Multiplexing circuit, clothes airing machine remote control device and control method thereof

Abstract

This invention discloses a multiplexed circuit, a clothes drying rack remote control device, and its control method. The multiplexed circuit includes a controller, a switching transistor, and one or more control components. Each group of control components includes a switching unit and an LED unit. One end of the switching unit is connected to one end of the LED unit, and the other end of the switching unit is connected to a power supply or ground. The other end of the LED unit is connected to a power supply or ground through the switching transistor. Each group of control components is connected to the controller's I / O port through the connection terminals of the switching unit and the LED unit. The control terminal of the switching transistor is connected to the controller, and the controller controls the state of the switching transistor to control the LED unit to connect to the power supply or ground. By controlling the switching transistor, this invention can connect the input switching unit and the output LED unit to the same I / O port of the controller, effectively saving the number of I / O ports used, making the control functions of the device more diversified, and further improving the intelligence of the device.

Description

Technical Field

[0001] This application relates to the field of clothes drying control technology, specifically to a multiplexed circuit, a clothes drying machine remote control device, and its control method. Background Technology

[0002] Smart clothes drying racks have become an integral part of people's lives. According to the white paper on the development of the smart clothes drying rack industry ecosystem compiled by CSHIA, the sales of smart clothes drying rack products reached 10.4 billion yuan in 2022, already reaching a scale of over 10 billion yuan, and the future growth rate is expected to reach 21%. Clothes drying racks have basically replaced the original traditional drying methods, which can greatly improve the efficiency of drying clothes and enhance people's clothes drying experience.

[0003] In terms of control, existing clothes drying racks offer only limited functions, typically including raising, lowering, and turning the lights on and off. This fails to provide a diverse drying experience, making them unfriendly to users with high requirements for drying and control. Furthermore, they do not showcase the intelligent drying function of the clothes drying rack and do not offer a significant improvement in intelligence compared to hand-cranked clothes drying methods. Summary of the Invention

[0004] The primary objective of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a multiplexed circuit that enables more diversified control of devices such as clothes dryers, thereby improving the intelligence level of such devices.

[0005] The second objective of this invention is to provide a remote control device for a clothes drying rack.

[0006] The third objective of this invention is to provide a method for operating a remote control device for a clothes drying rack.

[0007] The first objective of this invention is achieved through the following technical solution: a multiplexed circuit, comprising a controller, a switching transistor, and one or more control components; each set of control components includes a switching unit and an LED unit;

[0008] One end of the switching unit is connected to one end of the LED unit, and the other end of the switching unit is connected to the power supply or ground; the other end of the LED unit is connected to the power supply or ground through a switching transistor.

[0009] Each control unit is connected to the controller's I / O port via the connection terminals of the switch unit and the LED unit;

[0010] The control terminal of the switching transistor is connected to the controller, and the controller controls the state of the switching transistor to control the LED unit to connect to the power supply or ground.

[0011] Preferably, the switching transistor is a bipolar transistor or a MOSFET;

[0012] When the switching transistor is a bipolar transistor, the first, second, and third terminals of the switching transistor correspond to the base, emitter, and collector, respectively.

[0013] When the switching transistor is a MOSFET, the first, second, and third terminals of the switching transistor correspond to the gate, source, and drain, respectively.

[0014] In each group of control components, the other end of the LED unit is connected to the second or third terminal of the switching transistor, and the third or second terminal of the switching transistor is connected to the power supply or ground. The first terminal of the switching transistor is connected to another IO port of the controller as the control terminal.

[0015] Preferably, the LED units include one or more types, and the number of each type of LED unit is one or more; different types of LED units share one or more LEDs.

[0016] The second objective of this invention is achieved through the following technical solution: a clothes drying rack remote control device, comprising the multiplexing circuit described in the first objective of this invention;

[0017] In each group of control components, the switch unit is connected to the I / O port of the controller and is used to trigger the controller to send a corresponding trigger signal to the clothes drying machine host, so that the clothes drying machine performs the corresponding operation;

[0018] In each group of control components, the LED unit is connected to the I / O port of the controller. The controller controls the state of the LED unit according to the state of the corresponding switch unit to indicate the current state of the clothes drying rack.

[0019] Preferably, in the multiplexing circuit, the types of switching units include one or more of the following: first switching unit, second switching unit, and functional switching unit; and the number of each type of switching unit is one or more.

[0020] The first switch unit is connected to the first IO port of the controller and is used to trigger the controller to send a clothes drying rack descent trigger signal to the clothes drying rack host;

[0021] The second switch unit is connected to the second IO port of the controller and is used to trigger the controller to send a clothes drying rack raising trigger signal to the clothes drying rack main unit;

[0022] The function switch unit is connected to the third IO port of the controller and is used to trigger the controller to send the corresponding function start / stop trigger signal of the clothes dryer to the clothes dryer host, and / or trigger the controller to send the function mode switching trigger signal to the clothes dryer host;

[0023] The current status of the clothes dryer indicated by the LED unit includes one or more of the following: the clothes dryer is on, off, and currently in a functional mode.

[0024] Furthermore, the function switch unit includes one or more of a first function switch unit, a second function switch unit, a third function switch unit, a fourth function switch unit, and a fifth function switch unit, and the third IO port corresponding to the controller includes one or more of port a, port b, port c, port d, and IO port e;

[0025] The first function switch unit is connected to the controller's IO port a, and is used to trigger the controller to send a trigger signal to turn the clothes drying rack lighting on or off to the clothes drying rack host, and / or trigger the controller to send a lighting mode switching trigger signal to the clothes drying rack host;

[0026] The second function switch unit is connected to the controller's IO port b, and is used to trigger the controller to send a disinfection on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a disinfection mode switching trigger signal to the clothes drying machine host;

[0027] The third function switch unit is connected to the controller's IO port c, and is used to trigger the controller to send a drying on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host;

[0028] The fourth function switch unit is connected to the controller's IO port d and is used to trigger the controller to send a drying mode on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host;

[0029] The fifth function switch unit is connected to the controller's IO port e and is used to trigger the controller to send a clothes drying rack on or off trigger signal to the clothes drying rack host.

