CN106705392B - Air conditioner and motor locked rotor detection device and door plant control system thereof - Google Patents
Air conditioner and motor locked rotor detection device and door plant control system thereof Download PDFInfo
- Publication number
- CN106705392B CN106705392B CN201710008092.1A CN201710008092A CN106705392B CN 106705392 B CN106705392 B CN 106705392B CN 201710008092 A CN201710008092 A CN 201710008092A CN 106705392 B CN106705392 B CN 106705392B
- Authority
- CN
- China
- Prior art keywords
- motor
- hall
- air conditioner
- magnetic ring
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The invention discloses a motor locked rotor detection device of an air conditioner, which comprises: the magnetic ring is fixed on a rotating assembly of the motor, and a magnetizing surface of the magnetic ring is filled with P N magnetic poles and Q S magnetic poles, wherein P, Q is an integer larger than 1; the X Hall detection assemblies are fixedly arranged close to the magnetic ring, sense the magnetic pole change of the magnetic ring when the rotating assembly of the motor rotates so as to correspondingly generate X-path sensing signals, and x is an integer greater than 1; the control unit, the control unit links to each other with x hall detecting element, and the control unit judges the state of motor according to x sensing signal to can effectively judge whether the motor takes place the lock rotor, and can shorten check-out time through magnetic ring and a plurality of hall detecting element, promote detectivity. In addition, the device has the advantages of small occupied space, low cost, convenience in installation, long service life, stability and reliability. The invention also discloses a door plate control system of the air conditioner and the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a motor locked-rotor detection device of an air conditioner, a door plate control system of the air conditioner and the air conditioner.
Background
With the popularization of intelligent automation and the pursuit of various products on quality and beauty, sliding door opening and closing devices are increasingly adopted in household appliances such as cabinet air conditioners, and a power mechanism of the sliding door is generally a motor. In the running process of the motor, if the locked rotor occurs, the mechanism is in an interference state at the moment, so that the motor and the electric appliance are damaged.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a motor stalling detection device for an air conditioner, which can effectively detect whether a motor stalls and has high detection sensitivity.
Another object of the present invention is to provide a door panel control system of an air conditioner. It is still another object of the present invention to provide an air conditioner. It is still another object of the present invention to provide an air conditioner.
In order to achieve the above object, an embodiment of the present invention provides an apparatus for detecting a locked-rotor of a motor of an air conditioner, including: the magnetic ring is fixed on a rotating assembly of the motor, and a magnetizing surface of the magnetic ring is filled with P N magnetic poles and Q S magnetic poles, wherein P, Q is an integer larger than 1; the X Hall detection assemblies are fixedly arranged close to the magnetic ring, the X Hall detection assemblies induce the magnetic pole change of the magnetic ring when the rotating assembly of the motor rotates so as to correspondingly generate an X-path induction signal, and x is an integer larger than 1; and the control unit is connected with the x Hall detection assemblies and judges the state of the motor according to the x induction signals.
According to the motor stalling detection device of the air conditioner, provided by the embodiment of the invention, the magnetic pole change of the magnetic ring is induced by the x Hall detection assemblies when the rotating assembly of the motor rotates so as to correspondingly generate x paths of induction signals, and then the control unit judges the state of the motor according to the x induction signals, so that whether the motor stalls can be effectively judged, corresponding measures are taken to adjust the rotation of the motor in time, the damage to a mechanism is avoided, the detection time can be shortened through the magnetic ring and the plurality of Hall detection assemblies, and the detection sensitivity is improved. In addition, the device has the advantages of small occupied space, low cost, convenience in installation, long service life, stability and reliability.
In addition, the motor stalling detection device according to the above embodiment of the invention may also have the following additional technical features:
according to one embodiment of the invention, the rotating component of the motor is a transmission gear or a drive shaft.
According to one embodiment of the invention, a fixing hole is formed in the middle of the magnetic ring so as to be riveted with a rotating component of the motor through the fixing hole.
According to one embodiment of the invention, the magnetizing surface of the magnetic ring is a peripheral side surface of the magnetic ring or an inner end surface of the magnetic ring.
According to one embodiment of the invention, the number of the N magnetic poles and the number of the S magnetic poles are equal, and the N magnetic poles and the S magnetic poles are arranged at intervals one by one.
According to one embodiment of the invention, the P N poles and the Q S poles are arranged in an equal width manner.
According to one embodiment of the invention, the x Hall detection assemblies are staggered by a preset angle according to the sum of the number of the N magnetic poles and the number of the S magnetic poles.
According to one embodiment of the invention, the preset angle is determined according to the following formula:
d＝360°/(P+Q)/x+n*2*360°/(P+Q)
wherein d is the preset angle, P is the number of the N magnetic poles, Q is the number of the S magnetic poles, x is the number of the Hall detection assemblies, and N is any positive integer.
According to one embodiment of the invention, the power supply ends of the x hall detection assemblies are all connected with a preset power supply through a first resistor, the grounding ends of the x hall detection assemblies are grounded, and first capacitors are connected between the power supply ends and the grounding ends of the x hall detection assemblies in parallel, wherein the detection end of each hall detection assembly senses the magnetic pole change of the magnetic ring, and the output end of each hall detection assembly outputs a corresponding sensing signal.
According to an embodiment of the present invention, the motor stalling detection device of an air conditioner further includes x output circuits, the x output circuits are connected to output ends of the x hall detection assemblies, and each output circuit includes: the Hall detection device comprises a second resistor and a third resistor which are connected in series, wherein one end of the second resistor and one end of the third resistor which are connected in series are connected with the preset power supply, the other end of the second resistor and the other end of the third resistor which are connected in series are connected with the control unit, a node is arranged between the second resistor and the third resistor which are connected in series, and the node is connected with the output end of the corresponding Hall detection assembly.
According to one embodiment of the invention, the Hall detection assembly is fixed on the air conditioner body.
