JP3045904B2 - Human body detection device, air conditioner and display device of 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 a human body detecting device for detecting the position of a human body using an infrared sensor, an air conditioner using the human body detecting device, and a display device of the air conditioner.

[0002]

2. Description of the Related Art FIG. 19 is a perspective view of a conventional human body detection device 1 disclosed in, for example, Japanese Patent Application Laid-Open No. 2-213635. Numeral 16 designates an infrared sensor U on the upper side for detecting the position of a distant person.
Reference numeral 7 denotes a lower infrared sensor L for detecting a nearby person. The two infrared sensors are arranged vertically, and the human body detection areas 14 partially overlap, but the detection directions are different. Reference numeral 18 denotes a scanning plate which is reciprocated in the horizontal direction. An infrared sensor U16 is attached to the tip of the scanning plate, and an infrared sensor L17 is provided immediately below the scanning plate. The scanning plate is reciprocated in the horizontal direction by a scanning motor 19. 20 is the scanning plate 18
The number of the slits 20 is set so that the infrared sensors U and L can detect the direction when the infrared sensors U and L are detecting a human body by each slit 20 and the photo interrupter 21. The necessary range for detection is specifically set equally in nine slits 20.

FIG. 20 illustrates the operation with reference to the overall circuit configuration diagram. In this figure, 24 is a microcomputer, 25 is a CPU, 7 is an input circuit, 11 is a memory, 12
Is a timer, and 13 is an output circuit. To the input circuit 7, a signal of a photo interrupter 21 for detecting the position of the scanning plate 18, a signal of a micro switch A22 for detecting the position of the wind direction louver, a signal of a micro switch B23 for detecting the position of the rotating louver, and an infrared sensor U16 And an output signal from an amplifier circuit for amplifying a signal of the infrared sensor L17. The output signals of the two infrared sensors and the output signal of the photointerrupter 21 for outputting the detection directions of the infrared sensors are subjected to arithmetic processing by the CPU 25 to obtain the position of the human body. The operation control signals of the wind direction louver motor 27 and the rotating louver motor 28 for controlling the wind direction and the fan motor 29 for controlling the air flow are transmitted from the output circuit 13. The wind direction louver motor 27 and the rotating louver motor 28 receive a control signal from the output circuit 13 and direct the wind direction to the direction where a person exists. In addition, the fan motor 29 also controls the air flow to be strong when a person is far from the air conditioner, to a weak air flow when the person is near, and to a medium air flow in the middle from the air conditioner.

(Conventional Example 2) FIG. 21 is a sectional view showing a display device of a conventional air conditioner disclosed in, for example, Japanese Utility Model Laid-Open No. 1-136827.
FIG. 22 is a perspective view of a main part. In the figure, 101 is a panel, 102 is a decorative board, 103 is a display substrate, 104 is a display portion provided on the display substrate 103, 105 is a main body, 106
Denotes an elastic member, 107 denotes a display holder, 108 denotes an electric component housing, 109 denotes a hole provided in the electric component housing 108, 1
10 is a mounting piece provided on the display holder 107, 110, 1
Reference numeral 11 denotes a screw, 112 denotes a locking piece provided on the display holder 107, and 113 denotes a claw provided on the display holder 107.

Next, the operation will be described. Display substrate 10
After the elastic member 106 is housed in the display holder 107, the display member 3 is fixed on the elastic member 106 by the locking pieces 112 and the claws 113. The display holder 107 includes a mounting piece 110 and a screw 111.
Then, it is fixed to the electric component accommodating section 108 with the screw 110 and mounted on the main body 105. The decorative plate 102 is attached to the panel 101 and is mounted over the main body 105.

[0006]

(Conventional Example 1) Since the conventional human body detection device is configured as described above, in order to detect the position of the human body, the infrared sensor must be rotated by a motor to rotate. did not become. As described above, when the infrared sensor is rotationally driven by the motor, the infrared sensor vibrates and malfunctions, and the human body detection method and configuration are complicated, the human body detection device becomes large, and the cost increases. was there.

[0007] In addition, the wind direction is directed to the direction where a person is,
Since the air volume is changed depending on the distance from the air conditioner, there are problems such as that the cold and hot air is always blown directly toward the person, which is very unpleasant.

(Conventional Example 2) Since the conventional display device is configured as described above, the position between the decorative plate attached to the panel and the display portion of the display substrate attached to the display holder absorbs assembly variations. There was a problem that alignment was incomplete without being able to do so.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and detects the direction in which a human body exists and the distance from an air conditioner to a person without rotating an infrared sensor by a motor. It is an object of the present invention to obtain a low-cost human body detection device which has a simple structure.

It is another object of the present invention to provide a human body detecting device capable of detecting the position of a human body and the floor temperature without rotating an infrared sensor by a motor.

It is another object of the present invention to provide an air conditioner that can change the wind direction and air volume around a person based on the output result of the human body detection sensor to realize comfortable air conditioning.

Still another object of the present invention is to provide a display device of an air conditioner in which the display unit of the air conditioner is movable so as to absorb variations in assembly and complete alignment.

[0013]

A human body detecting device according to the present invention comprises a light collecting means for collecting infrared rays radiated from a human body detection area where a human body is present, and a light collecting means for collecting infrared light from different directions. a plurality of infrared detection means for detecting the infrared rays, respectively, and a determination means for determining the position of the human body by the voltage and frequency of the output signal of the infrared detection means, the condensing means, the plurality of light converging portions Is hemisphere and hem
The distance between the vertices of the hemispherical portion is set to be equal to or less than the diameter of the hemispherical portion .

Further , the light collecting means has a refraction light condensing window for dividing infrared light to be condensed, and the refraction light condensing window changes an area in accordance with a corresponding human body detection area to freely change detection sensitivity.
It was made .

Further, the condensing means has a refractive condensing window to split the infrared radiation condensed refractive condensing window changes the thickness according to the corresponding human body detection region, freely change of the detection sensitivity
It was made.

Further , the light-collecting means has a light-collecting portion composed of a hemispherical portion and a hem portion, and a human body detecting means corresponding to a radius of the hemispherical portion and an angle formed between a contact point between the hemispherical portion and the hem portion and the center of the hemispherical portion. It can be selected according to the area.

