CN212623769U

CN212623769U - Small-size automatic humidity controller

Info

Publication number: CN212623769U
Application number: CN202021703986.6U
Authority: CN
Inventors: 刘小娴
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-02-26
Anticipated expiration: 2030-08-14

Abstract

The utility model relates to a small-sized automatic humidity controller, which comprises a timing controller, a power supply and a start-and-stop control circuit arranged between the timing controller and the power supply, wherein the output end of the timing controller is connected with a voltage stabilizing circuit which is used for forming 12V direct current voltage for supplying; the device also comprises a multi-resonant circuit consisting of an integrated chip IC1, a potentiometer RP1, a potentiometer RP2, a resistor R2, a light-emitting diode VL2, a capacitor C1 and a capacitor C2, a direct-current power supply indicating circuit consisting of a resistor R1 and the light-emitting diode VL1, and a control execution circuit consisting of a relay KA, an alternating-current contactor KM and a diode VD; the on/off of a main contact of the alternating current contactor KM correspondingly controls the on/off of the single-phase alternating current motor; the utility model discloses a carry out automatic control to bean sprouts humidity environment, have with low costs, efficient characteristics, alarm circuit's design for alarm when the circuit breaks down.

Description

Small-size automatic humidity controller

Technical Field

The utility model belongs to the technical field of it is electric, concretely relates to small-size automatic humidity controller.

Background

In the production of bean sprouts, because the varieties of bean sprouts are various, the growth humidity of various bean sprouts is different, and the required working time of the gap of the humidity controller is different. In the existing control mode, most of manual operations are used for adjusting and controlling the humidity, so that the labor cost is high and the efficiency is low.

In order to solve the above problems, a small automatic humidity controller is proposed in the present application.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a small-size automatic humidity controller has automatic humidity control, with low costs, efficient characteristics, still has the function of line fault warning.

The utility model provides a solve above-mentioned technical problem, the technical scheme who adopts is:

a small-sized automatic humidity controller comprises a timing controller, a power supply and a start-up, protection and stop control circuit arranged between the timing controller and the power supply, wherein the output end of the timing controller is connected with a voltage stabilizing circuit which is used for forming 12V direct current voltage for supplying;

the device also comprises a multi-resonant circuit consisting of an integrated chip IC1, a potentiometer RP1, a potentiometer RP2, a resistor R2, a light-emitting diode VL2, a capacitor C1 and a capacitor C2, a direct-current power supply indicating circuit consisting of a resistor R1 and the light-emitting diode VL1, and a control execution circuit consisting of a relay KA, an alternating-current contactor KM and a diode VD;

the on/off of the main contact of the alternating current contactor KM correspondingly controls the on/off of a single-phase alternating current motor, the output end of the single-phase alternating current motor is connected with a humidifying device, one path of 12V direct current voltage formed by the voltage stabilizing circuit is supplied to an integrated chip IC1, and the other path of the 12V direct current voltage is supplied to a light emitting diode VL1 after passing through a resistor R1.

Preferably, the voltage stabilizing circuit is composed of a fuse FU3, a transformer T, a bridge rectifier UR, a filter capacitor C3 and a three-terminal voltage stabilizing chip IC 2.

Preferably, the alarm circuit also comprises a 9V direct-current power supply, switches SA2 and KM1 normally closed contacts, a horn and an indicator lamp HL2, wherein the 9V direct-current power supply, the switches SA2 and the KM1 are sequentially connected in series to form a loop.

Preferably, the integrated chip IC1 is model NE 555.

Preferably, the three-terminal voltage regulation chip IC2 adopts LM 7812.

The above technical scheme of the utility model has following profitable technological effect:

the utility model discloses a carry out automatic control to bean sprouts humidity environment, have with low costs, efficient characteristics, alarm circuit's design for alarm when the circuit breaks down.

Drawings

Fig. 1 is an electrical schematic diagram of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1, the present invention provides a small automatic humidity controller, which includes a timing controller, a power supply, and a start-stop control circuit disposed between the timing controller and the power supply, wherein the output end of the timing controller is connected to a voltage stabilizing circuit, and the voltage stabilizing circuit is used to form a 12V dc voltage for supplying;

In this embodiment, the voltage regulator circuit is composed of a fuse FU3, a transformer T, a bridge rectifier UR, a filter capacitor C3, and a three-terminal regulator chip IC 2.

