Automatic control system and method for air conditioner for energy saving and temperature deviation control

Abstract

The dual control system for heating and cooling can regulate the temperature of a target space. After receiving a temperature range input by the administrator, the system can receive user-set temperatures within that range. By recognizing the status of the target space in real time and determining whether to adjust the temperature, the dual control system can prevent the waste of electricity required for heating and cooling. The system can determine whether to operate heating and cooling based on whether a person is present in the target space. By recognizing the temperature of the target space and comparing it with a set target temperature, the system can determine whether temperature adjustment is necessary. Therefore, by operating in a way that prevents unnecessary heating and cooling in the target space, the dual control system can reduce the electricity consumed for heating and cooling.

Description

Technology Field

[0001] The present invention relates to an automatic control system and method for a heating and cooling unit for energy saving and temperature deviation control. More specifically, the invention discloses a system and method capable of controlling the operation of a heating and cooling unit through a dual temperature control device and a sensing device for energy saving and temperature deviation control. Background Technology

[0002] A heating and cooling system refers to a device that maintains a specific space at a warm or cool temperature without being affected by the external environment. By maintaining a space at an appropriate temperature, such systems create an environment suitable for human activity, thereby increasing work efficiency and preventing the onset of disease. The optimal indoor temperature for human activity is 25–29°C in summer and 18–21°C in winter. However, maintaining these optimal temperatures is difficult because heating and cooling systems are operated by humans. This is because each person has a preferred temperature, and those entering an indoor space after exposure to the outside environment tend to prefer lower or higher temperatures. Such low or high temperatures can result in unnecessary electricity costs and may cause illness in individuals sensitive to changes in body temperature. The method of having a central control unit and allowing a manager to control the system regardless of user operation presents a problem.

[0003] Unlike central heating and cooling systems in large buildings, packaged heating and cooling units are operated in areas that cannot be served by central heating and cooling systems, or in areas that need to be supplied outside of the central service hours. Additionally, nowadays, many large buildings install packaged heating and cooling units in individual rooms to reduce management costs. Regarding the operation of these units, public buildings managed by government agencies, such as those run by public officials, are operated in accordance with government-recommended temperatures, which are mandated by law or regulations to cool to 28 degrees or higher in the summer and to heat to 18 degrees or lower in the winter.

[0004] Furthermore, even in non-public buildings, there is a discrepancy between the temperatures desired by managers and those desired by users. Particularly regarding the socially controversial issue of installing air conditioners in guard posts at apartment complexes, the heating and cooling temperatures in these posts are set to levels unimaginable in residential homes, leading to social conflict over the installation and operation of these systems in relation to installation costs and electricity bills. This is because there is a significant gap between the temperatures desired by managers and those actually used by users, and the heating and cooling systems used by users are not being properly managed.

[0005] Furthermore, since heating and cooling systems are operated directly by humans, there are situations where the system operates unintended by the user. For instance, this occurs when a user is too busy with work to pay attention to the system's operation or accidentally enters incorrect settings, causing the system to continue running. If the system operates indiscriminately when the user does not want it, unwanted power loss may occur. To prevent such power loss, there is a need for heating and cooling systems and methods that operate automatically based on ambient temperature or the presence of people in a specific space.

[0006] In this regard, Korean Registered Patent Publication No. 10-0036876 discloses a control module for a heating and cooling system and a method for controlling the same. The above method invention introduces a method of controlling a heating and cooling system so that, when the temperature set in the control module of the heating and cooling system changes, it returns to the temperature set in the control module after a predetermined period of time has elapsed. Furthermore, the above method invention relates to an invention that regulates the temperature of an indoor space by forcibly circulating indoor air by forcibly blowing air when a difference occurs between the ceiling temperature and the floor temperature, even when operating a hot air blower.

[0007] The aforementioned background technology is one that the inventor possessed or acquired during the process of deriving the present invention, and it cannot be considered as publicly known technology disclosed to the general public prior to the filing of the present invention. The problem to be solved

[0008] The purpose of the embodiment is to provide a system that controls a heating and cooling unit according to a set value entered by an administrator using a temperature control unit.

