Air conditioner having sensor and control method thereof

Abstract

An air conditioner is provided. The air conditioner comprises: a sensor for generating a sensor sensed value related to an object in a target space; an air conditioning module for performing an air conditioning operation; a memory for storing at least one instruction; and a processor. The processor: sets a first mode for activating the sensor or a second mode for deactivating the sensor on the basis of a user input; stops an air conditioning operation of the air conditioning module when it is determined that no person exists in the target space for a first reference time on the basis of a sensor sensed value of the sensor while the air conditioning operation is performed in a state in which the sensor is activated in the first mode; activates the sensor when a second reference time longer than the first reference time has elapsed from the start time of the air conditioning operation while the air conditioning operation is performed in a state in which the sensor is deactivated in the second mode; and stops the air conditioning operation when it is determined that no person exists in an air conditioning area on the basis of the sensor sensed value.

Description

Air conditioner equipped with a detection sensor and its control method

[0001] An embodiment of the present disclosure provides an air conditioner having a detection sensor, a method for controlling the air conditioner, and a computer-readable recording medium having recorded thereon a program for performing the air conditioner control method.

[0002] An air conditioner is equipped with a fan to discharge cooled or heated air. The indoor unit of the air conditioner discharges cooled or heated air into the air-conditioned space using the fan. The air conditioner may be equipped with various sensors, such as a occupant sensor and a temperature sensor. The air conditioner can control the environment of the air-conditioned space and the operation of the air conditioner by using various sensors. However, there is a problem in that the control operation of the air conditioner cannot be performed properly if the sensors of the air conditioner are disabled by user selection, resulting in abnormal operation.

[0003] According to one aspect of one embodiment of the present disclosure, an air conditioner is provided. The air conditioner (100) includes a detection sensor (110) that generates a sensor detection value related to an object within a target space. The air conditioner (100) also includes an air conditioning module (212) that performs an air conditioning operation. The air conditioner (100) also includes a memory (214) that stores at least one instruction. The air conditioner (100) also includes at least one processor (210). The at least one processor (210) sets a first mode for activating the detection sensor (110) or a second mode for deactivating the detection sensor (110) based on a user input by executing the at least one instruction, and when it is determined that no person exists in the target space for a first reference time based on a sensor detection value of the detection sensor (110) while performing the air conditioning operation in the first mode with the detection sensor (110) activated, the air conditioning operation of the air conditioning module (212) is stopped, and when a second reference time has elapsed from the start time of the air conditioning operation while performing the air conditioning operation in the second mode with the detection sensor (110) deactivated, the detection sensor (110) is activated, and when it is determined that no person exists in the air-conditioned area based on the sensor detection value, the air conditioning operation is stopped. The second reference time is a longer time than the first reference time.

[0004] In addition, according to one aspect of one embodiment of the present disclosure, a method for controlling an air conditioner is provided. The method for controlling an air conditioner includes a step of performing an air conditioning operation. In addition, the method for controlling an air conditioner includes a step of setting a first mode for activating a detection sensor or a second mode for deactivating the detection sensor based on a user input. In addition, the method for controlling an air conditioner includes a step of stopping the air conditioning operation when it is determined that no person is present in the target space for a first reference time based on a sensor detection value of the detection sensor while performing the air conditioning operation in a state in which the detection sensor is activated in the first mode. In addition, the method for controlling an air conditioner includes a step of activating the detection sensor when a second reference time has elapsed from the start time of the air conditioning operation while performing the air conditioning operation in a state in which the detection sensor is deactivated in the second mode; and a step of stopping the air conditioning operation when it is determined that no person is present in the air-conditioned area based on the sensor detection value. The second reference time is a longer time than the first reference time.

[0005] In addition, according to one aspect of one embodiment of the present disclosure, a computer-readable recording medium having recorded thereon a program for performing an air conditioner control method on a computer is provided.

[0006] FIG. 1 is a drawing showing the operation of an air conditioner according to one embodiment of the present disclosure.

[0007] FIG. 2 is a drawing showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0008] FIG. 3 is a flowchart illustrating an air conditioner control method according to one embodiment of the present disclosure.

[0009] FIG. 4 is a drawing showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0010] FIG. 5 is a flowchart illustrating the operation of an air conditioner in a second mode according to one embodiment of the present disclosure.

[0011] FIG. 6 is a block diagram showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0012] FIG. 7 is a flowchart illustrating the operation of an air conditioner in a second mode according to one embodiment of the present disclosure.

[0013] FIG. 8 is a flowchart illustrating a process of performing a time monitoring operation in a second mode according to one embodiment of the present disclosure.

[0014] FIG. 9 is a diagram illustrating a process of stopping an air conditioning operation according to one embodiment of the present disclosure.

[0015] FIG. 10 is a diagram illustrating a process for determining a second reference time according to one embodiment of the present disclosure.

[0016] FIG. 11 is a diagram illustrating a cooking appliance, a user device, and a server according to one embodiment of the present disclosure.

[0017] FIG. 12 is a diagram illustrating an operation of providing a notification message that the air conditioning operation of the air conditioner has been stopped in a second mode according to one embodiment of the present disclosure.

[0018] FIG. 13 is a diagram illustrating a process for providing information on automatically shutting down an air conditioner in a second mode according to one embodiment of the present disclosure.

[0019] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0020] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0021] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0022] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0023] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0024] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0025] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0026] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0027] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0028] When we say that a component is “on” another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0029] An air conditioner according to various embodiments is a device that performs functions such as air purification, ventilation, humidity control, cooling or heating in an air-conditioned space (hereinafter referred to as “indoor”), and means a device equipped with at least one of these functions.

[0030] According to one embodiment of the present disclosure, an air conditioner may include a heat pump device to perform a cooling function or a heating function. The heat pump device may include a refrigeration cycle in which a refrigerant circulates along a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. All components of the heat pump device may be housed in a single housing forming the exterior of the air conditioner, such as a window air conditioner or a portable air conditioner. On the other hand, some components of the heat pump device may be housed separately in multiple housings forming a single air conditioner, such as a wall-mounted air conditioner, a standing air conditioner, a system air conditioner, etc.

[0031] An air conditioner including a plurality of housings may include at least one outdoor unit installed outdoors and at least one indoor unit installed indoors. For example, the air conditioner may be configured such that one outdoor unit and one indoor unit are connected via a refrigerant pipe. For example, the air conditioner may be configured such that one outdoor unit is connected to two or more indoor units via refrigerant pipes. For example, the air conditioner may be configured such that two or more outdoor units and two or more indoor units are connected via a plurality of refrigerant pipes.

[0032] The outdoor unit can be electrically connected to the indoor unit. For example, information (or commands) for controlling the air conditioner can be input through an input interface provided on the outdoor or indoor unit, and the outdoor and indoor units can operate simultaneously or sequentially in response to user input.

[0033] The air conditioner may include an outdoor heat exchanger provided in the outdoor unit, an indoor heat exchanger provided in the indoor unit, and a refrigerant pipe connecting the outdoor heat exchanger and the indoor heat exchanger.

[0034] An outdoor heat exchanger can utilize a phase change (e.g., evaporation or condensation) of the refrigerant to exchange heat between the refrigerant and the outdoor air. For example, while the refrigerant condenses in the outdoor heat exchanger, it releases heat to the outdoor air, and while the refrigerant flowing in the outdoor heat exchanger evaporates, it absorbs heat from the outdoor air.

[0035] Indoor units are installed indoors. For example, indoor units can be categorized into ceiling-mounted, stand-alone, and wall-mounted types depending on their placement. For example, ceiling-mounted indoor units can be categorized into four-way, one-way, and duct-type indoor units depending on how air is discharged.

[0036] Similarly, an indoor heat exchanger can utilize the phase change of the refrigerant (e.g., evaporation or condensation) to exchange heat between the refrigerant and indoor air. For example, while the refrigerant evaporates in the indoor unit, the refrigerant can absorb heat from the indoor air. The cooled indoor air can then be blown through the cooled indoor heat exchanger, thereby cooling the room. Furthermore, while the refrigerant condenses in the indoor heat exchanger, the refrigerant can release heat to the indoor air. By blowing the heated indoor air through the high-temperature indoor heat exchanger, the room can be heated.

[0037] That is, the air conditioner performs a cooling or heating function through a phase change process of the refrigerant circulating between the outdoor heat exchanger and the indoor heat exchanger. To circulate the refrigerant, the air conditioner may include a compressor that compresses the refrigerant. The compressor can suck in refrigerant gas through the suction port and compress the refrigerant gas. The compressor can discharge the high-temperature and high-pressure refrigerant gas through the discharge port. The compressor may be placed inside the outdoor unit.

[0038] The refrigerant may circulate through the refrigerant pipe in the order of a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger, or in the order of a compressor, an indoor heat exchanger, an expansion device, and an outdoor heat exchanger.

[0039] For example, if an air conditioner has one outdoor unit and one indoor unit directly connected through a refrigerant pipe, the refrigerant may be arranged to circulate between one outdoor unit and one indoor unit through the refrigerant pipe.

