Speed regulation signal output circuit, speed regulation signal output module and controller

Abstract

The utility model provides a speed regulation signal output circuit, a speed regulation signal output module and a controller, and the speed regulation signal output circuit is used for an electric vehicle controller and comprises a coding module, a single-chip microcomputer, a display module and a speed regulation interface. The power supply end of the coding module, the power supply end of the single-chip microcomputer and the power supply end of the display module are electrically connected with the power supply end of the speed regulation interface. The grounding end of the coding module, the grounding end of the single-chip microcomputer, the grounding end of the display module and the grounding end of the speed regulation interface are electrically connected in a grounding mode. The signal end of the coding module is electrically connected with the first data end of the single-chip microcomputer. The data end of the display module is electrically connected with the second data end of the single-chip microcomputer. The control end of the single-chip microcomputer is electrically connected with the signal end of the speed regulation interface. The speed regulation interface is used for being electrically connected with a rotating handle interface of the electric vehicle controller, quantitative speed regulation voltage signals can be output without manually keeping a rotating angle, and research and development of the electric vehicle controller and promotion of test work are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle controllers, in particular to a speed regulation signal output circuit, a speed regulation signal output module and a controller. Background Art

[0002] An electric vehicle speed control device is a device used to control the speed of an electric vehicle. Existing electric vehicle speed control devices are typically a handlebar composed of a linear Hall sensor and a magnet. Based on the Hall effect principle, when the handlebar is turned, the linear Hall sensor outputs a corresponding speed control voltage signal based on changes in the magnetic field as a control signal for controlling the speed of the electric vehicle. During the development and testing of electric vehicle controllers, it is sometimes necessary to provide the electric vehicle controller with a quantitative speed control voltage signal to control the motor to continuously operate at a certain speed. However, existing vehicle speed control devices can only output a speed control voltage signal based on the angle at which the handlebar is turned, and cannot output a quantitative speed control voltage signal, and the rotation angle needs to be maintained manually.

[0003] Therefore, it is necessary to provide a technical solution that can output a quantitative speed regulation voltage signal without manually maintaining the rotation angle, so as to promote the research and development and testing of electric vehicle controllers. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a speed regulation signal output circuit, a speed regulation signal output module and a controller.

[0005] The utility model provides a speed regulation signal output circuit for an electric vehicle controller, comprising: an encoding module, a single chip microcomputer, a display module, and a speed regulation interface;

[0006] The power supply terminal of the encoding module, the power supply terminal of the single chip microcomputer, and the power supply terminal of the display module are electrically connected to the power supply terminal in the speed regulation interface respectively;

[0007] The ground terminal of the encoding module, the ground terminal of the single chip microcomputer, the ground terminal of the display module, and the ground terminal of the speed regulating interface are electrically connected to the ground respectively;

[0008] The signal terminal of the encoding module is electrically connected to the first data terminal of the single chip microcomputer;

[0009] The data terminal of the display module is electrically connected to the second data terminal of the single chip microcomputer;

[0010] The control terminal of the single chip microcomputer is electrically connected to the signal terminal of the speed regulating interface;

[0011] The speed regulating interface is used to be electrically connected to the handlebar interface of the electric vehicle controller.

[0012] In a possible implementation, a first filtering unit is connected in parallel to the power supply end of the speed regulation interface.

[0013] In a possible implementation, the first filtering unit includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor;

[0014] The first ends of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are electrically connected to the power supply end of the speed regulation interface, respectively, and the second ends thereof are electrically connected to the ground.

