Intelligent clothes hanger system

Abstract

The invention discloses an intelligent clothes hanger system which comprises a main control unit, an environment monitoring unit, an executing mechanism and a user interaction unit which are modularly designed, and the main control unit adopts an AT89C52 single-chip microcomputer as a core processor; the environment monitoring unit comprises an SHT11 temperature and humidity sensor, a light sensing module with an ADC0804 analog-to-digital converter matched with a photoresistor and a raindrop detection module, the executing mechanism comprises a telescopic airing rod driven by a direct-current motor and a folding canopy, and airing and retracting of the clothes hanger can automatically respond to weather changes through the environment monitoring unit. The system can monitor the environment temperature and humidity, the illumination intensity and the rainfall state in real time, when it is detected that it rains or nights come, the clothes hanger is automatically retracted, the canopy is unfolded, airing is automatically unfolded on sunny days, the manual mode and the parameter setting function are supported, and the system has the advantages of being low in power consumption, fast in response and high in reliability.

Description

Technical Field

[0001] This invention relates to an intelligent clothes drying rack system, and particularly to the field of smart home technology. Background Technology

[0002] Traditional clothes drying racks are single-function and rely entirely on manual operation, making them unable to cope with sudden weather changes. When users are out and about and it rains, their clothes often get wet, requiring them to be washed again, wasting water and increasing the burden on users. Although some electric clothes drying racks have appeared on the market, most only have simple lifting functions and lack intelligent environmental sensing and automatic control capabilities.

[0003] The following are the main problems existing in the prior art: 1. Lack of comprehensive environmental monitoring capabilities, unable to perceive key parameters such as temperature, humidity, light intensity, and rainfall in real time; 2. The control logic is simple and cannot determine the best drying strategy based on a combination of multiple environmental factors; 3. The human-computer interaction interface is rudimentary, making it difficult for users to understand the system status and set parameters; 4. The mechanical structure design is unreasonable, the rain protection measures are insufficient, and the reliability of the actuator needs to be improved. Summary of the Invention

[0004] This invention provides an intelligent clothes drying rack system to overcome the shortcomings of traditional clothes drying racks in the prior art, which cannot automatically adapt to weather changes.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention discloses an intelligent clothes drying rack system, which includes a modularly designed main control unit, an environmental monitoring unit, an actuator, and a user interaction unit. The environmental monitoring unit enables the clothes drying rack to automatically adapt to weather changes during drying and retraction.

[0006] The main control unit uses an AT89C52 microcontroller as its core processor, responsible for receiving sensor data, processing and analyzing it, and issuing control commands. The microcontroller has 8KB of Flash program memory, 256 bytes of RAM, and 32 I / O ports, fully meeting the system control requirements. The main control circuit also includes a reset circuit, a clock circuit, and a power management circuit.

[0007] The environmental monitoring unit comprises three subsystems: 1. Temperature and humidity acquisition subsystem: The SHT11 digital temperature and humidity sensor is used, which communicates with the main control unit through the IIC bus. The measurement accuracy is ±3%RH (humidity) and ±0.4℃ (temperature). 2. Light sensing subsystem: Composed of LDR photoresistor and ADC0804 analog-to-digital converter, it converts light intensity into digital signals for processing by the main control unit; 3. Raindrop Detection Subsystem: A conductive raindrop sensor is used. When a raindrop falls on the detection plate, the circuit is turned on and sends a signal to the main control unit.

[0008] The implementing agencies include: 1. Drying rod drive mechanism: A 12V DC motor is used in conjunction with a worm gear reducer to drive the drying rod to extend and retract horizontally, with a maximum load of 10kg; 2. Awning control mechanism: The folding awning is controlled by a 6V DC motor through a linkage mechanism. The awning is made of waterproof Oxford cloth and has an unfolded area of ​​1.5m × 0.8m.

[0009] The user interaction unit includes: 1. LCD1602 LCD screen: Displays current temperature and humidity, light intensity, system operating mode and status; 2. Independent buttons: including mode switching button, parameter setting button and confirmation button, used to set temperature and humidity thresholds and light intensity thresholds.

[0010] The power module within the actuator provides the various operating voltages required by the system: 1. AC-DC conversion circuit: converts 220V AC mains power into 12V, 6V and 5V DC power; 2. Lithium battery backup: It adopts an 18650 lithium battery pack with a capacity of 2000mAh, which automatically switches when the mains power is interrupted to ensure the continuous operation of the system.

[0011] The beneficial effects achieved by this invention are: it can monitor the ambient temperature and humidity, light intensity and rainfall status in real time; when it detects rain or nightfall, it automatically retracts the clothes rack and unfolds the awning; and it automatically unfolds the clothes rack for drying on sunny days. This system also supports manual mode and parameter setting function, and has the characteristics of low power consumption, fast response and high reliability. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a hardware unit circuit diagram of the present invention; Figure 2 This is a circuit diagram showing the connection between the SHT11 and the microcontroller of this invention; Figure 3 This is the photosensitivity testing circuit of the present invention; Figure 4 This invention relates to a motor drive control circuit. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0014] Example 1 like Figure 1-4 As shown, an intelligent clothes drying rack system includes a modularly designed main control unit, an environmental monitoring unit, an actuator, and a user interaction unit. The environmental monitoring unit enables the clothes drying rack to automatically adapt to weather changes during drying and retraction.