[0040] For example, in an air conditioner, if one outdoor unit is connected to two or more indoor units via refrigerant pipes, the refrigerant can flow to multiple indoor units via refrigerant pipes branching from the outdoor unit. The refrigerant discharged from the multiple indoor units can be combined and circulated to the outdoor unit. For example, multiple indoor units can be directly connected in parallel to a single outdoor unit via separate refrigerant pipes.

[0041] Multiple indoor units can operate independently, each according to a user-defined operating mode. That is, some indoor units can operate in cooling mode, while others operate in heating mode. In this case, the refrigerant can be selectively introduced into each indoor unit at either high or low pressure along a designated circulation path via a flow-through valve, described later, and then discharged to the outdoor unit for circulation.

[0042] For example, when an air conditioner has two or more outdoor units and two or more indoor units connected through multiple refrigerant pipes, the refrigerant discharged from the multiple outdoor units may join and flow through a single refrigerant pipe, then branch off again at some point and flow into multiple indoor units.

[0043] Multiple outdoor units may all be operated, or at least some may not be operated, depending on the operating load of the multiple indoor units. In this case, the refrigerant may be introduced into the outdoor unit, which is selectively operated, through a flow switching valve and circulated there. The air conditioner may include an expansion device to reduce the pressure of the refrigerant flowing into the heat exchanger. For example, the expansion device may be located within the indoor unit, the outdoor unit, or both.

[0044] An expansion device can, for example, utilize a throttling effect to lower the temperature and pressure of the refrigerant. The expansion device may include an orifice capable of reducing the cross-sectional area of ​​the flow path. Refrigerant passing through the orifice may experience a decrease in temperature and pressure.

[0045] The expansion device may be implemented as, for example, an electronic expansion valve capable of controlling the opening ratio (the ratio of the cross-sectional area of ​​the valve's flow path when partially open to the cross-sectional area of ​​the valve's flow path when fully open). Depending on the opening ratio of the electronic expansion valve, the amount of refrigerant passing through the expansion device can be controlled.

[0046] The air conditioner may further include a flow diverter valve positioned along the refrigerant circulation path. The flow diverter valve may include, for example, a four-way valve. The flow diverter valve may determine the refrigerant circulation path depending on the indoor unit's operating mode (e.g., cooling operation or heating operation). The flow diverter valve may be connected to the discharge port of the compressor.

[0047] The air conditioner may include an accumulator. The accumulator may be connected to the suction port of the compressor. The accumulator may receive low-temperature, low-pressure refrigerant vaporized in an indoor heat exchanger or an outdoor heat exchanger.

[0048] The accumulator can separate the refrigerant liquid from the refrigerant gas when a refrigerant mixture of refrigerant liquid and refrigerant gas is introduced, and provide the refrigerant gas from which the refrigerant liquid has been separated to the compressor.

[0049] An outdoor fan may be installed near the outdoor heat exchanger. The outdoor fan may blow outdoor air to the outdoor heat exchanger to promote heat exchange between the refrigerant and the outdoor air.

[0050] The outdoor unit of the air conditioner may include at least one sensor. For example, the sensor of the outdoor unit may be provided as an environmental sensor. The outdoor unit sensor may be positioned at any location inside or outside the outdoor unit. For example, the outdoor unit sensor may include a temperature sensor for detecting the air temperature around the outdoor unit, a humidity sensor for detecting the air humidity around the outdoor unit, a refrigerant temperature sensor for detecting the refrigerant temperature of a refrigerant pipe passing through the outdoor unit, or a refrigerant pressure sensor for detecting the refrigerant pressure of a refrigerant pipe passing through the outdoor unit.

[0051] An outdoor unit of an air conditioner may include an outdoor unit communication unit. The outdoor unit communication unit may be configured to receive a control signal from a control unit of an indoor unit of the air conditioner, which will be described later. The outdoor unit may control the operation of a compressor, an outdoor heat exchanger, an expansion device, a flow switching valve, an accumulator, or an outdoor fan based on the control signal received through the outdoor unit communication unit. The outdoor unit may transmit a sensing value detected by an outdoor unit sensor to the control unit of the indoor unit through the outdoor unit communication unit.

[0052] The indoor unit of the air conditioner may include a housing, a blower for circulating air into or out of the housing, and an indoor heat exchanger for exchanging heat with air flowing into the interior of the housing.

[0053] The housing may include an intake port through which indoor air may be drawn into the interior of the housing.

[0054] The indoor unit of the air conditioner may include a filter that is provided to filter foreign substances in the air that flows into the housing through the intake port.

[0055] The housing may include an exhaust port. Air flowing within the housing may be discharged to the exterior of the housing through the exhaust port.

[0056] The housing of the indoor unit may be provided with an airflow guide that guides the direction of air discharged through the exhaust port. For example, the airflow guide may include blades positioned above the exhaust port. For example, the airflow guide may include an auxiliary fan for controlling the exhaust airflow. However, the airflow guide is not limited thereto and may be omitted.

[0057] An indoor heat exchanger and a blower may be provided inside the housing of the indoor unit, which are arranged on a path connecting the intake and exhaust ports.

[0058] Blowers may include indoor fans and fan motors. For example, indoor fans may include axial fans, diffusion fans, crossflow fans, and centrifugal fans.

[0059] An indoor heat exchanger may be positioned between the blower and the exhaust, or between the intake and the blower. The indoor heat exchanger may absorb heat from air drawn in through the intake or transfer heat to the air drawn in through the intake. The indoor heat exchanger may include heat exchange tubes through which refrigerant flows, and heat exchange fins in contact with the heat exchange tubes to increase the heat transfer surface area.

[0060] The indoor unit of the air conditioner may include a drain tray positioned below the indoor heat exchanger to collect condensate generated in the indoor heat exchanger. The condensate collected in the drain tray may be drained to the outside through a drain hose. The drain tray may be provided to support the indoor heat exchanger.

[0061] The indoor unit of the air conditioner may include an input interface. The input interface may include any type of user input means, including buttons, switches, a touch screen, and / or a touch pad. The user can directly input setting data (e.g., desired indoor temperature, operating mode settings for cooling / heating / dehumidification / air purification, outlet selection settings, and / or air flow settings) through the input interface.

[0062] The input interface may also be connected to an external input device. For example, the input interface may be electrically connected to a wired remote controller. The wired remote controller may be installed at a specific location in an indoor space (e.g., a portion of a wall). A user may input configuration data regarding the operation of the air conditioner by operating the wired remote controller. Electrical signals corresponding to the configuration data obtained through the wired remote controller may be transmitted to the input interface. In addition, the input interface may include an infrared sensor. A user may remotely input configuration data regarding the operation of the air conditioner using the wireless remote controller. The configuration data input through the wireless remote controller may be transmitted to the input interface as an infrared signal.

[0063] Additionally, the input interface may include a microphone. A user's voice command may be acquired through the microphone. The microphone may convert the user's voice command into an electrical signal and transmit the converted electrical signal to an indoor unit control unit. The indoor unit control unit may control components of the air conditioner to execute a function corresponding to the user's voice command. Setting data acquired through the input interface (e.g., desired indoor temperature, operation mode settings for cooling / heating / dehumidification / air purification, outlet selection settings, and / or air volume settings) may be transmitted to the indoor unit control unit, which will be described later. In one example, the setting data acquired through the input interface may be transmitted externally, i.e., to an outdoor unit or a server, through an indoor unit communication unit, which will be described later.

[0064] The indoor unit of the air conditioner may include a power module. The power module may be connected to an external power source to supply power to the components of the indoor unit.

[0065] An indoor unit of an air conditioner may include an indoor unit sensor. The indoor unit sensor may be an environmental sensor positioned in a space inside or outside the housing. For example, the indoor unit sensor may include one or more temperature sensors and / or humidity sensors positioned in a predetermined space inside or outside the housing of the indoor unit. For example, the indoor unit sensor may include a refrigerant temperature sensor for detecting a refrigerant temperature of a refrigerant pipe passing through the indoor unit. For example, the indoor unit sensor may include respective refrigerant temperature sensors for detecting the inlet, middle, and / or outlet temperatures of the refrigerant pipe passing through the indoor heat exchanger.

[0066] For example, each environmental information detected by an indoor unit sensor can be transmitted to the indoor unit control unit described later or transmitted externally through the indoor unit communication unit described later.

[0067] The indoor unit of the air conditioner may include an indoor unit communication unit. The indoor unit communication unit may include at least one of a short-range communication module and a long-range communication module. The indoor unit communication unit may include at least one antenna for wireless communication with other devices. The outdoor unit may include an outdoor unit communication unit. The outdoor unit communication unit may also include at least one of a short-range communication module and a long-range communication module.

[0068] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0069] The remote communication module may include a communication module that performs various types of remote communication and may include a mobile communication unit. The mobile communication unit transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0070] The indoor unit communication unit can communicate with external devices such as servers, mobile devices, and other home appliances through a nearby access point (AP). The access point (AP) can connect a local area network (LAN) to which the air conditioner or user device is connected to a wide area network (WAN) to which the server is connected. The air conditioner or user device can be connected to the server through the wide area network (WAN). The indoor unit of the air conditioner may include an indoor unit control unit that controls components of the indoor unit, including a blower, etc. The outdoor unit of the air conditioner may include an outdoor unit control unit that controls components of the outdoor unit, including a compressor, etc. The indoor unit control unit can communicate with the outdoor unit control unit through the indoor unit communication unit and the outdoor unit communication unit. The outdoor unit communication unit can transmit control signals generated by the outdoor unit control unit to the indoor unit communication unit, or transmit control signals transmitted from the indoor unit communication unit to the outdoor unit control unit. In other words, the outdoor unit and the indoor unit can communicate bidirectionally. The outdoor unit and the indoor unit can transmit and receive various signals generated during the operation of the air conditioner.

