CN111365823A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN111365823A CN111365823A CN201811587460.3A CN201811587460A CN111365823A CN 111365823 A CN111365823 A CN 111365823A CN 201811587460 A CN201811587460 A CN 201811587460A CN 111365823 A CN111365823 A CN 111365823A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an air conditioning system and a control method of the air conditioning system.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of control, in particular to an air conditioning system.
[ background of the invention ]
The air conditioning system comprises a controller, a refrigerant system and an air door, wherein the air door is a necessary component for realizing indoor temperature control, the controller can adjust the action of the air door, and how to design the air conditioning system is beneficial to identifying the abnormity of the air door is a technical problem.
[ summary of the invention ]
The invention aims to provide an air conditioning system and a control method of the air conditioning system, which are beneficial to identifying the abnormity of an air door.
One technical scheme of the invention provides a control method of an air conditioning system, which is applied to the air conditioning system, wherein the air conditioning system comprises a controller, a detection device, a motor and an air door, the controller is in signal connection with the motor, the motor can enable the air door to act, and the controller can adjust the position of the air door through the motor; the controller is in signal connection with the detection device, and the controller can obtain the position of the air door through the detection device; the controller comprises a timing unit and a processing unit, and the timing unit is in signal connection with the processing unit;
the control method of the air conditioning system comprises the following steps: the controller calculates an air door stroke according to a first current position of the air door and a first position of the air door, and the controller acquires first time corresponding to the air door stroke; the controller judges the relation between the running time of the air door and the first time, and if the running time of the air door is greater than the first time, the controller judges that the air door is abnormal;
wherein the first time refers to a calculated time for the damper to travel from a first position to the first current position, a path through which the damper travels from the first position to the first current position is defined as a damper travel, and the damper travel time refers to an actual time for the damper to travel from the first position to the first current position.
One technical scheme of the invention provides an air conditioning system, which comprises a controller, a detection device, a motor and an air door, wherein the controller is in signal connection with the motor, the motor can enable the air door to act, and the controller can adjust the position of the air door through the motor; the controller is in signal connection with the detection device, and the controller can obtain the position of the air door through the detection device; the controller comprises a timing unit and a processing unit, and the timing unit is in signal connection with the processing unit;
the controller calculates an air door stroke according to a first current position of the air door and a first position of the air door, and the controller acquires first time corresponding to the air door stroke; the controller judges the relation between the running time of the air door and the first time, and if the running time of the air door is greater than the first time, the controller judges that the air door is abnormal;
wherein the first time refers to a calculated time for the damper to travel from a first position to the first current position, a path through which the damper travels from the first position to the first current position is defined as a damper travel, and the damper travel time refers to an actual time for the damper to travel from the first position to the first current position.
The air conditioning system and the control method thereof comprise the following steps: the controller acquires a first time corresponding to the stroke of the air door, wherein the first time refers to the calculation time of the air door from the first position to the first current position; the controller can judge whether the air door is abnormal according to the relation between the actual time of the air door operation and the first time, if the air door operation time is more than the first time, the abnormity of the air door is shown, and thus, the judgment of whether the air door is abnormal is facilitated.
