CN211311936U

CN211311936U - Control circuit of intelligent electric clothes hanger and electric clothes hanger

Info

Publication number: CN211311936U
Application number: CN202020013966.XU
Authority: CN
Inventors: 杨选华; 曹永辉
Original assignee: Dongguan City Man Jia Electronic Technology Ltd
Current assignee: Dongguan City Man Jia Electronic Technology Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-08-21
Anticipated expiration: 2030-01-02

Abstract

The utility model discloses a control circuit of an intelligent electric clothes hanger and an electric clothes hanger, wherein the control circuit comprises a power module and a microcontroller, and the microcontroller is coupled and electrically connected with an electric motor driving module, a stroke sensing detection module, a humidity detection module and an indication module which are controlled by the microcontroller; the power supply module is used for converting alternating current of a mains grid into a direct current power supply for operating the electric clothes hanger; the microcontroller can control the stroke sensing detection module to be matched with a plurality of magnets arranged on a lifting shaft of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the electric motor driving module to drive the lifting motor to work according to the position of the clothes drying rod detected by the stroke sensing detection module; the microcontroller can also control the humidity detection module to detect the environment humidity and the clothes humidity and control the drying device of the clothes hanger to be opened or closed according to the environment humidity and the clothes humidity detected by the humidity detection module; the microcontroller also controls the indication module to indicate the working state of the electric clothes hanger.

Description

Control circuit of intelligent electric clothes hanger and electric clothes hanger

Technical Field

The utility model relates to an intelligence furniture technical field especially relates to electronic clothes hanger's of drying in air control circuit of intelligence and electronic clothes hanger that dries in air.

Background

Along with social development and technical innovation, people daily life is more and more intelligent. More and more intelligent furniture is present in people's daily life. The clothes hanger is a necessary product for daily life of people, and the electric clothes hanger is also an intelligent furniture popular and frequently selected by people. However, the electric clothes hanger on the market at present is not provided with a drying function, and the electric clothes hanger with the drying function needs to be manually opened for drying, and cannot be automatically opened according to the environmental humidity, so that the electric clothes hanger is poor in use experience and use effect. .

In view of the above problems in the related art, no effective solution exists at present.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the defect that exists among the prior art of design, provide an automatic open stoving and energy-concerving and environment-protective intelligent electronic clothes hanger's of drying control circuit and electronic clothes hanger that dries in air.

According to the first aspect of the utility model, the technical proposal adopted by the utility model is that the control circuit of the intelligent electric clothes hanger comprises a power module and a microcontroller, wherein the microcontroller is coupled with and electrically connected with an electric motor driving module, a stroke sensing detection module, a humidity detection module and an indication module which are controlled by the microcontroller; the power supply module is used for converting alternating current of a mains grid into a direct current power supply for the electric clothes hanger to work; the microcontroller can control the stroke sensing detection module to be matched with a plurality of magnets arranged on a lifting shaft of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the electric motor driving module to drive the lifting motor to work according to the position of the clothes drying rod detected by the stroke sensing detection module; the microcontroller can also control the humidity detection module to detect the environment humidity and the clothes humidity and control the drying device of the clothes hanger to be opened or closed according to the environment humidity and the clothes humidity detected by the humidity detection module; the microcontroller also controls the indicating module to indicate the working state of the electric clothes hanger.

As a further elaboration of the above technical solution:

in the above technical solution, the power supply module includes an AC/DC power supply module electrically coupled to a utility grid and a voltage stabilizing module electrically coupled to the AC/DC power supply module; the AC/DC power supply module comprises a WA3-220S05A2A power supply module PW1 used for converting alternating current of a commercial power grid into +24V direct current voltage; the voltage stabilizing module comprises an HT7333 voltage stabilizing chip U2, and the HT7333 voltage stabilizing chip U2 is used for stabilizing +24V direct-current voltage into + 3.3V.

