阅读说明：本技术 一种多功能电动液压管件加工工具的控制系统及方法 (Control system and method of multifunctional electric hydraulic pipe fitting machining tool ) 是由 蒋友荣 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种多功能电动液压管件加工工具的控制系统及方法,包括数据采集单元,用于采集电机电流、泄压阀状态和电机温度,与控制模块连接；检测单元,用于检测供电单元的电池温度信息和电池电压信息,与控制模块连接；控制模块,根据数据采集单元和检测单元传递的数据信息控制电机的启动和停止,根据电机的启停次数,控制电机进行正转或反转；供电单元,为数据采集单元、检测单元和控制模块供电；本发明通过设置多个数据采集单元和检测单元,对电机以及电池的各项信息进行检测,可迅速了解液压胀管器是否出现异常,有效保护液压胀管器的内部结构安全,提高装置的安全防护能力。(The invention discloses a control system and a control method of a multifunctional electric hydraulic pipe fitting machining tool, wherein the control system comprises a data acquisition unit, a control module and a data processing unit, wherein the data acquisition unit is used for acquiring motor current, pressure relief valve state and motor temperature and is connected with the control module; the detection unit is used for detecting the battery temperature information and the battery voltage information of the power supply unit and is connected with the control module; the control module controls the starting and stopping of the motor according to the data information transmitted by the data acquisition unit and the detection unit, and controls the motor to rotate forwards or backwards according to the starting and stopping times of the motor; the power supply unit supplies power to the data acquisition unit, the detection unit and the control module; according to the invention, by arranging the plurality of data acquisition units and the plurality of detection units, various information of the motor and the battery is detected, whether the hydraulic tube expander is abnormal or not can be rapidly known, the safety of the internal structure of the hydraulic tube expander is effectively protected, and the safety protection capability of the device is improved.)

1. A control system for a multi-functional electro-hydraulic pipe machining tool, comprising:

the data acquisition unit is used for acquiring the current of the motor, the state of the pressure release valve and the temperature of the motor and is connected with the control module;

the detection unit is used for detecting the battery temperature information and the battery voltage information of the power supply unit and is connected with the control module;

the control module controls the starting and stopping of the motor according to the data information transmitted by the data acquisition unit and the detection unit, and controls the motor to rotate forwards or backwards according to the starting and stopping times of the motor;

and the power supply unit supplies power to the data acquisition unit, the detection unit and the control module.

2. The control system of a multi-functional electro-hydraulic pipe machining tool of claim 1,

the data acquisition unit comprises a motor current acquisition unit, a pressure relief valve state acquisition unit and a motor temperature detection unit, the motor current acquisition unit is used for acquiring current information of the motor, the motor current acquisition unit is connected with the control module, the pressure relief valve state acquisition unit is used for acquiring the opening and closing state of the pressure relief valve, the pressure relief valve state acquisition unit is connected with the control module, the motor temperature detection unit is used for acquiring temperature information of the motor, and the motor temperature detection unit is connected with the control module.

3. The control system of a multi-functional electro-hydraulic pipe machining tool of claim 1,

the detection unit comprises a battery temperature detection unit, a battery ID detection unit and a battery voltage detection unit, the battery temperature detection unit is used for detecting the temperature information of the battery, the battery temperature detection unit is connected with the control module, the battery ID detection unit is used for detecting the ID information of the battery pack, the battery ID detection unit is connected with the control module, the battery voltage detection unit is used for detecting the voltage of the battery, and the battery voltage detection unit is connected with the control module.

4. The control system of a multifunctional electro-hydraulic pipe machining tool of claim 1, 2 or 3,

the motor short-circuit protection device is characterized by further comprising a motor short-circuit protection unit and a motor driving unit, wherein the motor short-circuit protection unit is connected with the control module, the motor short-circuit protection unit is used for cutting off a power supply circuit of the motor when the motor is in a short circuit, and the control module controls the motor to be started or stopped through the motor driving unit.

5. The control system of a multi-functional electro-hydraulic pipe machining tool of claim 1,

the motor control device is characterized by further comprising a display module, wherein the display module is used for displaying battery electric quantity information and motor start-stop information and is connected with the control module.

6. The control system of a multi-functional electro-hydraulic pipe machining tool of claim 5,

the display module includes battery power indicating unit and pilot lamp, battery power indicating unit and pilot lamp all are connected with control module, battery power indicating unit is used for showing the electric quantity information of battery, the pilot lamp includes motor operation number of times pilot lamp and status indicator lamp, motor operation number of times pilot lamp carries out the demonstration of motor operation number of times through the form of binary code, the status indicator lamp shows different fault information through the scintillation of different frequencies.

