JPH02133733A - Automatically operated ventilating fan - Google Patents

Abstract

PURPOSE:To make it possible to carry out proper ventilating operation at an air capacity responding with an operating status by carrying out remaining operation based on high air capacity and high notch ventilating operation induced by a high notch timer at a time interval when the output of a man detection signal disappears and a weak notch-based operation has started. CONSTITUTION:When a man detection signal read means 16 reads a man detection signal, a weak notch operation timer 18 starts its count directly after it is set, and outputs simultaneously the command of weak notch operation to a load drive means 17, and resets a high notch operation timer 19 so that a fan motor may carry out weak notch operation. When the output from the man detection signal read means 16 is out, the count ends with the lapse of time thus predetermined. At the same time, a high notch operation timer 19 is set. The high notch operation timer 19 outputs the command of high notch operation to the load drive means 17. With the output of the load drive means 17, it is connected with a high notch drive circuit of the fan motor so that the fan motor may carry out high notch operation or its residual operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatically operated ventilation fan that automatically ventilates a specific room such as a specific ventilation main part, that is, a specific room.

U Prior Art 0) Technique] This type of ventilation fan described above is disclosed in, for example, Japanese Patent Application Laid-Open No. 571-4.75.
It has a configuration as disclosed in Publication No. 99,
That is, as shown in FIG. 10, the detection signal of the infrared sensor 101 for large detection is input to the amplifier circuit 1.02,
The output of the amplifier circuit 102 is input to the low-pass filter 10. The AC amplified detection signal is
Unnecessary signal components such as instantaneous external components are removed by the low-pass filter 103 and transmitted to the AD conversion circuit 104. The A/D conversion circuit 10.4 is a low bass filter 10
3 is converted into a DC signal and output to the switching drive circuit 105 to operate the Suey-Notink drive circuit 105, and the power supply circuit of the fan motor 106 connected to the AC power supply or the switching circuit 107 outputs it to the switching drive circuit 105. In other words, the infrared sensor 101 installed in the ventilation fan detects the presence or absence of a person, and ventilation operation is automatically started to detect the presence of a person. Ventilation operation or automatic stop depending on presence or absence of detection]I
-・It is something that is done. Therefore, in 1 to ile etc.,
Ventilation operation can be automatically performed when a person enters the room, and automatically stopped when he or she leaves the room, and the ventilation can create an atmosphere that does not cause discomfort.

[Problems to be solved by the invention] (F) In today's self-driving ventilation fans, ventilation is performed at the same air volume both while people are in the room and for a while after they leave the room, so that it does not bother the people in the room. Due to the need to obtain a certain level of operating noise, the processing environment is likely to be low and insufficient ventilation.Even if ventilation is implemented after leaving the room, it will take a considerable amount of time to remove the odor in the toilet, or the odor will be removed. Ventilation operation will end with incomplete removal or incomplete ventilation.Rapid ventilation can be achieved by increasing the air volume, but increasing the air volume in a) means that the operating noise will not be bothersome to the people in the room. However, the detection area of the infrared sensor is not very wide, and the ventilation may be stopped even if there are friends in a large space.
It has only been applied to comfortable areas such as a toy room in a recessed house, and there is no solution to the problem, as the room temperature is quite low and if the ventilation is not performed properly, the ventilation operation will be carried out even in situations where there is a strong feeling of cold wind. I'm looking forward to the challenge.

This invention was made in order to solve such conventional problems, and it is possible to perform ventilation operation with an air volume that suits the situation, and it is possible to carry out more comfortable ventilation operation that can correspond to the size of the place and temperature conditions. The sole purpose of this project is to obtain a self-driving ventilation fan.

[Means for Solving the Problems] The automatic ventilation 1i according to the present invention has a strong notch/weak notch air blow switching means, and has a fan motor driven by a drive circuit, a differential type ventilation system based on infrared rays emitted by a person, and a fan motor driven by a drive circuit. An infrared sensor for human detection that outputs a signal, a signal detection circuit that detects the output of the infrared sensor, and a large detection signal that reads the large detection output from the output and forms an output signal for either a manned or unmanned person. A reading means, a weak notch operation timer which is sent to Sera 1 by the output signal of the person detection signal reading means of the person, is set to 7 pin 1 while this weak notch driving timer is operating, and is set to Sera 1 when the operation of the weak notch driving timer ends. 7. The strong notch operation timer that is triggered by ``2''...
The fan motor is provided with a load drive means for driving the drive circuit to operate the fan motor while the high notch operation timer and the strong notch operation timer are operating.

Another automatically operated ventilation fan according to the present invention is one in which the timer times of the weak notch operation timer and the strong notch operation timer and timer are made variable by a timer time setting means.

