JP2921256B2 - Air conditioner control device, human body detection sensor, and air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of an air conditioner which automatically detects a human body when a person approaches an air conditioner and blows the air uniformly in the direction in which the human body exists.

[0002]

2. Description of the Related Art FIG. 41 is a block diagram showing a conventional air conditioner control device, and FIG. 42 is a flowchart showing the operation thereof. Reference numeral 1 denotes a remote controller, which includes a setting unit 1a for setting by a human operation and a transmitting unit 1b for converting the set information into an infrared signal and transmitting the infrared signal to the air conditioner. Numeral 2 denotes an air conditioner, a receiving means 2a for receiving an infrared signal transmitted from the remote controller 1 and converting it into an electric signal, a main control means 2b for controlling the air conditioner, and a set temperature changing means 2 for changing a set temperature.
c, a wind direction changing means 2d for controlling the wind direction, a wind direction control blade 2e capable of changing the blowing direction up, down, left and right, a wind direction control blade driving means 2f for driving the wind direction control blade 2e, and a wind speed for controlling the blowing speed. Changing means 2g and blower 2h for blowing air
And blower driving means 2i for driving the blower 2h.

Next, the operation will be described with reference to the flowchart shown in FIG. 42. In step 501, the person sets the air conditioning system to the spot operation by operating the remote controller. Next, in step 502, it is determined whether the air conditioning when the spot operation is set is heating or not. If the air conditioning is heating, in step 503, the set temperature is set to be higher than usual by the set temperature changing unit 2c. Then, in step 504, the blower driving means 2g is operated by the wind speed changing means 2g.
The blowing speed is increased by increasing the rotation speed of the blower 2h through i. If it is determined in step 502 that the air conditioner is in the dry / cooling mode, the flow of the wind is controlled by the wind direction changing means 2d in step 505.
The airflow direction is changed to downward blowing by lowering the airflow direction control blades 2e. Step 5
At 06, the blowing speed is reduced by the wind speed changing means 2g. Then, the air conditioning system is set to the spot operation for both dry and air conditioning, and it is determined in step 7 whether or not 15 minutes have elapsed since the start of the operation. If 15 minutes have not elapsed, the process returns to step 502 again, and the same operation as described above is performed. After the elapse of 15 minutes, the spot driving set by the person ends.

[0004] In addition, Japanese Patent Application Laid-Open No. 63-143441 discloses a prior art disclosed by the applicant and disclosed in Japanese Patent Application Laid-Open No. 63-143441, which discloses a technique for controlling air flow by detecting the direction and distance of a human body. Japanese Unexamined Patent Publication No. 63-143448 discloses a technique of wind temperature control, and Japanese Unexamined Patent Publication No. 1-147244 discloses a technique of wind direction, wind speed and blow-out temperature based on human body detection. Japanese Unexamined Patent Publication No. Hei.
No. 5, Japanese Patent Laid-Open Publication No. 5 (1993), further discloses a technique for controlling a blower when a human body is detected in a room by a human body sensor.
No. 78847.

FIG. 43 shows, for example, Japanese Utility Model Laid-Open No. 63-15 / 1988.
It is a figure which shows the conventional human body detection sensor shown by Unexamined-Japanese-Patent No. 0243. In the figure, reference numeral 2 denotes an air conditioner, and 3 denotes a human body detection sensor, which is divided into sections of 3r, 3s, and 3t, and each section is provided with 3x, 3y, and 3z infrared detecting elements. Reference numeral 4 denotes infrared light incident on the human body detection sensor 3.

Next, the operation will be described. Air conditioner 2
Is divided into sections 3r, 3s, and 3t having different directions so that the direction of the incident infrared light can be identified. Inside the three sections 3r, 3s, 3t, the infrared detecting elements 3x,
3y and 3z are provided, and when an incoming infrared ray 4 is detected, it is transmitted to a control circuit (not shown) provided inside the air conditioner 2, and controls the air conditioner 2 according to its control specifications. .

Japanese Patent Application Laid-Open No. 1-121647 discloses a technique in which a single infrared sensor drives a shielding member to identify a partial region and detect a human body.

FIG. 44 shows, for example, Japanese Utility Model Laid-Open No. 1-8825.
FIG. 45 is a front view showing a conventional air conditioner shown in Japanese Patent Publication No. 1-No. 1 and FIG. 45 is a front view of a part where a human body detection sensor is attached to an air conditioner, and FIG. 46 is a part where a human body detection sensor is attached to the air conditioner. FIG. 47 is a plan view of a room equipped with an air conditioner equipped with a human body detection sensor that can be adjusted in the left-right direction. FIG. 47A shows a case where the air conditioner is installed in the center.
(B) is a plan view in the case where the air conditioner is installed at the left end, FIG. 48 is a plan view of a room in which an air conditioner equipped with a fixed type human body detection sensor is installed, and (a) is a case where the air conditioner is installed in the center.
(B) is a top view showing the case where it is installed at the left end.

In the drawing, reference numeral 3 denotes a human body detection sensor, 3a
Is a human body detection sensor in which the human body detection sensor 3 mounted in the front direction is rotationally displaced rightward, and 3b is a human body detection sensor in which the human body detection sensor 3 is rotationally displaced leftward. 3c is a detection area where the human body detection sensor 3 can detect a human body indoors,
Reference numeral 3d denotes a non-detection area in which the human body detection sensor 3 cannot detect a human body, and reference numeral 5 denotes a left-right direction adjustment axis centered on rotating the human body detection sensor 3 in the left-right direction. 6 is a stopper for stopping the rotation of the human body detection sensor, 6a is a stopper for right rotation, and 6b is a stopper for left rotation.

Next, the operation will be described. A stopper 6 for stopping the rotation of the human body detection sensor 3 at a certain fixed rotation above and below a central portion of the human body detection sensor 3 with a horizontal adjustment shaft 5 centered when the human body detection sensor 3 rotates left and right.
Is provided at the upper left of the human body detection sensor 3. FIG.
6, when the human body detection sensor 3 is installed in a direction parallel to the air conditioner 2 and the air conditioner 2 is installed at the left end of the room, FIG.
It has a detection area 3c as shown in FIG. At this time, since most of the left side of the detection area 3c detects the wall direction, a large non-detection area 3d is generated on the right side of the room. As shown in FIG. 46, when the human body detection sensor 3 is rotated rightward about the horizontal adjustment axis until the rotation is stopped by the stopper 6, the air conditioner 2 is installed at the left end of the room.
It has a detection area 3c as shown in FIG. Since the detection area 3c is rightward from the air conditioner 2, the non-detection area 3d is relatively small, and more human bodies can be detected.

FIG. 48 is a side sectional view of a conventional hot-wire detector disclosed in Japanese Utility Model Laid-Open Publication No. Sho 61-152929.
In the figure, 7 is an infrared detector for detecting infrared light, 8 is a light emitting diode for changing the detection direction to light, 9 is a base for fixing the infrared detector 7 and the light emitting diode 8, 10 is a Fresnel lens plate for collecting infrared light, Numeral 11 covers the infrared detector 7 and the light emitting diode 8, and the Fresnel lens plate 1
This is a cover for fixing 0.

