KR900010173Y1 - Pinch-roller driving apparatus control circuit for ultra-sorcic humidefier - Google Patents

Abstract

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Description

Ultrasonic Humidifier Control Circuit

1 is a block diagram of the present invention.

2 is a circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1: microcomputer 2: power unit

3: setting display part 4: key matrix

5: ultrasonic humidification circuit 6: fan motor drive unit

7: sliding detection unit 8: current humidity display unit

9: digital analog corn butter 10: alarm unit

11: low water detection unit FS: float switch

RE: regulators Q ₁ , Q ₂ , Q ₃ . Transistor

LD ₁ -LD ₄ : Light emitting diode M: Motor

R ₁ , R ₂ , R ₃ . : Resistance TH ₁ : Humidity Sensor

TH ₂ : Thermistor

The present invention, in the ultrasonic humidifier, by combining a sensor and a microcomputer to detect the relative humidity, if the target humidity is selected to display the current humidity in the room while the continuous or intermittent humidification is performed for a set time until the target humidity It relates to a control circuit of the humidifier.

The conventional ultrasonic humidifier maintains only the "on-off" function by driving a manually operated power switch, so that if the "on" state persists, excessive humidity may be maintained.

Therefore, by applying the automatic humidity control function, it becomes an automatic humidity humidifier in which the operation is controlled by comparing the set humidity with the current humidity. However, the automatic humidity humidifier also maintains only the appropriate humidity, so that unnecessary humidification is performed even during sleep time and morning time when humidification is unnecessary. It had a bad effect on the human body.

In consideration of this, the present invention sets the target humidity and then compares it with the current humidity, and automatically humidifies the humidity to maintain a comfortable state and at the same time not to humidify the sleeping time or the morning time. It is to provide the control circuit of the ultrasonic humidifier with accuracy and stability by allowing the function to be controlled by the microcomputer. The power supply unit and the key matrix are connected to the microcomputer to control the ultrasonic humidifier circuit and the fan motor driving unit. After outputting the corresponding data from the microcomputer and converting it into analog voltage, it is configured to control the operation of the ultrasonic humidification circuit and the fan motor driving unit by comparing with the voltage detected by the humidity sensor that checks the current humidity. Add a feature when the scheduled time comes The humidification function is automatically shut off.

This will be described in detail with reference to the accompanying drawings.

1 is a block diagram of the present invention, a power supply unit 2 for supplying power to the microcomputer 1, a key matrix 4 for inputting respective selection functions, and a setting display unit 3 for displaying setting humidity and setting time. And an ultrasonic humidifying circuit 5 for humidifying, a fan motor driving unit 6 for driving a fan motor to send a humidified spray amount, a low water detection unit 11 for detecting no water, and each of the driving units. In the ultrasonic humidifier composed of the microcomputer (1) which accepts the input of the input and controls the driving thereof, the digital analog converter (9) converts the other output corresponding to the target humidity of the microcomputer (1) with the timer reservation function into analog voltage (9). ), a humidity sensor 7 to compare the output to the output detects the current humidity of the digital analog converter (9) to the comparator (op ₁₎ that is applied to the microcomputer (1) to display the current humidity Consists of a material humidity display unit (8).

2 is a circuit diagram of the present invention, and the power supply unit 2 is configured such that AC power AC induced by the transformer T is applied to the regulator RE through the bridge diode BD, and is constant voltage by the regulator RE. After the VDD is supplied and the Darlingon-connected transistors Q ₁ and Q ₂ and the zener diode ZD are configured to be connected to the terminal INIT of the microcomputer 1, the transistor Q _{3 is} provided. As a result, a square wave of 60 Hz is supplied.

The key matrix 4 is configured to configure a plurality of directional diodes (D ₁ ) (D ₂ ) and resistors (R ₁₇ ) (R ₁₈ ) as usual, to select a set humidity, a humidification time, and other functions. The display unit 3 is configured to display the set time with the light emitting diodes LD ₁ -LD ₃ and the transistor Q ₈ , and can display the set humidity with the light emitting diodes LD ₄ -LD ₇ and the transistor Q ₉ . The current humidity display unit 8 is configured to display the current humidity by the light emitting diodes LD ₉ -LD ₁₃ and the resistors R ₃₀ -R ₃₄ and the 3-state buffer B.