In the technical scheme, the electric motor driving module comprises a motor forward rotation driving branch and a motor reverse rotation driving branch which are electrically coupled with the lifting motor, the motor forward rotation driving branch and the motor reverse rotation driving branch both comprise relays, one end of a control coil of each relay is connected with a current-limiting resistor in series and is electrically connected with +24V, the other end of the control coil of each relay is electrically connected with a collector of a switch triode, a base of the switch triode is connected with a first current-limiting resistor in series and is electrically connected with an output on-off control I/O port of a micro-controller, and an emitter of the switch triode is opposite; the micro controller outputs matched signals along the output on-off control I/O port and enables the switch triode to be switched on or off, the switch triode is switched on to enable the contact of the relay to be attracted and enable the positive pole or the negative pole of the lifting motor to be communicated with +24V, and the lifting motor rotates forwards or reversely and is matched with the clothes airing rod to lift.

In the above technical solution, the switching triode is an MMB3904 transistor.

In the above technical solution, the stroke sensing detection module includes a first hall switch H1, a second hall switch H2, a high-position limit switch SW1 and a low-position limit switch SW2, the first hall switch H1 and the second hall switch H2 are connected in parallel, power terminals of the first hall switch H1 and the second hall switch H2 are both electrically connected with +3.3V, output terminals of the first hall switch H1 and the second hall switch H2 are respectively electrically connected with a detection I/O port matched with the microcontroller, and the high-position limit switch SW1 and the low-position limit switch SW2 are connected in series and electrically connected with a limit detection port of the microcontroller; the microcontroller controls the first Hall switch H1 and the second Hall switch H2 to be matched with a plurality of magnets arranged on a lifting shaft of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the lifting of the clothes drying rod in a matching way according to the limit detection of the high-position limit switch SW1 and the low-position limit switch SW 2.

In the technical scheme, the humidity detection module comprises an environment humidity detection circuit electrically coupled with the microcontroller and a clothes humidity detection circuit electrically coupled with the clothes airing rod and the microcontroller, wherein the environment humidity detection circuit comprises a humidity sensor HT1 directly connected with the microcontroller, and the humidity sensor HT1 is used for detecting the environment humidity in cooperation with the control of the microcontroller; the clothes humidity detection circuit comprises a sampling circuit formed by connecting a divider resistor R8 and a divider resistor R9 in series, wherein two ends of the sampling circuit are respectively connected with +3.3V and the ground, the electric connection point of the divider resistor R8 and the divider resistor R9 is also electrically connected with a detection I/O port of the micro-controller in a coupling manner, and two poles of the divider resistor R9 are also respectively and electrically connected with a plurality of first electrode plates S1 and a plurality of second electrode plates S2 which are alternately and crossly arranged on the clothes drying rod; the micro controller detects the humidity of the clothes by detecting the voltage of the electric connection point of the voltage dividing resistor R8 and the voltage dividing resistor R9.

In the above technical solution, the indicating module includes a first indicating unit for sound indication and a second indicating unit for light indication; the first indicating unit comprises a switching triode Q10, the switching triode Q10 is electrically connected with the negative electrode of the buzzer, the base electrode of the switching triode Q10 is connected in series with a current limiting resistor R57 and is electrically connected with the sound indicating control port of the micro controller, and the emitter electrode of the switching triode Q10 is connected to the ground; the micro controller outputs matched signals along a sound indication control port to enable the switching triode Q10 to be switched on or off, and the buzzer sounds for indication in a matched mode; the second indicating unit comprises two parallel light-emitting LED lamps, the anodes of the two light-emitting LED lamps are electrically connected with 3.3V, the cathodes of the two light-emitting LED lamps are connected in series with matched current-limiting resistors and are electrically connected with two light-emitting indicating control ports of the microcontroller, and the microcontroller outputs low level along the light-emitting indicating control ports to enable the two light-emitting LED lamps to emit light for indicating.

In the above technical solution, the switching transistor Q10 is an MMB3904 transistor.

In the above technical solution, the microcontroller is an EM357 ARM controller.

The utility model discloses a control circuit passes through humidity detection module real-time detection environment humidity and clothes humidity to when environment humidity is greater than and sets for the threshold value and detects the wet clothes on the clothes-horse, open the stoving function automatically and dry fast, can close through humidity detection module matching control drying apparatus after the clothes dries, realize that electronic clothes hanger can the fast drying clothes, and the automatic shutdown, practice thrift the electric energy.

According to a second aspect of the utility model, the utility model adopts the following technical scheme that the electric clothes hanger comprises a control panel, and the control panel is provided with the control circuit of the intelligent electric clothes hanger according to the first aspect.