[0071] The outdoor unit control unit can be electrically connected to components of the outdoor unit and can control the operation of each component. For example, the outdoor unit control unit can adjust the frequency of the compressor and control the flow switching valve to change the circulation direction of the refrigerant. The outdoor unit control unit can adjust the rotation speed of the outdoor fan. In addition, the outdoor unit control unit can generate a control signal to adjust the opening degree of the expansion valve. Under the control of the outdoor unit control unit, the refrigerant can circulate along a refrigerant circulation circuit including the compressor, the flow switching valve, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger.

[0072] The various temperature sensors included in the outdoor and indoor units can transmit electrical signals corresponding to the detected temperatures to the outdoor unit control unit and / or the indoor unit control unit. For example, the humidity sensors included in the outdoor and indoor units can transmit electrical signals corresponding to the detected humidity to the outdoor unit control unit and / or the indoor unit control unit.

[0073] The indoor unit control unit can obtain user input from a user device, including a mobile device, via the indoor unit communication unit, and can obtain user input directly through the input interface or via a remote controller. The indoor unit control unit can control components of the indoor unit, including a blower, in response to the received user input. The indoor unit control unit can transmit information regarding the received user input to the outdoor unit control unit of the outdoor unit.

[0074] The outdoor unit control unit can control the components of the outdoor unit, including the compressor, based on information regarding user input received from the indoor unit. For example, when a control signal corresponding to a user input for selecting an operation mode, such as cooling operation, heating operation, ventilation operation, defrosting operation, or dehumidification operation, is received from the indoor unit, the outdoor unit control unit can control the components of the outdoor unit so that the air conditioner performs an operation corresponding to the selected operation mode.

[0075] The outdoor unit control unit and the indoor unit control unit may each include a processor and a memory. The indoor unit control unit may include at least one first processor and at least one first memory, and the outdoor unit control unit may include at least one second processor and at least one second memory.

[0076] The memory can store / remember various information necessary for the operation of the air conditioner. The memory can store instructions, applications, data, and / or programs necessary for the operation of the air conditioner. For example, the memory can store various programs for the cooling, heating, dehumidifying, and / or defrosting operations of the air conditioner. The memory can include volatile memory such as Static Random Access Memory (S-RAM) and Dynamic Random Access Memory (DRAM) for temporarily storing data. In addition, the memory can include non-volatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), and Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term storage of data.

[0077] The processor can generate control signals for controlling the operation of the air conditioner based on instructions, applications, data, and / or programs stored in memory. The processor, as hardware, may include logic circuits and arithmetic circuits. The processor can process data according to programs and / or instructions provided from the memory and generate control signals based on the processing results. The memory and the processor may be implemented as a single control circuit or as multiple circuits.

[0078] An indoor unit of an air conditioner may include an output interface. The output interface is electrically connected to the indoor unit control unit and can output information related to the operation of the air conditioner under the control of the indoor unit control unit. For example, information such as an operating mode selected by a user input, wind direction, wind volume, and temperature may be output. Additionally, the output interface may output sensing information obtained from an indoor unit sensor or an outdoor unit sensor, as well as warning / error messages.

[0079] The output interface may include a display and a speaker. The speaker, as an audio device, can output various sounds. The display may display information input by the user or information provided to the user using various graphic elements. For example, operation information of an air conditioner may be displayed as at least an image or text. The display may also include an indicator that provides specific information. The display may include a liquid crystal display panel (LCD), a light emitting diode panel (LED), an organic light emitting diode panel (OLED), a micro LED panel, and / or a plurality of LEDs.

[0080] Hereinafter, air conditioners according to various embodiments will be specifically described with reference to the drawings.

[0081] FIG. 1 is a drawing showing the operation of an air conditioner according to one embodiment of the present disclosure.

[0082] According to one embodiment of the present disclosure, an air conditioner (100) performs an air conditioning operation for a target space (120). The air conditioning operation may include, for example, cooling, heating, air purification, dehumidification, or ventilation. The air conditioner (100) may be implemented in the form of a ceiling-type air conditioner, a standing air conditioner, a ceiling-type air conditioner, a standing air conditioner, an air purifier, or a dehumidifier.

[0083] The air conditioner (100) may include a detection sensor (110). The detection sensor (110) detects an object within a target space (120). The air conditioner (100) may determine whether a person (130) exists within the target space (120) using a sensor detection value of the detection sensor (110). The air conditioner (100) may control the on / off of the air conditioning operation based on whether a person (130) exists within the target space (120).

[0084] According to one embodiment of the present disclosure, the air conditioner (100) can prevent abnormal operation based on whether a person (130) is present in the target space (120). If the air conditioner (100) determines that no person (130) is present in the target space (120) for a predetermined period of time using a sensor detection value of the detection sensor (110), the air conditioner (100) can stop the air conditioning operation to save energy. However, for reasons such as privacy protection, the user can deactivate the detection sensor (110). If the detection sensor (110) is deactivated, the air conditioner (100) can continue to perform the air conditioning operation regardless of whether a person (130) is present in the target space (12), unless the user turns off the air conditioner (100). However, if a situation occurs, such as when a user forgets to turn off the air conditioner (100) and goes out, the air conditioner (100) may malfunction due to the air conditioner (100) operating for an excessively long period of time. According to one embodiment of the present disclosure, if the user deactivates the detection sensor (110), the detection sensor (110) is temporarily turned on to prevent abnormal operation of the air conditioner (100) in order to prevent the air conditioner (100) from operating for an extended period of time to the extent that there is a risk of malfunction of the air conditioner (100). According to one embodiment of the present disclosure, if the air conditioner (100) performs an air conditioning operation for a first reference time or longer while the detection sensor (110) is deactivated, the detection sensor (110) may be turned on, and if there is no person (130) in the target space (120), the air conditioning operation may be stopped.

[0085] Meanwhile, if the user opens the window (140) of the target space (120) while performing the air conditioning operation, even if the air conditioner (100) performs the air conditioning operation, the effects of cooling, heating, etc. are significantly reduced. According to one embodiment of the present disclosure, if the air conditioner (100) performs the air conditioning operation for a second reference time or longer while the detection sensor (110) is inactivated, the detection sensor (110) is turned on, and if there is no person (130) in the target space (120) and the difference between the indoor temperature and the target temperature exceeds the temperature reference value, the air conditioning operation can be stopped.

[0086] According to one embodiment of the present disclosure, when the detection sensor (110) is deactivated, there is a remarkable effect of preventing abnormal operation and failure of the air conditioner (100) by forcibly activating the detection sensor (110) under a predetermined condition and controlling the on / off of the air conditioning operation depending on the presence of a person.

[0087] FIG. 2 is a drawing showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0088] According to one embodiment of the present disclosure, an air conditioner (100) includes a detection sensor (110), a processor (210), an air conditioning module (212), and a memory (214). The block diagram of the air conditioner (100) of FIG. 2 may correspond to the block diagram of an indoor unit.

[0089] The air conditioner (100) can be implemented in various installation forms. For example, the air conditioner (100) can be implemented in a stand form, a wall-mounted form, a system air conditioner built into the ceiling form, or a home multi-air conditioner form.

[0090] The detection sensor (110) can detect an object in a target space (120). The detection sensor (110) may include, for example, a ToF (Time of Flight) sensor, an ultrasonic sensor, an infrared sensor, an optical sensor, a radar (radio detection and ranging) sensor, or a LiDAR (light detection and ranging) sensor. The detection sensor (110) is arranged to output a signal into the target space (120) and detect a reflected signal. The detection sensor (110) may be arranged in front of the air conditioner (100) toward the target space (120).

[0091] The processor (210) controls the overall operation of the air conditioner (100). The processor (210) may be implemented with one or more processors. The processor (210) may execute instructions or commands stored in the memory (214) to perform a predetermined operation. In addition, the processor (210) controls the operation of components provided in the air conditioner (100). The processor (210) may include a Central Processing Unit (CPU), a microprocessor, etc.

[0092] The processor (210) determines whether there is a moving object using the sensor detection value of the detection sensor (110), and if there is a moving object, determines that there is a person in the target space (120). According to one embodiment of the present disclosure, the processor (210) determines whether the detected object is a person using the sensor detection value. For example, if the detection sensor (110) corresponds to an infrared sensor, the processor (210) determines that there is a person in the target space (120) if an infrared value corresponding to a person is detected. According to one embodiment of the present disclosure, the processor (210) determines whether the detected object has a human shape based on the sensor detection value, and if the detected object corresponds to a human shape, determines that there is a human in the target space (120).

