JPH025793A - Electric fan - Google Patents

Abstract

PURPOSE:To automatically control driving of oscillating device according to man's movement by using a sensor to detect man's existence and a direction sensor to detect a direction of the head of an electric fan. CONSTITUTION:Plural man detecting sensors 11, 12, 13 outputs a man detecting signal if a man is in either one of detecting areas. A control device 24 is scanning whether there is an input of a man detecting signal or not and when it is judged that a man detecting signal is one by its scanning, a motor 7 for driving a vane is driven. Driving of an oscillating motor 8 is controlled on the basis of direction detecting signals from direction sensors 16, 17, 18 so that the direction of the head of an electric fan may be oriented to the detection range of the corresponding man detecting sensors 11-13. Thus, when a man is present, it is possible to detect it and to automatically send wind in the direction to the detected target.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an electric fan equipped with a human detection sensor and a direction sensor.

(Prior Art) In recent years, electric fans have been designed to detect the presence or absence of a person using a human detection sensor, and when the presence of a person is detected, to automatically operate the fan by driving a blade drive motor. is considered.

This type of electric fan not only detects the presence of a person, but also detects the direction in which the person is located and controls the head of the fan to swing in that direction, thereby blowing air in the direction that follows the movement of the person. The present applicant has invented the invention and has already filed an application (Japanese Patent Application No. 136028/1982). This device is equipped with multiple human detection sensors with different detection ranges, and when one of the human detection sensors detects a person,
The configuration is such that the head of the fan is directed in that direction to perform air blowing operation.

(Problem to be solved by the invention) However, in the above-mentioned device, there was a problem that could be improved in that when multiple people were within the detection range of the light human detection sensor, air could only be blown in one direction. .

The present invention has been made in view of the above circumstances, and its purpose is not only to detect the presence of a person and perform automatic ventilation operation, but also to detect the presence of a person in each direction where a person is present, even if multiple people are detected. The goal is to provide a fan that can always send good air to the area.

[Structure of the invention] (F stage for solving the problem) The present invention includes a fan head that has a blade drive motor and is supported on a base so as to be swingable, and a fan head that swings the fan head. a head oscillation device, a plurality of person detection sensors provided on the base side to detect the presence of a person within a detection range of each light direction, a direction sensor that detects the direction of the head of the electric fan, and each person It scans whether or not a human detection signal is input from the detection sensor, and when a human detection signal from one human detection sensor is input, the blade drive motor is driven and the blade drive motor is moved to the detection range of the corresponding human detection sensor. Driving and controlling the four-shake device based on the direction detection signal from the direction sensor so as to align the direction of the fan head, and controlling the blade drive motor when human detection signals from a plurality of human detection sensors are input. Drive control of the shaking device based on the direction detection signal from the direction sensor so that the head of the fan is driven and oscillated back and forth between the detection ranges of the person detection sensors on both sides among the plurality of corresponding person detection sensors. and a control device.

(Function) Each of the multiple human detection sensors detects when there is a person within its detection range.
:, then outputs a human detection signal. The control device scans the presence/absence of human detection fi° input, and when it is determined from the scan that there is only one human detection signal input, it drives the blade drive motor and The head oscillation device is driven and controlled based on the direction detection signal from the direction sensor so that the direction of the fan head matches the detection range of the corresponding person detection sensor, and if there is a person, it is detected and the direction is adjusted. Automatically blows air. In addition, when it is determined that there is a human detection signal input from multiple human detection sensors, the blade drive motor is driven and the fan is operated between the detection ranges of the human detection sensors on both sides of the corresponding human detection sensors. The shaking device is driven and controlled based on the direction detection signal from the direction sensor so as to swing the head back and forth. Therefore, when a plurality of people are present, this can be detected and the air can be automatically blown to the area where the plurality of people are present.

Also, when a person moves and another person detection sensor outputs a person detection signal, the control device swings the fan head 6 degrees within the detection range, so even if the person moves, the air will not be blown in the direction the person moved. You can change the direction.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