Drawings

FIG. 1 is a circuit schematic diagram of a control circuit of the intelligent electric clothes hanger of the utility model;

fig. 2 is the distribution schematic diagram of the electrode plate on the clothes-horse for detecting the humidity of clothes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1 is a circuit schematic diagram of a control circuit of an intelligent electric clothes hanger in an embodiment of the present invention. The control circuit uses an AC/DC power supply module 501 with wide input voltage of 85V-265V, so that the device can still normally work when the power supply voltage has large fluctuation, and outputs direct-current 24V voltage for a lifting motor and a voltage stabilizing module 502; the voltage stabilizing module 502 converts the direct current 24V into direct current 3.3V for the microcontroller U3, the stroke sensing detection module 200, the humidity detection module 300 and the indication module 400 to use; the indication module 400 displays different working states through the sound of the LED and the buzzer; the electric motor driving module 100 controls the forward and reverse rotation of the lifting motor to control the lifting of the clothes-horse; the microcontroller U3 controls the lifting position of the clothes-horse according to the position information fed back by the travel sensing detection module 200; the microcontroller U3 decides whether to open the drying function according to the environment and the humidity condition of clothes that the humidity detection module 300 feedbacks, and when the environment humidity > 90%, the drying function will be opened automatically when there is wet clothes on the clothes-horse again.

Referring to fig. 1, the control circuit of the intelligent electric clothes hanger of the present embodiment includes a power module 500 and a microcontroller U3, in the present embodiment, the microcontroller U3 is an EM357 ARM controller, and the microcontroller U3 is electrically coupled to an electric motor driving module 100, a stroke sensing detection module 200, a humidity detection module 300 and an indication module 400 controlled by the microcontroller U3; the power module 500 is configured to convert ac power of a utility grid into dc power (+24V and +3.3V) for the electric laundry rack to work; the microcontroller U3 can control the stroke sensing detection module 200 to cooperate with a plurality of magnets (not shown in the drawings, and can be a lead screw in practice) arranged on a lifting shaft (a shaft in transmission connection with an output shaft of a lifting motor) of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and the lifting shaft can be a lead screw, and controls the electric motor driving module 100 to drive the lifting motor to work according to the position of the clothes drying rod detected by the stroke sensing detection module 200; the microcontroller U3 can also control the humidity detection module 300 to detect the ambient humidity and the clothes humidity, and control the drying device of the clothes hanger to be turned on or turned off according to the ambient humidity and the clothes humidity detected by the humidity detection module 300; the microcontroller U3 also controls the indication module 400 to indicate the working state of the electric clothes hanger.

In this embodiment, the power module 500 includes an AC/DC power module 501 electrically coupled to a utility grid and a voltage stabilizing module 502 electrically coupled to the AC/DC power module 501; the AC/DC power module 501 comprises a WA3-220S05A2A power module PW1, configured to convert AC power of a utility grid into +24V DC voltage; the voltage stabilizing module 502 comprises an HT7333 voltage stabilizing chip U2, and the HT7333 voltage stabilizing chip U2 is configured to stabilize a +24V dc voltage to + 3.3V.

Specifically, the AC/DC power module 501 converts AC mains power into 24V DC power to supply power to the voltage regulator module 502 and other related circuits and modules; the AC/DC power module 501 adopts a wide-input switching power module with constant-voltage, overcurrent and short-circuit protection functions, wherein the power module PW1 adopts WA3-220S05A2A, one end of a fuse FR1 is connected with a live wire terminal L _ IN, the other end is connected with the 2 nd pin of a PW1 module PW 3-220S05A2A, the neutral wire terminal N _ IN is connected with the 1 st pin of a PW1 of a PW 3-220S05A2A power module, a voltage dependent resistor VAR1 and an X capacitor C3 are connected between the 1 st pin and the 2 nd pin of a PW1 module PW 3-220S05A2A power module PW1, the positive pole of a filter electrolytic capacitor EC4 is connected with the 4 th pin of a PW1 of a PW 3-220S05A2A power module PW1, and the negative pole of the filter electrolytic capacitor EC 1 is connected between the 3 rd pin of the PW1 module PW 1-220S 05A 21 and the PW 1; the voltage stabilizing module 502 converts the +24V DC of the AC/DC circuit module 501 into 3.3V DC for the microcontroller U3, the stroke sensing module 200, the humidity sensing module 300 and the indication module 400, the 1 st pin of the HT7333 voltage stabilizing chip U2 is connected to GND, the 2 nd pin is an input pin and is connected to the WA3-220S05A2A power module PW 14 th pin, and the capacitors C2 and C5 are connected between the 3 rd pin and GND of the HT7333 voltage stabilizing chip U2.