[0030] Furthermore, the LED unit types include one or more of the following: first LED unit, second LED unit, third LED unit, and fourth LED unit; and the number of each type of LED unit is one or more.

[0031] The controller is connected to the control unit of the group where the first LED unit is located, and is used to control the state of the first LED unit according to the state of the first function switch unit, so as to indicate the lighting function state of the clothes drying rack, or the current lighting mode.

[0032] The controller is connected to the control unit of the group where the second LED unit is located, and is used to control the state of the second LED unit according to the state of the second function switch unit, so as to indicate the state of the clothes drying rack's disinfection function, or the current disinfection mode.

[0033] The controller is connected to the control unit of the group where the third LED unit is located, and is used to control the state of the third LED unit according to the state of the third function switch unit, so as to indicate the drying function state of the clothes dryer, or the current drying mode.

[0034] The controller is connected to the control unit of the group containing the fourth LED unit and is used to control the state of the fourth LED unit according to the state of the fourth function switch unit, so as to indicate the drying function state of the clothes dryer or the current drying mode.

[0035] Preferably, it also includes a Bluetooth communication module connected to the controller, the controller communicating with the clothes drying machine host through the Bluetooth communication module to send corresponding trigger signals to the clothes drying machine host.

[0036] The second objective of this invention is achieved through the following technical solution: a method for operating the clothes drying rack remote control device according to the second objective of this invention, comprising:

[0037] The controller controls the switching transistor to be in the off state, and the IO ports connected to each group of control components are used as input terminals;

[0038] The controller polls each of the above input terminals, determines the pressed state of the switch unit in the corresponding connected control device based on the level signal received at each input terminal, and sends a corresponding trigger signal to the clothes drying machine host based on the pressed state of the switch unit.

[0039] The control switch is in the ON state, and the IO ports connected to each group of control components are used as output terminals;

[0040] The controller polls each of the above output terminals and outputs a preset level signal to the corresponding IO port according to the pressed state of the switch unit, so as to control the state of the corresponding LED unit.

[0041] Preferably, when the controller polls each IO port that is used as an input terminal, if it is determined from the level signal received by IO port a that the first function switch unit is pressed, then when the controller polls each IO port that is used as an output terminal in the next round, it sends a corresponding level signal to the IO port connected to the first LED unit to control the state of the first LED unit and indicate the lighting function state or the current lighting mode.

[0042] When the controller polls each IO port that is used as an input terminal, if it determines that the second function switch unit is pressed based on the level signal received by IO port b, then when the controller polls each IO port that is used as an output terminal in the next round, it sends the corresponding level signal to the IO port connected to the second LED unit to control the state of the second LED unit and indicate the disinfection function state or the current disinfection mode.

[0043] When the controller polls each IO port that is used as an input, if it determines that the third function switch unit is pressed based on the level signal received by IO port c, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the third LED unit to control the state of the third LED unit and indicate the drying function state or the current drying mode.

[0044] When the controller polls each IO port that is used as an input, if it determines that the fourth function switch unit is pressed based on the level signal received by IO port d, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the fourth LED unit to control the state of the fourth LED unit and indicate the drying function state or the current drying mode.

[0045] The present invention has the following advantages and effects compared with the prior art:

[0046] (1) The multiplexing circuit of the present invention includes a controller, a switching transistor, and one or more control components; each control component includes a switching unit and an LED unit, one end of the switching unit is connected to one end of the LED unit, and the other end of the switching unit is connected to a power supply or ground; the other end of the LED unit is connected to a power supply or ground through the switching transistor; each control component is connected to the I / O port of the controller through the connection terminal of the switching unit and the LED unit; the control terminal of the switching transistor is connected to the controller, and the controller controls the state of the switching transistor to control the LED unit to connect to the power supply or ground. By controlling the switching transistor, the multiplexing circuit of the present invention can connect the switching unit as input and the LED unit as output to the same I / O port of the controller, effectively saving the number of I / O ports used, thus making the control functions of the device (such as a clothes dryer) more diversified and further improving the intelligence of the device.

[0047] (2) In the multiplexing circuit of the present invention, the types of LED units include one or more, and the number of each type of LED unit is one or more. Different types of LED units can share one or more LEDs. For example, it includes three types of LED units, from the first LED unit to the third LED unit. The LED in the first LED unit can also be used as the LED in the fifth LED unit. The above configuration further reduces the number of controller IO ports.

[0048] (3) The clothes drying rack remote control device of the present invention includes the multiplexing circuit of the present invention, wherein the clothes drying rack can be triggered to perform corresponding operations through the switching unit, and the current status of the clothes drying rack can be indicated through the LED unit. By using the multiplexing circuit of the present invention, the number of I / O ports used by the controller (such as a microcontroller) in the clothes drying rack remote control device can be effectively reduced. Therefore, when the functions of the clothes drying rack are the same, a controller with fewer I / O ports can be used, saving the manufacturing cost of the remote control. When a controller (such as a microcontroller) with the same number of I / O ports is used, the use of the multiplexing circuit of the present invention can realize the control of more functions of the clothes drying rack, and improve the user experience of the clothes drying rack.

[0049] (4) In the clothes drying rack remote control device of the present invention, the switch unit includes one or more of the following: first switch unit, second switch unit, and function switch unit. The first switch unit and the second switch unit are used to trigger the clothes drying rack to descend and ascend, respectively. The function switch unit is used to trigger the start and stop of the corresponding function of the clothes drying rack or the switching of different function modes. The LED unit corresponding to each switch unit and forming each group of control components indicates the current status of the clothes drying rack, including whether the corresponding function of the clothes drying rack is on or off and the current function mode. The remote control device of the present invention can realize the raising and lowering of the clothes drying rack and the triggering of different functions. At the same time, the controller can indicate the start and stop status of the corresponding function of the clothes drying rack or the current function mode through the LED unit that shares the IO port with the switch unit. The indicated functions include clothes drying rack lighting, disinfection, drying, air drying, etc. Based on this, when the number of controller IO ports is limited, the remote control device of the present invention can realize the indication of more functions and function modes.

