Folding treadmill based on time-sharing power supply communication

Abstract

The invention discloses a folding treadmill based on time-sharing power supply communication. The folding treadmill comprises a rack, a first supporting column, a second supporting column and a cross beam part. A control panel, a motor and a power supply module are arranged in the rack; a display screen and a display circuit are arranged on the cross beam part; the first support column and the second support column are metal conductive columns; one ends of the first supporting column and the second supporting column are electrically connected with the control panel, and the other ends are electrically connected with the display circuit; the control panel periodically provides power supply and communication for the display circuit in a time-sharing manner through the first supporting column and the second supporting column; in a power supply period, the power supply module supplies power to the display circuit, and in a communication period, the control panel and the display circuit realize transmit-receive communication. Through the first supporting column and the second supporting column which are made of metal conductive materials and periodical switching of power supply and communication, the complexity of a power line and a communication line is reduced, the fault risk caused by line abrasion of the folding treadmill is reduced, and the folding treadmill has good practicability.

Description

Technical Field

[0001] The present invention belongs to the technical field of fitness equipment manufacturing, in particular to the field of treadmill manufacturing, and specifically relates to a foldable treadmill based on time-sharing power supply communication. Background Art

[0002] Currently, treadmills are relatively large, limiting their applicability. When not in use, they take up a lot of space and are inconvenient to store and transport. In the face of limited indoor living space, many exercise enthusiasts shy away from using a treadmill. Consequently, a number of foldable treadmills have emerged on the market.

[0003] Common folding treadmills typically consist of a frame and support columns pivotally mounted on either side of the frame. Crossbars are located at the upper ends of the columns, housing a motor and control circuit board. A control display screen is located within the crossbars. Power and communication cables for the control display screen are routed through the support columns and connected to the control circuit board within the frame. Due to the presence of these cables, existing folding treadmills are prone to control failure after a limited number of folding attempts, significantly reducing their lifespan. Summary of the Invention

[0004] A brief overview of embodiments of the present invention is provided below to provide a basic understanding of certain aspects of the present invention. It should be understood that the following overview is not an exhaustive overview of the present invention. It is not intended to identify key or important aspects of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is simply to present certain concepts in a simplified form as a prelude to the more detailed description discussed later.

[0005] To solve the above technical problems, the present application provides a foldable treadmill based on time-sharing power supply communication, which includes:

[0006] A frame, a first support column, a second support column, and a crossbeam, wherein the first support column and the second support column are rotatably arranged on the left and right sides of the frame, respectively, and are configured to be rotatable relative to the frame between a use position and a storage position; the crossbeam is fixedly arranged at the upper ends of the first support column and the second support column;

[0007] The frame is provided with a control panel, a motor and a power supply module electrically connected to each other;

[0008] A display screen is provided on the crossbeam portion, and a display circuit electrically connected to the display screen is provided inside the crossbeam portion;

[0009] The first support column and the second support column are conductive columns made of metal conductive material; one end of the first support column and the second support column are electrically connected to the control board through a wire, and the other end of the first support column and the second support column are electrically connected to the display circuit through a wire; the control board provides power supply and communication for the display circuit periodically through the first support column and the second support column; specifically, each cycle is divided into a power cycle and a communication cycle. In the power cycle, the power module provides power to the display circuit, and in the communication cycle, the control board and the display circuit realize sending and receiving communication.

[0010] Furthermore, the control board includes a microcontroller and a first time-sharing power supply communication circuit, and the display circuit includes a driving chip and a second time-sharing power supply communication circuit corresponding to the first time-sharing power supply communication circuit; the first time-sharing power supply communication circuit and the second time-sharing power supply communication circuit realize power supply and data communication through the first support column and the second support column.

[0011] Furthermore, the first time-sharing power supply communication circuit includes a first protection unit, a first voltage clamping unit, and a first selection switch; the second time-sharing power supply communication circuit includes a second protection unit, a filtering energy storage unit, an ADC detection unit, a second voltage clamping unit, and a second selection switch; the positive electrode of the power supply module is connected in series with the first protection unit, and then connected to the first end of the first support column, the first end of the first voltage clamping unit, and the control end of the microcontroller; the second end of the first support column is connected to the first end of the ADC detection unit and the first end of the second voltage clamping unit on one hand, and is connected in series with the second protection unit and the filtering energy storage unit on the other hand, and then connected to the positive power supply end of the display circuit; the SELECT signal port, the transmit TX port, and the receive RX port of the microcontroller are respectively connected to the three input ports of the selection switch, and the output port of the first selection switch is connected to the second end of the first voltage clamping unit; the negative electrode of the power supply module is connected to the first end of the second support column, and the second end of the second support column is connected to the negative power supply end of the display circuit; the second end of the ADC detection unit is connected to the ADC port of the driver chip, the second end of the second voltage clamping unit is connected to the output end of the second selection switch, and the three input ends of the second selection switch are respectively connected to the SELECT signal port, the transmit TX port, and the receive RX port of the driver chip.