[0015] In a possible implementation, the encoding module includes an encoder, a first resistor, a second resistor, a third resistor, a fifth capacitor, a sixth capacitor, and a seventh capacitor;

[0016] The first data terminal of the single chip microcomputer includes a first data pin, a second data pin, and a third data pin;

[0017] The first pin of the rotary switch of the encoder is electrically connected to the first end of the first resistor, the first end of the fifth capacitor, and the first data pin, respectively; the second pin of the rotary switch is electrically connected to the first end of the second resistor, the first end of the sixth capacitor, and the second data pin, respectively; the third pin of the rotary switch is electrically connected to ground; the first pin of the push switch is electrically connected to the first end of the third resistor, the first end of the seventh capacitor, and the third data pin, respectively; and the second pin of the push switch is electrically connected to ground.

[0018] In one possible implementation, the display module includes an OLED display screen and a voltage stabilizer;

[0019] The data terminal of the OLED display screen is electrically connected to the second data terminal of the single chip microcomputer, and the power terminal thereof is electrically connected to the output terminal of the voltage regulator;

[0020] The input end of the voltage regulator is electrically connected to the power supply end of the speed regulation interface.

[0021] In a possible implementation, the debugging terminal of the single chip microcomputer is electrically connected to a debugging interface.

[0022] The utility model also provides a speed regulation signal output module, comprising a printed circuit board and the speed regulation signal output circuit as described above;

[0023] The speed regulation signal output circuit is arranged on the printed circuit board.

[0024] In a possible implementation, in the speed regulation signal output module, a fixing hole is provided on an edge of the printed circuit board.

[0025] The utility model also provides a controller for an electric vehicle, comprising a controller body and the above-mentioned speed regulation signal output module;

[0026] The handlebar interface in the controller body is electrically connected to the speed regulation signal output module.

[0027] The technical solution provided by the utility model has at least the following beneficial effects:

[0028] By setting up an encoding module, when a quantitative speed regulation signal is required during the development and testing of electric vehicle controllers, the encoding module can cooperate with the single-chip microcomputer to output a quantitative speed regulation voltage signal to the electric vehicle controller through the speed regulation interface, eliminating the need for manual rotation angle maintenance, facilitating the development and testing of electric vehicle controllers. At the same time, by setting up a display module, the speed regulation voltage signal can be intuitively displayed, making it easier for operators to debug the speed regulation voltage signal that meets the requirements, effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a speed regulation signal output circuit provided by an embodiment of the present utility model;

[0030] Figure 2 A circuit diagram of a first filtering unit provided in an embodiment of the present utility model;

[0031] Figure 3 A schematic diagram of a circuit diagram of an encoding module provided in an embodiment of the present utility model;

[0032] Figure 4 A circuit diagram of an OLED display screen provided by an embodiment of the present utility model;

[0033] Figure 5 A circuit diagram of a voltage stabilizer provided in an embodiment of the present utility model;

[0034] Figure 6 A circuit diagram of a single chip microcomputer provided in an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of a debugging interface provided by an embodiment of the present utility model;

[0036] Figure 8 A schematic structural diagram of a speed regulation signal output module provided in an embodiment of the present utility model;

[0037] In the accompanying drawings, 10 is a printed circuit board; 11 is a fixing hole. DETAILED DESCRIPTION

[0038] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0039] Please refer to Figure 1 , the utility model provides a speed control signal output circuit for an electric vehicle controller, including: an encoding module, a single chip microcomputer U1, a display module, and a speed control interface H1;

[0040] The power supply terminal of the encoding module, the power supply terminal of the single chip microcomputer U1, and the power supply terminal of the display module are electrically connected to the power supply terminal VCC in the speed control interface H1 respectively;

[0041] The ground terminal of the encoding module, the ground terminal of the single chip microcomputer U1, the ground terminal of the display module, and the ground terminal of the speed regulating interface H1 are electrically connected to the ground respectively;

[0042] The signal terminal of the encoding module is electrically connected to the first data terminal of the single chip computer U1;

[0043] The data terminal of the display module is electrically connected to the second data terminal of the single chip computer U1;

[0044] The control terminal of the single chip microcomputer U1 is electrically connected to the signal terminal TS in the speed regulating interface H1;

[0045] The speed regulating interface H1 is used to be electrically connected to the handlebar interface of the electric vehicle controller.