[ description of the drawings ]
FIG. 1 is a schematic view of a connection of portions of an air conditioning system according to one embodiment of the present invention;
FIG. 2 is a schematic view of a portion of an air conditioning system according to another embodiment of the present invention;
FIG. 3 is a schematic primary work flow diagram of a first embodiment of an air conditioning system;
FIG. 4 is a schematic primary work flow diagram of a second embodiment of an air conditioning system;
fig. 5 is a schematic view of an operation flow of initialization of an air conditioning system according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart of an air conditioning system according to an embodiment of the present invention in a first conditioning mode;
FIG. 7 is a schematic flow chart illustrating operation of the air conditioning system of FIG. 6 when the damper run time is less than a first time;
FIG. 8 is a schematic control flow diagram of target interval update in the first adjustment mode;
FIG. 9 is a schematic flow chart of an air conditioning system according to an embodiment of the present invention in a second conditioning mode;
FIG. 10 is a diagram illustrating the relationship between a first current position, a first position, and a target position;
FIG. 11 is a schematic primary operational flow diagram of a third embodiment of an air conditioning system;
FIG. 12 is a schematic view of a damper fault determination process.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and specific examples. The embodiment of the invention also provides a control method of the air conditioning system, which can be applied to the air conditioning system and can be used for controlling the air conditioning system. Referring to fig. 1, the air conditioning system includes a controller 3, a driving device and an air door 4, the driving device includes a detecting device 2 and a motor 1, the controller 3 is in signal connection with the motor 1, the motor 1 is in transmission connection with the air door 4, the controller 3 outputs a control signal to adjust the motor to operate, and the air door 4 operates under the driving of the motor 2; the controller 3 is in signal connection with the detection device 2, and the detection device 2 can detect the position of the air door and convert the position information of the air door into a detection signal or convert the position information of the air door into the detection signal by the controller. In particular, the detection means may be a feedback resistor, such as a slip film resistor, and the drive means may be a motor comprising a slip film resistor, in which case the drive means is a motor having a slip film resistor; the feedback resistor may be provided separately from the motor. The detection device 2 is in signal connection with the motor 1, the detection device 2 can monitor the running state of the motor, wherein the running state of the motor comprises parameters such as rotating speed, rotating angle or axial displacement of a rotating shaft of the motor, the detection device 2 can detect the rotating angle of the motor and convert the rotating angle into a detection signal or convert the rotation angle into the detection signal by the controller, the air door acts under the driving of the motor, the controller 3 can obtain the detection signal and analyze the position of the air door, and therefore the controller 3 can obtain the position of the air door through the detection device 2. In one embodiment of the air conditioning system, the controller 3 is a main controller of the air conditioning system, and the controller 3 may also be a dedicated controller for the damper, which is in signal connection with the main controller and is capable of receiving signals from the main controller and feeding back information to the main controller. In this embodiment, the controller includes a control circuit, the control circuit at least includes a processing unit 31, and the processing unit 31 is used for information processing; a memory unit 32 may also be included, the memory unit being in signal connection with the processing unit, the memory unit 32 being adapted to store the relevant parameters. The controller 3 further comprises a timing unit 33, the timing unit 33 is in signal connection with the processing unit 31, and the timing unit 33 is in signal connection with the storage unit 32. The timing unit 33 can record the time of actions such as obtaining, determining, and sending and receiving instructions by the processing unit 31, and the timing unit 33 can also store the time and the corresponding instructions in the storage unit 32 for the processing unit 31 to call. For example, the controller 3 may obtain the time when the damper reaches the current position through the timing unit 33, and the controller 3 may also obtain the time when the damper reaches the target position through the timing unit 33. Referring to fig. 1, the motor 1 is in signal connection with the controller 3 through the first connection line 11 and/or the second connection line 12, the controller 3 inputs a control signal to the motor 1 through the first connection line 11 and/or the second connection line 12 to control the motor 1 to operate, the control signal input by the controller 3 to the motor 1 may be a voltage or a current, and the control signal is described as a voltage herein. The type of the control signal and the type of the detection signal may be the same, such as both voltages; the type of the control signal and the type of the detection signal may also be different, for example, the control signal is a current and the detection signal is a voltage. The detection device 2 is in signal connection with the controller 3 through a third connection line 21, a fourth connection line 22 and a fifth connection line 23, the controller 3 supplies power to the detection device through the third connection line 21 and the fourth connection line 22, and the controller 3 obtains a detection signal through the fifth connection line 23, wherein the type of the detection signal can be voltage, current or other signals. When the voltage between the first connecting line 11 and the second connecting line 12 is positive, defined as a positive control signal, the motor can be set to act in a positive direction, when the current position of the air door is smaller than the target position of the air door, the air door gradually approaches the target position, and the detection signal received by the controller 3 is increased; when the voltage between the first connecting line 11 and the second connecting line 12 is negative, a negative control signal is defined, the reverse action of the motor can be set, when the current position of the air door is greater than the target position of the air door, the air door gradually approaches the target position, and the detection signal received by the controller is reduced; when the voltage between the first connecting line and the second connecting line is zero, namely the control signal is 0 or the controller 3 controls the motor to stop operating, and when the motor 1 stops operating, the detection signal does not change, wherein the "voltage between the first connecting line and the second connecting line" refers to the voltage of the first connecting line minus the voltage of the second connecting line.