[0050] (5) The clothes drying rack remote control device of the present invention includes a Bluetooth communication module connected to the controller. The controller communicates with the clothes drying rack host through the Bluetooth communication module to send corresponding trigger signals to the clothes drying rack host. The clothes drying rack remote control device of the present invention communicates with the clothes drying rack host via Bluetooth communication. Compared with the 433MHz communication used by current clothes drying rack remote controls, Bluetooth communication can achieve advantages such as low power consumption, low frame loss rate, and high penetration, thus greatly improving the user experience.

[0051] (6) The working method of the clothes drying rack remote control device of the present invention is as follows: the controller controls the switch tube to be in the off state, and the IO port connected to each group of control components is used as the input terminal; the controller polls the above input terminals, determines the pressed state of the switch unit in the corresponding connected control component according to the level signal received by each input terminal, and sends a corresponding trigger signal to the clothes drying rack host according to the pressed state of the switch unit; the controller controls the switch tube to be in the on state, and the IO port connected to each group of control components is used as the output terminal; the controller polls the above output terminals, and outputs a preset level signal to the corresponding IO port according to the pressed state of the switch unit to control the state of the corresponding LED unit. In the method of the present invention, the IO ports of the controller are polled sequentially as input terminals and output terminals. Combined with the control of the switch tube, the state of the switch unit can be detected and the state of the LED unit can be controlled through the same IO port; the method of the present invention enables the remote control device to trigger the clothes drying rack to perform more functions and to identify more functions of the clothes drying rack, thereby improving the intelligence level of the clothes drying rack and other equipment. Attached Figure Description

[0052] Figure 1 This is a block diagram of the multiplexing circuit principle of the present invention.

[0053] Figure 2 This is a circuit diagram of the remote control device for the clothes drying rack of the present invention.

[0054] Figure 3 This is a flowchart illustrating the working method of the remote control device for the clothes drying rack of the present invention. Detailed Implementation

[0055] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0056] Example 1

[0057] Existing electric clothes drying racks and other electronically controlled equipment are limited in terms of control by the number of I / O ports in the controller hardware (such as remote control). The available functions are too limited, usually only including buttons for raising, lowering, lighting, etc., which cannot achieve a more diverse drying experience.

[0058] Based on the problems existing in the prior art, this embodiment provides a multiplexing circuit, such as... Figure 1As shown, the multiplexing circuit includes a controller, a switching transistor, and one or more control components; each group of control components includes a switching unit and an LED unit. Within each group of control components, the switching unit may include one or more switches; when there are multiple switches, they can be combined into a switching unit through parallel and / or series connections. The LED unit may include one or more LEDs; when there are multiple LEDs, they can be combined into an LED unit through parallel and / or series connections.

[0059] In this embodiment, one end of the switching unit is connected to one end of the LED unit, and the other end of the switching unit is connected to the power supply or ground; the other end of the LED unit is connected to the power supply or ground through a switching transistor.

[0060] In this embodiment, each set of control components is connected to the I / O port of the controller through the connection terminals of the switch unit and the LED unit; the control terminal of the switch is connected to the controller, and the controller controls the state of the switch to control the LED unit to connect to power or ground.

[0061] In this embodiment, the LED units include one or more types, and the number of each type of LED unit is one or more; different types of LED units share one or more LEDs. For example, the multiplexing circuit uses three types of LED units, namely the first LED unit, the second LED unit, and the third LED unit. LED0 in the first LED unit can also be used as an LED in the third LED unit. When LED0 belongs to the first LED unit, it is triggered to be turned on or off by a switching unit; when LED0 belongs to the third LED unit, it is triggered to be turned on or off by another switching unit.

[0062] In this embodiment, the switching transistor can be a bipolar transistor or a MOSFET, specifically:

[0063] When the switching transistor is a bipolar junction transistor, the first, second, and third terminals of the switching transistor correspond to the base, emitter, and collector, respectively.

[0064] When the switching transistor is a MOS transistor, the first, second, and third terminals of the switching transistor correspond to the gate, source, and drain, respectively.

[0065] In each group of control components, the other end of the LED unit is connected to the second or third terminal of the switching transistor, and the third or second terminal of the switching transistor is connected to the power supply or ground. The first terminal of the switching transistor is connected to another IO port of the controller as the control terminal.

[0066] In this embodiment, as Figure 2As shown, in each group of control components, the switching unit includes a switch, and the LED unit includes an LED; the switching unit can be a button, with one end connected to the power supply and the other end connected to the cathode of the LED unit; in each group of control components, the connection end between the button and the LED unit is connected to an I / O port of the controller; when the switching transistor is as follows... Figure 2 When using the PMOS transistor shown, the anode of the LED unit is connected to the drain of the PMOS transistor, the source of the PMOS transistor is connected to the power supply through resistor R2, the gate of the PMOS transistor is connected to the power supply through resistor R3, and the IO port LEDC of the switching transistor is connected to the gate of the PMOS transistor through resistor R1.

[0067] In this embodiment, the controller controls the state of the switching transistor, making the I / O ports connected to each group of control components function as input or output ports. When the controller controls the switching transistor to be off, the circuit containing the LED unit is not conductive. At this time, the controller can use the I / O ports connected to each group of control components as input ports. If the other end of the switching unit is connected to the power supply, the corresponding I / O port will detect a high level when the switching unit is operated. Therefore, the controller can determine whether the corresponding switching unit has been operated based on the level signal detected by the I / O port. When the controller controls the switching transistor to be on, the circuit containing the LED unit is conductive. At this time, the controller can use the I / O ports connected to each group of control components as output ports. If the LED is connected to the positive terminal of the power supply through the switching transistor, the controller can control the corresponding I / O port connected to the LED to a low level according to control requirements, such as the switch state, and the corresponding LED will brighten. In this embodiment, the controller scans each I / O port in a polling manner. In two consecutive polls, the controller's I / O ports are used as input ports and output ports, respectively.