7. The control system of a multi-functional electro-hydraulic pipe machining tool of claim 1,

still include light and light control unit, light and light control unit all are connected with control module, through the switching of light control unit control light.

8. A control method of a multifunctional electro-hydraulic pipe machining tool, which is applied to the control system of the multifunctional electro-hydraulic pipe machining tool as claimed in any one of claims 1 to 7, characterized by comprising the steps of:

s1: triggering a starting button, detecting whether the battery voltage is in a set threshold range, if so, displaying the battery power by a battery power indicating unit and entering a step S2, otherwise, flashing the battery power indicating unit and a status indicator lamp at a first frequency, and stopping flashing after lasting a seconds;

s2: detecting ID information of the battery pack, judging whether the ID of the battery pack is in the battery pack type authorized to be registered, if so, entering step S3, otherwise, flashing the status indicator lamp at a second frequency, and stopping flashing after lasting for b seconds;

s3: detecting whether the temperatures of the motor and the battery are in a set threshold range, if so, entering step S4, otherwise, flashing the status indicator lamp at a third frequency, and stopping flashing after lasting c seconds;

s4: detecting whether the motor runs, if so, stopping the motor when a starting switch is pressed, otherwise, entering the step S5;

s5: detecting whether the storage times of the motor operation time indication lamp is an odd number, if so, controlling the motor to rotate forwards, and controlling the state indication lamp to be normally on, otherwise, controlling the motor to rotate backwards, and controlling the state indication lamp to be normally on;

s6: detecting whether the fluctuation of the current of the motor is less than K amperes within T time, if so, entering step S7, otherwise, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after d seconds;

s7: detecting whether the continuous operation time of the motor reaches Y seconds, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S8;

s8: detecting whether the current of the motor exceeds a set threshold range, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S9;

s9: detecting whether the current of the motor is larger than the short-circuit current of the motor, if so, controlling the motor to stop, flashing the state indicator lamp at a fifth frequency, and stopping flashing after lasting f seconds; otherwise, go to step S10;

s10: and (4) acquiring the opening and closing state of the pressure relief valve, if the pressure relief valve is opened, stopping the motor, turning off the state indicating lamp, adding one to the storage frequency of the motor operation frequency indicating lamp, and otherwise, returning to the step S6.

9. The control method of a multifunctional electro-hydraulic pipe machining tool of claim 8,

and detecting whether the current of the motor drops sharply, and if so, stopping the motor.

Technical Field

The invention relates to the technical field of automatic control, in particular to a control system and a control method of a multifunctional electric hydraulic pipe fitting machining tool.

Background

The electric control process of a common electric hydraulic tool comprises the following steps: continuously pressing a starting button, starting a motor, working a plunger pump, increasing the pressure of a hydraulic cavity, reaching the pressure relief pressure of a pressure relief valve, reducing the pressure of the hydraulic cavity, suddenly reducing the load of the motor, detecting the sudden reduction of the current of the motor, and stopping the motor; (if the start button is released during operation, the motor is shut down), safety is inadequate in the event of an anomaly in the machine.

The prior art has the following technical problems:

1. conventional electronic hydraulic pressure expand tube instrument need continuously press on start button, and the full working process need keep pressing the state always, for guaranteeing the travelling comfort of using for a long time, and the button can be designed bigger, and more outstanding organism, occupation space is more, also is pressed by accident easily and is leaded to the mistake to start.

2. Problems occurring in the mechanism cannot be detected, and protection cannot be performed when the mechanism has problems. If the hydraulic one-way valve or the pressure release valve is sealed and leaks badly, the pressure can not reach the opening pressure of the pressure release valve all the time, and the motor can not automatically stop when continuously working. If the pressure relief valve fails to be normally opened, the motor continuously works, the pressure continuously rises, and the hydraulic cavity or the sealing element is damaged.

3. The unidirectional rotation work of the motor causes unidirectional abrasion of moving parts such as a speed reducing mechanism, a driving structure, a plunger and the like, and the service life of parts is reduced.

4. The lighting lamp is started in the whole running process of the machine, and electric quantity is wasted.

For example, chinese patent CN201320062039.7 discloses a hydraulic tube expander control system. The hydraulic pipe expander control system is reasonable in design, simple to operate, and degree of automation is high, nevertheless can't carry out effective monitoring and safety protection to machine trouble, leads to the life decline of hydraulic pipe expander instrument.