According to an embodiment of the present invention, the hall sensing assembly generates a first sensing signal when facing the N magnetic pole and generates a second sensing signal when facing the S magnetic pole, the x sensing signals construct y level state combinations, y > x, and the control unit includes: a timer for timing the duration of each of the y detection states and for re-timing when a change in the level state combination occurs; and the control chip is connected with the timer, and the control chip judges the motor stalling when the duration time of any combination of the level states is greater than a preset time threshold value.
According to one embodiment of the invention, the number y of level-state combinations is 2 times the number x of sensing signals.
In order to achieve the above object, according to another embodiment of the present invention, a door panel control system for an air conditioner includes; the motor is used for driving the door plate of the air conditioner; the motor locked-rotor detection device of the air conditioner is used for detecting whether the motor is locked-rotor or not so as to judge whether the door panel meets an obstacle or not.
According to the door plate control system of the air conditioner, whether the door plate meets the obstacle or not can be judged through the motor stalling detection device, so that whether the door plate meets the obstacle or not can be effectively judged, corresponding measures can be taken to adjust the movement of the door plate in time, damage to a mechanism is avoided, detection time can be shortened through the magnetic ring and the plurality of Hall detection assemblies, detection sensitivity is improved, damage to a user, such as clamping of fingers, is prevented, and user experience is improved. In addition, the device has the advantages of small occupied space, low cost, convenience in installation, long service life, stability and reliability.
In order to achieve the above object, another embodiment of the present invention provides an air conditioner including the motor stalling detection device.
According to the air conditioner provided by the embodiment of the invention, the motor locked-rotor detection device can effectively judge whether the motor is locked-rotor or not, and has the advantages of high detection sensitivity, small occupied space, low cost, convenience in installation, long service life, stability and reliability.
In order to achieve the above object, according to another aspect of the present invention, an air conditioner is provided, which includes the door panel control system of the air conditioner.
According to the air conditioner provided by the embodiment of the invention, through the door panel control system, whether the door panel meets an obstacle or not is effectively judged, the detection sensitivity is high, the occupied space is small, the cost is low, the installation is convenient, the service life is long, the stability and the reliability are realized, the damage to a user such as finger clamping is prevented, and the user experience is improved.
Drawings
Fig. 1 is a block diagram schematically illustrating a motor stalling detection device of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a magnetic ring according to an embodiment of the present invention, wherein the magnetic ring is laterally magnetized;
FIG. 3 is a schematic structural diagram of a magnetic ring according to an embodiment of the present invention, wherein the magnetic ring is end-magnetized;
fig. 4 is a schematic structural diagram of a motor stalling detection device of an air conditioner according to an embodiment of the invention, wherein a magnetic ring is magnetized on the side;
fig. 5 is a schematic structural diagram of a motor stalling detection device of an air conditioner according to an embodiment of the invention, wherein a magnetic ring is magnetized by adopting an end face;
fig. 6 is a block diagram schematically illustrating a motor stalling detection device of an air conditioner according to an embodiment of the present invention;
FIG. 7 is a waveform diagram of the sensing signal output by the Hall sensing assembly according to one embodiment of the present invention, wherein the motor is not locked-up;
FIG. 8 is a waveform diagram of the sensing signal output by the Hall sensing assembly according to one embodiment of the present invention, wherein the motor is locked at time t 1;
FIG. 9 is a circuit schematic of a Hall sensing assembly according to one embodiment of the invention;
FIG. 10 is a block diagram illustrating a door panel control system of an air conditioner according to an embodiment of the present invention;
fig. 11 is a schematic view of a door panel of an air conditioner according to an embodiment of the present invention;
fig. 12 is a schematic view of a mounting position of a motor according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Before describing the motor locked-rotor detection device of the air conditioner, the door panel control system of the air conditioner and the air conditioner according to the embodiment of the present invention, a door panel blockage detection technology in the related art will be briefly introduced.
The related art discloses a door plate detection device that blocks, installs the grating strip additional on slidable door plate promptly to install luminotron and fluorescent tube additional respectively in grating strip both sides, the door plate produces high low level pulse feedback signal by the interval light transmissivity of grating strip when normally moving, can monitor whether blocking through the detection to high level or low level duration. However, the applicant finds that the device has the problems that the structure is complex, devices need to be additionally arranged on two sides of the grating, the difficulty is high, and a certain gap is needed between the grating and the door plate. In addition, due to the adoption of a photoelectric principle, in order to avoid multiple factors such as ambient light interference, the light transmission and shading gaps of the grating cannot be too narrow, the duration of high and low levels of feedback pulses is prolonged, the blocked detection time is prolonged, the detection sensitivity is reduced, and if fingers are clamped, the pain feeling lasts for a long time, so that the user cannot accept the feedback pulses.
The related art also discloses a door plate blocking detection device, which detects whether the barrier blocks the sliding door by using an impedance detection circuit by using the principle that the impedance of a parallel circuit is changed due to the change of the inductance value after the barrier is clamped by an inductance and capacitance parallel resonance circuit. However, the applicant has found that there is a problem that the lifetime of the detection device is limited and the function is likely to fail as the operation time becomes longer, because the inductor used in the parallel circuit is a metal sheet with copper foil traces, the inductance value change is caused by the deformation of the metal sheet caused by obstacles during blocking, and the metal sheet is severely extruded and deformed each time the sliding door is closed, and the metal sheet is irreversibly deformed or completely damaged after the repetition, so that the detection function is disabled. Moreover, the detection device is only suitable for a single-side door opening and closing device and cannot be used for a double-side door opening and closing device, because the detection device cannot be installed on a movable sliding door, is only suitable for blocking in the door closing process and cannot detect blocking in the door opening process.
Based on the above, the embodiment of the invention provides a novel motor locked-rotor detection device of an air conditioner, a door plate control system of the air conditioner and the air conditioner.
A motor stalling detection device of an air conditioner according to an embodiment of an aspect of the present invention will be described with reference to fig. 1 to 9.
