CN111256331A - Air conditioner and control method and control device thereof - Google Patents
Air conditioner and control method and control device thereof Download PDFInfo
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- CN111256331A CN111256331A CN202010060365.9A CN202010060365A CN111256331A CN 111256331 A CN111256331 A CN 111256331A CN 202010060365 A CN202010060365 A CN 202010060365A CN 111256331 A CN111256331 A CN 111256331A
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
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Abstract
The invention provides an air conditioner and a control method and a control device thereof, wherein the method comprises the following steps: acquiring the current power supply voltage of the air conditioner; and determining that the current power supply voltage is less than or equal to a first voltage threshold value, and adjusting the effective power supply voltage of the electric load in the air conditioner. The control method can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method of an air conditioner, a control device of the air conditioner and the air conditioner with the control device.
Background
At present, when the air conditioner operates in a heating mode and is powered by ultralow voltage, the output power of electronic devices is overlarge, and even the communication between an indoor unit and an outdoor unit is influenced, so that the reliability of the operation of the air conditioner is reduced.
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, a first objective of the present invention is to provide a control method for an air conditioner, which can adjust the voltage of an electric load at a low voltage, reduce the power consumption of the electric load, and improve the reliable operation of the whole air conditioner at the low voltage.
A second object of the present invention is to provide a control device for an air conditioner.
A third object of the present invention is to provide an air conditioner.
A fourth object of the invention is to propose a computer-readable storage medium.
In order to achieve the above object, a first embodiment of the present invention provides a control method for an air conditioner, including the following steps: acquiring the current power supply voltage of the air conditioner; and determining that the current power supply voltage is less than or equal to a first voltage threshold value, and reducing the effective power supply voltage supplied to the electric load in the air conditioner.
According to the control method of the air conditioner, the current power supply voltage of the air conditioner is obtained in real time in the running process of the air conditioner, and the effective power supply voltage supplied to the electric load in the air conditioner is reduced when the current power supply voltage is determined to be smaller than or equal to the first voltage threshold. Therefore, the method can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
In addition, the control method of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the present invention, the reducing the effective supply voltage supplied to the load in the air conditioner includes: and reducing the effective power supply voltage supplied to the electric load according to the type of the electric load.
According to an embodiment of the present invention, the reducing the effective supply voltage supplied to the electric load according to the type of the electric load includes: acquiring a voltage reduction mode according to the type of the electric load; and determining to adopt a first voltage reduction mode, and reducing the effective power supply voltage supplied to the electric load according to the starting control instruction of the electric load.
According to an embodiment of the present invention, reducing an effective power supply voltage supplied to the electrical load according to a start control command of the electrical load includes: and determining that a starting control instruction of the electric load is received, supplying normal effective voltage to the electric load, delaying for preset time, and reducing effective power supply voltage supplied to the electric load by a first adjustment amount.
According to an embodiment of the present invention, the reducing the effective supply voltage supplied to the electric load according to the type of the electric load further comprises: and determining to adopt a second voltage reduction mode to reduce the effective power supply voltage supplied to the electric load.
According to one embodiment of the invention, the type of the electric load is a relay module, a first voltage reduction mode is adopted, and the type of the electric load is a non-relay module, and a second voltage reduction mode is adopted.
According to one embodiment of the invention, the effective power supply voltage supplied to the electric load by the switching power supply unit is reduced by adjusting the target control voltage signal output to the feedback unit by the control module, wherein the switching power supply unit is used for converting the alternating input power into the direct current to supply to the electric load.
According to an embodiment of the present invention, the effective power supply voltage supplied to the electrical load by the adjusting unit is reduced by reducing the operating duty cycle of the internal switching component of the adjusting unit and further reducing the operating frequency, wherein the adjusting unit adjusts the dc power output by the switching power supply unit to supply the adjusted dc power to the electrical load.