The humidity sensing unit 7 is configured differently from the normal sensor unit, and the conventional sensor circuit uses AC power, but in the present invention, the sensor circuit is configured to receive a sphere and power from the microcomputer 1 port, and the humidity sensor TH ₁ ) and the resistance range of the humidity sensor (TH ₁ ), which is changed according to the amount of humidification by the variable resistor (VR) and the resistor (R ₂₆ ), is converted into voltage displacement, and the amplifier (OP ₂ ) and the resistor (R ₂₇ ) ( The output amplified by R ₂₉ ) is configured to be temperature compensated through the temperature compensation thermistor (TH ₂ ) and the resistor (R ₂₈ ) and then supplied to the inverting terminal of the comparator (OP ₁ ) and at the same time the resistor (R ₃₅₎ -R ₄₀₎ configured as a digital analog converter 9, voltage comparator group (OP _1), the ratio is supplied to the inverting terminal (+) a digital-to-analog conversion at a high value by the comparator (OP _1), when greater than the temperature compensation voltage value of a diode (D ₄₎ to output the level signal It is configured to be applied to the microcomputer (1) through.

The low water level detecting unit 11 is configured to apply the low water level state through the diode D ₃ to the microcomputer 1 when the transistor Q ₅ is turned on when the float switch FS is opened (low water level state). When the light emitting diode LD ₁₄ is turned on and the float switch FS is shorted (if there is water), the transistor Q ₅ is kept off to generate a low potential signal to the microcomputer 1 via the diode D ₃ . It is configured to turn off the light emitting diode (D ₁₄ ).

In addition, a known ultrasonic humidification circuit 5 is connected to the microcomputer 1 connected to the alarm unit 10 including the transistor 66 and the speaker SP through the transistor Q ₄ , and AC power is applied. The fan motor driver 6 is configured in the motor M to be connected to the transistor Q ₇ through the triac TD.

The present invention configured as described above compares the set humidity inputted through the key matrix 4 with the present humidity detected by the humidity sensing unit 7, and the ultrasonic humidification circuit 5 and the fan until the present humidity reaches the set humidity. When driving the motor drive unit 6 to perform the humidification, and when the drive time of the humidifier is set to perform the humidification function only for the set time by looking at the effect of the present invention in detail as follows.

First, the power supply unit 2 that supplies power to the microcomputer 1 is supplied with power to the secondary side of the transformer T is refined from the bridge diode BD and applied to the microcomputer 1 with a constant voltage from the regulator RE. The initial input voltage is acknowledged by resistors Q ₁ (Q ₂ ), zener diode (ZD), and Darlington-connected transistor (Q ₁ ) (Q ₂ ), and through the transistor (Q ₃ ) Will supply a 60HZ square wave.

That is, the power supply unit 2 supplies the power supply VDD required by each driving circuit and the microcomputer 1 and the square wave of 60HZ, which is the same as the power supply circuit that is typically configured in the ultrasonic humidifier.

When the power is applied to the microcomputer 1 in the power supply unit 2 as described above, the desired humidity is set using each key of the key matrix 4 while the driving time of the ultrasonic humidifier is input. Different keys are used to control each function of the ultrasonic humidifier.

When the set humidity and the set time are input from the key matrix 4, the microcomputer 1 recognizes the set humidity and the set time of the light emitting diodes LD _1- LD ₇ and the transistors Q ₈ and Q _{9 of} the setting display unit 3. By controlling the driving, the humidity is set and the amount of the food is set to the outside.

That is, the driving time of the transistors Q ₈ and the light emitting diodes LD _1- LD ₇ is controlled according to the set time so that the driving time of the ultrasonic humidifier is displayed to the outside according to the driving of the light emitting diodes LD _1- LD ₃ . According to the set humidity, the driving of the transistors Q ₉ and the light emitting diodes LD ₄ to LD ₇ is controlled to indicate to outside the degree of humidity.

After the power is applied through the power supply unit 2 as described above, inputting the set humidity and the setting time using the keys of the key matrix 4 causes the microcomputer 1 to transistor Q ₈ (Q ₉ ) of the setting display unit 3. ) And the light emitting diodes (LD ₁ -LD ₇ ) to control the display of the set time and set humidity to the outside.

When the set time and the set humidity are selected, the microcomputer 1 'turns on' the transistor Q ₄ to drive the known ultrasonic humidification circuit 5, while the transistor Q ₇ 'turns on' and the triac ( By turning on the TD), the pin motor M is driven to perform normal ultrasonic humidification.

On the other hand, when the set time and the set humidity are selected and the ultrasonic humidification circuit 5 and the fan motor drive unit 6 are driven to perform ultrasonic humidification, the microcomputer 1 gradually increases as the ultrasonic humidification proceeds with the digital analog converter 9. The output data is converted into analog voltage by the resistors R ₃₅ and R _40. The output voltage of the digital analog converter 9 is applied to the non-inverting terminal (+) of the comparator OP ₁ so that the inverting terminal ( It is compared with the output voltage of the humidity sensing unit 7 applied to-).