[0068] In summary, in this embodiment of the multiplexed circuit, one I / O port of the controller is connected to a group of control components. By controlling the state of the switching transistors, the LED unit can be powered on or grounded. When the LED unit is not powered on or grounded, the I / O port of the controller connected to the control components can be used as an input to detect the state of the switching unit (whether it is pressed). When the LED unit is powered on or grounded, the I / O port of the controller connected to the control components can be used as an output. Based on this, the controller can control the corresponding LED unit to turn on according to the state of the switching unit to identify the relevant state. Therefore, the multiplexed circuit of this embodiment can connect the switching unit as input and the LED unit that needs to be controlled as output to the same I / O port of the controller, effectively saving the number of I / O ports used. This allows for more diversified control functions of the device (e.g., the controlled clothes dryer), further improving the intelligence of the device.

[0069] Example 2

[0070] This embodiment discloses a remote control device for a clothes drying rack. A clothes drying rack generally includes a main unit and a drying rod. The main unit is typically mounted on the ceiling and contains a main controller, a power system, and other components. The power system may include a motor, a reel, a pulley assembly, and a steel wire rope. The main controller is connected to the motor via a motor driver to control the motor's rotation. The reel is driven by the motor's output shaft. One end of the steel wire rope is mounted on the reel, and the other end passes through a pulley in the pulley assembly, changing its direction (from horizontal to vertical) before being fixedly connected to the drying rod below the main unit. The reel rotates under the motor's drive to wind up and unwind the steel wire rope, thereby causing the drying rod assembly on the steel wire rope to move upwards or downwards.

[0071] Currently, clothes drying racks are mainly controlled in the following ways: (1) through a remote control device wirelessly connected to the clothes drying rack; (2) through a user terminal APP; and (3) through voice control. The first method, namely controlling the clothes drying rack with a remote control, is more widely used and is suitable for users of all ages. Clothes drying racks are generally installed in the center of the balcony. To avoid installing additional lighting devices, clothes drying racks generally have a lighting function module. In addition, to meet the needs of clothing disinfection and faster drying of the clothes rack, many clothes drying racks also have disinfection, drying, and air drying function modules. In order to realize the raising and lowering of the clothes drying rack and the realization of the above functions, corresponding buttons need to be set on the remote control device. The more functions there are, the more buttons are required. In addition, if the corresponding function status needs to be indicated by LED, the controller of the clothes drying rack remote control device needs to have more IO ports, which increases the manufacturing cost of the remote control device to a certain extent. If the original controller is still used, it will limit the realization of some functions of the clothes drying rack.

[0072] To address the aforementioned technical problems in the prior art, the clothes drying rack remote control device of this embodiment includes the multiplexing circuit shown in Embodiment 1. Specifically:

[0073] In each group of control components of the multiplexing circuit, the switching unit is connected to the IO port of the controller and is used to trigger the controller to send a corresponding trigger signal to the clothes drying machine host, so that the clothes drying machine performs corresponding operations, including raising the clothes drying rod, lowering the clothes drying rod, turning on and off various functions, and switching various function modes.

[0074] In each group of control components of the multiplexing circuit, the LED unit is connected to the IO port of the controller. The controller controls the state of the LED unit according to the state of the corresponding switch unit to indicate the current state of the clothes drying machine.

[0075] In the multiplexing circuit described in this embodiment, the switching unit types include one or more of the following: a first switching unit, a second switching unit, and a functional switching unit; wherein:

[0076] The first switch unit is connected to the first IO port of the controller and is used to trigger the controller to send a clothes drying rack descent trigger signal to the clothes drying rack host;

[0077] The second switch unit is connected to the second IO port of the controller and is used to trigger the controller to send a clothes drying rack raising trigger signal to the clothes drying rack main unit;

[0078] The function switch unit is connected to the third IO port of the controller and is used to trigger the controller to send the corresponding function start / stop trigger signal of the clothes dryer to the clothes dryer host, and / or trigger the controller to send the function mode switching trigger signal to the clothes dryer host;

[0079] The current status of the clothes dryer indicated by the LED unit includes one or more of the following: the clothes dryer is on, off, and currently in a functional mode.

[0080] The number of each type of switch unit can be one or more. When there are multiple first switch units, there are also multiple first IO ports. Each first switch unit is connected to one IO port of the controller. Similarly, the second switch unit and the function switch unit are connected.

[0081] In this embodiment, as Figure 2 As shown, there is one first switch unit and one second switch unit, and each of the first and second switch units includes one switch, namely K1 and K5 respectively. In this embodiment, as... Figure 2 As shown, the number of functional units can be five, including a first functional switch unit K6, a second functional switch unit K4, a third functional switch unit K3, a fourth functional switch unit K2, and a fifth functional switch unit K7. The third IO port of the controller includes one or more of port a, port b, port c, port d, and IO port e.

[0082] The first function switch unit K6 is connected to the controller's IO port a (e.g., Figure 2 The KEY6 port shown is used to trigger the controller to send a signal to turn the clothes drying rack light on or off to the clothes drying rack host, and / or to trigger the controller to send a signal to switch the lighting mode to the clothes drying rack host;

[0083] The second function switch unit K4 is connected to the controller's IO port b (e.g., Figure 2 The KEY4 port shown is used to trigger the controller to send a disinfection on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a disinfection mode switching trigger signal to the clothes drying machine host;

[0084] The third function switch unit K3 is connected to the controller's IO port c (e.g., Figure 2The KEY3 port shown is used to trigger the controller to send a drying on or off trigger signal to the clothes drying machine host, and / or to trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host;

[0085] The fourth function switch unit K2 is connected to the controller's IO port d (e.g., Figure 2 The KEY2 port shown is used to trigger the controller to send a drying mode on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host;

[0086] The fifth functional switch unit K7 is connected to the controller's IO port e (e.g., Figure 2 The KEY7 port shown is used to trigger the controller to send a signal to the clothes dryer host to turn the clothes dryer on or off.