[0093] The air conditioning module (212) performs air conditioning operations. The air conditioning module (212) controls cooling, cooling intensity, heating, heating intensity, air volume, etc. based on a control signal or drive signal input from the processor (210). The air conditioning module (212) may include a heat exchanger, a motor, an inverter, a fan, a filter, etc. The air conditioning module (212) is provided with a heat exchanger and may perform heat exchange between the refrigerant and indoor air by utilizing a phase change (e.g., expansion or compression) of the refrigerant in the heat exchanger. For example, while the refrigerant expands in the heat exchanger, the refrigerant may absorb heat from the indoor air, and the indoor air may be cooled. While the refrigerant is compressed in the heat exchanger, the refrigerant may release heat to the indoor air, and the indoor air may be heated.

[0094] The processor (210) can operate in a first mode in which the detection sensor (110) is activated and a second mode in which the detection sensor (110) is deactivated. The processor (210) can operate in the first mode or the second mode based on a user input selecting the first mode or the second mode.

[0095] In the first mode, the processor (210) activates the detection sensor (110), and if it is determined that there is no person in the target space (120) for a first reference time or longer after performing the air conditioning operation based on the detection value of the detection sensor (110), the air conditioning operation is stopped. According to one embodiment of the present disclosure, if it is determined that there is no person in the target space (120) for a predetermined time or longer while performing the air conditioning operation, the air conditioning operation is stopped to save power. The first reference time may be set to, for example, 30 minutes. The first reference time may be a time within 1 hour.

[0096] In the second mode, the processor (210) deactivates the detection sensor (110). In the second mode, the processor (210) can perform an air conditioning operation with the detection sensor (110) deactivated. After performing the air conditioning operation, if a second reference time elapses, the processor (210) activates the detection sensor (110). Based on the detection value of the detection sensor (110), the processor (210) determines whether a person exists in the target space (120). If a person exists in the target space (120), the processor (210) continues to perform the air conditioning operation. If no person exists in the target space (120), the processor (210) stops the air conditioning operation. The second reference time is a longer time than the first reference time. The second reference time may be set to, for example, 24 hours, 48 ​​hours, etc.

[0097] The memory (214) stores various information, data, commands, programs, etc. required for the operation of the air conditioner (100). The memory (214) may include at least one of volatile memory and non-volatile memory, or a combination thereof. The memory (214) may include at least one type of storage medium among a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory, etc.), a RAM (Random Access Memory), a SRAM (Static Random Access Memory), a ROM (Read-Only Memory), an EEPROM (Electrically Erasable Programmable Read-Only Memory), a PROM (Programmable Read-Only Memory), a magnetic memory, a magnetic disk, and an optical disk. In addition, the memory (214) may correspond to a web storage or cloud server that performs a storage function on the Internet.

[0098] FIG. 3 is a flowchart illustrating an air conditioner control method according to one embodiment of the present disclosure.

[0099] An air conditioner control method according to one embodiment of the present disclosure can be performed by an air conditioner (100) according to one embodiment of the present disclosure.

[0100] The air conditioner (100) performs an air conditioning operation in step S302. The air conditioner (100) can perform the air conditioning operation based on a user input that controls the air conditioning operation. According to one embodiment of the present disclosure, the air conditioner (100) can receive a user input through an input interface of the air conditioner (100) (e.g., a remote controller, a button, a touch screen, a touch pad, a key, etc.). In addition, according to one embodiment of the present disclosure, the air conditioner (100) can receive a user input from an external device through a communication module. The air conditioner (100) can perform an air conditioning operation such as cooling or heating.

[0101] Next, in step S304, the air conditioner (100) sets a first mode for activating the detection sensor (110) or a second mode for deactivating the detection sensor based on a user input. The user can select whether to activate the detection sensor (110) of the air conditioner (100) through an input interface or an external device. If the user input selects to activate the detection sensor (110), the air conditioner (100) operates in the first mode. If the user input selects to deactivate the detection sensor (110), the air conditioner (100) operates in the second mode.

[0102] If the first mode is set in step S304, the air conditioner (100) activates the detection sensor (110) in step S306. The air conditioner (100) uses the activated detection sensor (110) to detect an object within the target space and determines whether a person is present.

[0103] In step S308, the air conditioner (100) determines whether the time during which no person is present, i.e., the non-detection time, is longer than or equal to the first reference time (T1) while performing the air conditioning operation. Here, the non-detection time refers to the time during which no person is continuously present. If a person is detected based on the sensor detection value of the detection sensor (110), the non-detection time is reset to 0 again, and the processor (210) counts the non-detection time again.

[0104] When the time during which no person is present reaches the first reference time (T1), the air conditioner (100) stops the air conditioning operation in step S310. For example, the air conditioner (100) stops the cooling operation when the time during which no person is detected reaches the first reference time (T1).

[0105] When set to the second mode in step S304, the air conditioner (100) deactivates the detection sensor (110) in step S312. By deactivating the detection sensor (110), the air conditioner (100) cannot detect a person in the target space.

[0106] Next, in step S314, it is determined whether the execution time of the air conditioning operation of the air conditioner (100) is longer than or equal to the second reference time (T2). The execution time of the air conditioning operation refers to the time for which the air conditioning operation is continuously performed. The execution time of the air conditioning operation is counted from the time the air conditioning operation is initiated. If the air conditioning operation is interrupted in the middle, the execution time of the air conditioning operation is reset and counted again.

[0107] If it is determined in step S314 that the execution time of the air conditioning operation is longer than the second reference time (T2), the air conditioner (100) activates the detection sensor (110) in step S316. By activating the detection sensor (110), the air conditioner (100) acquires a sensor detection value related to an object in the target space and performs an operation of detecting a person.

[0108] In step S318, the air conditioner (100) determines whether a person is present in the target space based on the sensor detection value of the detection sensor (110). If no person is present in the target space, the air conditioner (100) stops the air conditioning operation in step S320. If it is determined in step S318 that a person is present in the target space, the air conditioner (100) deactivates the detection sensor (110) again.

[0109] FIG. 4 is a drawing showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0110] In order to avoid duplication of explanation in Fig. 4, explanations that overlap with the air conditioner (100) described in Fig. 2 are omitted, and explanations are given focusing on differences.

[0111] An air conditioner (100) according to one embodiment of the present disclosure includes a detection sensor (110), a processor (210), an air conditioning module (212), a memory (214), and a temperature sensor (410).

[0112] The temperature sensor (410) measures the temperature of the target space. The temperature sensor (410) includes a contact temperature sensor or a non-contact temperature sensor. The temperature sensor (410) may include, for example, an RTD (Resistance Temperature Detector) temperature sensor, a thermocouple, or a thermistor. The temperature sensor (410) measures the temperature and generates a temperature measurement value.

[0113] The processor (210) receives a temperature measurement value from the temperature sensor (410) and acquires indoor temperature information. When performing an air conditioning operation, the processor (210) performs the air conditioning operation at a target temperature. The target temperature can be set by user input. The processor (210) performs the air conditioning operation to adjust the indoor temperature to the target temperature by comparing the temperature measurement value with the target temperature value.

[0114] According to one embodiment of the present disclosure, when the processor (210) operates in the second mode, based on the temperature measurement value, the processor (210) activates the monitoring sensor (110) and controls the air conditioning operation depending on the presence of a person. When the temperature detection operation time of the air conditioning operation is longer than or equal to a third reference time while performing the air conditioning operation in the second mode, the processor (210) determines whether the difference between the temperature measurement value and the target temperature value exceeds the temperature reference value. The temperature detection operation time is a time defined for temperature monitoring using the temperature detection value to determine whether the detection sensor is activated in the second mode. The temperature detection operation time is counted from the time when the air conditioning operation starts, and if the detection sensor is activated using the temperature detection value to determine whether the detection sensor is activated in the second mode, the temperature detection operation time is counted from the time when the last temperature detection value is used. The third reference time is a time shorter than the second reference time. When the difference between the temperature measurement value and the target temperature value exceeds the temperature reference value, the processor (210) activates the detection sensor (110) and determines whether a person is present in the target space. The temperature reference value can be determined, for example, in the range of 2 to 3 degrees. If a person is present in the target space, the processor (210) deactivates the detection sensor (110) again. If no person is present in the target space, the processor (210) stops the air conditioning operation.

[0115] According to one embodiment of the present disclosure, there is an effect of protecting the air conditioner (100) by preventing the air conditioning operation from being performed for a long time in an abnormal situation such as when a window is open.

[0116] FIG. 5 is a flowchart illustrating the operation of an air conditioner in a second mode according to one embodiment of the present disclosure.

[0117] According to one embodiment of the present disclosure, when the air conditioner (100) is set to the second mode in step S306, the air conditioner (100) deactivates the detection sensor (110) in step S312. After the detection sensor (110) is deactivated, the air conditioner (100) performs two monitoring operations.

[0118] A time monitoring operation is described. The air conditioner (100) determines in step S314 whether the operating time of the air conditioning operation is longer than or equal to the second reference time (T2). If the operating time of the air conditioning operation is longer than or equal to the second reference time (T2), the air conditioner (100) activates the detection sensor (110) in step S316. Next, the air conditioner (100) determines in step S318 whether a person exists in the target space based on the sensor detection value of the detection sensor (110). If it is determined in step S318 that no person exists in the target space, the air conditioner (100) stops the air conditioning operation in step S320. If it is determined in step S318 that a person exists in the target space, the air conditioner (100) proceeds to step S312 and deactivates the detection sensor (110). According to one embodiment of the present disclosure, if it is determined in step S318 that a person is present in the target space, the air conditioner (100) resets the operation time and proceeds to step S312 to deactivate the detection sensor (110).