[0012] The first and second voltage clamping units are used to limit the voltage to a safe range to prevent excessive voltage from damaging the equipment. The first and second protection units are used to prevent reverse current flow and are implemented using diodes. The filtering and energy storage units filter and store energy in the power supply through components such as capacitors and inductors to ensure power supply stability. The ADC detection unit is implemented using an analog-to-digital converter and is used to convert analog signals into digital signals for processing by the microprocessor. The first and second selection switches are used to control the periodic switching of power supply and communication according to the SELECT signal of the microcontroller. The microcontroller sends and receives data through the TX port and the RX port.

[0013] The operating principle is as follows: During the power cycle, the microprocessor controls the strobe switch via the SELECT signal to close, allowing power to be supplied to the display circuit via the first and second support legs. During this period, the display circuit's MCU does not communicate data. During the communication cycle, the microprocessor controls the SELECT signal to open the strobe switch, stopping power supply to the display circuit. During this period, the microprocessor transmits data via the TX port, and the display circuit's driver chip receives data via the RX port. Data is transmitted via the first and second support legs. Periodic switching: The microprocessor controls the SELECT signal to periodically switch between the power cycle and the communication cycle, achieving time-sharing of power supply and communication.

[0014] According to the treadmill implemented according to the above solution, the first time-sharing power supply communication circuit and the second time-sharing power supply communication circuit will be subject to electromagnetic interference from the motor during actual operation. Therefore, in order to reduce interference, as a preferred solution, an optocoupler isolation circuit is also provided between the control board and the motor.

[0015] In addition, the first support column and the second support column replace the existing wires. In actual operation, the treadmill may generate static electricity during use. Therefore, in order to effectively deal with this problem, as a preferred solution, the connection point between the first support column and the positive pole of the power module and the connection point between the second support column and the positive power supply end of the display circuit are respectively connected to TVS (transient voltage suppressor) for grounding, thereby improving the safety and reliability of the circuit and preventing the impact of static electricity on the human body.

[0016] As a further solution, the foldable treadmill further includes a limiting mechanism, and the first support column and the second support column are fixed in the use position or the storage position by the limiting mechanism.

[0017] As a further solution, the foldable treadmill further includes a running belt, which is arranged on the frame and rotates under the action of a motor.

[0018] As a further solution, for the convenience of users, a mobile phone holder is also provided on the crossbeam of the foldable treadmill.

[0019] The present application implements a time-sharing power supply and communication circuit through the above scheme. This circuit provides power to the display circuit and realizes data communication in the power cycle and communication cycle respectively through periodic switching, and replaces the existing wires with the first support column and the second support column, which has the advantages of reducing wear and tear, improving reliability and simplifying the design. First, through periodic time-sharing power supply and communication, the wear of the power cord and communication line is reduced, and the service life of the equipment is extended. Secondly, time-sharing power supply and communication reduces the possibility of power supply and communication conflicts and improves the reliability of the system. Thirdly, by sharing conductive metal for power supply and data transmission, the circuit design is simplified, thereby making the treadmill more miniaturized and more portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention may be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to represent the same or similar components. The accompanying drawings, together with the following detailed description, are incorporated in and form a part of this specification and are used to further illustrate preferred embodiments of the present invention and to explain the principles and advantages of the present invention. In the drawings:

[0021] Figure 1a Schematic diagram of the structure of the treadmill of this embodiment;

[0022] Figure 1b Schematic diagram of an explosion of the treadmill of this embodiment;

[0023] Figure 2 Schematic diagram of the time-sharing power supply and communication circuit for this application;

[0024] Figure 3 A schematic diagram of a specific implementation circuit of a time-sharing power supply and communication circuit according to an embodiment of the present application;

[0025] Figure 4 A partial circuit schematic diagram of a control board (microcontroller) according to an embodiment of the present application;

[0026] Figure 5 This is a partial circuit schematic diagram of the control board of an embodiment of the present application (first time-sharing power supply communication circuit);