In this embodiment, the electric motor driving module 100 includes a motor forward driving branch 101 and a motor reverse driving branch 102 coupled to and electrically connected to the lift motor, the motor forward rotation driving branch 101 and the motor reverse rotation driving branch 102 both comprise a relay (K1/K2), one end of a control coil of the relay (K1/K2) is connected with a current limiting resistor (R1/R4) in series and is electrically connected with +24V, the other end of the control coil is electrically connected with a collector of a switching triode (Q1/Q2), in the embodiment, the switching transistor (Q1/Q2) is an MMB3904 transistor, the base electrode of the switching triode (Q1/Q2) is connected in series with a first current limiting resistor (R10/R11) and is electrically connected with an output on-off control I/O port (OUT _ CLOSE/OUT _ OPEN) of a microcontroller U3, and the emitter electrode of the switching triode (Q1/Q2) is opposite to the ground; the micro controller U3 outputs matched signals along an output on-off control I/O port (OUT _ CLOSE/OUT _ OPEN) and enables the switch triode (Q1/Q2) to be switched on or off, and the switch triode (Q1/Q2) is switched on to enable the contact of the relay (K1/K2) to be attracted and enable the positive pole or the negative pole of the lifting motor to be communicated with +24V, so that the lifting motor rotates forwards or reversely and is matched with the lifting of the clothes pole.

Specifically, the electric motor driving module 100 of the control circuit mainly comprises a relay and a driving triode, a 5 th pin of the relay K1 is connected with the positive electrode of a 24V direct-current power supply, a 4 th pin of the relay K1 is connected with GND, a3 rd pin of the relay K1 is connected with the positive electrode of a lifting motor, a2 nd pin of the relay K1 is connected with a +24V power supply, and a1 st pin of the relay K1 is connected with the collector electrode of a switching triode Q1; the anode of the freewheeling diode D3 is connected with the 1 st pin of the relay K1, and the cathode of the freewheeling diode D3 is connected with the 2 nd pin of the relay K1; an emitter of the switching triode Q1 is connected with GND, a base of the switching triode Q1 is connected with a resistor R10, and the other end of the resistor R10 is connected with the 21 st pin of the microcontroller U3; the 5 th pin of the relay K2 is connected with the positive electrode of a 24V direct-current power supply, the 4 th pin of the relay K2 is connected with GND, the 3 rd pin of the relay K1 is connected with the negative electrode of a lifting motor, the 2 nd pin of the relay K2 is connected with a +24V power supply, and the 1 st pin of the relay K2 is connected with the collector electrode of a switching triode Q2; the anode of the freewheeling diode D2 is connected with the 1 st pin of the relay K2, and the cathode of the freewheeling diode D2 is connected with the 2 nd pin of the relay K2; the emitter of the switching triode Q2 is connected with GND, the base is connected with a resistor R11, and the other end of the resistor R11 is connected with the 20 th pin of the microcontroller U3. When the lifting drive works, the 21 st pin of the microcontroller U3 outputs high level, the switching triode Q1 is conducted, the 3 rd pin and the 5 th pin of the relay K1 are conducted, the anode of the lifting motor is conducted with the anode of the 24V direct-current power supply, the 20 th pin outputs low level, the switching triode Q2 is not conducted, the relay K2 is in a default state, the 3 rd pin and the 4 th pin are conducted, the cathode of the lifting motor is conducted with the cathode of the 24V direct-current power supply, at the moment, the motor rotates forwards, and the clothes airing rod rises; the 21 st pin of the microcontroller U3 outputs low level, the switch triode Q1 is not conducted, the relay K1 is in a default state, the 3 rd pin and the 4 th pin are conducted, the anode of the lifting motor is conducted with the cathode of the 24V direct current power supply, the 20 th pin outputs high level, the switch triode Q2 is conducted, the 3 rd pin and the 5 th pin of the relay K2 are conducted, the cathode of the lifting motor is conducted with the anode of the 24V direct current power supply, at the moment, the motor rotates reversely, and the clothes drying rod descends; the 21 st foot output low level of micro-controller U3, switch triode Q1 does not switch on, relay K1 department default state, 3 rd and 4 th foot switch on, elevator motor's positive pole and the switch-on of 24V DC power supply negative pole, the 20 th foot output low level, switch triode Q2 does not switch on, relay K2 department default state, 3 rd and 4 th foot switch on, elevator motor negative pole and the switch-on of also 24V DC power supply's negative pole, the motor does not change this moment, the clothes-horse goes up and down to stop.