[0119] Next, the temperature monitoring operation will be described. In step S502, the air conditioner (100) determines whether the temperature detection operation time of the air conditioning operation is longer than a third reference time (T3). The third reference time (T3) is a time shorter than the second reference time (T2). The third reference time (T3) can be determined within a range of, for example, 1 to 2 hours. If the temperature detection operation time of the air conditioning operation is longer than the third reference time (T3), the air conditioner (100) determines in step S504 whether the difference between the temperature measurement value (TEMPs) and the temperature reference value (TEMPr) exceeds the temperature reference value.

[0120] If, in step S504, the difference between the temperature measurement value (TEMPs) and the temperature reference value (TEMPr) does not exceed the temperature reference value, the air conditioner (100) resets the temperature detection operation time and proceeds to step S502 again.

[0121] If, in step S504, the difference between the temperature measurement value (TEMPs) and the temperature reference value (TEMPr) exceeds the temperature reference value, the air conditioner (100) activates the detection sensor (110) in step S506. Next, in step S508, the air conditioner (100) determines whether a person is present in the target space based on the sensor detection value of the detection sensor (110).

[0122] If it is determined in step S508 that no person is present, the air conditioner (100) stops the air conditioning operation in step S510.

[0123] If the air conditioner (100) determines that a person is present in step S508, it resets the temperature detection operation time and proceeds to step S312 to deactivate the detection sensor (110).

[0124] According to one embodiment of the present disclosure, if the difference between the temperature measurement value (TEMPs) and the temperature reference value (TEMPr) does not exceed the temperature reference value in step S504, and if it is determined that a person is present in step S508, it is also possible to terminate the temperature monitoring operation without proceeding to step S502. In this case, the air conditioner (100) may perform temperature monitoring only once when the third reference time (T3) is reached after initiating the air conditioning operation, and may not perform the temperature monitoring operation thereafter.

[0125] FIG. 6 is a block diagram showing the structure of an air conditioner according to one embodiment of the present disclosure.

[0126] In order to avoid duplication of explanation, in Fig. 6, descriptions that overlap with the air conditioner (100) described in Fig. 2 are omitted, and the differences are described. The embodiment of Fig. 6 can also be combined with the embodiment of Fig. 4 described above.

[0127] An air conditioner (100) according to one embodiment of the present disclosure includes a detection sensor (110), a processor (210), an air conditioning module (212), a memory (214), an input interface (610), and a communication module (620). Although FIG. 6 illustrates an embodiment in which the air conditioner (100) includes both the input interface (610) and the communication module (620), an embodiment in which the air conditioner (100) includes only one of the input interface (610) and the communication module (620) is also possible.

[0128] The air conditioner (100) can receive various types of user inputs through the input interface (610) or communication module (620).

[0129] The input interface (610) receives input from a user. The input interface (610) may include keys, a touch screen, a touch pad, a touch sensor, etc. The input interface (610) receives user input and transmits it to the processor (210). The input interface (610) may receive a power on / off signal, a temperature setting signal, an operation mode selection signal, a blower strength selection signal, a sleep reservation signal, a reservation operation setting signal, a wind direction setting signal, etc.

[0130] According to one embodiment of the present disclosure, the input interface (610) can receive a human detection mode selection signal that selects activation or deactivation of the detection sensor (110).

[0131] The communication module (620) can communicate with at least one external device, either wired or wirelessly. According to one embodiment of the present disclosure, the communication module (212) communicates wirelessly with a remote controller. The communication module (610) can receive a power on / off signal, a temperature setting signal, an operation mode selection signal, a blower strength selection signal, a sleep reservation signal, a reservation operation setting signal, a wind direction setting signal, etc. from the remote controller. The communication module (610) can transmit status information of the air conditioner (100) to the remote controller to synchronize the status information of the remote controller and the air conditioner (100).

[0132] According to one embodiment of the present disclosure, the communication module (610) can receive a human detection mode selection signal that selects activation or deactivation of the detection sensor (110).

[0133] Additionally, according to one embodiment of the present disclosure, the communication module (610) can communicate with the outdoor unit. For example, the communication module (610) can communicate with the outdoor unit using RS-485 serial communication.

[0134] In addition, according to one embodiment of the present disclosure, the communication module (610) can communicate with a server via a network. The communication module (610) can connect to the network through an AP (Access Point) device and communicate with the server. The communication module (610) can receive a human detection mode selection signal from the server. In addition, the communication module (610) can receive a power on / off signal, a temperature setting signal, an operation mode selection signal, a blower intensity selection signal, a sleep reservation signal, a reservation operation setting signal, a wind direction setting signal, etc. from the server. The communication module (610) can transmit status information of the air conditioner (100) to the server in order to synchronize the status information of the server and the air conditioner (100). In addition, the communication module (610) can receive the operation mode or setting information of the air conditioner (100) set using a user terminal, etc. from the server.

[0135] The communication module (610) may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a GNSS (global navigation satellite system) communication module) or a wired communication module (e.g., a LAN (local area network) communication module, or a power line communication module). In addition, the communication module (610) may perform short-range communication, and may use, for example, Bluetooth, BLE (Bluetooth Low Energy), near field communication, WLAN (Wi-Fi), Zigbee, infrared (IrDA, infrared Data Association) communication, WFD (Wi-Fi Direct), UWB (ultrawideband), Ant+ communication, etc. In addition, for example, the communication module (610) may perform long-range communication, and may communicate with an external device through, for example, a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN).

[0136] Additionally, for example, the communication module (610) can utilize mobile communication and transmit and receive wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0137] According to one embodiment of the present disclosure, the communication module (610) is connected to an access point (AP) in the home via Wi-Fi communication. The communication module (610) can communicate with an external device via the access point.

[0138] According to one embodiment of the present disclosure, the processor (210) can determine whether to activate the detection sensor (110) based on the elapsed time from the last time a user input was received in the second mode. If the operation time of the air conditioning operation in the second mode is equal to or greater than the second reference time, the processor (210) determines whether a fourth reference time (T4) has elapsed from the last time a user input was received. If the fourth reference time (T4) has elapsed from the time a user input is received, the processor (210) can activate the detection sensor (110) and determine whether a person exists in the target space.

[0139] According to one embodiment of the present disclosure, the air conditioner (100) has the effect of more accurately reflecting the absence of a person by determining whether the detection sensor (110) is activated and the air conditioning operation is stopped by reflecting whether there has been a user's operation.

[0140] FIG. 7 is a flowchart illustrating the operation of an air conditioner in a second mode according to one embodiment of the present disclosure.

[0141] According to one embodiment of the present disclosure, the air conditioner (100) determines, in the second mode, whether the detection sensor is activated and whether the air conditioning operation is stopped based on the last user input reception time when the user input was received.

[0142] First, when the air conditioner (100) is set to the second mode in step S306, the detection sensor (110) is deactivated in step S312. In step S314, the air conditioner (100) determines whether the operating time of the air conditioning operation is longer than the second reference time (T2).

[0143] If it is determined in step S314 that the operating time is longer than the second reference time (T2), the air conditioner (100) determines in step S702 whether a fourth reference time (T4) has elapsed from the time of receiving the user input. The time of receiving the user input is counted from the time of receiving the last user input. If a new user input is received during the counting of the time of receiving the user input, the time from the time of receiving the user input is reset and counted again.

[0144] If it is determined in step S702 that the fourth reference time (T4) has not elapsed from the time of receiving the user input, the air conditioner (100) initializes the operating time in step S704 and proceeds to step S312 to deactivate the detection sensor (110). Even if the operating time has reached the second reference time, if there is a user input within the fourth reference time (T4), the air conditioner (100) may determine that it is not an abnormal operation and may not perform an operation to activate the detection sensor (110).

[0145] If it is determined in step S702 that the fourth reference time (T4) has elapsed from the time of receiving the user input, the air conditioner (100) activates the detection sensor (110) in step S316. Next, in step S318, the air conditioner (100) determines whether a person is present in the target space based on the sensor detection value of the detection sensor (110).

[0146] If there is no person in the target space, the air conditioner (100) stops the air conditioning operation in step S320.

[0147] If a person exists in the target space, the operation time is initialized in step S704. Next, the air conditioner (100) proceeds to step S312 and deactivates the detection sensor (110).

[0148] FIG. 8 is a flowchart illustrating a process of performing a time monitoring operation in a second mode according to one embodiment of the present disclosure.

[0149] According to one embodiment of the present disclosure, when determining whether a person is present based on the operating time in the second mode, the monitoring cycle can be adjusted to be shorter after the first operating time cycle. The second reference time of the second mode may be defined as a time during which the air conditioner (100) is judged to be operating abnormally for a long time, for example, 12 hours, 16 hours, 24 hours, etc. However, if the time monitoring operation is performed with the same second reference time after one second reference time cycle is over, the continuous operating time of the air conditioner (100) may become excessively long. Therefore, after one second reference time cycle is over, the time monitoring operation may be performed using a fifth reference time that is shorter than the second reference time in the next time monitoring operation. For example, the fifth reference time may be set to a time of about 2 to 6 hours.

