Air conditioner status detection method, device, storage medium and air conditioner

Abstract

The present invention provides an air conditioner status detection method, device, storage medium, and air conditioner, wherein a sound source is provided inside the air conditioner; a sound receiver is provided outside the air conditioner; the method comprises: when the air conditioner is in the off state, controlling the sound source to emit sound waves of a set frequency toward the air outlet where the air conditioner air guide plate is located and / or the air inlet where the air conditioner air inlet baffle is located; controlling the sound receiver to receive echo signals formed by the sound waves reflected in multiple directions within the room; performing preset processing on the echo signals received by the sound receiver to extract second characteristic parameters of the echo signals; and comparing the extracted second characteristic parameters with preset first characteristic parameters to determine whether the air conditioner air guide plate and / or the air inlet baffle are in a closed state. The present invention can automatically monitor the closed state of the air conditioner air guide plate and the air inlet baffle.

Description

Technical Field

[0001] The present invention relates to the field of control, and in particular to an air conditioner state detection method, device, storage medium and air conditioner. Background Art

[0002] When the air conditioner is turned off, the air deflector and air inlet damper are closed. However, due to other reasons, such as manual operation, the air deflector may not be fully closed, resulting in a gap or a large opening, which affects the aesthetics of the entire unit. Because the air conditioner does not have a limit detection function, it cannot detect whether the air deflector or air inlet damper is fully closed. If the user wants to close the air deflector or air inlet damper, they need to turn the air conditioner on and off again before the air conditioner controls the air deflector motor to close it. Summary of the Invention

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned related technologies and provide an air conditioning status detection method, device, storage medium and air conditioning to solve the problem in the related technologies that the air guide plate or the air inlet baffle is not closed or is not closed tightly.

[0004] On one hand, the present invention provides an air-conditioning state detection method for detecting the closed state of the air-conditioning air guide plate and / or the closed state of the air-conditioning air inlet baffle, wherein a sound source is provided inside the air-conditioning; and a sound receiver is provided outside the air-conditioning; the method comprises: when the air-conditioning is in the off state, controlling the sound source to emit sound waves of a set frequency toward the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located; controlling the sound receiver to receive echo signals formed by reflections of the sound waves in multiple directions in the room; performing preset processing on the echo signals received by the sound receiver to extract the echo signals the extracted second characteristic parameter is compared with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state; wherein, the preset first characteristic parameter is the characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits a sound wave of a set frequency at the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located, and the air-conditioning air guide plate and the air-conditioning air inlet baffle have different first characteristic parameters.

[0005] Optionally, the first characteristic parameter includes: at least one of setting the sound wave signal frequency, setting the sound wave signal intensity, setting the sound wave signal delay and setting the sound wave signal phase; and / or, the second characteristic parameter includes: at least one of the sound wave signal frequency, sound wave signal intensity, sound wave signal delay and sound wave signal phase.

[0006] Optionally, the extracted second characteristic parameter is compared with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state, including: judging whether the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than a preset frequency deviation threshold; if it is judged that the frequency deviation value is less than the preset frequency deviation threshold, then judging whether the comparison between the second characteristic parameter and the preset first characteristic parameter meets the set judgment condition; if it is judged that the comparison between the second characteristic parameter and the preset first characteristic parameter meets the set judgment condition, then judging that the air-conditioning air guide plate is in a non-closed state, if it is judged that the first characteristic parameter meets the set judgment condition, then judging that the air-conditioning air guide plate is in a non-closed state, If the comparison between the second characteristic parameter and the preset first characteristic parameter does not meet the set judgment condition, it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state; wherein, the set judgment condition includes at least one of the following: the intensity deviation value of the sound wave signal intensity in the second characteristic parameter and the set sound wave signal intensity in the preset first characteristic parameter exceeds the preset intensity deviation threshold; the delay deviation value of the sound wave signal delay in the second characteristic parameter and the set sound wave signal delay in the preset first characteristic parameter exceeds the preset delay deviation threshold; the phase difference between the sound wave signal phase in the second characteristic parameter and the set sound wave signal phase in the preset first characteristic parameter exceeds the preset phase difference threshold.

[0007] Optionally, it also includes: if it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state, further judging the angle of the air-conditioning air guide plate, including: determining the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle based on at least one of the intensity excess value of the intensity deviation value exceeding the preset intensity deviation threshold, the delay excess value of the delay deviation value exceeding the delay deviation threshold, and the phase difference excess value of the phase difference exceeding the preset phase difference threshold; and / or, if it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state, issuing a reminder message to remind the user.

