment adopts the mode of formulating communication protocol in advance; Utilize indoor set control panel and external communication class equipment to carry out two-way communication, and then whether judge correctly according to the communication data that sends and receive whether telecommunication circuit is normal.
In the present embodiment, said external communication class evaluation method selecting optimal equipment adopts simulation frock plate to connect the telecommunication circuit on the indoor set control panel, with the auxiliary detection of accomplishing telecommunication circuit.
(2) to the detection of electric machinery driving circuit:
For the electric machinery driving circuit on the indoor set control panel; Present embodiment adopts the mode of external simulation frock plate; Utilize the indoor set control panel to send pulsating wave and receive the pulsating wave of simulating frock plate feedback, and then judge according to the waveform of the pulsating wave that receives and send whether described electric machinery driving circuit is normal to simulation frock plate.
(3) to the detection of senser sampling circuit:
For the senser sampling circuit on the indoor set control panel; Present embodiment adopts the mode of external fixed resistance; Utilize fixed resistance to replace sensor to connect described senser sampling circuit; And then the sampled value through the MCU read sensor sample circuit on the indoor set control panel, the setting value with prior preservation compares then, and whether judge said senser sampling circuit thus normal.
(4) to the detection of high-low level input type circuit:
For the input of the high-low level on the indoor set control panel type circuit; Present embodiment adopts the mode of external toggle switch; Through switching the position of toggle switch; And detect the level be input to MCU and whether comprise high level and low level two states, judge whether described high-low level input class circuit is normal.
(5) to the detection of relay class circuit:
For the relay class circuit on the indoor set control panel, for example connect the relay of AC blower fan or water pump, present embodiment adopts the mode of external pilot lamp, lights and extinguishes and judge whether described relay class circuit is normal through the control pilot lamp.
(6) to the detection of electronic expansion valve-driving circuit and other light current class driving circuits:
For the circuit that the electronic expansion valve-driving circuit on the indoor set control panel and other require light current to drive, present embodiment also preferably adopts the mode of external pilot lamp, lights successively and extinguishes and judge whether such circuit is normal through the control pilot lamp.
(7) to the detection of functional indicator light circuit:
For the functional indicator light circuit on the indoor set control panel; Need not external any auxiliary detection circuit; Only need each functional indicator light of control this control procedure of lighting successively, extinguish and move in circles; And then whether light on request through the overview function pilot lamp, whether can judge described functional indicator light circuit normal.
(8) to the detection of remote-control receiving circuit:
For the remote-control receiving circuit on the indoor set control panel, need to use the auxiliary testing process of accomplishing of air-conditioning remote control.Specifically, at first selected function button that is used to detect on telepilot preferably adopts remote control machine open/close button.When remote-control receiving circuit is detected; Preferably press the good function button of chosen in advance on the telepilot, remote control machine open/close button for example, the indoor set control panel is after receiving remote signal; Judge whether the pairing function button of said remote signal conforms to preset function button; Such as whether being remote control machine open/close button,, judge that then said remote-control receiving circuit is normal if conform to; Otherwise, judge said remote-control receiving circuit fault, reception telecommand that can not be correct.
(9) to the detection of key control circuit:
For the key control circuit on the indoor set control panel; Can copy the detection method to remote-control receiving circuit, at first selected function button that is used to detect on the indoor set keypad preferably adopts the machine open/close button; Because for dissimilar air conditioners; The indoor set that has does not have keypad (for example wall hanging machine), even if the indoor set that has has keypad, only only is provided with machine open/close button (for example some commercial use air conditioner) yet.For the detection requirement of key control circuit of the air conditioners that satisfy all band keypads, the machine open/close button that preferably adopts this type air conditioner all have is used function button as detecting, and completion is to the detection of key control circuit.
In testing process, the good function button of chosen in advance, for example machine open/close button on the plate that at first pushes button; Whether the indoor set control panel judges that whether the pairing function button of said push button signalling conforms to preset function button after receiving push button signalling, such as being the machine open/close button; If conform to, judge that then said key control circuit is normal, otherwise; Judge said key control circuit fault, can accurately not detect key command.