[0015] Hardware implementation: The main control unit is based on the AT89C52 microcontroller. Its P0 port is connected to the data line of the LCD1602 via pull-up resistors, and P2.0-P2.2 are connected to the RS, RW, and E control lines of the LCD, respectively. The P1 port is connected to an independent button circuit, which uses a matrix scanning method to detect the button status. The P3.2 and P3.3 external interrupt interfaces are connected to the interrupt signals of the rain sensor and the light sensor module, respectively.

[0016] In the environmental monitoring unit, the SCK and DATA pins of the SHT11 temperature and humidity sensor are connected to the P3.4 and P3.5 pins of the microcontroller, respectively, and communicate via software-simulated IIC protocol. The light sensing module consists of an LDR photoresistor and a 10kΩ voltage divider resistor. The output voltage signal is converted into an 8-bit digital value by an ADC0804, and the conversion result is transmitted to the microcontroller via a parallel bus. The raindrop sensor adopts a normally open contact design; when it rains, the contact closes, triggering an external interrupt in the microcontroller.

[0017] In the actuator, the drying rack drive motor is controlled by an L298N motor driver chip. The chip's IN1-IN4 input pins are connected to the microcontroller's P2.4-P2.7 pins, and its OUT1-OUT4 outputs drive the motor in both forward and reverse directions. The awning control motor is driven by a ULN2003 Darlington array, with its input pins connected to the microcontroller's P1.4-P1.7 pins. Both motors are equipped with limit switches to ensure automatic stopping when they reach their limit positions.

[0018] In the power module, the AC-DC converter uses the LM2596 switching regulator chip, with an input of 220VAC and outputs of 12VDC, 6VDC, and 5VDC. The lithium battery charging management uses the TP4056 chip to achieve automatic switching between charging and discharging. The power status monitoring circuit sends the voltage signal to the microcontroller's ADC input terminal through a voltage divider resistor to implement a low-voltage alarm function.

[0019] Software implementation: The system software adopts a modular design and mainly includes the following functional modules: 1. Main control module: Completes system initialization and coordinates the work of various functional modules; 2. Environmental monitoring module: Collects temperature, humidity, light intensity, and raindrop signals at regular intervals, and performs data filtering and processing; 3. Control Decision Module: Determines the working status of the clothes rack based on environmental parameters and user settings; 4. Motor drive module: Generates PWM signals to control the motor speed and direction; 5. Human-computer interaction module: processes key input and updates LCD display content; 6. Anomaly Handling Module: Monitors system operating status and handles various anomalies; 7. Wireless communication module: Used to connect with a smartphone APP for remote monitoring and control.

[0020] The system workflow is as follows: 1. Power-on initialization, checking the status of each hardware module; 2. Enter standby mode, and the LCD displays a welcome screen; 3. Periodically collect environmental parameters and update the displayed content; 4. Determine the next action based on the current working mode (automatic / manual) and the status of the actuator; 5. In automatic mode, when rain or insufficient sunlight is detected, the clothes rack will automatically retract and the awning will automatically unfold; when the weather clears up, the awning will automatically retract and the clothes rack will automatically unfold. 6. Repeat the above monitoring-decision-control process until the system is shut down.

[0021] Parameter settings: Users can set the following parameters via buttons: 1. Temperature threshold: Set the minimum drying temperature, default is 15℃; 2. Humidity threshold: Set the maximum allowable humidity, default is 75%RH; 3. Light threshold: Set the minimum light intensity, default is 200 Lux; 4. Working mode: Automatic mode or manual mode.

[0022] Security protection: The system is designed with multiple security protection measures: 1. Motor overcurrent protection: Immediately cuts off the motor power supply when an abnormal current is detected; 2. Limit protection: The drying rack and awning will automatically stop when they reach their limit positions; 3. Anti-pinch protection: The motor will immediately reverse when a sudden increase in resistance is detected; 4. Power-off memory: System parameters and status are stored in EEPROM and are not lost after power failure.

[0023] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The terminology used in the description of this application is only for describing specific embodiments and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

Claims

1. An intelligent clothes hanger system, characterized in that, The main control unit, the environment monitoring unit, the actuator and the user interaction unit are modularized; The main control unit adopts AT89C52 single-chip microcomputer as the core processor; The environment monitoring unit comprises SHT11 temperature and humidity sensor, ADC0804 analog-digital converter, light sensing module with photosensitive resistor and raindrop detection module; The actuator comprises telescopic drying rod driven by direct current motor and folding rain shed; The drying and retracting of the drying rack automatically respond to weather changes through the environment monitoring unit.

2. The smart clothes hanger system of claim 1, wherein, The user interaction unit comprises LCD1602 liquid crystal display and independent buttons.

3. The smart clothes hanger system of claim 1, wherein, The main control unit communicates with the SHT11 temperature and humidity sensor through IIC bus, connects with the ADC0804 analog-digital converter through parallel interface and controls the motor driving circuit through GPIO port.

4. The smart clothes hanger system of claim 1, wherein, The raindrop detection module adopts conductive raindrop sensor and is installed on the top of the drying rack to send signal to the main control unit when detecting rainfall.

5. The smart clothes hanger system of claim 1, wherein, The direct current motor drives the telescopic drying rod through worm and gear reduction mechanism and controls the unfolding and folding of the rain shed through connecting rod mechanism.

6. The smart clothes hanger system of claim 1, wherein, A wireless communication module is arranged on the main control unit and is used to realize connection with the smart phone APP, remote monitoring and control.

7. The smart clothes hanger system of claim 5, wherein, A power module is arranged near the direct current motor and comprises AC-DC conversion circuit and lithium battery backup unit to ensure that the system can still work normally when the power is off.

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