[0008] Another aspect of the present invention provides an air-conditioning state detection device for detecting the closed state of the air-conditioning air guide plate and / or the closed state of the air-conditioning air inlet baffle, wherein a sound source is provided inside the air-conditioning; and a sound receiver is provided outside the air-conditioning; the device comprises: a first control unit for controlling the sound source to emit sound waves of a set frequency toward the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located when the air-conditioning is in the off state; a second control unit for controlling the sound receiver to receive echo signals formed by reflections of the sound waves in multiple directions in the room; and a processing unit for performing preset processing on the echo signals received by the sound receiver to provide a sound signal. Get the second characteristic parameter of the echo signal; a determination unit is used to compare the second characteristic parameter extracted by the processing unit with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state; wherein, the preset first characteristic parameter is the characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits a sound wave of a set frequency toward the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located, and the air-conditioning air guide plate and the air-conditioning air inlet baffle have different first characteristic parameters.

[0009] Optionally, the first characteristic parameter includes: at least one of setting the sound wave signal frequency, setting the sound wave signal intensity, setting the sound wave signal delay and setting the sound wave signal phase; and / or, the second characteristic parameter includes: at least one of the sound wave signal frequency, sound wave signal intensity, sound wave signal delay and sound wave signal phase.

[0010] Optionally, the determination unit compares the extracted second characteristic parameter with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state, including: judging whether the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than a preset frequency deviation threshold; if it is judged that the frequency deviation value is less than the preset frequency deviation threshold, then judging whether the comparison between the second characteristic parameter and the preset first characteristic parameter meets the set judgment condition; if it is judged that the comparison between the second characteristic parameter and the preset first characteristic parameter meets the set judgment condition, then determining that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state. state, if it is determined that the comparison between the second characteristic parameter and the preset first characteristic parameter does not meet the set judgment condition, it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state; wherein, the set judgment condition includes at least one of the following: the intensity deviation value of the sound wave signal intensity in the second characteristic parameter and the set sound wave signal intensity in the preset first characteristic parameter exceeds the preset intensity deviation threshold; the delay deviation value of the sound wave signal delay in the second characteristic parameter and the set sound wave signal delay in the preset first characteristic parameter exceeds the preset delay deviation threshold; the phase difference between the sound wave signal phase in the second characteristic parameter and the set sound wave signal phase in the preset first characteristic parameter exceeds the preset phase difference threshold.

[0011] Optionally, it also includes: a judgment unit, which is used to further judge the angle of the air-conditioning air-guide plate if the determination unit determines that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state, including: determining the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle based on at least one of the intensity excess value of the intensity deviation value exceeding the preset intensity deviation threshold, the delay excess value of the delay deviation value exceeding the delay deviation threshold, and the phase difference excess value of the phase difference exceeding the preset phase difference threshold; and / or, a reminder unit, which is used to issue a reminder message to remind the user if the determination unit determines that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state.

[0012] Another aspect of the present invention provides a storage medium having a computer program stored thereon, wherein the program implements the steps of any of the aforementioned methods when executed by a processor.

[0013] In another aspect, the present invention provides an air conditioner, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the program.

[0014] In another aspect, the present invention provides an air conditioner, comprising any of the aforementioned air conditioner status detection devices.

[0015] According to the technical solution of the present invention, a sound source inside the air conditioner is driven to emit a specific sound wave, and then a sound receiver outside the air conditioner receives the echo of this specific sound wave. Through identification and analysis, it is determined whether the air guide plate and / or the air inlet baffle are in a closed state. The present invention utilizes the physical principle of sound wave echo to realize automatic monitoring of the state of the air guide plate and / or the air inlet baffle of the air conditioner. It can automatically monitor the state of the air guide plate and / or the air inlet baffle, avoiding the problems of misjudgment and missed judgment that may exist in traditional methods, and improving the accuracy and reliability of judgment; realizing the automated control of the air conditioning system, reducing manual intervention, improving work efficiency, and reducing maintenance costs; enhancing the intelligence level of the air conditioning system to meet the needs of modern life; improving indoor air quality, and avoiding the negative impact caused by problems such as the air guide plate and / or the air inlet baffle not being closed or not being closed tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 1 is a schematic diagram of an embodiment of an air conditioner status detection method provided by the present invention;

[0018] Figure 2a A side view of the air conditioner when it is turned on is shown;

[0019] Figure 2b A side view of the air conditioner when it is turned off is shown;

[0020] Figure 3 1 is a schematic diagram of a method for detecting an air conditioner status according to a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic structural diagram of an embodiment of an air conditioning status detection device provided by the present invention. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] The present invention provides an air conditioner status detection method for detecting the closed state of an air conditioner air guide plate and / or the closed state of an air conditioner air inlet baffle.

[0025] Figure 2a A side view of the air conditioner when it is turned on is shown. Figure 2b The side view shows the air conditioner in the off state. Figure 2a 、 Figure 2b As shown, a sound source 2 is provided inside the air conditioner 1, and a sound receiver 3 is provided outside the air conditioner 1. The sound source may be, for example, a speaker or an ultrasonic generator. For example, it may be the speaker of the air conditioner's built-in voice module. The sound source may be located at any location that is directly connected to the air inlet and outlet, such as a diagonal position in a triangular relationship.