[0009] The purpose of the embodiment is to provide a system that regulates the power supply of a power management unit based on detection information detected by a motion sensor and a temperature sensor. means of solving the problem

[0010] A dual control system for energy saving and temperature deviation control according to an embodiment may include a heating and cooling device installed within a target space and controlling a set temperature of the target space, comprising a plurality of user input units for inputting the set temperature by a user and a plurality of manager input units for setting a manager temperature range, and a power management unit capable of selectively supplying power to the heating and cooling device.

[0011] The above heating and cooling device may include a temperature control unit that controls the operation of the heating and cooling device according to the set temperature only when the set temperature set by the user input unit is located within the manager temperature range.

[0012] The above-mentioned manager input unit can receive the manager temperature range by setting the upper and lower fluctuation range based on the manager setting temperature received by the manager.

[0013] The power management unit described above includes a motion detection unit that detects whether a person is present in the target space and a temperature detection unit that detects the temperature in the target space, and can determine whether to supply power based on the information detected by the motion detection unit and the temperature detection unit.

[0014] The motion detection unit can cut off the power supply to the heating and cooling device if it determines that there is no person in the target space.

[0015] The motion detection unit can determine that a person is absent from the target space if no motion is detected within the target space for a set period of time.

[0016] The temperature sensing unit compares the detected temperature with a set temperature range, and if it is determined that the detected temperature is located within the set temperature range, it can cut off the power supply to the heating and cooling device.

[0017] The power management unit sets a first condition regarding whether a person exists within the target space and a second condition regarding whether the temperature of the target space falls below a set temperature range, and can supply power to the heating and cooling device only when the first and second conditions are simultaneously satisfied.

[0018] In a dual control method for a heating and cooling unit that controls the temperature of a target space, the dual control method for a heating and cooling unit may include a temperature setting step in which a set temperature range for a target temperature of the target space is set, a temperature control step in which the operation of the heating and cooling unit is controlled according to the set temperature range to control the temperature of the target space, and a power supply step in which power supply to the heating and cooling unit is determined based on set conditions.

[0019] The above temperature setting step may include a manager temperature range setting step in which a manager temperature range is set by a manager, a user temperature setting comparison step in which a set temperature value entered by a user is compared with the manager temperature range, and a temperature range setting step in which, if the entered temperature value is determined to be within the manager temperature range, the set temperature range is set using the entered temperature value.

[0020] The power supply step may include a motion detection step for determining whether there is a person in the target space and a temperature detection step for determining whether the temperature in the target space has reached the set temperature, and may include a decision step for determining whether to supply power to the heating and cooling unit based on the determination information of the motion detection step and the temperature detection step.

[0021] The above decision step may decide to cut off the power supply to the heating and cooling unit if there is no person in the target space or if the temperature of the target space reaches within the set temperature range. Effects of the invention

[0022] The dual control system for heating and cooling for energy saving and temperature deviation control according to the embodiment allows the administrator to control the heating and cooling unit after inputting a set value using a temperature control unit, thereby complying with the operating temperature standards provided by the government and the headquarters and maintaining an appropriate temperature accordingly.

[0023] The dual control system for a heating and cooling unit according to the embodiment can prevent power loss by operating the heating and cooling unit only when necessary, by regulating the power supply through a motion sensor and a temperature sensor that detect human movement and ambient temperature. Brief explanation of the drawing

[0024] FIG. 1 is a diagram showing the usage state of a dual control system for heating and cooling for energy saving and temperature deviation control according to an embodiment. FIG. 2 is a schematic diagram of a dual control system for heating and cooling according to an embodiment. FIG. 3 is a block diagram of a heating and cooling device according to an embodiment. FIG. 4 is a block diagram of a power management unit according to an embodiment. FIG. 5 is a diagram showing the usage state of the motion detection unit according to an embodiment. FIG. 6 is a diagram showing the usage state of the temperature sensing unit according to an embodiment. FIG. 7 is a flowchart of a dual control method for a heating and cooling system according to an embodiment. FIG. 8 is a flowchart of the temperature setting step according to an embodiment. FIG. 9 is a flowchart of the power supply steps according to an embodiment. Specific details for implementing the invention

[0025] Embodiments are described in detail below with reference to exemplary drawings. It should be noted that when assigning reference numerals to the components of each drawing, the same components are assigned the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments, if it is determined that a detailed description of related known configurations or functions would hinder understanding of the embodiments, such detailed description is omitted.