[0027] Figure 6 This is a partial circuit schematic diagram of the control board (optocoupler isolation communication circuit) of an embodiment of the present application;

[0028] Figure 7 This is a partial circuit schematic diagram of the control board (NTC detection circuit and fan drive circuit) of an embodiment of the present application;

[0029] Figure 8A partial circuit schematic diagram (AC-DC conversion circuit) of a control board according to an embodiment of the present application;

[0030] Figure 9 This is a partial circuit schematic diagram of the control board (LDO voltage conversion circuit) of an embodiment of the present application;

[0031] Figure 10 This is a partial circuit schematic diagram (motor drive circuit) of the control board of an embodiment of the present application;

[0032] Figure 11 A partial circuit schematic diagram (driver chip) of a display circuit according to an embodiment of the present application;

[0033] Figure 12 A partial circuit schematic diagram of a display circuit according to an embodiment of the present application (a second time-sharing power supply communication circuit);

[0034] Figure 13 A partial circuit schematic diagram (Bluetooth circuit) of a display circuit according to an embodiment of the present application;

[0035] Figure 14 This is a partial circuit schematic diagram of the display circuit (buzzer drive circuit and safety lock detection circuit) of an embodiment of the present application;

[0036] Figure 15 A partial circuit schematic diagram (key input circuit) of a display circuit according to an embodiment of the present application;

[0037] Figure 16 This is a partial circuit schematic diagram of the display circuit (digital tube drive circuit) of an embodiment of the present application;

[0038] Figure 17 This is a partial circuit schematic diagram of the display circuit (DC-DC 12V to 5V circuit) according to an embodiment of the present application. DETAILED DESCRIPTION

[0039] Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that for the sake of clarity, the drawings and descriptions omit the representation and description of components and processes that are not relevant to the present invention and are known to those of ordinary skill in the art.

[0040] See also Figure 1a and Figure 1bAn embodiment of the present application provides a folding treadmill based on time-sharing power supply communication, which includes: a frame 10, a first support column 21, a second support column 22 and a crossbeam 30. The first support column 21 and the second support column 22 are rotatably arranged on the left and right sides of the frame 10, and are constructed to be able to rotate between a use position and a storage position relative to the frame 10; the crossbeam 30 is fixedly arranged at the upper ends of the first support column 21 and the second support column 22.

[0041] The rack 10 is provided with a control board, a motor and a power supply module which are electrically connected to each other;

[0042] A display screen is provided in the middle of the crossbeam 30, and a display circuit electrically connected to the display screen is provided within the crossbeam 30. The display screen can be located anywhere in the middle of the crossbeam, without limitation. For user convenience, a mobile phone holder 40 (or PAD holder) is also provided on the crossbeam.

[0043] In addition, the foldable treadmill further includes a limiting mechanism, by which the first support column 21 and the second support column 22 are fixed in the use position or the storage position. The foldable treadmill further includes a running belt, which is arranged on the frame 10 and is configured to rotate under the drive of the motor.

[0044] In actual design, the parts of the components that are not conductive and connected to the metal parts are insulated. For example, the first support column 21 is fixed with bolts and connected to the limiting mechanism, and the limiting mechanism is connected to the frame through metal screws, and the metal screws are covered with insulating rubber.

[0045] The first support column 21 and the second support column 22 are conductive columns made of metal conductive material; one end of the first support column 21 and the second support column 22 are electrically connected to the control board through wires, and the other end of the first support column 21 and the second support column 22 are electrically connected to the display circuit through wires; the control board provides power supply and communication for the display circuit periodically through the first support column 21 and the second support column 22; specifically, each cycle is divided into a power cycle and a communication cycle. During the power cycle, the power module provides power to the display circuit, and during the communication cycle, the control board and the display circuit realize sending and receiving communication.

[0046] See also Figure 2 The control board includes a microcontroller and a first time-sharing power supply communication circuit, the display circuit includes a driver chip and a second time-sharing power supply communication circuit corresponding to the first time-sharing power supply communication circuit; the first time-sharing power supply communication circuit and the second time-sharing power supply communication circuit realize power supply and data communication through the first support column 21 and the second support column 22.