Next, the operation of the hot-wire detector of FIG. 48 will be described. When the hot-wire detector is mounted on a ceiling, a wall, or the like, the light emitting diode 8 is turned on and the Fresnel lens plate 10 is moved in the direction of arrow B2 so that the center of the light emitting diode 8 and the lens center of the Fresnel lens plate 10 are moved. And light emitting diode 8 with the same height on the drawing.
Is emitted as parallel light through the Fresnel lens plate 10 to confirm whether a person stands at a desired place and sees the light of the light emitting diode 8. That is, the light emission area Q 'of the light emitting diode and the detection area P' of the infrared detector
Is equal to the distance between the mounting position of the light emitting diode and the infrared detector, the two areas Q 'and P' can be regarded as substantially overlapping when viewed from a distance, and the Fresnel lens plate 10 It is possible to confirm whether or not the standing place is the detection area P 'based on whether or not the entire surface is brightly lit (within the radiation area Q'), and the mounting direction is determined based on this area confirmation. .

In the hot-wire detector, in actual use, the light emitting diode 8 is turned off and the Fresnel lens plate 10 is moved in the direction of arrow B1 so that the center of the infrared detector and the center of the lens are shown on the drawing. In this state, infrared rays emitted from the inside of the detection area P ′ are made incident on the infrared detector through the Fresnel lens plate 10, and the amount of fluctuation of the incident infrared rays emits a predetermined detection signal.

[0014]

The control method of the conventional air conditioner is configured as described above. Therefore, when it is desired to directly apply the hot or cold air such as when taking a bath in summer or changing clothes in winter, the air conditioner is not used. There has been a problem that it is necessary to perform difficult and difficult setting operations with a remote controller or the like in order to change the blowing direction, the blowing amount, and the set temperature.

Further, in order to detect the position of the human body, the infrared sensor must be rotated by a motor. When the infrared sensor is rotationally driven by the motor in this way, the infrared sensor vibrates and malfunctions, and the human body detection method and configuration become complicated, and the human body detection sensor becomes large and the cost increases. Was. In addition, since the power supply of the air conditioner is turned on until the room temperature stabilizes at the set temperature, it is very unpleasant for a person, or wasteful power is consumed due to forgetting to turn off the air conditioner.

Further, three infrared detecting elements are required to identify the three directions, and there are problems that the size becomes large, it cannot be installed in a narrow place, and it becomes expensive.

In addition, when changing the human body detection area, a human body detection sensor or an infrared detector must be rotated, and a rotation mechanism such as a left-right adjustment shaft and a rotation space for the human body detection sensor are required. Problems such as a decrease in

In addition, the human body sensor only detects the presence or absence of a human body and does not consider information about the number of people in the room. Even if the number of people increases or decreases, only air conditioning control with a set air volume can be performed. Since it is not performed, it is not blown to the human body, which is insufficient in terms of air conditioning comfort. Therefore, it is necessary to detect the number of persons in the room and control the wind direction and the amount of air in accordance with the number of persons. In addition, the human body detection method and configuration are complicated,
There were problems such as an increase in the size of the human body detection sensor and an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended to automatically and comfortably control an air conditioner in accordance with the movement of a person without performing troublesome and difficult setting operations. It is another object of the present invention to provide an air conditioner control device capable of reducing the number of setting buttons of a remote controller.

Further, the detection area where a plurality of infrared sensors are arranged in parallel is partially overlapped without rotating the infrared sensor by a motor, and the sensor signal detected by the determination means is analyzed and determined to determine the presence of a human body. An object of the present invention is to provide a low-cost human body detection sensor that can detect the direction and the distance from an air conditioner to a person, and has a simple configuration. It is another object of the present invention to realize an automatic air-conditioning system that does not bother humans by mounting a human body detection sensor on an air conditioner and predicting human behavior from the detection data.

It is another object of the present invention to provide a small and inexpensive human body detection sensor that can identify three directions with two infrared detection elements, and to provide a configuration suitable for this human body detection sensor. I do.

Also, by moving the Fresnel lens minutely without changing the orientation of the human body detection sensor, the detection area can be changed, and it is necessary to confirm the detection area because it is not affected by the installation location. Absent. It is another object of the present invention to provide an air conditioner equipped with a human body detection sensor that does not require a rotating mechanism and a rotating space, thereby improving design.

In order to improve the comfort of air conditioning, not only the presence or absence of a human body but also the number of people can be detected and air conditioning control adapted to the number of people can be performed. The purpose is to obtain a harmonic machine.

[0024]

According to a first aspect of the present invention, there is provided a control apparatus for an air conditioner, wherein two infrared sensors having a predetermined infrared detecting area are overlapped with each other so as to detect a position of a human body. Arranged on the same plane, position detection means for detecting the distance from the direction of presence and output intensity of the human body from the output of the infrared sensor, set temperature change means for changing the set temperature, wind direction to change the blowing direction and blowing speed and The wind speed changing means and the position detecting means allow the human body to enter within a certain distance
When it is detected, the set temperature changing means and the wind direction and wind speed changing means blow strong cold air or hot air to the position where the human body exists.
And main control means for performing control so as to start .

According to a second aspect of the present invention, there is provided a control device for an air conditioner, wherein a plurality of infrared sensors installed on the same plane for detecting infrared rays radiated by a human body, and the infrared rays are focused on the infrared sensors. Fresnel lens and infrared sensor output signal
A human body detection sensor consisting of an amplifier circuit for amplifying only the human activity frequency band in a signal analyzing means for analyzing the output signal of the human body detection sensor, the analysis result of the signal analysis unit, time zone body Accumulate detection data for a predetermined period
Behavior prediction means for predicting human behavior from the results ,
From the results of this behavior prediction means, it is predicted that the probability of existence of a person is high.
In this case, a means for automatically starting operation, a wind direction control means for controlling a wind direction, a flow rate control means for controlling a flow rate, and a room temperature control means for controlling a set temperature are provided.

According to a third aspect of the present invention, the human body detecting sensors are on the same plane.
A plurality of infrared detection elements installed on the top, in the human body detection sensor to detect the presence of the human body by detecting infrared light emitted from the human body, and partially overlap the detection range of the plurality of detection elements, The number of detection areas is larger than the number of detection areas.

According to the human body detection sensor of the fourth aspect, the human body is
A plurality of red <br/> external sensor installed on the same plane for detecting the infrared rays morphism, a Fresnel lens for condensing the infrared ray to the infrared sensor, in the output signal from the infrared sensor
An amplification circuit that amplifies only the human activity frequency band , a fixture that attaches a human body detection sensor to the air conditioner, and a human body detection area
Sly <br/> is de Fresnel lens laterally to allow change, and the guide grooves to stabilize, the Fresnel lens scan
A stop for stopping the ride is provided.

[0028] The air conditioner according to claim 5 includes a plurality of infrared sensors installed on the same plane for detecting infrared rays.
A Fresnel lens that focuses infrared light on the infrared sensor, and a human activity frequency band in an output signal of the infrared sensor.
A human body detection sensor consisting of an amplification circuit that amplifies only
From the output signal of the human body detection sensor, the non-detection time period
And a number determining means for determining the number of people.