[0026] The sound receiver may be, for example, a microphone, or a microphone array consisting of a plurality of microphones (see Figure 2a 、 Figure 2b The sound receiver can be mounted on an external panel housing of the air conditioner, for example, on a panel housing on either side of the air outlet 6 where the air guide plate 4 is located and / or on a housing on either side of the air inlet 7 where the air inlet baffle plate 5 is located. When the air conditioner is on, the air guide plate 4 is open and the air inlet baffle plate 5 is open. When the air conditioner is off, the air guide plate 4 is closed and the air inlet baffle plate 5 is closed.

[0027] Figure 1 1 is a schematic diagram of an embodiment of an air-conditioning status detection method provided by the present invention.

[0028] like Figure 1 As shown, according to one embodiment of the present invention, the air-conditioning status detection method includes at least step S110, step S120, step S130 and step S140.

[0029] Step S110, when the air conditioner is in the off state, control the sound source to emit sound waves of a set frequency toward the air outlet where the air inlet of the air conditioner air guide plate and / or the air inlet baffle of the air conditioner is located.

[0030] Specifically, the air conditioner is in the off state and does not produce any operating noise. The sound source is directed to the air outlet where the air guide plate is located and / or the air inlet where the air conditioner inlet baffle is located to emit sound waves of a set frequency. The range of the set frequency can be, for example, 20kHz to 100kHz to avoid interference with the human ear. The transmission power can be, for example, 1-5W to ensure sufficient signal propagation distance. The sound wave of the set frequency can be a sound wave with a set single frequency, that is, the sound wave has the same frequency from beginning to end, or the sound wave of the set frequency can be a sound wave with two or more set different frequencies, that is, the sound wave frequency changes between the two or more different frequencies according to a preset rule, that is, a sound wave with a frequency that changes according to a preset rule. The preset frequency can be a preset order of emitting the two or more sound waves of different frequencies and the time length and / or time interval for emitting the two or more sound waves of different frequencies.

[0031] Step S120: Control the sound receiver to receive echo signals formed by the sound waves being reflected in multiple directions in the room.

[0032] Specifically, the sound receiver captures the echo signals formed by the sound waves reflected in multiple directions in the room.

[0033] Step S130 : performing preset processing on the echo signal received by the sound receiver to extract a second characteristic parameter of the echo signal.

[0034] The preset processing may include, for example, at least one of digital filtering, adaptive filtering, and Fourier transform, thereby extracting a second characteristic parameter of the echo signal. The second characteristic parameter may specifically include at least one of acoustic signal frequency, acoustic signal intensity, acoustic signal delay, and acoustic signal phase.

[0035] The sound receiver captures echo signals generated by sound waves reflecting in multiple directions indoors and transmits the received echo signals to a processor, which performs predetermined processing on the received echo signals to extract a second characteristic parameter of the echo signals. The processor, which can be a single-chip microcomputer, digital signal processor, or computer, filters, amplifies, and analyzes the captured echo signals to extract characteristic parameters such as echo intensity and frequency, and determines the status of the air deflector based on these characteristic parameters. The sound receiver is equipped with a low-pass filter to reduce interference from ambient noise on the echo signals.

[0036] Step S140: Compare the extracted second characteristic parameter with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state.

[0037] Specifically, the preset first characteristic parameter is a characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits a sound wave of a set frequency toward the air outlet where the air-conditioning air guide plate is located and / or the air-conditioning air inlet baffle. The first characteristic parameter may, for example, include: at least one of a set sound wave signal frequency, a set sound wave signal intensity, a set sound wave signal delay, and a set sound wave signal phase. The air-conditioning air guide plate and the air-conditioning air inlet baffle have different first characteristic parameters. In other words, the preset characteristic parameters for detecting whether the air-conditioning air guide plate is in a closed state and detecting whether the air-conditioning air inlet baffle is in a closed state are different.

[0038] High-frequency sound waves have specific sound wave frequencies and intensities; since the air guide plate and the air inlet baffle structure are not completely sealed structures, when the air guide plate or the air inlet baffle is closed, the sound receiver can still receive a fixed echo sound wave frequency, intensity, time delay and phase relationship. Therefore, it is possible to obtain in advance through experimental testing the characteristic parameters of the echo signal received by the sound receiver when the air-conditioning air guide plate is in a closed state and the sound source emits sound waves of a set frequency at the air outlet where the air-conditioning air guide plate is located, and / or the characteristic parameters of the echo signal received by the sound receiver when the air-conditioning air inlet baffle is in a closed state and the sound source emits sound waves of a set frequency at the air inlet where the air-conditioning air inlet baffle is located. For example, before the air conditioner leaves the factory, the data characteristics obtained from the above experimental tests are used as preset characteristic parameters, and different air-conditioning structures have different first characteristic parameters.

[0039] Specifically, determine whether the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than the preset frequency deviation threshold; if it is determined that the frequency deviation value is less than the preset frequency deviation threshold, then determine whether the second characteristic parameter is compared with the preset first characteristic parameter to meet the set judgment condition; if it is determined that the second characteristic parameter is compared with the preset first characteristic parameter to meet the set judgment condition, then determine that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state.