(10) to the detection of buzzer drive circuit:
For the buzzer drive circuit on the indoor set control panel; Can adopt the mode of external buzzer; When other functional circuits on the indoor set control panel are detected; The mode of utilizing the driving hummer to ring is exported testing result, can accomplish the detection to buzzer drive circuit in the lump thus.
In conjunction with above-mentioned detection strategy, present embodiment at first designs a kind of automatic detection device to the indoor set control panel, for the detection of each functional circuit on the indoor set control panel provides hardware supports.
Referring to shown in Figure 1, the automatic detection device that is used for the indoor apparatus of air conditioner control panel that present embodiment proposed mainly comprises simulation frock plate, fixed resistance R1, R2, toggle switch K1-K4, pilot lamp D1-D3 and hummer BZ1.Wherein, described simulation frock plate comprises the simulation frock plate and the simulation frock plate that is used to be connected the electric machinery driving circuit that is used to connect telecommunication circuit.For the telecommunication circuit on the indoor set control panel; Specifically comprise the telecommunication circuit that is used for the telecommunication circuit that is connected with the off-premises station control panel, the telecommunication circuit that is connected with line control machine, the telecommunication circuit that is connected with computing machine and is connected with the indoor set display board; Each telecommunication circuit is intended frock plate, line control machine simulation frock plate, computer simulation frock plate and display board simulation frock plate with the external control template die respectively and is connected one to one the transport communication data.For the telecommunication circuit that is connected with line control machine; Can comprise specifically being used for telecommunication circuit that is connected with the Ao Weier line control machine and the telecommunication circuit that is used for being connected that two parts telecommunication circuit connects one to one with Ao Weier line control machine simulation frock plate and HBS line control machine simulation frock plate respectively with the HBS line control machine.In the process that the each several part telecommunication circuit on the indoor set control panel is detected; At first control the each several part telecommunication circuit to the simulation frock plate output communication data external with it through the MCU on the control panel; Simulation frock plate feeds back to the indoor set control panel with said communication data former state after receiving communication data.MCU on the indoor set control panel compares the communication data of the feedback data that receives and its transmission, if consistent, judges that then telecommunication circuit is normal, otherwise, judge that telecommunication circuit is unusual.For the detection order of each several part telecommunication circuit, present embodiment is not done requirement.
For the electric machinery driving circuit on the indoor set control panel, specifically comprise dc fan driving circuit and PG motor-drive circuit, connect one to one mutual transmission pulse ripple respectively with dc fan simulation frock plate and PG motor simulation frock plate.In the testing process of present embodiment; MCU on the indoor set control panel at first drives the dc fan driving circuit and the PG motor-drive circuit is exported the PWM pulsating wave of setting dutycycle to connected simulation frock plate; For example drive dc fan driving circuit output duty cycle and be 25% pwm pulse ripple, drive PG motor-drive circuit output duty cycle and be 70% pwm pulse ripple.After said dc fan simulation frock plate and PG motor simulation frock plate receive the pwm pulse ripple that the indoor set control panel sends, the pulsating wave former state that receives is fed back to the indoor set control panel.MCU on the said indoor set control panel is behind the pulsating wave that receives simulation frock plate feedback; The pulsating wave of feedback pulse ripple that receives and transmission before it is compared; If waveform is consistent; Judge that then dc fan driving circuit and PG motor-drive circuit are normal, otherwise, judge described electric machinery driving circuit fault.For the detection order of two parts electric machinery driving circuit, present embodiment is not done requirement.