[0026] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments. These terms are intended only to distinguish the components from other components, and the nature, order, or sequence of the components is not limited by the terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0027] Components included in any one embodiment and components having common functions shall be described using the same names in other embodiments. Unless otherwise stated, the description in any one embodiment may also apply to other embodiments, and specific descriptions shall be omitted to the extent of overlap.

[0028] FIG. 1 is a diagram showing the usage state of a dual control system for heating and cooling for energy saving and temperature deviation control according to an embodiment, FIG. 2 is a schematic diagram of a dual control system for heating and cooling according to an embodiment, FIG. 3 is a block diagram of a heating and cooling device according to an embodiment, FIG. 4 is a block diagram of a power management unit according to an embodiment, FIG. 5 is a diagram showing the usage state of a motion detection unit according to an embodiment, and FIG. 6 is a diagram showing the usage state of a temperature detection unit according to an embodiment.

[0029] Referring to FIG. 1, the dual control system (1) for heating and cooling according to the embodiment can be installed in a specific space, for example, an indoor space such as an office. Hereinafter, the space where the dual control system (1) for heating and cooling is installed will be referred to as the 'target space (R)'.

[0030] Referring to FIGS. 1 to 6, the dual control system for heating and cooling (1) can control the temperature of a target space (R). The dual control system for heating and cooling (1) can prevent waste of power required for heating and cooling the target space (R) by recognizing the state of the target space (R) in real time and determining whether to control the temperature. For example, the dual control system for heating and cooling (1) can determine whether to operate heating and cooling based on whether a person is present in the target space (R). The dual control system for heating and cooling (1) can determine whether temperature control is required within the target space (R) by recognizing the temperature of the target space (R) and comparing it with a set target temperature. Therefore, the dual control system for heating and cooling (1) can reduce power required for heating and cooling by operating in such a way that unnecessary heating and cooling is not performed in the target space (R). The dual control system for heating and cooling (1) according to the embodiment may include a heating and cooling device (10) and a power management unit (11).

[0031] A heating and cooling device (10) is installed within a target space (R) and can control the temperature of the target space (R). The heating and cooling device (10) may include a heat exchanger (100), a plurality of user input units (102), a plurality of administrator input units (103), and a temperature control unit (101).

[0032] The heat exchanger (100) can perform heat exchange between the target space (R) and the external space where the cooling and heating device (10) performs cooling and heating functions. For example, in the case of a cooling device, the heat exchanger (100) can inhale a refrigerant in a gaseous state at room temperature, compress it to high pressure, and then turn the compressed fluid into a high-temperature, high-pressure gaseous state. Next, the heat exchanger (100) can condense the high-temperature, high-pressure gas into a liquid state to create a refrigerant in a low-temperature state. Finally, the heat exchanger (100) can turn the refrigerant in a low-temperature state into a refrigerant in a low-pressure state to create a gas that absorbs heat from the surroundings. As a result, the heat exchanger (100) can lower the temperature of the target space (R) as the low-temperature, low-pressure gas absorbs heat from the surroundings, and can maintain the temperature of the target space (R) at an appropriate temperature.

[0033] The user input unit (102) can receive a temperature set by the user. The user input unit (102) can receive inputs such as the set temperature, wind speed, wind direction, and sleep timer time required for the user to use the heating and cooling device (10). The user input unit (102) can be connected to a controller that sends a remote operation command signal. The controller can be manufactured in a portable form. The controller receives input values ​​based on the user's operation and can transmit the received input values ​​to the user input unit.