[0046] In this embodiment, the encoding module can be implemented based on a conventional encoder, mainly providing the corresponding rotation angle and direction. The single-chip microcomputer U1 can adopt a conventional model, such as a single-chip microcomputer with a built-in DAC module, which is used to output the speed regulation voltage signal using the built-in DAC module according to the rotation angle and direction of the encoding module. The display module can be implemented based on a conventional display screen, which is used to display the output speed regulation voltage signal. The speed regulation interface H1 is a conventional interface that matches the handlebar interface of the electric vehicle controller. When the power supply terminal VCC in the speed regulation interface H1 is connected to the handlebar interface of the electric vehicle controller, a 5V DC voltage can be obtained. The speed regulation signal output circuit uses the built-in DAC of the single-chip microcomputer U1 instead of the linear Hall to output the speed regulation voltage signal, thereby realizing the quantitative output of the speed regulation signal and eliminating the need to manually maintain the rotation angle, which greatly facilitates the research and development and testing of the electric vehicle controller.

[0047] In one possible implementation, Figure 2 The power supply terminal VCC of the speed regulating interface H1 is connected in parallel with a first filtering unit.

[0048] In this embodiment, the first filtering unit can be obtained by connecting several conventional capacitors in parallel, and mainly plays a filtering role. The number of capacitors can be determined according to actual implementation needs.

[0049] In a possible implementation, the first filtering unit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4;

[0050] The first ends of the first capacitor C1 , the second capacitor C2 , the third capacitor C3 , and the fourth capacitor C4 are electrically connected to the power supply terminal VCC of the speed regulation interface H1 , and the second ends thereof are electrically connected to the ground.

[0051] In this embodiment, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are all conventional capacitors that primarily serve as filters. In a specific implementation, the first capacitor C1 can be a 1μF capacitor, the second capacitor C2 can be a 10nF capacitor, and the third capacitor C3 and the fourth capacitor C4 can both be 100nF capacitors.

[0052] In one possible implementation, Figure 3 and Figure 6 , the encoding module includes an encoder SW1, a first resistor R1, a second resistor R2, a third resistor R3, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7;

[0053] The first data terminal of the single chip computer U1 includes a first data pin A, a second data pin B, and a third data pin C;

[0054] The first pin 1 of the rotary switch of the encoder SW1 is electrically connected to the first end of the first resistor R1, the first end of the fifth capacitor C5, and the first data pin A, respectively. The second pin 2 of the rotary switch is electrically connected to the first end of the second resistor R2, the first end of the sixth capacitor C6, and the second data pin B, respectively. The third pin 3 of the rotary switch is electrically connected to ground. The first pin 4 of the push switch is electrically connected to the first end of the third resistor R3, the first end of the seventh capacitor C7, and the third data pin C, respectively. The second pin 5 of the push switch is electrically connected to ground.

[0055] In this embodiment, the encoder SW1 can adopt a conventional 360° rotatable incremental encoder with a touch button (i.e., a push switch), such as the model EC11E15244B2. The encoder SW1 is connected to the single-chip microcomputer U1 and is used to provide corresponding signals to the single-chip microcomputer U1 at a specific rotation angle and direction via the rotary switch. It can also transmit the output mode switching signal to the single-chip microcomputer U1 via the push switch. The output mode of the speed control signal output circuit can be divided into coarse adjustment and fine adjustment. When the encoder SW1 is rotated without pressing the touch button, it can be set to coarse adjustment mode, and the speed control voltage signal is output according to the set step value; when the encoder SW1 is rotated while pressing the touch button, it is set to fine adjustment mode, and the speed control voltage signal is output according to one-third of the set step value. The first resistor R1, the second resistor R2, and the third resistor R3 are all conventional resistors used as pull-up resistors, and 15KΩ resistors can be selected. The fifth capacitor C5, the sixth capacitor C6, and the seventh capacitor C7 are all conventional capacitors, which mainly play a filtering role, and 100nF capacitors can be selected.