In order to achieve the above object, a second embodiment of the present invention provides a control device for an air conditioner, including: the voltage detection module is used for detecting the current power supply voltage of the air conditioner; the voltage adjusting module is used for adjusting the effective voltage of the electric load; and the control module is connected with the voltage detection module and the voltage adjustment module and is used for controlling the voltage adjustment module to adjust the effective power supply voltage of the power load in the air conditioner when the current power supply voltage is determined to be less than or equal to a first voltage threshold value.
According to the control device of the air conditioner, the current power supply voltage of the air conditioner is detected in real time through the voltage detection module in the operation process of the air conditioner, and the control module controls the voltage adjustment module when the current power supply voltage is determined to be smaller than the first voltage threshold value, so that the effective power supply voltage of a power load in the air conditioner is adjusted. Therefore, the device can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
In addition, the control device of the air conditioner according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the control module is configured to control the voltage adjustment module according to a type of the electrical load, so as to reduce an effective power supply voltage supplied to the electrical load.
According to an embodiment of the present invention, the control module is configured to obtain a voltage reduction mode according to a type of the electrical load, determine to adopt a first voltage reduction mode, and reduce an effective power supply voltage supplied to the electrical load according to a start control instruction of the electrical load.
According to an embodiment of the present invention, the control module is configured to determine that a start control instruction of the electrical load is received, supply a normal effective voltage to the electrical load, and delay a preset time, and then control the voltage adjustment module to reduce an effective power supply voltage supplied to the electrical load by a first adjustment amount.
According to an embodiment of the present invention, the control module is further configured to determine to reduce the effective supply voltage supplied to the electrical load by using a second voltage reduction mode.
According to one embodiment of the invention, the type of the electric load is a relay module, a first voltage reduction mode is adopted, and the type of the electric load is a non-relay module, and a second voltage reduction mode is adopted.
According to one embodiment of the invention, the voltage regulation module comprises: a switching power supply unit for converting an alternating input power into a direct current to supply to the power load; and the feedback unit is used for adjusting a target control voltage signal output to the feedback unit under the control of the control module so as to reduce the effective power supply voltage supplied to the electric load by the switching power supply unit.
According to another embodiment of the present invention, the voltage adjustment module includes: a switching power supply unit for converting an alternating input power into a direct current; and the adjusting unit is used for reducing the working duty ratio of the internal switch assembly so as to reduce the working frequency, so that the effective power supply voltage supplied to the electric load by the household adjusting unit is reduced.
In order to achieve the above object, a third embodiment of the present invention provides an air conditioner, including the control device of the air conditioner.
According to the air conditioner provided by the embodiment of the invention, through the control device of the air conditioner, the voltage of the electric load under low voltage can be adjusted, the power consumption of the electric load is reduced, and the reliable operation of the whole air conditioner under low voltage is improved.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the control method of the air conditioner described above.
By executing the control method of the air conditioner, the computer readable storage medium of the embodiment of the invention can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an adjusting unit according to an embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating a control apparatus of an air conditioner according to an embodiment of the present invention;
fig. 4 is a block diagram schematically illustrating a control apparatus of an air conditioner according to an embodiment of the present invention;
fig. 5 is a block schematic diagram of a control apparatus of an air conditioner according to another embodiment of the present invention;
fig. 6 is a schematic view of a control apparatus of an air conditioner according to an embodiment of the present invention;
fig. 7 is a block schematic diagram of an air conditioner 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.
A control method of an air conditioner, a control device of an air conditioner, and an air conditioner having the control device according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, the control method of an air conditioner according to an embodiment of the present invention may include the steps of:
and S1, acquiring the current power supply voltage of the air conditioner.
And S2, determining that the current power supply voltage is less than or equal to the first voltage threshold value, and reducing the effective power supply voltage supplied to the electric load in the air conditioner. The first voltage threshold may be calibrated according to actual conditions, for example, the first voltage threshold may be 190V, and the normal operating voltage is 220V.
