JP2541373B2 - Electric stove - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric stove having a swing function.

[0002]

2. Description of the Related Art For example, in a floor-standing type electric stove, a stove body having a heater which automatically swings its head in order to widen a heat radiation range is widely used (for example, Japanese Utility Model Publication No. 61-28963). reference). However, conventionally, the range in which the main body of the stove swings is constant regardless of the number of people, so that efficient heating cannot be performed.

Therefore, a person tracking device (see Japanese Patent Application Laid-Open No. 1-196442) that detects a person in a predetermined detection area and changes the direction of the apparatus according to the movement of the person is used as the swing function. It is conceivable to incorporate it in an electric stove equipped with.

[0004]

However, the person tracking device only tracks the first detected person, and when that person intersects with another person, which person is tracked? Is uncertain. Therefore, when the person tracking device is incorporated in an electric stove, heating is not spread to all persons in the room, which may cause discomfort to persons who have not been heated. .

The present invention has been made in view of the above circumstances, and does not shake the head in an area where there are no people, and also shakes the head so that all the people in the room are heated. It is intended to provide an electric stove.

[0006]

In order to solve the above problems, an electric stove according to the present invention is a heat radiation type heater having a heater.
And stove body, and a swing means for causing the oscillating operation to the stove body, stoves by oscillating means
The setting of the swing range of the main unit can be changed within the maximum swing range
A functioning electric stove that divides the maximum swing range of the stove body by the above swinging means into multiple zones
In addition, each zone is equipped with a sensor to detect people,
Sensor, the top of the stove body
A person detection method to detect people within the large swing range , or strike
Separately from the swing of the main body,
Sensor on the support member that swings within the maximum swing range
Attached, and by the sensor, by the swinging means.
Person detection to detect people within the maximum swing range of the stove body
A knowledge unit, all to cover the range of human is detected by the human detection means, and so as not to shake the neck on the outside thereof, be provided with a control means for setting a swing range of the stove body by oscillating means Is characterized by.

[0007]

In the electric stove of the present invention having the above-mentioned structure, the control means covers the entire range in which a person is detected by the person detecting means and does not swing the outside of the person. The swing range is set.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric stove according to the present invention will be described below with reference to the drawings showing embodiments. As shown in FIG. 2, the electric heater of this embodiment is a sheath type heater H.
Stove body 1 with attached, floor stand 3,
A support member 2 attached to the back side (left side in the figure) of the stove body 1 and supported by a shaft 31 of the floor-standing stand 3 so as to swing freely, and as a swinging means arranged in the support member 2. AC servo motor M of.

The floor-standing stand 3 is provided with a rod-shaped support 32 for supporting the shaft 31 and a flat plate-like base 33 for supporting the support 32, and the front side of the base 33 (right side in the figure). ), The human detection means 4 is arranged. As shown in FIG. 3, the person detecting means 4 divides the maximum swing range of the stove body 1 by the AC servomotor M into left and right two zones Sa and Sb, and there is no person in each zone Sa and Sb. Two pyroelectric sensors 4 to detect whether
a and 4b (see FIG. 1), each of the pyroelectric sensors 4a and 4b has a sensor unit 40 as shown in FIG.
1, a preamplifier section 402, a comparator section 403, and a timer section 404.

The pyroelectric sensors 4a and 4b are respectively
As shown in FIG. 1, it is connected to a CPU 50 as a control means via interfaces 51a and 51b. Electric power that is rectified and smoothed is supplied to the CPU 50 from a power supply device (not shown) (for example, single-phase 100V) via the step-down transformer 60, the rectifying circuit 61, and the smoothing circuit 62.

The CPU 50 also includes a photo coupler 5
Light emitting elements 52a, 5 which are the input side (light emitting side) of 2, 53
3a and a reference position detecting means 54 for detecting a reference position (home position) of the stove body 1 with respect to the floor-standing stand 3 are connected. Reference position detecting means 5
As 4, a photo interrupter, a limit switch, or the like that outputs a signal when the stove body 1 is in the home position is used. In addition, in this embodiment, as shown in FIG.
The home position of the stove body 1 is in the state of being directed in the direction of the boundary line K between a and Sb.

The electric power from the power supply device is supplied to the heater H through the switch Sw and the temperature fuse Fu, and also through the photothyristor 52b which is the output side (light receiving side) of the photocoupler 52, the AC servomotor. It is supplied to the right rotation terminal M1 of M and is supplied to the left rotation terminal M2 of the AC servomotor M via the photothyristor 53b which is the output side of 53 of the photocoupler 53.