Consider in present air-conditioning product, generally all to be provided with temperature sensor and humidity sensor, be used for the temperature conditions and the humidity situation of indoor environment are detected.For temperature sensor sampling circuit on the indoor set control panel and humidity sensor sample circuit are detected; Present embodiment adopts the resistor R 1, R2 (for example precision is the fixed resistance of 1% 10K Ω) of fixed resistance value to replace temperature sensor and humidity sensor respectively, connects one to one with temperature sensor sampling circuit and humidity sensor sample circuit on the indoor set control panel.Thus one, the voltage sample value that the MCU on the indoor set control panel collects through temperature sensor sampling circuit and humidity sensor sample circuit is exactly a fixed value.Because pairing temperature value of this fixed value and humidity value can calculated in advance come out; Be kept among the MCU; Therefore after the detection starting program; MCU only needs the temperature value and the humidity value of the pairing temperature value of voltage sample value that collects and humidity value and preservation are in advance compared respectively, if consistent, just temperature sensor sampling circuit on the decidable indoor set control panel and humidity sensor sample circuit are normal; Otherwise, judge said temperature sensor sampling circuit and humidity sensor sample circuit fault.For the detection order of two parts sample circuit, present embodiment is not done requirement.
For the toggle switch K1-K4 in the automatic detection device; Be used for the indoor set control panel on a high-low level input type circuit be connected; Through stirring the position of toggle switch K1-K4, and combine detected high-low level state, come the comprehensive detection of accomplishing high-low level input type circuit.In the present embodiment; A said high-low level input type circuit comprises that specifically AC blower fan protection feedback circuit, water level switch circuit, outside input circuit and other require the on-off circuit of input high level signal, connect one to one with different toggle switch K1-K4 respectively.Before detecting beginning, at first each toggle switch K1-K4 is toggled it to default location, the pairing level state of this default location is promptly known, for example each toggle switch K1-K4 is toggled it to the position ON of acquiescence, and ON pairing level state in position is high.After detecting beginning; Whether the level state that the MCU on the indoor set control panel at first detects its each input interface that connects high-low level input type circuit is high, and level state is that the low high-low level that input interface connected an input type circuit can directly be judged to be fault; Level state is after the high high-low level that input interface connected input type circuit needs further toggle it to position OFF with connected toggle switch; If MCU receives low level; Could judge that this road high-low level input type circuit is normal; Otherwise, judge this road high-low level input type fault equally.
For the pilot lamp D1-D3 in the automatic detection device, be used for the indoor set control panel on light current class driving circuit and relay class circuit (for example heavy-current relay output class circuit) connect one to one.Wherein, in said light current class driving circuit, specifically comprise electronic expansion valve-driving circuit, electrical heating driving circuit, outside output circuit and other light current class driving circuits, connect one to one with different light current pilot lamp respectively.In said heavy-current relay output class circuit, specifically comprise the relay circuit and the relay circuit that is used to control water pump that are used to control AC blower fan, connect one to one with different forceful electric power pilot lamp respectively.After detecting beginning, through driving each road pilot lamp cycle lighting successively, whether such circuit of artificial judgment is normal.
For the testing result of various functional circuits, can ring through the hummer on the driving of the buzzer drive circuit on the indoor set control panel automatic detection device and indicate; Also can be employed in the external control template die and intend the mode that the charactron circuit is set in the frock plate; Receive the display message that MCU generates according to testing result on the indoor set control panel; And then through charactron demonstration DTC; With fault location position or display reminding information, and then the guidance technology personnel carry out follow-up testing process.
Indoor set control panel to be detected is installed in the above-mentioned automatic detection device, just can starts the self-check program among the MCU, accomplish automatic detection each functional circuit on the indoor set control panel.
In the present embodiment, described self check scheme can be carried out in two steps: the first step is carried out comprehensive self check, and second step was carried out the special self check of toggle switch.Here, the special self check of described toggle switch is that existing toggle switch circuit on the indoor apparatus of air conditioner control panel is carried out the special process that detects.