[0017]

Also, provided between the light collecting portions of the light collecting means,
An infrared discriminating means which does not transmit arc-shaped infrared rays conforming to the shape of the light condensing means is provided.

Further, a light collecting means for collecting infrared rays radiated from a human body detection area where a human body is present, an infrared light detecting means for detecting infrared light collected by the light collecting means, and an infrared light detecting means for detecting the infrared light. Determining means for determining the position and floor temperature of the human body from the result, and shielding means for shielding the detection area for each detection area, thereby limiting the input of infrared radiation radiated from the detection area to the infrared detection means for each detection area , Focusing means
Indicates that the multiple condensing parts consist of a hemisphere and a hem,
Are set to be equal to or less than the diameter of the hemisphere .

An air conditioner according to the present invention comprises: a light collecting means for collecting infrared light radiated from a human body detection area where a human body is present; an infrared light detecting means for detecting infrared light collected by the light collecting means; Determining means for determining the position of the human body and the floor temperature based on the result detected by the infrared detecting means; and shielding the infrared detecting means for each detecting area to limit the incoming light of infrared rays radiated from the detecting area for each detecting area. includes a human body detecting device comprising a shielding means, and a wind direction control means for controlling the air direction from the output result of the human body detection device, and the air volume control means for controlling the air flow from the output result of the human body detection device, a current
In the light means, the plurality of light condensing parts comprise a hemispherical part and a hem part,
The distance between the vertices of the hemisphere is smaller than the diameter of the hemisphere .

The display device of an air conditioner according to the present invention,
In an air conditioner having a human body detection device and a display device,
The human body detection device includes an engagement hole that fits with an appropriate gap to an engagement piece provided in the air conditioner main body, and an elastic member that deforms in the front-rear direction with respect to the main body on the back of the mounting portion. It is a thing.

Also, the mounting portion of the human body detecting device and the mounting portion of the display device are integrated, and the mounting portion of the display device is provided with an engaging piece. It is provided with an engagement hole to be fitted and fitted.

The human body detecting device according to the present invention is characterized by
Analyzes the signals captured from the human body detection device.
Analysis means and the position of the human body based on the results of the analysis means.
Estimating means for performing the determination.

Also, the boundary where the output signal of the human body detecting device exists
The output signal is greater than the boundary value.
If so, the time t1 of the maximum point of the output signal and the time t of the minimum point
By calculating the approximate period from the difference between the two, the frequency
Calculate and determine the distance of the human body from the air conditioner
It is.

Further, the viewing angle of the human body detection area is set to
Make it narrow for the body detection area, and
The light condensing means is designed to be wider.
You.

Further, the human body detection area is reduced according to the detection distance.
It is something to lose.

[0027]

The human body detecting device according to the present invention has a simple structure and can be manufactured at low cost, can accurately detect the position of the human body even in a small area, and can determine the distance between the vertices of the hemispherical portion.
Blind spot within the detection area
I do.

Also, the refraction light condensing window corresponds to the corresponding human body detection area.
The detection sensitivity can be changed freely by changing the area according to
Can be

Further , the refraction light condensing window corresponds to the corresponding human body detection area.
The thickness can be changed according to the sensitivity, and the detection sensitivity can be changed freely.
be able to.

The radius of the hemisphere and the contact between the hemisphere and the skirt
Human body detection area corresponding to the angle between the point and the center of the hemisphere
Can be selected according to
Optimal design of the optical system according to the knowledge region can be easily performed.

[0031]

Also, an arc-shaped red shape following the shape of the light collecting means.
Accurate human body by infrared discrimination means that does not transmit outside lines
Detection can be performed.

Further, the position of the human body and the floor temperature are determined based on the result detected by the infrared detecting means, and the detection of the infrared rays radiated from the detecting area to the infrared detecting means is limited for each detecting area by shielding each detecting area. Therefore, the configuration can be made simple and inexpensive, and the position of the human body can be accurately detected even in a small area. Also, the distance between the vertices of the hemisphere
By reducing the diameter to less than the diameter, the blind spot in the detection area is reduced.
You.

The air conditioner according to the present invention is capable of detecting a human body.
The wind that controls the wind direction from the output result of the device and the human body detection device
Direction control means and air volume control based on the output result of the human body detection device
Air flow control means that is simple and inexpensive.
Can accurately detect the location of the human body even in small areas.
You. Also, make the distance between the vertices of the hemisphere part equal to or less than the diameter of the hemisphere part.
By doing so, the blind spot in the detection area is reduced.

Display device for air conditioner according to the present invention
Can move the human body detection device and the display device, absorb variations in assembly, obtain perfect alignment, and obtain a highly accurate device.

Also, the human body detecting device and the display device can be moved.
To absorb variations in assembly and complete alignment
And a highly accurate one can be obtained.
You.

The human body detecting device according to the present invention is
Analyzes the signal taken from the intelligence device and analyzes the result.
The position of the human body is estimated from the result.

Further, the output signal of the human body detecting device is equal to or less than the boundary value.
If it is above, calculate the frequency of the output signal and adjust the air condition of the human body.
Judge the distance from the Japanese machine.

Also, the viewing angle of the human body detection area is set to
Make it narrow for the body detection area, and
By making it wider, the detection frequency
The difference increases, and the accuracy of distance detection is improved.

Further, the human body detection area is reduced according to the detection distance.
By eliminating the change, the frequency change becomes remarkable,
The degree is better.

[0041]

[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a plan view of the human body detection device 1. In FIG. 1, reference numeral 2 denotes a left infrared sensor that mainly detects infrared rays from the left, and reference numeral 3 denotes a right infrared sensor that mainly detects infrared rays from the right. Reference numeral 4 denotes a light condensing unit that condenses infrared light on the left infrared sensor 2 and the right infrared sensor 3 from left, right, and center directions. Reference numeral 5 denotes an infrared discriminating means for preventing the incidence of infrared light from areas other than the human body detection area due to irregular reflection, defocus, or the like. 6 is a human activity frequency band (1H) in the output signal of the infrared sensor.
The amplification circuit 7 amplifies only the infrared signal (about z), and a frame 7 for fixing the infrared sensor, the condensing means 4 and the amplification circuit 6.