In some embodiments, the miniature automatic humidity controller further comprises an alarm circuit, wherein the alarm circuit comprises a 9V direct current power supply, a switch SA2, a KM1 normally closed contact, a horn and an indicator lamp HL2, wherein the 9V direct current power supply, the switch SA2, the KM1 normally closed contact and the horn are sequentially connected in series to form a loop, and the indicator lamp HL2 is connected to the horn in parallel.

In this embodiment, the integrated chip IC1 is of a type NE555, and the three-terminal regulator chip IC2 is of an LM7812 type.

In a specific embodiment, the controller can control the humidity motor to perform a gap operation, and the gap operation time can be manually adjusted according to the variety of the bean sprouts to be produced. The gap working time of the humidity controller for controlling the growth of the bean sprouts is respectively as follows:

the bean sprout humidity controller of the A type works for 15 minutes and stops for 10 minutes;

the bean sprout humidity controller of the type B works for 20 minutes and stops for 5 minutes;

c, stopping the bean sprout humidity controller for 20 minutes after 10 minutes;

and D, the bean sprout humidity controller works for 25 minutes and stops working for 15 minutes.

In this embodiment, the connection manner of the circuit is specifically shown in fig. 1.

When a system starting button SB2 is pressed, an alternating current contactor KM1 is electrified and self-locked, a KM1 normally-open auxiliary contact is closed, and a system working indicator lamp HL1 starts to work; the KM1 main contact is closed to supply power to the timing controller, wherein the timing controller is purchased as a finished product in the market, has the following functions of having output voltage all day long and also having output voltage within a specified time, generating 12V direct current voltage after the output end of the timing controller is stabilized by a voltage stabilizing circuit, one path of the voltage is supplied to a chip IC1, the IC1 is NE555, and the other path of the voltage is limited by a resistor R1 and then supplies power to a direct current power supply indicating light emitting diode VL 1. Because the main contact of the contactor is used as a power supply for controlling the timing controller, the voltage-loss protection and the undervoltage protection are provided for the whole controller.

It should be noted that, the voltage stabilizing circuit is composed of a transformer T and a bridge rectifier UR in sequence from one end of a fuse FU3, one end of the bridge rectifier UR is connected to one pin of a three-terminal voltage stabilizing chip IC2, and a filter capacitor C3 is connected in parallel with the bridge rectifier UR. As shown in particular in figure 1.

It should be further noted that the two-end lines of the single-phase alternating-current motor are controlled by using the KM normally open contact, and the humidity control of the product is performed by a humidifying device, for example, a sprayer adopted by the humidifying device, and the operation of the sprayer is controlled by the operation of the single-phase alternating-current motor.

In the multivibrator circuit, the light emitting diode VL2 and the resistor RP2 are connected in series to pin No. 3 of the IC1, the capacitor C2 is connected in series to pin No. 5 of the IC1, and the capacitor C2 and the resistor R2 are connected in common to the bridge rectifier UR, which is specifically connected as shown in fig. 1.

It should be noted that, the circuit is characterized in that the No. 2 and No. 6 pins of the NE555, and when the voltage is high, the No. 3 pin of the NE555 outputs high potential; the No. 2 and No. 6 pins of the NE555 are simultaneously low-voltage, and the No. 3 pin of the NE555 outputs high voltage; when the No. 2 and No. 6 pins of the NE555 are different in potential voltage, the No. 3 pin of the NE555 keeps the original potential. The working process of the humidifier is that when a 12V direct-current power supply is generated, because the voltages at two ends of the capacitor C1 can not be suddenly changed, pins 2 and 6 of the integrated chip IC1 are low levels which are lower than 1/3VCC, then the pins 3 output low levels, the relay KA and the alternating-current contactor KM are not attracted, the single-phase direct-current motor does not work, and the humidifier does not work. The direct current 12V voltage charges the capacitor C1 through the normally closed contact of the relay KA and the resistor PR2, the No. 2 pin and the No. 6 pin of the integrated chip IC1 are enabled to gradually rise, when the No. 2 pin of the integrated chip IC1 rises to 2/3VCC, the integrated chip IC1 circuit is triggered to overturn, then, the 3 pins output high level, the relay KA is attracted, the normally closed contact KA is disconnected, the other normally open contact is connected, the alternating current contactor KM is attracted, the single-phase direct current motor starts to work, and the humidifying device works. Meanwhile, VL2 lights up, and the humidifying device is instructed to be powered on to start working. The other group of normally open contacts of KA is connected with a capacitor C1 discharging loop, the capacitor C1 starts to discharge a resistor RP1, pins 2 and 6 of an integrated chip IC1 gradually descend, when the voltages of the pins 2 and 6 of the integrated chip IC1 are reduced to 1/3VCC, an integrated chip IC1 circuit is triggered to turn back to the initial state, the pin 3 outputs low level, the relay KA is released, the normally open contacts are disconnected, the normally closed contacts are connected, an alternating current contactor KM is released, a load circuit is powered off, a light emitting diode VL2 is extinguished, the capacitor C1 starts to charge again, and the steps are repeated in this way, so that the control of the humidity-controlled single-phase alternating current motor is realized.

