Intelligent direct-current motor control circuit for motorized treadmill

Abstract

The utility model provides an intelligent direct-current motor control circuit for an electric treadmill, and relates to the field of treadmills, the intelligent direct-current motor control circuit comprises a processor, a motor interface circuit, a USB interface circuit, a direct-current motor, a control circuit, a power supply and a step-down current-stabilizing circuit, the power supply is connected with the processor through the step-down current-stabilizing circuit, and the step-down current-stabilizing circuit is connected with the processor. One end of the control circuit is connected with the processor, the other end of the control circuit is connected with the direct current motor through the motor interface circuit, and the USB interface circuit is connected with the processor. According to the utility model, the internal program of the processor can be programmed according to the requirement, the intelligent degree is high, and the program can be written in according to the use requirement.

Description

Technical Field

[0001] This application relates to the field of treadmills, and more particularly, to an intelligent DC motor control circuit for an electric treadmill. Background Art

[0002] Currently, the programs of treadmills are generally set and cannot be programmed according to later usage habits, with low intelligence. Therefore, it is necessary to improve the control system of current treadmills. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an intelligent DC motor control circuit for an electric treadmill, which can solve the above technical problems.

[0004] The embodiments of this application provide an intelligent DC motor control circuit for an electric treadmill, including a processor, a motor interface circuit, a USB interface circuit, a DC motor, a control circuit, a power supply, and a step-down and current-stabilizing circuit. The power supply is connected to the processor through the step-down and current-stabilizing circuit. One end of the control circuit is connected to the processor, and the other end of the control circuit is connected to the DC motor through the motor interface circuit. The USB interface circuit is connected to the processor.

[0005] Preferably, the USB interface circuit includes a USB terminal and a USB-to-serial port chip. The USB terminal is connected to the input end of the USB-to-serial port chip, and the output end of the USB-to-serial port chip is connected to the processor.

[0006] Preferably, the model of the USB-to-serial port chip is CH340G.

[0007] Preferably, the control circuit includes a processing chip U1, a resistor R1, a resistor R2, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4. One end of the resistor R1 is connected to the processor, and the other end of the resistor R1 is connected to the third interface of the processing chip U1. The second interface and the fourth interface of the processing chip U1 are both grounded. One end of the resistor R2 is connected to the output end of the diode D2, and the other end of the resistor R2 is connected to the input end of the diode D1. The input end of the diode D2 and the output end of the diode D1 are both connected to one end of the capacitor C2. The sliding end of the resistor R2 is connected to one end of the resistor R1. One end of the capacitor C3 and one end of the capacitor C4 are both connected to the first interface of the processing chip U1. The other end of the capacitor C3 and the other end of the capacitor C4 are both connected to the eighth interface of the processing chip U1. The eighth interface of the processing chip U1 is grounded. The fifth interface of the processing chip U1 is grounded through the capacitor C1. The sixth interface of the processing chip U1 is grounded through the capacitor C2.

[0008] Preferably, the motor interface circuit includes a resistor R3, a resistor R4, a triode Q1, and a connection terminal J1. One end of the resistor R3 is connected to the seventh interface of the processing chip U1, and the other end of the resistor R3 is connected to the b-pole of the triode Q1. The c-pole of the triode Q1 is connected to the buck and current stabilization circuit through the resistor R4. The e-pole of the triode Q1 is grounded. The first interface of the connection terminal J1 is connected to the buck and current stabilization circuit. The second interface of the connection terminal J1 is grounded. The third interface of the connection terminal J1 is connected to the c-pole of the triode Q1. The connection terminal J1 is connected to the DC motor.

[0009] Preferably, the model of the processor is CC2530.

[0010] Preferably, the power supply is a lithium battery.

[0011] The beneficial effects of the present utility model:

[0012] A kind of intelligent DC motor control circuit for an electric treadmill provided by the utility model includes a processor, a motor interface circuit, a USB interface circuit, a DC motor, a control circuit, a power supply, and a step-down and current-stabilizing circuit. The power supply is connected to the processor through the step-down and current-stabilizing circuit. One end of the control circuit is connected to the processor, and the other end of the control circuit is connected to the DC motor through the motor interface circuit. The USB interface circuit is connected to the processor. When the utility model is in use, the program inside the processor can be written through the USB interface circuit, and the rotation speed of the DC motor can be controlled through the processor, the control circuit, and the motor interface circuit. The utility model can program the internal program of the processor according to requirements, with a high degree of intelligence, and the program can be written according to the usage requirements. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is the processor circuit diagram of the utility model;

[0015] Figure 2 It is the USB interface circuit diagram of the utility model;

[0016] Figure 3 It is the control circuit and motor interface circuit diagram of the utility model. Detailed Embodiments

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application that is required to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0019] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0021] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0022] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0023] As Figures 1-3 shown, a smart DC motor control circuit for an electric treadmill includes a processor, a motor interface circuit, a USB interface circuit, a DC motor, a control circuit, a power supply, and a step-down and current-stabilizing circuit. The power supply is connected to the processor through the step-down and current-stabilizing circuit. One end of the control circuit is connected to the processor, and the other end of the control circuit is connected to the DC motor through the motor interface circuit. The USB interface circuit is connected to the processor. When the present utility model is in use, the program inside the processor can be written through the USB interface circuit, and the rotation speed of the DC motor can be controlled through the processor, the control circuit, and the motor interface circuit. The present utility model can program the internal program of the processor according to requirements, has a high degree of intelligence, and can write programs according to usage requirements.