FIG. 2 is a plan view (a), a front view (b), and a side view (c) of the light collecting means of the human body detecting device 1. Reference numeral 4 denotes a left and right and a center 3 for the left infrared sensor 2 and the right infrared sensor 3.
It is a light condensing means for condensing infrared light from a direction, and includes a left light condensing part 4a for condensing light toward the left infrared sensor 2 and a right light condensing part 4b for condensing light toward the right infrared sensor 3. The left and right light condensing parts include a hemispherical part 4c and a foot part 4d. The hemispherical portion 4c is an aggregate of six refraction light condensing windows 4e corresponding to a human body detection region that refracts and transmits infrared light and condenses it.
Therefore, the light condensing means has a total of 12 refraction light condensing windows 4e in the left and right light condensing portions. The six refraction light collection windows 4e of the left light collection part 4a collect the infrared light collected from the human body detection area on the left infrared sensor 2. In addition, the six refraction light collection windows 4c of the right light collection unit 4b collect the infrared light collected from the human body detection area on the right infrared sensor 3. The shape of the light condensing means 4 is a shape in which single hemispherical right and left light condensing parts are juxtaposed so that the distance between the centers is equal to or less than the diameter in order to enhance the ability of condensing infrared light to the infrared sensor. The skirt 4d is for fixing the light collecting means 4 to the box frame 7, and has a fixing hole 4f for fixing. By firmly fixing the light collecting means 4 with the fixing holes 4f of the skirt 4d, the accuracy of the focal length between the light collecting means 4 and the infrared sensor is improved.

FIG. 3 is a control block diagram of the human body detecting device 1 showing the configuration of the first embodiment. 8 is an input circuit for interfacing the output signal of the amplifier circuit 6 with the A / D converter, 9 is an A / D converter for A / D converting the output signal of the human body detection device 1, and 10 is the output signal of the human body detection device 1. The determination section for determining the position of the person includes an analyzing means 10a for analyzing the captured signal, and an estimating means 10b for estimating the position of the human body from the result of the analyzing means. 11
Is a memory for storing the date and time and place where the human body was detected, and 12 is a timer for counting the current time.

FIGS. 4A and 4B are a light distribution diagram showing a detection direction when an air conditioner equipped with the human body detection device 1 showing the configuration of this embodiment is installed in a room, and FIG. is there. Reference numeral 14 denotes a human body detection area A14a, a human body detection area B14b, a human body detection area C14c, and a human body detection area D14 which indicate a human body detection position where the human body detection device 1 can detect a human body.
d, human body detection area E14e, human body detection area F14f, human body detection area G14g, human body detection area H14h, human body detection area I14i, human body detection area J14j, human body detection area K
14k and a human body detection area L14L.

The human body detection areas A, B, C, D, E and F indicate the areas where the left infrared sensor 2 can detect the human body, and the human body detection areas G, H, I, J, K and L are the right infrared sensor 3 Indicates an area where a human body can be detected. The human body detection areas B and H, the human body detection areas D and J, and the human body detection areas F and L are superimposed so that they can be detected by both infrared sensors. The viewing angle of each of the human body detection areas is 15.

FIG. 5 is a flowchart of the human body position detection showing the flow of the waveform processing of the human body detection device 1 of the present invention. FIG. 6 shows an output signal of the left infrared sensor and an output signal of the right infrared sensor when the human body detection device 1 in this embodiment detects a human body. FIG. 7 is a diagram showing a determination table of a human body existing position by waveform processing of an output signal of the human body detection device 1 in this embodiment.

Next, the operation will be described with reference to FIGS. 4, 6 and 7 in accordance with FIG. In step 201, the left infrared sensor 2 and the right infrared sensor 3 perform a human body detection operation on the detection area shown in FIG. If the infrared sensor has detected a human body in step 202, the process proceeds to step 203, and if not, step 201 is repeated. In the human body detection method, for example, as shown in FIG. 6, when the output signal of the human body detection device 1 is equal to or more than a certain boundary value (Vthd), it can be determined that a human body has been detected. Alternatively, the difference between the current data of the output signal of the human body detection device 1 and the previous data is obtained, and it can be determined whether the difference is equal to or greater than a certain boundary value.

In step 203, it is determined whether or not the left infrared sensor 2 has detected a human body. Then, in step 204, L = 1 if detected, and L = 0 if not detected. In step 205, it is determined whether the right infrared sensor 3 has detected a human body.
Then, when it is detected in step 206, R =
2, and if no detection is made, R = 0. next,
In step 207, it is determined whether or not the output signal of the human body detection device 1 is equal to or greater than a certain boundary value (Pthd). If the output signal is equal to or larger than Pthd, in step 208,
The frequency of the output signal is determined. The frequency of the output signal is
It can be calculated by calculating an approximate cycle from the difference between the time t1 of the maximum point and the time t2 of the minimum point in FIG. By determining the frequency, the distance from the air conditioner can be determined.

For example, as shown in FIG. 4, the air conditioner has four human body detection areas 14 in a short distance area, four in a long distance area, and four in the middle. Human body detection area 14 in the center direction
Overlap so that they can be detected by the left and right human body detection sensors. The viewing angle 15 of each human body detection area 14 is constant. Therefore, the human body detection area 14 is narrow at a short distance, and wide at a long distance. At this time, as shown in FIG. 4B, when a person is far from the air conditioner, a signal is output intermittently from the infrared sensor.
The frequency of the detection signal decreases. When a person is present near the air conditioner, a signal is continuously output from the infrared sensor, and the frequency of the detection signal increases. In addition, when the light collecting means 4 is designed so that the viewing angle 15 of the human body detection area 14 is narrower for the human body detection area 14 at a short distance and wider at the human body detection area 14 at a long distance. The difference in frequency increases, and the accuracy of distance detection improves.

Further, the human body detection area 14 is determined according to the detection distance.
When the number is reduced, the change in the frequency becomes remarkable, and the detection accuracy is further improved.

Then, it is determined whether or not the calculated frequency is equal to or less than a certain boundary value (fthd). If the calculated frequency is equal to or lower than fthd, DIS = 0 is set. If the calculated frequency is equal to or higher than fthd, DIS = 1 is set in step 209 when the output signal is equal to or higher than Pthd,
When the output signal is equal to or lower than Pthd, DIS = 0.