[0087] In this embodiment, as Figure 2 As shown, each of the first to fifth function switch units includes a switch, and the other ends of each switch are interconnected and then connected to the power supply through resistor R4. The number of these function switch units is not limited to five; it can be reduced or increased depending on the number of functions the clothes dryer needs to control.

[0088] In this embodiment, the LED unit types include one or more of the following: first LED unit, second LED unit, third LED unit, and fourth LED unit; the number of each type of LED unit is one or more; wherein:

[0089] The controller is connected to the control unit of the group containing the first LED unit and is used to control the first LED unit to turn on or off when the first function switch unit is pressed, so as to indicate whether the clothes drying rack lighting function is on or off, or to indicate whether the corresponding mode lighting function is on or off.

[0090] In this embodiment, when there is only one lighting mode for the clothes drying rack, only one first LED unit can be set up. This first LED unit may include one LED, such as... Figure 2 As shown, when the first function switch unit K6 is pressed, LED5 turns on or off to indicate whether the lighting function is turned on or off.

[0091] In this embodiment, when the clothes drying rack has multiple lighting modes, multiple first LED units can be set. Specifically, the number of first LED units is the same as the number of lighting modes. For example, when the clothes drying rack's lighting modes include night lighting mode, leisure mode, drying mode, gardening mode, standard lighting mode, and reading mode, the brightness and color temperature of the clothes drying rack's lights differ under different lighting modes. There are six first LED units, each containing one LED, as shown below. Figure 2As shown, LEDs 1 to 6 are switched so that each time the first function switch unit K6 is pressed, the brighter LEDs 1 to 6 are switched to indicate that the corresponding lighting mode is turned on. For example, when LED 1 is bright, it indicates that the night lighting mode is turned on. When K6 is pressed again, LED 2 can be turned on to indicate that the leisure mode is turned on, and so on. The clothes drying rack lighting mode is switched by K6, and the current lighting mode is indicated by LEDs 1 to 6.

[0092] The controller is connected to the control unit of the second LED unit KEY4 and is used to control the second LED unit to turn on or off when the second function switch unit is pressed, so as to indicate whether the clothes drying rack disinfection function is on or off, or to indicate whether the disinfection function of the corresponding mode is on or off.

[0093] In this embodiment, it may include only one second LED unit, which includes one LED, such as... Figure 2 As shown, LED4 illuminates when the second function switch unit K4 is pressed, indicating that the clothes dryer's sterilization function is activated. Alternatively, multiple second LED units can be set to indicate different sterilization modes. Each second LED unit includes at least one LED, and sterilization modes can include ultraviolet sterilization, ion sterilization, etc. Pressing K4 switches the clothes dryer's sterilization mode, simultaneously triggering different second LED units to illuminate and indicate the corresponding sterilization mode.

[0094] The controller is connected to the control unit of the group containing the third LED unit and is used to control the third LED unit to turn on when the third function switch unit is pressed, so as to indicate whether the clothes drying function of the clothes dryer is turned on or off, or to indicate whether the drying function of the corresponding mode is turned on or off.

[0095] In this embodiment, when there is only one drying mode, only one third LED unit can be set, and each third LED unit includes one LED, such as... Figure 2 As shown in the diagram, when the third function switch unit K3 is pressed, LED5 lights up to indicate that the drying function is turned on.

[0096] In this embodiment, when the clothes dryer has multiple drying modes, multiple third LED units can be set. Specifically, the number of third LED units is the same as the number of drying modes. For example, when the clothes dryer's drying modes include a baby drying mode, a quick drying mode, a standard drying mode, and a silent drying mode, the drying temperature, time, and wind speed differ under different drying modes. Therefore, there are four third LED units, each containing one LED, as shown below. Figure 2The LEDs 2, 3, 5, and 6 shown in the diagram switch up and down each time the third function switch unit K3 is pressed, indicating that the corresponding drying function is turned on. For example, when LED 2 turns on, it indicates that the baby drying mode is turned on. When K3 is pressed again, LED 3 can be turned on to indicate that the block drying mode is turned on, and so on. The drying mode of the clothes dryer is switched by K3, and the currently switched drying mode is indicated by the LEDs.

[0097] In this embodiment, the controller is connected to the control unit of the group containing the fourth LED unit, and is used to control the fourth LED unit to turn on when the fourth function switch unit is pressed, so as to indicate whether the clothes drying function is on or off, or to indicate whether the drying function of the corresponding mode is on or off. This embodiment includes a fourth LED unit, which includes one LED, such as... Figure 2 As shown, LED1 illuminates when the fourth function switch unit K2 is pressed, indicating that the clothes drying function of the clothes dryer is turned on, allowing clothes to be dried naturally. Alternatively, multiple fourth LED units can be set to indicate different drying modes, such as different power levels, reflected in different airflow speeds from the clothes dryer's fan. Based on K5, different drying modes of the clothes dryer can be switched, simultaneously driving the LEDs in different fourth LED units to turn on, thus indicating the corresponding drying mode.

[0098] In this embodiment, a fifth LED unit, such as LED7, can also be provided to indicate whether the clothes drying machine is turned on or off. When the fifth function switch unit K7 is pressed, LED7 turns on or off to indicate whether the clothes drying machine is turned on or off.

