JP7348139B2 - electric stove - Google Patents

Description

The present invention relates to an electric stove equipped with a human body sensor that detects the presence of a human body.

Conventionally, in this type of device, a main body case part in which a heating element is installed and a base part equipped with a support body for supporting the main body case part are installed at the bottom, and the main body case part is oscillated by a swing motor that swings the main body case part from side to side. The main body case is equipped with a human body sensor that detects the presence of a human body, and a control unit that controls the output of the heating element based on the detection result of the human body sensor, and the swing motor is driven. It is known that the human body sensor does not detect a human body when the human body sensor is in use, but instead detects a human body using the human body sensor by bringing the swing motor to a stop position every time a predetermined period of time elapses after the swing motor starts driving. .

Japanese Patent Application Publication No. 2012-220037

However, in this conventional electric stove, the swing motor is stopped every predetermined period of time in order to detect a human body over a wide area. The problem was that the detection range of the human body sensor was biased in one direction, and it was determined that there was no one inside the room where the electric heater was installed, even though there was someone inside.

In order to solve the above problem, claim 1 of the present invention includes: a main body case portion having a heating element on the front side, a support body supporting the main body case portion, and a base portion installed at a lower part of the support body. a swing motor for swinging the main body case section from side to side, a movable range setting means for setting a movable range for swinging the swing motor, a swing switch for starting driving the swing motor, and a swing motor for swinging the main body case section from side to side; A human body sensor configured to detect the presence of a human body, a human body switch that causes the human body sensor to start detecting a human body, and a control unit that controls the output of the heating element based on the detection result of the human body sensor. In the electric stove, the oscillating motor is configured with a stepping motor, and the control unit is configured to set the oscillating motor by the movable range setting means based on the movable range set by the movable range setting means. motor control means for calculating and controlling the number of drives of the stepping motor so that the stepping motor stops at the maximum angle of the movable range or at a predetermined human body detection position in the center of the movable range; When the human body switch is turned on, the human body sensor does not detect a human body while the swing motor is driving, and the calculated driving number is driven after the swing motor starts driving. Then, the swing motor is stopped at the predetermined human body detection position, and the human body sensor starts detecting the human body.

Further, in claim 2, a main body case portion including a heating element on the front side, a support body supporting the main body case portion, a base portion installed at a lower part of the support body, and a main body case portion disposed on the left and right sides. A swing motor for swinging the swing, a movable range setting means for setting a movable range for swinging the swing, a swing switch for starting the drive of the swing motor, and a swing switch for detecting the presence of a human body provided in the main body case portion. In the electric stove, the electric stove includes a human body sensor, a human body switch that causes the human body sensor to start detecting a human body, and a control unit that controls the output of the heating element based on the detection result of the human body sensor. , based on the movable range set by the movable range setting means, the swing motor stops at the maximum angle of the movable range set by the movable range setting means or at a predetermined human body detection position in the center of the movable range; The control unit includes a motor control unit that calculates and controls a predetermined time from the start of driving of the swing motor to the stop of the drive, and the control unit is configured to control the swing motor when the swing switch and the human body switch are turned on. When the swing motor is driving, the human body sensor does not detect a human body, and when the swing motor is driven for the predetermined period of time after the swing motor starts driving, the swing motor is stopped at the predetermined human body detection position. Then, the human body sensor starts detecting a human body.

Further, in claim 3, when the motor control means stops the oscillating motor, at least the oscillating motor moves at the maximum angle of the movable range set by the movable range setting means or at the center of the movable range. The oscillating motor is stopped at one of the following positions, and the oscillating motor is stopped at either the left end of the maximum angle of the movable range, the center of the movable range, or the right end of the maximum angle of the movable range. I tried to make it different each time.

Further, in claim 4, the motor control means is arranged such that the amount of drive necessary for driving the swinging motor from the human body detection position to the next human body detection position is greater than at least a predetermined minimum drive amount. I tried to calculate it.

Further, in claim 5, the control unit counts the number of times the human body sensor does not detect a human body continuously, and when counting a predetermined number of times or more, stops the swing motor and reduces the output of the heating element. I tried to let them do it.

Further, in a sixth aspect of the present invention, a notification section is provided to notify when the swing motor is stopped and the output of the heating element is reduced.

Further, in claim 7, when the presence of a human body is detected by the human body sensor after stopping the swinging motor and reducing the output of the heating element, the control unit drives the swinging motor to generate the heat. The body output is now returned to the original setting value.