Therefore, DIR (sum of L and R) and DIS
The following can be detected from the value of. When both sensors detect at the same time, the person exists in the center direction where both detection areas overlap, and the left direction when only the left infrared sensor 2 is detected and the right direction when only the right infrared sensor 3 is detected. Can be regarded as a person. If the output is greater than Pthd and the frequency of the output signal is equal to or higher than fthd and is in the frequency band of the person, it can be considered that a person exists near the air conditioner. Therefore, as shown in FIG. 7, 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, at step 210, the DIR
(The sum of L and R), the data of DIS, and the date and time when the human body was detected are stored in the memory 11.

The human body detecting apparatus according to the first embodiment has a simple configuration and can be manufactured at a low cost, and can accurately detect an area where a human body exists in a small area.

Although two infrared sensors are provided in the above embodiment, a plurality of infrared sensors may be provided.

In the above embodiment, the light collecting means is provided with twelve human body detection areas 14. However, the area is not particularly limited, and the method of combining the hemispherical parts is free. Alternatively, they may be combined in a plane.

In the above embodiment, the condensing means has a single radius. However, the condensing means does not have to have a single radius.

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In the light condensing means 4 of the human body detecting device 1, by changing the area of the refraction light condensing window 4e obtained by dividing the light condensing means 4 for condensing infrared light, it is possible to change the amount of incident infrared light. For example, when the human body detection device is installed on a wall, the human body detection regions A, B, G, and H at short distances, the human body detection regions C, D, I, and J at medium distances and the human body detection regions E, F, and at long distances. The ratio of the distance to the center of K and L is 2: 4: 8. When the area ratio of the refraction light condensing window 4e is 1: 1: 1,
The detection sensitivity is the reciprocal of the distance and is 4: 2: 1. However, when the area ratio of the refraction light condensing window 4e is increased at an area ratio of the refraction light condensing window 4e of 1: 2: 4, the detection sensitivity is almost the same at far, middle, and short distances. Therefore, the detection sensitivity can be freely changed by changing the area of the refraction light collection window 4e. Also, the detectable distance can be set freely according to the area to be detected.

The human body detecting device of the second embodiment can easily make the light collecting means compact and optimally design an optical system according to the detection area.

Embodiment 3 FIG. Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. In the light collecting means 4 of the human body detecting device 1, the incident amount of infrared light can be changed by changing the thickness of the refraction light collecting window 4e obtained by dividing the light collecting means 4 for collecting infrared light. For example, assuming that the area of the refraction light condensing window 4e is constant, the detection sensitivity decreases according to the incident angle of infrared rays and the cosine law. That is, the detection sensitivity of the human body detection area A14a is lower than that of the human body detection area B14b by cos60 ゜ (1
/ 2) times. Therefore, if the material of the light condensing means is polyethylene, uniform detection sensitivity can be obtained by setting the thickness of the human body detection area A14a to about 0.5 mm with respect to the thickness of 1 mm of the refraction light collection window 4e for detecting the human body detection area B14b. . Therefore, the detection sensitivity can be freely changed by changing the thickness of the refraction light condensing window 4e.
Also, the detectable distance can be set freely according to the area to be detected.

The human body detecting apparatus of the third embodiment can easily make the light collecting means compact and optimally design the optical system according to the detection area.

Embodiment 4 FIG. Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG. When the angle θ between the contact point between the hemispherical portion 4c and the skirt portion 4d and the center of the hemispherical portion 4c is increased in the light condensing means 4 of the human body detecting device, the human body detection region 14 is expanded. When the angle θ is reduced, the human body detection area 14 becomes smaller. When the radius of the hemispherical portion 4c is reduced while the angle θ is kept as it is, the human body detection area 14 can be widened, and when the radius is large, the human body detection area 14 can be narrowed. Therefore, the size of the light condensing means 4 and the human body detection area 14 can be freely designed based on the angle θ and the radius.

In the human body detecting apparatus according to the fourth embodiment, the compactness of the light condensing means and the optimal design of the optical system according to the detection area can be easily performed.

Embodiment 5 FIG. Hereinafter, a fifth embodiment of the present invention will be described with reference to FIGS. In the human body detecting device 1, the light collecting means 4 collects infrared rays from the human body detection region 14 in the left, right, and center directions by two left and right independent light collecting units. Human body detection area A,
B, C, D, E, and F are areas where the left infrared sensor 2 can detect a human body, and human body detection areas G, H, I, J, K, and L are areas where the right infrared sensor 3 can detect a human body. The human body detection areas B and H, the human body detection areas D and J, and the human body detection areas F and L are superimposed so that they can be detected by two infrared sensors. The two light-collecting portions have a hemispherical shape in order to collect infrared light from a wide range and to increase the light-collecting efficiency. The condensing means 4 has a distance between the vertexes of the two condensing portions less than or equal to the diameter of the hemispherical portion 4c, and has a two-hump shape. Therefore, the displacement of the superimposition of the human body detection regions 14 in the center direction can be reduced, and the superimposed human body detection regions 14 can be changed according to the distance between the vertices of the two light collecting portions. Therefore, it is possible to accurately determine the position of the person in the three directions of left, right, and center by using the two infrared sensors.
In the above-described embodiment, the case where two light collecting units are arranged in parallel has been described. However, a plurality of light collecting units may be arranged in parallel.

The human body detecting device according to the fifth embodiment can reduce the blind spot in the detection area.

Embodiment 6 FIG. Hereinafter, a sixth embodiment of the present invention will be described with reference to FIG. In the human body detecting device 1, the light condensing means 4 is composed of a plurality of refraction light condensing windows 4 e for condensing light only on the left infrared sensor 2 and a plurality of refraction light condensing light only on the right infrared sensor 3. It comprises a right light condensing part 4b composed of a window 4e.
An arc-shaped infrared discriminating means 5 is provided between the right and left light condensing portions, the arc-shaped infrared discriminating means 5 conforming to the shape of the light condensing means 4. The infrared discriminating means may be made of a material that does not transmit infrared rays, such as acrylic, and may be blackened and blackened to prevent reflection. Even when irregular reflection, defocusing, or the like occurs, the infrared discriminating means 5 prevents the incidence of infrared light from areas other than the predetermined human body detection area 14. As a result, the detection accuracy is improved, and accurate human position detection can be performed.