Furthermore, another self-operating ventilation fan according to the present invention is provided with a temperature sensor for detecting the room temperature of the main ventilation part, together with a signal reading means of the temperature sensor, in an operation control system using an infrared sensor for human detection. [Function] In the inventive self-driving ventilation fan, when there is no human detection signal based on the infrared edge sensor and there is no operation of the weak/sochi operation timer, the fan motor stops, and a detection signal based on the infrared sensor is output. (if applicable, please refer to above)...I
Chi operation type ＼7 always operates with low noise and low air volume.
Diventilation operation is performed, and ノ (detection signal output disappears and the above weak)...No 1-operation 9 imma ()) operation? On the thread
), the strong notch timer activates the strong notch timer.
Remaining operation with ventilation operation will be carried out.

In addition, in the self-operating ventilation fan for a pond according to the present invention, it is possible to adjust the recognition time or the remaining operation time from the detection of a large amount of air to the detection of an unattended person, depending on the size of the applicable place. Eighth, in the automatic ventilation fan for a pond according to the present invention, if there is a human detection signal, the detection value of the temperature sensor is lower than a predetermined temperature, and the ventilation operation is stopped or started if the temperature is significantly lowered due to ventilation. You can try to prevent it from happening.

[Embodiment] FIGS. 1 to 9 all show embodiments of the present invention, and FIG. 1 shows an embodiment of a control circuit for an automatically operating ventilation fan. That is, 1 connects the fan motor 3 to the commercial power supply 2.
is the ventilation fan body to which it is connected. The fan motor 3 has a tap with a strong notch and a weak notch, and is configured to be able to switch between two strong and weak levels of operation: low air volume and high scenery.

The control system that controls this futon motor 3 includes a DC power supply circuit 4 that forms a DC power supply for the control system from a commercial power supply 2, and an infrared sensor for human detection that outputs a differential signal based on the infrared rays emitted by a person. 5, the ventilation fan installation mainly consists of a temperature sensor 6 for detecting the temperature of the space, a microcomputer (hereinafter referred to as microcomputer) 7, a changeover switch 8, and a bidirectional Zyristor 9.10 for switching the air volume. 5 infrared sensor 5 is connected to a signal detection circuit 11 that amplifies the output appearing as voltage fluctuation and inputs it to the microcomputer 7. In addition, 12 and 13 are the resistors inserted on the No 1 side of the same-sex Zyristor 9 and 10, respectively, and 1-
1 is a resistor connected in series with the temperature sensor 6.
Ikoshi 7 is a temperature sensor that reads voltage changes based on resistance value changes due to temperature changes in the temperature sensor 6, as shown in Figure 2, which shows the program in function pro-I. Sensory signal reading means 1, etc., and 1 word detection circuit 11
A human detection signal reading means 16 is provided on the large Jj side to read the voltage fluctuation of the infrared sensor 5 amplified by the ire. 1. The output of the latter is input to the load driving means 7 which operates the fan motor 3-force drive circuit, and the output of the latter is input to the weak notch operation timer S. [Signal reading means] According to the output signal of the manned person 6, the cell 1~sit is read, and when the output signal of the unmanned person is read, it is read 1~. One strong notch operation timer is connected to the weak and notch operation timer S, and this one strong notch operation timer is connected to the low notch operation timer 8 when the weak notch operation timer 8 is reset and activated at 1-0, and the weak 2-knot operation timer is activated. When the count I of 8 is completed, the load driving means 17 operates the above drive circuit during the weak and high operation timer 1S and the strong and high operation timer 1S. Let them drive. The weak notch operation timer 18 and the strong notch operation timer 19 are set by the timer time setting means 20, respectively. The signal detection circuit 11 communicating with
As shown in the figure, 0 1 to 1 corresponds to the human movement speed of 11 mm.
[In a configuration in which a high gain voltage amplifier 21 having a bandpass characteristic of about 4Z is connected to an operation amplifier or a comparator 22, the output voltage of the high gain voltage amplifier 21 is connected to the non-inverting input side of the comparator 22. A reference voltage 23 is applied to the reverse inclination side.

Figure 4 shows the operating state of this automatically operated ventilation fan yJ ',' 3
Fig. 5 is a diagram showing the operation pattern from timing diagram 1 to 4. ) B) Or, if the vehicle is operating at low wind speed (D) in the first country, but if the air flow is high, it is operating at high wind speed (see Figure 4). The stopped state A is the state in which there is no one using the room (for example, L-F) with the ventilation fan body 1 installed. Low wind ta, weak force, ) - When the notch operation opening is reached and the room is no longer occupied, the low air volume weak notch operation Y7 shifts to the high air volume strong notch operation H.High air volume strong notch If there is an entry K again in the operating state C, the operating state changes to the weak notch operating state, and if no one enters the room, the state shifts to the stopped state A.8 In other words, when someone is in the room, the room is always entered with a low sound. Weak-nosode operation V7 with a low air volume so low that the person hardly notices is carried out, and the strong-air operation with a high air volume to ensure complete ventilation of the room as soon as the person leaves the room.
-7 to operation) or leftover operation.