[0099] In this embodiment, one or more of the various types of LED units (first LED unit to fifth LED unit) can share one or more LEDs, for example, such as Figure 2 As shown, LED2, LED3, LED5, and LED6, which are used as first LED units to identify the lighting mode, also serve as third LED units to identify four different drying modes. LED4, which is used as a first LED unit to identify the lighting mode, can also serve as a second LED unit to identify the disinfection function status. LED1, which is used as a first LED unit to identify the lighting mode, can also serve as a fourth LED unit to identify the air-drying function status. The specific settings can be configured according to actual needs. The shared operation of the above LEDs can further reduce the number of controller I / O ports used.

[0100] In this embodiment, corresponding text and / or images can be set at each LED unit position of the remote control device to indicate that the clothes dryer is turned on; the word "natural wind" is set at the position of LED1, which is the fourth LED unit, along with the natural air drying time. "Baby drying, quick drying, standard drying, and silent drying" are set at the positions of LED2, LED3, LED5, and LED6, which are the third LED units, respectively, and the corresponding drying time is marked; "disinfection" or "sterilization" is set at the position of LED4, which is the second LED unit, and the corresponding sterilization time is marked.

[0101] In this embodiment, the controller in the clothes drying rack remote control multiplexing circuit is connected to the clothes drying rack host via a Bluetooth communication module, and communicates with the main controller in the clothes drying rack host. The controller communicates with the clothes drying rack host via the Bluetooth communication module to send the generated trigger signal to the clothes drying rack host, so that the clothes drying rack host controls the corresponding functional module of the clothes drying rack to perform corresponding operations based on the received trigger signal. In this embodiment, the Bluetooth communication module can be a 2.4GHz Bluetooth communication module, which can achieve advantages such as low power consumption, low frame drop rate, and high penetration, and can greatly improve the user experience.

[0102] In summary, the clothes drying rack remote control device of this embodiment can trigger the clothes drying rack to perform corresponding operations through the switch unit, and can indicate the current status of the clothes drying rack through the LED unit. By using the multiplexing circuit described in Embodiment 1, the number of I / O ports used by the controller (such as a microcontroller) in the clothes drying rack remote control device can be effectively reduced. Therefore, when the functions of the clothes drying rack are the same, a controller with fewer I / O ports can be used, saving the manufacturing cost of the remote control. When using a controller (such as a microcontroller) with the same number of I / O ports, the use of the multiplexing circuit in this embodiment can realize the control of more functions of the clothes drying rack, improving the user experience of the clothes drying rack.

[0103] Example 3

[0104] This embodiment discloses a working method of the clothes drying rack remote control device described in Embodiment 2, such as... Figure 3 As shown, it specifically includes:

[0105] S1. The controller controls the switch to be in the off state, and the IO ports connected to each group of control components are used as input terminals.

[0106] In this embodiment, the anode of the LED in each LED unit is connected to the power supply through the switching transistor MOS1. When the controller controls the switching transistor MOS1 to be turned off, the line where each LED unit is located is disconnected from the power supply. Therefore, the state of the switching unit connected to the LED unit does not affect the state of the LED in the LED unit. Instead, the IO port connected to each group of control components (the IO port connected to the connection end of the LED unit and the switching unit in each group of control components) is used as the input terminal.

[0107] S2. The controller polls each of the above input terminals, determines the pressed state of the switch unit in the corresponding connected control device based on the level signal received by each input terminal, and sends the corresponding trigger signal to the clothes drying machine host according to the pressed state of the switch unit.

[0108] In this embodiment, when the I / O ports connected to the controller and each group of control components are used as input terminals, it is possible to detect whether the switch unit is pressed, such as... Figure 2 As shown, when the other end of the switch unit is connected to a power source, if the switch unit is pressed, the corresponding IO port of the controller receives a high-level signal; otherwise, the switch unit receives a low-level signal.

[0109] In this embodiment, the controller sends corresponding trigger signals to the clothes drying rack host according to the pressed state of each switch unit. For example, when the first switch unit described in Embodiment 1 is pressed, the controller's first IO port receives a high-level signal during the polling step. At this time, the controller sends a clothes drying rack descent trigger signal to the clothes drying rack host. After receiving the descent trigger signal, the clothes drying rack host controller controls the drying rod to descend. When the second switch unit is pressed, the controller's second IO port receives a high-level signal during the polling step. At this time, the controller sends a clothes drying rack ascend trigger signal to the clothes drying rack host. After receiving the ascend trigger signal, the clothes drying rack host controller controls the drying rod to ascend. When one of the function switch units is pressed, one of the IO ports a to e in the corresponding controller's third IO port will receive a high-level signal. The controller sends a clothes drying rack corresponding function start / stop trigger signal to the clothes drying rack host, or sends a function mode switching trigger signal to the clothes drying rack host, so that the corresponding function of the clothes drying rack host is turned on, off, or the function mode is switched.

[0110] S3. After the controller polls all the above input terminals, the control switch is turned on, and the IO ports connected to each group of control components are used as output terminals.

[0111] In this embodiment, when the controller controls the switching transistor MOS1 to conduct, the lines where each LED unit is located are connected to the power supply, and the controller uses the IO ports connected to each group of control components (the IO ports connected to each LED unit) as output terminals.

[0112] S4. The controller polls each of the above output terminals and outputs a preset level signal to the corresponding IO port according to the pressed state of the switch unit, so as to control the state of the corresponding LED unit.

[0113] In this embodiment, when the I / O ports connected to the controller and each group of control components are used as output terminals, the state of the LED unit can be controlled based on the level signal output by the output terminal. In this embodiment, the anode of each LED unit is connected to the power supply through the switching transistor MOS1. Therefore, when the controller outputs a low level at the corresponding I / O port, the corresponding LED unit brightens, and when it outputs a high level, the corresponding LED unit turns off.

[0114] In this embodiment, when the system starts up, the controller polls each IO port. Alternatively, it can first use the IO ports connected to each control component as input ports, poll once, and then use them as output ports for polling. The actual polling order is not limited.

