JPH04320748A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To provide a control device for an air conditioner capable of performing an air conditioning an entire room without any irregular conditioning and capable of controlling a room temperature, an air direction and an air speed in response to an activity circumstance of a user. CONSTITUTION:A radiation temperature sensing means comprised of a human body sensing means 1 and an object sensing means 2 detects an infrared ray radiated from a human body, detects a position of presence and temperature of the human body, senses infrared rays radiated from a wall, a ceiling or a floor surface and the like and senses temperature of the object. A set temperature calculation means 7a receives a sensed output from a radiation temperature sensing means, calculates a set temperature and a set temperature changing means 8a receiving this result of calculation changes the set temperature. An air blowing speed calculation means 7b receives a sensing output from the radiation temperature sensing means, calculates an air blowing speed and the air blowing speed changing means 8b receiving the result of this calculation changes the air speed. An air blowing direction calculation means 7c receives a sensing output from the radiation temperature sensing means, calculates an air blowing direction and the air blowing direction changing means 7c receiving the result of this calculation changes an air blowing direction.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to a control device for an air conditioner that changes the set temperature, air blowing speed, and air blowing direction according to the position and temperature of the user and the temperature of objects such as walls, ceilings, or floors. The present invention also relates to a control device for an air conditioner equipped with a human position detection sensor that accurately detects the user's position in order to accurately detect the user's temperature.

0002

[Prior Art] FIG. 7 shows, for example, Japanese Patent Application Laid-Open No. 1-167551.
This figure shows a conventional automatic temperature setting device for an air conditioner disclosed in the publication, and in FIG. 7, 3 is an indoor temperature sensor that detects the indoor temperature, and 4 is a sensor for inputting thermal sensations by the user. Input unit 16 is a person position detection means for detecting the person's position by detecting infrared rays radiated by the human body of the user;
7 is a body surface temperature sensor that detects the body surface temperature of the human body at the user's position, and 18 is a central processing calculation means (hereinafter referred to as CPU) that calculates the amount of change in the set temperature.

Reference numeral 19 denotes a memory, and 5 refers to the body surface temperature of the human body detected by the body surface temperature sensor 17, when the human position detected by the human position detecting means 16 changes, from before the change in the human position. A body surface temperature storage section 6 stores data between the indoor temperature sensor 3, the sensory input section 4, the input position detection means 16, the body surface temperature sensor 17, and the CPU 18. It is an interface for communication. 20 is an inverter section,
9a is a compressor.

Next, the operation of the automatic temperature setting device for an air conditioner constructed as described above will be explained. Data indicating the human position detected by the human position detection means 16, data indicating the user's body surface temperature detected by the body surface temperature sensor 17, and data indicating the indoor temperature from the indoor temperature sensor 3 are transmitted to the interface 6. is sent to the CPU 18 via. Furthermore, when the user inputs a thermal sensation from the sensory input section 4, the data input from the sensory input section 4 is sent to the CPU 18 via the interface 6. At the same time, C
Data indicating the user's body surface temperature detected by the body surface temperature sensor 17 before and after the user's position is moved from the PU 18 is stored in the body surface temperature storage unit 5.

The CPU 18 determines the user's body surface temperature based on data stored in the body surface temperature storage section 5 indicating the user's body surface temperature detected by the body surface temperature sensor 17 before and after the user's position has moved. The amount of change is calculated, the amount of change in the set temperature of the room temperature is calculated based on the amount of change in body surface temperature and the data indicating the indoor temperature from the indoor temperature sensor 3, and the set temperature of the room temperature is changed based on this amount of change in the set temperature. . This change in the set temperature of the room temperature is sent to the inverter unit 20 via the interface 6, and the inverter unit 20
Controls the compressor 9a based on the changed set temperature of the room temperature, that is, adjusts the temperature of the air blown from the air conditioner.