According to this invention, the motor control means is configured to move the swing motor to a maximum angle of the movable range or a predetermined human body detection position in the center of the movable range based on the movable range set by the movable range setting means. By controlling the swing motor so that it stops at the maximum angle of the movable range or at the center of the movable range, the detection range of the human body sensor is biased in one direction depending on the stop position. It is possible to reliably prevent this from happening, and it is possible to solve the problem of determining that no one is present even though there are people in the room where the electric heater is installed.

A front view showing an embodiment of this invention Side view of the invention Plan view of the same invention Control block diagram of the invention Flowchart explaining the energy-saving operation of the invention A flowchart explaining the operation of energy saving control when no swinging operation is performed according to the same invention. Flowchart explaining the operation of energy saving control when there is swinging operation in the first embodiment Flowchart explaining the operation of energy saving control when there is swinging operation in the second embodiment Diagram of the relationship between the swing stop position when detecting a human body, the number of human body detections, and the timing

Next, a first embodiment of an electric stove to which the present invention is applied will be described based on the drawings.
1 is an electric stove equipped with two heating elements 2 each made of a stainless steel heater coated with far-infrared ceramic paint and emitting far-infrared rays. Reference numeral 3 denotes a base portion constituting the lower part of the electric stove 1, and 4 a support body that is installed on the base portion 3 and supports a main body case portion 5 having a heating element 2 at a predetermined position inside.

The main body case portion 5 includes a reflector plate 6 that covers the back surfaces of the two heat generating elements 2 and reflects the radiated heat forward, and a reflector plate 6 that covers the front side of the heat generating elements 2 to prevent human fingers from entering. A guard body 7 is provided to prevent burns caused by contact with the heating element 2.

This guard body 7 is formed of vertical slots 8, one on each side, and a plurality of horizontal slots 9, which are located between the vertical slots 8 and are spaced apart from each other to prevent human fingers from entering. Further, reference numeral 10 denotes a control rod which is installed at the top and bottom ends of the horizontal slot 9, has the same shape and size as the horizontal slot 9, and whose central portion is bent inward to prevent fingers from entering.

Reference numeral 11 is a pyroelectric human body sensor that is provided at the bottom of the main body case part 5 and detects the human body based on changes in ambient temperature. Reference numeral 12 is a display unit that displays the strength of the set temperature using LED lamps in 5 stages and 3 colors. 13 is a constant temperature sensor. A fluctuation lamp that lights up when a fluctuation operation that saves power by energizing the heating element 2 at intervals is performed, and 14 is an output of the heating element 2 when it is determined by the human body sensor 11 that there is no person around the electric stove 1. This is an energy-saving lamp that lights up when energy-saving operation that reduces the energy consumption is performed.

Reference numeral 15 is an operation unit installed on the top surface of the main body case part 5, and by rotating the knob, the power can be turned on/off and the output of the heating element 2 can be adjusted from 10 output levels in the range of 390W to 1100W. The adjustment knob 16 can be used to instruct the start and stop of the swinging operation that reciprocates the main body case portion 5 from side to side, and the movable range of the swing can be set to 30°, 50°, and 70°. A swing switch 17 that is a movable range setting means, an off timer switch 18 that can be set to turn off the power after a selected time of 30 minutes, 1 hour, 2 hours, or 3 hours, and a heating element 2 that is turned off at regular intervals. a fluctuation switch 19 that instructs to start and stop a fluctuation operation that can save power by supplying power to the body, and a human body switch 20 that instructs the start of energy-saving operation control that starts human body detection by the human body sensor 11 and shifts to energy-saving operation. is provided.

Reference numeral 21 denotes a swing motor located at the upper end of the support body 4 and connected to the center of the main body case portion 5, and by turning on the swing switch 17, the angle can be varied from side to side up to about 70 degrees from the front direction. I can do it. In this embodiment, one switch performs the function of instructing the start and stop of the swing operation and the function of setting the swing range of 30°, 50°, and 70°, but separate switches are provided. It may also be operated. Further, 22 is a handle located on the upper part of the swing motor 21, which allows the electric stove 1 to be lifted and moved.