[0115] In this embodiment, when the controller polls each IO port used as an input, if it determines that the first function switch unit is pressed based on the level signal received at IO port a, then when the controller polls each IO port used as an output in the next round, it sends a corresponding level signal to the IO port connected to the first LED unit to control the state of the first LED unit, indicating the lighting function state (on or off) or the current lighting mode; that is, when there is one first LED unit and the first LED unit is lit, it indicates that the current lighting function of the clothes dryer is on, and when the first LED unit is off, it indicates that the current lighting function of the clothes dryer is off; or, when there are multiple first LED units, when one of the first LED units is lit, it indicates that the current corresponding lighting mode of the clothes dryer is on, for example, when... Figure 2 When LED4 in the middle lights up, it indicates that the clothes drying rack is currently in garden lighting mode.

[0116] In this embodiment, when the controller polls each IO port used as an input, if it determines that the second function switch unit is pressed based on the level signal received at IO port b, then when the controller polls each IO port used as an output in the next round, it sends a corresponding level signal to the IO port connected to the second LED unit to control the state of the second LED unit and indicate the disinfection function status (on or off) or the current disinfection mode. For example, when including one second LED unit, such as... Figure 2 As shown in the diagram, when LED4 is lit, it indicates that the clothes drying rack's disinfection function is currently on; when LED4 is dimmed, it indicates that the clothes drying rack's disinfection function is currently off.

[0117] When the controller polls each I / O port used as an input, if it determines that the third function switch unit is pressed based on the level signal received at I / O port c, then in the next round of polling each I / O port used as an output, the controller sends a corresponding level signal to the I / O port connected to the third LED unit to control the state of the third LED unit, indicating the drying function status (on or off) or the current drying mode; that is, when there is one third LED unit and it is lit, it indicates that the drying function of the clothes dryer is currently on; when the third LED unit is off, it indicates that the drying function of the clothes dryer is currently off; or, when there are multiple third LED units, when one of the third LED units is lit, it indicates that the corresponding drying mode of the clothes dryer is currently on, for example, when... Figure 2 When LED6 lights up, it indicates that the clothes dryer is currently in silent drying mode.

[0118] When the controller polls each IO port that is used as an input, if it determines that the fourth function switch unit is pressed based on the level signal received by IO port d, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the fourth LED unit to control the state of the fourth LED unit and indicate the drying function state (on or off) or the current drying mode.

[0119] In this embodiment, for each function switch unit, if the function switch unit (e.g., the fourth function switch unit K2) only includes on and off, then after the system starts, when the function switch unit is pressed for the first time, the corresponding function (e.g., the disinfection function) is turned on. During the polling before the function switch unit (K2) is pressed again, the IO port connected to the corresponding LED unit (e.g., LED1) as the output terminal outputs a first level signal (e.g., a low level signal) to make the LED unit in the on state. When the function switch unit is pressed again, the corresponding function of the clothes dryer is turned off. When the IO port connected to the corresponding LED unit (e.g., LED1) as the output terminal is polled, a second level signal (e.g., a high level signal) is output to make the corresponding LED unit (e.g., LED1) turn off. If the function switch unit includes on, off, and mode switching functions, then after the system starts, when the function switch unit (e.g., the third function switch unit K3) is pressed for the first time, the first function mode (e.g., standard drying) is turned on, and the corresponding LED unit (e.g., LED5) lights up to indicate that the corresponding function mode is turned on. Each time the function switch unit (e.g., K3) is pressed subsequently, the function mode is switched, for example, to the second function mode (baby drying mode), and the corresponding LED unit (e.g., LED2) lights up (LED5 turns off), and so on. If the current function mode is the last function mode (e.g., silent drying mode), then when the function switch unit (e.g., K3) is pressed again, that function of the clothes dryer (e.g., drying function) will be turned off. That is, in this embodiment, based on the function switch unit, the corresponding function can be turned on, and the function can be switched from the first function mode to the last function mode until the corresponding function is turned off, and so on in a cycle.

[0120] In this embodiment, each LED unit can also be controlled as follows: after the corresponding function or function mode of the clothes drying rack is turned on, the LED unit used to indicate that the function or function mode is turned on will turn off after a preset time (e.g., 5 seconds) or when the remote control device enters sleep mode, and will turn on again when the remote control device is woken up. This operation can effectively reduce the power consumption of the remote control device.

[0121] In summary, in the working method of the clothes drying rack remote control device in this embodiment, the controller's IO ports are sequentially used as input and output terminals for polling. Combined with the control of the switching transistors, the status of the switching unit can be detected through the same IO port, while the status of the LED unit can also be controlled. This method enables the remote control device to trigger the clothes drying rack to perform more functions and to identify more functions of the clothes drying rack, greatly improving the intelligence level of the clothes drying rack and other devices.

[0122] The above description is only an optional implementation method for some implementation scenarios of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A multiplexing circuit, characterized in that, It includes a controller, a switching transistor, and one or more sets of control components; each set of control components includes a switching unit and an LED unit; One end of the switching unit is connected to one end of the LED unit, and the other end of the switching unit is connected to the power supply or ground; the other end of the LED unit is connected to the power supply or ground through a switching transistor. Each control unit is connected to the controller's I / O port via the connection terminals of the switch unit and the LED unit; The control terminal of the switching transistor is connected to the controller, and the controller controls the state of the switching transistor to control the LED unit to connect to the power supply or ground.

2. The multiplexing circuit according to claim 1, characterized in that, The switching transistor is a bipolar transistor or a MOSFET; When the switching transistor is a bipolar transistor, the first, second, and third terminals of the switching transistor correspond to the base, emitter, and collector, respectively. When the switching transistor is a MOSFET, the first, second, and third terminals of the switching transistor correspond to the gate, source, and drain, respectively. In each group of control components, the other end of the LED unit is connected to the second or third terminal of the switching transistor, and the third or second terminal of the switching transistor is connected to the power supply or ground. The first terminal of the switching transistor is connected to another IO port of the controller as the control terminal.

