JPH04197415A - Blowing apparatus - Google Patents

Abstract

PURPOSE:To enhance the adaptability to the sensation of a person by dividing the output of a human body detection sensor to issue two or more human body detection ranks according to the movement degree of a person in a timewise process and dividing the output of an air contamination sensor to issue two or more air contamination degree ranks and combining both ranks with a matrix table. CONSTITUTION:A human body sensor control circuit 15 is connected to a main control substrate 17 and an air contamination sensor control circuit 19 using a metal oxide semiconductor is also connected to the main control substrate 17. The output of the human body sensor control circuit 15 is issued as two or more human body detection ranks according to the movement degree of a person in a timewise process while the output of the air contamination sensor control circuit 19 is divided from the contamination concn. ratio to a reference value to output two or more air contamination degree ranks. The operation of an electromotor 8 is controlled by combining the human body detection ranks and the air contamination degree ranks with a matrix table. By this method, a blowing apparatus allowed to approach the sensation of a person is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an air blower, and more particularly, to an electric motor speed control, that is, operation (ON), speed adjustment, and stop (OFF).
) is automatically performed using sensor output and electronic control means.

[Conventional technology]

JP-A-1-52556 discloses that a human body sensor detects and outputs infrared rays when there is movement of a person to control the operation of a motor for an air purifier or air conditioner. Furthermore, sensor circuits are often used to detect the degree of air contamination, which utilizes the characteristic that resistance changes when air contamination gas adheres to a metal oxide semiconductor.

For example, when smoking, reducing gases such as hydrogen diffuse, changing the sensor output in an analog manner. This output is divided into 4 levels of maximum output value, the 1st level is stopped, the 2nd level is
By connecting the circuit to the electric motor so that the rotational speed changes in 1 to 3 steps, it is possible to automatically correct the looseness of weak, medium, and strong operation. By setting the sensor output indicating the degree of dirt and the speed change from weak to strong in a proportional direction, when it is dirty, the speed (circulation) increases the cleaning ability.

[Problem to be solved by the invention]

Human senses have a large element in sensing the degree of air pollution through depth and vision, but other sensual judgments are also involved, and even if we try to detect these with artificial sensors, there are many aspects that are difficult to detect.

However, it is possible to control as much as possible in the direction preferred by the user, and the present invention creates a specific relationship between the combination of a human body sensor and an air pollution level sensor, etc., thereby improving adaptability to human senses and driving speed. This is intended to save time and energy.

[Means to solve the problem]

The specific relationship refers to the output of the human body detection sensor,
This is done by combining the two into a matrix table by ranking human body detection in multiple stages based on the movement and degree of human movement over time and ranking the degree of air pollution in multiple stages based on the output of air pollution sensors.

[Effect]

The electric motor is controlled with the output selected by the matrix table, and cleaning is performed by the purifying means.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained below with reference to the drawings.

In FIG. 1, a main body 1 includes an inlet 2 and an outlet 3, and a remote control 4 sends a signal to a control section 5 to select an operation mode. Note that signals can be input to the control unit 5 not only by the remote controller 4 but also by the switch 6 on the main body side.

Fig. 2 shows the internal structure of the main body 1. 7 is a centrifugal fan that forms a circulating flow, and is connected in such a way that it draws air from the left and right sides of one fan, and the electric motor 8 has a shaft that extends to the left and right. It has a shape that allows two fans to rotate at the same time. Reference numeral 9 denotes a purification filter, which removes dust and deodorizes using an electret filter, activated carbon filter, or the like. Due to the rotation of the electric motor 8 and fan 7, the circulating air flows as shown by arrow A.
It is formed like B. When the capacity of the filter 9 begins to decline (usually after a set usage time), the filter 9 is removed with the filter frame 11 by opening the filter take-out cover 10 of the main body 1, and the filter 9 is replaced.

Figures 3 and 4 show the output of the human body sensor, where the horizontal axis is the time change (unit: seconds) and the vertical axis is the normal O.
This is to explain that what is in the FF state detects a change in infrared rays and outputs it in the ON state in the form of a pulse wave.