[0029] The air conditioner according to claim 6 is the air conditioner according to claim 5.
The air conditioner is provided with wind direction control means for controlling the wind direction based on the number of people determined by the number of people determination means, and air volume control means for controlling the air volume.

[0030]

According to the first aspect of the present invention, the control device of the air conditioner automatically changes the set temperature, the blowing direction, and the blowing speed when a person approaches within a certain distance from the air conditioner according to a signal from the position detecting means. And blow out stronger cold and warm air depending on the position of the human body.

In the control device for an air conditioner of the present invention, a plurality of infrared sensors are arranged in parallel at different detection angles and in parallel so that a part of the detection area is superimposed, and the output signal is analyzed by the judgment unit. It accumulates and predicts human activity from the result. When the existence probability of the human body is high, the operation is automatically started and the wind direction, air volume and room temperature are controlled.

According to a third aspect of the present invention, when a human body is present in a detection area where two infrared detecting elements partially overlap, both infrared detecting elements detect infrared rays.
In other cases, the detection area is enlarged because detection is performed by only one of the infrared detection elements.

In the human body detection sensor according to the fourth aspect, the Fresnel lens is installed on the human body detection sensor such that it can be minutely moved, and the human body detection area can be changed depending on the installation position.

In the air conditioner of the present invention, a plurality of infrared sensors are arranged on the same plane in the human body detecting sensor, infrared rays are collected from a plurality of areas by a Fresnel lens, and the output signals are analyzed and determined. By doing so, the number of people can be detected.

In the air conditioner of the sixth aspect, the air conditioning control is performed by the number of persons determined by the number of persons determination means.
The air conditioning comfort is improved by the wind direction control means for controlling the wind direction and the air flow rate control means for controlling the air flow.

[0036]

[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Referring to FIG. 1, reference numeral 12 denotes position detecting means for detecting the direction in which a human body exists and the distance from the air conditioner 2; 2b, main control means for performing main control of the air conditioner 2; and 2c, set temperature changing means for changing a set temperature. 2d is a wind direction changing means for changing the blowing direction, 2d
e is a wind direction control wing that can change the blowing direction up, down, left and right, 2f
Is wind direction control blade driving means for driving the wind direction control blade 2e, 2g
Is a wind speed changing means for changing the blowing speed, 2h is a blower for blowing air, and 2i is a blower driving means for driving the blower 2h.

Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. In step 211, the position detection means 212 detects the position of the human body. Then, it is determined in step 212 whether or not the human body has entered within a certain fixed distance around the air conditioner 2. If the distance is outside the predetermined distance, the process returns to step 211, and the operation of detecting the human body position by the position detecting means 212 is repeated again. If it is within the predetermined distance, the set temperature is changed by the set temperature changing means 2c in step 213. When changing the set temperature, for example, in the case of heating, the set temperature is changed slightly higher than usual, and in the case of dry / cooling, the set temperature is changed slightly lower than normal. Then, in step 214, the blowing direction is changed toward the human body by the wind direction changing means 2d, and in step 215, the blowing speed is changed to high by the wind speed changing means 2g.

Next, in step 216, it is determined how many minutes have elapsed since the spot operation started. If a certain period of time has elapsed, the series of operations ends. If the fixed time has not elapsed, step 2 is repeated until the fixed time has elapsed.
Returning to 12, the same spot operation is performed.

FIG. 3 is a front view of the position detecting means 12,
FIG. 4 is a vertical sectional view when the position detecting means 12 is viewed from the side, and FIG. 5 is a horizontal sectional view when the position detecting means 12 is viewed from the top. The position detecting means 12 detects infrared rays radiated by the human body. Detection sensor L3 and infrared sensor R3
, Two Fresnel lenses 10 for condensing infrared light on the infrared sensor, and an amplifier board 14 on which an amplifier for amplifying the output of the infrared sensor is mounted.

FIG. 6 is a plan view when the position detecting means is mounted on the air conditioner 2 and installed indoors. 12 is a position detecting means, 12a, 12b and 12c are position detecting means 1.
2 is a position detection area where the position of the human body can be detected.
The position detection area L12 detects the left side of the room, the position detection area R12 detects the right side, and the position detection area C12 where the position detection area L and the position detection area R overlap. By using the Fresnel lens 10, the infrared sensor L3 and the infrared sensor R3 are disposed so as to have a human body detection area L and a position detection area R, respectively. As shown in FIG. 6, the two infrared sensors are mounted on the air conditioner 2 so that their human body detection areas overlap each other.

Next, a method of detecting a human body position by the position detecting means 12 will be described with reference to Table 1. When only the infrared sensor L3 detects infrared rays emitted by the human body, it is determined that the human body exists in the position detection area L12. When only the infrared sensor R3 detects a human body, it is determined that the human body exists in the position detection area R12. When the infrared sensor L3 and the infrared sensor R3 detect a human body at the same time,
It is determined that the human body exists in the position detection area C12. Then, the fact that the output result of the infrared sensor changes depending on the distance is used. For example, assuming that the infrared sensor has characteristics as shown in FIG. 7 and the boundary value is 5 V, when the output of the infrared sensor is 5 V or more, it is determined that the human body has entered within 1 m from the air conditioner 2. .

As described above, the existence position of the human body can be estimated from the fact that the existence area and the distance of the human body can be detected.

[0043]

[Table 1]

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described. FIG.
1 is a front view of an air conditioner equipped with a human body detection sensor according to the present invention. In FIG. 8, 2 is an air conditioner, 3 is a human body detection sensor, 2e is a wind direction changing wing for changing the wind direction, and 2j is an outlet. 9 is a front view of the human body detection sensor, FIG. 10 is a vertical sectional view, and FIG. 11 is a horizontal sectional view. In the figure, reference numeral 3 denotes a human body detection sensor, which is disposed horizontally and has an infrared sensor L3 mainly for detecting infrared rays from the left side, an infrared sensor R3 mainly for detecting infrared rays from the right side, an infrared sensor L3 and an infrared sensor R3. Fresnel lens 10 for condensing infrared light from three directions, left, right and center, amplifier circuit 13 for amplifying only the human activity frequency band (about 1 Hz) in the output signal of the infrared sensor, infrared sensor and Fresnel lens 10, amplifier circuit A frame 14 for fixing the body 13 and a mounting jig 15 for installing the human body detection sensor in the air conditioner. FIG. 12 is a plan view of a light distribution diagram showing a detection area when an air conditioner equipped with a human body detection sensor according to the present invention is installed in a room, and FIG.
Is a front view, and FIG. 14 is a side view. Reference numeral 16 denotes a human body detection area in which the human body detection sensor can detect a human body, and includes six areas of a human body detection area A16, a human body detection area B16, a human body detection area C16, a human body detection area D16, a human body detection area E16, and a human body detection area F16. Possess. Human body detection area A16,
The human body detection area B16 and the human body detection area C16 indicate areas where the infrared sensor L can detect a human body, and the human body detection area D
16, a human body detection area E16, and a human body detection area F16 indicate areas where the infrared sensor R3 can detect a human body.
The human body detection area C16 and the human body detection area D16 are superimposed so that they can be detected by both infrared sensors.
Reference numeral 17 denotes a human body detection angle of the human body detection sensor, which is a human body detection angle A17, a human body detection angle B17, a human body detection angle C17,
It has six detection angles: a human body detection angle D17, a human body detection angle E17, and a human body detection angle F17. Human body detection angle A1
7, the human body detection angle B17 and the human body detection angle C17 indicate the human body detection angle of the infrared sensor L, and the human body detection angle D1
7, the human body detection angle E17 and the human body detection angle F17 indicate the human body detection angle of the infrared sensor R3. The detection angles of the human body detection angle C17 and the human body detection angle D17 are superimposed so as to be detectable by both infrared sensors.