The photocouplers 52 and 53 are light emitting elements 52.
A signal is input from the CPU 50 to either one of a and 53a to bring one of the photothyristors 52b and 53b on the output side into a conductive state, whereby the right rotation terminal M1 or the left rotation of the AC servomotor M is rotated. Power is supplied to the terminal M2 to rotate the AC servomotor M to the left or right.

In the electric stove of this embodiment, which comprises the above-mentioned components, the CPU 50 first detects the persons in the zones Sa and Sb by the pyroelectric sensors 4a and 4b of the person detecting means 4. When the human detection by the human detection means 4 is completed, CP
The U50 inputs a signal to one of the light emitting elements 52a and 53a on the input side of the photocouplers 52 and 53 to rotate the AC servomotor M and rotate the stove body 1 to the home position.

Next, as a result of human detection by the human detection means 4,
If a person is detected only in the zone Sa, the above CP
U50 covers the stove body 1, zone Sa ,
And the data of the number of rotations of the AC servomotor M required to swing the head to the zone Sb which is the outside thereof and the stove body 1 is rotated from the home position to the zone Sa, After that, the zone S
From the data of the order of the rotation direction of the AC servomotor M required to swing only in the range that covers a, the signal input time to the light emitting elements 52a and 53a of the photocouplers 52 and 53 (that is, to the AC servomotor M). Energizing time)
And the order of signal input to both light emitting elements 52a and 53a (that is, the order of energization to the right rotation terminal M1 and the left rotation terminal M2 of the AC servomotor M).

Then, the CPU 50 inputs a signal to the light emitting elements 52a and 53a according to the above calculation result,
The stove body 1, to cover the zone Sa, and outside the
The zone Sb on the side is swung within a range in which the head is not swung . On the other hand, as a result of human detection by the human detection means 4, the zone S
When a person is detected only in b, the CPU 50 covers the zone Sb in the same manner as above and outside the zone Sb.
Stove body 1 within a certain range Sa without swinging the head
The signal input time to the light emitting elements 52a and 53a necessary for swinging the light source and the order of signal input to both the light emitting elements 52a and 53a are calculated, and signals to the light emitting elements 52a and 53a are signaled according to the calculation result. Enter the stove body 1
Is swung only in the range that covers the zone Sb.

Further, as a result of human detection by the human detection means 4, when a human is detected in both the zones Sa and Sb, the CPU 50 performs the same processing as in the above.
The range that covers both b, that is, the stove body 1
The signal input time to the light emitting elements 52a and 53a required to swing the stove body 1 within the maximum swing range of the light emitting elements 52a and 53a is calculated, and the light emitting elements 52a and 53a are calculated according to the calculation result.
The signal is input to a and the stove body 1 is swung.
In this case, the order of signal input to both light emitting elements 52a and 53a is set arbitrarily.

It should be noted that the human detection by the human detection means 4 is performed during operation of the electric stove so that the human movement can be dealt with at any time.
The setting is repeated every predetermined time, and the setting of the swing range described above is updated each time. According to the electric stove of the embodiment described above, the maximum swing range of the stove body 1 is divided into two zones Sa and Sb on the left and right sides, and both zones Sa, Sb are detected from the results of human detection in the zones Sa, Sb. Of Sb, the swing range of the stove body 1 is set so as to cover only the zone where a person is detected, so that the person who is in front of the stove does not swing in the zone where there is no person. Heating will be spread.

Next, the embodiment shown in FIG. 5 will be described. In this embodiment, as shown in FIG.
The maximum swing range of three or more zones S1 to Sn
And the person in each zone S1 to Sn is detected, and the swing range is set to each zone S1 to Sn.
This is done in units, and as shown in FIG.
To a plurality of pyroelectric sensors 41 to 4 corresponding to Sn, respectively.
n.

The CPU 50 detects a person with each of the pyroelectric sensors 41 to 4n, and based on the result, the detection data processing means 50a for finely setting the swing range of the stove body 1 in units of each zone S1 to Sn, and The amount of rotation of the AC servomotor M is calculated based on the setting data of the swing range in the detection data processing means 50a, and based on that,
The photocouplers 52 and 53 are provided with a swing control means 50b for controlling the AC servomotor M by inputting signals to the light emitting elements 52a and 53a.

The home position of the stove body 1 detected by the reference position detecting means 54 is the zone S1.
Is set to the right end of the stove body 1, that is, the right end of the maximum swing range of the stove body 1 (in the direction of the alternate long and short dash line K in FIG. 6). In this embodiment, the configuration of the parts other than those described above is the same as that of FIG. 1 described above, and therefore, the same parts are designated by the same reference numerals and the description thereof will be omitted.