For control system gets into the different detection program, present embodiment preferably adopts the mode that the test interface TEST on the indoor apparatus of air conditioner control panel is carried out short circuit at times to realize.As a kind of preferred design, the mode control system of short circuit TEST mouth got into comprehensive self-check program before present embodiment preferably was employed in control panel and powers on; And the mode control system of (in 30 seconds) short circuit TEST mouth gets into the special self-check program of toggle switch circuit in the setting-up time after being employed in control panel and powering on.If do not detect the TEST mouth by short circuit in the setting-up time of control panel after powering on, then get into normal working procedure.
Below in conjunction with Fig. 2 A, Fig. 2 B the design cycle of the special self-check program of described comprehensive self-check program and toggle switch circuit is carried out detailed explanation.
Shown in Fig. 2 A and Fig. 2 B, specifically may further comprise the steps:
S201, before the indoor set control panel is powered on, at first with the test interface TEST short circuit on the control panel; Then,, utilize the power circuit on the control panel to convert the forceful electric power of importing on the control panel required working power of each load, be each electricity consumption electric to the logical forceful electric power of indoor set control panel.
Whether MCU on S202, the indoor set control panel at first detects the TEST mouth by short circuit after the operation that powers on, if by short circuit, then move comprehensive self-check program automatically; Otherwise, jump to step S215.
S203, MCU at first carry out initialization to program after starting comprehensive self-check program, read the feature list among the EEPROM, to confirm which functional circuit is detected.
Here, because the function that the air conditioner of different type of machines is supported is different, therefore; Functional circuit on its indoor set control panel also is not quite similar; The air conditioner type that for example has has keypad and line control machine, and the type that has is not with, read functions tabulation before the self check process formally begins; Can only the functional circuit that truly has on the indoor set control panel be detected by guidance system, to guarantee the accuracy of testing result.
In the present embodiment, said MCU at first visits EEPROM, and the read functions tabulation if the reading of data mistake does not for example read proper data in setting-up time, is then judged the EEPROM fault, stops testing process, and reports an error.If reading of data is normal, then carry out subsequent operation.
S204, automatically start detection voluntarily to functional indicator light driving circuit, telecommunication circuit, electric machinery driving circuit, senser sampling circuit, and to the detection of the level state of the default location of original toggle switch circuit on the level state of the default location of high-low level input type circuit and the control panel.
In the present embodiment, the detection of functional indicator light driving circuit adopted drive each road pilot lamp in order successively and light and extinguished then in 1 second, and move in circles successively, till the control panel outage or withdrawing from trace routine.Whether normal for the functional indicator light driving circuit, need each road pilot lamp of manual observation whether to judge according to both definite sequence light on and off successively.
To the detection of telecommunication circuit on the control panel, comprise the detection of the telecommunication circuit that is used for the telecommunication circuit that is connected with the off-premises station control panel, the telecommunication circuit that is connected with the Ao Weier line control machine, telecommunication circuit, the telecommunication circuit that is connected with computing machine that the HBS line control machine is connected and is connected with the indoor set display board.MCU sends the particular communication data according to the communication protocol of formulating in advance, and waits for the communication data that receives external simulation frock plate feedback.If data have and back, and the feedback data that receives is identical with the communication data that sends, and thinks that then telecommunication circuit is normal, drives charactron and shows " 0 "; Otherwise, think to drive the telecommunication circuit fault charactron and show DTC, and stop testing process, drive the hummer long time of alarm.
To the detection of electric machinery driving circuit on the control panel, comprise to the detection of dc fan driving circuit with to the detection of PG motor-drive circuit.MCU adopts the pwm pulse ripple of the certain dutycycle of output, and receives the pwm pulse ripple of simulation frock plate feedback, whether judges through the consistance of detection waveform whether such circuit is normal.As a kind of preferred design of present embodiment, the MCU output duty cycle is 25% pwm pulse ripple, waits for the pulsating wave that receives dc fan simulation frock plate feedback then.If pulse signal has and back, and the dutycycle of the pwm pulse ripple through dc fan simulation frock plate feedback also is 25%, judges that then the dc fan driving circuit is normal, drives charactron demonstration " 0 "; Otherwise, judge dc fan driving circuit fault, drive charactron and show DTC, and stop testing process, drive the hummer long time of alarm.In like manner, for the detection of PG motor-drive circuit, the MCU output duty cycle is 70% pwm pulse ripple, waits for the pulsating wave that receives PG motor simulation frock plate feedback then.If the dutycycle of the pwm pulse ripple of PG motor simulation frock plate feedback also is 70%, judge that then the PG motor-drive circuit is normal, drive charactron and show " 0 "; Otherwise, judge PG motor-drive circuit fault, drive charactron and show corresponding DTC, and stop testing process, drive the hummer long time of alarm.