As shown in fig. 1 to 5, the motor stalling detection device of an air conditioner according to an embodiment of the present invention includes: a magnetic ring 10, x hall detection assemblies 20 and a control unit 30.
The magnetic ring 10 is fixed on a rotating component of the motor, and a magnetizing surface of the magnetic ring 10 is filled with P N magnetic poles and Q S magnetic poles, wherein P, Q is an integer greater than 1; the x Hall detection assemblies 20 are fixedly arranged close to the magnetic ring 10, the x Hall detection assemblies 20 induce the magnetic pole change of the magnetic ring 10 when the rotating assembly of the motor rotates so as to correspondingly generate x paths of induction signals, and x is an integer larger than 1; the control unit 30 is connected to the x hall sensing assemblies 20, and the control unit 30 determines the state of the motor according to the x sensing signals.
It should be noted that the x hall detection assemblies 20 may be disposed corresponding to the magnetizing surface of the magnetic ring 10, and the x hall detection assemblies 20 may be close to the magnetic ring 10 but not in contact with the magnetic ring 10, and may be within the magnetic field induction range of the magnetic ring 10.
Specifically, when the motor rotates, the magnetic ring 10 rotates along with the motor, the x hall sensing assemblies 20 are fixed, the N magnetic pole and the S magnetic pole on the magnetizing surface of the magnetic ring 10 sequentially pass through each hall sensing assembly 20, the x hall sensing assemblies 20 sense the change of the magnetic pole of the magnetic ring 10 to output x sensing signals, such as high and low level pulse sequences, the x sensing signals output when the motor rotates according to a preset rotating speed conform to a corresponding rule, the magnetic poles sensed by the x hall sensing assemblies 20 remain unchanged when the motor stops rotating, and the x sensing signals cannot conform to the corresponding rule, so that the control unit 30 determines the state of the motor according to the x sensing signals, such as whether the motor is locked.
According to an embodiment of the present invention, the motor may be a stepping motor, the stepping motor may be controlled in an open loop, and the control unit 30 may detect whether the stepping motor is locked or not through the structure of the magnetic ring and the plurality of hall detection assemblies, so as to prevent the stepping motor from being continuously in an interference state, and from adversely affecting the operation of the motor and the product.
According to one embodiment of the invention, the rotating component of the motor is a transmission gear or a drive shaft. That is, the magnetic ring 10 may be fixed to a transmission gear or a driving shaft of a motor so that the magnetic ring 10 rotates when the motor rotates.
It should be noted that when the motor drives the door panel of the air conditioner, if the motor and the door panel are connected by a plurality of transmission gears, the magnetic ring 10 is preferably fixed to the transmission gear near the end of the door panel.
Specifically, as shown in fig. 2 to 5, a fixing hole 101 is opened in the middle of the magnetic ring 10 to be riveted with a rotating component of the motor through the fixing hole 101, so as to rotate synchronously with the rotating component. That is, the magnetic ring 10 may be riveted with a transmission gear or a driving shaft of a motor through the fixing hole 101. Alternatively, the magnetic ring 10 may be formed directly as one piece with the transmission gear.
Also, according to an embodiment of the present invention, the hall sensing assembly 20 may be fixed to the air conditioner body. From this, the integral erection is convenient, avoids bringing the line problem of walking.
Further, according to an embodiment of the present invention, as shown in fig. 2 to 5, the number of N magnetic poles and S magnetic poles on the magnetic ring 10 is equal, i.e., P is equal to Q, and the equal number of N magnetic poles and S magnetic poles are arranged at intervals.
That is, the circular magnetic ring 10 may be filled with N magnetic poles and S magnetic poles at intervals, when the motor rotates, the N magnetic poles and the S magnetic poles may alternately pass through each hall sensing element 20, and each hall sensing element 20 outputs a corresponding sensing signal according to the sensed magnetic pole change.
Also, according to an embodiment of the present invention, the P N magnetic poles and the Q S magnetic poles may be arranged in an equal width manner, that is, the width of each N magnetic pole and each S magnetic pole on the magnetic ring 10 is equal.
It should be noted that the widths of the N magnetic pole and the S magnetic pole are as narrow as possible under the premise of ensuring the magnetic field strength, for example, the widths can be 1-2mm, and the magnetic field strength is required to be determined according to the sensing parameters of the hall sensing assembly 20. The magnetic poles on the magnetic ring 10 are N magnetic poles and S magnetic poles, the total number of the N magnetic poles and the S magnetic poles is related to the size of the magnetic ring 10, and the larger the size of the magnetic ring 10 is, the larger the total number of the N magnetic poles and the S magnetic poles is, and the higher the detection sensitivity is.
According to an embodiment of the present invention, the hall sensing element 20 may generate a corresponding sensing signal according to the sensed magnetic pole type, that is, the hall sensing element 20 generates a first sensing signal when facing the N magnetic pole and generates a second sensing signal when facing the S magnetic pole, for example, the first sensing signal may be at a high level and the second sensing signal may be at a low level, the first sensing signal may be at a low level and the second sensing signal may be at a high level, and the level states of the first sensing signal and the second sensing signal may be determined according to the type of the hall sensing element 20.
Thus, when the N-pole and the S-pole alternately pass through the hall sensing assembly 20, the hall sensing assembly 20 outputs a stable high-low level pulse sequence, and the periods of the x-path high-low level pulse sequence are fixed and the same, and the duty ratio is 50%.
Therefore, the N magnetic pole and the S magnetic pole on the magnetic ring 10 can be very dense (the width of the magnetic pole can be 1-2mm), the sensitivity is high, and the frequency of feedback pulse can be improved, so that the detection time is shortened, and the detection sensitivity is improved. And based on the Hall effect, the method is stable and reliable, has low interference, stable pulse waveform and rapid high and low level jump.