FIG. 15 is a control block diagram of the human body detecting sensor showing the configuration of the present invention. 18 is an input circuit for interfacing an output signal of the amplifier circuit 13 with an A / D converter, and 19 is an A / D converter for outputting an output signal of the human body detection sensor.
A / D converter for converting, 20 is a human body detection sensor 3
A determination unit for determining the position of a person from the output signal of the above comprises analysis means 20 for analyzing the captured signal, and estimation means 20 for estimating the position of the human body from the result of the analysis means. Reference numeral 21 denotes a memory for storing the date and time when the human body is detected, 22 a timer for counting the current time, 23 an output circuit for interfacing the determination unit 20 with each control unit, and 24 a wind direction based on the result of the estimation unit. Is a wind direction control means for controlling the air flow, and 25 is a room temperature control means for controlling the set temperature.

FIG. 16 is a flowchart of the human body position detection showing the flow of the waveform processing of the human body detection sensor of the present invention. FIG. 17 shows an output signal of the infrared sensor L3 and an output signal of the infrared sensor R3 when the human body detection sensor according to the present invention detects a human body. FIG. 18 is a table for determining the position of the human body based on the waveform processing of the output signal of the human body detection sensor according to the present invention.

Next, the operation will be described with reference to FIGS. In step 321, a human body detection operation is performed on the detection area shown in FIGS. 12 to 14 by the infrared sensor L3 and the infrared sensor R3. If the infrared sensor detects a human body in step 322, step 3
Proceeding to step 23, if no human body is detected, step 321
repeat. In the human body detection method, for example, as shown in FIG. 17, the output signal of the human body detection sensor is set at a certain boundary value (Vth
d) If it is greater than or equal to, it can be determined by regarding that a human body has been detected. Alternatively, it is also possible to determine the difference between the current data and the previous data of the output signal of the human body detection sensor and determine whether the difference is equal to or greater than a certain boundary value. Next, at step 323, it is determined whether or not the infrared sensor L3 has detected a human body. Then, if it is detected in step 324, L = 1, and if it is not detected, L =
Set to 0. In step 325, it is determined whether the infrared sensor R3 has detected a human body. And step 3
At 26, R = 2 when detected, and R = 0 when not detected.

Next, in step 327, it is determined whether or not the output signal of the human body detection sensor is equal to or larger than a certain boundary value (Pthd). If the output signal is equal to or higher than Pthd,
In step 328, the frequency of the output signal is determined. The frequency of the output signal can be calculated by obtaining an approximate cycle from the difference between the time t1 of the maximum point and the time t2 of the minimum point in FIG. The calculated frequency is a certain boundary value (f
thd) It is determined whether it is equal to or less than thd. Since the human activity frequency is about 1 Hz, the boundary value fthd is 0.5 to
Select about 0.8 Hz. The calculated frequency is fthd
In the following cases, DIS = 0 is set. If the calculated frequency is equal to or higher than fthd, in step 329,
When the output signal is equal to or higher than Pthd, DIS = 1, and when the output signal is equal to or lower than Pthd, DIS = 0. Therefore, the following can be detected from the value of DIR (the sum of L3 and R3) and DIS. When both sensors detect at the same time, the person exists in the center direction where both detection areas overlap, and the person moves to the left when only the infrared sensor L3 is detected, and to the right when only the infrared sensor R3 is detected. Can be assumed to exist. The output is Pt
If the output signal frequency is higher than fd and the frequency of the output signal is equal to or higher than fthd and is in the frequency band of human activity, it can be considered that a human exists near the air conditioner. Therefore, as shown in FIG. 18, the direction and distance from the air conditioner can be determined, and the position of the human body in the room can be detected. Finally, step 3
At 30, the DIR (sum of L3 and R3), DIS data and the date and time when the human body was detected are stored in the memory.

Embodiment 3 FIG. FIG. 19 is a flowchart illustrating a control device of an air conditioner according to Embodiment 3 of the present invention. FIG.
The number of times the human body detection sensor according to the present invention has detected a human body in one day is the number of times the human body has been detected in each time zone, which is expressed every 30 minutes. (A) is the expected number of human body detections today,
(B) is the number of detected human bodies today, and (c) is the predicted number of detected human bodies one week later. Next, the operation will be described with reference to FIGS. Step 431
Then, a human body detection operation is performed. As a result, step 432
In, it is determined whether a human body has been detected. If no human has been detected, in step 433, the human body detection data for one day is stored separately from other data, and data for one week is accumulated. Then, in step 434, the main air conditioning is started. The blowing direction is the direction of the place where the human body is detected. Next, in step 435, if the predicted human body detection data is equal to or larger than a certain boundary value (Cthd), it is predicted that the existence probability of a person is high, and if it is equal to or smaller than Cthd, it is predicted that the existence probability of the person is low. When it is predicted that the existence probability is high in step 435, it is determined in step 436 whether or not it is 30 minutes before the predicted time of human body detection, and when it is 30 minutes before the predicted time, preliminary air conditioning is started in step 437. . The blowing direction is the direction of the place where the number of detections is the largest in the predicted data.

If it is predicted in step 435 that the existence probability is low, the current air-conditioning mode is determined in step 438. If the main air conditioning is currently being performed, preliminary air conditioning for 30 minutes is started in step 437.
If it is currently in preliminary air conditioning or stopped, step 44
At 0, the preliminary air conditioning is stopped. In step 439, it is determined whether 30 minutes have elapsed since the start of the preliminary air conditioning. After 30 minutes, the preliminary air conditioning is stopped in step 440.

The method of calculating the expected human body detection data is as follows. In step 433, the detection data and the detection time data of the human body actually detected by the human body detection sensor are sequentially stored in the memory. The data stored in the memory is processed into time-series data of the number of times of detection of the human body for each location every 30 minutes as shown in FIG. 20, and the data is stored again in the memory together with the date and time. The actual measurement data stored in FIG. 20B is added to the human body detection data predicted one week before in FIG. 20A, averaged, and the predicted value is calculated. At this time, when the prediction data is weighted and averaged as shown in FIG. 20C, it is possible to change the influence of the actually measured human body detection data on the prediction value. For example, FIG.
In (c), the predicted data is 2: 1 for the actually measured data.
Are weighted. The boundary value (Ct
hd) or more, it is determined that the existence probability of a person is high, and if it is less than or equal to the boundary value (Cthd), it is determined that the existence probability of a person is low. In FIG. 20C, for example, Cthd is set to 5 times.