Disclosure of Invention

The invention mainly solves the problem of poor safety protection when the pipe fitting tool is abnormal in the prior art; the control system and the control method of the multifunctional electric hydraulic pipe fitting machining tool are provided, the abnormity monitoring capability of the pipe pressing and expanding tool is improved, the safety protection capability of the pipe pressing and expanding tool is improved, the abrasion in the device is reduced, and the service life of the device is prolonged.

The technical problem of the invention is mainly solved by the following technical scheme: a control system of a multifunctional electric hydraulic pipe fitting machining tool comprises a data acquisition unit, a control module and a data processing unit, wherein the data acquisition unit is used for acquiring motor current, pressure relief valve states and motor temperature and is connected with the control module; the detection unit is used for detecting the battery temperature information and the battery voltage information of the power supply unit and is connected with the control module; the control module controls the starting and stopping of the motor according to the data information transmitted by the data acquisition unit and the detection unit, and controls the motor to rotate forwards or backwards according to the starting and stopping times of the motor; and the power supply unit supplies power to the data acquisition unit, the detection unit and the control module. Through setting up data acquisition unit and detecting element, carry out real-time supervision to the motor and the battery of hydraulic pressure expand tube instrument, when data appear unusually, corresponding reaction is made to the very first time, protects the safety of hydraulic pressure expand tube instrument, prevents that hydraulic pressure expand tube instrument from working in the abnormal conditions, reduces the wearing and tearing volume of device, improves the life of device.

Preferably, the data acquisition unit includes a motor current acquisition unit, a pressure relief valve state acquisition unit and a motor temperature detection unit, the motor current acquisition unit is used for acquiring current information of the motor, the motor current acquisition unit is connected with the control module, the pressure relief valve state acquisition unit is used for acquiring the open-close state of the pressure relief valve, the pressure relief valve state acquisition unit is connected with the control module, the motor temperature detection unit is used for acquiring temperature information of the motor, and the motor temperature detection unit is connected with the control module. Different acquisition units respectively acquire different data volumes, and the division of labor is clear and high in efficiency.

Preferably, the detection unit includes a battery temperature detection unit, a battery ID detection unit and a battery voltage detection unit, the battery temperature detection unit is used for detecting temperature information of the battery, the battery temperature detection unit is connected with the control module, the battery ID detection unit is used for detecting ID information of the battery pack, the battery ID detection unit is connected with the control module, the battery voltage detection unit is used for detecting voltage of the battery, and the battery voltage detection unit is connected with the control module. Different detection units respectively detect different data volumes, the labor division is clear, and the efficiency is high.

Preferably, the motor short-circuit protection device further comprises a motor short-circuit protection unit and a motor driving unit, the motor short-circuit protection unit is connected with the control module, the motor short-circuit protection unit is used for cutting off a power supply circuit of the motor when the motor is in short circuit, and the control module controls starting and stopping of the motor through the motor driving unit. The motor is subjected to circuit breaking treatment when the motor is in short circuit through the motor short-circuit protection unit, so that the motor is powered off, and the machine is prevented from continuously working and further being damaged.

Preferably, the motor control device further comprises a display module, wherein the display module is used for displaying battery power information and motor start-stop information, and the display module is connected with the control module. Human-computer interaction is carried out through the display module, and the operation is more convenient.

Preferably, the display module comprises a battery power indicating unit and an indicator light, the battery power indicating unit and the indicator light are both connected with the control module, the battery power indicating unit is used for displaying power information of the battery, the indicator light comprises a motor running time indicator light and a state indicator light, the motor running time indicator light displays the running time of the motor in a binary code mode, and the state indicator light displays different fault information through flickering at different frequencies. The running times of the motor are displayed in a binary code mode, a liquid crystal mode is not needed for displaying, and the hardware cost is effectively reduced.

Preferably, the intelligent lighting system further comprises a lighting lamp and a lighting lamp control unit, wherein the lighting lamp and the lighting lamp control unit are connected with the control module, and the lighting lamp control unit controls the lighting lamp to be turned on or off. Set up solitary light control unit, carry out the independent control when using the light and open, reduce the electric quantity waste of light.