[0047] Specifically, the first time-sharing power supply communication circuit includes a first protection unit, a first voltage clamping unit and a first selection switch; the second time-sharing power supply communication circuit includes a second protection unit, a filtering energy storage unit, an ADC detection unit, a second voltage clamping unit and a second selection switch; the positive pole of the power supply module is connected in series with the first protection unit and then connected to the first end of the first support column 21, the first end of the first voltage clamping unit and the control end of the microcontroller; the second end of the first support column 21 is connected to the first end of the ADC detection unit and the first end of the second voltage clamping unit on the one hand, and is connected in series with the second protection unit and the filtering energy storage unit on the other hand, and then connected to the positive pole of the display circuit. The power supply end; the SELECT signal port, the transmit TX port and the receive RX port of the microcontroller are respectively connected to the three input ports of the selection switch, and the output port of the first selection switch is connected to the second end of the first voltage clamping unit; the negative pole of the power supply module is connected to the first end of the second support column 22, and the second end of the second support column 22 is connected to the negative power supply end of the display circuit; the second end of the ADC detection unit is connected to the ADC port of the driver chip, the second end of the second voltage clamping unit is connected to the output end of the second selection switch, and the three input ends of the second selection switch are respectively connected to the SELECT signal port, the transmit TX port and the receive RX port of the driver chip.

[0048] The first and second voltage clamping units are used to limit the voltage to a safe range, preventing excessive voltage from damaging the device. The first and second protection units are used to prevent reverse current flow and are implemented using diodes. The filter and energy storage unit filters and stores energy using components such as capacitors and inductors to ensure power stability. The ADC detection unit, implemented using an analog-to-digital converter, converts analog signals into digital signals for processing by the microprocessor. The first and second selection switches control the periodic switching of power and communication based on the microcontroller's SELECT signal. The microcontroller sends and receives data via its TX and RX ports.

[0049] The operating principle is as follows: During the power cycle, the microprocessor controls the strobe switch to close via the SELECT signal, and power is supplied to the display circuit via the first support column 21 and the second support column 22. During this period, the display circuit's MCU does not perform data communication. During the communication period, the microprocessor controls the strobe switch to open via the SELECT signal, stopping power supply to the display circuit. At this time, the microprocessor sends data via the TX port, and the display circuit's driver chip receives data via the RX port. Data is transmitted via the first support column 21 and the second support column 22. Periodic switching: The microprocessor controls the SELECT signal to periodically switch between the power cycle and the communication cycle, achieving time-sharing power supply and communication.

[0050] This application replaces existing electrical wires with first and second support columns 21 and 22, offering advantages such as reduced wear, improved reliability, and a simplified design. First, by periodically time-sharing power and communication, wear on the power and communication lines is reduced, extending the life of the device. Second, time-sharing power and communication reduces the possibility of power and communication conflicts, improving system reliability. Third, by sharing conductive metal for power and data transmission, circuit design is simplified, further miniaturizing the treadmill and improving its portability.

[0051] Figure 3 Schematic diagram of a specific implementation of the time-sharing power supply communication circuit of the treadmill in this embodiment.

[0052] Figure 4-Figure 17 This is a specific circuit schematic diagram of a treadmill according to an embodiment of the present application. The implementation circuit of the treadmill includes a control panel part and a display circuit part.

[0053] See also Figure 4-Figure 9 In addition to the motor, microcontroller, and first time-sharing power supply and communication circuit mentioned above, the control board also includes an encoding input circuit, an NTC detection circuit, a fan drive circuit, an AC-DC conversion circuit, an LDO voltage conversion circuit, etc. The microcontroller MCU is responsible for processing user input, controlling the motor drive circuit, and time-sharing power supply and communication with the display circuit. The encoding input circuit is used to receive user input instructions, such as speed, slope, etc. In the NTC detection circuit, the NTC (negative temperature coefficient thermistor) is used to detect the temperature inside the treadmill to prevent overheating. The cooling fan drive circuit is used to control the switch of the cooling fan to keep the temperature of the control board within a safe range. The motor drive circuit is used to control the motor of the treadmill to adjust the speed and direction. The switching power supply converts AC power into DC power to provide a stable power supply for the control board. The AC-DC conversion circuit converts high-voltage DC power into low-voltage DC power to supply the rest of the circuit. The LDO voltage conversion circuit is a low-voltage difference linear regulator used to provide a more stable low-voltage DC power.