As shown in fig. 2, only the differences from the solution of fig. 1 will be described. The detection device 2 and the motor 1 are relatively independent devices, and the detection device 2 is arranged at a place where the position of the air door 4 can be monitored, and is not described in detail; the detection device 2 may be a position sensor, such as an angle sensor or a photoelectric sensor, which is capable of detecting the position of the damper and converting it into a detection signal. The controller 3 is in signal connection with the motor 1 through at least one connecting line, and the controller 3 inputs control signals to the motor 1 through the connecting line; the controller 3 is in signal connection with the detection device 2 so that the controller 3 can acquire the detection signal. The air conditioning system comprises a driving module, the driving module is in signal connection with the processing unit and is in signal connection with the motor, and the driving module can be arranged on the controller and can also be arranged on the motor.
Referring to fig. 3 and 4, the operation phases of the air conditioning system mainly include initialization, a first adjustment mode and a second adjustment mode. In one embodiment, the air conditioning system first enters initialization, i.e., initialization of the air conditioning system, then enters a first conditioning mode, and then enters a second conditioning mode; in another embodiment, after the air conditioning system is initialized, the air conditioning system firstly enters a second regulation mode and then enters a first regulation mode; or when the first adjusting mode is executed, the first adjusting mode is switched to the second adjusting mode after the set condition is met; or when the second adjusting mode is executed, the first adjusting mode is executed after the set condition is met. The controller in the second adjusting mode outputs a control signal to the motor, and the motor drives the air door to move towards the target position; the first adjustment mode refers to the controller 3 determining whether the damper 4 is abnormal, including locked rotor. In other technical solutions of the present invention, the first adjustment mode may also be a part of the initialization of the air conditioning system, that is, it is determined whether the damper is abnormal during the initialization.
In particular, in order to make the following description of the specific operation steps easier to understand, the meanings of the three concepts "first position", "damper stroke", and "target position" to be mentioned later are explained in advance herein. Specifically, the position of the damper includes fully open, fully closed, and positions between fully open and fully closed, for convenience of description, the fully open of the damper is set to position 0, and the fully closed of the damper is set to position M, a "target position" in the present invention refers to a controller that controls a stop position C of the damper, it can be known that the position C is located between position 0 and position M, the target position C is a variable value, and at this time, the target position C can be calculated by the controller according to other conditions, such as calculating the target position of the damper according to an ambient temperature and/or solar radiation and/or an indoor temperature and/or a set temperature; the target position of the damper 4 may also be a set value corresponding to the operating mode of the air conditioner, and the set value is stored in the storage unit 32 of the controller, for example, the position of the temperature damper set by the air conditioner system during dehumidification of the air conditioner system, or the required air mixing ratio of the internal and external circulation air mixing damper in different operating modes of the air conditioner system. The target position of the damper may be a value, but the target position of the damper may also be a set interval, or the damper may reach the target position when the first current position of the damper is in the set interval. The above-mentioned setting indicates the position area included in the section [ C- Δ s, C + Δ s ], but the set section may be (C- Δ s, C + Δ s) or (C- Δ s, C + Δ s ] or [ C- Δ s, C + Δ s ], where Δ s is greater than or equal to 0, the position C- Δ s is set as the lower limit of the target section, the position C + Δ s is set as the upper limit of the target section, Δ s may be an empirical value, or may be calculated by the controller according to other conditions, of course, the set section may be [ C-a, C + B ], where a ≠ B is convenient for the following description, if the damper position is in the position section [0, C ], it may be said that the damper position is smaller than the target position, if the damper position is in (C, M ], it may be said that the damper position is greater than the target position, and the damper stroke indicates the distance traveled by the damper from the first position to the target position, the damper travel is not simply considered a straight or arcuate distance between the two positions, but also includes the distance the damper travels back after traveling to some intermediate position.