A control method of a multifunctional electric hydraulic pipe fitting machining tool comprises the following steps:

s1: triggering a starting button, detecting whether the battery voltage is in a set threshold range, if so, displaying the battery power by a battery power indicating unit and entering a step S2, otherwise, flashing the battery power indicating unit and a status indicator lamp at a first frequency, and stopping flashing after lasting a seconds;

s2: detecting ID information of the battery pack, judging whether the ID of the battery pack is in the battery pack type authorized to be registered, if so, entering step S3, otherwise, flashing the status indicator lamp at a second frequency, and stopping flashing after lasting for b seconds;

s3: detecting whether the temperatures of the motor and the battery are in a set threshold range, if so, entering step S4, otherwise, flashing the status indicator lamp at a third frequency, and stopping flashing after lasting c seconds;

s4: detecting whether the motor runs, if so, stopping the motor when a starting switch is pressed, otherwise, entering the step S5;

s5: detecting whether the storage times of the motor operation time indication lamp is an odd number, if so, controlling the motor to rotate forwards, and controlling the state indication lamp to be normally on, otherwise, controlling the motor to rotate backwards, and controlling the state indication lamp to be normally on;

s6: detecting whether the fluctuation of the current of the motor is less than K amperes within T time, if so, entering step S7, otherwise, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after d seconds;

s7: detecting whether the continuous operation time of the motor reaches Y seconds, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S8;

s8: detecting whether the current of the motor exceeds a set threshold range, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S9;

s9: detecting whether the current of the motor is larger than the short-circuit current of the motor, if so, controlling the motor to stop, flashing the state indicator lamp at a fifth frequency, and stopping flashing after lasting f seconds; otherwise, go to step S10;

s10: and (4) acquiring the opening and closing state of the pressure relief valve, if the pressure relief valve is opened, stopping the motor, turning off the state indicating lamp, adding one to the storage frequency of the motor operation frequency indicating lamp, and otherwise, returning to the step S6.

After the motor is operated and stopped once, the motor is started again, the operation direction of the motor is reversed, and when the motor continuously works, the abrasion of each transmission mechanism, the driving structure and the plunger piston can be more balanced, and the service life of parts is prolonged.

Preferably, the method further comprises detecting whether the motor current is rapidly reduced, and if so, stopping the motor. Abnormality detection is performed by current change.

The invention has the beneficial effects that: by arranging a plurality of data acquisition units and detection units, various information of the motor and the battery is detected, whether the hydraulic tube expander is abnormal or not can be rapidly known, and corresponding processing is carried out on different abnormal conditions, so that the safety of the internal structure of the hydraulic tube expander is effectively protected, and the safety protection capability of the device is improved; the automatic alternate forward and reverse rotation function of the motor is arranged, so that each transmission mechanism, the driving structure and the plunger of the motor can be worn more uniformly when the motor continuously works, the service life of parts is prolonged, and the safety in the pipe fitting machining process is improved.

Drawings

Fig. 1 is a block diagram of an automatic control system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a hydraulic valve opening pressure normal state of the embodiment of the invention.

Fig. 3 is a schematic diagram of the hydraulic valve in an excessively low opening pressure state according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of the hydraulic valve in an excessively high opening pressure state according to the embodiment of the present invention.

FIG. 5 is a schematic diagram of the force applied to the gear in the forward and reverse rotation states of the motor according to the embodiment of the present invention.

In the figure, 1, a single chip microcomputer, 2, a power supply unit, 3, a battery electric quantity indicating unit, 4, a lighting lamp, 5, an indicating lamp, 6, a motor current acquisition unit, 7, a motor short-circuit protection unit, 8, a motor driving unit, 9, a lighting lamp control unit, 10, a pressure relief valve state acquisition unit, 11, a battery temperature detection unit, 12, a battery ID detection unit, 13, a battery voltage detection unit, 14, a motor temperature detection unit, 15, a bearing, 16, an eccentric wheel, 17, a motor forward rotation gear stress area, 18, a motor reverse rotation gear stress area.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b): a control system of a multifunctional electric hydraulic pipe fitting machining tool is shown in figure 1 and comprises a data acquisition unit, a control module and a data processing unit, wherein the data acquisition unit is used for acquiring motor current, pressure relief valve states and motor temperature and is connected with the control module; the detection unit is used for detecting the ID information of the battery pack of the power supply unit, the battery temperature information and the battery voltage information of the power supply unit and is connected with the control module; the display module is used for displaying the battery electric quantity information and the motor start-stop information and is connected with the control module; the control module controls the starting and stopping of the motor according to the data information transmitted by the data acquisition unit and the detection unit, and controls the motor to rotate forwards or backwards according to the starting and stopping times of the motor; power supply unit 2, for the data acquisition unit, the detecting element, display module and control module power supply, motor short-circuit protection unit 7 and motor drive unit 8, motor short-circuit protection unit is connected with control module, motor short-circuit protection unit is used for cutting off the supply circuit of motor when the motor short circuit, control module passes through opening and stopping of motor drive unit control motor, light 4 and light the control unit 9, light 4 and light the control unit all are connected with control module, switching through light the control unit control light. The pipe fitting machining tool is mainly used for machining pipe expanding, pipe expanding and pressing pipes, and the machining tool and the pipe fitting are controlled in the machining process, so that ordered work of pipe fitting machining is realized.