[0150] First, when the air conditioner (100) is set to the second mode in step S306, the detection sensor (110) is deactivated in step S312.

[0151] Next, the air conditioner (100) determines whether the operating time of the air conditioning operation is longer than or equal to the second reference time (T2) in step S314. If the operating time of the air conditioning operation is longer than or equal to the second reference time (T2), the air conditioner (100) activates the detection sensor (110) in step S316. Next, the air conditioner (100) determines whether a person exists in the target space based on the sensor detection value of the detection sensor (110) in step S318. If it is determined in step S318 that no person exists in the target space, the air conditioner (100) stops the air conditioning operation in step S320. If it is determined in step S318 that a person exists in the target space, the air conditioner (100) proceeds to step S312 and deactivates the detection sensor (110).

[0152] According to one embodiment of the present disclosure, if it is determined in step S318 that a person is present in the target space, the air conditioner (100) deactivates the detection sensor (110) in step S802. Next, in step S804, the air conditioner (100) resets the operating time and counts again. Next, in step S806, the air conditioner (100) determines whether the operating time is equal to or greater than a fifth reference time (T5). If the operating time reaches the fifth reference time (T5), the air conditioner (100) proceeds to step S316, activates the detection sensor (110), and repeats the operation of determining whether a person is present in the target space.

[0153] FIG. 9 is a diagram illustrating a process of stopping an air conditioning operation according to one embodiment of the present disclosure.

[0154] According to one embodiment of the present disclosure, when the air conditioning operation is stopped in the second mode, additional operations may be performed to protect the air conditioner (100). If the air conditioner (100) operates for an excessively long period of time, defects such as water leakage due to condensate may occur. According to one embodiment of the present disclosure, when the air conditioning operation is stopped in the second mode, the air conditioner (100) may perform air conditioner protection operations such as removing condensate.

[0155] Referring to FIG. 9, when the air conditioner (100) stops the air conditioning operation in the first mode in step S310, the power of the air conditioner (100) can be turned off in step S904 without any additional operation.

[0156] If the air conditioner (100) stops the air conditioning operation in the second mode in step S320, the air conditioner (100) may additionally perform a condensate removal operation in step S902. For example, the air conditioner (100) may perform the condensate removal operation by performing a blowing operation for a predetermined period of time. After performing the condensate removal operation, the air conditioner (100) may turn off the power of the air conditioner (100) in step S904.

[0157] FIG. 10 is a diagram illustrating a process for determining a second reference time according to one embodiment of the present disclosure.

[0158] According to one embodiment of the present disclosure, the air conditioner (100) can determine (1020) a second reference time using history information (1010). The air conditioner (100) performs a time monitoring operation using the second reference time to prevent excessively long-term operation. The air conditioner (100) can determine the second reference time by reflecting the user's usage history information or the usage history information of the relevant area.

[0159] According to one embodiment of the present disclosure, the air conditioner (100) determines a second reference time using the user's usage history information. The user corresponds to a user registered with the air conditioner (100). If the air conditioner (100) is registered to a predetermined user account, the air conditioner (100) determines the second reference time using the user's usage history information corresponding to the user account. According to one embodiment of the present disclosure, if the air conditioner (100) is registered to a predetermined server, the second reference time may be determined by the server based on the user history information.

[0160] According to one embodiment of the present disclosure, the air conditioner (100) determines the second reference time based on the user's maximum usage time. According to one embodiment of the present disclosure, the air conditioner (100) determines the second reference time by multiplying the maximum usage time by a predetermined multiple. For example, the air conditioner (100) may determine 150% of the user's maximum usage time as the second reference time. For example, if the user's maximum usage time is 16 hours, the air conditioner (100) may determine 24 hours, which is 150% of 16 hours, as the second reference time.

[0161] In addition, according to one embodiment of the present disclosure, the air conditioner (100) determines the second reference time based on the regional usage history information of the corresponding region. The corresponding region is a region where the air conditioner (100) is installed, and may be set during the manufacturing, sales, or installation of the air conditioner (100). The air conditioner (100) may determine the second reference time based on the average usage history of users in the corresponding region. According to one embodiment of the present disclosure, the air conditioner (100) may determine the second reference time based on the usage time information of the upper section of the maximum usage time of users in the corresponding region. For example, the air conditioner (100) determines the second reference time by multiplying the usage time of the top 10% of the maximum usage time of users in the corresponding region by a predetermined multiple. For example, if the top 10% of the maximum usage time of users in the corresponding region is 14 hours, the air conditioner (100) may determine 21 hours, which is 150% of 14 hours, as the second reference time.

[0162] According to one embodiment of the present disclosure, the second reference time is determined as a default value. The default value of the second reference time may be determined during the design or manufacturing process of the product.

[0163] Additionally, according to one embodiment of the present disclosure, the second reference time can be determined based on user input.

[0164] Additionally, according to one embodiment of the present disclosure, at least one of the first reference time, the third reference time, the fourth reference time, or the fifth reference time may be set to a default value. Additionally, according to one embodiment of the present disclosure, at least one of the first reference time, the third reference time, the fourth reference time, or the fifth reference time may be set based on a user input.

[0165] FIG. 11 is a diagram illustrating an air conditioner, an external device, and a server according to one embodiment of the present disclosure.

[0166] According to one embodiment of the present disclosure, the air conditioner (100) communicates with an external device (1110) and a server (1120) through a communication module (not shown). The air conditioner (100) may be connected to another home appliance, an external device (1110), or a server (1120) through a network (NET).

[0167] The server (1120) can manage user account information and information about the air conditioner (100) connected to the user account. For example, a user can access the server (1120) via an external device (1110) and create a user account. The user account can be identified by an ID and password set by the user. The server (1120) can register the air conditioner (100) to the user account according to a set procedure. For example, the server (1120) can register the air conditioner (100) by connecting identification information (e.g., serial number or MAC address) of the air conditioner (100) to the user account.

[0168] The external device (1110) may include a communication module capable of communicating with the air conditioner (100) and the server (1120), a user interface for receiving user input or outputting information to the user, at least one processor for controlling the operation of the external device (1110), and at least one memory storing a program for controlling the operation of the external device (1110).

[0169] The external device (1110) may be carried by the user or placed in the user's home or office, etc. The external device (1110) may include, but is not limited to, a personal computer, a terminal, a portable telephone, a smart phone, a handheld device, a wearable device, etc., for example.

[0170] A program (e.g., an application) for controlling the air conditioner (100) may be stored in the memory of the external device (1110). The external device (1110) may be sold with the application for controlling the air conditioner (100) installed, or may be sold without the application installed. If the external device (1110) is sold without the application for controlling the air conditioner (100) installed, the user may download the application from an external server providing the application and install it on the external device (1110).

[0171] A user can control an air conditioner (100) using an application installed in an external device (1110). For example, when a user executes an application installed in an external device (1110), identification information of an air conditioner (100) connected to the same user account as the external device (1110) may appear in an application execution window. The user can perform desired control of the air conditioner (100) through the application execution window. When a user inputs a control command for the air conditioner (100) through the application execution window, the external device (1110) may transmit the control command directly to the air conditioner (100) through a network, or may transmit the control command to the air conditioner (100) via a server (1120).

[0172] The application of the external device (1110) can receive various user inputs for controlling the air conditioner (100). The application provides a GUI (Graphical User Interface) for receiving various user inputs and receives user inputs through the GUI. The external device (1110) communicates with the server (1120) and updates status information of the air conditioner (100) and provides it to the application. In addition, the external device (1110) communicates with the server (1120) and transmits user inputs received through the application to the air conditioner (100).

[0173] The application can receive a power-off signal or a shutdown reservation signal from the air conditioner (100). Furthermore, the application can receive a reservation setting signal and user input for setting a reservation end time. Furthermore, the application can receive a sleep mode setting signal and user input for setting a reservation end time. Furthermore, the application can receive user input for setting a noise reduction mode. Furthermore, the application can receive user input for setting an automatic drying function. Furthermore, the application can receive user input for setting a wind-free mode.

[0174] Additionally, the application may receive user input to set the activation or deactivation of the detection sensor (110). The application may provide a GUI for setting the activation or deactivation of the detection sensor (110), and may provide guidance that the detection sensor (110) may be temporarily activated to protect the product of the air conditioner (100) when the detection sensor (110) is deactivated.

[0175] A network (NET) can include both wired and wireless networks. Wired networks include cable networks or telephone networks, while wireless networks can include any network that transmits and receives signals via radio waves. Wired and wireless networks can be interconnected.

[0176] A network (NET) may include a wide area network (WAN) such as the Internet, a local area network (LAN) formed around an access point (AP), and a wireless personal area network (WPAN) that does not use an access point. Short-range wireless networks may include, but are not limited to, Bluetooth™ (IEEE 802.15.1), Zigbee (IEEE 802.15.4), Wi-Fi Direct, Near Field Communication (NFC), and Z-Wave.

[0177] An access point (AP) can connect a local area network (LAN) to which an air conditioner (100) and an external device (1110) are connected to a wide area network (WAN) to which a server (1120) is connected. The air conditioner (100) or an external device (1110) can be connected to a server (1130) via the wide area network (WAN).