Further, adjusting the resistance of the resistor RP1 can change the time that the capacitor C1 discharges, thereby changing the time that the humidifier is powered on, and adjusting the resistance of the resistor RP2 can change the time that the capacitor C1 charges, thereby changing the time that the humidifier is powered off and stopped. The production enterprises have four products to produce, the electricity obtaining time is 25min at most, and the electricity cutting time is 30min at most. Now, as long as the controller is designed to enable the power-on time to be adjustable within 30min and the power-off time to be adjustable within 40min, the requirements for producing the four products can be met. The following formula is used to calculate, as long as the two adjustable resistors are larger than the calculated value.

The selected resistance is only required to be larger than the calculated value, and through actual inquiry, two kinds of nominal resistance values exist in the market, one is 5.6M omega, and the other is 8.2M omega. The resistance value of RP1 is 5.6M omega, the resistance value of RP2 is 8.2M omega, and four different positions are marked on the two small solid potentiometers to correspond to the time positions required by four production processes, so that the gap working time of the humidity controller can be met.

In the control execution circuit, the relay KA, the ac contactor KM and the diode VD are connected in a specific manner as shown in fig. 1, a timing control part generates a gap control signal, and finally a coil of the ac contactor KM is controlled to operate alternately in a specified time period, and the on and off time depends on two potentiometers. And then the main contact of the alternating current contactor KM is closed, so that the single-phase alternating current motor starts to work to drive the spraying device to humidify the bean sprouts producing different types.

In order to ensure higher safety, a plurality of indicator lamps and alarm circuits are designed, a 220V alternating current power supply working indicator lamp HL1, a 12V direct current power supply working indicator lamp VL1, a humidity controller working indicator lamp VL2 and a fault state working indicator lamp HL2 are adopted for fault state alarm, sound and light alarm is adopted for fault state alarm, the alarm working indicator lamps adopt independent direct current 9V power supplies for power supply, when the circuit has an undervoltage or voltage loss fault or the 220V power supply voltage fails due to other reasons, a normally closed contact of an alternating current contactor KM1 is restored to a closed state, the fault state alarm indicator lamp HL2 starts to emit light at the moment, a loudspeaker is connected on the alarm working indicator lamp in parallel, and sound alarm starts to be given at the same time. The fault state alarm indicator lamp starts to work under the condition that a line has a fault, all alternating current power supplies and voltage-stabilizing direct current power supplies do not exist at the moment, so a 9V stacked battery is additionally arranged to supply power to the fault state alarm indicator lamp, and when an operator finds that the fault comes, a standby power supply is adopted to supply power to the whole automatic humidification system. For fire-fighting acousto-optic alarm, a manual stop knob SA2 is connected in series in the alarm circuit as a control switch.

The bill of materials and component types used to complete the circuit are as follows.

The material has low cost.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A small-sized automatic humidity controller is characterized by comprising a timing controller, a power supply and a start-up, maintenance and stop control circuit arranged between the timing controller and the power supply, wherein the output end of the timing controller is connected with a voltage stabilizing circuit which is used for forming 12V direct current voltage for supplying;

2. The compact automatic humidity controller of claim 1, wherein the voltage regulator circuit is composed of a fuse FU3, a transformer T, a bridge rectifier UR, a filter capacitor C3, and a three-terminal regulator chip IC 2.

3. The compact automatic humidity controller of claim 1, further comprising an alarm circuit, wherein the alarm circuit comprises a 9V DC power supply, a switch SA2, a KM1 normally closed contact, a horn, and an indicator lamp HL2 connected in parallel to the horn.

4. The compact automatic humidity controller of claim 1, wherein said integrated chip IC1 is model NE 555.

5. The small automatic humidity controller as claimed in claim 2, wherein the three-terminal regulator IC2 is LM 7812.