Reference numeral 23 denotes a control unit that is installed at the bottom of the operation unit 15 and is composed of a microcomputer, etc., and is used to turn on/off the power, adjust the temperature, and perform normal heating operations such as swing operation using various switches operated on the operation unit 15. A normal operation control means 24 that controls, an energy-saving operation control means 25 that controls transition to energy-saving operation after the human body switch 20 is turned on, and a movable range set by the swing switch 17 that is a movable range setting means. a motor control means 26 that controls the swing motor so as to stop at the maximum angle of the set movable range or a predetermined human body detection position in the center of the movable range based on the set motion range; and a motor control means 26 that generates a notification sound when shifting to energy saving operation. The notification section 27 is also provided.

The maximum angle of the movable range here is the left and right angle in which the swing motor 21 can move. For example, when the movable range is set to 30 degrees with the swing switch 17, the center of the movable range is when the base part 3 and the main body case part 5 both face the front, and the swing motor 21 The maximum angle of the right side movable range is when the case portion 5 is driven to the right by 15 degrees, and the maximum angle of the left side movable range is when the main body case portion 5 is driven to the left by 15 degrees by the swing motor 21. be. In this way, when the movable range is set to 30° with the swing switch 17, the range of movement is 30° (15° right , 15° to the left), the maximum angle of the movable range is 15° to the right and 15° to the left. Similarly, when the movable range is set to 70° with the swing switch 17, the maximum angle of the movable range is 35° to the right and 35° to the left.

The motor control means 26 detects a human body using the human body sensor 11 by stopping the swing motor 21 at the maximum angle within the set movable range, so the human body is detected at the maximum angle within the range in which the user is likely to be present. In addition, the drive is stopped at the center of the set movable range and the human body sensor 11 detects the human body, so even if the user leaves the room for a while and is determined to be absent, the system will detect the human body after the user returns. Human body detection can be performed at the center position of the movable range where the user spends the most time.

When the adjustment knob 16 is operated and the power is turned on, the normal operation control means 24 adjusts the output of the heating element 2 to the output level adjusted by the adjustment knob 16, and displays the adjusted output level on the display section 12. When the LED of the color and lighting position corresponding to the output is emitted, and the adjustment knob 16 is adjusted to the power OFF position, the power supply to the heating element 2 is stopped and the normal heating operation is ended. Further, when the swing switch 17 is operated to ON while the power is ON, the swing motor 21 is driven to start swinging operation of the main body case portion 5, and when the swing switch 17 is turned OFF, the swing operation is started. make it stop. Further, when the time to turn off the power is selected by the timer switch 18, the power supply to the heating element 2 is stopped after the selected time has elapsed. When the fluctuation switch 19 is turned on, the fluctuation lamp 13 is turned on and the power supply to the heating element 2 is stopped at regular intervals to perform fluctuation operation with reduced output, and when the fluctuation switch 19 is turned off. Then, the fluctuation lamp 13 is turned off and the output of the heating element 2 is adjusted to the output level set by the adjustment knob 16.

Next, the energy saving operation controlled by the energy saving operation control means 25 will be explained based on the flowcharts shown in FIGS. 5 to 7.
First, when the power is turned on by operating the adjustment knob 16, the output of the heating element 2 is set to a set value within the range of 390W to 1100W by adjusting it to a predetermined output level (S101), and the energy saving operation control means 25 , it is determined whether the human body switch 20 has been turned ON (S102), and if it has been turned ON, it is determined whether the swing switch 17 has been turned ON and a swing operation is being performed (S103). If the oscillation switch 17 is turned on and the oscillation operation is performed, the system shifts to energy saving operation control when the oscillation operation is performed (S104), and if the oscillation switch 17 is not turned on and the oscillation operation is performed. If not, the process shifts to energy-saving operation control without swinging operation (S105).

Next, an explanation will be given of the energy saving operation when the head is not oscillated in S105.
The energy saving operation control means 25 starts human body detection by the human body sensor 11 (S201).

When the human body sensor 11 starts detecting a human body in S201, the energy-saving operation control means 25 determines whether a human body exists or does not exist around the electric stove 1 (S202), and if it is determined that there is no human body (S202 (Yes), a no-body detection timer that counts the duration of time when no human body is present starts counting (S203). Then, it is determined whether the timer count of the time when a human body is not present has exceeded 10 minutes (S204), and if it is determined that the timer count of the time when a human body is not present has continued for more than 10 minutes, the process proceeds to the next step, and the timer count of the time when a human body is not present is determined. If the duration is less than 10 minutes, the human body detection no timer continues counting, and the human body sensor 11 detects the human body again in S201.