[0040] If the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than the preset frequency deviation threshold, it means that the sound wave signal frequency of the received echo signal is almost the same as the set sound wave signal frequency in the first characteristic parameter, indicating that the sound wave generating the echo signal is emitted by the sound source inside the air conditioner. It can be further determined whether the second characteristic parameter meets the set judgment condition by comparison with the preset first characteristic parameter.

[0041] In a specific embodiment, the setting judgment condition includes at least one of the following:

[0042] An intensity deviation value between the acoustic wave signal intensity in the second characteristic parameter and the set acoustic wave signal intensity in the preset first characteristic parameter exceeds a preset intensity deviation threshold;

[0043] A delay deviation value between the acoustic signal delay in the second characteristic parameter and the set acoustic signal delay in the preset first characteristic parameter exceeds a preset delay deviation threshold;

[0044] A phase difference between the acoustic wave signal phase in the second characteristic parameter and the set acoustic wave signal phase in the preset first characteristic parameter exceeds a preset phase difference threshold.

[0045] When the sound wave of the set frequency is a sound wave with a set single frequency, the comparison is performed directly; or when the sound wave of the set frequency is a sound wave with two or more set frequencies (that is, the sound wave frequency changes between the two or more different frequencies according to a preset rule, that is, the sound wave frequency changes according to a preset rule), the comparison is performed according to the preset rule.

[0046] If the aforementioned conditions are met, the air guide and / or air inlet baffle are determined to be in an open state; if the aforementioned conditions are not met, the air guide and / or air inlet baffle are determined to be in a closed state. In other words, if the frequency of the actually received echo sound wave is similar to the sound wave signal frequency in the preset first characteristic parameter, but the intensity, delay, and phase are within a relatively small threshold range, the air guide and / or air inlet baffle are determined to be in a closed state; if the intensity, delay, and phase are within a relatively small threshold range, the air guide and / or air inlet baffle are determined to be in an open state.

[0047] Furthermore, if it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a non-closed state, the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle can be further judged. Specifically, the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle can be determined based on at least one of the intensity excess value of the intensity deviation value exceeding the preset intensity deviation threshold, the delay excess value of the delay deviation value exceeding the delay deviation threshold, and the phase difference excess value of the phase difference exceeding the preset phase difference threshold. That is, the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is determined based on at least one of the intensity deviation value of the sound wave signal intensity in the second characteristic parameter and the set sound wave signal intensity in the preset first characteristic parameter exceeding the intensity excess value of the preset intensity deviation threshold, the delay deviation value of the sound wave signal delay in the second characteristic parameter and the set sound wave signal delay in the preset first characteristic parameter exceeding the delay excess value of the preset delay deviation threshold, and the phase difference between the sound wave signal phase in the second characteristic parameter and the set sound wave signal phase in the preset first characteristic parameter exceeding the preset phase difference threshold.

[0048] If it is found that the actual echo sound wave has the same frequency as the preset sound wave, but the intensity, time delay and phase difference exceed the corresponding threshold value, the non-closed angle of the air guide plate and / or the air inlet baffle is determined based on the amount of the excess. The lower the echo intensity and the greater the time delay and phase difference, the larger the air guide plate opening. In a specific embodiment, different correspondences between intensity excess values, time delay excess values ​​and / or phase difference excess values ​​and the angle of the air-conditioning air guide plate can be preset, and the current angle of the air-conditioning air guide plate is determined based on the preset corresponding relationship, and / or different correspondences between intensity excess values, time delay excess values ​​and / or phase difference excess values ​​and the angle of the air-conditioning air inlet baffle can be preset, and the current angle of the air-conditioning air inlet baffle is determined based on the preset corresponding relationship. The corresponding relationship can be calibrated by experimental data before leaving the factory.

[0049] Furthermore, the method further includes: if it is determined that the air guide plate and / or the air inlet baffle of the air conditioner are not closed, issuing a reminder message to alert the user. For example, if it is determined that the air guide plate and / or the air inlet baffle are not closed, the air conditioner emits a buzzer to alert the user.

[0050] In order to clearly illustrate the technical solution of the present invention, the execution process of the air-conditioning status detection method provided by the present invention is described below with reference to a specific embodiment.

[0051] Figure 3 FIG. 1 is a schematic diagram of a specific embodiment of the air-conditioning status detection method provided by the present invention. Figure 3As shown, using the example of detecting the closed state of an air conditioner's air deflector, when the air conditioner is off, no operating noise is generated. A sound source inside the air conditioner emits sound waves directed at the air outlet where the air deflector is located. An external receiver captures the echo signals formed by the sound waves reflecting in multiple directions indoors and transmits them to a processor. The air conditioner processor processes the echo signals, extracting characteristic parameters such as echo frequency, intensity, time delay, and phase. Because the degree of sound waves passing through the air deflector varies when it is closed and when it is not, the echo sound waves collected by the receiver have inconsistent data characteristics. This is used to determine whether the air deflector is closed. If the air deflector is not closed, the air conditioner emits a beep to alert the user.