The human body detecting device according to the sixth embodiment can perform accurate human body detection.

Embodiment 7 FIG. Hereinafter, a seventh embodiment of the present invention will be described. FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the air conditioner which mounts the human body detection sensor which shows the structure of this invention. In FIG. 8, 31 is a human body detection sensor, 32 is an air conditioner, 33 is a wind direction changing wing for changing the wind direction, and 34 is an outlet.

FIG. 9 is a front view (a), a vertical sectional view (b), and a horizontal sectional view (c) of the human body detection sensor. In FIG. 9, reference numeral 31 denotes a human body detection sensor, which is disposed horizontally, an infrared sensor 31a for detecting infrared rays, a light condensing means 31b for condensing infrared rays radiated from the detection area to the infrared sensor 31a, and shielding for each detection area. The infrared sensor 31a
Means 31c for limiting the input of infrared rays radiated from the detection area to each detection area, an amplification circuit 31d for amplifying the output signal of the infrared sensor 31a, a frame for fixing the infrared sensor 31a and the condensing means 31b, and the amplification circuit 31d. 31
c, a mounting jig 31f for installing the human body detection sensor in the air conditioner.

FIGS. 10A and 10B are light distribution diagrams showing the detection direction when an air conditioner equipped with a human body detection sensor showing the structure of this embodiment is installed indoors, FIG. 10B is a front view, and FIG. (C) It is a side view. 31 is a human body detection sensor, 32
Is an air conditioner, 35 is a human body detection area A35a, a human body detection area B35b, a human body detection area C35c, and a human body detection area D that indicate a human body detection direction in which the human body detection sensor can detect a human body.
35d, human body detection area E35e, human body detection area F35f
6 areas.

FIG. 11 is a control block diagram of a human body detection sensor showing the configuration of this embodiment. 37 is an input circuit for interfacing the output signal of the amplifier circuit with the A / D converter, 38 is an A / D converter for A / D converting the output signal of the human body detection sensor, and 39 is a human being based on the output signal of the human body detection sensor 31. A determination unit for determining the presence position and temperature, an analysis unit 39a for analyzing the captured signal, and an estimation unit 3 for estimating the presence position and the floor temperature of the human body from the result of the analysis unit.
9b. Reference numeral 40 denotes a memory for storing data obtained by detecting a human body; 41, a timer for counting the current time; 42, an output circuit for interfacing the determination unit 39 with each control means; and 43, a wind direction for controlling the wind direction based on the result of the estimation means. Control means, 14 is an air volume control means for controlling the air volume, and 15 is a room temperature control means for controlling the set temperature.

FIG. 12 is a flowchart of the human body position detection by the human body detection sensor of this embodiment. Next, FIG.
The operation will be described with reference to FIG. In the detection area shown in FIG. 10, the human body detection and the floor temperature detection are simultaneously performed by the infrared sensor 31a. First, in step 301, 0 is set to X.
And perform initial setting of detection start. Step 302
, X is incremented by one. Step 3
In 03, which area is detected from the value of X is selected. When X = 1, in step 304, the infrared rays radiated from the human body detection area A35a are transmitted using the shielding means, and the incoming light of the infrared rays radiated from other areas is shielded.
For example, as shown in FIG. 10, if there are six human body detection areas using an electronic shutter as the shielding means, all infrared rays radiated from the human body detection areas B35b, C35c, D35d, E35e, and F35f are shielded, and the human body detection area is blocked. A35a
By transmitting only infrared rays radiated from the body, it is possible to perform human body detection and floor temperature detection only in the human body detection area A35a.

In step 305, it is determined whether a human body has been detected. If a human body is detected from the output result of the infrared sensor, 1 is substituted for P [1] in step 306. If not detected, 0 is substituted for P [1] in step 309. Therefore,
When P [1] = 1, a person is present in the human body detection area A.

Next, at step 307, it is determined whether or not X is 6 or more.
Returning to 02, X is incremented by 1 again, X = 2, and a human body detection operation is performed on the human body detection area B in the same manner as when X = 1. Therefore, the sensing operation is sequentially performed on the six human body detection areas A to F until X becomes 6 or more. Therefore, human body detection and floor temperature detection can be performed for six human body detection areas as shown in FIG. Then, when X becomes 6 or more, in step 308, the position of the human body and the floor temperature data are stored.

The human body detecting apparatus according to the seventh embodiment has a simple configuration and can be manufactured at low cost, and can accurately detect an area where a human body exists in a small area.

Embodiment 8 FIG. Hereinafter, an eighth embodiment of the present invention will be described with reference to FIG. First, in step 319, a human body detection operation is started. Then, in step 320, it is determined whether or not the human body detection sensor has detected a human body. If it is detected, in step 321, the set temperature Ti
The absolute value of the difference between the temperature and the room temperature Tr is calculated. If not, the operation is stopped in step 324. Next, in step 322, when the absolute value of the difference between the set temperature Ti and the room temperature Tr calculated in step 321 is, for example, 2 ° C. or more, automatic spot air-conditioning is performed and a strong nudge is performed in the direction in which a person exists. Ventilation is performed, and air conditioning is performed so that the difference between the set temperature and the room temperature is not felt so much.

In step 323, when the absolute value of the difference between the set temperature Ti and the room temperature Tr calculated in step 321 is less than 2 ° C., for example, energy-saving air conditioning is performed. In the area of the floor temperature, the air was blown with a weak nodge around the human body detection area where the temperature was the highest except for the area where the human body was present. so,
By blowing air with a weak nodge around the lowest temperature area, air conditioning that does not give a draft feeling to people using radiation is realized.

The air conditioner according to the eighth embodiment has a simple configuration and can be manufactured at low cost, and can accurately detect the position of a human body even in a small area.