[0034] The administrator input section (103) can receive an administrator-set temperature value by an administrator. An administrator refers to a person who, unlike a user, can centrally control the heating and cooling system and set the absolute temperature of the heating and cooling device. An administrator-set temperature value refers to a temperature value set by an administrator according to the indoor temperature specified in the regulations on the promotion of energy use rationalization in public institutions and the company's internal rules.

[0035] The administrator input section (103) can receive not only the administrator-set temperature but also a temperature range that serves as a standard for the operation of the heating and cooling device (10). Specifically, the administrator input section (103) can receive the administrator-set temperature set by the administrator and can additionally receive an error range based on the administrator-set temperature. The administrator input section (103) can receive the administrator temperature range including the administrator-set temperature and the error range. At this time, the error range can be set in various ways, such as 0.5 degrees or 2 degrees.

[0036] The manager input unit (103) can send the received manager temperature range information to the temperature control unit (101), and as a result, the power management unit (11) can determine whether to supply power to the heating and cooling device (10) based on the received manager temperature range information. For example, if the manager sets the manager temperature to 2827 degrees and sets the upper and lower fluctuation range to 1 degree with an error range in the manager input unit (103), the manager temperature range is set from 2726 degrees to 2928 degrees. In the case of the air conditioner, when the indoor space temperature gradually decreases from a high temperature to 2726 degrees, the power supply from the power management unit (11) is cut off, and when the temperature rises again and exceeds 2928 degrees, power is supplied and the air conditioner can operate. This is because if the operation is repeated such that the power supply to the power management unit (11) is cut off when the set temperature is entered as 28 degrees and then power is supplied when the temperature reaches 28 degrees, the power management unit (11) may be repeatedly shut down, resulting in inefficient operation.

[0037] More specifically, if the administrator input unit (103) receives an administrator-set temperature of 28 degrees and an error range of 1 degree for the upper and lower fluctuation range, automatic operation may be possible in which the air conditioner continuously cools from an initial temperature of 30 degrees down to 27 degrees, stops cooling, and then cools again when the temperature reaches 29 degrees. Conversely, when operating a heater during the winter season, if the administrator input unit (103) receives an administrator-set temperature of 28 degrees and an error range of 1 degree for the upper and lower fluctuation range, automatic operation may be possible in which the heater continuously heats from an initial temperature of 15 degrees down to 19 degrees, stops heating, and then cools again when the temperature drops to 17 degrees.

[0038] The administrator input section (103) may include a remote control section for the administrator and a dual temperature control section.

[0039] The remote control unit for the administrator is manufactured in a portable form and receives the setting value of the heating and cooling device set by the administrator, and can remotely send the input setting value as a signal to the heating and cooling device (10). For example, the remote controller for the administrator of the heating and cooling device (10) emits infrared rays using a light-emitting diode (LED), and the emitted infrared rays can serve as a command signal to the heating and cooling device. As the frequency of the emitted infrared rays changes according to the setting value received by the remote controller for the administrator, the remote controller for the administrator can remotely send a signal to the heating and cooling device (10).

[0040] The dual temperature control unit can be installed on the inner wall of the target space (R), separated from the heating and cooling device (10) and the remote control unit. The dual temperature control unit can control the set temperature of the heating and cooling device (10) independently of the remote control unit. For example, a dual temperature control box in which the dual temperature control unit is installed is installed on the inner wall of the target space (R), and the dual temperature control unit can receive temperature values ​​set by an administrator directly pressing a button and transmit the input information to the heating and cooling device (10).

[0041] The dual temperature control unit may display the set temperature so that a user can check the set temperature from the outside. For example, the dual temperature control unit is installed on the inner wall of the target space (R), and a display device is installed on the outer surface of the dual temperature control unit to display the temperature set on the dual temperature control unit, so that people passing by can check the dual temperature control unit.

[0042] The dual temperature control unit may include a dual temperature remote control unit that has the same function as the remote control unit. The dual temperature remote control unit receives a setting value of the heating and cooling device (10) set by the administrator and can remotely send the input setting value as a signal to the dual temperature control unit.