In the electric stove of the above embodiment, first, the detection data processing means 50a detects the person in each zone S1 to Sn by the pyroelectric sensors 41 to 4n of the person detecting means 4. When the person detection by the person detection means 4 is completed, the head swing control means 50b causes the light emitting element 52 of the photocoupler 52 to move.
Input a signal to a and rotate the AC servomotor M clockwise,
Rotate the stove body 1 to the home position.

As a result of the person detection by the person detection means 4, for example, when it is detected that there is a person in the zones S3, S4 and S7, the detection data processing means 50a sets the swing range of the stove body 1 to the above range. The range (zone I in FIG. 6) extending from zone S3 to zone S7 is set. Then, the detection data processing means 50a moves the stove body 1 from the home position to the zone S which is the starting point of the swing range I.
3, the number of rotations of the AC servomotor M required to rotate counterclockwise to the right end position of 3, and the number of rotations of the AC servomotor M required to swing the stove body 1 so as to cover the swing range I. And the order of the rotation direction of the stove body 1 are obtained, and the result is input to the swing control means 50b.

When the above-mentioned respective data are input from the detection data processing means 50a, the head swing control means 50b receives the light from the light emitting elements 52a, 52a of the photocouplers 52, 53 based on these data.
Signal input time to 53a (that is, AC servo motor M
To the light emitting elements 52a and 53a (that is, the order of energizing the right rotation terminal M1 and the left rotation terminal M2 of the AC servomotor M).

Then, the head swing control means 50b inputs a signal to the light emitting elements 52a and 53a in accordance with the above calculation result to cover the stove body 1 and the head swing range I.
And outside the zones S1 and S2 and the zone
Swing heads S8 to Sn without swinging. According to the electric stove of the embodiment described above, both the zone for detecting a person and the setting range of the head swing are set more finely than those of the previous embodiments, so that the stove body 1 This has the advantage that the swing range can be controlled more finely and that subtle changes in the position of the person can be handled in detail.

Although the electric stoves of the above-mentioned two embodiments were provided with the human detecting means 4 having a plurality of pyroelectric sensors 4a, 4b, 41 to 4n, as shown in FIG.
It is also possible to use the human detection means 7 provided with the light receiving element 71. The person detecting means 7 in the figure detects a person when a person approaches within a predetermined range and the light from the light emitting element 70 reflects the person and enters the light receiving element 71. 70 is connected to the CPU 50 via an interface 72, and the light receiving element 71 is connected to the CPU 50 via a filter 73, an amplifier 74 and an A / D converter 75.

Light emitting element 7 used in the person detecting means 7
The combination of 0 and the light receiving element 71 has a narrower human detection range (angle) than the previous pyroelectric sensor. Therefore, detection is not performed for each zone but, for example, as shown in FIGS. 8 (a) and 8 (b), The light emitting element 70 and the light receiving element 71 are attached to a supporting member R that swings left and right by a servo motor m, and the supporting member R
Swivel left and right to sweep the detection direction left and right,
It is preferable to detect a person within a predetermined range.

In order to always detect the position of a person within the maximum swing range of the stove body 1 (see FIGS. 3 and 6), the light emitting element 70 and the light receiving element 71 are arranged in the swing range of the stove body 1. It is necessary to always swing the head within a certain range regardless of the change in the range. In the case of FIG. 8, the above swing range is the maximum swing range of the stove body 1 as shown in FIG. It is set to 180 °, which is slightly wider than the angle. In addition, the support member R includes the stove body 1
Similarly to, the home position that serves as a reference for swinging is set.

According to the person detecting means 7, the light emitting element 70
Since the person detection is performed while continuously swinging the light receiving element 71 and the light receiving element 71 without interruption, the person detection can be performed more finely than the two embodiments in which the maximum swing range of the stove body 1 is divided into a plurality of zones. It has the advantage that it can be done. FIG. 9 shows a case where the CCD image sensor 8 is used as a person detecting means.

The view of the CCD image sensor 8, one of which
A plurality of photodiodes 8 each corresponding to an optical sensor
A plurality of vertical rolling CCDs 81 to which 0, 80 ... Are connected.
81 ... Connected by a horizontal shift register 82,
The input side is connected to the CPU 50 via the interface 90, and the output side is connected to the CPU 50 via the interface 91.
Connected to 50. Then, according to the CCD image sensor 8, as shown in FIG. 10, a planar image having each of the photodiodes 80, 80 ... As one dot is obtained.