Embodiment 9 FIG. Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings. FIG.
5 is a perspective view of a main part showing the structure of the display device of this embodiment, FIGS. 16 and 17 are sectional views of the main part, and FIG. 18 is a front view of the air conditioner. In the figure, reference numeral 115 denotes a mounting portion for mounting the human body detecting device 114 on the main body 118, 116 denotes a claw provided on the main body 118 for mounting the mounting portion 115,
Reference numeral 117 denotes a mounting hole provided with appropriate clearances in the vertical and horizontal directions with respect to the claw 116. Reference numeral 119 denotes a spring which deforms in the front-rear direction with the main body 118, and is formed so as to move in parallel with the main body 118. Reference numeral 120 denotes a mounting portion 11 for mounting a display holder 122 on which a display mounting substrate 121 is mounted.
5 are provided on the left and right of the LED 5, and the display mounting board 121 has LEDs electrically connected to the control unit of the air conditioner 118.
And the like. Reference numeral 125 denotes a mounting hole having an appropriate clearance at the top, bottom, left, and right with respect to each of the claws 120. Reference numeral 123 denotes a cylindrical portion for ensuring that the light of the display portion 124 reaches the design surface, and the outer periphery thereof is the panel 1.
27 is formed so as to fit into the display portion convex hole 128 provided in the display device 27. Reference numeral 129 denotes a concave portion for detecting a human body, into which the lens portion 126 of the human body detecting device 114 provided on the panel 127 is inserted. The outer periphery 130 is formed so as to position the human body detecting device 114.

Next, the operation will be described. As a method of mounting this device, first, the display substrate 121 having the display unit 124 is mounted on the display holder 122, and the left and right mounting holes 125 of the display holder 122 are inserted into the human body detecting device 1.
The right and left claws 120 provided on the fifteen mounting portions 116 are fitted and mounted. At this time, the display holder 122 is
It is possible to move up, down, left and right by the clearance between 25 and the claws 120.

Next, the mounting hole 11 provided in the mounting portion 116 of the human body detecting device 115 to which the display holder 122 has been mounted.
7 is inserted and fixed to the claws 116 of the main body 118. At this time, the human body detecting device 115 is
16 can be moved up, down, left and right by a clearance provided between the spring 11 and a spring 11 provided on the mounting portion 115.
9 always floats from the main body 118.

Next, the panel 127 is mounted. At this time, first, the lens portion 126 of the human body detecting device 114 is guided by the human body detecting concave portion 129 provided in the panel 127, and the assembling is performed by the clearance. Is corrected, the position is determined by the outer periphery 130 of the human body detecting concave portion 129, and set to a predetermined position and angle. At about the same time, the display portion convex hole 12 provided in the panel 127 is almost simultaneously.
8 guides the cylindrical portion 123 provided on the display holder 122, corrects the positional deviation due to the variation of the assembly, etc., by the clearance as in the case of the human body detection device 115, and is positioned and predetermined by the cylindrical portion 123 provided on the display holder 122. Set to position and angle.

The display device of the air conditioner according to the ninth embodiment enables the human body detection device and the display device to be movable, absorbs assembly variations and obtains a perfect alignment, and has a high accuracy. can get.

[0084]

As described above, the human body detecting apparatus according to the present invention includes a light collecting means for collecting infrared rays radiated from a human body detection area where a human body is present, and infrared light from different directions collected by the light collecting means. A plurality of infrared detecting means for detecting, and a judging means for judging a position of a human body based on a voltage and a frequency of an output signal of the infrared detecting means ;
The step has a plurality of light-collecting parts consisting of a hemisphere and a hem.
Since the distance between the vertices of the part is smaller than the diameter of the hemisphere part , the structure is simple and inexpensive, and the position of the human body can be accurately detected even in a small area, and the effect of reducing the blind spot in the detection area is reduced. Play.

[0085] Furthermore, the condensing means has a refractive condensing window to split the infrared radiation condensed the refractive condensing window changes the area according to the corresponding human body detection region, freely change the detection sensitivity
With this configuration, there is an effect that the size of the light condensing unit can be reduced and the optimal design of the optical system according to the detection area can be easily performed.

[0086] Furthermore, the condensing means has a refractive condensing window to split the infrared radiation condensed the refractive condensing window changes the thickness according to the corresponding human body detection region, freely change the detection sensitivity
With this configuration, there is an effect that the size of the light condensing unit can be reduced and the optimal design of the optical system according to the detection area can be easily performed.

[0087] Furthermore, the condensing means, the body of the condensing unit is composed of a hemispherical portion and a skirt portion, corresponding with the radius of the hemispherical portion, the angle between the center of the contact and the hemisphere part of the hemispherical portion and the skirt Since the configuration can be selected according to the detection area, there is an effect that the size of the light condensing unit can be reduced and the optimal design of the optical system according to the detection area can be easily performed.

[0088]

Further, it is provided between the condensing portions of the condensing means,
Since the configuration is provided with the arc-shaped infrared discriminating means conforming to the shape of the light condensing means that does not transmit infrared light , it is possible to perform an accurate human body detection.

Further, a light collecting means for collecting infrared rays radiated from a human body detection area where a human body is present, an infrared light detecting means for detecting infrared light collected by the light collecting means, and an infrared light detecting means for detecting the infrared light. Determining means for determining the position and floor temperature of the human body from the result, and shielding means for shielding the detection area for each detection area, thereby limiting the input of infrared radiation radiated from the detection area to the infrared detection means for each detection area , Focusing means
Indicates that the multiple condensing parts consist of a hemisphere and a hem,
The distance between the vertices since below the diameter of the hemispherical portion of the can construction and cheap and easy, both the location of the human body can be detected accurately to fine regions, a blind spot in the sensing area
It has the effect of reducing.

An air conditioner according to the present invention comprises: a light collecting means for collecting infrared light radiated from a human body detection area where a human body exists; an infrared light detecting means for detecting infrared light collected by the light collecting means; Determining means for determining the position of the human body and the floor temperature based on the result detected by the infrared detecting means; and shielding the infrared detecting means for each detecting area to limit the incoming light of infrared rays radiated from the detecting area for each detecting area. includes a human body detecting device comprising a shielding means, and a wind direction control means for controlling the air direction from the output result of the human body detection device, and the air volume control means for controlling the air flow from the output result of the human body detection device, a current
In the light means, the plurality of light condensing parts comprise a hemispherical part and a hem part,
Since the distance between the vertices of the hemisphere was less than the diameter of the hemisphere,
As can configure and cheap and easy, both the location of the human body can be detected accurately to fine regions, within the detection area
It has the effect of reducing blind spots.