At this time, if the presence of a human body is detected in S202 (S202 is No), the energy saving operation control means 25 resets the count of the human body detection no timer (S205), returns to S201, and again detects the human body in S201. 11 to perform human body detection.

Further, if it is determined in S204 that the count of the no-body detection timer has continued for 10 minutes or more (S204 is Yes), the energy-saving operation control means 25 lights up the energy-saving lamp 14, sounds a notification sound from the notification unit 26 for about several seconds, and displays the The display of the section 12 is changed to green indicating that the output of the heating element 2 is low, and a low output energy saving operation is started in which the output of the heating element 2 is reduced to 79W (S206).

After the low output energy saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S207), and if it is determined that there is a human body (S207 is No), the low output The energy saving operation is ended (S208), the swingless energy saving operation is restarted (S209), and the process returns to S201.

In addition, after the low-output energy-saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S207), and if the state where no human body is present continues (S207 is Yes), the power is turned off. Then (S210 is Yes), the energy saving operation is ended.

In this way, regarding the energy-saving operation control when no swinging operation is performed, by shifting to energy-saving operation when the human body sensor 11 does not detect the presence of a human body and the count of the no-body detection timer has elapsed for 10 minutes or more. Even when a person is stationary and there is no temperature change in the room, the presence or absence of a human body is determined based on the temperature change over a 10-minute period. It can be prevented.

Next, an explanation will be given of the energy saving operation when there is a swing in S104 in the first embodiment.
The motor control means 26 of the first embodiment determines at least the previous human body detection position (when the swing switch 17 is pressed in the first operation) based on the movable range set by the swing switch 17, which is the movable range setting means. The number of drives of the swing motor 21 is adjusted so that the swing motor 21 stops at a predetermined human body detection position at the maximum angle of the set movable range or the center of the set movable range, which is different from the location where the swing motor 21 started driving. Calculate and control. Here, it is preferable to use a stepping motor to drive the swing motor 21 by the calculated number of drives.

Next, a description will be given based on the flowchart of FIG.
The motor control means 26 checks the movable range set by the swing switch 17 (S301), and based on the set movable range, the swing motor 21 moves from the start position of the swing motor 21 to the set movable range. The driving number of the stepping motor is calculated so as to stop the stepping motor at the maximum angle of 1 or at a predetermined human body detection position in the center of the set movable range (S302).

The energy saving operation control means 25 checks whether the calculated number of drives has been reached (S303), and if the calculated number of drives has been reached (S303: Yes), stops the oscillating motor 21, Counting of the stop time timer is started (S304), and human body detection by the human body sensor 11 is started (S305).

The human body detection by the human body sensor 11 is performed until the count of the stop time timer reaches 15 seconds, and it is confirmed whether it is determined that a human body is detected or not detected in 15 seconds (S306), and the human body is detected. If it is determined that there is no human body detection (Yes in S306), the count of the number of times no human body is detected is increased by one (+1), the cumulative count of the number of times no human body is detected is calculated (S307), and the human body sensor detection is stopped ( S308). Further, if it is determined that a human body has been detected (S306: No), the human body sensor detection is stopped without counting the number of times that a human body has not been detected (S308).

Then, it is checked whether there was no human body detected in this human body detection (S309), and if there was a human body detected (S309 is No), the count number is reset to 0 regardless of the previous count of no human body detected. (S310).

Then, the energy saving operation control means 25 starts driving the drive motor 21 (S311), and returns to S301.

Also, it is checked whether there was no human body detected in this human body detection (S309), and if no human body was detected (S309 is Yes), the cumulative count of no human body detected calculated in S307 is not the 19th time (+19). (S312), and if it is the 19th time (+19) (S312 is No), the number of drives of the swing motor 21 is calculated so that the next human body detection position will be in the center of the movable range (S313). , return to S303.

Also, it is checked whether the calculated cumulative count of no human body detection is not the 19th time (+19) (S312), and if it is not the 19th time (+19) (S312 is Yes), the calculated cumulative count of no human body detection is 20. It is confirmed whether the number of times is greater than or equal to 20 times (S314), and if it is less than 20 times (No in S314), driving of the swing motor 21 is started (S311), and the process returns to S301.

Also, it is checked whether the calculated cumulative count of no human body detection is 20 or more (S314), and if it is 20 or more (S314 is Yes), the energy-saving operation control means 25 turns on the energy-saving lamp 14. The notification unit 26 makes a notification sound for several seconds, and the display on the display unit 12 changes to green, indicating that the heating element 2 is at low output. Energy saving operation is started (S315).