To the detection of control panel upper sensor sample circuit, comprise to the detection of temperature sensor sampling circuit with to the detection of humidity sensor sample circuit.MCU utilizes its A/D interface to receive the voltage sample value of each sample circuit output; And convert corresponding with it temperature value or humidity value to, compare with the setting value of preserving in advance, if consistent; Then the determine sensor sample circuit is normal, drives charactron and shows " 0 "; In the present embodiment, the temperature value permissible error is ± 2 ℃, and the humidity value permissible error is ± 10%.Otherwise determine sensor sample circuit fault drives charactron and shows corresponding DTC, and stops testing process, drives hummer and yowls.
To the detection of the acquiescence level state of type circuit of high-low level input on the control panel, comprise AC blower fan protection feedback circuit, water level switch circuit, outside input circuit and other are required the detection of the on-off circuit of high-low level input.The MCU acquiescence receives high level signal, and promptly the default location of toggle switch is ON.MCU judges that automatically its each road connects whether the magnitude of voltage that the input interface of high-low level input type circuit receives is high level, if then think to drive a high-low level input type circuit no problem charactron and show " 0 "; Otherwise, judge high-low level input type fault, drive charactron and show corresponding DTC, and stop testing process, drive hummer and yowl.In this testing process, might be not the problem of high-low level input type circuit itself because the technician does not in advance toggle it to default location ON with toggle switch to cause.In order to address this problem; MCU is when driving buzzer warning; Continuation detects the level state that it receives low level input interface; If become high level (being that the technician toggles it to correct default location ON with toggle switch), think that then fault disappears, continue to carry out follow-up detection step.
Detection to the acquiescence level state of original toggle switch circuit on the control panel; Employing is as the detection mode of above-mentioned high-low level input type circuit, and promptly before trace routine began, the technician needed at first toggle switch to be toggled it to default location; For example position OFF promptly opens a way.After trace routine began, whether the level state that MCU detects its interface that connects said toggle switch circuit was high, if high, then thought to drive said toggle switch circuit no problem charactron and show " 0 "; Otherwise, judge said toggle switch fault, drive charactron and show corresponding DTC, and stop testing process, drive hummer and yowl.
S205, MCU are after formal testing process begins; Postpone setting-up time, for example after 6 seconds, judge that non-fault occurs; Then drive charactron display reminding information; Such as back three demonstrations " 000 " at charactron, normal with the above-mentioned detection of notification technique personnel, begin the detection of follow-up heavy-current relay output class circuit.
After S206, charactron show " 000 " two seconds (can certainly be set at other times), start the detection of heavy-current relay output class circuit automatically.
In the present embodiment, said heavy-current relay output class circuit comprises the relay circuit and the relay circuit that is used to control water pump, a corresponding n heavy-current relay that is used to control AC blower fan.MCU moves through the heavy-current relay of the n on the drive controlling plate successively; And then a control and the corresponding external n of a said n heavy-current relay forceful electric power pilot lamp (preferably adopting forceful electric power LED lamp) cycle lighting successively; Through the situation of lighting of manual observation pilot lamp, judge artificially whether described heavy-current relay output class circuit is normal.
The cycle lighting process of said pilot lamp can continue to carry out always, perhaps withdraws from trace routine up to the control panel outage.
S207, after postponing a period of time, for example postpone 2n after second, MCU starts the detection to light current class driving circuit automatically.