FIG. 5 shows an outline of the human body sensor circuit, and shows a pyroelectric element 12, a Fresnel lens 13, an amplifier 14, and a human body sensor control circuit 15.

FIG. 6 shows a control circuit for the motor 8. Power is input from the power cord 16 to the main control board 17, forming a motor speed control output circuit. 18 indicates a transformer for the board control circuit. The human body sensor control circuit 15 is connected to the main M# board I7. Similarly, an air pollution sensor control circuit 19 using a metal oxide semiconductor is also connected to the main control board 17. 20 indicates a motor capacitor.

FIG. 7 shows an example of the output characteristics of the degree of air pollution (output of the air pollution sensor). Characteristic C is expressed in the form that, for example, when smoking, the resistance of the air pollution sensor decreases, the current increases, and the output voltage V increases. In the present invention, the motor speed is controlled according to multiple air pollution levels. Specifically, when the motor speed is v1 or more, the motor speed is set to 1, when it is 78 or more, the motor speed is set to 2, and when it is 73 or more, the motor speed is set to 3. ■The following will be suspended. Strictly speaking, the reference voltage V0 is updated to follow environmental changes every set time.
The basic idea is the same as the above explanation.

Therefore, the air pollution level is 01■1~ below v1.
V corresponds to 1, and 2 to 2 correspond to 2.71 or more, which corresponds to 3.

FIG. 8 is a rank explanatory diagram (human body detection rank diagram) of the human body sensors shown in FIGS. 3 to 5. FIG. The human body detection rank of the present invention divides the output of the human body detection sensor into multiple intervals within a set time, detects it as a count number, and further outputs this as a human body detection rank of multiple levels depending on the size of the count number. . To explain this in concrete terms, for example, it is checked every 1 mS, and if there is an output from the human body sensor twice or more in one minute, it is counted as 1. The reason why this is done twice or more is to prevent malfunctions due to other factors, and the effective output for 10 minutes is counted. FIG. 8 shows the rank determined based on the count number.

If the count is O, rank is 1, and if the count is 1 to 5, rank is 1.
6 to 10 are rank 2.

Figure 3.4 is an example of the output before replacing it with a count.
The figure shows an example of the action of drinking a drink, and Fig. 4 shows an example of smoking. In both cases, when there is a large movement of the limbs, the output is in the form of a pulse wave.
For regular movements, the count is usually 1 to 3, which corresponds to rank 1, and for small movements such as reading or sleeping, it is often not counted and ranks 0. When there is movement such as cleaning, the count will usually be 6 or more and rank 2.

FIG. 9 is a diagram showing a matrix of human body detection ranks and air pollution ranks. How to read this diagram is to show that, for example, when the human body detection rank is 1, the motor stops at air pollution level 0, and when the air pollution level becomes 1, the motor rotates at speed l (motor speed 1). The meaning is explained in Figure 7).

The human body detection rank changes slowly every 10 minutes, but the air pollution rank is output every 2 seconds to improve responsiveness. In addition, the human body detection rank is 1 in the case of the example.
Since it is determined by the number of counts at 0 minutes, it is necessary to specify the initial 10 minutes.

As an air purifier, it is considered best to keep it in the direction of movement for the first 10 minutes when the power is turned on, and the human body detection rank is initially set to the higher rank 2 (.

Figure 10 is a more detailed development of the idea in Figure 9, with the aim of making the movement more delicate. The amount of change compared to the previous level of contamination is calculated, and combined with the human body detection rank of 0.1.2, which is the same as in Figure 9, the total No.
, which instructs 15 types of combination operations. Since the air pollution level changes in a curved manner, the difference compared to Figure 9 is small, but this example shows a more detailed response by incorporating the amount of change between the current air pollution level and the previous air pollution level. It is something.