[0043] The temperature control unit (101) can control the operation of the heat exchange unit (100) so that the temperature of the target space (R) reaches a set temperature. The temperature control unit (101) can control the operation of the heat exchange unit (100) according to the manager's set temperature only when the set temperature received by the user through the user input unit (102) is located within the temperature range set by the manager. For example, if the manager sets the temperature range from 2723.5 degrees to 2926.5 degrees with a set temperature of 2825 degrees and an error range of 11.5 degrees, the user can operate the temperature of the heating and cooling device (10) only within the temperature range of 2723.5 degrees to 2926.5 degrees. Specifically, when the temperature range is set from 2723.5 degrees to 2926.5 degrees, if the user sets a temperature value outside the temperature range, the temperature control unit (101) does not accept the user's setting command, but if the user sets a temperature value within the temperature range, the temperature control unit (101) can change the set temperature according to that setting value.

[0044] The power management unit (11) can selectively supply power to the heating and cooling device (10). In other words, the power management unit (11) can turn the power of the heating and cooling device (10) on / off by supplying or cutting off power. The power management unit (11) can detect the state of the target space (R) and determine whether to supply power to the heating and cooling device (10) based on the detected information. The power management unit (11) can determine the operation of the heating and cooling device (10) based on, for example, whether there is a person in the target space (R) or whether the temperature of the target space (R) is within a set range. The power management unit (11) may include a motion detection unit (110), a temperature detection unit (111), and a power unit (112).

[0045] The motion detection unit (110) can detect whether a person is present in the target space (R). The motion detection unit (110) can detect the movement of a person in the target space (R) using electromagnetic waves. For example, the motion detection unit (110) may use infrared light, and the motion detection unit (110) may include a light receiving unit that receives light of a certain frequency and a light emitting unit that emits light. Infrared light generated from the light emitting unit strikes the body of a person moving in the target space (R) and is reflected, and the light receiving unit detects the amount of change in this reflected light, thereby the motion detection unit (110) can detect the movement of a person and determine whether a person is present.

[0046] The motion detection unit (110) may include a timer unit that measures the elapsed time from the point in time when no human movement is detected within the target space (R). The timer unit may start measuring time from the point in time when the detection sensor within the motion detection unit (110) does not detect human movement, and then perform a reset procedure to start the time-measuring operation from the beginning again when human movement is detected. The timer unit may receive an elapsed time set by the administrator. The timer unit may determine whether the elapsed time has elapsed by starting to measure time from the point in time when no human movement is detected. For example, if the timer unit receives an elapsed time set by the administrator as 5 minutes, the timer unit may start measuring 5 minutes from the point in time when it does not receive the electrical signal sent by the infrared sensor detecting human movement. If the timer unit receives a signal from the infrared sensor that human movement is detected before 5 minutes have elapsed, the time-measuring process is reset, and the elapsed time can be measured again from the point in time when the electrical signal is not received. The motion detection unit (110) can determine that there is no person in the target space (R) when the elapsed time of the timer unit set by the administrator has elapsed.

[0047] The temperature sensing unit (111) can detect the temperature within the target space (R). The temperature sensing unit (111) may be installed on the ceiling of the target space (R). The temperature sensing unit (111) may use a non-contact thermometer capable of measuring the air temperature around the temperature sensing unit (111). For example, the temperature sensing unit (111) may use an infrared thermometer. An infrared thermometer can collect light from the air within the target space (R) and leave only the light in the required wavelength range through a filter. An infrared thermometer can detect and measure the temperature of the surrounding air by measuring the emissivity generated by the light particles that pass through the filter.

[0048] The power unit (112) can selectively supply power to the heating and cooling device (10) based on information detected by the motion detection unit (110) and the temperature detection unit (111). If the motion detection unit (110) determines that there is no person in the target space (R), the power unit (112) can cut off the power supply to the heating and cooling device (10).

[0049] The power unit (112) can compare the temperature detected by the temperature detection unit (111) with a set manager-set temperature range. If it is determined that the detected temperature is within the manager-set temperature range, the power unit (112) can cut off the power supply to the heating and cooling device (10).