First, in FIGS. 2 and 3, 1 is a base having a column 2, and 3 is a fan head which is swingably attached to a neck support 4 at the upper end of the column 2 via a stud 5. The electric fan head 3 includes a blade drive motor 7 and a portrait motor 8 (both shown in FIG. 1) inside a cover 6.
It is provided with a blower blade 9 rotated by a single blade drive motor 7 and a protection net 9a surrounding the blower blade 9. The oscillating motor 8 constitutes a lifting device (not shown) together with a gear transmission mechanism (not shown), and the motor 8 is a DC motor. However, this swing motor 8
When current is applied in one direction, it rotates in one direction, causing the fan head 3 to swing in the direction of arrow X in FIG. 5, and when current is applied in the opposite direction, the fan head 3 swings in the direction of arrow Y. make him shake his head. The center of swing of the electric fan head 3 is indicated by the symbol P in FIG. 10 is a human detection sensor arrangement section formed at the base end of the support column 2, and this human detection sensor arrangement section 1
For example, three human detection sensors 11□ 12, 1.
3 are arranged so that the presence of a person can be detected within a 6° swing range of the electric fan head 3 within a light detection range. Each person detection sensor 11, 12, 13 consists of an infrared sensor. In this case, the human detection sensor 11 detects an angular range a on the left side (direction of arrow A) in FIG. The detection sensors 13 each have an angular range C on the right side (in the direction of arrow C) as a detection range. Then, each person detection sensor 11, 12, 13 detects when a person is present in the detection range, and
A human detection signal Sma, a second human detection signal Smb, and a third human detection signal Smc (see FIG. 1) are output.

On the other hand, 14 is a direction sensor, which is a light emitting diode 1 disposed at the center of the rear surface of the protective net 9a of the fan head 3.
5, and position detection elements 16, 17, and 18 provided on the neck support 4 and made of, for example, a phototransistor. Thus, when the direction of the fan head 3 reaches the direction indicated by the arrow A, the position detection element 16 faces the light emitting diode 15 and generates a first direction detection signal Ska (see FIG. 1). Similarly, the position detection cable 17 outputs a second direction detection signal Skb when the direction of the fan head 3 reaches the direction shown by arrow B, and the position detection element 18 outputs a second direction detection signal Skb when the direction of the fan head 3 reaches the direction shown by arrow B. When the direction reaches the direction indicated by arrow C, a third angle detection signal Skc is output.

Reference numeral 19 denotes an operation section provided on the top surface of the base 1, and as shown in FIG. Automatic operation switch for 20. An air volume changeover switch 21, a timer switch 22 for setting a time limit for timer operation and starting the operation, an operation stop switch 23, and the like are provided.

Next, in FIG. 1, 24 is a control device, which includes, in addition to the operation control circuit 25 consisting of a microcomputer,
It is configured with drive circuits 26 and 27 for each motor. The drive circuit 26 controls the power supply to the blade drive motor 7 based on the control signal from the operation control circuit 25, and the drive circuit 27 has a DC power supply circuit for the motor therein.
Based on the control signal from the operation control circuit 25, the direction of the current to the swinging motor 8 is changed and the current is controlled to be turned on and off. 28 is a DC power supply circuit that converts the commercial AC power supply Vac into DC power, and the DC power supply is connected to the operation control circuit 2.
5 as a side power source.

The operation control circuit 25 also includes the human detection sensors 11 and 12 described above.
．． Person detection signals Sma, 5rnb, and Smc are provided from 13, respectively, and orientation detection signals S are provided from position detection cables 16, 17, and 18 of the orientation sensor 14, respectively.
ka, Skb, and Skc are given.

The operation control circuit 25 has an automatic operation control program, and according to the program controls the blade drive motor 7 and the d-swing motor 8 as shown in the flowchart shown in FIG.

The control function of the operation control circuit 25 will now be described. Now, when the automatic operation switch 20 is turned on, an automatic operation control program is executed, and the control contents are shown in FIG. When the automatic driving switch 20 is turned on, first, as can be seen from steps S1 to S7 in the figure, the human detection signals Sma, Smb, S
Scan the input status of mC. That is, it is determined whether or not a person is present in the detection ranges a, b, and c of each person detection sensor 11, 12, and 13. In this case, the pattern of presence/absence of a person (7) in the detection range of each sensor is (1)
If there is no person in each detection range a, b, or c, (II) As shown in FIG.
(indicated by the symbol rMJ in the figure) exists, (III)
(IV) If there is a person only in detection range C, (V) If there is a person in detection ranges a and b as shown in Figure 9, (Vl) ) 1st
As shown in Figure 1, if there are people in detection ranges a and C, (■) As shown in Figure 10, if there are people in detection ranges A and C, (■) As shown in the figure,
There are eight cases in which a person exists in detection ranges a, b, and C.

In the case of (1), it is determined in step S1 whether the human detection signal Sma is input ``H'', and it is determined that there is no input, and in the next step S2, when it is determined whether the human detection signal Smb is input, Determine whether there is no input and proceed to the next step S
In determining whether the human detection signal Smc is input in step 3,
Determine whether there is no input. Thereafter, the process moves to step S8, and it is determined whether or not such a state of no input has continued for one minute. If it has not continued, the process returns to step S1, and if it has continued, the process moves to step S9. In this step S9, the blade drive motor 7 is cut off. In this case, if the blade drive motor 7 was originally cut off, the cut-off state continues. After this, proceed to the next step S10,
Until the position detection signal Skb is input, the a-swing motor 8 is driven by passing a one-way current or a reverse current, thereby causing the fan head 3 to swing. is facing forward.