In this way, if no human body is detected for 20 consecutive times, the system switches to low-output energy-saving operation, so the next human body detection position after the 19th human body detection is the first one after the user returns. By calculating the drive frequency of the swing motor 21 so that the detection range is at the center of the movable range where there is a high possibility that a person exists, it is possible to avoid determining that no person is present even though there is a person. can do.

After the low output energy saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S316), and if it is determined that there is a human body (S316 is No), the low output The energy saving operation is ended (S317), the swingless energy saving operation is restarted (S311), and the process returns to S301.

In addition, after the low-output energy-saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S316), and if the state where no human body is present continues (S316 is Yes), the power is turned off. Then (S318 is Yes), the energy saving operation is ended.

In this way, the human body sensor 11 does not detect a human body when the swing motor 21 is driven to perform swing operation, and the human body is detected only when the swing motor 21 is stopped. This can improve the accuracy of human body detection by the pyroelectric human body sensor 11, which detects the presence of a human body based on indoor temperature changes during swing operation, and prevents false detection by the human body sensor 11. Heating operation can be performed.

Further, to explain in detail the motor control means 26 of the first embodiment using FIG. 9, the set maximum angle is based on the movable range of the swing set by the swing switch 17, which is the movable range setting means. So, for example, the maximum angle of swing is 50° (maximum right side angle 25°, maximum left side angle 25°) larger than the maximum angle of swing of 30° (maximum right side angle 15°, maximum left side angle 15°), so The number of drives required for the swing motor 21 to reciprocate is also greater at 50 degrees than at 30 degrees, and at a constant drive amount, as the maximum angle increases, the number of times the swing motor 21 can reciprocate through the set movable range decreases.

In this way, the required number of drives and the number of reciprocations from the start of the drive to the stop of the drive differ depending on the movable range of the swing set by the swing switch 17, which is the movable range setting means. By changing the number of drives of the stepping motor based on the movable range of the swing set by the swing switch 17, the swing motor 21 can be reliably stopped at the maximum angle of the movable range or at the center of the movable range. can.

Further, the motor control means 26 calculates a target human body detection position that differs each time at the maximum angle of the movable range or the center of the movable range, thereby preventing the human body detection position from being biased in only one direction. It can be prevented.

In addition, as a method to change the stop position each time, as shown in Figure 9, by shifting the stop position one by one and setting it as the target human body detection position, you can set the maximum angle on the right side of the movable range, the center of the movable range, It is possible to detect a human body at the three maximum angles on the left side of the range in the shortest time (the time it takes to detect a human body 3 to 4 times), so even if a person is on the right or left side of electric stove 1, it can be detected quickly and reliably. Can be detected.

Then, when determining the next target human body detection position of the swing motor 21, the motor control means 26 generates a drive necessary for the swing motor 21 to reciprocate at least once in the maximum swing movement range. The number of drives of the swing motor 21 is calculated so that the swing motor 21 is driven more than a predetermined minimum drive amount, and the drive is stopped at the nearest human body detection position, as shown in FIG.

In this way, as the movable range of the swing set by the swing switch 17 becomes larger, the number of times the swing motor 21 moves back and forth through the set range of motion becomes smaller, but the swing motor 21 is driven more than the minimum drive amount. By calculating the number of drives and determining the next target human body detection position, if the movable range is set large, the robot may stop many times to detect a human body during one round trip during swing operation. This makes it possible to prevent the user from feeling uncomfortable, and it is possible to stop the swinging at approximately the same time intervals no matter what range of swinging movement is set.

Next, an explanation will be given of the energy saving operation when there is a swing in S104 in the second embodiment.
The motor control means 26 of the second embodiment determines the maximum angle of the set movable range of the swing motor 21 or the set movable range based on the movable range set by the swing switch 17 which is a movable range setting means. A predetermined time period from when the swing motor 21 starts driving after detecting a human body until it stops when the next human body is detected is controlled so that the swing motor 21 stops at a predetermined human body detection position in the center of the body.

The motor control means 26 checks the movable range set by the swing switch 17 (S401), and based on the set movable range, the swing motor 21 moves from the starting position of the swing motor 21 to the set movable range. A predetermined time is calculated so as to stop at the maximum angle of , or a predetermined human body detection position in the center of the set movable range (S402).