[0050] The temperature sensing unit (111) can compare the detected temperature with the temperature range set by the manager. If the temperature detected by the temperature sensing unit (111) is determined to be within the temperature range set by the manager, the power unit (112) can cut off the power supply to the heating and cooling device (10). For example, in the summer, if the heating and cooling device (10) receives a manager-set temperature of 28 degrees and an error range with an upper and lower fluctuation range of 1 degree, and the manager temperature range is set to 27 to 29 degrees, the power unit (112) initially supplies power to the heating and cooling device (10) at 30 degrees, but when the temperature of the target space (R) reaches 27 degrees, the power unit (112) can cut off the power supply to the heating and cooling device. Then, when the temperature of the target space (R) rises again and reaches 29 degrees, the power unit (113) can supply power to the heating and cooling device (10) to operate the heating and cooling device.

[0051] For example, if the heating and cooling device (10) receives a temperature range of 24 to 26 degrees with an administrator-set temperature of 25 degrees and an error range of 1 degree, the power unit (112) can stop the operation of the heating and cooling device (10) by cutting off the power supply to the heating and cooling device (10) when the ambient air temperature of the temperature sensor (111) is within the range of 24 to 26 degrees. That is, when the ambient air temperature deviates to 24 degrees or lower or 26 degrees or higher, the power unit (112) can supply power to the heating and cooling device (10) to operate the heating and cooling device (10).

[0052] The power unit (112) can receive operating conditions for the heating and cooling device for each of the motion detection unit (110) and the temperature detection unit (111). Based on the received operating conditions, the number of cases for supplying power to the heating and cooling device (10) can be divided according to whether each condition is satisfied. The power unit (112) can supply power to the heating and cooling device (10) according to each case.

[0053] Specifically, the power unit (112) can set a first condition regarding whether a person is present in the target space (R) and a second condition regarding whether the temperature of the target space is below a set temperature range. The power unit (112) can supply power to the heating and cooling device (10) only when the first condition and the second condition are simultaneously satisfied. For example, when an administrator sets the temperature range to 2725 degrees to 2927 degrees and the temperature detection unit (111) is operating and the motion detection unit (110) detecting whether there is human movement is operating, the motion detection unit (110) detects human movement in the target space (R) and the temperature detection unit (111) detects that the temperature of the indoor space has exceeded the temperature range of 25 degrees to 27 degrees, the power unit (112) can supply power to the heating and cooling device (10). When a temperature exceeding 27 degrees or 29 degrees is detected, the power unit (113) can supply power to the heating and cooling device (10).

[0054] Hereinafter, a dual control method (2) for a heating and cooling unit according to an embodiment will be described. In describing the dual control method (2) for a heating and cooling unit, content that overlaps with the descriptions previously explained will be omitted. Unless otherwise noted, expressions identical to those in the descriptions previously explained can be understood to mean the same configuration.

[0055] FIG. 7 is a flowchart of a dual control method for a heating and cooling unit according to an embodiment, FIG. 8 is a flowchart of a temperature setting step according to an embodiment, and FIG. 9 is a flowchart of a power supply step according to an embodiment.

[0056] Referring to FIGS. 7 to 9, the dual control method (2) for a heating and cooling unit may include a temperature setting step (20), a temperature control step (21), and a power supply step (22).

[0057] The temperature setting step (20) can set a set temperature range for the temperature of the target space (R). The temperature setting step (20) can set the temperature range of the heating and cooling device (10) by comparing and determining the manager-set temperature entered by the manager and the user-set temperature entered by the user. The temperature setting step (20) may include a manager temperature range setting step (200), a user-set temperature comparison step (201), and a temperature range setting step (202).

[0058] The administrator temperature range setting step (200) can set an administrator temperature range by the administrator. Specifically, the administrator temperature range setting step (200) can set an administrator temperature set by the administrator. The administrator temperature range setting step (200) can set an administrator temperature range by setting an error range by the administrator based on the set administrator temperature. The administrator temperature range setting step (200) can set a temperature range by sending a signal to the heating and cooling device (10) remotely using a remote control unit for the administrator. In addition, the administrator temperature range setting step (200) can adjust the set temperature of the heating and cooling device (10) separately from the remote control unit for the administrator by installing a dual temperature control box separately.