The control module adopted by the invention is a singlechip 1, the power supply unit comprises a power supply module and a power supply battery, the power supply battery consists of a plurality of battery packs, the illuminating lamp control unit is a mechanical key, the illuminating lamp is controlled to be on by pressing the mechanical key, the mechanical key is pressed again, the mechanical key is bounced, and the illuminating lamp is turned off.

The data acquisition unit comprises a motor current acquisition unit 6, a pressure release valve state acquisition unit 10 and a motor temperature detection unit 14, the motor current acquisition unit is used for acquiring current information of the motor, the motor current acquisition unit is connected with the control module, the pressure release valve state acquisition unit is used for acquiring the opening and closing states of the pressure release valve, the pressure release valve state acquisition unit is connected with the control module, the motor temperature detection unit is used for acquiring temperature information of the motor, and the motor temperature detection unit is connected with the control module.

The detection unit comprises a battery temperature detection unit 11, a battery ID detection unit 12 and a battery voltage detection unit 13, the battery temperature detection unit is used for detecting the temperature information of the battery, the battery temperature detection unit is connected with the control module, the battery ID detection unit is used for detecting the ID information of the battery pack, the battery ID detection unit is connected with the control module, the battery voltage detection unit is used for detecting the voltage of the battery, and the battery voltage detection unit is connected with the control module.

The display module includes battery power indicating unit 3 and pilot lamp 5, battery power indicating unit and pilot lamp all are connected with control module, battery power indicating unit is used for showing the electric quantity information of battery, the pilot lamp includes motor operation number of times pilot lamp and status indicator lamp, the motor operation number of times pilot lamp carries out the demonstration of motor operation number of times through the form of binary code, the status indicator lamp shows different fault information through the scintillation of different frequencies.

The motor running time indicator lamp and the state indicator lamp can be different indicator lamps in the physical sense, and can also be the same indicator lamp, and the motor running time indicator lamp and the state indicator lamp have two functions through different program settings.

A control method of a multifunctional electric hydraulic pipe fitting machining tool comprises the following steps:

s1: triggering a starting button, detecting whether the battery voltage is in a set threshold range, if so, displaying the battery power by a battery power indicating unit and entering a step S2, otherwise, flashing the battery power indicating unit and a status indicator lamp at a first frequency, and stopping flashing after lasting a seconds; the circuit board can detect battery package voltage when the start, if battery package voltage is higher than or be less than when permitting the voltage, the machine can not start and through the scintillation of signal lamp and warn, avoids the maloperation to lead to the machine to damage when production detects, can avoid the battery package to put and lead to the operation process to shut down unusually and damage the battery.

S2: detecting ID information of the battery pack, judging whether the ID of the battery pack is in the battery pack type authorized to be registered, if so, entering step S3, otherwise, flashing the status indicator lamp at a second frequency, and stopping flashing after lasting for b seconds; the battery pack detection device is provided with ID detection, the battery pack can be used only when the ID detection is met, the battery pack can be flashed by a signal lamp when the ID detection is failed, misuse of the battery pack of other products in the market is avoided, and the service life of the battery is prolonged.

S3: detecting whether the temperatures of the motor and the battery are in a set threshold range, if so, entering step S4, otherwise, flashing the status indicator lamp at a third frequency, and stopping flashing after lasting c seconds; carry out the sampling control that lasts to battery package temperature and motor temperature, when the temperature surpassed or is less than the setting value, the machine does not start or shut down and through the scintillation of signal lamp warning, avoid using in the environment that the temperature is too high or low excessively, avoid long-time continuous work, protection battery package and drive mechanism avoid appearing damaging, when the temperature is low excessively, battery electricity core performance descends, drive mechanism's lubricating grease lubrication performance descends, rubber seal spare becomes hard and seals badly, lead to damaging easily, the high temperature can lead to electric core to have the explosion risk, lubricating grease lubrication performance descends, rubber seal spare has the softening risk.