Specifically, in the process of operating the air conditioner, when the current power supply voltage of the air conditioner is unstable and is lower than the normal power supply voltage, the power load in the air conditioner still maintains the original power supply output, which may cause large energy consumption, and even may affect the normal operation of the other devices in the air conditioner, for example, the communication between the indoor unit and the outdoor unit, so that the effective voltage of the power load in the air conditioner needs to be adjusted. Specifically, the current power supply voltage of the air conditioner is detected in real time, and the magnitude relation between the current power supply voltage and a first voltage threshold is judged, wherein when the current power supply voltage is smaller than or equal to the first voltage threshold, the current power supply voltage is in a low voltage state, in order to reduce the energy consumption of the air conditioner and ensure the stable operation of the air conditioner, the effective power supply voltage of an electric load in the air conditioner needs to be reduced, and for example, the electric load can be adjusted according to the linear relation between the voltage difference value between the pre-stored current power supply voltage and the normal power supply voltage and the effective voltage of the electric load; when the current power supply voltage is larger than the first voltage threshold value, the effective power supply voltage of the electric load in the air conditioner is kept unchanged.
According to one embodiment of the present invention, reducing the effective supply voltage to a load in an air conditioner includes: depending on the type of the electrical load, the effective supply voltage to the electrical load is reduced. Wherein, the type of power consumption load can include relay module and non-relay module, and the type of different power consumption loads adopts different step-down modes, when the power consumption load is relay module, adopts first step-down mode, when the power consumption load is non-relay module, adopts the second step-down mode. For example, when the electric load is a relay or a mos tube, the effective power supply voltage supplied to the relay or the mos tube can be reduced by reducing the duty ratio of the pulse signal; when the electric load is a stepping motor or a display module, the effective power supply voltage supplied to the stepping motor or the display module is reduced by reducing the control voltage signal.
According to an embodiment of the present invention, reducing the effective supply voltage supplied to the electric load includes, depending on the type of the electric load: acquiring a voltage reduction mode according to the type of the electric load; and determining to adopt a first voltage reduction mode, and reducing the effective power supply voltage supplied to the electric load according to the starting control instruction of the electric load.
Further, according to an embodiment of the present invention, a method for reducing an effective power supply voltage supplied to an electrical load according to a start control command of the electrical load includes: and determining that a starting control instruction of the electric load is received, supplying normal effective voltage to the electric load, delaying for preset time, and reducing the effective power supply voltage supplied to the electric load by a first adjustment amount. The preset time and the first adjustment amount may be calibrated according to an actual situation, for example, the preset time may be 0.5 s. The normal effective voltage may be an effective voltage output when the control module outputs a pulse signal with a full-period conduction 100% duty ratio (that is, the duty ratio is 1) to the electric load, and the first adjustment amount may be an effective voltage output when the control module outputs a pulse signal adjusted to 60% -80% duty ratio (that is, the duty ratio is a value between 0.6 and 0.8) to the electric load.
According to an embodiment of the present invention, the effective power supply voltage supplied to the electrical load by the adjusting unit is reduced by reducing the duty cycle of the internal switching component of the adjusting unit and further reducing the operating frequency, wherein the adjusting unit adjusts the dc power output by the switching power supply unit to supply the adjusted dc power to the electrical load.
Specifically, when the current power supply voltage of the air conditioner is smaller than a first voltage threshold value, the air conditioner is controlled to enter an ultra-low voltage operation mode. When the power load is a relay module, for example, the power load is a relay, after receiving an opening control instruction of the relay, the control module outputs a pulse signal with a duty ratio of 100% in a full-period conduction mode, that is, the control module continuously outputs a pulse signal of a high-level signal to the relay so as to continuously conduct the relay for a preset time (for example, 0.5s), and after the preset time, the duty ratio of the pulse signal is reduced by a first adjustment amount, for example, the duty ratio of the pulse signal is reduced to a value between 0.6 or 0.8 or 0.6 and 0.8 so as to reduce the power consumption of a driving coil of the relay.