According to an embodiment of the present invention, as shown in fig. 2 to 5, the magnetizing surface of the magnetic ring 10 is a peripheral side surface of the magnetic ring or an inner end surface of the magnetic ring. That is, the magnetic ring 10 has two forms of side magnetization and end surface magnetization, as shown in fig. 2 and 4, the side magnetization can fill the N magnetic pole and the S magnetic pole at intervals around the magnetic ring 10, wherein, as shown in fig. 2 and 4, the left side is a top view, and the right side is a front view; as shown in fig. 3 and 5, the end faces are magnetized, and the N magnetic pole and the S magnetic pole can be filled in the end faces of the magnetic ring 10 at intervals. In the embodiment of the invention, the end face can be preferably magnetized, so that the magnetic ring 10 can be made thinner, the material is saved, and the cost is reduced.
According to an embodiment of the present invention, the hall sensing assembly 20, such as a hall sensor, can be packaged in both a chip package and a plug-in package, and the hall sensing assembly 20 is fixed on the PCB and fixed on the air conditioner body through the PCB, and is located on one side of the magnetic ring 10, close to the magnetic ring but not in contact, and within the range that the magnetic field can sense.
As shown in fig. 5, the patch type hall detection component 20 can be matched with the magnetic ring 10 with magnetized end surface; as shown in fig. 4, a hall-effect detection assembly 20 of the plug-in type can be fitted with a magnetic ring 10 that is magnetized on the side. In the embodiment of the present invention, the patch type hall sensing component 20 may be preferred, and the patch type positioning is more accurate in the manufacturing process, so that the sensing error may be reduced, and the adoption of the patch type may facilitate the automatic assembly and increase the assembly speed.
According to an embodiment of the present invention, the x hall sensing assemblies 20 may be staggered by a predetermined angle according to the sum of the numbers of N and S magnetic poles. Specifically, two adjacent hall sensing assemblies 20 may be staggered by a preset angle.
That is to say, x hall detect component 20 can be the distribution of staggering, and the total number of magnetic pole and the width of every magnetic pole that x hall detect component 20 matches magnetic ring 10 stagger the preset angle to make x way induced signal that x hall detect component 20 output respectively stagger the preset phase angle in proper order, thereby, improve detectivity at double. As shown in fig. 4-5, taking three hall detecting elements 20 as an example, a preset angle is staggered between the left hall detecting element 20A and the middle hall detecting element 20B, and a preset angle is also staggered between the middle hall detecting element 20B and the right hall detecting element 20C, and taking clockwise rotation of the magnetic ring 10 as an example, the sensing signal output by the middle hall detecting element 20B lags behind the preset phase angle of the left hall detecting element 20A, and the sensing signal output by the right hall detecting element 20C lags behind the preset phase angle of the middle hall detecting element 20B.
Specifically, the preset angle may be determined according to the following formula:
d＝360°/(P+Q)/x+n*2*360°/(P+Q)
wherein d is a preset angle, P is the number of N magnetic poles, Q is the number of S magnetic poles, x is the number of Hall detection components, and N is any positive integer.
It should be noted that n is any integer greater than or equal to 1, and the specific value is determined as long as the hall detection elements 20 do not interfere with each other in the arrangement space.
Specifically, taking the total number P + Q of the magnetic poles of the magnetic ring 10 as 24, the number x of the hall detection assemblies 20 as 3 as an example, n is 1, and d is 35 ° by calculating the preset angle, that is, two adjacent hall detection assemblies 20 are staggered by 35 °. More specifically, as shown in fig. 4 to 5, the left hall sensing element 20A is staggered by 35 ° from the middle hall sensing element 20B, and the middle hall sensing element 20B is also staggered by 35 ° from the right hall sensing element 20C, accordingly, when the magnetic ring 10 rotates clockwise, the sensing signal output by the middle hall sensing element 20B lags by 60 ° with respect to the sensing signal output by the left hall sensing element 20A, and the sensing signal output by the right hall sensing element 20C lags by 60 ° with respect to the sensing signal output by the middle hall sensing element 20B.
According to one embodiment of the present invention, the hall sensing assembly 20 generates a first sensing signal when facing the N pole and a second sensing signal when facing the S pole, and the x sensing signals constitute y level state combinations, y > x. Wherein, according to an embodiment of the present invention, the number y of level state combinations may be 2 times the number x of sensing signals, i.e. y equals 2 x.
As shown in fig. 6, the control unit 30 includes: a timer 301 and a control chip 302.
The timer 301 is configured to time the duration of each level state combination in the y detection states, and count again when the level state combination changes; the control chip 302 is connected with the timer 301, the control chip 302 is further connected with the x hall detection assemblies 20, and the control chip 302 judges that the motor is locked when the duration time of any combination of the level states is greater than a preset time threshold value.
That is to say, the total number of the magnetic poles of the x hall detection assemblies 20 matching the magnetic ring 10 and the width of each magnetic pole are staggered by a preset angle, that is, the x paths of sensing signals output by the x hall detection assemblies 20 are sequentially staggered by a preset phase angle, so that different level state combinations can be formed at the same time. The control chip 302 can determine whether the motor is locked by detecting whether the duration of each level state combination exceeds a preset time threshold. Therefore, the detection time can be further shortened in multiples by adopting the staggered arrangement of the plurality of Hall detection components, and the effect of reducing the detection time in multiples can be achieved.
Specifically, when the motor rotates, the rotating component of the motor drives the magnetic ring 10 to rotate synchronously, the x hall detection components 20 are fixed, the N magnetic pole and the S magnetic pole on the magnetic ring 10 alternately pass through the x hall detection components 20, and the x hall detection components 20 respectively generate high and low level pulse sequences with duty ratio of 50%.
Two adjacent hall sensing elements 20 are staggered by a predetermined angle according to the above formula d ═ 360 °/(P + Q)/x + n × (2) × 360 °/(P + Q), and accordingly, two adjacent hall sensing elements 20 can obtain waveforms having a phase angle of 180 °/x. Therefore, one period in each waveform can be equally divided into 2x level state combinations, the duration tn of each level state combination is 1/x of the duration of a high level state or a low level state of any signal, namely tn is 1/r/p/x, wherein r is the rotating speed of the magnetic ring 10, when the magnetic ring is arranged on a transmission gear, the rotating speed of the magnetic ring 10 can be calculated according to the rotating speed of a motor and the gear transmission ratio, and when the motor is a stepping motor and the magnetic ring is arranged on a driving shaft, the rotating speed of the magnetic ring 10 can be calculated according to a step angle and a driving pulse period. Therefore, the detection time can be further shortened by times by adopting the staggered arrangement of the plurality of Hall detection components, for example, the detection time can be shortened by times by using more or less Hall sensors.