The energy saving operation control means 25 checks whether the calculated predetermined time has been reached (S403), and if the calculated predetermined time has been reached (S403: Yes), stops the swing motor 21, Counting of the stop time timer is started (S404), and human body detection by the human body sensor 11 is started (S405).

The human body detection by the human body sensor 11 is performed until the count of the stop time timer reaches 15 seconds, and it is confirmed whether it is determined that a human body is detected or not detected in 15 seconds (S406), and the human body is detected. If it is determined that there is no human body detection (Yes in S406), the count of the number of times no human body is detected is increased by one (+1), the cumulative count of the number of times no human body is detected is calculated (S407), and the human body sensor detection is stopped ( S408). Further, if it is determined that a human body has been detected (S406: No), the human body sensor detection is stopped without counting the number of times that a human body has not been detected (S408).

Then, it is checked whether there was no human body detected in this human body detection (S409), and if there was a human body detected (S409 is No), the count number is reset to 0 regardless of the previous count of no human body detected. (S410).

Then, the energy-saving operation control means 25 starts driving the drive motor 21 (S411), and returns to S401.

Also, it is checked whether there was no human body detected in this human body detection (S409), and if no human body was detected (S409: Yes), check whether the calculated cumulative count of no human body detected is the 19th time (+19). It is confirmed (S412), and if it is the 19th time (+19) (S412 is No), the predetermined time of the swing motor 21 is calculated so that the next human body detection position will be in the center of the movable range (S413), and S403 Return to

Also, it is checked whether the calculated cumulative count of no human body detection is not the 19th time (+19) (S412), and if it is not the 19th time (+19) (S412 is Yes), the calculated cumulative count of no human body detection is 20. It is confirmed whether the number of times is greater than or equal to 20 times (S413), and if it is less than 20 times (No in S414), driving of the swing motor 21 is started (S411), and the process returns to S401.

Also, it is checked whether the calculated cumulative count of no human body detection is 20 or more (S414), and if it is 20 or more (S414 is Yes), the energy-saving operation control means 25 turns on the energy-saving lamp 14. The notification unit 26 makes a notification sound for several seconds, and the display on the display unit 12 changes to green, indicating that the heating element 2 is at low output. Energy saving operation is started (S415).

In this way, if no human body is detected for 20 consecutive times, the system switches to low-output energy-saving operation, so the next human body detection position after the 19th human body detection is the first one after the user returns. By calculating the drive frequency of the swing motor 21 so that the detection range is at the center of the movable range where there is a high possibility that a person exists, it is possible to avoid determining that no person is present even though there is a person. can do.

After the low output energy saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S416), and if it is determined that there is a human body (S416 is No), the low output The energy saving operation is ended (S417), the swingless energy saving operation is restarted (S411), and the process returns to S301.

After the low output energy saving operation, the human body sensor 11 monitors whether there is a human body around the electric stove 1 (S416), and if the state where no human body exists continues (S416 is Yes), the power is turned off. Then (S418 is Yes), the energy saving operation is ended.

In this way, the human body sensor 11 does not detect a human body when the swing motor 21 is driven to perform swing operation, and the human body is detected only when the swing motor 21 is stopped. This can improve the accuracy of human body detection by the pyroelectric human body sensor 11, which detects the presence of a human body based on indoor temperature changes during swing operation, and prevents false detection by the human body sensor 11. Heating operation can be performed.

Further, to explain in detail the motor control means 26 of the second embodiment using FIG. 9, the set maximum angle is based on the movable range of the swing set by the swing switch 17, which is the movable range setting means. So, for example, the maximum angle of swing is 50° (maximum right side angle 25°, maximum left side angle 25°) larger than the maximum angle of swing of 30° (maximum right side angle 15°, maximum left side angle 15°), so The predetermined time required for the swing motor 21 to reciprocate is also longer at 50 degrees than at 30 degrees, and with a constant drive amount, as the maximum angle increases, the number of times the swing motor 21 can reciprocate through the set movable range decreases.

As described above, the required predetermined time and the number of times the swing can be reciprocated from the start of the drive to the stop of the drive differ depending on the movable range of the swing set by the swing switch 17, which is the movable range setting means. By changing the predetermined time from drive start to drive stop based on the swing movable range set by the swing switch 17, the swing motor 21 is reliably set at the maximum angle of the movable range or at the center of the movable range. It can be stopped.