[0056] The speed regulation voltage signal includes two aspects: voltage range and step value. In a specific embodiment, the method for setting the voltage range and step value includes the following steps: step S1, pressing the touch button of the encoder SW1 for more than 3 seconds, the display module enters the voltage range and step value setting page, and the first parameter of the setting page is the minimum value Vmin of the voltage range, the second parameter is the maximum value Vmax of the voltage range, and the third parameter is the step value Step; step S2, setting the first parameter Vmin, the value of the first parameter Vmin increases when the encoder SW1 rotates clockwise, and the value of the first parameter Vmin decreases when it rotates counterclockwise; step S3, short press the touch button of the encoder SW1, set the second parameter Vmax, the encoder SW1 increases when it rotates clockwise, and decreases when it rotates counterclockwise; step S4, short press the touch button of the encoder SW1 again, set the third parameter Step, the encoder SW1 increases when it rotates clockwise, and decreases when it rotates counterclockwise; step S5, press the touch button of the encoder SW1 again for more than 3 seconds, exit the voltage range and step value setting page, and complete the setting of the voltage range and step value. By setting the output voltage range, it can match electric vehicle controllers with different voltage requirements, effectively improving adaptability.

[0057] In this application, the speed control signal output circuit can set the voltage range and step value of the output speed control voltage signal and realize different output modes. It uses encoder SW1 as the input method and does not require manual maintenance of the rotation angle, which greatly facilitates the research and development and testing of electric vehicle controllers.

[0058] In one possible implementation, Figures 4 to 6 , the display module includes an OLED display screen OLED1 and a voltage regulator U2;

[0059] The data terminal of the OLED display OLED1 is electrically connected to the second data terminal of the single chip microcomputer U1, and the power terminal thereof is electrically connected to the output terminal VOUT of the voltage regulator U2;

[0060] The input terminal VIN of the voltage regulator U2 is electrically connected to the power supply terminal VCC of the speed regulating interface H1.

[0061] In this embodiment, the OLED display screen OLED1 adopts a conventional model, and its operating voltage is 3.3V. Its peripheral circuit is as follows: Figure 4 As shown. The SCL and SDA of the data terminal of the OLED display OLED1 are connected to the corresponding pins of the microcontroller U1. Its reset pin RES is also connected to the microcontroller U1. Its power supply terminal is provided with 3.3V voltage by the voltage regulator U2. A grounded filter capacitor (such as Figure 5 The output voltage is 3.3 V at VOUT. The output voltage can be displayed on an OLED screen, allowing you to visually observe the output speed control voltage signal.

[0062] In one possible implementation, Figure 7 The debugging end of the single chip computer U1 is electrically connected to the debugging interface H2.

[0063] In this embodiment, debug interface H2 is a conventional interface that allows a host computer to debug and program microcontroller U1. Pin 1 of debug interface H2 is connected to the SWCLK pin of microcontroller U1, pin 2 is connected to the SWDIO pin of microcontroller U1, pin 3 is connected to ground, and pin 4 is connected to the power supply VCC of speed control interface H1.

[0064] Please refer to Figure 8 , the utility model also provides a speed regulation signal output module, including a printed circuit board 10 and the speed regulation signal output circuit as described above;

[0065] The speed regulation signal output circuit is provided on the printed circuit board 10 .

[0066] In this embodiment, the printed circuit board 10 can be a conventional PCB board. The various components of the speed control signal output circuit can be arranged on both sides of the PCB board according to actual implementation needs. For example, when the encoding module includes an encoder SW1 and the display module includes an OLED display OLED1, the encoder SW1 and the OLED display OLED1 can be arranged on one side of the printed circuit board 10, and the remaining components are arranged on the other side of the printed circuit board 10. Since the encoder SW1 and the OLED display OLED1 are on the same side, the operator can directly observe the corresponding data changes on the OLED display OLED1 when operating the encoder SW1, which provides a better user experience.