[0059] The user-set temperature comparison step (201) can compare the set temperature value entered by the user with the administrator temperature range. Specifically, first, the user-set temperature comparison step (201) can input a user-set temperature by the user. Next, the user-set temperature comparison step (201) can send a signal regarding the user-set temperature to the heating and cooling device (10) remotely through the user's remote control unit. The user-set temperature comparison step (201) can compare the user-set temperature received by the heating and cooling device (10) with the administrator temperature range received earlier.

[0060] The temperature range setting step (202) can set the temperature range of the heating and cooling device (10) using the input user temperature value when the input user temperature value is determined to be within the manager temperature range. For example, the temperature range setting step (202) can set the user temperature as the temperature of the heating and cooling device (10) only when the manager temperature range is input as 25 to 27 degrees with a manager temperature range of 26 degrees and an error range of 1 degree, and the user temperature is input later as the temperature of the heating and cooling device (10). Specifically, the temperature range setting step (202) is a manager temperature range of 25 to 27 degrees, but if the user-set temperature is a temperature outside the manager temperature range rather than within the temperature range, the received user-set temperature may not be applied. For example, in the case of cooling, if the manager temperature range setting step (202) receives an error range with a manager temperature of 28 degrees and an upper / lower fluctuation range of 1 degree, and the manager temperature range is set to 27 to 29 degrees, the temperature range setting step (202) can perform automatic operation by continuously cooling the target space (R) from an initial temperature of 30 degrees down to 27 degrees, stopping the cooling, and then reheating when the temperature rises back to 29 degrees.

[0061] In addition, the administrator-set temperature value received in the temperature range setting step (202) may serve as a standard for the operation of the heating and cooling unit (10) in priority over the user-set temperature value received by the user. That is, if the user-set temperature value received by the user is lower than the administrator-set temperature value during cooling, the administrator-set temperature value takes precedence and serves as the standard for the operation of the heating and cooling unit, and if the user-set temperature value is higher than the administrator-set temperature value, the user-set temperature value is applied and serves as the standard for the operation of the heating and cooling unit (10).

[0062] The temperature control step (21) can control the operation of the heating and cooling unit (10) according to the temperature range set in the temperature setting step (20) to control the temperature of the target space (R). Specifically, the temperature control step (21) can use a heat exchanger, a compressor, a condenser, and an evaporator to ensure that the temperature of the target space (R) reaches the set temperature. For example, in the case of a cooling unit, the temperature control step can draw in a refrigerant that is in a gaseous state at room temperature, compress it to high pressure, and then turn the compressed fluid into a high-temperature, high-pressure gaseous state. Then, the temperature control step can condense the high-temperature, high-pressure gas into a liquid state to create a refrigerant that is in a low-temperature state. Finally, the temperature control step can turn the refrigerant that is in a low-temperature state into a refrigerant that is in a low-pressure state, thereby creating a gas that absorbs heat from the surroundings. As a result, the temperature control step can lower the temperature of the indoor space as the low-temperature, low-pressure gas absorbs heat from the surroundings, and can maintain the temperature of the target space (R) at an appropriate temperature.

[0063] The power supply step (22) can determine the power supply to the heating and cooling device (10) based on the conditions set in the temperature setting step (21). The power supply step (22) may include a motion detection step (220), a temperature detection step (221), and a determination step (222).

[0064] The motion detection step (220) can detect and determine whether a person is absent within the target space. Specifically, the motion detection step (220) can detect whether a person is absent by using electromagnetic waves. The motion detection step (220) can detect whether a person is absent by using an infrared sensor, utilizing the property that infrared rays are emitted and then reflected back. The motion detection step (220) can use a timer to measure time from the point in time when a person is absent from the target space. For example, if the elapsed time is set to 5 minutes, the timer unit can start measuring 5 minutes from the point in time when it fails to receive the electrical signal sent by the infrared sensor detecting a person's movement. If the timer unit receives a signal from the infrared sensor that a person's movement is detected before 5 minutes have elapsed, the time measurement process is reset, and the elapsed time can be measured again from the point in time when the electrical signal is not received.