[0178] The access point (AP) can communicate with the air conditioner (100) and external devices (1110) using wireless communication such as Wi-Fi (Wi-Fi™, IEEE 802.11), and can connect to a wide area network (WAN) using wired communication.

[0179] The air conditioner (100) can transmit information about its operation or status to the server (1120) via a network (NET). For example, the air conditioner (100) can transmit information about its operation or status to the server (1120) via Wi-Fi™ (IEEE 802.11) communication.

[0180] If the air conditioner (100) is not equipped with a Wi-Fi communication module, the air conditioner (100) can transmit information about its operation or status to the server (1120) through another home appliance having a Wi-Fi communication module. For example, if the air conditioner (100) transmits information about its operation or status to another home appliance through a short-range wireless network (e.g., BLE (Bluetooth Low Energy) communication), the other home appliance can transmit information about the operation or status of the air conditioner (100) to the server (1120). In addition, for example, if the air conditioner (100) is not equipped with a Wi-Fi communication module, the air conditioner (100) can be connected to a communication relay device by a wire and perform Wi-Fi communication and 485 communication through the communication relay device.

[0181] The air conditioner (100) may provide information regarding the operation or status of the air conditioner (100) to the server (1120) with prior approval from the user. Information transmission to the server (1120) may be performed when a request is received from the server (1120), when a specific event occurs in the air conditioner (100), or periodically or in real time.

[0182] When information on the operation or status is received from the air conditioner (100), the server (1120) can update information previously stored in relation to the air conditioner (100). The server (1120) can transmit information on the operation or status of the air conditioner (100) to an external device (1110) via a network (NET).

[0183] The server (1120) can transmit information regarding the operation or status of the air conditioner (100) to the external device (1110) when a request is received from the external device (1110). For example, when a user runs an application connected to the server (1120) on the external device (1110), the external device (1110) can request and receive information regarding the operation or status of the air conditioner (100) from the server (1120) through the application. When information regarding the operation or status is received from the air conditioner (100), the server (1120) can transmit information regarding the operation or status of the air conditioner (100) to the external device (1110) in real time. The server (1120) can also periodically transmit information regarding the operation or status of the air conditioner (100) to the external device (1110). The external device (1110) can transmit information about the operation or status of the air conditioner (100) to the user by displaying information about the operation or status of the air conditioner (100) in the application execution window.

[0184] The air conditioner (100) can obtain various information from the server (1120) and provide the obtained information to the user. In addition, the air conditioner (100) can receive a file for updating pre-installed software or data related to pre-installed software from the server (1120), and based on the received file, update the pre-installed software or data related to pre-installed software.

[0185] The air conditioner (100) can operate according to a control command received from the server (1120). For example, if the air conditioner (100) has obtained prior approval from a user to operate according to the control command of the server (1120) even without user input, the air conditioner (100) can operate according to the control command received from the server (1120). The control command received from the server (1120) may include, but is not limited to, a control command input by the user through an external device (1120) or a control command generated by the server (1120) based on preset conditions.

[0186] FIG. 12 is a diagram illustrating an operation of providing a notification message that the air conditioning operation of the air conditioner has been stopped in a second mode according to one embodiment of the present disclosure.

[0187] According to one embodiment of the present disclosure, when the air conditioner (100) performs an air conditioning operation in the second mode, and a condition for terminating the air conditioning operation is met, the air conditioning operation is stopped and the air conditioner (100) is automatically turned off (1210), a stop message (1230) indicating that the air conditioning operation has been stopped can be output through an external device (1110).

[0188] When the air conditioner (100) automatically turns off the air conditioner (100) in the second mode (1210), the air conditioner (100) transmits turn-off information to an external device (1110) in step 1220. According to one embodiment of the present disclosure, the air conditioner (100) can transmit turn-off information to the external device (1110) via a server (1120). According to one embodiment of the present disclosure, the air conditioner (100) can directly transmit turn-off information from the air conditioner (100) to the external device (1110) using short-range communication (e.g., Wi-Fi, WIFI Direct, BLE, Bluetooth, UWB, etc.).

[0189] When the external device (1110) receives turn-off information, it outputs a stop message (1230) indicating that the air conditioner (100) has been automatically turned off. The external device (1110) can output the stop message (1230) through an application for controlling the air conditioner (100).

[0190] According to one embodiment of the present disclosure, when a stop message is output through an external device (1110), the air conditioner (100) may not output information indicating that the air conditioner (100) has been automatically turned off. In the second mode, when the air conditioner (100) is automatically turned off, since it is determined that there is no person in the target space, the air conditioner (100) may output a stop message through a remote external device (1110) without outputting notification information.

[0191] FIG. 13 is a diagram illustrating a process for providing information on automatically shutting down an air conditioner in a second mode according to one embodiment of the present disclosure.

[0192] According to one embodiment of the present disclosure, when the air conditioner (100) is automatically turned off in the second mode, the air conditioner (100) can provide information that the air conditioner (100) has been automatically turned off through the user interface.

[0193] According to one embodiment of the present disclosure, the air conditioner (100) includes an output interface (1310) and can output information that the air conditioner (100) has been automatically turned off through the output interface (1310). The output interface (1310) can include, for example, a display or a speaker. According to one embodiment of the present disclosure, the air conditioner (100) can display a message that the air conditioner (100) has been automatically turned off for product protection through the output interface (1310). In addition, the air conditioner (100) can output a voice message that the air conditioner (100) has been automatically turned off for product protection through the output interface (1310).

[0194] According to one embodiment of the present disclosure, the air conditioner (100) can output information that the air conditioner (100) has been automatically turned off through a remote controller (1320). The remote controller (1320) can include, for example, a display or a speaker. According to one embodiment of the present disclosure, the air conditioner (100) can display a message that the air conditioner (100) has been automatically turned off through the remote controller (1320). In addition, the air conditioner (100) can output a voice message that the air conditioner (100) has been automatically turned off through the remote controller (1320).

[0195] According to one embodiment of the present disclosure, the air conditioner (100) can output information that the air conditioner (100) has been automatically turned off through an application of an external device (1110). According to one embodiment of the present disclosure, the air conditioner (100) can display a message that the air conditioner (100) has been automatically turned off through an application of an external device (1110). In addition, the air conditioner (100) can output a voice message that the air conditioner (100) has been automatically turned off through an application of an external device (1110).

[0196] A device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0197] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0198] According to one aspect of one embodiment of the present disclosure, an air conditioner is provided. The air conditioner (100) includes a detection sensor (110) that generates a sensor detection value related to an object within a target space. The air conditioner (100) also includes an air conditioning module (212) that performs an air conditioning operation. The air conditioner (100) also includes a memory (214) that stores at least one instruction. The air conditioner (100) also includes at least one processor (210). The at least one processor (210) sets a first mode for activating the detection sensor (110) or a second mode for deactivating the detection sensor (110) based on a user input by executing the at least one instruction, and when it is determined that no person exists in the target space for a first reference time based on a sensor detection value of the detection sensor (110) while performing the air conditioning operation in the first mode with the detection sensor (110) activated, the air conditioning operation of the air conditioning module (212) is stopped, and when a second reference time has elapsed from the start time of the air conditioning operation while performing the air conditioning operation in the second mode with the detection sensor (110) deactivated, the detection sensor (110) is activated, and when it is determined that no person exists in the air-conditioned area based on the sensor detection value, the air conditioning operation is stopped. The second reference time is a longer time than the first reference time.

[0199] According to one embodiment of the present disclosure, the air conditioner (100) further includes a temperature sensor (410) that measures the temperature of the target space. The at least one processor (210), by executing the at least one instruction, determines whether a temperature difference between a temperature measurement value of the temperature sensor (410) and a target temperature value of the air conditioning operation exceeds a temperature reference value when a third reference time has elapsed from the start time of the air conditioning operation while the detection sensor (110) is inactivated in the second mode, and activates the detection sensor (110) when the temperature difference exceeds the temperature reference value, and stops the air conditioning operation when it is determined that no person is present in the air-conditioned area based on the sensor detection value. The third reference time is a time shorter than the second reference time.

[0200] Additionally, according to one embodiment of the present disclosure, the first reference time may be less than 1 hour, and the second reference time may be 12 hours or more.

[0201] In addition, according to one embodiment of the present disclosure, the at least one processor (210) may, by executing the at least one instruction, determine whether a fourth reference time has elapsed from the time when a user input for controlling the air conditioner (100) was last received when a second reference time has elapsed from the time when the air conditioning operation is performed while the detection sensor (110) is deactivated in the second mode, and activate the detection sensor (110) when the fourth reference time has elapsed from the time when the user input was last received.

[0202] In addition, according to one embodiment of the present disclosure, the at least one processor (110) may, by executing the at least one instruction, perform a condensate removal operation after the air conditioning operation is stopped during the performance of the air conditioning operation in the second mode, and turn off the power of the air conditioner (100) after the condensate removal operation is performed.

[0203] Additionally, according to one embodiment of the present disclosure, the at least one processor (210) may adjust at least one of the first reference time or the second reference time based on a user input by executing the at least one instruction.

[0204] In addition, according to one embodiment of the present disclosure, the at least one processor (210) may store the user's usage history information of the air conditioner (100) in the memory by executing the at least one instruction, and determine the second reference time based on the user's longest usage time information obtained from the usage history information.