In the case of (II) (see Fig. 8), the answer is YESJ in step S1, and the process moves to step S4, and the judgment in step S4 as to whether the signal Smb is input determines that there is no input, and in step S6 the signal Smb is input. It is determined whether there is an SmC input or not, and the process moves to step Sll.

In this step S11, the blade drive motor 7 is energized to move it to the position detection signal S ka
The starting motor 8 is driven until the position detection signal Ska is input, and when the position detection signal Ska is input, the drive of the motor 8 is stopped. As a result, the fan operation is performed with the fan head 3 facing the detection range a of the human detection sensor 11. After this, the process returns to step S1. If the state is still in (11) at the time of this return, the above-mentioned process is repeated. Furthermore, if a person moves into the detection range of either of the other sensors 12 and 13, the human detection sensor 1 is sent instead of the human detection signal Sma.
Since the human detection signal Smb or Smc is output from either of the terminals 2 and 13, a routine different from the one described above is executed. Moreover, in the case of (III), step S1
rNOJ of step S2, rYESJ of step S2, step S
After the rNOJ of 7, the process moves to step S12.

In this step S12, the blade drive motor 7 is
At the same time, the oscillating motor 8 is driven until the position detection signal Skb is input, and when the position detection signal Skb is input, the drive of the motor 8 is stopped. As a result, the fan head 3 faces the detection range of the human detection sensor 11, and the fan operation is performed. Also,
In the case of (IV), the process moves to step 513 via rNOJ in step S1, rNOJ in step S2, and rYESJ in step S3. In this step S13,
While energizing the blade drive motor 7 to drive it,
The swing motor 8 is operated until the input of the position detection signal Skc is a.
When the position detection signal Skc is input,
The drive of the motor 8 is stopped.

In this case, as described above, the fan head 3 is connected to the human detection sensor 1.
The ventilation operation is performed in a state facing the detection range C of No. 1.

Furthermore, in case (V) (see Figure 9), step S
The process proceeds to step S14 through rYESJ of step S1, rYESJ of step S4, and rNOJ of step S5. In step S14, the blade drive motor 7 is energized to drive it, and at the same time, a unidirectional current is passed to the oscillation motor 8 to drive the fan head 3 until the position detection signal Ska is input. When the position detection signal Ska is input, the direction of the current flowing through the motor 8 is reversed, and the fan head 3 is swung in the opposite direction), and this time, When the position detection signal S Ic b is input, the current flowing through the reprimand motor 8 is reversed in one direction again, and this is repeated. As a result, the fan head 3 is located between the detection range of the corresponding person detection sensor.
The air blowing operation is performed while oscillating the air back and forth. Also (■
) (see Figure 10), rNOJ in step S1,
rYESJ in step S2, rYESJ in step S7
After that, the process moves to step S15. This step S15
Now, power is applied to the blade drive motor 7 to drive it, and at the same time, a current is applied in one direction to the oscillation motor 8 to drive the fan head 3 in one direction until the position detection signal Skb is input. When the position detection signal Skb is input, the direction of the current flowing through the motor 8 is reversed, and the fan head 3 is oscillated in the opposite direction), and then the position detection signal Skb is input. When Skc is input, the current flowing through the lens barrel swinging motor 8 is reversed in one direction again, and this process is repeated.

Furthermore, in the case of (VT) (see FIG. 11), the process proceeds to step 816 via rYEsJ in step S1, "NO" in step S4, and rYEsJ in step S6. In step 816, the blade drive motor 7 is energized to drive it, and at the same time, a unidirectional current is passed to the d swing motor 8 to drive the fan head until the input of the position detection signal Ska becomes white. 3 in one direction), and when the position detection signal Ska is input, the direction of the current flowing through the motor 8 is reversed, and the fan head 3 is swung in the opposite direction), and This time, when the position detection signal Skc is input, the current flowing through the swing motor 8 is reversed in one direction 1if times.As a result, the head of the fan is moved between the detection range of the corresponding person detection sensor. The blower operation is performed while oscillating the valve 3 back and forth.
In the case of (■) (see Figure 12), r in step S1
YESJ step S4 rYEsJ, step S5 r
After YESJ, the process moves to step S16 as described above, so that the same processing as described above is performed.

