JPH0530509B2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention detects that a person is using a place emitting a bad odor, and automatically sprays a spray deodorizer, aromatic agent, etc. The present invention relates to a sensing spray activation device.

BACKGROUND ART Conventionally, it has been common practice to install sublimable solid or evaporative liquid air fresheners in places with bad odors, such as washrooms and toilets, to alleviate the bad odors.

In addition, in recent years, deodorizers and air fresheners have been made into sprays, and when a person presses a knob on the head with their hand, the gas pressure inside the can can spray the deodorizers and air fresheners. Those that can be changed are also used.

Problems to be Solved by the Invention However, the above conventional means for neutralizing bad odors has the following problems.

(1) In the use of sublimable solids and evaporative liquid fragrances, bad odors and good odors actually coexist, and bad odors cannot be completely eradicated or removed.

(2) When using a spray-type product, although it has a strong odor neutralizing effect, it is cumbersome as it has to be operated by hand, especially in areas where unspecified people will be using it. Without it, there is little hope of using the spray.

The present invention was devised to solve the above-mentioned problems, and is a sensing device that detects the use of a place where there is a bad odor and automatically sprays air fresheners, deodorizers, etc. The object of the present invention is to provide a type spray actuation device.

Means for Solving the Problems In order to achieve the above object, the configuration of the sensing type spray actuating device of the present invention has two sensors, and according to the sensing order of the two sensors, a moving human body can be detected. A sensing means for sensing a direction of movement, and a driving means for opening a valve of a deodorant or air freshener spray device for a certain period of time when the sensing means senses a specific direction of movement, or detects a sound. and a sensing means for detecting a characteristic continuous sound indicating the use of the equipment among the sounds through a filter, and a driving means for opening a valve of a deodorant or air freshener spray device for a certain period of time based on the sensing signal. It is characterized by:

Function The present invention uses two sensors to detect human body temperature and light shielding in places where there is a bad odor.
By sensing the direction of movement of the person, it is possible to detect either the entry or exit of the person into the place, and to sense the use of the place by the person, or to detect the use of the place's facilities by the person. By sensing the characteristic continuous sound generated by the system, such as the temperature of the water supply and drainage water, it is possible to sense that the person is using the area, and the sensing signal can be used to trigger the valve of the spray device to respond to the person's use of the area. It will be open only once for a certain period of time to spray air fresheners and deodorizers.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing an embodiment of the first aspect of the present invention. This embodiment shows a case where a commercially available aerosol type spray can is used to sense a person's body temperature and automatically spray a fragrance or deodorizer. In this embodiment, a sensing circuit 1 has two infrared sensors and detects the passage of a person by body temperature.
and a drive circuit 3 which is equipped with drive means such as a solenoid and opens the valve of the spray device 2 for a certain period of time based on a sensing signal from the sensing circuit 1.

The sensing circuit 1 includes, for example, current collecting type infrared sensors 1 arranged at predetermined intervals in the direction of movement of a person.
0, 11, an amplifier 12 for the sensor output A of one sensor 10, and a first monostable multivibrator that is triggered by the leading edge of the amplified sensor output A and delivers a first monostable output with a constant time width. 1
3 (also referred to as a one-shot multivibrator or monostable multivibrator), and a second monostable multivibrator 14 that is triggered by the trailing edge of its first monostable output and delivers a second monostable output. The sensing circuit 1 also includes an amplifier 15 for the sensor output B of the other sensor 11.
and a third monostable multivibrator 16 which is triggered by the leading edge of the amplified sensor output B and sends out a third monostable output, and which maintains said second monostable output at one input terminal and the other. and an AND circuit 17 which maintains a third monostable output at the input terminal of the circuit. The output of this AND circuit 17 is a sensing signal that indicates the passage of a person. In the above, the time width of the monostable output of each monostable multivibrator 13, 14, 16 is adjusted by the resistance value and the capacitance value of the capacitor, for example, the time width of the first and third monostable outputs is made approximately equal, Preferably, the second monostable output is set smaller than that value.

The spray device is equipped with a knob 21 at the top of the can 20, and by pressing or tilting the knob 21 forward, a valve (not shown) in the can 20 opens, and the gas inside the can 20 is released by the internal gas pressure. Air fresheners and deodorizers are sprayed through small holes.