The operation of the automatic temperature setting device for an air conditioner constructed in this manner will be further explained with reference to the flowchart shown in FIG. First, in step 11, the person position detection means 16 detects infrared rays radiated from the user,
Data indicating the user's location is sent to the CPU 18 via the interface 6. In step 12, the CPU 18 checks whether the user's position has changed based on the data indicating the person's position from the person's position detecting means 16, and if it is determined that the user's position has changed, the process proceeds to step 13.

[0007] In step 13, it is checked whether a certain period of time has elapsed since it was determined that the position of the user had changed. If the predetermined time has not elapsed, the process of step 13 is repeated until the predetermined time has elapsed, and when the predetermined time has elapsed, the process proceeds to step 14. In this step 14, the body surface temperature sensor 17 detects the surface temperature of the user, and sends data indicating the user's surface temperature to the CP via the interface 6.
It is sent to U18 and also stored in the body surface temperature storage section 5.

In step 15, the CPU 18 determines the user's body surface temperature based on the data stored in the body surface temperature storage section 5 indicating the user's body surface temperature detected by the body surface temperature sensor 17 before and after the user's position has moved. Body surface temperature change△
TS is obtained, and the set temperature change amount ΔTSET of the room temperature is calculated based on the body surface temperature change amount ΔTS and the data indicating the indoor temperature from the indoor temperature sensor 3, and the process proceeds to step 16. In this step 16, this set temperature change amount △TSE
The set temperature of the room temperature is changed based on T. This change in the room temperature setting is sent to the inverter section 20 via the interface 6, and the inverter section 20 controls the compressor 9a based on the changed room temperature setting temperature.
This is to adjust the temperature of the air blown from the air conditioner.

In step 17, the CPU 18 compares the data indicating the indoor temperature from the indoor temperature sensor 3 with the changed set temperature of the room temperature, and compares the data indicating the indoor temperature from the indoor temperature sensor 3 with the changed room temperature. If the set temperature has not been reached, the process in step 17 is repeated until the changed set temperature of the room temperature is reached, and when the changed set temperature of the room temperature is reached, the process returns to step 11 and the above operations are repeated. . Note that in step 12, C
If the PU 18 determines that the user's position has not changed, the process proceeds to step 14 without proceeding to step 13.
The subsequent processing will be performed.

FIG. 9 shows, for example, a human position detection sensor used in a control device for an air conditioner disclosed in Japanese Patent Application Laid-Open No. 1-121646. In FIG. A human position detecting section 22 includes an infrared detecting means 21a for detecting infrared rays and a light receiving shaft driving means 21b for changing the direction of the infrared detecting means 21a. The amplifying section 23 is a comparing section having a comparator 23b that compares the detection signal from the infrared detecting means 21a amplified by the amplifying section 22 with the reference value from the reference value setting means 23a.

24 receives the comparison result from this comparison section,
If the detection signal from the infrared detection means 21a is determined to be from a human body, a signal instructing to change the wind direction in the direction in which the human body is detected is output, and the detection signal from the infrared detection means 21a is determined to be from a human body. If it is determined that the person position detection unit 21 is not
25 is a wind direction control means for changing the wind direction of the air conditioner in response to a signal from this microcomputer instructing to change the wind direction; 26 is a light receiving shaft drive from the microcomputer; In response to a signal for driving the means 21b, the light receiving axis driving means 21b is driven and the infrared detecting means 21 is activated.
This is a drive circuit for changing the direction of a.

Next, the operation of the human position detection sensor used in the air conditioner control device configured as shown in FIG. 9 will be explained. First, when the human position detection operation starts, the microcomputer 24 sends a signal to the drive circuit 26, and the drive circuit 26 drives the light receiving axis drive means 21b to change the direction of the infrared detection means 21a. Then, the signal detected by the infrared detection means 21a is amplified by the amplifier 22, and compared with the reference value from the reference value setting means 23a by the comparator 23b. Based on the comparison result from the comparator 23b, the microcomputer 24 determines whether the detection signal from the infrared detection means 21a is from a human body, and if it is not from a human body, sends a signal to the drive circuit 26, The same process is repeated by changing the direction of the infrared detecting means 21a.