For example, the working duty ratio of the internal switch component of the adjusting unit can be reduced to reduce the working frequency, so as to reduce the effective power supply voltage supplied to the relay by the adjusting unit. As shown in fig. 6, the adjusting unit may include: the first end of the switch assembly is connected with the output end of the switch power supply unit, the control end of the switch assembly is connected with the control module, and the input end of the rectification module is connected with the alternating current input power supply; one end of the first inductor is connected with the second end of the switch assembly, and the other end of the first inductor is connected with an electric load; and the cathode of the diode is connected with one end of the first inductor, and the anode of the diode is grounded. Wherein, the switch component can be mos tube, silicon controlled rectifier, relay, etc.
The effective supply voltage after being reduced by the first adjustment amount is: in order to ensure the minimum value that the relay cannot be disconnected, when the effective power supply voltage of the relay is controlled to be normal effective voltage, the purpose of delaying the preset time is to ensure that the relay can be completely closed, and in the subsequent process of adjusting the effective voltage of the relay, the relay cannot be disconnected, so that the normal operation of the air conditioner is ensured.
In addition, the relay may also be replaced by a MOS transistor or a thyristor, and is used for turning on or off according to a target duty ratio, taking an MOS transistor as an example, as shown in fig. 2, when a high level is input, the MOS transistor is turned on, and when a low level is input, the MOS transistor is turned off, where a/(a + B) in fig. 2 is a duty ratio, and fig. 2 includes on/off schematic diagrams when two different duty ratios are included.
According to another embodiment of the present invention, reducing the effective supply voltage supplied to the electrical load further comprises, depending on the type of the electrical load: and determining to adopt a second voltage reduction mode to reduce the effective power supply voltage supplied to the electric load.
Further, according to an embodiment of the present invention, the control module adjusts the target control voltage signal output to the feedback unit to reduce an effective power supply voltage supplied to the electrical load by the switching power supply unit, wherein the switching power supply unit is configured to convert an ac input power into a dc power to supply to the electrical load.
Specifically, when the electric load is a non-relay module, for example, the electric load is a stepping motor or a display module, the target control voltage signal output to the feedback unit is adjusted by the control module in the second voltage reduction mode to reduce the effective power supply voltage supplied to the electric load.
Example one: when the non-relay module is a stepping motor, the control module outputs a reduced target control voltage signal to reduce the power supply voltage to the stepping motor (the power supply voltage under the normal condition is 12V/24V), so that the energy consumption of the stepping motor is reduced. For example, a corresponding relationship between an adjustment value of the target control signal and a voltage difference between the current supply voltage and a first voltage threshold is stored in advance, the prestored corresponding relationship is retrieved according to the voltage difference between the current supply voltage and the first voltage threshold, the adjustment value of the target control voltage signal is obtained, and the supply voltage of the stepping motor is adjusted according to the adjusted target control signal.
Example two: when the non-relay module is the display module, the control module outputs the reduced target control voltage signal to reduce the power supply voltage to the display module (the power supply voltage under the normal condition is 5V), for example, the power supply voltage of the double eight nixie tubes is adjusted to reduce the display brightness of the display panel LED, so that the purpose of prompting low voltage is realized, and meanwhile, the power consumption of the display module is reduced. For example, the corresponding relationship between the voltage difference between the current power supply voltage and the first voltage threshold and the adjustment value of the target control voltage signal and the corresponding relationship between the target control voltage signal and the display brightness of the display panel LED are preset, the adjustment value of the target control voltage signal is obtained according to the voltage difference, and the display brightness is adjusted according to the relationship between the adjusted target control voltage signal and the display brightness of the display panel LED.
In conclusion, the power supply voltage when the air conditioner operates is in the low-voltage power supply condition, the power consumption of the power load is reduced, and the normal operation of the rest components of the air conditioner is ensured, so that the normal communication of the indoor unit and the outdoor unit is realized, and the reliable operation of the system is further ensured.