[0067] In a possible implementation, in the speed control signal output module, a fixing hole 11 is provided on an edge of the printed circuit board 10 .

[0068] In this embodiment, the printed circuit board 10 can be square or rectangular. Four fixing holes 11 can be used, which can be opened at the four corners of the printed circuit board 10. The fixing holes 11 can be used to fix the printed circuit board 10, thereby providing a stable working environment.

[0069] The utility model also provides a controller for an electric vehicle, comprising a controller body and the above-mentioned speed regulation signal output module;

[0070] The handlebar interface in the controller body is electrically connected to the speed regulation signal output module.

[0071] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A speed control signal output circuit for an electric vehicle controller, characterized in that: include: Encoding module, single chip microcomputer, display module, speed control interface; The power supply terminal of the encoding module, the power supply terminal of the single chip microcomputer, and the power supply terminal of the display module are electrically connected to the power supply terminal in the speed regulation interface respectively; The ground terminal of the encoding module, the ground terminal of the single chip microcomputer, the ground terminal of the display module, and the ground terminal of the speed regulating interface are electrically connected to the ground respectively; The signal terminal of the encoding module is electrically connected to the first data terminal of the single chip microcomputer; The data terminal of the display module is electrically connected to the second data terminal of the single chip microcomputer; The control terminal of the single chip microcomputer is electrically connected to the signal terminal of the speed regulating interface; The speed regulating interface is used to be electrically connected to the handlebar interface of the electric vehicle controller.

2. The speed control signal output circuit according to claim 1, characterized in that: The power supply end of the speed regulation interface is connected in parallel with a first filtering unit.

3. The speed regulation signal output circuit according to claim 2, characterized in that: The first filtering unit includes a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor; The first ends of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are electrically connected to the power supply end of the speed regulation interface, respectively, and the second ends thereof are electrically connected to the ground.

4. The speed regulation signal output circuit according to claim 1, characterized in that: The encoding module includes an encoder, a first resistor, a second resistor, a third resistor, a fifth capacitor, a sixth capacitor, and a seventh capacitor; The first data terminal of the single chip microcomputer includes a first data pin, a second data pin, and a third data pin; The first pin of the rotary switch of the encoder is electrically connected to the first end of the first resistor, the first end of the fifth capacitor, and the first data pin, respectively; the second pin of the rotary switch is electrically connected to the first end of the second resistor, the first end of the sixth capacitor, and the second data pin, respectively; the third pin of the rotary switch is electrically connected to ground; the first pin of the push switch is electrically connected to the first end of the third resistor, the first end of the seventh capacitor, and the third data pin, respectively; and the second pin of the push switch is electrically connected to ground.

5. The speed regulation signal output circuit according to claim 1, characterized in that: The display module includes an OLED display screen and a voltage stabilizer; The data terminal of the OLED display screen is electrically connected to the second data terminal of the single chip microcomputer, and the power terminal thereof is electrically connected to the output terminal of the voltage regulator; The input end of the voltage regulator is electrically connected to the power supply end of the speed regulation interface.

6. The speed regulation signal output circuit according to claim 1, characterized in that: The debugging end of the single chip microcomputer is electrically connected to a debugging interface.

7. A speed control signal output module, characterized in that: comprising a printed circuit board and a speed regulation signal output circuit according to any one of claims 1 to 6; The speed regulation signal output circuit is arranged on the printed circuit board.

8. The speed regulation signal output module according to claim 7, characterized in that: The edge of the printed circuit board is provided with fixing holes.

9. A controller for an electric vehicle, characterized in that: It comprises a controller body and a speed regulation signal output module as claimed in claim 7 or 8; The handlebar interface in the controller body is electrically connected to the speed regulation signal output module.

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