In the present embodiment, said light current class driving circuit comprises electronic expansion valve-driving circuit, electrical heating driving circuit, outside output circuit etc., m light current interface of corresponding MCU control.MCU is through the level of m light current interface on the drive controlling plate successively; And then control and said m the corresponding external m of a light current interface light current pilot lamp (preferably adopting light current LED lamp) cycle lighting successively; Through the situation of lighting of manual observation pilot lamp, judge artificially whether described light current class driving circuit is normal.
The cycle lighting process of said pilot lamp can continue to carry out always, perhaps withdraws from trace routine up to the control panel outage.
S208, after postponing a period of time; After for example postponing the cycle period of a light current LED lamp (suppose a light current LED lamp light 1 second, extinguished 1 second; Then a cycle period is 2m second); MCU drives charactron display reminding information, for example in back three demonstrations " 999 " of charactron, begins to carry out the detection of remote-control receiving circuit with the notification technique personnel.
S209, technician press a good function button of chosen in advance on the telepilot, preferred remote control machine open/close button seeing that charactron shows after " 999 ".MCU resolves said remote signal after receiving remote signal, identifies the pairing function button of said remote signal; If conform to (such as remote control machine open/close button) with previously selected function button; Judge that then said remote-control receiving circuit is normal, drive hummer and ring two, and control charactron display reminding information; For example, begin to carry out the detection of key control circuit with the notification technique personnel in back three demonstrations " 777 " of charactron; If do not conform to, then stop testing process, and the driving charactron shows corresponding DTC.
S210, technician are seeing that charactron shows after " 777 ", a good function button of chosen in advance on the plate that pushes button, preferred machine open/close button.MCU resolves said push button signalling after receiving push button signalling, identifies the pairing function button of said push button signalling; If conform to previously selected function button (such as the machine open/close button); Judge that then said key control circuit is normal,, drive charactron display reminding information through intending the frock board communications with the external control template die; For example, begin to carry out the further detection of high-low level input type circuit with the notification technique personnel in back three demonstrations " 666 " of charactron; If do not conform to, then stop testing process, and the driving charactron shows corresponding DTC.
S211, the toggle switch that will connect said high-low level input type circuit toggle it to the position opposite with default location, for example the OFF position.At this moment, if MCU detects low level, then drive charactron and show DTC; Then toggle switch is dialled again and got back to default location, for example the ON position if MCU detects high level, is then controlled charactron and is removed DTC.After requiring the toggle switch K1-K4 of the on-off circuit of high-low level input to carry out two-way stirring to external AC blower fan protection feedback circuit, water level switch circuit, outside input circuit and other successively; If being used to connect the input interface of high-low level input type circuit, each road of MCU all detects high and low two kinds of level states; Need not to consider the detection order; Think that then the high-low level input type circuit that is connected with this road input interface is normal, otherwise charactron shows corresponding DTC; And stop testing process, drive hummer simultaneously and yowl.
S212, detection finish, and MCU drives charactron display reminding information, and for example in back three demonstrations " 886 " of charactron, personnel detect end with notification technique.
S213, technician are seeing that charactron shows after " 886 ", and promptly the comprehensive self-check program of decidable finishes, and then the outage of control indoor set control panel, prepare to get into the special self-check program of toggle switch circuit.
S214, technician all toggle it to the position opposite with default location with original toggle switch on the indoor set control panel; ON position for example; Then to the logical light current of indoor set control panel; Only give MCU and toggle switch circuit supply, and in setting-up time (for example in 30 seconds) with TEST mouth short circuit.
S215, MCU detect the TEST mouth by short circuit in 30 seconds after powering on, and then get into the special self-check program of toggle switch circuit automatically.If MCU does not detect the TEST mouth by short circuit in 30 seconds after powering on yet, then withdraw from the special self-check program of toggle switch circuit.