[0024] As Figure 2As shown, in this embodiment, the USB interface circuit includes a USB terminal and a USB-to-serial chip. The USB terminal is connected to the input end of the USB-to-serial chip, and the output end of the USB-to-serial chip is connected to the processor. During use, a writing device can be externally connected through the USB terminal to change the program of the processor.

[0025] Specifically, the model of the USB-to-serial chip is CH340G.

[0026] As Figure 3 shown, in this embodiment, the control circuit includes a processing chip U1, a resistor R1, a resistor R2, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4. One end of the resistor R1 is connected to the processor, and the other end of the resistor R1 is connected to the third interface of the processing chip U1. The second interface and the fourth interface of the processing chip U1 are both grounded. One end of the resistor R2 is connected to the output end of the diode D2, and the other end of the resistor R2 is connected to the input end of the diode D1. The input end of the diode D2 and the output end of the diode D1 are both connected to one end of the capacitor C2. The sliding end of the resistor R2 is connected to one end of the resistor R1. One end of the capacitor C3 and one end of the capacitor C4 are both connected to the first interface of the processing chip U1. The other end of the capacitor C3 and the other end of the capacitor C4 are both connected to the eighth interface of the processing chip U1. The eighth interface of the processing chip U1 is grounded. The fifth interface of the processing chip U1 is grounded through the capacitor C1. The sixth interface of the processing chip U1 is grounded through the capacitor C2.

[0027] Specifically, the model of the processing chip U1 is NE555P.

[0028] As Figure 3 shown, in this embodiment, the motor interface circuit includes a resistor R3, a resistor R4, a triode Q1, and a connection terminal J1. One end of the resistor R3 is connected to the seventh interface of the processing chip U1, and the other end of the resistor R3 is connected to the b pole of the triode Q1. The c pole of the triode Q1 is connected to the buck and current-stabilizing circuit through the resistor R4. The e pole of the triode Q1 is grounded. The first interface of the connection terminal J1 is connected to the buck and current-stabilizing circuit. The second interface of the connection terminal J1 is grounded. The third interface of the connection terminal J1 is connected to the c pole of the triode Q1. The connection terminal J1 is connected to the DC motor.

[0029] Specifically, the control signal sent by the processor of the present utility model is processed by the processing chip U1 and then used to control the DC motor through the motor interface circuit.

[0030] In this embodiment, the model of the processor is CC2530, and the chip core is a single-cycle 8051-compatible core; it has three different memory access buses (SFR, DATA, and CODE / XDATA) to access SFR, DATA, and the main SRAM in a single cycle, and also includes a debug interface and an 18-input extended interrupt unit.

[0031] In this embodiment, the power supply is a lithium battery, and the lithium battery provides stable power supply.

[0032] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent DC motor control circuit for an electric treadmill, characterized in that: It includes a processor, a motor interface circuit, a USB interface circuit, a DC motor, a control circuit, a power supply and a step-down and current stabilizing circuit. The power supply is connected to the processor through the step-down and current stabilizing circuit, one end of the control circuit is connected to the processor, the other end of the control circuit is connected to the DC motor through the motor interface circuit, and the USB interface circuit is connected to the processor.

2. The intelligent DC motor control circuit for an electric treadmill according to claim 1, characterized in that: The USB interface circuit comprises a USB terminal and a USB-to-serial port chip. The USB terminal is connected to an input end of the USB-to-serial port chip, and an output end of the USB-to-serial port chip is connected to the processor.

3. The intelligent DC motor control circuit for an electric treadmill according to claim 2, characterized in that: The model of the USB to serial port chip is CH340G.

4. The intelligent DC motor control circuit for an electric treadmill according to claim 1, characterized in that: The control circuit includes a processing chip U1, a resistor R1, a resistor R2, a diode D1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, and a capacitor C4. One end of the resistor R1 is connected to the processor, and the other end of the resistor R1 is connected to the third interface of the processing chip U1. The second interface and the fourth interface of the processing chip U1 are both grounded. One end of the resistor R2 is connected to the output end of the diode D2, and the other end of the resistor R2 is connected to the input end of the diode D1. The input end of the diode D2 and the output end of the diode D1 are both connected to one end of the capacitor C2. The sliding end of the resistor R2 is connected to one end of the resistor R1. One end of the capacitor C3 and one end of the capacitor C4 are both connected to the first interface of the processing chip U1. The other end of the capacitor C3 and the other end of the capacitor C4 are both connected to the eighth interface of the processing chip U1. The eighth interface of the processing chip U1 is grounded. The fifth interface of the processing chip U1 is grounded through the capacitor C1, and the sixth interface of the processing chip U1 is grounded through the capacitor C2.

5. The intelligent DC motor control circuit for an electric treadmill according to claim 4, characterized in that: The motor interface circuit includes a resistor R3, a resistor R4, a transistor Q1 and a connection terminal J1, one end of the resistor R3 is connected to the seventh interface of the processing chip U1, the other end of the resistor R3 is connected to the b-pole of the transistor Q1, the c-pole of the transistor Q1 is connected to the step-down and current stabilizing circuit through the resistor R4, the e-pole of the transistor Q1 is grounded, the first interface of the connection terminal J1 is connected to the step-down and current stabilizing circuit, the second interface of the connection terminal J1 is grounded, the third interface of the connection terminal J1 is connected to the c-pole of the transistor Q1, and the connection terminal J1 is connected to the DC motor.

6. The intelligent DC motor control circuit for an electric treadmill according to claim 1, characterized in that: The model of the processor is CC2530.

7. The intelligent DC motor control circuit for an electric treadmill according to claim 1, characterized in that: The power supply is a lithium battery.

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