As shown in fig. 7, taking x as 3 and d as 35 ° as an example, three hall sensing elements 20 may output three waveforms each delayed by 60 ° in phase angle, that is, the output waveform of the hall sensing element 20B lags behind the output waveform of the hall sensing element 20A by 60 °, and the output sensing signal of the hall sensing element 20C lags behind the output waveform of the hall sensing element 20B by 60 °. Thus, one period in each waveform can be equally divided into six level state combinations, namely, 100, 110, 111, 011, 001 and 000, wherein 1 represents high level and 0 represents low level, and the duration tn of each level state combination is 1/3 of the duration of the high level or low level state of any one signal, and tn is 1/r/p/3, wherein r is the rotation speed of the magnetic ring 10, so that the detection sensitivity is improved by three times.
When the motor is blocked and stops rotating, the magnetic pole corresponding to each hall sensing assembly 20 does not change, so the output level of each hall sensing assembly 20 will be continuously high or continuously low. As shown in fig. 8, the motor is locked at time t1 and is recovered at time t2, tn is the duration of each level state combination when no locked rotation occurs, td is a preset time threshold, when locked rotation occurs, the three-way waveform maintains the current level state, and when the duration is greater than td, the motor is determined to be locked rotation. The preset time threshold td is k × tn, and the value range of k is 1-4, preferably 1.5.
As described above, the method for detecting whether the motor is locked up in the embodiment of the present invention is as follows:
when the motor rotates, the control chip 302 starts a detection function, controls the timer 301 to start timing, and the control chip 302 can acquire the sensing signals output by the x hall detection assemblies 20, controls the timer 301 to zero when any one path of sensing signal jumps in high and low levels, and can judge whether the timing value of the timer 301 is greater than a preset time threshold td, if the timing value of the timer 301 is greater than the preset time threshold td, the motor is judged to be locked, and the control chip 302 outputs a locked-rotor protection signal to execute a motor protection action, such as controlling the motor to stop rotating or reversely rotate; if the timing value of the timer 301 is less than or equal to the preset time threshold td, it is determined that the motor is not locked, and the control chip 302 can control the motor to continue to rotate in the forward direction.
In addition, according to an embodiment of the present invention, as shown in fig. 9, the power supply terminals of the x hall sensing assemblies 20 are all connected to a preset power supply VCC, for example, +5V, through a first resistor R1, the ground terminals of the x hall sensing assemblies 20 are grounded, and a first capacitor C1 is connected between the power supply terminals and the ground terminals of the x hall sensing assemblies 20 in parallel, wherein the sensing terminal of each hall sensing assembly 20 senses a magnetic pole change of the magnetic ring, and the output terminal of each hall sensing assembly 20 outputs a corresponding sensing signal.
Further, as shown in fig. 9, the motor stalling detection device of the air conditioner further includes x output circuits 40, the x output circuits 40 are connected with the output ends of the x hall detection assemblies 20, and each output circuit 40 includes: the second resistor R2 and the third resistor R3, the second resistor R2 and the third resistor R3 are connected in series, one end of the second resistor R2 and one end of the third resistor R3 which are connected in series are connected with a preset power VCC, the other end of the second resistor R2 and the other end of the third resistor R3 which are connected in series are connected with the control unit 30, namely the control chip 302, a node is arranged between the second resistor R2 and the third resistor R3 which are connected in series, and the node is connected with the output end of the corresponding Hall detection assembly 20.
The second resistor R2 is a pull-up resistor, and the third resistor R3 is a current-limiting resistor.
That is, each hall sensing element 20 can supply 5V power, so that each hall sensing element 20 can output a high-low level pulse sequence with an amplitude of 5V, each high-low level pulse sequence is provided to the control unit 30 through a corresponding output circuit, the control unit 30 can time the duration of the level state combination of the x high-low level pulse sequences, and determine whether the motor is locked up or not through comparing the time with the preset time threshold.
In summary, according to the motor stalling detection device of the air conditioner provided by the embodiment of the invention, the x hall detection assemblies induce the magnetic pole change of the magnetic ring when the rotating assembly of the motor rotates so as to correspondingly generate x induction signals, and then the control unit judges the state of the motor according to the x induction signals, so that whether the motor stalls can be effectively judged, so that corresponding measures can be taken to adjust the rotation of the motor in time, the damage to the mechanism is avoided, the detection time can be shortened through the magnetic ring and the plurality of hall detection assemblies, and the detection sensitivity is improved. In addition, the device has the advantages of small occupied space, low cost, convenience in installation, long service life, stability and reliability.
A door panel control system of an air conditioner according to another aspect of the present invention will be described with reference to fig. 10 to 12.
Fig. 10 is a block diagram illustrating a door panel control system of an air conditioner according to an embodiment of the present invention. As shown in fig. 10 to 12, the door panel control system of the air conditioner includes; motor 100 and motor stalling detector 200 of air conditioner.
The motor 100 is used to drive the door panel 300 of the air conditioner. Specifically, the cabinet of the air conditioner is provided with a slidable door panel 300, when the air conditioner is started, the control device of the air conditioner can drive the door panel 300 to be opened through the motor 100, and when the air conditioner is closed, the control device of the air conditioner can drive the door panel 300 to be closed through the motor 100, so that the attractiveness of the product is improved. When the number of the door panel 300 is one, the door panel 300 can be opened to one side; when the door panel 300 is two, the door panel 300 can be opened to both sides.
According to one specific example of the present invention, the motor 100 may be a stepper motor.