The drive circuit 3 includes a monostable multivibrator 30 that is triggered by the leading edge of the sensing signal of the AND circuit 17 and sends out a monostable output for a certain period of time (for example, about 3 seconds), and a collector that obtains a base current from the monostable output. ~Transistor 31 whose emitters are conductive
and a solenoid 32 connected between the Vcc power supply and the collector of the transistor 31. The emitter of the transistor 31 is connected to ground, and when conductive, the solenoid 32 is configured to actuate and push or force the knob 21 of the spray device 2 forward.

The operation of the above embodiment of the first invention will be described. FIG. 2 is a timing chart for explaining the operation. Infrared sensors 10 and 11 detect the body temperature of a person who approaches the person at a remote location. A person walks in front of these sensors 10 and 11 from sensors 10 to 11.
When crossing _toward A second monostable output (time width Tp ₂ ) is obtained at the trailing edge of the stable output.

On the other hand, the sensor output B of the sensor 11 causes the third
A monostable output is obtained, which is delayed in time (with a phase difference) from the first monostable output due to the spacing of the sensors. The time Tp ₁ is set so that the delay time is smaller than the time Tp ₁ .

When the third monostable output and the second monostable output are input to the AND circuit 17 in the above relationship, an AND output, that is, a sensing signal is obtained at the timing of the second monostable output, and the monostable multivibrator 30 is triggered to energize the solenoid 32 for a certain period of time, and the plunger presses the knob 21 of the spray device to spray.

In the above, spraying is performed only when a person passes through the sensors 10→11 in the order, and otherwise, the AND condition of the AND circuit 17 is not satisfied, so no sensing signal can be output, and no spraying is performed. This makes it possible to prevent malfunctions caused by infrared rays contained in sunlight and other light, and also to determine the direction in which a person is passing. Spraying can be done only once at the right time. Making the time widths of the first monostable output and the third monostable output substantially equal is convenient when the sensors 10 and 11 are used interchangeably.

FIG. 3 is a block diagram showing an embodiment of the second aspect of the present invention. This embodiment shows a case where the use of a place such as a flush toilet is detected by the sound of water being drained and the spray device is activated to spray the water.
This embodiment comprises a sensing circuit 4 equipped with a condenser microphone for sound collection, a spray device 2, and a drive circuit 3 for the spray device 2. Since the spray device 2 and the drive circuit 3 are substantially the same as those in the first embodiment of the invention described above, the same reference numerals are given and the explanation thereof will be omitted.

The sensing circuit 4 uses a condenser microphone (hereinafter abbreviated as "microphone") 40 to pass only sounds in a characteristic frequency band among the sounds collected by the microphone 40, such as drainage sounds and water supply sounds from washrooms and toilets. a bandpass filter 41 that removes other low-frequency and high-frequency sounds, an amplifier 42 that amplifies the characteristic sound, and an amplitude detection circuit 43 that extracts a positive amplitude envelope signal of the amplified characteristic sound. Be prepared.

The sensing circuit 4 also includes a first voltage comparator 44 that compares and determines whether the envelope signal exceeds a preset reference voltage _VH , and a first voltage comparator 44 that compares and determines whether the envelope signal exceeds a preset reference voltage _VL . A second voltage comparator 45 is provided to compare and determine whether or not the voltage is the same. The above reference voltage is
V _H > V _L , the first voltage comparator 44 detects the occurrence of an impact sound that occurs at the beginning, and the second voltage comparator 45 detects the occurrence of a continuous sound of water supply and drainage that continues until after that. do.

Furthermore, the sensing circuit 4 includes a first monostable multivibrator 46 that is triggered by the impact sound generation signal and sends out a first monostable output with a fixed time T _S width, and a trailing edge of the first monostable output. a second monostable multivibrator 47 that is triggered by and sends out a second monostable output with a relatively short time width;
An AND circuit 48 is provided in which the second monostable output is connected to one input and the above-mentioned sustained sound generation detection signal is sustained to the other input. The AND circuit 48 identifies the discharge water sound from the noise by sampling the sustained sound with a second monostable output (sampling pulse) after a certain period of time (sampling time) T _S from the detection of the occurrence of the impact sound. The output of this AND circuit 48 becomes a sensing signal indicating that a person is using the location.