When the microcomputer 24 determines that the detection signal from the infrared detection means 21a is from a human body, it sends a signal to the wind direction control means 25, and the wind direction control means 25 directs the air in the direction in which the user is detected. It controls the wind direction from the conditioner and completes the predetermined process. Then, after a predetermined period of time has elapsed after the above-mentioned predetermined processing is completed, the human position detection operation is started again, and the same operation as described above is repeated.

[0014]

However, in the conventional automatic temperature setting device for an air conditioner shown in FIG. Since the set temperature is only changed when the temperature changes, the air conditioner control cannot keep up with the user if the user moves frequently, and even if it could do so, the indoor temperature may vary widely. It was something like that. Also,
Since the set temperature is changed based on the difference in body surface temperature before and after the change in the user's position, it does not necessarily match the temperature sensation felt by the user, and it is not possible to precisely control the temperature. there were. Furthermore, the room temperature, wind direction, and wind speed remain constant unless the user sets them, making air conditioning boring for the user, and can also be uncomfortable as it remains constant regardless of the user's activity status. It was something.

Furthermore, in the human position detection sensor used in the conventional air conditioner control device shown in FIG. For example, walls exposed to the sun have high temperatures, windows are easily affected by temperature, and walls, ceilings, floors, etc. are affected by air conditioning. A problem arose in that it was not always possible to accurately determine a person's position due to the effects of susceptibility.

The present invention has been made in view of the above-mentioned points, and provides an air conditioner control device that can evenly air-condition the entire room and can control the room temperature, wind direction, and wind speed according to the user's activity status. The purpose is to obtain. A second object is to obtain a control device for an air conditioner that has a human position detection sensor that corrects the influence of the ambient temperature of the user, has high detection accuracy, and is stable.

[0017]

[Means for Solving the Problems] An air conditioner control device according to a first aspect of the present invention detects infrared rays radiated by a human body to detect the location and temperature of the human body, and also detects the location and temperature of the human body. A radiant temperature detection means that detects the temperature of an object by detecting infrared rays radiated by an object such as a floor surface, a set temperature calculation means that calculates a set temperature based on the detection output from the radiant temperature detection means, and a radiant temperature A blowing speed calculating means for calculating a blowing speed in response to a detection output from the detection means, a blowing direction calculating means for calculating a blowing direction in response to a detection output from the radiant temperature detecting means, and a calculation output from the set temperature calculating means. a set temperature changing means for changing the set temperature in response to a calculation result, a blowing speed changing means for changing the blowing speed in response to a calculated output from the blowing speed calculating means, and a blowing speed changing means for changing the blowing direction in response to a calculated output from the blowing direction calculating means. The air blowing direction is changed by means for changing the air blowing direction.

The air conditioner control device according to the second aspect of the present invention detects the temperature of the human body by detecting infrared rays radiated by the human body, and also detects the temperature of the human body by detecting infrared rays radiated by the human body. A radiant temperature detection means for detecting the temperature of the object by detecting infrared rays radiated by the object, and a detection output indicating the temperature of the human body from the radiant temperature detection means for comparing the detection output indicating the temperature of the human body with a reference value to identify the human body. The apparatus is provided with a discriminating means and a reference value changing means for receiving a detection output indicating the temperature of the object from the radiant temperature detecting means and changing a reference value inputted to the discriminating means.

[0019]

[Operation] In the first aspect of the present invention, the radiant temperature detecting means detects the position and temperature of the human body and also detects the temperature of the object, and the set temperature is calculated based on the detection output from the radiant temperature detecting means. The means and set temperature changing means change the set temperature, the blowing speed calculating means and the blowing speed changing means change the blowing speed, and the blowing direction calculating means and the blowing direction changing means change the blowing direction to change the position of the user and the blowing direction. Appropriate air conditioning will be performed depending on the activity situation.

In the second aspect of the present invention, the reference value changing means changes the reference value of the discriminating means by the detection output indicating the temperature of the object from the radiant temperature detecting means, while correcting it based on the surrounding environment. Detect the user's location.