Since the left-in operation is performed after leaving the room, it is somewhat noisy, but there is no problem, and it is good to be able to quickly ventilate the room.
In detail, the above operation is performed as follows5.
When the human detection signal reading means 16 does not read the human detection signal for a sufficiently long time (this can also be said to be a state in which there is an unoccupied detection signal), the load driving means 17'\ is activated by the weak notch operation timer 182 and the strong notch operation timer 19. No drive command is output, and the fan motor 3 is stopped. When the human detection signal reading means 16 or signal detection circuit 1 reads the human detection signal from the operational amplifier or comparator 22, the weak notch operation timer 18 is set.

The weak notch operation timer 18 starts with force r'7n1 immediately after being set.
-, and at the same time outputs a command for weak non-stop operation to the load drive means 17, and resets the strong...l operation timer 19.
do. When the human detection signal reading means 16 continuously reads the human detection signal, the weak notch operation timer 18 is also continuously set, and a weak notch driving command is continuously output to the load driving means 17. The output of the load drive means 17 connects the weak notch drive circuit of the fan motor 3, and the fan motor 3
performs weak notch operation. Next, when the output from the reading means 16 disappears (i.e., the person leaves the room), the weak notch operation timer 18 continues to perform the force 1 to 7 for the set timer period. As the time passes, the count ends, and at the same time, 1 strong, 1 nodge driving, and 1 imma are used.

The strong notch operation timer 19 outputs a command for strong notch operation to the load driving means 17, and the output of the load driving means 17 is connected to the strong notch drive circuit of the fan motor 3, so that the fan motor 3 is activated. Perform notch operation, that is, residual operation. (difficult) For left-behind operation, human detection signal reading means 1 () to 1)
If the output is not reached by the end of the count of the strong notch operation timer 19, the device continues until the set timer time J) of the strong notch operation timer 19 has elapsed. When there is an output from 16, the strong notch operation timer 19 is immediately reset.
A transition is made to a weak notch operation using the weak notch operation timer 18.

When the temperature sensor 6 detects a low temperature environment below the set room temperature, this output is read by the temperature sensor reading means 15, and a stop command is output from the temperature sensor reading means 15 to the load drive L stage 17. Then, the load driving means 17 stops the fan motor 3. In this case, even if there is a human detection signal, the fan motor 3 is stopped and ventilation operation is not performed. Therefore, under circumstances where ventilation would significantly deteriorate the temperature environment in the room, ventilation would be voluntarily removed.

The above-mentioned operations are as shown in timing diagrams 1 to 5 in FIG. t in the same figure, ~1. ．． ．． 1.2-1. are the weak notch operation timer 18 and the strong notch operation timer 19, respectively.
These are the timer times of the timer time setting means 2.
It is a variable element that can be adjusted by 0. Figure 6 shows the case where self-driving ventilation fans are installed in a small space, for example, toilets L1 to L1 of a private residence, and Figure 7 shows the case where multiple self-driving ventilation fans are installed in a large space, for example, public toilet I72. There is.

In the case of FIG. 6, if there is a person in areas 1 to 1 L, the person will always enter the person detection area of the infrared sensor 5, so it is easy to confirm whether there is a person. In the case of Fig. 7, there is no possibility that there is a friend on duty at the rear of each ventilation fan body (J), and when the human detection area is on the side of the friend (E7J j+), the presence of a person (0') is recognized as N. In other words, when applied to ) and Ll, shorten the timer time of the weak notch operation timer 18t7) and shorten the timer time of the weak notch operation timer 112. In the previous version, the timer time of the notch operation timer 19 was shortened by the timer time of the weak notch operation timer 18. 1 thing to do, 1 thing to do, 1 thing to do. Therefore, even in the application example with Isuno, ventilation operation close to proper ventilation can be performed.

In the illustrated example, when the contacts of the changeover switch S are switched, the timer time setting means 20 reads this and outputs an output to change the timer time to determine whether the operating time is 1.1 or 1. ()ru51,)(two-).

Figure 3 shows the voltage waveforms at 51 points and 2) points in 7 countries. The word is Miney 1 70) Human detection signal reading, 7L taken lower stage 1
6 is input. Figure 9 also shows the digital (J) figure in Figure 7.
.