[0092] The display device of an air conditioner according to the present invention,
In an air conditioner having a human body detection device and a display device,
The human body detection device includes an engagement hole that fits with an appropriate gap to an engagement piece provided in the air conditioner main body, and an elastic member that deforms in the front-rear direction with respect to the main body on the back of the mounting portion. With the configuration provided, the human body detection device and the display device can be moved, the variation in assembly can be absorbed, a perfect alignment can be obtained, and a highly accurate device can be obtained.

[0093] Also, by integrating the mounting portion of the display device and the mounting portion of the human body detection device, the engaging piece provided in the mounting portion of the display device, suitable clearance the engagement piece on the display holder fitted with a display board With the configuration in which the engagement hole is provided for fitting, the human body detection device and the display device can be moved, the variation in assembly can be absorbed, and a complete alignment can be obtained. The effect that a high thing is obtained is produced.

The human body detecting device according to the present invention comprises:
Analyzes the signals captured from the human body detection device.
Analysis means and the position of the human body based on the results of the analysis means.
And estimation means for determining the position of the human body.
This has the effect of being able to accurately detect even small areas.

The boundary where the output signal of the human body detecting device is located
The output signal is greater than the boundary value.
If so, the time t1 of the maximum point of the output signal and the time t of the minimum point
By calculating the approximate period from the difference between the two, the frequency
Calculate and determine the distance of the human body from the air conditioner
Can accurately detect the location of the human body even in small areas.
Has the effect of

Also, the viewing angle of the human body detection area is set to
Make it narrow for the body detection area, and
By designing the light collecting means so that it is wider,
And the difference in detection frequency increases, improving the accuracy of distance detection.
I do.

Further , the human body detection area is reduced according to the detection distance.
By eliminating the change, the frequency change becomes remarkable,
The degree improves.

[Brief description of the drawings]

FIG. 1 is a plan view of a human body detection device showing a configuration of Embodiments 1 to 6 of the present invention.

FIG. 2 is a front view (a), a front view (b), and a side view (c) of a light collecting means of the human body detection device showing the configuration of Embodiments 1 to 6 of the present invention.

FIG. 3 is a control block diagram of the human body detection device according to the first embodiment of the present invention.

FIG. 4 is a plan view (a) and a side view (b) showing a detection area when a human body detection device showing the configuration of the first to sixth embodiments of the present invention is installed indoors.

FIG. 5 is a flowchart of human body position detection showing the flow of waveform processing of the human body detection device according to the first embodiment of the present invention.

FIG. 6 is a diagram illustrating an output signal of a left infrared sensor and an output signal of a right infrared sensor when the human body detection device according to the first embodiment of the present invention detects a human body.

FIG. 7 is a diagram illustrating a determination table of a human body existing position by waveform processing of an output signal of the human body detection device according to the first embodiment of the present invention.

FIG. 8 is a front view of an air conditioner equipped with a human body detection sensor showing a configuration of a seventh embodiment of the present invention.

FIG. 9 is a front view (a), a vertical sectional view (b), and a horizontal sectional view (c) of a human body detection sensor showing the configuration of Embodiment 7 of the present invention.

FIG. 10 is a plan view (a), a front view (b), and a side view (c) showing a detection area when a human body detection sensor showing the configuration of Embodiment 7 of the present invention is installed indoors.

FIG. 11 is a control block diagram of a human body detection sensor showing a configuration of a seventh embodiment of the present invention.

FIG. 12 is a flowchart of human body position detection showing the flow of signal processing of the human body detection sensor according to Embodiment 7 of the present invention.

FIG. 13 is a diagram illustrating an output result of the human body detection sensor according to the seventh embodiment of the present invention.

FIG. 14 is a flowchart illustrating a control method of the air conditioner according to the eighth embodiment of the present invention.

FIG. 15 is a perspective view of a main part of a display device of an air conditioner according to Embodiment 9 of the present invention.

FIG. 16 is a sectional view of a main part of a display device of an air conditioner according to Embodiment 9 of the present invention.

FIG. 17 is a sectional view of a main part of a display device of an air conditioner according to Embodiment 9 of the present invention.

FIG. 18 is a front view of a display device of an air conditioner according to Embodiment 9 of the present invention.

FIG. 19 is a perspective view showing a main part of a blowing mechanism in a conventional air conditioner.

FIG. 20 is an overall circuit configuration diagram of a conventional air conditioner.

FIG. 21 is a sectional view of a main part of a display device of a conventional air conditioner.

FIG. 22 is a perspective view of a main part of a display device of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Human body detection apparatus 2 Left infrared sensor 3 Right infrared sensor 4 Light collecting means 4a Left light collecting part 4b Right light collecting part 4c Hemisphere part 4d Hem part 4e Refraction light collecting window 4f Fixing hole 5 Infrared discriminating means 6 Amplifying circuit 7 Frame 8 Input circuit 9 A / D converter 10 Judgment unit 10a Analysis means 10b Estimation means 11 Memory 12 Timer 13 Output circuit 14 Human body detection area 14a Human body detection area A 14b Human body detection area B 14c Human body detection area C 14d Human body detection area D 14e Human body detection Area E 14f Human body detection area F 14g Human body detection area G 14h Human body detection area H 14i Human body detection area I 14j Human body detection area J 14k Human body detection area K 14L Human body detection area L 15 Viewing angle 16 Infrared sensor U 17 Infrared sensor L 18 Scanning Plate 19 Scanning plate motor 20 Slit 21 Photo-in Taper 22 Micro switch A 23 Micro switch B 24 Microcomputer 25 CPU 26 Person 27 Wind direction louver motor 28 Rotating louver motor 29 Fan motor 31 Human body detection sensor 31a Infrared sensor 31b Condensing means 31c Shielding means 31d Amplifying circuit 31e Frame 31f Mounting jig 32 air conditioner 33 wind direction control wing 34 outlet 35 human body detection area 35a human body detection area A 35b human body detection area B 35c human body detection area C 35d human body detection area D 35e human body detection area E 35f human body detection area F 36 viewing angle 37 input Circuit 38 A / D converter 39 Judgment unit 39a Analysis unit 39b Estimation unit 40 Memory 41 Timer 42 Output circuit 43 Wind direction control unit 44 Air volume control unit 45 Room temperature control unit 46 Louver 47 Top 48 Infrared sensor U 49 Infrared sensor L 50 Scanning plate 51 Scanning plate motor 52 Slit 53 Photo interrupter 54 Micro switch 1 55 Micro switch 2 56 Microcomputer 57 CPU 58 Person 59 Wind direction louver motor 60 Rotating louver motor 61 Fan motor 101 Panel 102 decorative board 103 display board 104 display section 105 main body 106 elastic member 107 display holder 108 electric component receiving section 109 mounting piece 110 screw 111 screw 112 locking piece 113 claw 114 human body detecting device 115 mounting section 116 claw 117 mounting hole 118 main body 119 Spring 120 Claw 121 Display mounting board 122 Display holder 123 Tube part 124 Display part 125 Mounting hole 126 Lens part 127 Panel 128 Display part convex hole part 29 human body detection for recessed hole portions 130 periphery