[0021]

[Example] Example 1. Embodiment 1 of the present invention will be explained below based on FIGS. 1 to 4. In FIG.
The human body detection means detects the infrared rays radiated by the human body of the user to detect the position and surface temperature of the human body, and is composed of a thermopile type infrared sensor. 2 is an object temperature detection means that detects the surface temperature of objects by detecting infrared rays radiated by objects such as walls, ceilings, and floors surrounding the user, and uses a thermopile type infrared sensor as a radiation thermometer. The human body detection means 1 and the above-mentioned human body detection means 1 constitute a radiant temperature detection means.

[0022] Reference numeral 3 denotes an indoor temperature sensor which is installed at the suction port of the air conditioner and detects the indoor temperature, and is constituted by a thermostat or the like. 4 is the heat felt by the user;
a sensory input section for inputting thermal sensations such as cold, cold, comfortable, etc.; 5 is a body surface temperature storage section for storing detection outputs from the human body detection means 1 and the object temperature detection means 2;
When the human position changes, the detected body surface temperature of the human body is stored separately before and after the change in the human position.

Reference numeral 6 denotes the human body detection means 1, the object temperature detection means 2, the indoor temperature sensor 3, and the sensory input section 4.
An interface for exchanging data from, 7
The detection outputs from the human body detection means 1 and the object temperature detection means 2 and the information input by the sensory input section 4 are inputted via the interface 6, and the optimal room temperature setting, air blowing speed, and air blowing are determined. A set temperature calculating means 7a which calculates a direction and calculates a set temperature by receiving the detection output from the radiant temperature detecting means consisting of the human body detecting means 1 and the object temperature detecting means 2; A blowing speed calculation means 7b receives the detection output from the radiant temperature detection means and calculates the blowing speed, and a blowing direction calculation means 7c receives the detection output from the radiant temperature detection means and calculates the blowing direction.
It is composed of.

Reference numeral 8 denotes a changing means that receives the calculation results from the calculation means 7 via the interface 6 and changes the set temperature, air blowing speed, and direction of the room temperature, and receives the calculation results from the set temperature calculation means 7a. a set temperature changing means 8a for changing the set temperature based on the received temperature, and the air blowing speed calculating means 7.
A blowing speed changing means 8b changes the blowing speed upon receiving the calculated output from the air blowing direction calculating means 7c, and a blowing direction changing means 8c changes the blowing direction upon receiving the calculated output from the blowing direction calculating means 7c.
It is composed of.

Reference numeral 9 denotes air conditioning control means that is controlled in response to the output from the changing means 8, which includes a compressor 9a for compressing refrigerant, a blower 9b for blowing air, and a wind direction controller for changing the blowing direction and distributing the air. It consists of a changeable wing 9c. In addition,
The interface 6, calculation means 7, and change means 8 may be constructed by a microcomputer. In addition, (a) and (b) of FIG. 3 are diagrams showing a state in which the user 10 is frequently active and a diagram showing a state in which the user 10 is stationary. 13 is a wall, 13 is a ceiling, 14 is a floor surface, and 15 is a high temperature part.

Next, the operation of the air conditioner control device configured as described above will be explained. Data indicating the position of the user 10 detected by the human body detection means 1 and the body surface temperature of the user, and the wall 12, ceiling 13, floor surface 14, etc. detected by the object temperature detection means 2. Data indicating the surface temperature of the object is sent to the calculation means 7 via the interface 6. Also, when the user 10 inputs a thermal sensation from the sensory input section 4, the data input from the sensory input section 4 is sent to the calculation means 7 via the interface 6. At the same time, the user 1 detected by the human body detection means 1 before and after the movement of the user 10 from the calculation means 7
Data indicating the body surface temperature of 0 is stored in the body surface temperature storage section 5.

The calculation means 7 includes set temperature calculation means 7a,
The air blowing speed calculating means 7b and the air blowing direction calculating means 7c each set the room temperature based on the input data indicating the body surface temperature of the user 10 from the human body detecting means 1 and the surface temperature of the object from the object temperature detecting means 2. Calculates temperature, air blowing speed, and air blowing direction.