[0052] The present invention also provides an air conditioner status detection device. The method is used to detect the closed state of the air conditioner air guide plate and / or the closed state of the air conditioner air inlet baffle.

[0053] Figure 2a A side view of the air conditioner when it is turned on is shown. Figure 2b The side view shows the air conditioner in the off state. Figure 2a 、 Figure 2b As shown, a sound source 2 is provided inside the air conditioner 1, and a sound receiver 3 is provided outside the air conditioner 1. The sound source may be, for example, a speaker or an ultrasonic generator. For example, it may be the speaker of the air conditioner's built-in voice module. The sound source may be located at any location that is directly connected to the air inlet and outlet, such as a diagonal position in a triangular relationship.

[0054] The sound receiver may be, for example, a microphone, or a microphone array consisting of a plurality of microphones (see Figure 2a 、 Figure 2b The sound receiver can be mounted on an external panel housing of the air conditioner, for example, on the panel housing on either side of the air outlet where the air guide plate is located and / or on the housing on either side of the air inlet 7 where the air inlet baffle 5 is located. When the air conditioner is on, the air guide plate 4 is open and the air inlet baffle 5 is open. When the air conditioner is off, the air guide plate 4 is closed and the air inlet baffle 5 is closed.

[0055] Figure 4 This is a schematic structural diagram of an embodiment of the air conditioning state detection device provided by the present invention. Figure 4 As shown, the air-conditioning state detection device 100 includes: a first control unit 110 , a second control unit 120 , a processing unit 130 , and a determination unit 140 .

[0056] The first control unit 110 is used to control the sound source to emit sound waves of a set frequency toward the air outlet where the air conditioner air guide plate is located and / or the air inlet where the air conditioner air inlet baffle is located when the air conditioner is in the off state.

[0057] Specifically, the air conditioner is in the off state and does not produce any operating noise. The sound source is directed to the air outlet where the air guide plate is located and / or the air inlet where the air conditioner inlet baffle is located to emit sound waves of a set frequency. The range of the set frequency can be, for example, 20kHz to 100kHz to avoid interference with the human ear. The transmission power can be, for example, 1-5W to ensure sufficient signal propagation distance. The sound wave of the set frequency can be a sound wave with a set single frequency, that is, the sound wave has the same frequency from beginning to end, or the sound wave of the set frequency can be a sound wave with two or more set different frequencies, that is, the sound wave frequency changes between the two or more different frequencies according to a preset rule, that is, a sound wave with a frequency that changes according to a preset rule. The preset frequency can be a preset order of emitting the two or more sound waves of different frequencies and the time length and / or time interval for emitting the two or more sound waves of different frequencies.

[0058] The second control unit 120 is configured to control the sound receiver to receive echo signals generated by the sound waves being reflected in multiple directions in the room.

[0059] Specifically, the sound receiver captures the echo signals formed by the sound waves reflected in multiple directions in the room.

[0060] The processing unit 130 is configured to perform preset processing on the echo signal received by the sound receiver to extract a second characteristic parameter of the echo signal.

[0061] The preset processing may include, for example, at least one of digital filtering, adaptive filtering, and Fourier transform, thereby extracting a second characteristic parameter of the echo signal. The second characteristic parameter may specifically include at least one of acoustic signal frequency, acoustic signal intensity, acoustic signal delay, and acoustic signal phase.

[0062] The processing unit 130 can specifically perform preset processing on the received echo signal via a processor to extract a second characteristic parameter of the echo signal. The sound receiver captures echo signals formed by sound waves reflecting in multiple directions indoors and can transmit the received echo signals to the processor, which performs preset processing on the received echo signals to extract the second characteristic parameter of the echo signal. The processor, which can be a device such as a single-chip microcomputer, a digital signal processor, or a computer, filters, amplifies, and analyzes the captured echo signal to extract characteristic parameters such as echo intensity and frequency, and determines the status of the air deflector based on the characteristic parameters. The sound receiver is provided with a low-pass filter to reduce interference from ambient noise on the echo signal.

[0063] The determination unit 140 is used to compare the second characteristic parameter extracted by the processing unit with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state.

[0064] Specifically, the preset first characteristic parameter is a preset characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits a sound wave of a set frequency toward the air outlet where the air-conditioning air guide plate is located and / or the air-conditioning air inlet baffle. The first characteristic parameter may, for example, include: at least one of a set sound wave signal frequency, a set sound wave signal intensity, a set sound wave signal delay, and a set sound wave signal phase. Different first characteristic parameters are used for the air-conditioning air guide plate and the air-conditioning air inlet baffle. That is, the preset characteristic parameters for detecting whether the air-conditioning air guide plate is in a closed state and detecting whether the air-conditioning air inlet baffle is in a closed state are different.