The motor stalling detection device 200 of the air conditioner is used for detecting whether the motor 100 stalls to judge whether the door panel 300 meets an obstacle.
Specifically, the motor stalling detection device 200 may include a magnetic ring, x hall detection assemblies, and a control unit. The magnetic ring is fixed on a rotating component of the motor 100, and the magnetizing surface of the magnetic ring is filled with P N magnetic poles and Q S magnetic poles, wherein P, Q is an integer greater than 1; the x hall detection assemblies are fixedly arranged close to the magnetic ring, for example, fixedly arranged on the air conditioner body, and sense the magnetic pole change of the magnetic ring when the rotating assembly of the motor 100 rotates to correspondingly generate x paths of sensing signals, wherein x is an integer greater than 1; the control unit judges the state of the motor 100 according to the x induction signals.
Based on this, when the door panel 300 moves towards the door opening direction or the door closing direction, the rotating assembly of the motor 100 drives the magnetic ring to rotate synchronously, the N magnetic pole and the S magnetic pole on the magnetic ring alternately pass through the x hall detection assemblies, the x hall detection assemblies respectively output stable high and low level pulse sequences, and the duty ratio is 50%.
The total number of the magnetic poles of the x Hall detection assemblies matched with the magnetic ring and the width of each magnetic pole are staggered by a preset angle, namely, the x inductive signals respectively output by the x Hall detection assemblies are sequentially staggered by a preset phase angle, so that different level state combinations can be formed at the same time.
When the door panel 300 is blocked, for example, a foreign object blocks the door panel 300 or a finger accidentally extends into the door panel, the motor 100 stops rotating, the magnetic pole corresponding to each hall sensor assembly does not change any more, and the output level of each hall sensor assembly is continuously at a high level or continuously at a low level. The control unit can judge whether the motor is locked up by detecting whether the duration time of each level state combination exceeds a preset time threshold value, so that the door panel control system can judge whether the door panel 300 meets an obstacle.
From this, whether can effectively detect door plant 300 and meet the barrier to shorten check-out time, can obtain the retardant information of door plant fast, accomplish slight touching and can detect retardant effect, thereby in time take corresponding tactics to adjust the motion of door plant, avoid causing the damage to the mechanism, improved user and used the experience satisfaction simultaneously.
In summary, according to the door panel control system of the air conditioner provided by the embodiment of the invention, the motor stalling detection device can be used for judging whether the door panel meets an obstacle, so that whether the door panel meets the obstacle can be effectively judged, corresponding measures can be taken to adjust the movement of the door panel in time, the damage to a mechanism is avoided, the detection time can be shortened through the magnetic ring and the plurality of hall detection assemblies, the detection sensitivity is improved, the damage to a user, such as finger clamping, is prevented, and the user experience is improved. In addition, the device has the advantages of small occupied space, low cost, convenience in installation, long service life, stability and reliability.
In another embodiment of the present invention, an air conditioner is provided, which includes the motor stalling detection device of the air conditioner of the above embodiment.
According to the air conditioner provided by the embodiment of the invention, the motor locked-rotor detection device can effectively judge whether the motor is locked-rotor or not, and has the advantages of high detection sensitivity, small occupied space, low cost, convenience in installation, long service life, stability and reliability.
In another embodiment of the present invention, an air conditioner is provided, which includes the door panel control system of the air conditioner of the above embodiment.
According to the air conditioner provided by the embodiment of the invention, through the door panel control system, whether the door panel meets an obstacle or not is effectively judged, the detection sensitivity is high, the occupied space is small, the cost is low, the installation is convenient, the service life is long, the stability and the reliability are realized, the damage to a user such as finger clamping is prevented, and the user experience is improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
1. The utility model provides a motor locked rotor detection device of air conditioner which characterized in that includes:
the magnetic ring is fixed on a rotating assembly of the motor, and a magnetizing surface of the magnetic ring is filled with P N magnetic poles and Q S magnetic poles, wherein P, Q is an integer larger than 1;
the magnetic ring comprises x Hall detection assemblies, wherein the x Hall detection assemblies are fixedly arranged close to the magnetic ring, the x Hall detection assemblies sense the magnetic pole change of the magnetic ring when a rotating assembly of the motor rotates so as to correspondingly generate x paths of sensing signals, x is an integer larger than 1, the Hall detection assemblies generate first sensing signals when facing an N magnetic pole and generate second sensing signals when facing an S magnetic pole, the x paths of sensing signals construct y level state combinations, and y is larger than x;
the control unit, the control unit with x hall detecting element links to each other, the control unit includes:
a timer for timing the duration of each of the y combinations of level states and for retiming when a change in a combination of level states occurs;
and the control chip is connected with the timer, and the control chip judges the motor stalling when the duration time of any combination of the level states is greater than a preset time threshold value.
2. The motor stalling detection device of the air conditioner according to claim 1, wherein the rotating component of the motor is a transmission gear or a driving shaft.
3. The apparatus as claimed in claim 2, wherein a fixing hole is formed at a middle of the magnetic ring to be riveted to the rotating member of the motor through the fixing hole.
4. The apparatus as claimed in claim 2, wherein the magnetizing surface of the magnetic ring is a peripheral side surface of the magnetic ring or an inner end surface of the magnetic ring.
5. The apparatus of claim 1, wherein the N poles and the S poles are equal in number, and the N poles and the S poles are spaced one by one.
6. The motor stalling detection device of an air conditioner according to claim 1, wherein the P N poles and the Q S poles are arranged in an equal width manner.
7. The apparatus of claim 1, wherein the x hall sensing elements are staggered by a predetermined angle according to a sum of the numbers of the N-poles and the S-poles.
8. The motor stalling detection device of claim 7, wherein the preset angle is determined according to the following formula:
d＝360°/(P+Q)/x+n*2*360°/(P+Q)
wherein d is the preset angle, P is the number of the N magnetic poles, Q is the number of the S magnetic poles, x is the number of the Hall detection assemblies, and N is any positive integer.