Embodiment 4 FIG. In the third embodiment, the prediction is performed every week, but the human body detection prediction can be performed every next day, every month, or every year, depending on the data arrangement method.

Embodiment 5 FIG. In the third embodiment, the forecast data is created based on only the actually measured data. However, a data input unit may be provided so that the contents of the memory can be input and edited.

Embodiment 6 FIG. Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings. FIG.
In 1, the air conditioner 2 is provided with a human body detection sensor 3 having two infrared detection elements, and is arranged so as to divide the inside of the room into three sections A, B, and C.
The human body detection sensor 3 detects the infrared ray 5 emitted by the human body when the human 27 exists in the room, determines which area A, B, or C exists, and controls the air conditioning of the area by the air conditioner 2. To do. FIG. 22 is a diagram illustrating the human body detection sensor 3 in detail. Two infrared detection elements L3 and R3 are attached to the human body detection sensor 3 at an angle, and the detection areas are arranged so as to partially overlap each other, and the areas detected only by the infrared detection element L3 are denoted by A and A. The area detected by only the infrared detecting element R3 is B, and the area detected by both the infrared detecting element and R3 at the same time is C.

Next, the operation will be described. In FIG. 21, the size of the room to which the air conditioner 2 called the room air conditioner is attached is usually 8 to 12 tatami mats. If four or more people enter this size, the room may be used over the entire room. Many. However, when the room is used by a small number of one to three people, it is often the case that the room is used side by side. Further, considering the control range of the air conditioner 2, it is appropriate to divide the heave into three parts, that is, the right side, the center part, and the left side, and it is more efficient and more comfortable to perform air conditioning control for each part, and it is also energy saving. When a person enters the room, the human body detection sensor 3 detects the human body and counts the number of people at the same time. Further, as shown in FIG. 23, since the detection level of the human body detection sensor 3 changes depending on the number of people in the detection area, the number of people existing in that area can also be detected. Next, the number of persons present in the room counted by the human body detection sensor 3 is assumed to be n, the signal detected by the infrared detection element L3 is classified as a, and the signal detected by the infrared detection element R3 is classified as b, and the arrangement of humans is estimated. The result is as shown in FIG. That is, the number of persons detected by the infrared detecting element is n, and the number of persons detected by the infrared detecting element R3 is 0 (a = n
And if b = 0), there are only people in area A. Similarly, the number of persons detected by the infrared detecting element L3 is 0, and the number of persons detected by the infrared detecting element R3 is n (a = 0 and b = n)
Then there are only people in area B. Next, when the number of persons detected by the infrared detecting elements L3 and R3 is n (a = b = n), there are only persons in the area C. Next, the number of persons detected by the infrared detecting element L3 is n,
When the number of persons detected by the infrared detecting element R3 is smaller than n (a = n and 0 <b <n), persons exist in the areas A and C. Similarly, when the number of persons detected by the infrared detecting element R3 is n and the number of persons detected by the infrared detecting element L3 is smaller than n (b = n and 0 <a <n), there are no persons in areas B and C. Exists. In other cases, the existing people are dispersed throughout the room.

Next, the flow of this operation will be described with reference to the flowchart of FIG. When the program starts in step 101, the number of persons is counted in step 102. If there is no person in step 103, the process goes to step 107, and the processing when no person exists (in this case, OFF) is performed. In step 103, if n ≠ 0, that is, if there is a person, it is estimated in which area of the room 1 there is a person by the following routine. First, in step 104, a
If n = n, it is determined in step 105 whether b = n, and if yes, a = b = n and
It is determined that there is a person only in the NO area. Step 1
If b ≠ n at 05, it is determined at step 108 whether b = 0. If YES, it is determined in step 109 that there is a person only in A. If b ≠ 0 in step 108, it is determined in step 110 that there are persons in A and C. Further, if a ≠ n in step 104, the process proceeds to step 111. If b = n, it is determined in step 112 whether or not a is 0. If YES, it is determined in step 113 that there is a person only in the area B, and NO Then, in step 114, it can be determined that there are persons in B and C. And step 111
If b ≠ n, there is a person in all areas, and it is determined in step 115 that there are people at A, B, and C. Finally, with the results of these condition judgments, step 1
At 16 a control signal is output and fed back to the beginning.

Embodiment 7 FIG. FIG. 26 shows a seventh embodiment of the human body detection sensor 3. In this case, two infrared detecting elements L3 and R3 are arranged on a flat substrate, and a partition plate 6 is provided between them. For this reason, the infrared rays are input at an angle influenced by the partition plate 6. As a result, three sections A, B and C are formed as in the case of FIG.

Embodiment 8 FIG. FIG. 27 shows a sixth embodiment of the human body detection sensor. Also in this case, two infrared detecting elements L3 and R3 are arranged on a flat substrate. Reference numeral 10 denotes a Fresnel lens. The Fresnel lens 10 is a lens in which a fine groove is formed, and the refraction angle of incident light can be freely selected and designed.
Three sections of C are formed.

Embodiment 9 FIG. Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings. FIG.
8 is a front view of the human body detection sensor, FIG. 29 is a vertical sectional view,
FIG. 30 is a horizontal sectional view. In FIG. 31, (a)
A horizontal sectional view and a human body detection area of the human body detection sensor when the Fresnel lens according to Embodiment 7 of the present invention is installed at the center, and (b) is a horizontal sectional view and a human body of the human body detection sensor when the Fresnel lens is installed at the right end. Indicates the detection area. FIG. 32 is a horizontal sectional view of a room and a human body detection area diagram when the air conditioner according to the seventh embodiment of the present invention is installed in the room. (A) When the air conditioner is installed in the left corner of the room,
(B) shows the case where the air conditioner is installed at the center of the room, and (c) shows the case where the air conditioner is installed at the right corner of the room. Reference numeral 3 denotes a human body detection sensor for detecting a human body by detecting infrared rays radiated by the human body, and includes an infrared sensor 3 for detecting infrared rays, a Fresnel lens 10 for condensing infrared rays on the infrared sensor 3, and an infrared sensor 3. Amplifying circuit board 15a that is fixed and amplifies a small signal from infrared sensor 3
A frame 14 for fixing the circuit board 15a, a mounting jig 15 for attaching the human body detection sensor 3 to the air conditioner, a lateral guide groove 14b for sliding the Fresnel lens 10 in the horizontal direction, and a stabilization in the vertical direction. , A lens guide concave portion 10a for stopping the sliding of the Fresnel lens 10, and a lens stop convex portion 10b. 2 is an air conditioner, 3c is a detection area where the human body detection sensor 3 can detect a human body, and 3d is a non-detection area where the human body detection sensor 3 cannot detect a human body.