[0065] High-frequency sound waves have specific sound wave frequencies and intensities; since the air guide plate and the air inlet baffle structure are not completely sealed structures, when the air guide plate or the air inlet baffle is closed, the sound receiver can still receive a fixed echo sound wave frequency, intensity, time delay and phase relationship. Therefore, it is possible to obtain in advance through experimental testing the characteristic parameters of the echo signal received by the sound receiver when the air-conditioning air guide plate is in a closed state and the sound source emits sound waves of a set frequency at the air outlet where the air-conditioning air guide plate is located, and / or the characteristic parameters of the echo signal received by the sound receiver when the air-conditioning air inlet baffle is in a closed state and the sound source emits sound waves of a set frequency at the air inlet where the air-conditioning air inlet baffle is located. For example, before the air conditioner leaves the factory, the data characteristics obtained from the above experimental tests are used as preset characteristic parameters, and different air-conditioning structures have different first characteristic parameters.

[0066] Specifically, determine whether the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than the preset frequency deviation threshold; if it is determined that the frequency deviation value is less than the preset frequency deviation threshold, then determine whether the second characteristic parameter is compared with the preset first characteristic parameter to meet the set judgment condition; if it is determined that the second characteristic parameter is compared with the preset first characteristic parameter to meet the set judgment condition, then determine that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state.

[0067] If the frequency deviation value between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than the preset frequency deviation threshold, it means that the sound wave signal frequency of the received echo signal is almost the same as the set sound wave signal frequency in the first characteristic parameter, indicating that the sound wave generating the echo signal is emitted by the sound source inside the air conditioner. It can be further determined whether the second characteristic parameter meets the set judgment condition by comparison with the preset first characteristic parameter.

[0068] In a specific embodiment, the setting judgment condition includes at least one of the following:

[0069] An intensity deviation value between the acoustic wave signal intensity in the second characteristic parameter and the set acoustic wave signal intensity in the preset first characteristic parameter exceeds a preset intensity deviation threshold;

[0070] A delay deviation value between the acoustic signal delay in the second characteristic parameter and the set acoustic signal delay in the preset first characteristic parameter exceeds a preset delay deviation threshold;

[0071] A phase difference between the acoustic wave signal phase in the second characteristic parameter and the set acoustic wave signal phase in the preset first characteristic parameter exceeds a preset phase difference threshold.

[0072] When the sound wave of the set frequency is a sound wave with a set single frequency, the comparison is performed directly; or when the sound wave of the set frequency is a sound wave with two or more set frequencies (that is, the sound wave frequency changes between the two or more different frequencies according to a preset rule, that is, the sound wave frequency changes according to a preset rule), the comparison is performed according to the preset rule.

[0073] If the aforementioned conditions are met, the air guide and / or air inlet baffle are determined to be in an open state; if the aforementioned conditions are not met, the air guide and / or air inlet baffle are determined to be in a closed state. In other words, if the frequency of the actually received echo sound wave is similar to the sound wave signal frequency in the preset first characteristic parameter, but the intensity, delay, and phase are within a relatively small threshold range, the air guide and / or air inlet baffle are determined to be in a closed state; if the intensity, delay, and phase are within a relatively small threshold range, the air guide and / or air inlet baffle are determined to be in an open state.

[0074] Furthermore, the device 100 further includes a judgment unit (not shown).

[0075] a determining unit configured to, if the determining unit determines that the air conditioner air guide plate and / or the air conditioner air inlet baffle is in the non-closed state, further determine the angle of the air conditioner air guide plate and / or the air conditioner air inlet baffle. Specifically, determining the angle of the air conditioner air guide plate and / or the air conditioner air inlet baffle based on at least one of an intensity excess value by which the intensity deviation value exceeds the preset intensity deviation threshold, a delay excess value by which the delay deviation value exceeds the delay deviation threshold, and a phase difference excess value by which the phase difference exceeds the preset phase difference threshold.

[0076] Specifically, the angle of the air-conditioning guide plate and / or the air-conditioning air-inlet baffle can be determined based on at least one of the intensity excess value of the intensity deviation value exceeding the preset intensity deviation threshold, the delay excess value of the delay deviation value exceeding the delay deviation threshold, and the phase difference excess value of the phase difference exceeding the preset phase difference threshold. That is, the angle of the air-conditioning guide plate and / or the air-conditioning air-inlet baffle can be determined based on at least one of the intensity deviation value of the sound wave signal intensity in the second characteristic parameter and the set sound wave signal intensity in the preset first characteristic parameter exceeding the intensity excess value of the preset intensity deviation threshold, the delay deviation value of the sound wave signal delay in the second characteristic parameter and the set sound wave signal delay in the preset first characteristic parameter exceeding the delay excess value of the preset delay deviation threshold, and the phase difference between the sound wave signal phase in the second characteristic parameter and the set sound wave signal phase in the preset first characteristic parameter exceeding the preset phase difference threshold.