[0054] In addition, according to the above scheme, the treadmill is implemented. During actual operation, the first time-sharing power supply communication circuit and the second time-sharing power supply communication circuit will be subject to electromagnetic interference from the motor. Therefore, to reduce interference, as a preferred solution, an optocoupler isolation circuit is also provided between the control board and the motor, and between the control board and the display circuit. The optocoupler isolation circuit uses an optocoupler to achieve electrical isolation between circuits, improving safety and anti-interference capabilities. See the schematic diagram of the optocoupler isolation circuit for details. Figure 6The device consists of multiple optocouplers (U5, U6, U7, U8, and U9) that provide electrical isolation between the input and output circuits to enhance safety and interference immunity. The input signal, after current limiting by a resistor, drives the optocoupler's LED to illuminate. The light signal emitted by the LED is received by a photosensitive element and converted into an electrical signal. The converted electrical signal is transmitted through the output circuit to the subsequent control or display circuit. Components such as diodes and transistors provide protection and signal amplification, ensuring stable signal transmission.

[0055] See also Figures 11-17 This partial schematic diagram of the display circuit includes not only the driver chip and the second time-sharing power supply communication circuit, but also a Bluetooth circuit, a buzzer driver circuit, a safety lock detection circuit, a key input circuit, a digital tube driver circuit, and a DC-DC 12V to 5V converter. The driver chip is responsible for interacting with the control board's microprocessor, processing input signals, and controlling the display content. The Bluetooth circuit receives the user's Bluetooth signal and sends it to the driver chip. The key input circuit receives the user's key input and sends it to the driver chip. The buzzer driver circuit drives the buzzer alarm. The safety lock detection circuit detects the safety lock status. The digital tube driver circuit drives the digital tube display. The DC-DC 12V to 5V converter circuit is the power supply.

[0056] In addition, the first support column 21 and the second support column 22 replace the existing wires. In actual operation, the treadmill may generate static electricity during use. Therefore, in order to effectively deal with this problem, as a preferred solution, the connection point between the first support column 21 and the positive pole of the power module and the connection point between the second support column 22 and the positive power supply end of the display circuit are respectively connected to TVS (transient voltage suppressor) for grounding, thereby improving the safety and reliability of the circuit and preventing the impact of static electricity on the human body.

[0057] In actual operation, a working cycle is divided into a power cycle and a communication cycle. During the power cycle, the SELECT signal is at a low level, the selection switch is turned on, and the power module provides a stable power supply to the display circuit through the first support column and the second support column. During the communication cycle, the SELECT signal is at a high level, the selection switch is disconnected, and the power module stops supplying power to the display circuit. The microprocessor MCU sends data to the display circuit through the transmitting interface (TX), and receives feedback data from the display circuit through the receiving interface (RX). This application reduces the complexity of the power cord and communication line through time-sharing power supply and communication circuits, and reduces the risk of failure caused by line wear. Through the supplementary design of the circuit (optocoupler isolation circuit, TVS grounding), signal interference is reduced, the stable output of the power supply is ensured, and the service life and safety of the equipment are improved.

[0058] In the prior art, time-sharing communication power supply systems achieve high efficiency and low power consumption by multiplexing time slots between power supply and communication. For example, patent CN118018356A describes a system that alternates between communication and power supply time slots, ensuring high-voltage power supply and low-voltage communication while avoiding electromagnetic interference and power consumption issues. Furthermore, patent CN103684943A discloses a low-cost, simple bus system that not only supports long-distance power transmission and data communication, but also supports bus arbitration at the physical layer. However, while these technologies have demonstrated advantages in the fields of communication and power management, such as incentivizing users to conserve electricity through time-sharing billing, rationally allocating power resources, and achieving energy conservation and emission reduction, they are primarily used in smart grids and automated control systems. While technically efficient, these systems also suffer from drawbacks such as reliability issues, high implementation costs, low user acceptance, billing complexity, and technical dependence.

[0059] In particular, these existing technologies are not directly applied to fitness equipment such as treadmills. Fitness equipment such as treadmills require a stable and efficient power supply to ensure performance during operation, and also require a reliable communication system to achieve equipment status monitoring and user interaction. The originality of this application lies in applying a time-sharing communication power supply system to a folding treadmill. During the communication time slot, the energy storage module stops drawing power from the bus, ensuring that the bus voltage is always lower than the power supply time slot during communication, thereby reducing electromagnetic interference and achieving high-speed communication. This not only improves the power efficiency of the treadmill, but also enhances the stability of communication by reducing electromagnetic interference. It also brings new technical solutions to the miniaturization and portability of fitness equipment.

[0060] Furthermore, innovations in fitness equipment, such as power generation systems based on fitness equipment, have explored the possibility of self-powering, but these typically focus on energy recovery rather than the integrated management of communication and power supply. Therefore, applying a time-sharing communication power supply system to treadmills can not only improve the reliability and efficiency of equipment operation, but also promote the development of fitness equipment in a more portable direction.

