CN211457037U - Fascia gun based on pressure induction and motor controller - Google Patents

Abstract

The utility model discloses a fascia gun and a motor controller based on pressure induction, comprising: a motor Hall signal detection circuit for detecting a motor Hall signal or a motor coil back electromotive force detection circuit for detecting the motor coil back electromotive force ;The motor coil current detection circuit used to detect the current value of the motor coil; used to calculate the speed of the motor according to the motor Hall signal or the back EMF of the motor coil, and calculate the massage pressure of the fascia gun through the current value of the motor coil and the speed of the motor value, and a single-chip microcomputer that outputs the control amount of the motor speed based on the massage pressure value of the fascia gun, the single-chip microcomputer is respectively electrically connected with the motor Hall signal detection circuit and the motor coil current detection circuit; and the control amount of the motor speed is converted into the control of the motor voltage and current A large amount of motor drive circuit, the motor drive circuit is electrically connected with the single-chip microcomputer. The utility model can automatically adjust the rotational speed of the motor through the changes of the rotational speed of the motor and the working current, thereby realizing the stepless speed regulation.

Description

Fascia gun and motor controller based on pressure sensing

technical field

The utility model belongs to the technical field of fascia guns, in particular to a fascia gun and a motor controller based on pressure induction.

Background technique

The fascia gun mainly stimulates various receptors in muscles, muscle building and joint capsules through high-frequency vibration. Using the fascia gun to massage the human body can reduce myogenic pain and reduce the accumulation of lactic acid.

The existing fascia guns mainly have the following problems:

(1) Manual buttons are used to adjust the massage speed, the speed classification is not fine enough, and it is difficult to achieve the speed required by the user.

(2) Since the fascia gun works in a vibrating state, the keys and their circuit boards are easily damaged by prolonged vibration.

(3) The buttons and display panel will increase the cost, volume and weight of the whole machine, and are not easy to carry and use.

Therefore, it is necessary to develop a new pressure-sensing-based fascia gun and motor controller.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a fascia gun and a motor controller based on pressure induction, which can automatically adjust the speed of the motor through changes in the speed of the motor and the working current, so as to realize stepless speed regulation.

In the first aspect, a motor controller according to the present invention is used to control the motor operation of the fascia gun, and the motor controller includes:

Motor Hall signal detection circuit for detecting motor Hall signal;

A motor coil current detection circuit for detecting the motor coil current value;

It is used to calculate the speed of the motor according to the Hall signal of the motor, calculate the massage pressure value of the fascia gun through the current value of the motor coil and the speed of the motor, and output the control amount of the motor speed based on the massage pressure value of the fascia gun. respectively electrically connected with the motor Hall signal detection circuit and the motor coil current detection circuit;

and a motor drive circuit for converting the control quantity of the motor speed into the control quantity of the voltage and current of the motor, and the motor drive circuit is electrically connected with the single chip microcomputer.

In the second aspect, a motor controller according to the present invention is used to control the motor operation of the fascia gun, and the motor controller includes:

A motor coil back EMF detection circuit for detecting the motor coil back EMF;

A motor coil current detection circuit for detecting the motor coil current value;

It is used to calculate the speed of the motor according to the back EMF of the motor coil, calculate the massage pressure value of the fascia gun through the current value of the motor coil and the speed of the motor, and output the control amount of the motor speed based on the massage pressure value of the fascia gun. respectively electrically connected with the motor coil back-EMF detection circuit and the motor coil current detection circuit;

and a motor drive circuit for converting the control quantity of the motor speed into the control quantity of the voltage and current of the motor, and the motor drive circuit is electrically connected with the single chip microcomputer.

In the third aspect, a pressure-sensing-based fascia gun according to the present invention includes a fascia gun body, a motor and a motor controller, the motor controller is electrically connected to the motor, and the motor controller adopts the The motor controller of the utility model.

In the fourth aspect, a pressure-sensing-based fascia gun according to the present invention includes a fascia gun body, a motor and a motor controller, the motor controller is electrically connected to the motor, and the motor controller adopts the The motor controller of the utility model.

This has the following advantages:

(1) By detecting the change of motor speed and working current, the controller automatically adjusts the motor speed, and can perform stepless speed regulation to achieve the speed required by the user;

(2) There is no button, and the speed of the motor is automatically adjusted by sensing the operator's pressing force.

(3) Cancel the button, improve the reliability and reduce the cost.

Description of drawings

Fig. 1 is the principle block diagram of Embodiment 1;

Fig. 2 is the principle block diagram of Embodiment 2;

Fig. 3 is the specific circuit diagram of the motor Hall signal detection circuit;

4 is a specific circuit diagram of a motor coil current detection circuit;

5 is a specific circuit diagram of a motor coil back-EMF detection circuit;

In the figure: 1. Motor Hall signal detection circuit, 2. Motor coil current detection circuit, 3. SCM, 4. Motor drive circuit, 5. Motor, 6. Motor coil back EMF detection circuit.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in FIG. 1 , in this embodiment, a motor controller is used to control the operation of the motor of the fascia gun. The motor controller includes a motor Hall signal detection circuit 1 , a motor coil current detection circuit 2 , and a single-chip microcomputer 3 and motor drive circuit 4. The motor hall signal detection circuit 1 is used to detect the motor hall signal. The motor coil current detection circuit 2 is used to detect the motor coil current value. The single-chip microcomputer 3 is respectively electrically connected with the motor Hall signal detection circuit 1 and the motor coil current detection circuit 2. The single-chip microcomputer 3 is used to calculate the rotational speed of the motor 5 according to the motor Hall signal, and pass the current value of the motor coil and the current value of the motor 5. The speed calculates the massage pressure value of the fascia gun, and outputs the motor speed control amount based on the massage pressure value of the fascia gun. The motor driving circuit 4 is electrically connected with the single chip 3, and the motor driving circuit 4 converts the control amount of the motor speed into the control amount of the voltage and current of the motor, so as to achieve the purpose of speed regulation.

As shown in FIG. 3 , in this embodiment, the motor Hall signal detection circuit 1 includes a Hall element, a resistor R1, a resistor R2 and a capacitor C3. One end of the Hall element is grounded, and the Hall element is also connected to the resistor R2 and the capacitor. After C3 is grounded, the resistor R1 is connected in parallel with the Hall element.

As shown in FIG. 4 , in this embodiment, the motor coil current detection circuit 2 includes a sampling resistor, a resistor R4, a resistor R5, a resistor R6, a capacitor C1 and an amplifier U, and the positive input terminal of the amplifier U is grounded after the capacitor C1 , the forward input end of amplifier U is grounded through resistor R4 and sampling resistor, the reverse input end of amplifier U is grounded through resistor R6, and the reverse input end of amplifier U is connected to the output end of amplifier U through R5.

In this embodiment, a fascia gun based on pressure induction includes a fascia gun body, a motor 5 and a motor controller, the motor controller is electrically connected to the motor 5, and the motor controller adopts the the motor controller.

When the fascia gun is working, the motor Hall signal detection circuit 1 is used to collect the motor Hall signal, and the motor coil current detection circuit 2 is used to collect the motor coil current value. The current value of the motor coil calculates the massage pressure value of the fascia gun (that is, determines the user's pressing force), and automatically adjusts the motor speed linearly according to the pressing force; it can achieve a proportional relationship between the pressure and the motor speed. The fascia gun described in this embodiment realizes linear speed adjustment, has high reliability, and at the same time eliminates the button adjustment switch, which saves cost and reduces weight.

Embodiment 2

As shown in FIG. 2 , in this embodiment, a motor controller is used to control the operation of the motor of the fascia gun. The motor controller includes a motor coil back EMF detection circuit 6 , a motor coil current detection circuit 2 , and a single-chip microcomputer 3 and motor drive circuit 4. The motor coil back EMF detection circuit 6 is used to detect the motor coil back EMF (ie, the BEMF signal). The motor coil current detection circuit 2 is used to detect the motor coil current value. The single chip microcomputer 3 is respectively electrically connected with the motor coil back EMF detection circuit 6 and the motor coil current detection circuit 2; The speed calculates the massage pressure value of the fascia gun, and outputs the motor speed control amount based on the massage pressure value of the fascia gun. The motor drive circuit 4 is electrically connected with the single chip 3, and the motor drive circuit 4 converts the control amount of the motor speed into the control amount of the voltage and current of the motor, so as to achieve the purpose of adjusting the speed.

As shown in FIG. 5 , in this embodiment, the motor coil back EMF detection circuit 6 includes resistors R7 to R15, the resistors R11 and R13 are connected in series, and the connection point of the resistors R11 and R13 is connected to one end of the resistor R15; The resistor R10 and the resistor R12 are connected in series, and the connection point of the resistor R10 and the resistor R12 is connected to one end of the resistor R14; the resistor R7 and the resistor R8 are connected in series, and the connection point of the resistor R7 and the resistor R8 is connected to one end of the resistor R9.

In this embodiment, a fascia gun based on pressure induction includes a fascia gun body, a motor 5 and a motor controller, the motor controller is electrically connected to the motor 5, and the motor controller adopts the the motor controller.

Claims (4)

1. A motor controller for controlling the motor operation of a fascia gun, wherein the motor controller comprises: A motor Hall signal detection circuit (1) for detecting the motor Hall signal; a motor coil current detection circuit (2) for detecting the current value of the motor coil; It is used to calculate the speed of the motor (5) according to the motor Hall signal, and calculate the massage pressure value of the fascia gun through the current value of the motor coil and the speed of the motor (5), and output the motor speed control based on the massage pressure value of the fascia gun A single-chip microcomputer (3) of a certain amount is electrically connected with the motor Hall signal detection circuit (1) and the motor coil current detection circuit (2) respectively; and a motor drive circuit (4) for converting the control quantity of the motor speed into the control quantity of the voltage and current of the motor, and the motor drive circuit (4) is electrically connected with the single-chip microcomputer (3). 2. A motor controller for controlling the motor operation of a fascia gun, characterized in that, comprising: a motor coil back EMF detection circuit (6) for detecting the motor coil back EMF; a motor coil current detection circuit (2) for detecting the current value of the motor coil; It is used to calculate the speed of the motor (5) according to the back EMF of the motor coil, and calculate the massage pressure value of the fascia gun through the current value of the motor coil and the speed of the motor (5), and output the motor speed control based on the massage pressure value of the fascia gun A single-chip microcomputer (3) of a certain amount, the single-chip microcomputer (3) is electrically connected with the motor coil back-EMF detection circuit (6) and the motor coil current detection circuit (2) respectively; and a motor drive circuit (4) for converting the control quantity of the motor speed into the control quantity of the voltage and current of the motor, and the motor drive circuit (4) is electrically connected with the single-chip microcomputer (3). 3. A fascia gun based on pressure induction, comprising a fascia gun body, a motor (5) and a motor controller, wherein the motor controller is electrically connected to the motor (5), characterized in that the motor controller adopts The motor controller of claim 1 . 4. A fascia gun based on pressure induction, comprising a fascia gun body, a motor (5) and a motor controller, wherein the motor controller is electrically connected to the motor (5), characterized in that the motor controller adopts The motor controller of claim 2.

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