S4: detecting whether the motor runs, if so, stopping the motor when a starting switch is pressed, otherwise, entering the step S5; the motor has an emergency stop function by starting the switch;

s5: detecting whether the storage times of the motor operation time indication lamp is an odd number, if so, controlling the motor to rotate forwards, and controlling the state indication lamp to be normally on, otherwise, controlling the motor to rotate backwards, and controlling the state indication lamp to be normally on;

s6: detecting whether the fluctuation of the current of the motor is less than K amperes within T time, if so, entering step S7, otherwise, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after d seconds;

s7: detecting whether the continuous operation time of the motor reaches Y seconds, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S8; as shown in fig. 3, when the single operation time exceeds the allowable time, the single chip controls the cut-off circuit and gives a flash alarm through the status indicator lamp, which indicates that the pressure in the hydraulic cavity cannot reach the opening pressure of the pressure release valve, indicating that the hydraulic system leaks and needs to be shut down for maintenance;

s8: detecting whether the current of the motor exceeds a set threshold range, if so, controlling the motor to stop, flashing the state indicator lamp at a fourth frequency, and stopping flashing after lasting d seconds; if not, go to step S9; the control circuit board is used for monitoring the motor current, when the motor current value exceeds the allowable current value, the circuit board can control the circuit to be cut off and give an alarm to protect the motor and a circuit system, as shown in figure 2, when the motor current is normal, the pressure of the hydraulic valve is in a normal operation curve, as shown in figure 4, when the pressure release valve is abnormal and cannot be normally opened, the pressure continuously rises to cause the motor current to be abnormal and large, and the motor can be stopped and checked in time;

s9: detecting whether the current of the motor is larger than the short-circuit current of the motor, if so, controlling the motor to stop, flashing the state indicator lamp at a fifth frequency, and stopping flashing after lasting f seconds; otherwise, go to step S10;

s10: and (4) acquiring the opening and closing state of the pressure relief valve, if the pressure relief valve is opened, stopping the motor, turning off the state indicating lamp, adding one to the storage frequency of the motor operation frequency indicating lamp, and otherwise, returning to the step S6.

After the step S1 triggers the start button, the steps S2 to S10 can be performed simultaneously without performing the detection step by step.

In another embodiment, the motor operation process further comprises detecting whether the motor current is rapidly reduced, if so, stopping the motor, turning off the status indicator lamp, and adding one to the storage time of the motor operation time indicator lamp.

The state detection of the pressure relief valve and the detection of the rapid change of the motor current can also be carried out simultaneously, when the pressure relief valve is detected to be opened or the current is detected to be rapidly reduced, the motor is stopped, the state indicator lamp is turned off, and the storage frequency of the motor operation frequency indicator lamp is increased by one.

The invention is also provided with a safe start button and an emergency stop button, the machine can be started by clicking the button under the machine halt state, the machine can be stopped suddenly by clicking the button under the machine running state, the machine can be halted at any time, the time for the finger to act on the button is short, the key can be small and hidden in the machine main body, the button can be clicked and started only by a certain subjective intention, and the accidental triggering is not easy to occur; the system can be stopped at any time by clicking a button when a quick stop is needed.

The state acquisition unit of the pressure relief valve detects the switch of the pressure relief valve by adopting the photoelectric sensor, the contact switch or the limit switch, when the pressure relief valve is opened, the photoelectric sensor, the contact switch or the limit switch is triggered, a trigger signal is transmitted to the singlechip, and the singlechip controls the motor to stop.

The invention adopts a singlechip to store the running times of the motor, 5 indicator lamps are used for displaying, the indicator lamps are displayed by binary codes, the display range is 1K-31K, the times are displayed without adopting a liquid crystal display mode, no additional hardware cost is needed, through the storage function, the invention is provided with the automatic alternate forward and reverse rotation function of the motor, the motor is started again after the motor is stopped once, the running direction of the motor is reversed, the motor is easy to abrade the gear when a bearing 15 rotates to drive an eccentric wheel 16 to move in the continuous working process, the continuous abrasion is easy to be carried out on a specific position when the motor rotates in one direction for a long time, as shown in figure 5, when the motor rotates forwards, the stressed area 17 of the forward gear of the motor is easy to abrade, when the motor rotates backwards, the stressed area 18 of the reverse gear of the motor is easy to abrade, by the automatic alternate forward and reverse rotation control of the invention, the abrasion in the mechanism is reduced, and the service life of the device is prolonged.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.