In order to use the CCD image sensor 8 for detecting a person, a lens is required for forming an image of a place for detecting a person on the surface of the CCD image sensor 8. The range in which a person can be detected by the CCD image sensor 8 is determined by the angle of view of the lens. Therefore, in order to detect a person within the maximum swing range of the stove body 1, a lens capable of accommodating the above swing range in that angle of view is used. Must be used. The angle of view of the lens is determined by the size of the CCD image sensor 8 and the focal length of the lens. Therefore, the focal length of the lens should be selected in consideration of the size of the CCD image sensor 8 to be used and the required angle of view. Good.

In the case of the CCD image sensor 8 described above,
The range in which images are formed on the photodiodes 80, 80 in one column connected to one vertical rolling CCD 81 corresponds to one zone when the pyroelectric sensor is used. For example,
If the shaded portion in FIG. 10 is a person, it means that the person is detected in the zones of the second to fourth columns and the seventh to ninth columns from the left.

The structure of the electric stove of the present invention is not limited to the above-described embodiments and modifications. For example, in the embodiment of FIGS. 1 and 5, the AC servomotor M
The amount of rotation of the stove body 1 was defined by the energization time, and the swing range of the stove body 1 was set. However, for example, a rotary encoder is provided in any part of the rotary drive system of the stove body, and the pulse amount generated by the rotation is Then, the swing range of the stove body 1 may be set.

If the detection sensitivity (distance for detecting a person) of the person detecting means 4, 7, 8 is too good, a person far away, furniture, windows, etc. may be detected and malfunction may occur. Since it is not possible to detect even a person who is far away, it is desirable to set the distance to be appropriate and appropriate from the stove body 1, for example, by adjusting the distance to reach the heating. Other,
Various design changes can be made without changing the gist of the present invention.

[0035]

The electric stove according to the present invention is constructed as described above, and the control means covers the entire range in which the person is detected by the person detecting means and does not swing the head outside thereof. Depending on the setting, the swing range of the stove body is set, so you do not swing in the range where there are no people, and
All the people in front of the stove will be heated, and there is no risk of discomfort to the user.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an electrical configuration of an embodiment of an electric stove of the present invention.

FIG. 2 is a partially cutaway side view showing the external appearance of the electric stove of the above embodiment.

FIG. 3 is an explanatory diagram illustrating a state in which the maximum swing range of the stove body is divided into two left and right zones to perform human detection in the electric stove of the above-described embodiment.

FIG. 4 is a block diagram showing an internal configuration of a pyroelectric sensor used in the above embodiment.

FIG. 5 is a circuit diagram showing an electrical configuration of another embodiment of the electric stove of the present invention.

FIG. 6 is an explanatory diagram illustrating a state in which the maximum swing range of the stove body is divided into a plurality of zones and a person is detected in the electric stove according to the embodiment.

FIG. 7 is a block diagram showing a modified example of the human detection means.

8A and 8B are views showing the outer appearance of the person detecting means of FIG. 7, in which FIG. 8A is a plan view and FIG. 8B is a side view.

FIG. 9 is a block diagram showing another modification of the person detecting means.

FIG. 10 is a schematic view showing an example of a detection image obtained by the person detecting means in FIG.

[Explanation of symbols]

 H heater 1 stove main body M AC servo motor (swing means) 4 human detection means 7 human detection means 8 CCD image sensor (human detection means) 50 CPU (control means)

Claims (1)

(57) [Claims] And 1. A stove body heat radiant having a heater (H) (1), and a swing means for causing the swing operation (M) to the stove body (1), oscillating means (M ) Strike
The swing range of the main unit (1) is within the maximum swing range.
In an electric heater which is capable of changing, multi maximum swing range of the stove body (1) by the swinging means (M)
Number of zones (Sa) (Sb), (S1)-(Sn)
Sensors (4a) (4a) that detect people for each of (Sa), (Sb), (S1) to (Sn)
b), (41) to (4n), (80), the above sensors (4a) (4b), (4
1) ~ (4n), (80), the swing by the swinging means (M)
Separate from the person detection means (4) (8) for detecting people within the maximum swing range of the stove body (1) or the swing of the stove body (1)
The maximum of the stove body (1) by the swinging means (M) described above.
Mount the sensor (71) on the support member (R) that swings in the swing range.
Attach it to the swinging means (M) by the sensor (71).
To detect people within the maximum swing range of the stove body (1).
The person detection means (7) and the person detection means (4) (7) (8) cover the entire area where a person is detected , and a neck is placed outside the area.
Stove body with swinging means (M) so as not to shake
An electric stove comprising: a control means (50) for setting the swing range of (1).