9. The apparatus as claimed in claim 1, wherein the power terminals of the x hall sensing elements are connected to a predetermined power source through a first resistor, the ground terminals of the x hall sensing elements are grounded, and a first capacitor is connected in parallel between the power terminals and the ground terminals of the x hall sensing elements, wherein the sensing terminal of each hall sensing element senses the change of the magnetic poles of the magnetic ring, and the output terminal of each hall sensing element outputs a corresponding sensing signal.
10. The apparatus of claim 9, further comprising x output circuits connected to the output terminals of the x hall sensing elements, each output circuit comprising:
the Hall detection device comprises a second resistor and a third resistor which are connected in series, wherein one end of the second resistor and one end of the third resistor which are connected in series are connected with the preset power supply, the other end of the second resistor and the other end of the third resistor which are connected in series are connected with the control unit, a node is arranged between the second resistor and the third resistor which are connected in series, and the node is connected with the output end of the corresponding Hall detection assembly.
11. The apparatus of claim 1, wherein the hall sensing assembly is fixed to the air conditioner body.
12. The apparatus of claim 1, wherein the number y of the level state combinations is 2 times the number x of the induction signals.
13. A door panel control system of an air conditioner is characterized by comprising;
the motor is used for driving the door plate of the air conditioner;
the motor stalling detection device of an air conditioner according to any one of claims 1 to 12, configured to detect whether the motor stalls to determine whether the door panel encounters an obstacle.
14. An air conditioner characterized by comprising the motor stalling detection device of the air conditioner according to any one of claims 1 to 12.
15. An air conditioner characterized by comprising the door panel control system of the air conditioner according to claim 13.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008092.1A CN106705392B (en) | 2017-01-05 | 2017-01-05 | Air conditioner and motor locked rotor detection device and door plant control system thereof |
| PCT/CN2017/118012 WO2018126909A1 (en) | 2017-01-05 | 2017-12-22 | Air conditioner and detection control device and method for moving parts in air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008092.1A CN106705392B (en) | 2017-01-05 | 2017-01-05 | Air conditioner and motor locked rotor detection device and door plant control system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106705392A CN106705392A (en) | 2017-05-24 |
| CN106705392B true CN106705392B (en) | 2022-03-25 |
Family
ID=58908192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710008092.1A Active CN106705392B (en) | 2017-01-05 | 2017-01-05 | Air conditioner and motor locked rotor detection device and door plant control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705392B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328016B (en) * | 2017-05-31 | 2020-05-05 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving part in air conditioner |
| CN107015279B (en) * | 2017-05-31 | 2020-06-05 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving part in air conditioner |
| CN107045146B (en) * | 2017-05-31 | 2020-10-02 | 广东美的制冷设备有限公司 | Air conditioner and detection control device for moving part in air conditioner |
| CN107015280B (en) * | 2017-05-31 | 2020-05-05 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving part in air conditioner |
| CN107015281B (en) * | 2017-05-31 | 2020-09-25 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving part in air conditioner |
| CN107015278B (en) * | 2017-05-31 | 2020-09-25 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving part in air conditioner |
| CN109324238B (en) * | 2017-07-31 | 2020-12-15 | 宁波正奇电子有限公司 | Load locked-rotor endurance test system and test method thereof |
| CN109633509B (en) * | 2018-12-26 | 2021-02-02 | 北京经纬恒润科技股份有限公司 | Motor fault diagnosis system, method and readable storage medium |
| CN109510174B (en) * | 2018-12-29 | 2024-07-02 | 浙江久婵物联科技有限公司 | Intelligent motor system for intelligent lock and motor control method |
| CN110289745B (en) * | 2019-07-25 | 2024-07-09 | 江苏莱克智能电器有限公司 | Brushless motor with variable tone type reversing angle |
| CN111306701B (en) * | 2019-12-17 | 2021-07-13 | 海信（山东）空调有限公司 | Air conditioner and fault detection method and fault detection device thereof |
| CN114060915A (en) * | 2020-08-03 | 2022-02-18 | 海信（山东）空调有限公司 | Air conditioner |
| CN112146160B (en) * | 2020-09-22 | 2022-05-27 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
| CN115681360A (en) * | 2022-10-31 | 2023-02-03 | 南京工程学院 | Overrunning clutch type driving motor |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240267A (en) * | 2002-02-20 | 2003-08-27 | Hitachi Plant Eng & Constr Co Ltd | Dry chamber |
| CN1821792A (en) * | 2006-03-20 | 2006-08-23 | 钟奋强 | Method for detecting paper shredder blocking and rotation and paper shredder having blocking and rotation detector |
| KR100796565B1 (en) * | 2006-11-02 | 2008-01-21 | 주식회사 대우일렉트로닉스 | Apparatus and method for controlling rise and fall of exhaust port for air-conditioner |
| CN202734149U (en) * | 2012-04-28 | 2013-02-13 | 上海理工大学 | Unblocked and blocked condition monitoring device of air-conditioning equipment |
| CN203024337U (en) * | 2012-12-26 | 2013-06-26 | 海信（山东）空调有限公司 | Air conditioner and sliding panel position detection system of air conditioner |
| CN203550129U (en) * | 2013-09-27 | 2014-04-16 | 珠海格力电器股份有限公司 | Door plate safety control device and cabinet air conditioner |
| JP2014167422A (en) * | 2013-02-28 | 2014-09-11 | Asahi Kasei Electronics Co Ltd | Hall electromotive force signal detection circuit and current sensor thereof |