S216, MCU detect each road input interface that it connects the toggle switch circuit; If all detect low level (promptly with the opposite level of the pairing level state of default location); Judge that then said toggle switch circuit is normal; Drive charactron display reminding information, for example in back three demonstration " 888 " of charactron, with the special self-check program end of notification technique personnel toggle switch circuit; Otherwise, drive charactron and show corresponding DTC.If a plurality of faults are arranged, then each DTC shows 2 seconds, and the demonstration that circulates.
S217, special self-check program finish.
In the present embodiment, the fault for the indoor set control panel shows that back three of the regulation charactron are DTC demonstration position.If DTC is merely units, then only show last position; If DTC is a double figures, then only show last two.Can intend the frock plate by indoor set control panel notice external control template die to be detected for sending of fault content, but specifically on charactron, show why hinder digital content, then can carry out the conversion process realization by the processor that the external control template die is intended on the frock plate.
As protection to above-mentioned self-check program, protection strategy below present embodiment proposes:
1, the protection of self-check program comprehensively
(1) be no more than 5 minutes the working time of self-check program comprehensively, otherwise withdraw from voluntarily, must all DTCs be removed when withdrawing from; And
If a) be in power-up state, time is up and withdraw from, and gets into the deadlock state after then withdrawing from self-check program;
B) if outage is withdrawed from, then handle by off-position;
(2) can only get into once self-check program comprehensively after powering at every turn, get into once more if desired, must re-power.
2, the protection of the special self-check program of toggle switch circuit
(1) is no more than 1 minute the working time of the special self-check program of toggle switch circuit (from the timing of TEST mouth short circuit), otherwise withdraws from voluntarily, must all DTCs be removed when withdrawing from; And
If a) be in power-up state, time is up and withdraw from, and gets into the deadlock state after then withdrawing from self-check program;
B) if outage is withdrawed from, then handle by off-position;
(2) can only get into the special self-check program of a toggle switch circuit after powering at every turn, get into once more if desired, must re-power.
The present invention is through adopting above-mentioned detection scheme; Can realize qualitative and quantitative detection to various types of indoor apparatus of air conditioner control panels; Testing result is accurate more, reliable, and detecting operation is simple more, directly perceived, and the indoor set control panel after the detection also more has quality assurance.
Certainly; The above only is a kind of preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the automatic testing method of an indoor apparatus of air conditioner control panel is characterized in that: use the different detection means to the difference in functionality circuit on the indoor set control panel, comprise
Detection to telecommunication circuit: formulate communication protocol, send and the received communication data, whether judge correctly through the data that detection receives whether telecommunication circuit is normal;
Detection to the electric machinery driving circuit: external simulation frock plate, send pulsating wave and receive the pulsating wave of simulating frock plate feedback to simulation frock plate, judge according to the waveform of transmitting-receiving pulsating wave whether said electric machinery driving circuit is normal;
Detection to senser sampling circuit: utilize fixed resistance to replace sensor to connect said senser sampling circuit, through the processor on the indoor set control panel read sampled value and with setting value relatively, whether normal to judge said senser sampling circuit;
Detection to high-low level input type circuit: external toggle switch, whether the position of switching toggle switch has high and low two kinds of level inputs to judge whether said high-low level input type circuit is normal through detecting;
Detection to light current class driving circuit or relay class circuit: external pilot lamp, judge through control pilot lamp light on and off whether said light current class driving circuit or relay class circuit be normal.
2. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 1; Whether it is characterized in that: also comprise the detection to the functional indicator light circuit: the control function pilot lamp is lighted successively, is extinguished and moves in circles, light on request through the overview function pilot lamp and judge whether said functional indicator light circuit is normal.
3. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 2; It is characterized in that: also comprise detection: press a good function button of chosen in advance on the telepilot remote-control receiving circuit; The indoor set control panel is after receiving remote signal; Judge that whether the pairing function button of said remote signal conforms to preset function button, if conform to, judges that then said remote-control receiving circuit is normal.
4. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 3; It is characterized in that: also comprise detection: a good function button of chosen in advance on the plate that pushes button key control circuit; The indoor set control panel is after receiving push button signalling; Judge that whether the pairing function button of said push button signalling conforms to preset function button, if conform to, judges that then said key control circuit is normal.
5. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 1; It is characterized in that: in said testing process telecommunication circuit; Said telecommunication circuit comprises the telecommunication circuit that is connected with the off-premises station control panel, the telecommunication circuit that is connected with line control machine, the telecommunication circuit that is connected with computing machine and the telecommunication circuit that is connected with the indoor set display board; Each telecommunication circuit is intended frock plate, line control machine simulation frock plate, computer simulation frock plate and display board simulation frock plate with the external control template die respectively and is connected one to one the transport communication data; Each is simulated the frock plate communication data that receives is fed back to the indoor set control panel, and said indoor set control panel compares feedback data that receives and the previous communication data that sends, if unanimity judges that then telecommunication circuit is normal.
6. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 1; It is characterized in that: in said testing process the electric machinery driving circuit; Said electric machinery driving circuit comprises dc fan driving circuit and PG motor-drive circuit; Connect one to one with dc fan simulation frock plate and PG motor simulation frock plate respectively; Transmission pwm pulse ripple, consistent as if the pulsating wave that sends through the electric machinery driving circuit with the waveform of its feedback pulse ripple that receives, judge that then said electric machinery driving circuit is normal; In said testing process to high-low level input type circuit, a said high-low level input type circuit comprises AC blower fan protection feedback circuit, water level switch circuit, outside input circuit and on-off circuit, connects one to one with different toggle switchs respectively.
7. according to the automatic testing method of each described indoor apparatus of air conditioner control panel in the claim 4 to 6; It is characterized in that: said indoor set control panel is after getting into self-check program; At first read functions tabulation, each item function executing listed according to feature list and the detection of the corresponding functional circuit of said each item function;
In testing process, carry out following steps successively:
(1) the pairing level state of default location to telecommunication circuit, electric machinery driving circuit, senser sampling circuit, functional indicator light circuit and high-low level input type circuit detects automatically; If it is all normal; Then carry out subsequent step; Otherwise stop testing process, and show DTC;
(2) drive relay class circuit operation, the external pilot lamp of control and relay is cycle lighting successively;
(3) control and the external pilot lamp of light current class driving circuit cycle lighting successively;
(4) display reminding information, notification technique personnel press the good function button of chosen in advance on the telepilot, if remote-control receiving circuit is normal, display reminding information then gets into the detection of key control circuit; Otherwise stop testing process, and show DTC;
(5) the good function button of chosen in advance on the plate that pushes button, if key control circuit is normal, display reminding information then, the detection that gets into high-low level input type circuit; Otherwise stop testing process, and show DTC;
(6) stir successively and the said high-low level input type mutually external toggle switch of circuit, if detect, then stop testing process, and show DTC less than high and low two kinds of level states.
8. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 7 is characterized in that: the step that the pairing level state of default location of original toggle switch detects automatically in the step (1) of said self-check program, also comprising the indoor set control panel.
9. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 8 is characterized in that: said indoor set control panel at first detects whether short circuit of its test interface after powering on, if short circuit then gets into described self-check program; If short circuit not, but in setting-up time, detect said test interface by short circuit, then get into the special self-check program of toggle switch, be used for original toggle switch circuit on the said indoor set control panel is detected; If in setting-up time, also do not detect described test interface, then get into normal working procedure by short circuit.
10. the automatic testing method of indoor apparatus of air conditioner control panel according to claim 9; It is characterized in that: after said self-check program finishes; The outage of control indoor set control panel, the position of stirring of switching original toggle switch on the said indoor set control panel is then to light current on the said indoor set control panel; And in setting-up time the described test interface of short circuit; Get into the special trace routine of toggle switch,, judge that then said toggle switch circuit is normal if detect the level state generation saltus step of said toggle switch circuit output; Otherwise, show DTC.
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