As shown in FIG. 31, a lateral guide groove 14a having a width of Fresnel lens 10 is formed at the end of the frame 14. The length of the guide groove 14a is substantially the same as the length of the Fresnel lens 10 in the vertical direction, and the length of the guide groove 14a is such that the Fresnel lens 10 can be slightly displaced in the horizontal direction. A Fresnel lens 10 for focusing infrared rays is installed in the lateral guide groove 14a and the vertical guide groove 14b. The distance from the Fresnel lens 10 to the infrared sensor L3 is always kept at the focal length of the Fresnel lens 10. When the Fresnel lens 10 is installed on the left side of the frame 14 as shown in FIG. 31A, the detection area 3c where a human body can be detected is in the right direction of the human body detection sensor 1. Therefore, even when the air conditioner 2a is installed on the left side of the room as shown in FIG. 32A, the center of the room is covered with the detection area 3c. The non-detection area is only the wall where the air conditioner is installed and its vicinity. FIG.
When the Fresnel lens 10 is installed at the center of the frame 14 as in (b), the detection area 3c in which a human body can be detected is in the front direction of the human body detection sensor 1. Therefore, FIG.
Even when the air conditioner 2 is installed in the center of the room as in FIG. 2B, the center of the room is covered with the detection area 3c. The non-detection area 3d is on both sides of the air conditioner and its vicinity. When the Fresnel lens 10 hits the frame 14 and is slightly displaced rightward until stopped by the lens stop as shown in FIG. 31B, the detection area 3c where a human body can be detected is obliquely rightward of the human body detection sensor 3. . Therefore, even when the air conditioner 2 is installed on the right side of the room as shown in FIG. 32C, the center of the room is covered with the detection area 3c. The non-detection area 3d is only the wall where the air conditioner 2 is installed and its vicinity.

Embodiment 10 FIG. Hereinafter, a tenth embodiment of the present invention will be described. FIG.
1 is a front view of an air conditioner equipped with a human body detection sensor according to the present invention. In FIG. 1, 3 is a human body detection sensor, 2 is an indoor unit of an air conditioner, 2e is a wind direction control wing for changing the wind direction, and 2j is an outlet.

FIG. 34 is a front view (a) of the human body detecting sensor 3, a vertical sectional view (b) with respect to the front view (a), and a horizontal sectional view (c) with respect to the front view (a). In FIG. 34, reference numeral 3 denotes a human body detection sensor, which is disposed horizontally and has an infrared sensor L3 mainly for detecting infrared rays from the left side, an infrared sensor R3 mainly for detecting infrared rays from the right side, an infrared sensor L3 and an infrared sensor R3. Left and right and center 3
In the output signals of the Fresnel lens 10 and the infrared sensor 3 for collecting infrared rays from the direction, the human activity frequency band (1 Hz)
Amplifying circuit 13 that amplifies only the degree), infrared sensor 3
And an attachment jig 15 for installing the human body detection sensor 3 in an air conditioner.

FIG. 35 is a control block diagram of a human body detecting sensor according to Embodiment 10 of the present invention. Reference numeral 18 denotes an input circuit that receives an output signal of the amplifier circuit 13, 19 denotes an A / D converter that performs A / D conversion of the output of the input circuit 18, and 20 denotes the number of persons by receiving the output of the preceding A / D converter 19. The number-of-people determining unit includes an analyzing means 20a for analyzing the fetched signal and an estimating means 20b for estimating the number of people from the result of the analyzing means 20a. Reference numeral 21 denotes a memory for storing data, which is composed of a memory 21a for storing a non-detection time and a memory 21b for storing the number of people determination result. 22, a timer for counting the current time; 23, an output circuit for interfacing the number-of-person determination unit 20 with each control unit; 24, a wind-direction control unit for controlling the wind direction based on the result of the number-of-person determination unit 20; A louver 25 controlled by the air volume control means for controlling the air volume based on the result of the number-of-people determination unit 20 and a fan 2h controlled by the air volume control means 25.

FIG. 36 is a flow chart of non-detection time detection showing the flow of signal processing of the human body detection sensor according to the present invention.

FIG. 37 is a flow chart of a person identification showing the flow of signal processing of the human body detection sensor of the present invention.

FIG. 38 is a diagram showing the presence or absence of a person for one minute and the elapsed time of the human body detection sensor according to the present invention.

FIG. 39 is a flowchart showing a specific operation control of an air conditioner using the human body detection sensor of the present invention.

FIG. 8 is a head count table in which the head count results of the left and right infrared sensors L3 and R3 according to the present invention are combined.

Next, the operation will be described with reference to FIGS. First, the principle of detecting the number of people will be described here. In order to detect the number of people, the non-detection time in one minute is detected. The non-detection time is one minute and the time when the human body is not detected. For example, in FIG. 38, the infrared sensor L3
Is the sum of the non-detection times of a, b, and c, and the non-detection time of one minute of the infrared sensor R3 is the sum of the non-detection times of d, e, f, g, and h. It will be. Therefore, if the number of people is large, the left and right infrared sensors L
3, the output signal from R3 increases and the non-detection time is shortened. If the number of people is small, the left and right infrared sensors L3, R3
And the non-detection time becomes longer. Then, the number of persons is determined based on the length of the non-detection time.

FIG. 36 is a flowchart for detecting the non-detection time. It is assumed that an interruption of the non-detection time detection is performed, for example, every 20 ms. In FIG. 36, step 6
01 indicates that the non-detection time of the infrared sensor L3 is calculated by substituting 1 for the variable X. In step 602, it is determined whether or not a human body has been detected by the left and right infrared sensors L3 and R3. Step 60 if no human body is detected
At 3, the non-detection time (NINZUU [x]) is counted. At this time, the infrared sensor L is used in NINZUU [1].
3. NINZUU [2] counts the non-detection time of the infrared sensor R3. If the human body detection is performed, the process proceeds to step 604. In step 604, X = 2
If not, it is assumed that the non-detection time of the infrared sensor R3 has not been detected, and 1 is added to X in step 605. If X = 2, the left and right infrared sensors L3, R3
Is detected as non-detection time, and the data of non-detection time is stored in the memory 21a in step 606.

Next, FIG. 37 is a flowchart showing the number of persons determination based on the non-detection time calculated in FIG. 36, and it is assumed that an interruption is made every 60 seconds. In step 607, the data stored in the memory 21a in step 606 is loaded. Then, at step 608, 1 is substituted for the variable X to declare the start of analysis of the output signal of the infrared sensor L3. Then, in step 609, it is determined whether or not the calculated non-detection time is equal to or more than a certain people boundary value (mthd1). When the calculated non-detection time is equal to or smaller than the number of persons boundary value (mthd1), H is set in step 611.
ANDAN [X] = 4 (multiple persons) and the boundary number of persons (mt
hd1) or more (STEP 10). In step 610, the calculated non-detection time is the number of people boundary value (m
thd2). If the calculated non-detection time is less than or equal to the number of persons boundary value (mthd2), HANDAN [X] is set to 2 (small number of persons) in step 612;
In step 13, it is assumed that HANDAN [X] = 1 (there is no person). Next, in step 614, if X is not equal to 2, it is considered that the number of persons of only the infrared sensor L3 has been detected, and
Proceeding to 15, at step 615, 1 is added to the value of X, and then the number of persons is detected by the infrared sensor R3. Also,
If X = 2, it is considered that the number of the left and right infrared sensors L3 and R3 has been detected, and the process proceeds to step 616. Step 6
HANDAN 16 for making the air-conditioning control judgment by the judgment of the number of persons combined with the left and right infrared sensors L3 and R3 at 16
[1] (Number of infrared sensor L3) and HANDAN
[2] Add the result of (the number of infrared sensors R3). Finally, in step 617, the data of the number of people determined by combining the left and right infrared sensors L3 and R3 is stored in the memory 21b.
Is accumulated in