The calculation method of the calculation means 7 when the user 10 is active as shown in FIG. 3(a) will now be described. It is determined that the user 10 is in an active state because the position of the person detected by the human body detection means 1 has moved several times in a certain period of time, and the active state is calculated. The set temperature calculation means 7a in the calculation means 7 resets the set temperature to a temperature 1 to 2 degrees Celsius lower than the set temperature set according to the room temperature detected by the indoor temperature sensor 3. For example, if the room temperature detected by the indoor temperature sensor 3 is 2.
If the room temperature is 4℃ or higher, the reset temperature will be set to 2℃ lower than the set temperature. If the room temperature is 24℃ or lower, the reset temperature will be reset to 1℃ lower than the set temperature. If the room temperature is 20℃ or lower, resets the reset temperature to the same temperature as the set temperature.

Further, the air blowing speed calculation means 7b in the calculation means 7 suddenly performs an automatic operation when, for example, the reset temperature set by the set temperature calculation means 7a and the room temperature detected by the indoor temperature sensor 3 differ by 2°C or more. The nod is set to a weak nod when the temperature is 2°C or less, and a steep nod is set when the temperature of objects such as the wall 12, ceiling 13, and floor 14 detected by the object temperature detection means 2 is higher than the reset temperature. To,
If it is low, set it to a weak nod. Furthermore, calculation means 7
The air blowing direction calculating means 7c calculates the air blowing direction so that the air is blown in a direction other than the position of the user 10 detected by the human body detecting means 1, and the object temperature detecting means 2
The air blowing direction is calculated based on information on the surface temperature of objects such as the wall 12, ceiling 13, and floor 14 detected by the system to perform air conditioning using radiation. When the temperature is higher than the surface temperature of the wall 12 or the ceiling 13, the air blowing direction is set in the direction of the wall 12 during heating and in the direction of the floor 14 during cooling.

On the other hand, as shown in FIG. 3(b), the user 1
The calculation in the calculation means 7 when 0 is a stationary state is performed as follows. That is, the set temperature calculation means 7a in the calculation means 7 resets the set temperature to a temperature 1 to 2 degrees higher than the set temperature that was set according to the room temperature detected by the indoor temperature sensor 3. for example,
If the room temperature detected by the indoor temperature sensor 3 is 24°C or higher, the reset temperature is set to the same temperature as the set temperature, and if the room temperature is 24°C or lower, the reset temperature is set to 1°C higher than the set temperature. If the room temperature is 20°C or lower, the reset temperature is reset to a temperature 2°C higher than the set temperature.

Further, the air blowing speed calculating means 7b in the calculating means 7 calculates the air blowing speed so that, for example, air blowing is stopped, weak nodging, strong nodging, and steep nodging are performed at regular intervals, or according to 1/f fluctuation control. the wall 12 detected by the object temperature detection means 2;
When the surface temperature of objects such as the ceiling 13 and the floor 14 is higher than the reset temperature, a steep nod is set, and when it is lower, a weak nod is set. Further, the air blowing direction calculating means 7c in the calculating means 7 calculates the air blowing direction so that the air is blown in the direction of the position of the user 10 detected by the human body detection means 1, and the air blowing direction is calculated so that the air is blown in the direction of the position of the user 10 detected by the object temperature detection means 12. The air blowing direction is calculated based on information on the surface temperature of objects such as the ceiling 13 and the floor 14 so as to perform air conditioning using radiation.

The calculation results calculated by the calculation means 7 as described above are sent to the changing means 8 via the interface 6. The set temperature changing means 8a in the changing means 8 resets the set temperature based on the calculation result from the set temperature calculating means 7a in the calculating means 7, and resets the set temperature for the compressor 9a and blower 9b in the air conditioning control means 9.
is controlled so that the room temperature detected by the indoor temperature sensor 3 becomes the reset temperature.