In the present embodiment, the initialization of the air conditioning system refers to an operation of initializing the air conditioning system when the air conditioning system starts operating. The initialization includes various operation steps described below.
Powering on the air conditioning system, and controlling the air conditioning system to start running;
the controller 3 controls the air conditioning system to perform electrical self-inspection; the electrical self-test includes whether the controller is powered on normally, whether relevant units of the controller 3 work normally, whether the motor can act after being powered on, and the like.
If the electrical self-check fails, the controller sends out a self-check failure instruction;
if the electric self-inspection is passed, controlling the air door 4 to be fully opened by controlling the motor 1;
after the air door 4 is fully opened, the controller 3 controls the air door 4 to be fully closed by driving the motor 1;
after the air door 4 is fully closed, the controller 3 controls the air door 4 to be opened to a preset position through the motor 1 so as to determine that the air conditioning system can realize the required function, and simultaneously, a certain opening degree is reserved for the air door 4, so that when the air conditioning system works, the full opening or full closing of the air door 4 is prevented from influencing the work of other parts of the air conditioning system.
When the damper 4 is moved to a predetermined position, the air conditioning system initialization is completed.
The control method of the air conditioning system comprises the following steps: the controller 3 calculates the stroke of the air door according to the first current position of the air door 4 and the first position of the air door, and the controller 3 obtains first time corresponding to the stroke of the air door 4; the controller 3 judges the relation between the running time of the air door 4 and the first time, if the running time of the air door is greater than the first time, the controller 3 judges that the air door is abnormal; if the damper operating time is not greater than the first time, the controller 3 controls the damper 4 to move toward the target position of the damper. The damper abnormality determination is defined as a first regulation mode. The abnormality includes the rotation blockage of the air door, and the abnormality can also mean that the air door rotates slowly and does not reach the corresponding position according to the specified time. The controller 3 judges whether the air door is abnormal or not according to the relation between the first time and the air door operation time, and the control mode can accurately identify whether the air door is abnormal or not.
The control method of the air conditioning system further includes: the controller judges the relation between the first current position of the air door and the target position of the air door, and if the controller judges that the first current position of the air door is not located at the target position of the air door, the controller judges whether the air door is abnormal or not according to the relation between the running time of the air door and the first time; if the controller determines that the first current position of the damper is at the target position of the damper, the controller 3 controls the damper to stop the operation. Thus, whether the air door is abnormal or not is judged according to the relation between the air door operation time and the first time when the air door is not at the target position. Of course, when the first current position is located at the target position, whether the damper is abnormal or not may be determined according to the relationship between the first time and the damper operation time. "the first current position of the damper is located at the target position of the damper" means: when the target position of the air door is a value, the first current position of the air door is the same as the target position; when the target position of the air door is in an interval, the first current position of the air door is in a set interval. "the first current position of the damper is not located at the target position of the damper" means: when the target position of the air door is a value, the first current position of the air door is different from the target position; when the target position of the air door is in one interval, the first current position of the air door is not in the set interval.
The control method of the air conditioning system further includes: the controller obtains the damper operating time. Specifically, the controller 3 obtains a first position of the damper 4 and a first current position of the damper, the timing unit 33 records a time from the first position to the first current position of the damper, and the damper operation time is counted from when the controller 3 starts to control the damper 4 until the damper operates to the first current position.
It should be noted that: the first time is a calculated time from the damper's operation from the first position to the first current position of the damper, and typically the first time is only related to the operating speed of the damper after the first position and the first current position are determined. The control method of the air conditioning system further includes: the controller obtains a first time corresponding to a damper stroke. The first time may be obtained as follows: when the air door normally runs, the controller runs the air door stroke according to the time used by the air door for the last time or the last times, namely the first time.