Next, concrete air-conditioning operation control of an air conditioner using the present invention will be described with reference to FIGS. 39 and 40. FIG. 39 is a flowchart illustrating the air-conditioning operation control of the air conditioner. In FIG. 39, in step 618, data for determining the number of persons by combining the left and right infrared sensors L3 and R3 is loaded from the memory 21b. For example, as shown in the number-of-persons determination table combining the left and right infrared sensors L3 and R3 in FIG. If there is a small number of people on either side, 5 is a large number of people on either side, 6 is a large number of people on either side, and 8 is a large number of people on either side. Judge. Then, in a step 619, it is determined whether or not Z = 2 (there is no person). If the number of persons is Z = 2, the air-conditioning operation is stopped in step 620. If the number of persons is not Z = 2, the automatic operation is stopped in step 621 to start the air-conditioning operation.
Performs automatic operation start control. When the operation is started in step 621, it is determined in step 622 whether or not Z is an odd number (only one of the left and right sides has a person). If the number of people Z is odd, the process proceeds to step 623. If the number of people Z is not odd, the process proceeds to step 626. In step 623, it is determined whether or not Z = 3 (only one of the right and left is small). If Z = 3, the process proceeds to step 624, and if Z = 3, the process proceeds to step 625. Step 62
In Step 4, spot 1 air conditioning is performed. In this case, the louver 2e is set in the direction in which either the left or right person is present, and in the case of a small number of people, control is performed to reduce the fan speed and reduce the air volume in order to reduce the indoor noise caused by the fan 2h. In step 625, spot 2 air conditioning is performed. In this case, the louver 2e is set to the direction in which one of the left and right persons is present, and in the case of a large number of people, it is determined that the noise in the room due to the fan 2h is not bothersome, and control is performed to increase the fan speed and increase the air volume. In step 626, wide air conditioning is performed. This moves the louver 2e to the right (NANDAN
[1] / Z) * Stop for 60 seconds, then (NA
NDAN [2] / Z) * This is a control in which the operation is stopped for 60 seconds, the number of people in the room is large, and it is determined that the noise from the fan 2h is not bothersome.

[0073]

According to the first aspect of the present invention, there is provided a control device for an air conditioner, wherein two infrared sensors having a fixed infrared detection area are arranged on the same plane so as to partially overlap the detection areas so as to detect the position of a human body. Arranged, position detecting means for detecting the distance from the direction of presence of the human body and the output intensity from the output of the infrared sensor, set temperature changing means for changing the set temperature, wind direction and wind speed changing means for changing the blowing direction and blowing speed , The position detection means has detected that the human body has entered within a certain distance
In the case, the set temperature changing means and the wind direction and wind speed changing means ,
The main control means that controls to blow out strong cold air or hot air to the position where the human body exists is provided. The spot operation is performed at the same time, and there is an effect that a comfortable and convenient air conditioner control system can be obtained.

A second aspect of the present invention provides a control device for an air conditioner, wherein a plurality of infrared sensors installed on the same plane for detecting infrared rays radiated by a human body, and the infrared rays are focused on the infrared sensors. Fresnel lens and infrared sensor output signal
A human body detection sensor consisting of an amplifier circuit for amplifying only the human activity frequency band in a signal analyzing means for analyzing the output signal of the human body detection sensor, the analysis result of the signal analysis unit, time zone body Accumulate detection data for a predetermined period
Behavior prediction means for predicting human behavior from the results ,
From the results of this behavior prediction means, it is predicted that the probability of existence of a person is high.
If it is supposed, it is configured to have a means for automatically starting operation, a wind direction control means for controlling the wind direction, an air flow control means for controlling the air flow, and a room temperature control means for controlling the set temperature, Without using a drive unit, the infrared sensor is arranged in parallel, the device can be inexpensive, the position of the human body can be easily detected, and the discomfort from turning on the power of the air conditioner to the steady state is eliminated, This has the effect of being released from troublesome timer setting operations.

The human body detecting sensor according to claim 3 is on the same plane.
A plurality of infrared detection elements installed on the top, in the human body detection sensor to detect the presence of the human body by detecting infrared light emitted from the human body, and partially overlap the detection range of the plurality of detection elements, Since the number of detection areas is larger than the number, the number of detection areas can be larger than the number of infrared detection elements. Further, since the number of elements is small, the number of parts can be reduced, the cost can be reduced, and the size and weight can be reduced. Effects such as improvement in reliability are obtained.

[0076] human body detection sensor according to claim 4, the human body is congestion
A plurality of red <br/> external sensor installed on the same plane for detecting the infrared rays morphism, a Fresnel lens for condensing the infrared ray to the infrared sensor, in the output signal from the infrared sensor
An amplification circuit that amplifies only the human activity frequency band , a fixture that attaches a human body detection sensor to the air conditioner, and a human body detection area
Sly <br/> is de Fresnel lens laterally to allow change, and the guide grooves to stabilize, the Fresnel lens scan
Since the structure provided with a stop portion for stopping the ride,
The rotation mechanism and rotation space of the human body detection sensor become unnecessary, and the design is improved.

[0077] The air conditioner according to claim 5 includes a plurality of infrared sensors installed on the same plane for detecting infrared rays;
A Fresnel lens that focuses infrared light on the infrared sensor, and a human activity frequency band in an output signal of the infrared sensor.
A human body detection sensor consisting of an amplification circuit that amplifies only
From the output signal of the human body detection sensor, the non-detection time period
Since the configuration is provided with the number-of-people determining means for determining the number of people, there is an effect that the configuration of the human body detection sensor can be simplified and inexpensive.

An air conditioner according to claim 6 is the air conditioner according to claim 5.
Since the air conditioner is provided with the wind direction control means for controlling the wind direction based on the number of people determined by the number of people determination means, and the air volume control means for controlling the air volume, the air conditioning comfort is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control device for an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a control flowchart of the first embodiment of the present invention.

FIG. 3 is a front view showing a position detecting unit according to the first embodiment of the present invention.

FIG. 4 is a side sectional view showing a position detecting means according to the first embodiment of the present invention.

FIG. 5 is a horizontal sectional view showing a position detecting unit according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram showing the position detecting means according to the first embodiment of the present invention mounted thereon.

FIG. 7 is a characteristic diagram of the position detecting means according to the first embodiment of the present invention.

FIG. 8 is a front view illustrating a control device for an air conditioner according to a second embodiment of the present invention.

FIG. 9 is a front view showing a human body detection sensor according to Embodiment 2 of the present invention.

FIG. 10 is a side sectional view showing a human body detection sensor according to Embodiment 2 of the present invention.

FIG. 11 is a horizontal sectional view showing a human body detection sensor according to Embodiment 2 of the present invention.

FIG. 12 is an explanatory plan view showing a detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 13 is an explanatory front view showing a detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 14 is an explanatory side view showing a detection area of the human body detection sensor according to the second embodiment of the present invention.

FIG. 15 is a control block diagram according to a second embodiment of the present invention.