[0033] Also, in the air blowing speed changing means 8b in the changing means 8, the air blowing speed calculating means 7b in the calculating means 7
The rotational speed of the blower 9b in the air conditioning control means 9 is controlled based on the calculation result from , and the air blowing speed is controlled to be changed. Further, the blowing speed changing means 8c in the changing means 8 controls the direction of the wind direction changing blade 9c in the air conditioning control means 9 based on the calculation result from the blowing speed calculating means 7c in the calculating means 7 to change the blowing direction. control.

The operation of the air conditioner control device configured as described above will be further explained with reference to the flowchart shown in FIG. 2 for the case of cooling shown in FIGS. 3(a) and 3(b). First, in step 1, the human body detection means 1 detects the location of the user 10 and the body surface temperature of the user 10, and the object temperature detection means 2 detects the wall 12, ceiling 13, floor 14, etc. The surface temperature of the object is detected. This detected data is then stored in the storage unit 5 in step 2, and the process proceeds to step 3.

In step 3, it is checked whether a certain period of time has elapsed since the human body detection means 1 started detecting the user 10, and if the certain period of time has not elapsed, the process returns to step 1. In step 3, for example, the human body detection means 1 detects the user, transfers the contents of the storage section 5 to the calculation means 7 every 10 seconds, and clears the stored contents of the storage section 5 each time. If this is done, the storage capacity of the storage unit 5 can be relatively reduced. If it is confirmed in step 3 that a certain period of time has elapsed, the process proceeds to step 4, in which it is confirmed whether the user has moved his/her location a certain number of times or more within a certain period of time. For example, the number of times the user's position is confirmed by the human body detection means 1 is counted, and if this count is 3 times/10 seconds or more, it is assumed that the user 10 is active frequently, and 3 times /10 seconds or less, the user 10 is considered to be stationary.

[0036] Then, if it is confirmed in this step 4 that the user has moved his/her location more than a certain number of times, it is determined that the user is in an active state, and the process proceeds to step 5 and subsequent steps, and it is confirmed that the number of movements is less than a certain number of times. Then, it is determined that the user is in a stationary state, and the process proceeds to step 8 and subsequent steps. In step 5, the calculation means 7 calculates based on the detection outputs from the human body detection means 1 and the object temperature detection means 2, and the process proceeds to step 6. In step 6, the changing means 8 controls the air conditioning control means 9 based on the calculation result calculated by the calculating means 7. In other words, the direction of the air blowing is to avoid the user 10, and according to the wind speed based on the calculation result, to envelop the user as shown in FIG. Air conditioning will be performed using radiation. Then, the process proceeds to step 7, in which it is checked whether the room temperature detected by the indoor temperature sensor 3 has reached the reset temperature, and if it has reached the reset temperature, the process returns to step 1 and the above-described operations are repeated.

On the other hand, when the process proceeds to step 8, the calculation means 7 performs calculations based on the detection outputs from the human body detection means 1 and the object temperature detection means 2, and the process proceeds to step 9. In step 9, the changing means 8 controls the air conditioning control means 9 based on the calculation result calculated by the calculating means 7. That is, the air is blown in the direction of the user 10, and the set temperature is reset based on the calculation result according to the wind speed based on the calculation result, as shown in FIG. 3(b). A certain amount of air is blown. Then, the process proceeds to step 10, and it is checked whether a certain period of time, for example, one minute, has elapsed since the start of air conditioning in step 9. If the certain period of time has elapsed, the process returns to step 1 and repeats the above-described operation.

Example 2. FIG. 4 shows a second embodiment of the present invention, and shows a human position detection sensor used in a control device for an air conditioner. This human position detection sensor can be applied to the radiation temperature detection means consisting of the human body detection means 1 and the object temperature detection means 2 shown in the first embodiment. In Fig. 4, 27 is a radiant temperature detection unit that detects infrared rays radiated by the human body of the user as well as infrared rays radiated by objects such as walls, ceilings, and floors around the user. A plurality of detection sensors may be used as radiation thermometers, one radiation thermometer may be provided in the drive section, or a thermopile-type infrared sensor may be used. It is used as a radiation thermometer to detect the surface temperature of objects around the user, and a pyroelectric infrared sensor detects changes in infrared energy within the detection area to detect the user's position. It's a good thing.