That is, as the ultrasonic humidification progresses, the data gradually increasing in the microcomputer 1 is output, converted into an analog voltage in the digital analog converter 9, and applied to the non-inverting terminal (+) of the comparator OP ₁ . The current humidity condition is displayed by controlling the driving of the light emitting diodes LD ₉ -LD ₁₃ through the data 3 state buffer B output from (1).

During the ultrasonic humidification, the humidity sensor (TH ₁ ) is used to detect the current humidity as a voltage, and since the detected voltage is low in voltage, it is amplified by the amplifier (OP ₂ ) and affected by the temperature. was corrected to _2), an inverting terminal (a comparator (OP _1), - then applied to).

Therefore, the comparator OP ₁ compares the current humidity sensed by the humidity sensing unit 7 with the output voltage passing through the digital analog converter 9 and applies it to the microcomputer 1 through the diode D ₄ . When the output of the humidity sensing unit 7 that detects the current humidity is lower than the output of the digital analog converter 9, that is, when the current humidity reaches the set humidity, the high level is transferred to the microcomputer 1 through the diode D ₄ . Is authorized.

In the microcomputer 1, when the high level is applied through the diode D ₄ , the operation of the ultrasonic humidification circuit 5 and the fan motor driving unit 6 is stopped so that ultrasonic humidification is no longer performed. When the current humidity is lowered and lower than the set humidity over time, the output of the humidity sensing unit 7 applied to the inverting terminal (-) of the comparator OP ₁ is applied to the non-inverting terminal (+). Since the comparator OP ₁ applies a low level to the output of the microcomputer 1, the microcomputer 1 operates the ultrasonic humidification circuit 5 and the fan motor drive unit 6 again. Let this be.

Therefore, by repeating the above process it is possible to adjust the current humidity to match the set humidity.

At this time, the microcomputer 1 performs the automatic humidity control function as described above, and checks the set time to stop the operation of the ultrasonic humidification circuit 5 and the fan motor driving unit 6 unconditionally when the set time is no longer ultrasonic humidification. Do not

Therefore, since the ultrasonic humidifier operates only at the set time, driving of the humidifier may be stopped during sleep time or morning time where humidification is unnecessary.

And at the same time and so the LED Sikkim indicate that (LD ₁₄₎ to "on" to go state, the float switch (FS) The water falls from the ultrasonic humidifier is "off" transistor (Q ₅₎ is to be "turned on" diode (D ₃ The high level is applied to the microcomputer (1) through the motor. At this time, the operation of the ultrasonic humidifier circuit (5) and the fan motor driving unit (6) is stopped, and when the water is full, the float switch (FS) is turned on. As a result, since the transistor Q ₅ is 'turned off', the light emitting diode D ₁₄ is also 'off' and the high level is not applied to the microcomputer 1 through the diode D ₃ .

In addition, in the microcomputer 1, when an abnormality occurs during the above operation, the transistor Q6 of the alarm unit 10 is intermittently driven so that an alarm sound is output to the speaker SP. You will be notified of an abnormal condition.

As described above, the present invention compares the current humidity and the set humidity when the set humidity and the set time are set in the ultrasonic humidifier, and operates the ultrasonic humidifier until the current humidity reaches the set humidity to maintain a constant humidity. The ultrasonic humidifier is operated only during the time period, so that the current humidity at the set humidity can be maintained accurately, while the humidification function such as sleep time or morning time is not performed by the set time. It has the effect of precise humidity control and eliminating unnecessary humidification.

Claims (1)

The microcomputer 1, which is supplied with power from the power supply unit 2 and recognizes the key input of the key matrix 4, controls the ultrasonic humidification circuit 5 and the fan motor drive unit 6, and simultaneously displays the set humidity and the set time. In the ultrasonic humidifier for controlling the driving of the setting display section 3, the digital analog converter 9 for converting the output data of the microcomputer 1 corresponding to the setting humidity set by the key matrix 4 into an analog voltage. And a humidity sensing unit 7 for sensing the current humidity with the sensor TH ₁ , amplifying the amplifier OP ₂ , and outputting a voltage compensated with the temperature of the thermistor TH ₂ , and the humidity sensing unit 7. The comparator OP ₁ for comparing the output of the output voltage and the output voltage of the digital analog converter 9 and the output level of the comparator OP ₁ are recognized to drive the ultrasonic humidification circuit 5 and the fan motor driver 6. Micom 1 to control within a set time, and the mi Was applied to the 1-state light-emitting diodes through the buffer (B) 3- The output data that is applied from the digital analog converter 9, in (LD ₉ -LD ₁₃₎ when the current humidity display control circuit of the ultrasonic humidifier.