Fine grading gear control circuit

Abstract

The utility model relates to the technical field of gear control, in particular to a fine grading gear control circuit, which comprises a power supply VCC (virtual channel connection) for providing DC5V voltage; the input end of the adjustable circuit is electrically connected with the power supply VCC; the input end of the voltage division circuit is electrically connected with the adjustable circuit; and an ADC pin of the MCU control chip is electrically connected with one output end of the voltage division circuit, and one output end of the voltage division circuit is grounded.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear control technical field, concretely is a kind of fine grade control circuit. BACKGROUND

[0002] Gear control is a common function, widely used in various devices, such as motor speed regulation, home appliance control, light adjustment, etc.

[0003] However, many electric appliances on the market currently use adjustable resistors to set the working gear, and such devices generally have few gears, and the precision and stability are not high.

[0004] Therefore, it is necessary to provide a fine gear control circuit to solve this problem. UTILITY MODEL CONTENTS

[0005] The utility model provides a fine gear control circuit to solve the above problems.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A fine gear control circuit, comprising:

[0008] Power supply VCC, the power supply VCC provides DC5V voltage;

[0009] Adjustable circuit, the input end of the adjustable circuit is electrically connected with power supply VCC;

[0010] Voltage dividing circuit, the input end of the voltage dividing circuit is electrically connected with adjustable circuit;

[0011] MCU control chip, the ADC pin of the MCU control chip is electrically connected with the output end of the voltage dividing circuit, and the output end of the voltage dividing circuit is grounded;

[0012] Wherein, when the adjustable circuit adjusts output voltage, then the ADC pin collects voltage signal through the output end of voltage dividing circuit, and compares the voltage signal collected with the value set by MCU control chip, and outputs corresponding gear control signal after comparison.

[0013] As the preferred scheme of the utility model, the adjustable circuit is adjustable resistor R1, one end of the adjustable resistor R1 is electrically connected with power supply VCC.

[0014] As the preferred scheme of the utility model, the voltage dividing circuit includes resistor R2, resistor R3;One end of the resistor R2, one end of the resistor R3 are electrically connected with the other end of adjustable resistor R1, one end of the resistor R3 is also electrically connected with the adjustment end of adjustable resistor R1, and the other end of the resistor R2 is grounded.

[0015] As the preferred scheme of the utility model, the MCU control chip is BF7612 chip, the ADC pin of the BF7612 chip is electrically connected with the other end of resistance R3.

[0016] As the preferred scheme of the utility model, the fine division gear control circuit further includes filter capacitor C1, one end of the filter capacitor C1 is electrically connected with the other end of resistance R3, and the other end of the capacitor C1 is grounded.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] In the utility model, when the output voltage is adjusted through the adjustable circuit, the ADC pin collects the voltage signal through the output end of the voltage dividing circuit, and compares the collected voltage signal with the value set by the MCU control chip, and outputs the corresponding gear control signal after comparison; Such design can output different voltages through the adjustable circuit, so that the MCU control chip outputs different control signals, so that the control of different gears can be realized, and different gear controls can also be accurately realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the circuit block diagram of the utility model;

[0020] Figure 2 It is the circuit principle diagram of the utility model. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Embodiment, please refer to Figure 1 The utility model provides a technical scheme:

[0023] A fine division gear control circuit, comprising:

[0024] Power supply VCC1, the power supply VCC1 provides DC5V voltage;

[0025] Adjustable circuit 2, the input end of the adjustable circuit 2 is electrically connected with power supply VCC1;

[0026] Voltage dividing circuit 3, the input end of the voltage dividing circuit 3 is electrically connected with adjustable circuit 2;

[0027] The MCU control chip 4, an ADC pin of the MCU control chip 4 is electrically connected with an output end of the voltage dividing circuit 3, and the output end of the voltage dividing circuit 3 is grounded.

[0028] When the output voltage of the adjustable circuit 2 is adjusted, the voltage signal is collected through the output end of the voltage dividing circuit 3, and the collected voltage signal is compared with the value set by the MCU control chip 4, and the corresponding gear control signal is output after comparison, so that different voltage signals can be output by the adjustable circuit 2, different control signals can be output by the MCU control chip 4, and the control of different gears can be realized, and the control of different gears can be accurately realized.

[0029] In the embodiment, referring to Figure 1 、 Figure 2 , the adjustable circuit 2 is an adjustable resistor R1, one end of the adjustable resistor R1 is electrically connected with a power supply VCC1, the voltage dividing circuit 3 comprises resistors R2 and R3, one end of the resistor R2 and one end of the resistor R3 are electrically connected with the other end of the adjustable resistor R1, one end of the resistor R3 is also electrically connected with an adjusting end of the adjustable resistor R1, the other end of the resistor R2 is grounded, and the MCU control chip 4 is a BF7612 chip, and an ADC pin of the BF7612 chip is electrically connected with the other end of the resistor R3.

[0030] When the resistance value of the adjustable resistor R1 changes, the voltage output through the adjustable resistor R1 also changes, then the voltage is divided through the resistors R2 and R3, the ADC pin of the BF7612 chip collects the changed voltage signal, and then the corresponding control signal is output after comparison by the internal operation of the BF7612 chip, so that the control of gears is realized.

[0031] In the embodiment, referring to Figure 1 、 Figure 2 , the fine gear control circuit further comprises a filter capacitor C1, one end of the filter capacitor C1 is electrically connected with the other end of the resistor R3, the other end of the capacitor C1 is grounded, and the capacitor C1 is used for filtering interference signals, so that the error gear control signal output by the BF7612 chip is avoided.

[0032] The working principle of the utility model is as follows:

[0033] 1. When the resistance value of the adjustable resistor R1 changes, the voltage output through the adjustable resistor R1 also changes;

[0034] 2. Then the voltage is divided through the resistors R2 and R3, and the changed voltage signal is collected by the ADC pin of the BF7612 chip;

[0035] 3. Then again through the BF7612 chip internal operation comparison and output corresponding control signal to realize the control of gear;

[0036] 4. Through the capacitor C1 for filtering out interference signal, thereby avoiding the BF7612 chip output error gear control signal.

[0037] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microshift control circuit, characterized by: The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit.

2. The fine indexing control circuit of claim 1, wherein: The application relates to a fine division gear control circuit.

3. The fine indexing control circuit of claim 2, wherein: The application relates to a fine division gear control circuit.

4. The fine indexing control circuit of claim 3, wherein: The application relates to a fine division gear control circuit.

5. The fine indexing control circuit of claim 4, wherein: The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit. The application relates to a fine division gear control circuit

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