As can be seen from the explanation so far, the operation control circuit 25 of the control device 24 scans the human detection signals Sma to Smc input from the human detection sensors 11 to 13, and in this scan, the human detection signals Sma to Smc are inputted from the human detection sensors 11 to 13. When any of Smc is input, the blade drive motor 7 is energized to drive it, and the direction sensor 1 is set so that the direction of the fan head 3 matches the detection range of the corresponding person detection sensor.
Direction detection from 4 1 = No. Ska or Skb or S
Based on kc, the portrait motor 8, which is the drive source of the portrait device, is driven and controlled, and when a person is detected, air is blown in the direction where the person is present. Further, when a human detection signal is input from a plurality of (in this embodiment, three at most) human detection sensors, the blade drive motor 7 is driven, and the blade drive motor 7 is driven.
Both sides of the applicable human detection sensors (if there are two applicable human detection sensors, the two human detection sensors themselves correspond to the human detection sensors on both sides, and in the case of three, the middle human detection sensor 12 is excluded) Both person detection sensor 11.13
The orientation detection signal S k a from the orientation sensor 14 is such that the electric fan head 3 is swung back and forth four times within the detection range of the human detection sensor (which corresponds to this).

The 6-shake device is driven and controlled based on Skb and Skc.

Therefore, when a person detection signal is input from two or more person detection sensors, there are multiple people present (1: The fan head can be swung to the right extent to blow air into the area. .

Furthermore, even if a person moves to any of the detection ranges A to C while air is being blown by inputting a person detection signal,
After the movement, a human detection signal from one of the human detection sensors is input, so depending on the input state, the fan head 3
Since the direction of the airflow is changed, even if someone moves, the direction of the airflow can be changed to the direction of the movement.

Note that the present invention is not limited to the above embodiments,
For example, the following changes may be made.

In other words, the placement position of the human detection sensor does not have to be at the base end of the column as long as it is on the base side, and furthermore, the position detection element and light emitting diode of the orientation sensor may be installed depending on the position of the person detection sensor and the position detection element. The number etc. can also be changed as appropriate. Further, the orientation sensor may be configured by a combination of a reed switch and a magnet.

In addition, it goes without saying that the present invention can be implemented with various modifications within the scope of the invention.

[Effects of the Invention] As is clear from the above description, the present invention includes a fan head that has a blade drive motor and is swingably supported on a base, and a fan head that swings the fan head. a head oscillation device, 11i number of human detection sensors provided on the base side to detect the presence of a person in detection ranges each having a hole direction, a direction sensor for detecting the direction of the head of the electric fan, and each of the above-mentioned sensors. It scans whether or not a human detection signal is input from a human detection sensor, and when a human detection signal from one human detection sensor is input, the blade m drive motor is driven and the corresponding human detection sensor is detected. The 6° vibration device is driven and controlled based on the orientation detection signal from the orientation sensor so that the direction of the fan head is aligned with the range, and when the human detection signal from the human detection sensor of m number is input, the blade While driving the drive motor, the head of the fan is reciprocated between the detection ranges of the human detection sensors on both sides among the plurality of corresponding human detection sensors.
a control device that drives and controls the front = e, -b shaking device based on the direction detection signal from the direction sensor so as to cause the device to shake.
With this, it is possible to detect the presence of a person and automatically operate the fan, and also automatically orient the fan head in the direction of the person's movement. You can always control the direction of the wind in the direction of people, and even if there are multiple people, you can blow the air in the direction of the people. It has a great effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a block diagram of the electrical configuration, Figs. 2 and 3 are perspective and side views of the entire electric fan, and Fig. 4 shows the arrangement of the human detection sensor. 5 is a plan view showing the arrangement of the orientation sensor, FIG. 6 is a plan view of the operating section, FIG. 7 is a flowchart showing control details, and FIGS. 8 to 12 are operation diagrams. It is a schematic plan view of the human detection sensor part for explanation. In the figure, 1 is a base, 3 is a fan head, 7 is a blade drive motor, 8 is a portrait motor (portrait device), 9 is a blower blade, 11 to 13 are human detection sensors, and 14 is a orientation sensor,
15 is a light emitting diode, 16 to 18 are position detection elements,
24 is a control device, and 25 is an operation control circuit.

Claims (1)

[Claims] 1. A fan head that has a blade drive motor and is swingably supported on a base, a swing device that swings the fan head, and a human detection range in different directions on the base side. A plurality of person detection sensors installed to detect the presence of a fan, an orientation sensor that detects the direction of the head of the fan, and a plurality of person detection sensors that scan the presence or absence of input human detection signals from each of the person detection sensors. When the human detection signal from the human detection sensor is input, the blade drive motor is driven and the orientation detection signal from the orientation sensor is used to align the direction of the fan head with the detection range of the corresponding human detection sensor. When human detection signals from a plurality of human detection sensors are input, the blade drive motor is driven and the human detection sensors on both sides of the corresponding plurality of human detection sensors are controlled. a control device that drives and controls the swinging device based on a direction detection signal from the direction sensor so that the head of the fan swings back and forth between the detection ranges.