Since we have expanded the signal, there is a narrow signal 2 of pulse ``11'' and a wide signal ``ho'' of pulse [1]. If any of the three confirmations are H level, it will be recognized and recognized as a human detection signal; Errors caused by external noise are now recognized as 1 and -)
I'm here.

[Effects of the Invention] As shown in F-F below, according to the self-operating ventilation fan of the present invention, when there is no human detection signal based on the infrared sensor and there is no operation of the weak notch operation timer, the fan motor stops, and human detection based on the infrared sensor occurs. When the signal is output, the weak notch operation timer always operates with low noise and low wind speed.
-1-
1. After the weak notch operation timer has been activated, the strong notch timer will temporarily operate the strong notch ventilation operation during high winds, and appropriate ventilation operation will be performed depending on the situation. becomes possible.

In addition to this invention, according to J) the self-operating ventilation fan, it is possible to adjust the recognition time from manned detection to unattended detection or remaining operation time depending on the narrowness of the applicable place. The proper ventilation capacity will be achieved accordingly.

Furthermore, according to another automatically operated ventilation fan of the present invention, when the detection value of the temperature sensor is below a predetermined temperature and the room temperature decreases significantly due to ventilation, the ventilation operation is started. can be stopped or prevented from occurring,
It is possible to voluntarily avoid the adverse temperature environment caused by ventilation.

In other words, any self-operating ventilation fan can perform ventilation operations according to the situation, and can create a more comfortable atmosphere in the room.

[Brief explanation of drawings]

A control circuit for an automatic ventilation fan invented by the first country (Hakozu) (
7') A circuit diagram showing one embodiment, Fig. 2 is a functional block diagram showing the configuration of the microcomputer in Fig. 1, Fig. 3 is a circuit diagram showing an embodiment of the signal detection circuit, and Fig. 4 is an automatic Figure 5 is an explanatory diagram showing the transition of operation of an operating ventilation fan, and Figure 5 is a timing chart showing the operation pattern of an automatic ventilation fan. An explanatory diagram showing the difference in human detection methods by Hiroshi, Fig. S is an explanatory diagram showing the output waveform of each point in Fig. 3, Fig. 9 is an explanatory diagram showing the signal recognition method of the microcomputer, and Fig. 10 is a conventional example. FIG. 2 is a circuit diagram showing a control circuit for an automatically operated ventilation fan. In the figure,
1 is the ventilation fan body, 2 is the commercial power supply, 3 is the fan motor, 5
is an infrared sensor, 6 is a temperature sensor, 7 is a microcontroller, 9
10 is a bidirectional thyristor, 15 is a temperature sensor signal reading means, 16 is a human detection signal reading means, 17 is a load driving means, 18 is a weak notch operation timer, 19 is a strong notch operation timer, 20 is a timer time setting means, 21 is high fl
1 fl voltage amplifier, 22 is a comparator. NaJ
3. Ibid., Ibid.-1) " indicates the same or an equivalent part.

Claims (3)

[Claims] (1) A fan motor that has a strong notch/weak notch ventilation switching means and is driven by a drive circuit, an infrared sensor for human detection that outputs a differential signal based on infrared rays emitted by a person, and this infrared sensor a signal detection circuit for detecting the output of the signal detection circuit, a human detection signal reading means for reading the human detection output from the output of this signal detection circuit and forming an output signal of whether the person is present or not; A weak notch operation timer that is reset while this weak notch operation timer is operating, and a strong notch operation timer that is set when the weak notch operation timer ends, and a strong notch operation timer that is reset while the above weak notch operation timer and strong notch operation timer are operating. It is equipped with a load drive means that operates the drive circuit and operates the fan motor, and is stopped when there is no human detection signal based on the infrared sensor and no operation of the weak notch operation timer, and a human detection signal based on the infrared sensor is output. When the weak notch operation timer is activated, the weak notch ventilation operation is always performed by the operation of the weak notch operation timer, and after the output of the human detection signal is stopped and the operation of the above weak notch operation timer, the strong notch timer is activated to perform the strong notch ventilation operation for a limited time. A self-driving ventilation fan characterized by being configured to operate. (2) The automatically operating ventilation fan according to claim 1, characterized in that the timer times of the weak notch operation timer and the strong notch operation timer are configured to be variable by timer time setting means. (3) A temperature sensor that detects the room temperature of the main ventilation part is installed together with a signal reading means of the temperature sensor, and only when there is a human detection signal, ventilation is started when the detected value of the temperature sensor is below a predetermined temperature. 3. The automatically operating ventilation fan according to claim 1 or 2, wherein the ventilation fan is stopped or not performed.