Further, the motor control means 26 calculates a target human body detection position that differs each time at the maximum angle of the movable range or the center of the movable range, thereby preventing the human body detection position from being biased in only one direction. It can be prevented.

In addition, as a method to change the stop position each time, as shown in Figure 9, by shifting the stop position one by one and setting it as the target human body detection position, you can set the maximum angle on the right side of the movable range, the center of the movable range, It is possible to detect a human body at the three maximum angles on the left side of the range in the shortest time (the time it takes to detect a human body 3 to 4 times), so even if a person is on the right or left side of electric stove 1, it can be detected quickly and reliably. Can be detected.

Then, when determining the next target human body detection position of the swing motor 21, the motor control means 26 generates a drive necessary for the swing motor 21 to reciprocate at least once in the maximum swing movement range. The number of drives of the swing motor 21 is calculated so that the swing motor 21 is driven more than a predetermined minimum drive amount, and the drive is stopped at the nearest human body detection position, as shown in FIG.

In this way, as the movable range of the swing set by the swing switch 17 becomes larger, the number of times the swing motor 21 moves back and forth through the set range of motion becomes smaller, but the swing motor 21 is driven more than the minimum drive amount. By calculating the number of drives and determining the next target human body detection position, if the movable range is set large, the robot may stop many times to detect a human body during one round trip during swing operation. This makes it possible to prevent the user from feeling uncomfortable, and it is possible to stop the swinging at approximately the same time intervals no matter what range of swinging movement is set.

In addition, regarding the stop time during which the swing motor 21 is stopped in S310 and S410 and the human body sensor 11 detects a human body, since it takes several seconds for the human body sensor 11 to be able to stably detect a human body, the human body sensor 11 as shown in FIG. By setting a stop time (for example, 15 seconds) during which the human body detection by 11 can be carried out stably, it becomes possible to accurately detect the human body when the swinging operation is stopped.

In addition, by controlling the number of times the human body is not detected by the human body sensor 11 in S312 and S412 only when the human body is not detected for the first time or consecutively from the previous time, the person taking the heat can operate the electric heater 1. When the robot moves away from the surroundings for a short time and returns, the swing motor 21 is stopped and the human body sensor 11 detects a human body, even if it is determined that no human body is detected, it is continuously determined that no human body is detected. If no human body is detected, the count number will be reset, so that energy-saving operation will not be started unexpectedly when the person who takes the heat leaves the area around the electric stove 1 for a short time.

In addition, by controlling the system so that it does not shift to energy-saving operation unless the number of counts in which it is determined that no human body is detected by the human body sensor 11 in S315 and S316 reaches 20 or more consecutive times, the pyroelectric type that detects a human body based on temperature changes can be used. The human body sensor 11 determines that there is no human body nearby if there is no temperature change, so if the person standing still around the electric stove 1 was unable to detect a human body, the human body sensor 11 could not detect a human body. Since the control is carried out over a long period of time when the number of counts determined as none is 20 or more, and the human body is detected by the human body detection sensor 11 at various angles, it is possible to detect the human body more accurately and save energy appropriately. It becomes possible to shift to driving.

As described above, when the human body sensor 11 is installed in the main body case part 5 of the electric stove 1 and the swing motor 21 is driven to perform the swing operation of the main body case part 5, the human body switch 20 is turned on. If swinging operation is performed when performing energy-saving operation control, the human body sensor 11 will not detect a human body while the swinging motor 21 is being driven for a predetermined time or a predetermined number of drives, and When the number reaches the number, the swing motor 21 is stopped and the human body sensor 11 starts detecting a human body, and if the presence of a human body cannot be detected continuously a predetermined number of times or more, the control shifts to an energy-saving operation in which the output of the heating element 2 is reduced. By doing so, it is possible to improve the accuracy of human body detection by the pyroelectric human body sensor 11 that detects the presence of a human body from changes in ambient temperature, and to appropriately transition to energy-saving operation. When the human body sensor 11 detects the presence of a human body, the output of the heating element 2 is returned to the original set value and the oscillating motor 21 is driven to return to the operating state before the energy saving operation, so it takes time and effort to cancel the energy saving operation. This improves the user experience for those taking heat.

In addition, the range for human body detection is determined based on the movable range set by the user, and the human body detection position is shifted each time so that it is not biased in one direction, so human body detection can be performed over a wider range. At the same time, it is possible to reliably prevent erroneous determination that no one is present even though there are people present.