[0065] The temperature detection step (221) can determine whether the temperature within the target space has reached the temperature set in the temperature setting step (20). First, the temperature detection step (221) can measure the air temperature around the temperature detection device by installing a temperature detection device on the ceiling of the target space (R). A non-contact temperature device can be used as the temperature detection device. Next, the temperature detection step (221) can determine whether the set temperature has been reached by comparing the temperature set in the temperature setting step (20) with the temperature measured through the temperature detection device.

[0066] The decision step (222) can determine whether to supply power to the heating and cooling device (10) based on the judgment information detected in the motion detection step (220) and the temperature detection step (221). For example, using the information detected in the motion detection step (220) and the temperature detection step (221), the decision step (222) can set a first condition (P1) that determines whether there is human movement in the target space and a second condition (P2) that determines whether the temperature in the target space has deviated from the temperature range set by the manager. Specifically, the decision step (222) can supply power to the heating and cooling device (10) only when both the first condition (P1) that human movement is detected in the target space and the second condition (P2) that the temperature in the target space has deviated from the temperature range set by the manager are satisfied.

[0067] On the other hand, the decision step (222) may decide to cut off the power supply to the heating and cooling device (10) when there is no person in the target space or when the temperature of the target space reaches the manager temperature range set by the manager. For example, the decision step (222) may decide to cut off the power supply to the heating and cooling device (10) when at least one of the first condition (P1) that movement of a person is detected in the target space and the second condition (P2) that the temperature in the target space is determined to be outside the temperature range set by the manager is not met.

[0068] As a result, the dual control system (1) and the dual control method (2) can maintain the target space (R) at an appropriate temperature by controlling the heating and cooling device (10) according to the setting value entered by the manager. In addition, the dual control system (1) and the dual control method (2) can prevent power loss by operating the heating and cooling device according to situational conditions through the motion detection unit (110) and the temperature detection unit (110) measuring human movement and ambient temperature.

[0069] Although embodiments have been described with reference to limited drawings as described above, those skilled in the art can make various modifications and variations from the description above. For example, appropriate results can be achieved even if the described techniques are performed in a different order than described, and / or components such as the described structure or device are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents. Explanation of the symbols

[0070] 1: Dual control system for heating and cooling 10: Heating and cooling system 11: Power Management Department 100: Heat exchange section 101: Temperature control unit 102: User Input Section 103: Administrator Input Section 110: Motion detection unit 111: Temperature sensor 112: Power Department

Claims

Claim 1 A heating and cooling device installed within a target space and controlling a set temperature of the target space, comprising a plurality of user input units into which the set temperature is input by a user and a plurality of manager input units for setting a manager temperature range; a temperature control unit that controls the operation of the heating and cooling device according to the set temperature only when the set temperature set by the user input unit is located within the manager temperature range; and a power management unit capable of selectively supplying power to the heating and cooling device, wherein the power management unit includes a motion detection unit that detects whether a person is present within the target space; A heating and cooling device control system for energy saving and temperature deviation control, comprising: a temperature sensing unit for detecting temperature within the target space; a motion sensing unit including a timer unit that starts measuring time from the point when no human movement is detected within the target space and performs a reset procedure to restart the time measuring operation from the beginning when human movement is detected, wherein if no motion is detected within the target space for a set time set by an administrator, it is determined that a person is absent within the target space; the temperature sensing unit compares the detected temperature with a set temperature range, and if it is determined that the detected temperature is located within the set temperature range, cuts off the power supply to the heating and cooling device; the administrator input unit is manufactured in a portable form to receive a setting value of the heating and cooling device set by the administrator and remotely sends a signal to the heating and cooling device with the input setting value; and a dual temperature control unit installed on the inner wall of the target space and controlling the setting temperature of the heating and cooling device separately from the remote control unit.

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