Reference numeral 22 denotes an amplifying section that amplifies the detection output from this radiant temperature detecting section, and if only a thermopile type is used as the radiant temperature detecting section 27, a differential type amplifier is added and a pyroelectric infrared The position of the user may be detected using something similar to a sensor. 2
Reference numeral 3b denotes a determining means comprising a comparator to which the detection signal from the radiant temperature detecting section 27 amplified by the amplifying section 22 is inputted to one input terminal. 28 is a reference value changing means for receiving a detection output indicating the temperature of the object from the radiant temperature detecting means and changing a reference value inputted to the other input terminal of the comparator 23b constituting the discriminating means; An analog/digital converter 28a that converts the amplified detection output from the radiant temperature detection section 22 indicating the temperature of the object into a digital signal, and an analog/digital converter 28a that receives the digital signal from the converter 28a and converts it into a digital signal. A reference value generator comprising a microcomputer that calculates a reference value based on the correction graph shown and outputs a reference digital value for the comparator 23b, and outputs a human body detection result upon receiving the comparison result from the comparator 23b. section 28b, and a digital/digital converter that receives the reference digital value from the reference value generating section 28b, converts it into a reference analog value, and outputs it to the other input terminal of the comparator 23b.
It is composed of an analog converter 28c.

Note that FIG. 5 is a diagram for outputting a reference value, and the horizontal axis represents the surfaces of objects such as walls, ceilings, and floors around the user detected by the radiant temperature detection section 27. The value indicates the temperature, and the vertical axis indicates the reference value. The user's body surface temperature, which is detected by radiation from the user, is almost constant, but the surface temperature of objects such as walls, ceilings, and floors changes depending on the weather and air conditioning, and the temperature of the user's surroundings changes. In order to perform stable and highly accurate position detection of the user according to the
max), and when the surface temperature of the object is below 15°C (Tmin), the reference value is set to 25°C (Tmin), and when the surface temperature of the object is in the range of 25°C to 15°C, the reference value is set to 35°C.
℃ and 25℃ are connected on a straight line.

Next, the operation of the human position detection sensor used in the air conditioner control device configured as shown in FIG. 4 will be explained based on the flowchart shown in FIG. First, when the human position detection operation starts, in step 1, the maximum value (Tmax) of the reference values is output from the reference value generating section 28b of the reference value changing means 28, and the process proceeds to step 2. In step 2, the comparator 23b compares the detection output from the human body detection sensor in the radiant temperature detection section 27 with the maximum reference value (Tmax) from the reference value generation section 28b, and the detection output is the maximum of the reference value. If it is greater than the value (Tmax), it is determined that the user's position has been confirmed, and the process proceeds to step 3, where air conditioning is performed in accordance with the user's position.

Further, if it is confirmed in step 2 that the detection output is smaller than the maximum reference value (Tmax), the process proceeds to step 4, where the detection output from the object temperature detection sensor in the radiant temperature detection section 27 is detected. is the reference value changing means 2
8 is input to the reference value generating section 28b, and the process proceeds to step 5. In step 5, it is determined in which range the surface temperature of the object detected by the radiant temperature detection section 27 is, and the process proceeds to one of steps 6, 7, or 8. In steps 6, 7, or 8, the reference value is changed based on the relationship shown in FIG. 5, and the process returns to step 1, and the above process is repeated to confirm the user's position.

Note that when returning to step 1 from step 6, 7 or 8, if the detection output indicating the user's body surface temperature from the radiant temperature detection section 27 is less than the reference value from the reference value generation section 28b, the It is determined that there is no user in the detection range, and the same operation as above is repeated in the next detection range. Further, if the device shown in FIG. 4 is used to detect the position of a person in the first embodiment shown in FIG. 1, even more accurate control can be achieved.