[0205] In addition, according to one embodiment of the present disclosure, the at least one processor (210) may store usage history information of an installation area where the air conditioner (100) is installed in the memory (214) by executing the at least one instruction, and determine the second reference time based on the usage history information of the installation area.

[0206] In addition, according to one embodiment of the present disclosure, the air conditioner (100) further includes a communication module (620), and the at least one processor (210) can transmit a stop message indicating that the air conditioning operation has been stopped to at least one external device through the communication module (620) when the air conditioning operation is stopped in the second mode by executing the at least one instruction.

[0207] Additionally, according to one embodiment of the present disclosure, when the interruption message is transmitted to the at least one external device, the air conditioner may not output the interruption message.

[0208] In addition, according to one aspect of one embodiment of the present disclosure, a method for controlling an air conditioner is provided. The method for controlling an air conditioner includes a step of performing an air conditioning operation. In addition, the method for controlling an air conditioner includes a step of setting a first mode for activating a detection sensor or a second mode for deactivating the detection sensor based on a user input. In addition, the method for controlling an air conditioner includes a step of stopping the air conditioning operation when it is determined that no person is present in the target space for a first reference time based on a sensor detection value of the detection sensor while performing the air conditioning operation in a state in which the detection sensor is activated in the first mode. In addition, the method for controlling an air conditioner includes a step of activating the detection sensor when a second reference time has elapsed from the start time of the air conditioning operation while performing the air conditioning operation in a state in which the detection sensor is deactivated in the second mode; and a step of stopping the air conditioning operation when it is determined that no person is present in the air-conditioned area based on the sensor detection value. The second reference time is a longer time than the first reference time.

[0209] According to one embodiment of the present disclosure, in the second mode, when a third reference time has elapsed from the start time of the air conditioning operation while the detection sensor is inactivated, the method further includes: determining whether a temperature difference between a temperature measurement value of a temperature sensor and a target temperature value of the air conditioning operation exceeds a temperature reference value; activating the detection sensor when the temperature difference exceeds the temperature reference value; and stopping the air conditioning operation when it is determined that no person is present in the air-conditioning area based on the sensor detection value, wherein the third reference time may be a time shorter than the second reference time.

[0210] Additionally, according to one embodiment of the present disclosure, the first reference time may be less than 1 hour, and the second reference time may be 12 hours or more.

[0211] In addition, according to one embodiment of the present disclosure, when a second reference time has elapsed from the start time of the air conditioning operation while the detection sensor is deactivated in the second mode, the method may further include: a step of determining whether a fourth reference time has elapsed from the last time a user input for controlling the air conditioner was received; and a step of activating the detection sensor when the fourth reference time has elapsed from the last time the user input was received.

[0212] In addition, according to one embodiment of the present disclosure, when the air conditioning operation is stopped in the second mode, the method may further include a step of performing a condensate removal operation after stopping the air conditioning operation; and a step of turning off the power of the air conditioner after performing the condensate removal operation.

[0213] Additionally, according to one embodiment of the present disclosure, the method may further include a step of adjusting at least one of the first reference time or the second reference time based on a user input.

[0214] In addition, according to one embodiment of the present disclosure, the air conditioner control method may further include the step of storing usage history information of a user of the air conditioner in the memory; and the step of determining the second reference time based on the longest usage time information of the user obtained from the usage history information.

[0215] In addition, according to one embodiment of the present disclosure, the air conditioner control method further includes the step of storing usage history information of an installation area where the air conditioner is installed in the memory; and the step of determining the second reference time based on the usage history information of the installation area.

[0216] Additionally, according to one embodiment of the present disclosure, the air conditioner control method further includes a step of transmitting a stop message indicating that the air conditioning operation has been stopped to at least one external device when the air conditioning operation is stopped in the second mode.

[0217] In addition, according to one aspect of one embodiment of the present disclosure, a computer-readable recording medium having recorded thereon a program for performing an air conditioner control method on a computer is provided.

Claims

1. A detection sensor (110) that generates a sensor detection value related to an object within a target space; An air conditioning module (212) that performs air conditioning operations; A memory (214) storing at least one instruction; and comprising at least one processor (210), The at least one processor (210) executes the at least one instruction, Based on the user input, a first mode for activating the detection sensor (110) or a second mode for deactivating the detection sensor (110) is set, In the above first mode, when the air conditioning operation is performed with the detection sensor (110) activated, if it is determined that no person exists in the target space for a first reference time based on the sensor detection value of the detection sensor (110), the air conditioning operation of the air conditioning module (212) is stopped, In the second mode, if the second reference time has elapsed from the start time of the air conditioning operation while the detection sensor (110) is deactivated, the detection sensor (110) is activated, and if it is determined that no person is present in the air conditioning area based on the sensor detection value, the air conditioning operation is stopped. An air conditioner (100), wherein the second reference time is longer than the first reference time.

2. In paragraph 1, The above air conditioner (100) further includes a temperature sensor (410) that measures the temperature of the target space, The at least one processor (210) executes the at least one instruction, In the second mode, if a third reference time has elapsed from the start time of the air conditioning operation while the detection sensor (110) is inactive, it is determined whether the temperature difference between the temperature measurement value of the temperature sensor (410) and the target temperature value of the air conditioning operation exceeds the temperature reference value, and if the temperature difference exceeds the temperature reference value, the detection sensor (110) is activated, and if it is determined that no person is present in the air conditioning area based on the sensor detection value, the air conditioning operation is stopped. An air conditioner (100) wherein the third reference time is shorter than the second reference time.

3. In any one of paragraphs 1 and 2, An air conditioner (100) wherein the first reference time is within 1 hour and the second reference time is 12 hours or more.

4. In any one of paragraphs 1 to 3, The at least one processor (210), by executing the at least one instruction, determines whether a fourth reference time has elapsed from the time when a user input for controlling the air conditioner (100) was last received if a second reference time has elapsed from the start time of the air conditioning operation while the detection sensor (110) is deactivated in the second mode, and activates the detection sensor (110) if the fourth reference time has elapsed from the time when the user input was last received.

5. In any one of paragraphs 1 to 4, An air conditioner (100) in which the at least one processor (110) performs a condensate removal operation after the air conditioning operation is stopped during the air conditioning operation in the second mode by executing the at least one instruction, and turns off the power of the air conditioner (100) after the condensate removal operation is performed.

6. In any one of paragraphs 1 to 5, An air conditioner (100), wherein the at least one processor (210) controls at least one of the first reference time or the second reference time based on a user input by executing the at least one instruction.

7. In any one of paragraphs 1 to 6, An air conditioner (100), wherein the at least one processor (210) executes the at least one instruction to store the user's usage history information of the air conditioner (100) in the memory, and determine the second reference time based on the user's longest usage time information obtained from the usage history information.

8. In any one of paragraphs 1 to 7, The at least one processor (210) executes the at least one instruction, An air conditioner (100) that stores usage history information of an installation area where the air conditioner (100) is installed in the memory (214) and determines the second reference time based on the usage history information of the installation area.

9. In any one of paragraphs 1 to 8, The above air conditioner (100) further includes a communication module (620), An air conditioner (100) in which the at least one processor (210) transmits a stop message indicating that the air conditioning operation has been stopped to at least one external device through the communication module (620) when the air conditioning operation has been stopped in the second mode by executing the at least one instruction.

10. In paragraph 9, An air conditioner (100) in which the air conditioner does not output the stop message when transmitting the above-mentioned stop message to at least one external device.

11. Step of performing air conditioning operation; A step of setting a first mode for activating the detection sensor or a second mode for deactivating the detection sensor based on a user input; A step of stopping the air conditioning operation when it is determined that no person exists within the target space for a first reference time based on a sensor detection value of the detection sensor while performing the air conditioning operation with the detection sensor activated in the first mode; If the second reference time has elapsed from the start time of the air conditioning operation while the detection sensor is deactivated in the second mode, a step of activating the above detection sensor; and Including a step of stopping the air conditioning operation when it is determined that no person is present within the air conditioning area based on the sensor detection value, An air conditioner control method, wherein the second reference time is longer than the first reference time.

12. In paragraph 11, If a third reference time has elapsed from the start time of the air conditioning operation while the detection sensor is deactivated in the second mode, A step of determining whether a temperature difference between a temperature measurement value of a temperature sensor and a target temperature value of the air conditioning operation exceeds a temperature reference value; a step of activating the detection sensor when the temperature difference exceeds the temperature reference value; and Further comprising a step of stopping the air conditioning operation when it is determined that no person is present within the air conditioning area based on the sensor detection value, An air conditioner control method, wherein the third reference time is shorter than the second reference time.

13. In any one of paragraphs 11 to 12, An air conditioner control method, wherein the first reference time is within 1 hour and the second reference time is 12 hours or more.

14. In any one of paragraphs 11 to 13, If the second reference time has elapsed from the start time of the air conditioning operation while the detection sensor is deactivated in the second mode, A step of determining whether a fourth reference time has elapsed since the last time a user input for controlling the air conditioner was received; and An air conditioner control method further comprising the step of activating the detection sensor when the fourth reference time has elapsed from the time when the user input was last received.

15. A computer-readable recording medium having recorded thereon a program for performing the method of any one of claims 11 to 14 on a computer.

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