The first time may also be obtained as follows: the controller 3 acquires a first current position of the air door and a first position of the air door, calculates the travel of the air door according to the first current position and the first position of the air door, and acquires the running speed of the air door; the first time is calculated based on the damper travel and the operating speed of the damper. Wherein, the stroke of the air door refers to the distance which the air door runs from the first position to the first current position of the air door. The controller calculates the operation speed of the air door according to the relation between the first stroke of the last time or last times of operation of the air door and the corresponding operation time, wherein the first stroke is only used for describing and acquiring the operation speed of the air door, the controller acquires the first stroke and the corresponding operation time, namely the operation speed of the air door can be calculated, the first stroke can be a fixed value, the controller controls the air door to operate the first stroke, and the controller records the time for operating the first stroke; the first stroke may also be a stroke during which the damper is actually operated, and the controller records the time during which the first stroke is operated. The first time is related to the stroke of the air door, in practical application, the stroke of the air door is different in size, and the first time is not a fixed value but related to the stroke of the air door; the first time is not a set value but calculated according to the actual running stroke and the actual running time of the last time or last times, and compared with the set value, the first time is closer to the actual condition, and the judgment of the abnormal condition of the air door is more accurate.
In another embodiment of the present invention, the damper stroke includes a first sub-interval and a second sub-interval, the operating speed of the damper includes a first sub-speed and a second sub-speed, the first sub-speed corresponds to the first sub-interval, or the damper operates at the first sub-speed when the damper is in the first sub-interval; the second sub-speed corresponds to a second sub-interval, or the damper operates at the second sub-speed during the second sub-interval; the first time includes a first sub-time and a second sub-time, the controller calculates the first sub-time according to the first sub-interval and the first sub-speed, and the controller calculates the second sub-time according to the second sub-interval and the second sub-speed. When the first time is calculated, the controller firstly judges whether the current position of the air door is in a first subinterval or a second subinterval, if the current position of the air door is in the first subinterval, a first sub-speed is obtained, and the controller calculates the first sub-time according to the first subinterval and the first sub-speed; if the second sub-interval is reached, the controller calculates a second sub-time according to the second interval and the second sub-speed; finally, the controller calculates the sum of the first sub-time and the second sub-time, namely the first time. Furthermore, the damper stroke includes a first sub-interval Q1, a second sub-interval Q2, a, an, N sub-interval QN, the operating speed of the damper includes a first sub-speed V1, a second sub-speed V2, a, an, N sub-speed VN, the first sub-speed V1 corresponds to the first sub-interval Q1, the second sub-speed V2 corresponds to the second sub-interval Q2, the, a, N sub-speed VN corresponds to the N sub-interval QN; the controller calculates a first sub-time T1 according to the first sub-interval and the first sub-speed, the controller calculates a second sub-time T2 according to the second sub-interval and the second sub-speed, the controller calculates an Nth sub-time TN according to the Nth sub-interval and the Nth sub-speed, and the first time is equal to the sum of the first sub-time T1, the second sub-time T2, the time, the Nth sub-time TN; wherein N is a positive integer, and N is greater than or equal to 3.
The control method of the air conditioning system further includes: if the running time of the air door is less than the first time and the first current position of the air door is not located at the target position of the air door, the controller can further judge whether the first current position of the air door is less than the target position of the air door or not, and if the first current position of the air door is less than the target position of the air door, the controller controls the air door to run towards the direction of increasing the detection signal; if the first current position of the damper is greater than the target position of the damper, the controller controls the damper to operate in a direction in which the detection signal decreases. This facilitates a fast reaching of the target position of the damper.
The controller 3 may also set a second set time that is a fraction of the damper operating time, or the damper operating time may include a second set time that is less than the first time, typically greater than one-third of the first time. The second set time may be counted from the start of the damper operation time, or may be counted from any time during the damper operation as the start. Within or after the second set time, the controller acquires the target position of the damper again, and the controller determines whether the target position of the damper is updated, specifically, the controller 3 may compare whether the old and new target positions are the same, and if they are the same, the target position is considered to be not updated, and if they are not the same, the target position is considered to be updated. If the controller 3 judges that the target position of the air door 4 is updated, the controller acquires a second current position of the air door, the controller 3 judges the relationship between the second current position of the air door 4 and the new target position of the air door, and if the controller 3 judges that the second current position of the air door 4 is in the new target position of the air door, the controller controls the air door to stop acting; if the controller determines that the second current position of the damper 4 is not located at the new target position of the damper, the controller controls the damper to move toward the new target position of the damper. After acquiring the new target position of the damper, the controller 4 determines whether the damper is located at the new target position, so that the control time can be shortened.