| CN104089376A (en) * | 2014-07-15 | 2014-10-08 | 珠海格力电器股份有限公司 | Method and device for detecting locked rotor of motor |
| CN104110805A (en) * | 2013-07-01 | 2014-10-22 | 广东美的制冷设备有限公司 | Wide-angle air conditioner, head shaking device thereof and initiation control method of air outlet of wide-angle air conditioner |
| CN104153673A (en) * | 2014-08-29 | 2014-11-19 | 南京赛梵电气科技有限公司 | Power-driven translation door driving device based on permanent magnet linear motor |
| CN204115155U (en) * | 2014-08-06 | 2015-01-21 | 美的集团股份有限公司 | A kind of cabinet air conditioner and sliding door detection control apparatus thereof |
| CN104515248A (en) * | 2013-09-27 | 2015-04-15 | 珠海格力电器股份有限公司 | Door plate safety control method and device and cabinet air conditioner |
| CN105509239A (en) * | 2015-12-18 | 2016-04-20 | 宁波奥克斯空调有限公司 | Air guide door control method for cabinet air conditioner |
| CN205402931U (en) * | 2016-02-22 | 2016-07-27 | 青岛海尔空调器有限总公司 | Wall -mounted air conditioner indoor unit |
| CN207073919U (en) * | 2017-01-05 | 2018-03-06 | 广东美的制冷设备有限公司 | Air conditioner and its motor rotation blockage detection means and door-plate control system |
-
2017
- 2017-01-05 CN CN201710008092.1A patent/CN106705392B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003240267A (en) * | 2002-02-20 | 2003-08-27 | Hitachi Plant Eng & Constr Co Ltd | Dry chamber |
| CN1821792A (en) * | 2006-03-20 | 2006-08-23 | 钟奋强 | Method for detecting paper shredder blocking and rotation and paper shredder having blocking and rotation detector |
| KR100796565B1 (en) * | 2006-11-02 | 2008-01-21 | 주식회사 대우일렉트로닉스 | Apparatus and method for controlling rise and fall of exhaust port for air-conditioner |
| CN202734149U (en) * | 2012-04-28 | 2013-02-13 | 上海理工大学 | Unblocked and blocked condition monitoring device of air-conditioning equipment |
| CN203024337U (en) * | 2012-12-26 | 2013-06-26 | 海信（山东）空调有限公司 | Air conditioner and sliding panel position detection system of air conditioner |
| JP2014167422A (en) * | 2013-02-28 | 2014-09-11 | Asahi Kasei Electronics Co Ltd | Hall electromotive force signal detection circuit and current sensor thereof |
| CN104110805A (en) * | 2013-07-01 | 2014-10-22 | 广东美的制冷设备有限公司 | Wide-angle air conditioner, head shaking device thereof and initiation control method of air outlet of wide-angle air conditioner |
| CN203550129U (en) * | 2013-09-27 | 2014-04-16 | 珠海格力电器股份有限公司 | Door plate safety control device and cabinet air conditioner |
| CN104515248A (en) * | 2013-09-27 | 2015-04-15 | 珠海格力电器股份有限公司 | Door plate safety control method and device and cabinet air conditioner |
| CN104089376A (en) * | 2014-07-15 | 2014-10-08 | 珠海格力电器股份有限公司 | Method and device for detecting locked rotor of motor |
| CN204115155U (en) * | 2014-08-06 | 2015-01-21 | 美的集团股份有限公司 | A kind of cabinet air conditioner and sliding door detection control apparatus thereof |
| CN104153673A (en) * | 2014-08-29 | 2014-11-19 | 南京赛梵电气科技有限公司 | Power-driven translation door driving device based on permanent magnet linear motor |
| CN105509239A (en) * | 2015-12-18 | 2016-04-20 | 宁波奥克斯空调有限公司 | Air guide door control method for cabinet air conditioner |
| CN205402931U (en) * | 2016-02-22 | 2016-07-27 | 青岛海尔空调器有限总公司 | Wall -mounted air conditioner indoor unit |
| CN207073919U (en) * | 2017-01-05 | 2018-03-06 | 广东美的制冷设备有限公司 | Air conditioner and its motor rotation blockage detection means and door-plate control system |
Non-Patent Citations (1)
| Title |
|---|
| 一种新型智能设备及其远程故障诊断技术研究;徐猛;《计算机仿真》;20040229;第21卷(第2期);98-101,34 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106705392A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106705392B (en) | Air conditioner and motor locked rotor detection device and door plant control system thereof | |
| CN106679100B (en) | Air conditioner and door plate detection device thereof | |
| CN107015280B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| CN107015279B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| CN107045146B (en) | Air conditioner and detection control device for moving part in air conditioner | |
| CN107328016B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| CN100426649C (en) | Inverter circuit and compressor | |
| US8310185B2 (en) | Correction of counting errors in the evaluation of current ripples in a DC motor | |
| US8558495B2 (en) | Sensorless BLDC motor control by comparing instantaneous and average BEMF voltages | |
| JP2011050200A (en) | Mobile system | |
| CN109247054B (en) | Method and apparatus for measuring back electromotive force of stepping motor and integrated circuit | |
| ITTO980848A1 (en) | PROCEDURE AND DEVICE FOR DETECTING THE ROTATION SPEED OF A DIRECT CURRENT ELECTRIC MOTOR PILOTED WITH A SIGNAL OF | |
| CN105790652A (en) | Hall signal identification method used for motor control system and apparatus thereof | |
| CN102549908B (en) | Method and device for monitoring and correcting a sensorless rotor position detection in permanently excited motors | |
| WO2017152040A1 (en) | Electrical motor coil short detection and protection | |
| US9897468B2 (en) | Position detection device | |
| CN107166656B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| US20020057084A1 (en) | Method and device for determining the actual reversal of a follow-on rotary drive | |
| WO2018126910A1 (en) | Air conditioner, detection and control device for use with moving member in air conditioner and method | |
| CN107015278B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| CN107015281B (en) | Air conditioner and detection control device and method for moving part in air conditioner | |
| CN206531937U (en) | Motor rotation blockage detection means and the air conditioner with it | |
| WO2018126909A1 (en) | Air conditioner and detection control device and method for moving parts in air conditioner | |
| CN206410292U (en) | Air conditioner and its door-plate detection means | |
| US20190310068A1 (en) | Apparatus and method for obtaining information on rotation of dc commutator motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |