CN211127776U

CN211127776U - High-speed pulse output circuit based on ARM

Info

Publication number: CN211127776U
Application number: CN202020125251.3U
Authority: CN
Inventors: 王献伟; 徐东桂; 张文彬; 曹小莲
Original assignee: Guangzhou Weide Electric Equipment Co ltd
Current assignee: Guangzhou Weide Electric Equipment Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-07-28
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a high-speed pulse output circuit based on ARM realization, including master control circuit, output circuit and power supply circuit, output circuit includes optoelectronic coupler OP1, the field effect transistor FET, resistance R1, resistance R2, resistance R3, short lease R4, electric capacity C1, diode D1 and diode D2, resistance R1's one end is connected with master control circuit, the other end is connected with optoelectronic coupler OP 1's A end, optoelectronic coupler OP 1's VCC end is connected with the power, diode D1's positive pole and resistance R3 establish ties, the negative pole is connected with optoelectronic coupler OP 1's VO end after parallelly connected with resistance R2, resistance R2 respectively with electric capacity C1, resistance R3 and resistance R4 are connected with the G utmost point of field effect transistor FET after parallelly connected, the D utmost point and the parallelly connected output of diode D2 of field effect transistor FET. The circuit can generate high-fidelity high-frequency pulses, and realizes high-precision operation control of the servo motor controller on the servo motor.

Description

High-speed pulse output circuit based on ARM

Technical Field

The utility model relates to the field of electronic technology, concretely relates to high-speed pulse output circuit based on ARM realizes.

Background

In an industrial application scenario or an experimental research process, a pulse signal is a common signal. The pulse signal is a discrete signal with various shapes, and compared with a common analog signal (such as a sine wave), the pulse signal has the characteristics that the waveforms are discontinuous on a time axis (the waveforms have obvious intervals), but have certain periodicity. The most common pulse wave is a rectangular wave (i.e., a square wave). The pulse signal can be used to represent information, can also be used as a carrier wave, such as Pulse Code Modulation (PCM) in pulse modulation, Pulse Width Modulation (PWM), and the like, and can also be used as a clock signal for various digital circuits and high-performance chips. In the servo motor controller, pulse signals are mainly used as carrier transmission data, the servo motor outputs high-speed pulse signals to the servo motor controller through a pulse output circuit so as to carry out high-precision operation control on the servo motor, in the prior art, the following two modes are mostly adopted to generate pulse signals for carrying out data transmission, firstly, a singlechip is adopted to generate the pulse signals, as the working frequency of most of the singlechip is lower, the high-speed pulse waveforms are difficult to generate so as to adapt to the requirements of the servo motor controller, even if the high-frequency requirements are met, the waveforms can also generate certain deformation, for example, square wave signals become sine wave signals; and secondly, a frequency generation circuit is adopted, the frequency generation circuit is constructed by each discrete device, the structure is complex, the fidelity of high-speed pulse waveform output is difficult to ensure, and the reliability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-speed pulse output circuit based on ARM realizes, and the output has high-fidelity high-frequency high-speed pulse waveform, improve circuit's reliability.

To achieve the purpose, the utility model adopts the following technical proposal:

the high-speed pulse output circuit based on ARM is provided, and comprises a main control circuit, an output circuit and a power circuit, wherein the power circuit is connected with the main control circuit, the output circuit comprises a photoelectric coupler OP1, a field effect transistor FET, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a diode D1 and a diode D2, one end of the resistor R1 is connected with the main control circuit, the other end of the resistor R1 is connected with an A end connecting end of the photoelectric coupler OP1, a VCC end of the photoelectric coupler OP1 is connected with a power supply, an anode of the diode D1 is connected with the resistor R3 in series, a cathode of the diode R2 is connected with a VO end of the photoelectric coupler OP1 in parallel, the resistor R2 is connected with a G electrode of the field effect transistor FET in parallel after being connected with the capacitor C1, the resistor R3 and the resistor R4 in parallel, and a D electrode of the diode D2 is connected with an output terminal of the diode D2 in parallel, the GND terminal of the photocoupler OP1 is connected in parallel with the capacitor C1, the resistor R4, the S-pole of the FET and the anode of the diode D2, respectively, and is grounded.

As a preferred scheme of the high-speed pulse output circuit based on ARM, the main control circuit comprises an ARM chip U, a crystal oscillator Y, a light emitting diode D, a resistor R, a capacitor C and a capacitor C, the anode of the light emitting diode D is connected with the PA end of the ARM chip U after being connected with the resistor R in series, the capacitor C is connected with the PD end of the ARM chip U after being connected with the crystal oscillator Y in parallel, the resistor R is connected with the NRST end of the ARM chip U after being connected with the capacitor C in parallel, the PB end of the ARM chip U is connected with the resistor R, and one end of the resistor R is respectively connected with the capacitor C, the, The capacitor C7 and the capacitor C8 are connected in parallel, the other end of the capacitor C7 is connected in series with the anode of the light emitting diode D4 and then connected to the PB8 end of the ARM chip U1, the VDD _1 end, the VDD _2 end, the VDD _3 end, the VDDA end, the resistor R6, the resistor R7, the capacitor C5, the capacitor C6, the capacitor C7 and the capacitor C8 of the ARM chip U1 are all connected to the 3.3V output end of the power circuit, the cathode of the light emitting diode D3, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, the BOOT0 end, the BOOT 9 end, the VSS _1 end, the VSS _2 end, the VSS _3 end and the VSSA end of the ARM chip U1 are all grounded.

As a preferable scheme of the high-speed pulse output circuit implemented based on the ARM, the power supply circuit includes a voltage stabilizing chip U2, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, and a resistor R9, the capacitor C9 is connected in parallel with an input end of the voltage stabilizing chip U2 and then connected to a power supply, an output end of the voltage stabilizing chip U2 is connected in parallel with the capacitor C10, the capacitor C11, and the capacitor C12 and then connected to the resistor R9, the resistor R9 is connected in parallel with the capacitor C13 and then outputs a 3.3V voltage, and the capacitor C9, a GND end of the voltage stabilizing chip U2, the capacitor C10, the capacitor C11, the capacitor C12, and the capacitor C13 are connected in parallel to ground.

As a preferable scheme of the high-speed pulse output circuit based on the ARM implementation, the ARM chip U1 is STM32F103C8T 6.

As a preferable scheme of the high-speed pulse output circuit based on ARM realization, the voltage stabilizing chip U2 is L M1117-3.3.

As a preferable scheme of the high-speed pulse output circuit realized based on ARM, the photoelectric coupler OP1 is HCP L-0201-500E.

As a preferable scheme of the high-speed pulse output circuit based on the ARM, the FET is 2SK 2055.

As a preferable scheme of the high-speed pulse output circuit implemented based on the ARM, the resistance of the resistor R1 is 470 Ω, the resistances of the resistor R2 and the resistor R3 are 560 Ω, the resistances of the resistor R4 and the resistor R5 are 10K, the resistance of the resistor R6 is 2.2K, the resistances of the resistor R7 and the resistor R8 are 1K, and the resistance of the resistor R9 is 0 Ω.

As a preferable scheme of the high-speed pulse output circuit implemented based on the ARM, the capacitance of the capacitor C1 is 680pF, the capacitances of the capacitor C2 and the capacitor C3 are both 15pF, the capacitances of the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C10 are all 0.1 μ F, the capacitance of the capacitor C9 is 1 μ F, the capacitances of the capacitor C11 and the capacitor C12 are all 470 μ F, and the capacitance of the capacitor C13 is 1F.

The utility model has the advantages that: the utility model discloses constitute by ARM chip STM32F103C8T6, high-speed opto-coupler and other resistance-capacitance ware, ARM chip STM32F103C8T 6's senior timer TIM1 can produce high-speed pulse to keep apart output to servo controller through high-speed opto-coupler. The utility model discloses an output circuit can produce the frequency up to 500KHz, can let the high-speed pulse waveform of output have the characteristics of high-fidelity high frequency, has realized that the servo motor controller has very high reliability to servo motor's high accuracy operation control.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic circuit diagram of an output circuit according to an embodiment of the present invention.

Fig. 2 is a schematic circuit diagram of a main control circuit according to an embodiment of the present invention.

Fig. 3 is a schematic circuit diagram of a power circuit according to an embodiment of the present invention.

In fig. 1 to 3:

1. a master control circuit; 2. an output circuit; 3. a power supply circuit.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to fig. 3, the high-speed pulse output circuit implemented based on the ARM in the embodiment of the present invention includes a main control circuit 1, an output circuit 2 and a

power supply circuit

3, 12 the power supply circuit 3 is connected to the main control circuit 1, the output circuit 2 includes a photocoupler OP1, a FET, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a diode D1 and a diode D2, one end of the resistor R1 is connected to the main control circuit 1, the other end is connected to an a-terminal connection end 1 of the photocoupler OP1, a VCC terminal of the photocoupler OP1 is connected to a power supply, a positive terminal of the diode D1 is connected in series with the resistor R3, a negative terminal is connected in parallel to the resistor R2 and then to a VO terminal of the photocoupler 84, the resistor R2 is connected to a G terminal of the FET after being connected in parallel to the capacitor C1, a negative terminal D terminal of the FET is connected in parallel to a negative terminal and a negative terminal of the diode D5, and an OP1 is connected to a negative terminal of the, The resistor R4, the S pole of the FET and the anode of the diode D2 are connected in parallel to ground.

The master control circuit 1 in this embodiment can produce the frequency up to 500KHz, can let the high-speed pulse waveform of output have the high-fidelity high-frequency characteristics, and the high-speed pulse that master control circuit 1 produced exports the servo motor controller after passing through optoelectronic coupler OP1 isolation among the output circuit 2, can realize servo motor controller to servo motor's high accuracy operation control, has very high reliability.

As a preferred embodiment of the present invention, the main control circuit 1 includes an ARM chip U1, a crystal oscillator Y1, a light emitting diode D3, a light emitting diode D4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8, wherein an anode of the light emitting diode D3 is connected in series with the resistor R3 and then connected to a PA 3 of the ARM chip U3, the capacitor C3 is connected in parallel with the crystal oscillator Y3 and then connected to a PD 3 of the ARM chip U3, an end terminal resistor R3 connected in parallel with the capacitor C3 and then connected to an NRST of the ARM chip U3, a PB 3 of the ARM chip U3 is connected to a resistor R3, a capacitor R72 of the ARM C3 and a capacitor C3, and a capacitor C72 of the light emitting diode D3 are connected in parallel with a light emitting diode D3, and a capacitor C3 of the light emitting diode D3, and a capacitor C, The VDD _2 terminal, the VDD _3 terminal, the VDDA terminal, the resistor R6, the resistor R7, the capacitor C5, the capacitor C6, the capacitor C7, and the capacitor C8 are all connected to the 3.3V output terminal of the power circuit 3, and the cathode of the light emitting diode D3, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, the BOOT0 terminal of the ARM chip U1, the BOOT1 terminal, the VSS _1 terminal, the VSS _2 terminal, the VSS _3 terminal, and the VSSA terminal are all grounded.

In this embodiment, the power circuit 3 includes a voltage regulator chip U2, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, and a resistor R9, the capacitor C9 is connected in parallel with the input terminal of the voltage regulator chip U2 and then connected to the power supply, the output terminal of the voltage regulator chip U2 is connected in parallel with the capacitor C10, the capacitor C11, and the capacitor C12 and then connected to the resistor R9, the resistor R9 is connected in parallel with the capacitor C13 and then outputs a 3.3V voltage, and the capacitor C9, the GND terminal of the voltage regulator chip U2, the capacitor C10, the capacitor C11, the capacitor C12, and the capacitor C13 are connected in parallel to the ground. The main function of the power circuit 3 in this embodiment is to step down the 5V voltage to a stable 3.3V voltage, and the 3.3V voltage can be used as a power supply for the ARM chip U1. The power circuit 3 adopts a voltage stabilizing chip U2 to output a 3.3V power supply voltage, the voltage stabilizing chip U2 is provided with overcurrent and overtemperature protection, and the power supply circuit can automatically cut off when the current exceeds a certain value so as to prevent the environment temperature from causing overhigh junction temperature. The voltage stabilizing chip U2 is respectively connected with the capacitor at the input end and the output end, and can play a role in filtering clutter interference.

In the embodiment, the ARM chip U1 is STM32F103C8T 6.

In this embodiment, the voltage regulator chip U2 is L M1117-3.3.

In this embodiment, the photocoupler OP1 is HCP L-0201-500E.

In this embodiment, the FET is 2SK 2055.

In this embodiment, the resistance of the resistor R1 is 470 Ω, the resistances of the resistor R2 and the resistor R3 are both 560 Ω, the resistances of the resistor R4 and the resistor R5 are both 10K, the resistance of the resistor R6 is 2.2K, the resistances of the resistor R7 and the resistor R8 are both 1K, and the resistance of the resistor R9 is 0 Ω.

In this embodiment, the capacitance of the capacitor C1 is 680pF, the capacitances of the capacitor C2 and the capacitor C3 are 15pF, the capacitances of the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C10 are 0.1 μ F, the capacitance of the capacitor C9 is 1 μ F, the capacitances of the capacitor C11 and the capacitor C12 are 470 μ F, and the capacitance of the capacitor C13 is 1F.

The working principle is as follows: the circuit consists of an ARM chip STM32F103C8T6, a high-speed optical coupler and other resistance-capacitance devices, the STM32F103C8T6 is a 32-bit processor chip based on ARM Cortex-M3, and is provided with 7 16-bit timers, 2A/D converters and 9 communication interfaces, wherein the TIM1 of the advanced timer of the STM32F103C8T6 is controlled by programming, the advanced timer T1M1 can generate variable high-speed pulses, the frequency and the duty ratio of the pulses can be changed according to the circuit requirements, when the value of the A/D converter is changed from 0V to 5V, the frequency is changed accordingly, the frequency-emitting range is between 0KHZ and 500KHZ, and then the pulses are isolated and output to a servo controller through the high-speed optical coupler. When the power supply circuit 1 which provides stable voltage for the STM32F103C8T6 is started, the advanced timer TIM1 of the STM32F103C8T6 can generate a high-speed pulse signal, the high-speed pulse signal passes through the photoelectric coupler OP1 in the output circuit 2, and the high-speed pulse signal is output to the servo motor controller from the FET after passing through the photoelectric coupler OP1, so that the servo motor controller can realize high-precision operation control of the servo motor due to the fact that the input and the output of the photoelectric coupler OP1 are mutually isolated and the signal transmission has the characteristics of unidirectionality and the like.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A high-speed pulse output circuit realized based on ARM is characterized by comprising a main control circuit (1), an output circuit (2) and a power supply circuit (3), wherein the power supply circuit (3) is connected with the main control circuit (1), the output circuit (2) comprises a photoelectric coupler OP1, a field effect transistor FET, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a diode D1 and a diode D2, one end of the resistor R1 is connected with the main control circuit (1), the other end of the resistor R1 is connected with an A end connection end of the photoelectric coupler OP1, a VCC end of the photoelectric coupler OP1 is connected with a power supply, an anode of the diode D1 is connected with the resistor R3 in series, a cathode is connected with the resistor R2 in parallel and then connected with a VO end of the photoelectric coupler OP1, the resistor R2 is respectively connected with the capacitor C1, the resistor R3 and the resistor R68525 in parallel and then connected with a FET 4, the D pole of the FET is connected with the negative pole of the diode D2 in parallel for output, and the GND end of the photoelectric coupler OP1 is connected with the capacitor C1, the resistor R4, the S pole of the FET and the positive pole of the diode D2 in parallel and is grounded.

