阅读说明：本技术 一种电动工具控制系统及控制方法 (Electric tool control system and control method ) 是由 杨敬辉 于镭 杜万和 刘明言 韩玲玲 于 2021-09-13 设计创作，主要内容包括：本发明涉及电动工具控制技术领域,具体是一种电动工具控制系统及控制方法,包括主控模块,所述主控模块上分别连接有电源模块、显示屏模块、电位器模块和换向模块；所述换向模块包括U相线、V相线和W相线,一端分别与所述主控模块的U相接线端、V相接线端和W相接线端插接,另一端与电机连接。本系统不仅结构简单,而且可方便操作者安全使用,增加设备的使用寿命。(The invention relates to the technical field of electric tool control, in particular to an electric tool control system and a control method, which comprises a main control module, wherein the main control module is respectively connected with a power supply module, a display screen module, a potentiometer module and a reversing module; the reversing module comprises a U-phase line, a V-phase line and a W-phase line, one end of the reversing module is respectively connected with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end of the main control module in an inserting mode, and the other end of the reversing module is connected with the motor. The system is simple in structure, can be conveniently and safely used by an operator, and prolongs the service life of equipment.)

1. The electric tool control system is characterized by comprising a main control module, wherein the main control module is respectively connected with a power supply module, a display screen module, a potentiometer module and a reversing module; the reversing module comprises a U-phase line, a V-phase line and a W-phase line, one end of the reversing module is respectively connected with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end of the main control module in an inserting mode, and the other end of the reversing module is connected with the motor.

2. The electric tool control system of claim 1, further comprising a power switch for controlling power supply, wherein the main control module, the potentiometer module, the commutation module and the display module are integrated on a PCB board, the power module and the motor are encapsulated by a housing, and the power switch and the display module are matched with a switch key slot and a display slot provided on the housing for external control and observation.

3. The power tool control system of claim 2, wherein the potentiometer module is a potentiometer having a knob that mates with a knob slot provided in the housing for external adjustment.

4. The electric tool control system of claim 1, wherein the commutation module commutates the direction of rotation of the motor by changing the insertion positions of the U-phase, V-phase and W-phase lines with the U-phase, V-phase and W-phase terminals of the main control module.

5. The electric tool control system of claim 4, wherein the connection mode of the commutation module corresponding to the U-phase terminal, the V-phase terminal and the W-phase terminal of the main control module comprises:

the first rotation direction wiring sequence is as follows: the device comprises a U-phase line, a V-phase line and a W-phase line, or a V-phase line, a W-phase line and a U-phase line, or a W-phase line, a U-phase line and a V-phase line;

the second rotation direction wiring sequence is as follows: v-phase line, U-phase line and W-phase line, or W-phase line, V-phase line and U-phase line, or U-phase line, W-phase line and V-phase line.

6. The power tool control system of claim 1, wherein a buzzer is further coupled to the master control module for audible alarm.

7. The power tool control system of claim 1, wherein the power module is an internal rechargeable lithium battery or an external rechargeable lithium battery.

8. A control method of an electric tool control system is characterized in that a state machine module and a data acquisition module are arranged in a main control module, and the control method comprises the following steps:

the data acquisition module is used for acquiring working parameters of all modules in the system, and the main control module calculates and analyzes the working parameter information and then displays the working parameter information through the display screen module;

and monitoring the working state of the motor through the state machine module, and carrying out corresponding processing on different working states by the main control module and displaying a processing result through the display screen module.

9. The control method of an electric tool control system according to claim 8, wherein the operating parameters include: working temperature, working current, working voltage and motor speed.

10. The control method of an electric tool control system according to claim 8, wherein the operating state includes: the method comprises the following steps of (1) initializing a motor, preparing the motor, working the motor normally, abnormal the motor and stopping the motor; the main control module carries out corresponding processing aiming at the motor initialization state, the motor preparation state, the motor normal working state, the motor abnormal state and the motor stop state, and the processing comprises the following steps:

in the motor initialization state, the main control module performs program initialization configuration on the system;

in the motor preparation state, the main control module checks the sampling information of the data acquisition module, performs program configuration before work on the work of the motor, and jumps to the normal working state of the motor after the configuration is completed;

under the normal working state of the motor, the main control module is in normal communication with the motor and displays normal working information through the display screen module;

when the motor is in an abnormal state, the communication between the main control module and the motor is interrupted, the motor stops working, and the main control module displays fault information through the display screen module;

the main control module judges the stop of the motor in the motor stop state, and if the motor is normally stopped, the display screen module displays normal working information; and if the abnormal stop is detected, displaying fault information through the display screen module.

Technical Field

The invention relates to the technical field of electric tool control, in particular to an electric tool control system and a control method.