In summary, according to the control method of the air conditioner in the embodiment of the present invention, in the operation process of the air conditioner, the current power supply voltage of the air conditioner is obtained in real time, and when it is determined that the current power supply voltage is less than or equal to the first voltage threshold, the effective power supply voltage supplied to the electrical load in the air conditioner is reduced. Therefore, the method can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
Fig. 3 is a block diagram schematically illustrating a control apparatus of an air conditioner according to an embodiment of the present invention.
As shown in fig. 3, the control apparatus of an air conditioner according to an embodiment of the present invention may include: a voltage detection module 10, a voltage adjustment module 20 and a control module 30.
The voltage detection module 10 is configured to detect a current power supply voltage of the air conditioner. The voltage adjusting module 20 is used for adjusting the effective voltage of the electric load. The control module 30 is connected to the voltage detection module 10 and the voltage adjustment module 20, and the control module 30 is configured to control the voltage adjustment module 20 to adjust an effective power supply voltage of an electrical load in the air conditioner when it is determined that the current power supply voltage is less than or equal to the first voltage threshold.
Specifically, in the process of operating the air conditioner, when the current power supply voltage of the air conditioner is unstable and is lower than the normal power supply voltage, the power load in the air conditioner still maintains the original power supply output, which may cause large energy consumption, and even may affect the normal operation of the other devices in the air conditioner, for example, the communication between the indoor unit and the outdoor unit, so that the effective voltage of the power load in the air conditioner needs to be adjusted. Specifically, the voltage detection module 10 detects the current power supply voltage of the air conditioner in real time, and the control module 30 determines the magnitude relationship between the current power supply voltage and a first voltage threshold, wherein when the current power supply voltage is less than or equal to the first voltage threshold, it indicates that the current power supply voltage is in a low voltage state, and in order to reduce energy consumption of the air conditioner and ensure stable operation of the air conditioner, the voltage adjustment module 20 may reduce the effective power supply voltage of the electric load in the air conditioner, for example, the electric load may be adjusted according to a linear relationship between a voltage difference between the pre-stored current power supply voltage and the normal power supply voltage and the effective voltage of the electric load; when the current power supply voltage is larger than the first voltage threshold value, the effective power supply voltage of the electric load in the air conditioner is kept unchanged.
According to an embodiment of the present invention, the control module 30 is configured to control the voltage adjustment module 20 to reduce the effective supply voltage supplied to the electrical load according to the type of the electrical load. Wherein, the type of power consumption load can include relay module and non-relay module, and the type of different power consumption loads adopts different step-down modes, when the power consumption load is relay module, adopts first step-down mode, when the power consumption load is non-relay module, adopts the second step-down mode. For example, when the electric load is a relay or a mos tube, the effective power supply voltage supplied to the relay or the mos tube can be reduced by reducing the duty ratio of the pulse signal; when the electric load is a stepping motor or a display module, the effective power supply voltage supplied to the stepping motor or the display module is reduced by reducing the control voltage signal.
According to an embodiment of the present invention, the control module 30 is configured to obtain a voltage reduction mode according to a type of the electrical load, determine to adopt the first voltage reduction mode, and reduce an effective power supply voltage supplied to the electrical load according to a start control instruction of the electrical load.
Further, according to an embodiment of the present invention, the control module 30 is configured to determine that a start control command of the electrical load is received, supply the electrical load with a normal effective voltage, and delay for a preset time, control the voltage adjustment module to decrease the effective supply voltage supplied to the electrical load by a first adjustment amount. The preset time and the first adjustment amount may be calibrated according to an actual situation, for example, the preset time may be 0.5 s. The normal effective voltage may be an effective voltage output when the control module outputs a pulse signal with a full-period conduction 100% duty ratio (that is, the duty ratio is 1) to the electric load, and the first adjustment amount may be an effective voltage output when the control module outputs a pulse signal adjusted to 60% -80% duty ratio (that is, the duty ratio is a value between 0.6 and 0.8) to the electric load.