In this embodiment, the stroke sensing detection module 200 includes a first hall switch H1, a second hall switch H2, a high-position limit switch SW1 and a low-position limit switch SW2, the first hall switch H1 and the second hall switch H2 are connected in parallel, power terminals (VIN) of the first hall switch H1 and the second hall switch H2 are both electrically connected to +3.3V, output terminals (VOUT) of the first hall switch H1 and the second hall switch H2 are respectively electrically connected to a detection I/O port (H1/H2) matched with the microcontroller U3, the high-position limit switch SW1 and the low-position limit switch SW2 are connected in series and electrically connected to a limit detection port (LW) of the microcontroller U42, in practice, an end of the high-position limit switch SW1 far from an electrical connection point of the low-position limit switch SW2 is electrically connected to the limit detection port (LW 1), and the high-position limit switch SW 585 and the low-position limit switch SW 57324 are electrically connected to the limit switch SW 58573 to trigger the lifting and control the high-position limit switch SW 58573 to lift and the clothes drying rod to dry clothes drying machine Stopping the rotation of the motor; when the lifting device works, the microcontroller U3 controls the first Hall switch H1 and the second Hall switch H2 to be matched with a plurality of magnets arranged on a lifting shaft of an electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the lifting of the clothes drying rod in a matched manner according to the limit detection of the high-position limit switch SW1 and the low-position limit switch SW 2.

Specifically, the stroke sensing and detecting module 200 mainly includes two single-pole hall switches connected in parallel and two limit switches connected in series, and specifically includes: the 1 st pin of the first Hall switch H1 is connected with a 3.3V power supply, the 3 rd pin is connected with GND, the 2 nd pin is connected with the 7 th pin of a microcontroller U3, and a capacitor C6 is connected between the 1 st pin and the 3 rd pin of the first Hall switch H1; the 1 st pin of the second Hall switch H2 is connected with a 3.3V power supply, the 3 rd pin is connected with GND, the 2 nd pin is connected with the 8 th pin of the microcontroller U3, and the capacitor C7 is connected between the 1 st pin and the 3 rd pin of the second Hall switch H2; the resistor R2, the high-level switch SW1 and the low-level limit SW2 are connected in series, the resistor is connected with a 3.3V power supply, the switch is connected with GND, and one end of the resistor R2 is connected with the 11 th pin of the microcontroller U3. During stroke detection, when 4 magnets on the lifting shaft sequentially pass through the first Hall switch H1 and the second Hall switch H2, pulse signals with different time sequences are received by corresponding feet of the microcontroller U3, and the pulse signals are converted into counts through the microcontroller U3 to judge the lifting position of the clothes-horse; when the clothes airing rod rises to the highest position, the high-position limit switch SW1 is disconnected, the 11 th foot position of the microcontroller U3 becomes the high level, the microcontroller U3 controls the lifting motor to stop rotating at the moment, when the clothes airing rod rises to the lowest position, the low-position limit switch SW2 is disconnected, the 11 th foot position of the microcontroller U3 becomes the high level, and the microcontroller U3 controls the lifting motor to stop rotating at the moment.