Background

An angle grinder, also called a grinder or a disc grinder, is a portable electric tool for cutting and grinding glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials.

The electric control part of the existing angle grinder electric tool is generally designed to control the rotating speed of a motor to be at a fixed gear, and an angle grinder works at a fixed rotating speed. In some circumstances, however, operators will use lower or higher rotational speeds depending on the environmental requirements, which is difficult to meet with current angle mills. On one hand, when the existing angle grinder works, motors all rotate along the same direction, and when some special processing requirements are met, reversing rotation is difficult to achieve; on the other hand, in the existing angle grinder, a user cannot well master the use parameters of the angle grinder when using the angle grinder, so that the condition that equipment is damaged or even safety accidents occur due to improper use is caused.

Therefore, a technique for solving this problem is urgently required.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides an electric tool control system and a control method, which display the equipment state through a display screen module, so that an operator can know the basic condition of the equipment conveniently; the speed of the equipment is adjusted through the potentiometer module; the switching of the forward and reverse rotation of the equipment can be realized through the reversing module.

The above purpose is realized by the following technical scheme:

a control system of an electric tool comprises a main control module, wherein a power supply module, a display screen module, a potentiometer module and a reversing module are respectively connected to the main control module; the reversing module comprises a U-phase line, a V-phase line and a W-phase line, one end of the reversing module is respectively connected with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end of the main control module in an inserting mode, and the other end of the reversing module is connected with the motor.

Further, still include the switch who is used for control power, host system the potentiometre module the switching-over module with the display screen module is integrated in the PCB board, the PCB board the power module with the motor passes through the casing encapsulation, switch with the display screen module with set up in the switch keyway and the display screen groove of casing match, can supply external control and observation.

Furthermore, the potentiometer module is a potentiometer with a knob, and the knob is matched with a knob groove arranged on the shell and can be externally adjusted.

Furthermore, the reversing module reverses the rotating direction of the motor by changing the plugging positions of the U-phase line, the V-phase line and the W-phase line with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end of the main control module.

Furthermore, the corresponding plugging mode of the commutation module and the U-phase terminal, the V-phase terminal and the W-phase terminal of the main control module comprises:

the first rotation direction wiring sequence is as follows: the device comprises a U-phase line, a V-phase line and a W-phase line, or a V-phase line, a W-phase line and a U-phase line, or a W-phase line, a U-phase line and a V-phase line;

the second rotation direction wiring sequence is as follows: v-phase line, U-phase line and W-phase line, or W-phase line, V-phase line and U-phase line, or U-phase line, W-phase line and V-phase line.

Furthermore, a buzzer is connected to the main control module and used for giving an audible alarm.

Further, the power module is an internal rechargeable lithium battery or an external rechargeable lithium battery.

Further, the display screen module can be an LED digital display screen or an OLED screen.

A control method of an electric tool control system is characterized in that a state machine module and a data acquisition module are arranged in a main control module, and the control method comprises the following steps:

the data acquisition module is used for acquiring working parameters of all modules in the system, and the main control module calculates and analyzes the working parameter information and then displays the working parameter information through the display screen module;

and monitoring the working state of the motor through the state machine module, and carrying out corresponding processing on different working states by the main control module and displaying a processing result through the display screen module.

Further, the operating parameters include: working temperature, working current, working voltage and motor speed.

Further, the operating state includes: the method comprises the following steps of (1) initializing a motor, preparing the motor, working the motor normally, abnormal the motor and stopping the motor; the main control module carries out corresponding processing aiming at the motor initialization state, the motor preparation state, the motor normal working state, the motor abnormal state and the motor stop state, and the processing comprises the following steps:

in the motor initialization state, the main control module performs program initialization configuration on the system;

in the motor preparation state, the main control module checks the sampling information of the data acquisition module, performs program configuration before work on the work of the motor, and jumps to the normal working state of the motor after the configuration is completed;

under the normal working state of the motor, the main control module is in normal communication with the motor and displays normal working information through the display screen module;

when the motor is in an abnormal state, the communication between the main control module and the motor is interrupted, the motor stops working, and the main control module displays fault information through the display screen module;

the main control module judges the stop of the motor in the motor stop state, and if the motor is normally stopped, the display screen module displays normal working information; and if the abnormal stop is detected, displaying fault information through the display screen module.

Advantageous effects

According to the control system and the control method for the electric tool, provided by the invention, the display of the equipment state is realized through the display screen module, so that an operator can conveniently know the basic condition of the equipment; the speed of the equipment is adjusted through the potentiometer module; the switching of the forward and reverse rotation of the equipment can be realized through the reversing module. The system is simple in structure, can be conveniently and safely used by an operator, and prolongs the service life of equipment.