According to an embodiment of the present invention, the effective power supply voltage supplied to the electrical load by the adjusting unit is reduced by reducing the duty cycle of the internal switching component of the adjusting unit and further reducing the operating frequency, wherein the adjusting unit adjusts the dc power output by the switching power supply unit to supply the adjusted dc power to the electrical load.
Specifically, when the current power supply voltage of the air conditioner is smaller than a first voltage threshold value, the air conditioner is controlled to enter an ultra-low voltage operation mode. When the power load is a relay module, for example, the power load is a relay, after receiving an opening control instruction of the relay, the control module outputs a pulse signal with a duty ratio of 100% in a full-period conduction mode, that is, the control module continuously outputs a pulse signal of a high-level signal to the relay so as to continuously conduct the relay for a preset time (for example, 0.5s), and after the preset time, the duty ratio of the pulse signal is reduced by a first adjustment amount, for example, the duty ratio of the pulse signal is reduced to a value between 0.6 or 0.8 or 0.6 and 0.8 so as to reduce the power consumption of a driving coil of the relay.
For example, the working duty ratio of the internal switch component of the adjusting unit can be reduced to reduce the working frequency, so as to reduce the effective power supply voltage supplied to the relay by the adjusting unit. As shown in fig. 6, the adjusting unit may include: the first end of the switch assembly is connected with the output end of the switch power supply unit, the control end of the switch assembly is connected with the control module, and the input end of the rectification module is connected with the alternating current input power supply; one end of the first inductor is connected with the second end of the switch assembly, and the other end of the first inductor is connected with an electric load; and the cathode of the diode is connected with one end of the first inductor, and the anode of the diode is grounded. Wherein, the switch component can be mos tube, silicon controlled rectifier, relay, etc.
The effective supply voltage after being reduced by the first adjustment amount is: in order to ensure the minimum value that the relay cannot be disconnected, when the effective power supply voltage of the relay is controlled to be normal effective voltage, the purpose of delaying the preset time is to ensure that the relay can be completely closed, and in the subsequent process of adjusting the effective voltage of the relay, the relay cannot be disconnected, so that the normal operation of the air conditioner is ensured.
According to another embodiment of the present invention, the control module 30 is further configured to determine to reduce the effective supply voltage supplied to the electrical load by using the second voltage reduction mode.
Specifically, when the electric load is a non-relay module, for example, the electric load is a stepping motor or a display module, the target control voltage signal output to the feedback unit is adjusted by the control module in the second voltage reduction mode to reduce the effective power supply voltage supplied to the electric load.
Example one: when the non-relay module is a stepping motor, the control module outputs a reduced target control voltage signal to reduce the power supply voltage to the stepping motor (the power supply voltage under the normal condition is 12V/24V), so that the energy consumption of the stepping motor is reduced. For example, a corresponding relationship between an adjustment value of the target control signal and a voltage difference between the current supply voltage and a first voltage threshold is stored in advance, the prestored corresponding relationship is retrieved according to the voltage difference between the current supply voltage and the first voltage threshold, the adjustment value of the target control voltage signal is obtained, and the supply voltage of the stepping motor is adjusted according to the adjusted target control signal.