[0077] If it is found that the actual echo sound wave has the same frequency as the preset sound wave, but the intensity, time delay and phase difference exceed the corresponding threshold value, the non-closed angle of the air guide plate and / or the air inlet baffle is determined based on the amount of the excess. The lower the echo intensity and the greater the time delay and phase difference, the larger the air guide plate opening. In a specific embodiment, different correspondences between intensity excess values, time delay excess values ​​and / or phase difference excess values ​​and the angle of the air-conditioning air guide plate can be preset, and the current angle of the air-conditioning air guide plate is determined based on the preset corresponding relationship, and / or different correspondences between intensity excess values, time delay excess values ​​and / or phase difference excess values ​​and the angle of the air-conditioning air inlet baffle can be preset, and the current angle of the air-conditioning air inlet baffle is determined based on the preset corresponding relationship. The corresponding relationship can be calibrated by experimental data before leaving the factory.

[0078] Furthermore, the device 100 further includes a reminder unit (not shown).

[0079] and a reminder unit configured to issue a reminder message to alert a user if the determination unit determines that the air deflector and / or the air inlet baffle of the air conditioner are not closed. For example, if the air deflector and / or the air inlet baffle are not closed, the air conditioner emits a beep to alert the user.

[0080] The present invention also provides a storage medium corresponding to the air-conditioning status detection method, on which a computer program is stored, and when the program is executed by a processor, the steps of any of the aforementioned methods are implemented.

[0081] The present invention also provides an air conditioner corresponding to the air conditioner status detection method, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the program.

[0082] The present invention also provides an air conditioner corresponding to the air conditioner status detection device, comprising any of the aforementioned air conditioner status detection devices.

[0083] Accordingly, the solution provided by the present invention drives the sound source inside the air conditioner to emit specific sound waves, and then the sound receiver outside the air conditioner receives the echo of this specific sound wave, and through identification and analysis, determines whether the air guide plate and / or the air inlet baffle are in a closed state. The present invention uses the physical principle of sound wave echo to realize automatic monitoring of the status of the air guide plate and / or the air inlet baffle of the air conditioner. It can automatically monitor the status of the air guide plate and / or the air inlet baffle, avoiding the problems of misjudgment and missed judgment that may exist in traditional methods, and improves the accuracy and reliability of judgment; realizes the automatic control of the air conditioning system, reduces manual intervention, improves work efficiency, and reduces maintenance costs; enhances the intelligence level of the air conditioning system to meet the needs of modern life; improves indoor air quality, and avoids the negative effects caused by problems such as the air guide plate and / or the air inlet baffle not being closed or not being closed tightly.

[0084] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Furthermore, each functional unit may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0086] The units described as separate components may or may not be physically separate, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0087] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the relevant technology, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0088] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims.

Claims

1. A method for detecting the state of an air conditioner, for detecting the closed state of the air guide plate of the air conditioner and / or the closed state of the air inlet baffle of the air conditioner, characterized in that: A sound source is provided inside the air conditioner; a sound receiver is provided outside the air conditioner; and the method comprises: When the air conditioner is in the off state, the sound source is controlled to emit sound waves of a set frequency toward the air outlet where the air guide plate of the air conditioner is located and / or the air inlet where the air inlet baffle of the air conditioner is located; Controlling the sound receiver to receive echo signals formed by the sound wave reflected in multiple directions in the room; performing a preset process on the echo signal received by the sound receiver to extract a second characteristic parameter of the echo signal; Comparing the extracted second characteristic parameter with the preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state; Among them, the preset first characteristic parameter is the characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits sound waves of a set frequency at the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located. The first characteristic parameter is different for the air-conditioning air guide plate and the air-conditioning air inlet baffle.

2. The method according to claim 1, characterized in that The first characteristic parameter includes: at least one of a set sound wave signal frequency, a set sound wave signal intensity, a set sound wave signal delay, and a set sound wave signal phase; and / or, The second characteristic parameter includes at least one of the acoustic signal frequency, acoustic signal intensity, acoustic signal delay, and acoustic signal phase.

3. The method according to claim 2, characterized in that Comparing the extracted second characteristic parameter with the preset first characteristic parameter to determine whether the air conditioner air guide plate and / or the air conditioner air inlet baffle is in a closed state includes: Determine whether a frequency deviation between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than a preset frequency deviation threshold; If it is determined that the frequency deviation value is less than the preset frequency deviation threshold, then comparing the second characteristic parameter with the preset first characteristic parameter to determine whether a set judgment condition is met; If it is determined that the comparison between the second characteristic parameter and the preset first characteristic parameter satisfies the set judgment condition, it is determined that the air conditioner air guide plate and / or the air conditioner air inlet baffle is in the open state; if it is determined that the comparison between the second characteristic parameter and the preset first characteristic parameter does not satisfy the set judgment condition, it is determined that the air conditioner air guide plate and / or the air conditioner air inlet baffle is in the closed state; The setting judgment condition includes at least one of the following: An intensity deviation value between the acoustic wave signal intensity in the second characteristic parameter and the set acoustic wave signal intensity in the preset first characteristic parameter exceeds a preset intensity deviation threshold; A delay deviation value between the acoustic signal delay in the second characteristic parameter and the set acoustic signal delay in the preset first characteristic parameter exceeds a preset delay deviation threshold; A phase difference between the acoustic wave signal phase in the second characteristic parameter and the set acoustic wave signal phase in the preset first characteristic parameter exceeds a preset phase difference threshold.