〔Effect of the invention〕

This will be explained using the matrix diagram shown in FIG. When using the device to generate dust, such as cleaning, the human body detection rank usually exceeds 6 and ranks 2 based on the degree of human movement. Therefore, it is possible to operate and purify the air even when the air pollution rank is 0, which is a desirable control. This effect occurs because the air pollution sensor uses a metal oxide semiconductor and is not a dust sensor. In addition, as an initial setting, the initial sensor count number is unknown, in this example, it is initially set to 1.
Since human body detection rank 2 is stored in memory for 0 minutes, this operation is possible even for the initial period. The next example is when you enter a room once and immediately leave. At this time, the human body detection rank becomes 1, and if the air pollution degree rank is O, unnecessary operation is not performed and energy-saving operation is performed. Even quiet activities such as reading usually have a human body detection rank of 1, and the same effect can be obtained. It can be understood from the matrix diagram that if the air pollution level is added, the combination of the air pollution level and the human body detection rank will result in the optimal operation for the situation. Next, the effects from the standpoint of stopping will be described. The air pollution sensor is a sensor that uses metal oxide semiconductors and outputs an output in response to reducing gases. Therefore, if there are gas components that cannot be purified by the air purifier's deodorizing filter, the air contamination level will not decrease from the initial high rank to the low rank unless the air purifier is operated for a long time and the natural ventilation effect of the room is not synergized. This can be estimated from the example of characteristic C of exponential decay shown in FIG. In particular, the air pollution rank tends to remain at 1 for a long time.In the present invention, as shown in the matrix diagram of Fig. 9, when the human body detection rank reaches O,
It's time to stop. Human body detection rank O refers to the example of sleeping, but in such a case, it is considered that enough time has passed since smoking and the smoke elements have been purified and the purifier can be stopped. The effect of energy-saving operation is also apparent in this respect.

In the example shown in Fig. 10, in addition to these effects, a variation element that reaches the current air pollution level is added to enable fine-grained control.For example, air pollution level rank 1, human body detection rank 1.
To explain this in terms of the combination, if the previous pollution level was rank 1, the amount of change is 0, and a small amount of air pollution continues, so motor speed 1 is specified. If the previous air pollution level was rank 2, the amount of change is minus 1, and the current air pollution level is rank 1. Therefore, even if the current value is 1, it is in the process of decreasing from 2 to 1, so the motor speed should be increased to 2.
This indicates that the vehicle must be driven in the following manner.

Although this example shows a device dedicated to air purification means, even an air conditioner that combines an air purification means and a heat exchanger may be suitable for matrix control that combines a human body detection sensor and an air pollution sensor. Therefore, the effects of the operation control of the present invention can be obtained.

The present invention has great practical value as it provides an air blower that is similar to human sensations.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main body showing an embodiment of the present invention, Fig. 2 is an exploded internal perspective view, Figs. 3 and 4 are illustrations of the human body sensor output, and Fig. 5 is a general explanation of the human body sensor circuit. Figure, 6th
Figure 7 is an explanatory diagram of the motor control circuit, Figure 7 is an explanatory diagram showing an example of the output characteristics of the degree of air pollution, and Figure 8 is an explanatory diagram of the ranks of the human body sensors shown in Figures 3 to 5 (human body detection rank diagram). ), Figure 9 is a diagram showing a matrix of human body detection rank and air pollution level rank, and Figure 10 is a diagram showing a matrix of human body detection rank and air pollution level rank, which is controlled by further dividing Figure 9 into finer details. . l... Main body, 2... Centrifugal fan, 8... Electric motor, 9... Purification filter, 15... Human body sensor control circuit, 17... Main control board, 19... Air Dirt sensor control circuit. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10

Claims (1)

[Claims] 1. In a blower device that has an air purifying means and purifies the air by circulating air, the output of a human body detection sensor is output as a human body detection rank of multiple levels depending on the degree and degree of human movement over time. On the other hand, the output of an air pollution sensor using a metal oxide semiconductor, etc. is classified based on the dirt concentration ratio to the reference value, and a multi-level air pollution level is output. Operation control is performed based on the human body detection rank and air pollution level described above. A blower device that is matrix-controlled. 2. The blower device according to claim 1, wherein the human body detection rank is initially set to a higher rank than a normal rank. 3. The blower device according to claim 1, wherein the output of the human body detection rank is divided into a plurality of intervals within a set time, detected as a count number, and further outputted as a human body detection rank depending on the size of the count number. 4. The blowing device according to claim 1, wherein the air pollution level rank is further classified by taking into account the amount of change between the current time and the previous time, and matrix control is performed.