Example two: when the non-relay module is the display module, the control module outputs the reduced target control voltage signal to reduce the power supply voltage to the display module (the power supply voltage under the normal condition is 5V), for example, the power supply voltage of the double eight nixie tubes is adjusted to reduce the display brightness of the display panel LED, so that the purpose of prompting low voltage is realized, and meanwhile, the power consumption of the display module is reduced. For example, the corresponding relationship between the voltage difference between the current power supply voltage and the first voltage threshold and the adjustment value of the target control voltage signal and the corresponding relationship between the target control voltage signal and the display brightness of the display panel LED are preset, the adjustment value of the target control voltage signal is obtained according to the voltage difference, and the display brightness is adjusted according to the relationship between the adjusted target control voltage signal and the display brightness of the display panel LED. According to an embodiment of the present invention, as shown in fig. 4, the voltage adjusting module 20 may include: the power supply comprises a switching power supply unit 21 and a feedback unit 22, wherein the input end of the switching power supply unit 21 is connected with an alternating current input power supply, and the output end of the switching power supply unit 21 is connected with an electric load; a first end of the feedback unit 22 is connected to the control module 30, a second end of the feedback unit 22 is connected to an output end of the switching power supply unit 21, a third end of the feedback unit 22 is connected to the switching power supply unit 21, and the feedback unit 22 is configured to control the switching power supply unit 21 according to an output voltage of the switching power supply unit 21 at a previous time under the control of the control module 30, so as to adjust a current output voltage of the switching power supply unit 21.
That is to say, the switching power supply unit 21 converts the ac input power into the dc power to supply to the electrical load, when the current power supply voltage is less than or equal to the first voltage threshold, the control module 30 outputs an adjustment voltage signal to the feedback unit 22, and when the feedback unit 22 receives the adjustment signal, the feedback unit adjusts the current output voltage according to the output voltage of the switching power supply 21 at the previous moment, for example, when the current output voltage is the normal effective voltage, the feedback unit 22 reduces the effective power supply voltage supplied to the electrical load by the first adjustment amount from the output voltage of the switching power supply 21, and feeds the reduced effective power supply back to the output end of the switching power supply 21 to supply power to the electrical load.
According to another embodiment of the present invention, as shown in fig. 5, the voltage adjusting module 20 includes: the device comprises a switching power supply unit 21 and an adjusting unit 22, wherein the input end of the switching power supply unit 21 is connected with an alternating current input power supply; the first end of the adjusting unit 23 is connected with the output end of the switching power supply unit 21, the second end of the adjusting unit 23 is connected with the electric load, the third end of the adjusting unit 23 is connected with the control module 30, and the adjusting unit 23 is used for reducing the working duty ratio of the internal switch assembly under the control of the control module 30 so as to reduce the working frequency and further reduce the effective supply voltage supplied to the electric load by the user adjusting unit 23.
That is to say, the switching power supply unit 21 converts the ac input power into the dc power to supply to the electrical load, when the current power supply voltage is less than or equal to the first voltage threshold, the control module 30 outputs the adjustment voltage signal to the adjustment unit 23, and when the adjustment unit 23 receives the adjustment signal, the adjustment unit 23 reduces the operating frequency by adjusting the duty cycle of the switching element, so as to reduce the output voltage to the switching power supply unit 21, and supply power to the electrical load according to the adjusted effective voltage.
According to an embodiment of the present invention, as shown in fig. 6, the adjusting unit 23 includes: a switch component 231, a first end of which is connected with the output end of the switching power supply unit 21, a control end of the switch component 231 is connected with the control module 30, wherein an input end of the rectification module is connected with the alternating current input power supply; one end of a first inductor L1 is connected to the second end of the switch component 211, and the other end of the first inductor L1 is connected to an electric load; a diode D1, a cathode of the diode D1 is connected to one end of the first inductor L1, and an anode of the diode D1 is grounded. The switch component 231 may be a mos tube, a thyristor, a relay, or the like.
It should be noted that, for details not disclosed in the control device of the air conditioner in the embodiment of the present invention, please refer to details disclosed in the control method of the air conditioner in the embodiment of the present invention, which are not repeated herein.
According to the control device of the air conditioner, the current power supply voltage of the air conditioner is detected in real time through the voltage detection module in the operation process of the air conditioner, and the control module controls the voltage adjustment module when the current power supply voltage is determined to be smaller than the first voltage threshold value, so that the effective power supply voltage of a power load in the air conditioner is adjusted. Therefore, the device can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
Fig. 7 is a block schematic diagram of an air conditioner according to an embodiment of the present invention.