2. The ARM-based high-speed pulse output circuit according to claim 1, wherein the main control circuit (1) comprises an ARM chip U1, a crystal oscillator Y1, a light emitting diode D3, a light emitting diode D4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8, wherein an anode of the light emitting diode D3 is connected in series with the resistor R5 and then connected with a PA8 end of the ARM chip U1, the capacitor C2 is connected in parallel with the crystal oscillator Y1 and then connected with a PD0 end of the ARM chip U1, the capacitor C3 is connected in parallel with the crystal oscillator Y1 and then connected with a PD1 end of the ARM chip U1, the resistor R6 is connected in parallel with the capacitor C4 and then connected with an NRST end of the ARM chip U8672, and the resistor R1 is connected with an NRST end of the ARM chip 1, and the resistor R1 and the capacitor C1 are respectively connected with the ARM chip 1, The capacitor C6, the capacitor C7, and the capacitor C8 are connected in parallel, and the other end of the capacitor C6 is connected in series with the anode of the light emitting diode D4 and then connected to the PB8 of the ARM chip U1, the VDD _1 terminal, the VDD _2 terminal, the VDD _3 terminal, the VDDA terminal, the resistor R6, the resistor R7, the capacitor C5, the capacitor C6, the capacitor C7, and the capacitor C8 of the ARM chip U1 are all connected to the 3.3V output terminal of the power circuit (3), the cathode of the light emitting diode D3, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C9, the capacitor C8, and the BOOT0 terminal, BOOT1 terminal, VSS _1 terminal, VSS _2 terminal, VSS _3 terminal, and VSSA terminal are all grounded.

3. The ARM-based high-speed pulse output circuit as claimed in claim 2, wherein the power circuit (3) comprises a voltage regulation chip U2, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13 and a resistor R9, the capacitor C9 is connected with the input end of the voltage regulation chip U2 in parallel and then connected with a power supply, the output end of the voltage regulation chip U2 is connected with the capacitor C10, the capacitor C11 and the capacitor C12 in parallel and then connected with the resistor R9, the resistor R9 is connected with the capacitor C13 in parallel and then outputs a 3.3V voltage, and the capacitor C9, the GND end of the voltage regulation chip U2, the capacitor C10, the capacitor C11, the capacitor C12 and the capacitor C13 are connected with ground in parallel.

4. The high-speed pulse output circuit based on the ARM implementation of claim 2, wherein the ARM chip U1 is STM32F103C8T 6.

5. The ARM-based implementation high-speed pulse output circuit of claim 3, wherein the voltage regulation chip U2 is L M1117-3.3.

6. The ARM-based high-speed pulse output circuit as claimed in claim 1, wherein the optoelectronic coupler OP1 is HCP L-0201-.

7. The ARM-based high-speed pulse output circuit as claimed in claim 1, wherein the FET is 2SK 2055.

8. The ARM-based high-speed pulse output circuit as claimed in claim 3, wherein the resistance value of the resistor R1 is 470 Ω, the resistance values of the resistor R2 and the resistor R3 are both 560 Ω, the resistance values of the resistor R4 and the resistor R5 are both 10K, the resistance value of the resistor R6 is 2.2K, the resistance values of the resistor R7 and the resistor R8 are both 1K, and the resistance value of the resistor R9 is 0 Ω.

9. The ARM-based high-speed pulse output circuit as claimed in claim 3, wherein the capacitance of the capacitor C1 is 680pF, the capacitances of the capacitor C2 and the capacitor C3 are both 15pF, the capacitances of the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C10 are all 0.1 μ F, the capacitance of the capacitor C9 is 1 μ F, the capacitances of the capacitor C11 and the capacitor C12 are all 470 μ F, and the capacitance of the capacitor C13 is 1F.