Drawings

FIG. 1 is a schematic diagram of a power tool control system according to the present invention;

FIG. 2 is a schematic diagram of a second form of a power tool control system according to the present invention;

FIG. 3 is a schematic diagram of a power tool control system including a status and module and a data acquisition module according to the present invention;

fig. 4 is a flowchart of a control method of the control system of the electric tool according to the present invention.

Graphic notation:

the device comprises a main control module 1, a potentiometer module 2, a display screen module 3, a power supply module 4, a power supply switch 5, a reversing module 6, a motor 7, a knob 8 and a buzzer 9.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples. The described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an electric tool control system includes a main control module 1, wherein the main control module 1 is respectively connected with a power module 4, a display screen module 3, a potentiometer module 2 and a commutation module 6; the reversing module 6 comprises a U-phase line, a V-phase line and a W-phase line, one end of the reversing module is respectively connected with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end of the main control module in an inserting mode, and the other end of the reversing module is connected with the motor 7.

For the convenience of control, still including the switch 5 that is used for control power 4, in this embodiment host system 1 potentiometer module 2 switching-over module 6 with display screen module 3 all integrates in a PCB board, the PCB board power module 4 with motor 7 passes through the casing encapsulation (reserve on the casing and have the pivot hole that supplies motor pivot to run through, be convenient for with the installation in control of outside gear assembly), switch 5 with display screen module 3 with open and locate the switch keyway and the display screen groove of casing match, can supply opening and closing of operator external control equipment to and observe the real-time status of equipment through display screen module 3.

The potentiometer module 2 is a potentiometer with a knob 8, and the knob 8 is matched with a knob groove arranged on the shell and can be externally adjusted by an operator to realize control of the rotating speed.

In the system, the reversing module 6 can realize reversing control on the rotating direction of the motor 7 by changing the plugging positions of the U-phase line, the V-phase line and the W-phase line with the U-phase wiring end, the V-phase wiring end and the W-phase wiring end on the main control module 1. Specifically, the connection modes of the commutation module 6 and the U-phase terminal, the V-phase terminal and the W-phase terminal of the main control module 1 are as follows:

the first rotation direction wiring sequence is as follows: the device comprises a U-phase line, a V-phase line and a W-phase line, or a V-phase line, a W-phase line and a U-phase line, or a W-phase line, a U-phase line and a V-phase line;

the second rotation direction wiring sequence is as follows: v-phase line, U-phase line and W-phase line, or W-phase line, V-phase line and U-phase line, or U-phase line, W-phase line and V-phase line.

The above-mentioned "first rotation direction" and "second rotation direction" are only used to distinguish that both belong to two different rotation directions.

As shown in fig. 2, as a further optimization of this embodiment, in order to prevent the attention of the operator from not focusing on the display screen during the actual operation, a buzzer 9 is further connected to the main control module 1 in the system, and is used for performing an audio alarm on the emergency state, so that dual safety protection can be achieved.

In this embodiment, the power module 4 may be an internal rechargeable lithium battery directly packaged in the cavity inside the housing, or an external rechargeable lithium battery directly plugged into the power socket of the device when in use.

The display screen module 3 can be an LED digital display screen or an OLED screen.

As shown in fig. 3 and 4, according to the above system, this embodiment further provides a control method of an electric tool control system, in which a state machine module and a data acquisition module are built in the main control module 1, and the control method is as follows:

working parameters of each module in the system are acquired through the data acquisition module, and the working parameter information is calculated and analyzed by the main control module 1 and then displayed through the display screen module 3;

the working state of the motor 7 is monitored through the state machine module, the main control module 1 carries out corresponding processing aiming at different working states, and a processing result is displayed through the display screen module 3.

The working parameters comprise: working temperature, working current, working voltage, motor speed and the like.

The above-mentioned operating condition includes:

the method comprises the following steps of (1) initializing a motor, preparing the motor, working the motor normally, abnormal the motor and stopping the motor;

the main control module performs corresponding processing on the motor initialization state, the motor preparation state, the motor normal working state, the motor abnormal state and the motor stop state, specifically as follows:

in the motor initialization state, the main control module 1 performs program initialization configuration on a system;

in a motor preparation state, the main control module 1 checks the sampling information of the data acquisition module, performs program configuration before work on the work of the motor 7, and jumps to a normal motor working state after the configuration is completed;

under the normal working state of the motor, the main control module 1 and the motor 7 are in normal communication, and normal working information is displayed through the display screen module 3;

in an abnormal state of the motor, the communication between the main control module 1 and the motor 7 is interrupted, the motor 7 stops working, and the main control module 1 displays fault information through the display screen module 5;

in the motor stop state, the main control module 1 judges the stop of the motor 7, and if the motor is normally stopped, the display screen module 3 displays normal working information; and if the abnormal stop is detected, displaying fault information through the display screen module 3.

The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be understood by those skilled in the art that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.