Note that the present invention is not limited to this embodiment, and may be modified without changing the gist. For example, in this embodiment, when the swing switch 17 is pressed, the swing motor The position at which the robot starts driving is set as the initial position, and the next human body detection position is determined by the number of drives or a predetermined time from the initial position, but the first human body detection position after the swing switch 17 is pressed is as follows. After the control unit 23 performs the initial operation to specify the position of the swing motor, by calculating the number of drives or a predetermined time, it is possible to ensure that the swing motor 21 is at the maximum angle of the movable range or at the center of the movable range. It can be stopped.

The angle, reciprocation values, minimum drive number, etc. described in this embodiment may be changed as appropriate, and the values may be set more finely or larger.

1 Electric stove 2 Heating element 3 Base portion 4 Support body 5 Main body case portion 11 Human body sensor 17 Swing switch (movement range setting means)
20 Human body switch 21 Swing motor 23 Control section 26 Motor control means 27 Notification section

Claims (7)

A main case part with a heating element on the front,
a support body that supports the main body case portion;
a base part installed at the bottom of the support;
a swing motor that swings the main body case portion left and right;
A movable range setting means for setting a movable range for causing the head to swing;
a swing switch that starts driving the swing motor;
a human body sensor that detects the presence of a human body provided in the main body case;
a human body switch that causes the human body sensor to start human body detection;
An electric stove comprising: a control unit that controls the output of the heating element based on the detection result of the human body sensor;
The swing motor is composed of a stepping motor,
The control unit is configured to cause the swing motor to move at a maximum angle of the movable range set by the movable range setting means or at a predetermined human body in the center of the movable range based on the movable range set by the movable range setting means. comprising a motor control means for calculating and controlling the number of drives of the stepping motor so as to stop at the detection position;
When the swing switch and the human body switch are turned on, the control unit:
When the swing motor is driving, the human body sensor does not detect a human body,
When the swing motor is driven by the calculated number of drives after starting to drive, the swing motor is stopped at the predetermined human body detection position, and the human body sensor starts detecting a human body. Features an electric stove. A main case part with a heating element on the front,
a support body that supports the main body case portion;
a base part installed at the bottom of the support;
a swing motor that swings the main body case portion left and right;
A movable range setting means for setting a movable range for causing the head to swing;
a swing switch that starts driving the swing motor;
a human body sensor that detects the presence of a human body provided in the main body case;
a human body switch that causes the human body sensor to start human body detection;
An electric stove comprising: a control unit that controls the output of the heating element based on the detection result of the human body sensor;
The control unit is configured to cause the swing motor to move at a maximum angle of the movable range set by the movable range setting means or at a predetermined human body in the center of the movable range, based on the movable range set by the movable range setting means. comprising a motor control means for calculating and controlling a predetermined time from the start of driving the oscillating motor to the stop of driving the oscillating motor so that the oscillating motor stops at the detection position;
The control unit, when the swing switch and the human body switch are turned on,
When the swing motor is driving, the human body sensor does not detect a human body,
When the swing motor is driven for the predetermined period of time after the swing motor starts driving, the swing motor is stopped at the predetermined human body detection position, and the human body sensor starts detecting a human body. Stove. When the motor control means stops the oscillating motor, at least the oscillating motor is stopped at one of the maximum angle of the movable range set by the movable range setting means or the center of the movable range. and the stop position of the oscillating motor is varied each time so that it is either the left end of the maximum angle of the movable range, the center of the movable range, or the right end of the maximum angle of the movable range. The electric stove according to claim 1 or 2, characterized in that: The motor control means calculates a drive amount necessary for driving the swing motor from the human body detection position to the next human body detection position to be greater than at least a predetermined minimum drive amount. The electric stove according to any one of claims 1 to 3, characterized in that: The control unit counts the number of times the human body sensor does not detect a human body in succession, and when counting a predetermined number of times or more, stops the swing motor and reduces the output of the heating element. The electric stove according to any one of claims 1 to 4. The electric stove according to claim 5, further comprising a notification unit that notifies when the swing motor is stopped and the output of the heating element is reduced. If the presence of a human body is detected by the human body sensor after stopping the swinging motor and reducing the output of the heating element, the control unit drives the swinging motor and returns the output of the heating element to the original setting. 7. The electric stove according to claim 6, wherein the electric heater is configured to return to the original value.

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