[0061] It should be emphasized that the term "include / comprises" when used herein refers to the existence of features, elements, steps or components, but does not exclude the existence or addition of one or more other features, elements, steps or components.

[0062] Although the present invention has been disclosed above through the description of specific embodiments of the present invention, it should be understood that all the above embodiments and examples are illustrative rather than restrictive. Those skilled in the art may devise various modifications, improvements, or equivalents of the present invention within the spirit and scope of the appended claims. Such modifications, improvements, or equivalents should also be considered to be within the scope of protection of the present invention.

Claims

1. A folding treadmill based on time-sharing power supply communication, characterized by: include: A frame, a first support column, a second support column, and a crossbeam, wherein the first support column and the second support column are rotatably arranged on the left and right sides of the frame, respectively, and are configured to be rotatable relative to the frame between a use position and a storage position; the crossbeam is fixedly arranged at the upper ends of the first support column and the second support column; The frame is provided with a control panel, a motor and a power supply module electrically connected to each other; A display screen is provided on the crossbeam portion, and a display circuit electrically connected to the display screen is provided inside the crossbeam portion; The first support column and the second support column are conductive columns made of metal conductive material; one end of the first support column and the second support column are electrically connected to the control board through a wire, and the other end of the first support column and the second support column are electrically connected to the display circuit through a wire; the control board provides power supply and communication for the display circuit periodically through the first support column and the second support column; specifically, each cycle is divided into a power cycle and a communication cycle. In the power cycle, the power module provides power to the display circuit, and in the communication cycle, the control board and the display circuit realize sending and receiving communication.

2. The foldable treadmill based on time-sharing power supply communication according to claim 1, characterized in that: The control board includes a microcontroller and a first time-sharing power supply communication circuit, and the display circuit includes a driving chip and a second time-sharing power supply communication circuit corresponding to the first time-sharing power supply communication circuit; the first time-sharing power supply communication circuit and the second time-sharing power supply communication circuit realize power supply and data communication through the first support column and the second support column.

3. The foldable treadmill based on time-sharing power supply communication according to claim 2, characterized in that: The first time-sharing power supply communication circuit includes a first protection unit, a first voltage clamping unit, and a first selection switch; the second time-sharing power supply communication circuit includes a second protection unit, a filtering energy storage unit, an ADC detection unit, a second voltage clamping unit, and a second selection switch; the positive electrode of the power supply module is connected in series with the first protection unit, and then connected to the first end of the first support column, the first end of the first voltage clamping unit, and the control end of the microcontroller; the second end of the first support column is connected to the first end of the ADC detection unit and the first end of the second voltage clamping unit on one hand, and is connected in series with the second protection unit and the filtering energy storage unit on the other hand, and then connected to the positive power supply end of the display circuit; the SELECT signal port, the transmit TX port, and the receive RX port of the microcontroller are respectively connected to the three input ports of the selection switch, and the output port of the first selection switch is connected to the second end of the first voltage clamping unit; the negative electrode of the power supply module is connected to the first end of the second support column, and the second end of the second support column is connected to the negative power supply end of the display circuit; the second end of the ADC detection unit is connected to the ADC port of the driver chip, the second end of the second voltage clamping unit is connected to the output end of the second selection switch, and the three input ends of the second selection switch are respectively connected to the SELECT signal port, the transmit TX port, and the receive RX port of the driver chip.

4. The foldable treadmill based on time-sharing power supply communication according to claim 3, characterized in that: The connection point between the first supporting column and the positive electrode of the power module and the connection point between the second supporting column and the positive power supply end of the display circuit are respectively connected to TVS for grounding.

5. The foldable treadmill based on time-sharing power supply communication according to claim 3, characterized in that: The first protection unit and the second protection unit are implemented by diodes.

6. The foldable treadmill based on time-sharing power supply communication according to claim 1, characterized in that: An optical coupling isolation circuit is also provided between the control board and the motor.

7. The foldable treadmill based on time-sharing power supply communication according to claim 1, characterized in that: The foldable treadmill further includes a limiting mechanism, and the first support column and the second support column are fixed in a use position or a storage position by the limiting mechanism.

8. The foldable treadmill based on time-sharing power supply communication according to claim 1, characterized in that: The folding treadmill further comprises a running belt, which is arranged on the frame and rotates under the action of a motor.

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