[0044]

Effects of the Invention As described above, the first aspect of the present invention is to detect the infrared rays radiated by the human body to detect the position and temperature of the human body, and to radiant temperature detection means that detects the temperature of an object by detecting infrared rays radiated by the radiant temperature detection means; set temperature calculation means that receives the detection output from the radiant temperature detection means and calculates the set temperature; and detection from the radiant temperature detection means. A blowing speed calculating means receives the output and calculates the blowing speed, a blowing direction calculating means receives the detection output from the radiant temperature detecting means and calculates the blowing direction, and receives the calculated output from the set temperature calculating means and calculates the set temperature. a set temperature changing means for changing the air blowing speed; a blowing speed changing means for changing the air blowing speed in response to a calculated output from the air blowing speed calculating means; and an air blowing direction changing means for changing the air blowing direction in response to a calculated output from the air blowing direction calculating means. Since the system is equipped with means, air conditioning can be performed taking into consideration the user's activity status and the user's surrounding environment, and the entire room can be evenly air-conditioned, and the room temperature, wind direction, and wind speed can be controlled according to the user's activity status. This has the effect that a control device for an air conditioner can be obtained.

The second aspect of the present invention is to detect the temperature of the human body by detecting the infrared rays radiated by the human body, and also to detect the infrared rays radiated by objects such as walls, ceilings, or floors around the human body. radiant temperature detecting means for detecting the temperature of an object, discriminating means for comparing a detection output indicating the temperature of the human body from the radiant temperature detecting means with a reference value to discriminate the human body, and radiant temperature detecting means. The standard value changing means changes the reference value input to the discrimination means in response to the detection output indicating the temperature of the object from the sensor, so the influence of the ambient temperature of the user is compensated for, and the detection accuracy is high and stable. This has the effect that an air conditioner control device having a human position detection sensor can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a control state in Embodiment 1 of the present invention.

FIG. 4 is a block diagram showing a second embodiment of the invention.

FIG. 5 is a diagram showing the relationship between the surface temperature of an object and a reference value in Example 2 of the present invention.

FIG. 6 is a flowchart for explaining the operation of the second embodiment of the present invention.

FIG. 7 is a block diagram showing a conventional automatic temperature setting device for an air conditioner.

FIG. 8 is a flowchart for explaining the operation shown in FIG. 8;

FIG. 9 is a block diagram showing a human body detection sensor in a conventional air conditioner control device.

[Explanation of symbols]

1 Human body detection means 2 Object temperature detection means 7. Calculation means 7a Set temperature calculation means 7b Air blowing speed calculation means 7c Air blowing direction calculation means 8. Change means 8a　　　　set temperature change means 8b Air blowing speed changing means 8c　　　　　　　Air blowing direction changing means 23b Comparator as discrimination means 27 Radiant temperature detection means 28 Standard value changing means

Claims (2)

[Claims] Claim 1: A radiant temperature sensor that detects infrared rays radiated by a human body to detect the location and temperature of the human body, and detects infrared rays radiated by objects such as walls, ceilings, or floors to detect the temperature of objects. a detection means, a set temperature calculation means for calculating a set temperature in response to a detection output from the radiant temperature detection means, a blowing speed calculation means for calculating a blowing speed in response to a detection output from the radiant temperature detection means, and the radiant temperature. A blowing direction calculating means for calculating the blowing direction in response to the detection output from the detecting means, a set temperature changing means for changing the set temperature in response to the calculating output from the set temperature calculating means, and a calculation output from the blowing speed calculating means. A control device for an air conditioner, comprising an air blowing speed changing means for changing the air blowing speed in response to the received air blowing speed, and an air blowing direction changing means for changing the air blowing direction in response to a calculation output from the air blowing direction calculation means. 2. A wall existing around the human body that detects the temperature of the human body by detecting infrared rays radiated by the human body;
A radiant temperature detection means detects the temperature of an object by detecting infrared rays radiated by an object such as a ceiling or floor, and a detection output indicating the temperature of the human body from this radiant temperature detection means is compared with a reference value to detect the human body. A control device for an air conditioner, comprising: a determining means for making a determination; and a reference value changing means for changing a reference value input to the determining means in response to a detection output from the radiant temperature detecting means indicating the temperature of an object.