In this embodiment, the humidity detection module 300 includes an ambient humidity detection circuit 301 electrically coupled to a microcontroller U3, and a clothes humidity detection circuit 302 electrically coupled to a clothes airing rod and a microcontroller U3, where the ambient humidity detection circuit 301 includes a humidity sensor HT1 directly connected to a microcontroller U3, in this embodiment, the humidity sensor HT1 is a sensor of hh-4000-003 of honeywell, and the humidity sensor HT1 is used to detect ambient humidity in cooperation with the control of the microcontroller U3; the clothes humidity detection circuit 302 comprises a sampling circuit formed by connecting a voltage dividing resistor R8 and a voltage dividing resistor R9 in series, two ends of the sampling circuit are respectively connected with +3.3V and the ground, an electric connection point of the voltage dividing resistor R8 and the voltage dividing resistor R9 is also electrically connected with a detection I/O port PB7 of the micro-controller in a coupling mode, and two poles of the voltage dividing resistor R9 are respectively and electrically connected with a plurality of first electrode plates S1 and a plurality of second electrode plates S2 which are alternately and crossly arranged on the clothes airing rod; the microcontroller U3 detects the humidity of clothes by detecting the voltage of the electric connection point of the voltage dividing resistor R8 and the voltage dividing resistor R9.

Referring to fig. 1-2, the humidity sensing module 300 includes two parts, one being ambient humidity: mainly comprises a humidity sensor HT 1; secondly, the humidity of the clothes: the electric drying clothes mainly comprise a first electrode plate S1, a second electrode plate S2 and voltage dividing elements (R8 and R9) which are embedded on a clothes airing rod; when the humidity detection module 300 monitors that the ambient temperature is more than 90%, the drying function can be automatically started when wet clothes are on the clothes airing rod; referring to the attached figure 2, the first electrode plate S1 and the second electrode plate S2 on the clothes-horse are connected at intervals, the first electrode plate S1 and the second electrode plate S2 are isolated from the aluminum alloy clothes-horse by insulating sheets, and connecting lines for connecting the plurality of first electrode plates S1 and the plurality of second electrode plates S2 penetrate through the middle of the aluminum alloy clothes-horse; when wet clothes are covered on the clothes airing rod, the impedance between the adjacent first electrode plate S1 and the second electrode plate S2 is reduced, voltage change of a sampling circuit formed by the voltage dividing resistor R8 and the voltage dividing resistor R9 is caused, the impedance between the first electrode plate S1 and the second electrode plate S2 is connected with the voltage dividing resistor R9 in parallel, and the microcontroller U3 judges whether the drying function is continuously started or not, so that the impedance is reduced, and the wet clothes are correspondingly covered. In the circuit connection relation: the 1 st pin of the humidity sensor HT1 is connected with 3.3V voltage, the 3 rd pin is connected with GND, the 2 nd pin is connected with the 14 th pin of the microcontroller U3, a decoupling capacitor C8 is connected between the 1 st pin and the 3 rd pin of the humidity sensor HT1, and a decoupling capacitor C9 is connected between the 2 nd pin and the 3 rd pin of the humidity sensor HT 1.

Clothes humidity detection circuit: one end of the resistor R8 is connected with a 3.3V power supply, the other end is connected with the 13 th pin of the microcontroller U3, the resistor R9 is connected with the first electrode plate S1 and the second electrode plate S2 in parallel, one end is connected with the resistor R8, and the other end is connected with GND.

In the present embodiment, the indication module 400 includes a first indication unit 401 for sound indication and a second indication unit 402 for light indication; the first indicating unit 401 comprises a switching triode Q10, in this embodiment, a switching triode Q10 is an MMB3904 transistor, the switching triode Q10 is electrically connected with the negative electrode of a BUZZER BZ1, the base (b) of the switching triode Q10 is connected in series with a current-limiting resistor R57 and is electrically connected with a sound indication control port (BUZZER) of a microcontroller U3, and the emitter (e) of the switching triode Q10 is grounded; the microcontroller U3 outputs a matched signal (high level and low level) along a sound indication control port (BUZZER) to switch on or off the switching triode Q10, and the BUZZER BZ1 sounds for indication; the second indicating unit 402 comprises two parallel-connected light-emitting LED lamps (LED1/LED2), the anodes of the two light-emitting LED lamps (LED1/LED2) are electrically connected with +3.3V, the cathodes of the two light-emitting LED lamps (LED1/LED2) are connected in series with matched current-limiting resistors (R3/R6) and are electrically connected with two light-emitting indication control ports (PA1/PA0) of the microcontroller U3, and the microcontroller U3 outputs low level along the light-emitting indication control ports (PA1/PA0) to enable the two light-emitting LED lamps (LED1/LED2) to emit light for indication.