4. The method according to claim 3, characterized in that Also includes: If it is determined that the air conditioner air guide plate is in the non-closed state, further determining the angle of the air conditioner air guide plate and / or the air conditioner air inlet baffle includes: determining the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle according to at least one of an intensity excess value by which the intensity deviation value exceeds the preset intensity deviation threshold, a delay excess value by which the delay deviation value exceeds the delay deviation threshold, and a phase difference excess value by which the phase difference exceeds the preset phase difference threshold; and / or, If it is determined that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state, a reminder message is issued to remind the user.

5. An air conditioner status detection device for detecting the closed state of the air conditioner air guide plate and / or the closed state of the air conditioner air inlet baffle, characterized in that: A sound source is provided inside the air conditioner; a sound receiver is provided outside the air conditioner; the device comprises: a first control unit, configured to control the sound source to emit sound waves of a set frequency toward the air outlet where the air guide plate of the air conditioner is located and / or the air inlet where the air inlet baffle of the air conditioner is located when the air conditioner is in an off state; a second control unit, configured to control the sound receiver to receive echo signals formed by the sound waves being reflected in multiple directions in the room; a processing unit, configured to perform a preset process on the echo signal received by the sound receiver to extract a second characteristic parameter of the echo signal; a determination unit, configured to compare the second characteristic parameter extracted by the processing unit with a preset first characteristic parameter to determine whether the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a closed state; Among them, the preset first characteristic parameter is the characteristic parameter of the echo signal received by the sound receiver when the air-conditioning air guide plate and / or the air-conditioning air inlet baffle are in a closed state and the sound source emits sound waves of a set frequency at the air outlet where the air-conditioning air guide plate is located and / or the air inlet where the air-conditioning air inlet baffle is located. The first characteristic parameter is different for the air-conditioning air guide plate and the air-conditioning air inlet baffle.

6. The device according to claim 5, characterized in that The first characteristic parameter includes: at least one of a set sound wave signal frequency, a set sound wave signal intensity, a set sound wave signal delay, and a set sound wave signal phase; and / or, The second characteristic parameter includes at least one of the acoustic signal frequency, acoustic signal intensity, acoustic signal delay, and acoustic signal phase.

7. The device according to claim 6, characterized in that The determining unit compares the extracted second characteristic parameter with a preset first characteristic parameter to determine whether the air conditioner air guide plate and / or the air conditioner air inlet baffle is in a closed state, including: Determine whether a frequency deviation between the sound wave signal frequency in the second characteristic parameter and the set sound wave signal frequency in the preset first characteristic parameter is less than a preset frequency deviation threshold; If it is determined that the frequency deviation value is less than the preset frequency deviation threshold, then comparing the second characteristic parameter with the preset first characteristic parameter to determine whether a set judgment condition is met; If it is determined that the comparison between the second characteristic parameter and the preset first characteristic parameter satisfies the set judgment condition, it is determined that the air conditioner air guide plate and / or the air conditioner air inlet baffle is in the open state; if it is determined that the comparison between the second characteristic parameter and the preset first characteristic parameter does not satisfy the set judgment condition, it is determined that the air conditioner air guide plate and / or the air conditioner air inlet baffle is in the closed state; The setting judgment condition includes at least one of the following: An intensity deviation value between the acoustic wave signal intensity in the second characteristic parameter and the set acoustic wave signal intensity in the preset first characteristic parameter exceeds a preset intensity deviation threshold; A delay deviation value between the acoustic signal delay in the second characteristic parameter and the set acoustic signal delay in the preset first characteristic parameter exceeds a preset delay deviation threshold; A phase difference between the acoustic wave signal phase in the second characteristic parameter and the set acoustic wave signal phase in the preset first characteristic parameter exceeds a preset phase difference threshold.

8. The device according to claim 7, characterized in that Also includes: a judging unit, configured to further judge an angle of the air-conditioning air-guide plate if the determining unit determines that the air-conditioning air-inlet baffle is in an unclosed state, comprising: determining the angle of the air-conditioning air guide plate and / or the air-conditioning air inlet baffle according to at least one of an intensity excess value by which the intensity deviation value exceeds the preset intensity deviation threshold, a delay excess value by which the delay deviation value exceeds the delay deviation threshold, and a phase difference excess value by which the phase difference exceeds the preset phase difference threshold; and / or, A reminder unit is used to send a reminder message to remind the user if the determination unit determines that the air-conditioning air guide plate and / or the air-conditioning air inlet baffle is in a non-closed state.

9. A storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

10. An air conditioner, characterized in that: The air conditioner includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the method described in any one of claims 1 to 4 are implemented, or the air conditioner includes the air conditioner status detection device described in any one of claims 5 to 8.

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