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Ito 2-14-40 Ofuna, Kamakura City Inside Mitsubishi Electric Corporation Lifestyle Systems Development Laboratory (72) Inventor Jinichi Suzuki 3-1-1 Oga, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works (72) Inventor Hideaki Koizumi 3-18-1, Oka, Shizuoka City Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka Branch Office (72) Inventor Kunio Matsushita Ogura 3-chome, Shizuoka City No. 1 Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka Branch (56) References JP-A-5-240489 (JP, A) JP-A-1-297589 (JP, A) JP-A-2-28029 (Japanese) (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 11/02 103 F24F 11/02 102 F24F 11/02 105

Claims (13)

(57) [Claims] 1. A light collecting means for collecting infrared light radiated from a human body detection area where a human body is present, a plurality of infrared light detecting means for detecting infrared light from different directions collected by the light collecting means, and a determination means for determining a position of the human body by the voltage and frequency of the output signal of the infrared detection means, said condensing means, its plurality of light converging portions
It consists of a hemisphere and a hem, and the distance between the vertices of the hemisphere is
A human body detection device having a diameter equal to or less than the diameter of the hemisphere . 2. The light-collecting means has a refraction-light-condensing window for dividing infrared light to be condensed, and the refraction-light-condensing window changes an area in accordance with a corresponding human-body detection area to freely change detection sensitivity. The human body detecting device according to claim 1, wherein 3. The light-collecting means has a refraction-light-condensing window for splitting infrared light to be condensed, and the refraction-light-condensing window changes the thickness in accordance with the corresponding human body detection area, thereby freely changing the detection sensitivity. The human body detecting device according to claim 1, wherein 4. The light-collecting means, wherein the light-collecting part comprises a hemispherical part and a skirt, and a radius of the hemispherical part corresponds to an angle formed by a contact point between the hemispherical part and the skirt and a center of the hemispherical part. 2. The human body detecting device according to claim 1, wherein the human body detecting device can be selected according to a human body detection area to be performed. 5. A light-emitting device, comprising:
Infrared that shields arc-shaped infrared rays along the shape of the light condensing means
2. The person according to claim 1, further comprising a line discriminating means.
Body detection device. 6. A light collecting means for collecting infrared light radiated from a human body detection area where a human body is present, an infrared light detecting means for detecting infrared light collected by the light collecting means, and an infrared light detected by the infrared light detecting means. Determining means for determining the position of the human body and the floor temperature from the result, and shielding means for shielding the infrared detection means for each detection area, thereby restricting the input of infrared light radiated from the detection area for each detection area. Prepared , said collection
In the light means, the plurality of light condensing parts comprise a hemispherical part and a hem part,
The human body detecting device , wherein a distance between vertices of the hemispherical portion is smaller than a diameter of the hemispherical portion . 7. A light collecting means for collecting infrared light radiated from a human body detection area where a human body exists, an infrared light detecting means for detecting infrared light collected by the light collecting means, and the infrared light detecting means detects the infrared light. Determining means for determining the position of the human body and the floor temperature from the result, and shielding means for shielding the infrared detection means from entering the infrared light radiated from the detection area for each detection area by shielding each detection area, includes a human body detecting device, and direction control means for controlling the air direction from the output result of the person body detection device, and the air volume control means for controlling the air flow from the output result of the human body detection device, the having, the focusing means
Has a plurality of light-collecting portions comprising a hemispherical portion and a hem portion,
An air conditioner wherein the distance between the vertices of the spherical portion is smaller than the diameter of the hemispherical portion . 8. A human body detecting device and a display device according to claim 1.
In the air conditioner having
With an appropriate clearance between the engagement pieces provided on the air conditioner body
Engagement hole to fit, front and rear with respect to the main body on the back of the mounting part
And an elastic member that deforms in the direction.
Display device of air conditioner. 9. A mounting portion of the human body detecting device and mounting of the display device.
Parts are integrated, and an engagement piece is provided in a mounting portion of the display device,
Appropriate engagement piece to display holder with display board
Characterized by having an engagement hole for fitting with a large gap.
A display device for an air conditioner according to claim 8. 10. The apparatus according to claim 1, wherein said determining means is provided by a human body detecting device.
Analysis means for analyzing the embedded signal, and the analysis means
Estimating means for estimating the position of the human body from the result of
The human body detection device according to claim 1, further comprising: 11. A boundary value at which an output signal of a human body detecting device has a certain value.
It is determined whether the output signal is greater than or equal to the boundary value.
Then, the time t1 of the maximum point and the time t2 of the minimum point of the output signal
Frequency by calculating the approximate period from the difference
To determine the distance of the human body from the air conditioner.
The human body detecting device according to claim 10, wherein 12. A human body having a view angle of a human body detection area at a short distance.
Make it narrower for the detection area, and
The feature is to design the light collecting means so that it becomes wider
The human body detection device according to claim 1, wherein 13. A human body detection area is reduced according to a detection distance.
The human body detection device according to claim 1, wherein