Specifically, when the electric clothes hanger works normally, a green LED lamp (LED1) is on, when the electric clothes hanger works abnormally, a red LED lamp (LED2) is on, a buzzer BZ1 sounds, the anode of the LED1 of the green LED lamp is connected with a 3.3V power supply, the cathode of the LED lamp is connected with a current-limiting resistor R7, the other end of the current-limiting resistor R7 is connected with the 6 th pin of a microcontroller U3, the anode of the LED2 of the red LED lamp is connected with a 3.3V power supply, the cathode of the LED lamp is connected with a current-limiting resistor R6, and the other end of the current-limiting; the positive electrode of the buzzer BZ1 is connected with a +5V power supply, the negative electrode is connected with the collector of a switching triode Q10, the emitter of the switching triode Q10 is connected with GND, the base is connected with a resistor R57, and the other end of the resistor R57 is connected with the 21 st pin of a microcontroller U3

In this embodiment, the microcontroller U3 is an EM357 chip; the 2 nd pin of the microcontroller U3 is connected with a +3.3V power supply, the 1 st pin is connected with GND, and the filter capacitor C4 is connected between the 1 st pin and the 2 nd pin; the 5 th, 6 th and 22 th pins of the microcontroller U3 are connected with a working state indicating circuit, the 7 th, 8 th and 11 th pins of the microcontroller U3 are connected with a stroke sensing detection module 200, and the 13 th and 14 th pins of the microcontroller U3 are connected with a humidity detection module 300; the 20 th and 21 th pins of the microcontroller U3 are connected with the electric motor driving module 100. The electric clothes hanger is powered on to work after being correctly installed, the microcontroller determines whether to open the drying function according to the environment fed back by the humidity detection module and the humidity condition of clothes, and the drying function can be automatically opened when the environment humidity is greater than 90% and wet clothes are on the clothes hanger.

The embodiment also provides an electric clothes hanger, which comprises a control panel (not shown in the attached drawing), wherein the control panel is provided with the control circuit of the intelligent electric clothes hanger.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make modifications or changes equivalent to the above disclosed technical content without departing from the technical scope of the present invention.

Claims

1. The control circuit of the intelligent electric clothes hanger is characterized by comprising a power supply module and a microcontroller, wherein the microcontroller is coupled and electrically connected with an electric motor driving module, a stroke sensing detection module, a humidity detection module and an indication module which are controlled by the microcontroller; the power supply module is used for converting alternating current of a mains grid into a direct current power supply for the electric clothes hanger to work; the microcontroller can control the stroke sensing detection module to be matched with a plurality of magnets arranged on a lifting shaft of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the electric motor driving module to drive the lifting motor to work according to the position of the clothes drying rod detected by the stroke sensing detection module; the microcontroller can also control the humidity detection module to detect the environment humidity and the clothes humidity and control the drying device of the clothes hanger to be opened or closed according to the environment humidity and the clothes humidity detected by the humidity detection module; the microcontroller also controls the indicating module to indicate the working state of the electric clothes hanger.

2. The control circuit of the intelligent electric clothes rack according to claim 1, wherein the power module comprises an AC/DC power module electrically coupled with a utility grid and a voltage stabilizing module electrically coupled with the AC/DC power module; the AC/DC power supply module comprises a WA3-220S05A2A power supply module PW1 used for converting alternating current of a commercial power grid into +24V direct current voltage; the voltage stabilizing module comprises an HT7333 voltage stabilizing chip U2, and the HT7333 voltage stabilizing chip U2 is used for stabilizing +24V direct-current voltage into + 3.3V.

3. The control circuit of the intelligent electric clothes hanger according to claim 2, wherein the electric motor driving module comprises a motor forward driving branch and a motor reverse driving branch which are electrically coupled with the lifting motor, the motor forward driving branch and the motor reverse driving branch both comprise relays, one end of a control coil of each relay is connected with a current limiting resistor in series and is electrically connected with +24V, the other end of the control coil of each relay is electrically connected with a collector of a switch triode, a base of the switch triode is connected with a first current limiting resistor in series and is electrically connected with an output on-off control I/O port of the microcontroller, and an emitter of the switch triode is opposite to the ground; the micro controller outputs matched signals along the output on-off control I/O port and enables the switch triode to be switched on or off, the switch triode is switched on to enable the contact of the relay to be attracted and enable the positive pole or the negative pole of the lifting motor to be communicated with +24V, and the lifting motor rotates forwards or reversely and is matched with the clothes airing rod to lift.