With the above configuration, it is possible to obtain a function of detecting the sound of water being discharged and injecting an air freshener, etc.; Once the monostable multivibrator 30 operates and injects, the operation of the monostable multivibrator 46 is prohibited for a period (for example, 2 minutes, etc.) specified by the timer 49, and no injection continues during that period (2 minutes). It is preferable to do this to prevent unnecessary injection and consumption of the battery that supplies Vcc power.

The operation of the embodiment of the second invention having the above configuration will be described. FIG. 4 is a timing chart showing the operation of this embodiment. The water drainage sound is characterized by a relatively high frequency sound, with a large sound being emitted at the beginning, followed by a relatively low sound that continues. In this embodiment, the bandpass filter 41 captures the characteristic frequency band sound,
The first loud sound, that is, the impact sound, is detected by the first voltage comparator 44 when it exceeds the comparison voltage V _H , and the presence or absence of a sustained sound is detected at the comparison voltage V _L by the sampling pulse after the sampling time T _S has elapsed. is checked by the AND circuit 48, and the output of the monostable multivibrator 30 turns on the transistor 31 and energizes the solenoid 32 for a certain period of time. As described above, the solenoid 32 sprays the fragrance or the like by pressing the knob 21 of the spray device 2 or tilting it forward.

By checking with the above sampling pulse, for example, even if the circuit operates due to simple loud noise, the second monostable multivibrator 4
Since no sustained sound is detected at the time of sampling pulse 7, the drive circuit 3 is not activated and the spray device 2 is prevented from spraying.

Further, if there is a possibility that continuous loud noise may enter, such noise can be eliminated by providing the first monostable multivibrator 46 as a retriggerable circuit. In other words, even if the trigger is triggered by the first noise and is re-triggered by a second or subsequent noise within the sampling time T _S , the sampling time T _S can be secured from the time of the re-trigger.
This is because the gate will be closed by the AND circuit 48 unless the initial noise gradually disappears to the same level as the sound of the toilet or drainage water supply.

Note that the object can be similarly achieved in the first invention by replacing the two infrared sensors of the means for detecting the movement of a person with sensors that detect when a person blocks the light transmission/reception path. The monostable multivibrator used in each of the above embodiments may also include a timer that determines the time by counting clock pulses. In the second invention, the means for promoting the characteristics of the sound used varies depending on the object, and in some cases, a band filter alone may be sufficient. Furthermore, various driving means can be used, such as one using a motor and a cam mechanism. in this way,
The present invention can be applied and implemented in various ways according to its gist.

Effects of the Invention As is clear from the above description, the sensing type spray actuation device of the present invention provides the following effects.

(1) A highly effective deodorizing spray device is automatically sprayed only once each time a person uses a place with a bad odor, so it is hassle-free and ensures that the spray is applied at the right time without waste. You can increase the effect.

(2) It becomes possible to use deodorizer and air freshener spray equipment in places where bad odors are generated and used by an unspecified number of people without the need for a supervisor, and it is possible to increase the effectiveness of appropriate sprays.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the first invention, FIG. 2 is a timing chart of the embodiment of the first invention, and FIG. 3 is a block diagram showing an embodiment of the second invention. FIG. 4 is a timing chart of the second embodiment of the invention. 1, 4... Sensing circuit (sensing means), 2... Spray device, 3... Drive circuit (driving means), 10,
11... Infrared sensor, 13, 14, 16...
Monostable multivibrator, 17... AND circuit, 21... Valve, 30, 46, 47... Monostable multivibrator, 40... Microphone, 41... Band pass filter, 44, 45
... Voltage comparison product, 48 ... AND circuit, 49 ...
Double injection prohibition timer.

Claims (1)

[Claims] 1. A sensing means having two sensors and sensing the direction of movement of a moving person according to the sensing order of the two sensors, and that the sensing means senses a specific direction of movement. and a driving means for opening a valve of a deodorant or fragrance spray device for a predetermined period of time. 2. A sensing means that detects sound and uses a filter to detect a characteristic continuous sound that indicates the use of the equipment, and a drive that opens the valve of the deodorant or air freshener spray device for a certain period of time based on the sensing signal. What is claimed is: 1. A sensing spray actuating device comprising: a drive means;