3. The multiplexing circuit according to claim 1, characterized in that, The LED units can be of one or more types, and the number of each type of LED unit can be one or more; different types of LED units can share one or more LEDs.

4. A clothes drying rack remote control device, characterized in that, Includes the multiplexing circuit according to any one of claims 1 to 3; In each group of control components, the switch unit is connected to the I / O port of the controller and is used to trigger the controller to send a corresponding trigger signal to the clothes drying machine host, so that the clothes drying machine performs the corresponding operation; In each group of control components, the LED unit is connected to the I / O port of the controller. The controller controls the state of the LED unit according to the state of the corresponding switch unit to indicate the current state of the clothes drying rack.

5. The clothes drying rack remote control device according to claim 4, characterized in that, In the multiplexing circuit, the types of switching units include one or more of the following: first switching unit, second switching unit, and functional switching unit; the number of each type of switching unit is one or more. The first switch unit is connected to the first IO port of the controller and is used to trigger the controller to send a clothes drying rack descent trigger signal to the clothes drying rack host; The second switch unit is connected to the second IO port of the controller and is used to trigger the controller to send a clothes drying rack raising trigger signal to the clothes drying rack main unit; The function switch unit is connected to the third IO port of the controller and is used to trigger the controller to send the corresponding function start / stop trigger signal of the clothes dryer to the clothes dryer host, and / or trigger the controller to send the function mode switching trigger signal to the clothes dryer host; The current status of the clothes dryer indicated by the LED unit includes one or more of the following: the clothes dryer is on, off, and currently in a functional mode.

6. The clothes drying rack remote control device according to claim 5, characterized in that, The function switch unit includes one or more of a first function switch unit, a second function switch unit, a third function switch unit, a fourth function switch unit, and a fifth function switch unit, and the third IO port corresponding to the controller includes one or more of port a, port b, port c, port d, and IO port e; The first function switch unit is connected to the controller's IO port a, and is used to trigger the controller to send a trigger signal to turn the clothes drying rack lighting on or off to the clothes drying rack host, and / or trigger the controller to send a lighting mode switching trigger signal to the clothes drying rack host; The second function switch unit is connected to the controller's IO port b, and is used to trigger the controller to send a disinfection on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a disinfection mode switching trigger signal to the clothes drying machine host; The third function switch unit is connected to the controller's IO port c, and is used to trigger the controller to send a drying on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host; The fourth function switch unit is connected to the controller's IO port d and is used to trigger the controller to send a drying mode on or off trigger signal to the clothes drying machine host, and / or trigger the controller to send a drying mode switching trigger signal to the clothes drying machine host; The fifth function switch unit is connected to the controller's IO port e and is used to trigger the controller to send a clothes drying rack on or off trigger signal to the clothes drying rack host.

7. The clothes drying rack remote control device according to claim 6, characterized in that, The LED unit types include one or more of the following: first LED unit, second LED unit, third LED unit, and fourth LED unit; the number of each type of LED unit is one or more. The controller is connected to the control unit of the group where the first LED unit is located, and is used to control the state of the first LED unit according to the state of the first function switch unit, so as to indicate the lighting function state of the clothes drying rack, or the current lighting mode. The controller is connected to the control unit of the group where the second LED unit is located, and is used to control the state of the second LED unit according to the state of the second function switch unit, so as to indicate the state of the clothes drying rack's disinfection function, or the current disinfection mode. The controller is connected to the control unit of the group where the third LED unit is located, and is used to control the state of the third LED unit according to the state of the third function switch unit, so as to indicate the drying function state of the clothes dryer, or the current drying mode. The controller is connected to the control unit of the group containing the fourth LED unit and is used to control the state of the fourth LED unit according to the state of the fourth function switch unit, so as to indicate the drying function state of the clothes dryer or the current drying mode.

8. The clothes drying rack remote control device according to any one of claims 4 to 7, characterized in that, It also includes a Bluetooth communication module connected to the controller, which communicates with the clothes drying machine host through the Bluetooth communication module to send corresponding trigger signals to the clothes drying machine host.

9. A method of operating the remote control device for a clothes drying rack according to any one of claims 1 to 8, characterized in that, include: The controller controls the switching transistor to be in the off state, and the IO ports connected to each group of control components are used as input terminals; The controller polls each of the above input terminals, determines the pressed state of the switch unit in the corresponding connected control device based on the level signal received at each input terminal, and sends a corresponding trigger signal to the clothes drying machine host based on the pressed state of the switch unit. The control switch is in the ON state, and the IO ports connected to each group of control components are used as output terminals; The controller polls each of the above output terminals and outputs a preset level signal to the corresponding IO port according to the pressed state of the switch unit, so as to control the state of the corresponding LED unit.

10. The operating method of the clothes drying rack remote control device according to claim 9, characterized in that, When the controller polls each IO port that is used as an input, if it determines that the first function switch unit is pressed based on the level signal received by IO port a, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the first LED unit to control the state of the first LED unit and indicate the lighting function state or the current lighting mode. When the controller polls each IO port that is used as an input terminal, if it determines that the second function switch unit is pressed based on the level signal received by IO port b, then when the controller polls each IO port that is used as an output terminal in the next round, it sends the corresponding level signal to the IO port connected to the second LED unit to control the state of the second LED unit and indicate the disinfection function state or the current disinfection mode. When the controller polls each IO port that is used as an input, if it determines that the third function switch unit is pressed based on the level signal received by IO port c, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the third LED unit to control the state of the third LED unit and indicate the drying function state or the current drying mode. When the controller polls each IO port that is used as an input, if it determines that the fourth function switch unit is pressed based on the level signal received by IO port d, then when the controller polls each IO port that is used as an output in the next round, it sends the corresponding level signal to the IO port connected to the fourth LED unit to control the state of the fourth LED unit and indicate the drying function state or the current drying mode.

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