4. The control circuit of the intelligent electric clothes hanger according to claim 3, wherein the switching triode is an MMB3904 transistor.

5. The control circuit of the intelligent electric clothes hanger according to claim 2, wherein the stroke sensing detection module comprises a first hall switch H1, a second hall switch H2, a high-position limit switch SW1 and a low-position limit switch SW2, the first hall switch H1 and the second hall switch H2 are connected in parallel, power supply ends of the first hall switch H1 and the second hall switch H2 are both electrically connected with +3.3V, output ends of the first hall switch H1 and the second hall switch H2 are respectively electrically connected with a detection I/O port matched with the microcontroller, and the high-position limit switch SW1 and the low-position limit switch SW2 are connected in series and are electrically connected with a limit detection port of the microcontroller; the microcontroller controls the first Hall switch H1 and the second Hall switch H2 to be matched with a plurality of magnets arranged on a lifting shaft of the electric clothes hanger to detect the lifting position of a clothes drying rod of the clothes hanger, and controls the lifting of the clothes drying rod in a matching way according to the limit detection of the high-position limit switch SW1 and the low-position limit switch SW 2.

6. The control circuit of the intelligent electric clothes hanger according to claim 2, wherein the humidity detection module comprises an environment humidity detection circuit electrically coupled with the microcontroller and a clothes humidity detection circuit electrically coupled with the clothes drying rod and the microcontroller, wherein,

the environment humidity detection circuit comprises a humidity sensor HT1 directly connected with the microcontroller, and the humidity sensor HT1 is used for detecting the environment humidity in cooperation with the control of the microcontroller;

the clothes humidity detection circuit comprises a sampling circuit formed by connecting a divider resistor R8 and a divider resistor R9 in series, wherein two ends of the sampling circuit are respectively connected with +3.3V and the ground, the electric connection point of the divider resistor R8 and the divider resistor R9 is also electrically connected with a detection I/O port of the micro-controller in a coupling manner, and two poles of the divider resistor R9 are also respectively and electrically connected with a plurality of first electrode plates S1 and a plurality of second electrode plates S2 which are alternately and crossly arranged on the clothes drying rod; the micro controller detects the humidity of the clothes by detecting the voltage of the electric connection point of the voltage dividing resistor R8 and the voltage dividing resistor R9.

7. The control circuit of the intelligent electric clothes hanger according to claim 2, wherein the indication module comprises a first indication unit for sound indication and a second indication unit for light indication; the first indicating unit comprises a switching triode Q10, the switching triode Q10 is electrically connected with the negative electrode of the buzzer, the base electrode of the switching triode Q10 is connected in series with a current limiting resistor R57 and is electrically connected with the sound indicating control port of the micro controller, and the emitter electrode of the switching triode Q10 is connected to the ground; the micro controller outputs matched signals along a sound indication control port to enable the switching triode Q10 to be switched on or off, and the buzzer sounds for indication in a matched mode; the second indicating unit comprises two parallel light-emitting LED lamps, the anodes of the two light-emitting LED lamps are electrically connected with 3.3V, the cathodes of the two light-emitting LED lamps are connected in series with matched current-limiting resistors and are electrically connected with two light-emitting indicating control ports of the microcontroller, and the microcontroller outputs low level along the light-emitting indicating control ports to enable the two light-emitting LED lamps to emit light for indicating.

8. The control circuit of the intelligent electric clothes hanger according to claim 7, wherein the switching transistor Q10 is an MMB3904 transistor.

9. The control circuit of an intelligent electric clothes hanger according to any one of claims 1 to 8, wherein the microcontroller is an EM357 ARM controller.

10. An electric clothes hanger, which comprises a control panel, and is characterized in that the control panel is provided with a control circuit of the intelligent electric clothes hanger as claimed in claim 9.