If the controller 3 judges that the second current position of the air door 4 is not located at the new target position of the air door, the controller judges whether the air door is abnormal or not according to the new target position of the air door. More specifically, the controller may assume a first position of the damper, although the damper operating time is counted from when the controller controls the damper to start operation from the first position; the controller may also use the second current position of the damper and the operating time of the damper is counted from when the controller controls the damper to operate from the second current position.
If the air door is not abnormal, the air conditioning system enters a second adjusting mode; the air conditioning system may also enter the second conditioning mode after initialization. The second adjustment mode comprises the steps of: the controller acquires the detection signal and analyzes the detection signal to acquire the current position of the air door; acquiring a target position of the air door;
judging the relation between the current position of the air door and the target position of the air door, judging whether the current position of the air door is located at the target position of the air door, if the current position of the air door is located at the target position, controlling the air door to stop acting by the controller, namely the controller 3 stops outputting a control signal, or outputting the control signal of 0, if the driving voltage is 0. If the current position of the air door is not located at the target position of the air door, the controller judges whether the current position of the air door is smaller than the target position of the air door or not, if the current position of the air door is smaller than the target position of the air door, the controller controls the air door to operate in the direction of increasing the detection signal, and if the controller outputs a positive control signal, the air door rotates in the positive direction; if the current position of the air door is larger than the target position of the air door, the controller controls the air door to operate in the direction of reducing the detection signal, and if the controller outputs a negative control signal, the air door rotates reversely.
Further, in a second adjusting mode of the air conditioning system, the controller can also obtain the running speed and the first position of the air door, calculate the air door stroke according to the target interval of the air door and the first position of the air door, and calculate the first time according to the air door stroke and the running speed of the air door; and judging the relation between the air door running time and the first time, and if the air door running time is greater than the first time, judging that the air door is abnormal by the controller. Therefore, when the air conditioning system operates in the second adjusting mode, the air door abnormity is judged, the problem can be found in time, and the control efficiency is improved.
The control method of the air conditioning system further includes: the controller records the abnormal times N of the air door, judges the relationship between the abnormal times N of the air door and N0, and if the abnormal times of the air door is more than N0, the controller judges that the air door is in fault. Wherein N0 is a set value, N0 is a positive integer, and N0 is greater than or equal to 1. The controller judges whether the air door has a fault according to the relation between the abnormal times and the set value, so that after the fault is judged, the controller can take further measures to deal with the fault problem.
It should be noted that: although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted for those skilled in the art, and all technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.
Claims (14)
1. The control method of the air conditioning system is applied to the air conditioning system, the air conditioning system comprises a controller, a detection device, a motor and an air door, the controller is in signal connection with the motor, the motor can enable the air door to act, and the controller can adjust the position of the air door through the motor; the controller is in signal connection with the detection device, and the controller can obtain the position of the air door through the detection device; the controller comprises a timing unit and a processing unit, and the timing unit is in signal connection with the processing unit;
the control method of the air conditioning system comprises the following steps: the controller calculates an air door stroke according to a first current position of the air door and a first position of the air door, and the controller acquires first time corresponding to the air door stroke; the controller judges the relation between the running time of the air door and the first time, and if the running time of the air door is greater than the first time, the controller judges that the air door is abnormal;
wherein the first time refers to a calculated time for the damper to travel from a first position to the first current position, a path through which the damper travels from the first position to the first current position is defined as a damper travel, and the damper travel time refers to an actual time for the damper to travel from the first position to the first current position.