FIG. 16 is a flowchart of a human body detection sensor according to Embodiment 2 of the present invention.

FIG. 17 is an output waveform diagram showing a human body detection sensor according to Embodiment 2 of the present invention.

FIG. 18 is an explanatory diagram of position determination of the human body detection sensor according to the second embodiment of the present invention.

FIG. 19 is a control flowchart according to Embodiment 3 of the present invention.

FIG. 20 is an explanatory diagram summarizing the number of times of detection by the human body detection sensor according to Embodiment 3 of the present invention.

FIG. 21 is an explanatory diagram showing a human body detection sensor according to Embodiment 4 of the present invention.

FIG. 22 is a structural diagram showing a human body detection sensor according to Embodiment 4 of the present invention.

FIG. 23 is a characteristic diagram of a human body detection sensor according to Embodiment 4 of the present invention.

FIG. 24 is an explanatory diagram of human arrangement estimation obtained by using a human body detection sensor according to Embodiment 4 of the present invention.

FIG. 25 is an operation flowchart of Embodiment 4 of the present invention.

FIG. 26 is a structural diagram showing a human body detection sensor according to Embodiment 5 of the present invention.

FIG. 27 is a structural diagram showing a human body detection sensor according to Embodiment 6 of the present invention.

FIG. 28 is a front view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 29 is a side view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 30 is a horizontal sectional view showing a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 31 is an explanatory diagram showing a human body detection area of a human body detection sensor according to Embodiment 7 of the present invention.

FIG. 32 is an explanatory diagram showing a human body detection area when a human body detection sensor according to Embodiment 7 of the present invention is installed indoors.

FIG. 33 is a front view of an air conditioner equipped with a human body detection sensor according to Embodiment 10 of the present invention.

FIG. 34 is a front view, a vertical sectional view, and a horizontal sectional view showing the configuration of a human body detection sensor according to Embodiment 10 of the present invention.

FIG. 35 is a control configuration block diagram of a human body detection sensor according to Embodiment 10 of the present invention.

FIG. 36 is a flowchart of non-detection time detection showing a flow of signal processing of the human body detection sensor according to Embodiment 10 of the present invention.

FIG. 37 is a flowchart of the number of people determination showing the flow of signal processing of the human body detection sensor according to the tenth embodiment of the present invention.

FIG. 38 is a diagram showing the presence or absence of a person for one minute and the elapsed time of the human body detection sensor according to the tenth embodiment of the present invention.

FIG. 39 is a flowchart showing a specific operation control of an air conditioner using a human body detection sensor according to Embodiment 10 of the present invention.

FIG. 40 is a diagram showing the result of discriminating the number of persons obtained by combining the left and right infrared sensors 1a and 1b of the air conditioner according to Embodiment 10 of the present invention.

FIG. 41 is a block diagram showing a conventional control device for an air conditioner.

FIG. 42 is a control flowchart of FIG. 41.

FIG. 43 is a sectional view showing a human body detection sensor according to a second conventional example.

FIG. 44 is a front view of an air conditioner including a human body detection sensor according to a third conventional example.

FIG. 45 is a front view showing a human body detection sensor according to a third conventional example.

FIG. 46 is a horizontal sectional view showing a human body detection sensor according to a third conventional example.

FIG. 47 is an explanatory diagram showing a state in which an air conditioner equipped with a human body detection sensor according to a third conventional example is installed.

FIG. 48 is a side sectional view showing a human body detection sensor according to a fourth conventional example.

[Explanation of symbols]

 2b Main control means 2c Set temperature changing means 2g Wind speed changing means 3 Human body detection sensor L3 Infrared sensor L R3 Infrared sensor R 10 Fresnel lens 10a Lens stop concave part 10b Lens stop convex part 12 Position detecting means 13 Amplifier circuit 14a Guide groove 15 Mounting fixture 20a Signal analysis means 20b Estimation means 24 Wind direction control means 26 Room temperature control means

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiko Fukuda 2-14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Living System Laboratory (72) Inventor Koji Iio 3-181, Oka, Shizuoka-shi Mitsubishi Electric Inside Shizuoka Works, Ltd. (72) Inventor Hidenori Shigurogi 3-181-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works, Ltd. (56) References JP-A-2-213635 (JP, A) 1-1121647 (JP, A) JP-A-3-225143 (JP, A) JP-A-4-64848 (JP, A) JP-A-2-68439 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24F 11/02

Claims (6)

(57) [Claims] 1. An infrared sensor having a predetermined infrared detection area is arranged on the same plane so as to partially overlap the detection area so as to detect the position of the human body. Position detecting means for detecting a distance from the output intensity, and a set temperature changing means for changing a set temperature; a wind direction and a wind speed changing means for changing a blowing direction and a blowing speed; and That you have entered
If it is detected, the set temperature changing means and the wind direction and wind speed changing means blow strong cold air or hot air to the position where the human body exists.
Control device for an air conditioner, wherein the main control means for controlling, that was provided to emit. Wherein the human body to detect the infrared rays to radiation Ippei
A human body detection sensor comprising a plurality of infrared sensors installed on a surface, a Fresnel lens for condensing infrared rays on the infrared sensor, and an amplifier circuit for amplifying only a human activity frequency band in an output signal of the infrared sensor. And signal analysis means for analyzing an output signal of the human body detection sensor; and, based on an analysis result of the signal analysis means , a time-dependent human body detection data.
Behavior prediction means for accumulating data for a predetermined period of time and predicting the behavior of a person from the result.
A means for automatically starting operation when envisaged; a wind direction control means for controlling a wind direction; an air flow control means for controlling an air flow; and a room temperature control means for controlling a set temperature. Air conditioner control device. 3. A human body detection sensor comprising a plurality of infrared detection elements installed on the same plane and detecting infrared rays emitted from a human body to detect the presence of a human body, wherein the detection range of the plurality of detection elements is partially changed. A human body detection sensor which is superimposed and has a larger number of detection areas than the number of the detection elements. 4. The same human body to detect the infrared rays to radiation Ippei
Multiple infrared sensors installed on a surface, a Fresnel lens that focuses infrared light on the infrared sensor, and the human activity frequency band in the output signal from the infrared sensor
An amplification circuit that amplifies only the human body, a fixture that attaches the human body detection sensor to the air conditioner, and a Fresnel lens to change the human body detection area
A human body detection sensor, comprising: a guide groove that slides and stabilizes in a lateral direction ; and a stop portion that stops sliding of the Fresnel lens. 5. A plurality of infrared sensors installed on the same plane for detecting infrared light, a Fresnel lens for condensing infrared light on the infrared light sensor, and only a human activity frequency band in an output signal of the infrared light sensor. Sensor that consists of an amplifier circuit that amplifies the signal, and the output signal of this sensor detects the length of non-detection time.
An air conditioner, comprising: means for determining the number of people based on the number of persons. By 6. is determined from human number determination unit number, and direction control means for controlling the air direction so long time direct the wind in the direction of multiplayer, the case of small flow rate increases in the case of multiplayer air volume The air conditioner according to claim 5, further comprising: air volume control means for controlling an air volume so as to decrease the air volume.