As shown in fig. 7, the air conditioner 100 according to the embodiment of the present invention may include: the control device 110 of the air conditioner described above.
According to the air conditioner provided by the embodiment of the invention, through the control device of the air conditioner, the voltage of the electric load under low voltage can be adjusted, the power consumption of the electric load is reduced, and the reliable operation of the whole air conditioner under low voltage is improved.
Furthermore, an embodiment of the present invention also proposes a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the control method of the air conditioner described above.
By executing the control method of the air conditioner, the computer readable storage medium of the embodiment of the invention can adjust the voltage of the electric load under low voltage, reduce the power consumption of the electric load and simultaneously improve the reliable operation of the whole air conditioner under low voltage.
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.
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.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. 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 (11)
1. A control method of an air conditioner is characterized by comprising the following steps:
acquiring the current power supply voltage of the air conditioner;
and determining that the current power supply voltage is less than or equal to a first voltage threshold value, and reducing the effective power supply voltage supplied to the electric load in the air conditioner.
2. The method of claim 1, wherein the reducing the effective supply voltage to the load in the air conditioner comprises:
and reducing the effective power supply voltage supplied to the electric load according to the type of the electric load.
3. The control method of an air conditioner according to claim 2, wherein said reducing an effective supply voltage supplied to the electric load according to the type of the electric load comprises:
acquiring a voltage reduction mode according to the type of the electric load;
and determining to adopt a first voltage reduction mode, and reducing the effective power supply voltage supplied to the electric load according to the starting control instruction of the electric load.
4. The method of claim 3, wherein reducing the effective supply voltage to the electrical load according to the turn-on control command of the electrical load comprises:
and determining that a starting control instruction of the electric load is received, supplying normal effective voltage to the electric load, delaying for preset time, and reducing effective power supply voltage supplied to the electric load by a first adjustment amount.
5. The control method of an air conditioner according to claim 3, wherein said reducing an effective supply voltage supplied to said electric load according to a type of said electric load further comprises:
and determining to adopt a second voltage reduction mode to reduce the effective power supply voltage supplied to the electric load.
6. The control method of an air conditioner according to claim 3, wherein the type of the electric load is a relay module and a first step-down manner is adopted, and the type of the electric load is a non-relay module and a second step-down manner is adopted.
7. The control method of an air conditioner according to claim 5,
the target control voltage signal output to the feedback unit is adjusted through the control module so as to reduce the effective power supply voltage supplied to the electric load by the switch power supply unit, wherein the switch power supply unit is used for converting alternating current input power into direct current to supply the electric load.
8. The method as claimed in claim 4, wherein the effective supply voltage supplied to the electrical load by the adjusting unit is reduced by reducing the duty cycle of the internal switching components of the adjusting unit and further reducing the operating frequency, wherein the adjusting unit adjusts the dc power outputted from the switching power supply unit to supply the adjusted dc power to the electrical load.
9. A control apparatus of an air conditioner, comprising:
the voltage detection module is used for detecting the current power supply voltage of the air conditioner;
the voltage adjusting module is used for adjusting the effective power supply voltage supplied to the electric load of the air conditioner; and
and the control module is used for determining that the current power supply voltage is less than or equal to a first voltage threshold value and controlling the voltage adjusting module to reduce the effective power supply voltage supplied to the electric load.
10. An air conditioner characterized by comprising the control device of the air conditioner according to claim 9.
11. A computer-readable storage medium, having stored thereon a control program of an air conditioner, which when executed by a processor, implements the control method of the air conditioner according to any one of claims 1 to 8.
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| CN202010060365.9A CN111256331A (en) | 2020-01-19 | 2020-01-19 | Air conditioner and control method and control device thereof |
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| CN202010060365.9A CN111256331A (en) | 2020-01-19 | 2020-01-19 | Air conditioner and control method and control device thereof |
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