2. The control method of an air conditioning system as set forth in claim 1, further comprising: the controller judges the relation between the first current position of the air door and the target position of the air door, and if the controller judges that the first current position of the air door is not located at the target position of the air door, the controller judges whether the air door is abnormal or not according to the relation between the first time and the running time of the air door; and if the controller judges that the first current position of the air door is located at the target position of the air door, the controller controls the air door to stop acting.
3. The control method of an air conditioning system according to claim 1 or 2, wherein the controller sets the first time according to a time taken for the previous or last operation of the damper stroke; or the controller calculates the running speed of the air door according to the relation between the first stroke of the last running or last running times and the corresponding running time, and the controller calculates the first time according to the stroke of the air door and the running speed of the air door.
4. A control method of an air conditioning system according to claim 3, characterized in that the damper stroke comprises a first sub-interval Q1, a second sub-interval Q2, a, N sub-interval QN, the operating speed of the damper comprises a first sub-speed V1, a second sub-speed V2, a, N sub-speed VN, the first sub-speed V1 corresponding to the first sub-interval Q1, the second sub-speed V2 corresponding to the second sub-interval Q2, the, N sub-speed VN corresponding to the N sub-interval QN;
the controller calculates the first sub-time T1 according to the first sub-interval and the first sub-speed, the controller calculates the second sub-time T2 according to the second sub-interval and the second sub-speed, the controller calculates the Nth sub-time TN according to the Nth sub-interval and the Nth sub-speed, and the first time is equal to the sum of the first sub-time T1, the second sub-time T2, the Nth sub-time TN;
wherein N is a positive integer, and N is greater than or equal to 2.
5. The control method of an air conditioning system according to any one of claims 1 to 4, wherein the detecting means is a position sensor capable of detecting the position of the damper; or the detection device is a feedback resistor, the detection device can detect the rotation angle of the motor or the axial displacement of the motor shaft, and the controller obtains the position of the air door according to the rotation angle of the motor or the axial displacement of the motor shaft;
the controller obtains a first current position of the damper and a target position of the damper; the controller judges whether the first current position of the air door is located at the target position of the air door, and if the controller judges that the first current position of the air door is located at the target position of the air door, the controller controls the air door to stop acting;
if the controller judges that the first current position of the air door is not located at the target position of the air door, the controller judges the relation between the air door running time and the first time, and if the air door running time is not greater than the first time, the controller controls the air door to move towards the target position of the air door.
6. The control method of an air conditioning system as set forth in claim 5, characterized in that if said controller judges that said first current position of said damper is not located at said target position of said damper; the controller judges whether the first current position of the air door is smaller than the target position, and if the first current position of the air door is smaller than the target position of the air door, the controller controls the air door to operate towards the increasing direction of the detection signal; and if the first current position of the air door is larger than the target position of the air door, the controller controls the air door to operate towards the direction of reducing the detection signal.
7. The control method of an air conditioning system according to claim 5 or 6, wherein the damper operation time includes a second set time, the second set time being less than the first time;
within or after a second set time, the controller acquires the target position of the air door again, and the controller judges whether the target position of the air door is updated or not;
the controller judges that the target position of the air door is updated, the controller acquires a second current position of the air door, the controller judges the relationship between the second current position of the air door and the new target position of the air door, and if the controller judges that the second current position of the air door is located at the new target position of the air door, the controller controls the air door to stop acting;
and if the controller judges that the second current position of the air door is not located at the new target position of the air door, the controller judges whether the air door is abnormal according to the new target position of the air door.
8. The control method of an air conditioning system according to any one of claims 1 to 7, characterized in that the control method of the air conditioning system includes a second adjustment mode in which the controller acquires a current position of the damper and a target position of the damper, determines a relationship between the current position of the damper and the target position of the damper, and controls the damper to operate in an increasing direction of the detection signal if the current position of the damper is smaller than the target position of the damper; if the current position of the air door is larger than the target position of the air door, the controller controls the air door to operate towards the direction of reducing the detection signal; if the current position of the damper is at the target position, the controller controls the damper to stop operating.
9. The control method of an air conditioning system according to claim 8, characterized in that in the second adjustment mode, if the current position of the damper is not located at the target position of the damper; the controller obtains the running speed of the air door and the first position of the air door, calculates the air door stroke according to the target position of the air door and the first position of the air door, and calculates the first time according to the air door stroke and the running speed of the air door; and judging the relation between the air door running time and the first time, and if the air door running time is greater than the first time, judging that the air door is abnormal by the controller.
10. The control method of an air conditioning system as claimed in any one of claims 1 to 9, wherein said controller records said number N of damper abnormality times, said controller judges the relationship between said number N of damper abnormality times and N0, and if said number of damper abnormality times is greater than N0, said controller judges that said damper is malfunctioning;
wherein N0 is a set value, N0 is a positive integer, and N0 is greater than or equal to 1.
11. An air conditioning system, the air conditioning system comprises a controller, a detection device, a motor and a damper, wherein the controller is in signal connection with the motor, the motor can enable the damper to act, and the controller can adjust the position of the damper through the motor; the controller is in signal connection with the detection device, and the controller can obtain the position of the air door through the detection device; the controller comprises a timing unit and a processing unit, and the timing unit is in signal connection with the processing unit;
the controller calculates an air door stroke according to a first current position of the air door and a first position of the air door, and the controller acquires first time corresponding to the air door stroke; the controller judges the relation between the running time of the air door and the first time, and if the running time of the air door is greater than the first time, the controller judges that the air door is abnormal;
wherein the first time refers to a calculated time for the damper to travel from a first position to the first current position, a path through which the damper travels from the first position to the first current position is defined as a damper travel, and the damper travel time refers to an actual time for the damper to travel from the first position to the first current position.
12. The air conditioning system as claimed in claim 11, wherein the controller sets the first time according to a time taken for the previous or last operation of the damper stroke; or the controller calculates the running speed of the air door according to the relation between the first stroke of the last running or last running times and the corresponding running time, and the controller calculates the first time according to the stroke of the air door and the running speed of the air door.
13. The air conditioning system of claim 12, wherein the damper travel includes a first sub-interval Q1, a second sub-interval Q2, a, an N sub-interval QN, the operational speed of the damper includes a first sub-speed V1, a second sub-speed V2, a, an N sub-speed VN, the first sub-speed V1 corresponds to the first sub-interval Q1, the second sub-speed V2 corresponds to the second sub-interval Q2, a, the N sub-speed VN corresponds to the N sub-interval QN;
the controller calculates the first sub-time T1 according to the first sub-interval and the first sub-speed, the controller calculates the second sub-time T2 according to the second sub-interval and the second sub-speed, the controller calculates the Nth sub-time TN according to the Nth sub-interval and the Nth sub-speed, and the first time is equal to the sum of the first sub-time T1, the second sub-time T2, the Nth sub-time TN;
wherein N is a positive integer, and N is greater than or equal to 2.
14. The air conditioning system as claimed in any one of claims 11 to 13, wherein said damper operation time includes a second set time, said second set time being less than said first time;
within or after a second set time, the controller acquires the target position of the air door again, and the controller judges whether the target position of the air door is updated or not;
the controller judges that the target position of the air door is updated, the controller acquires a second current position of the air door, the controller judges the relationship between the second current position of the air door and the new target position of the air door, and if the controller judges that the second current position of the air door is located at the new target position of the air door, the controller controls the air door to stop acting;
and if the controller judges that the second current position of the air door is not located at the new target position of the air door, the controller judges whether the air door is abnormal according to the new target position of the air door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587460.3A CN111365823A (en) | 2018-12-25 | 2018-12-25 | Air conditioning system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587460.3A CN111365823A (en) | 2018-12-25 | 2018-12-25 | Air conditioning system and control method thereof |
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| CN111365823A true CN111365823A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811587460.3A Pending CN111365823A (en) | 2018-12-25 | 2018-12-25 | Air conditioning system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113606844A (en) * | 2021-08-12 | 2021-11-05 | 长虹美菱股份有限公司 | Refrigerator electric air door with switch state detection function |
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