A control method and control system for a power tool

Abstract

The application discloses a control method and a control system of an electric tool, and comprises the following steps: when the switch is in an open state, obtaining a first electric signal after a closing signal of the switch is acquired, controlling the working state of the electric tool and the conduction path of the dust collecting chamber based on the first electric signal; when the switch is in a closed state, controlling the electric tool to maintain the current working state after a distance indicated by a second electric signal is less than a distance threshold; when the switch is in the closed state, obtaining the first electric signal after the distance indicated by the second electric signal is not less than the distance threshold, and controlling the working state of the electric tool and the conduction path of the dust collecting chamber based on the first electric signal. According to the multiple electric signals and the switch signal of the switch, the working state of the electric tool and the conduction path of the dust collecting chamber are controlled, the timeliness of the conduction path adjustment of the dust collecting chamber is ensured, and the accurate classification of different waste materials in the dust collecting device is realized.

Description

[Technical Field]

[0001] This invention relates to a control method and control system for power tools, particularly in the field of dust collection. [Background Technology]

[0002] Grinding tools are commonly used for surface polishing, varnish removal, and rust removal, and include a dust collection device. This device typically consists of a single dust collection chamber to collect grinding waste under different working conditions. However, a single dust collection chamber can contain various types of waste, requiring additional sorting and processing in accordance with waste sorting regulations, which is inconvenient for cleaning. Alternatively, the dust collection device can be cleaned before each adjustment of working conditions, increasing workload and making operation cumbersome. Current dust collection devices often include two or more independently located dust collection chambers. Multiple chambers facilitate the separate collection of different waste materials, and an adjustment module controls the flow path of the dust collection device, allowing waste to enter different chambers through varying flow paths. However, the adjustment module lacks sensing signals and is insensitive to different tool operations, easily causing different waste materials to accumulate in the dust collection pipes and enter other chambers, leading to inaccurate waste sorting and affecting dust collection efficiency. [Summary of the Invention]

[0003] The main objective of this invention is to provide a control method and control system for power tools, which aims to control the working state of the power tool and the conduction path of the dust collection chamber according to electrical signals, so as to achieve accurate classification of different wastes in the dust collection device and avoid mixing of different wastes in the dust collection chamber.

[0004] A first aspect of this application provides a control method for a power tool, the control method comprising: when a switch is in an open state, obtaining a first electrical signal after receiving a closing signal of the switch, and controlling the working state of the power tool and the conduction path of the dust collection chamber based on the first electrical signal; when the switch is in a closed state, controlling the power tool to maintain the current working state after obtaining a distance indicated by a second electrical signal that is less than a distance threshold; and when the switch is in a closed state, obtaining the first electrical signal after obtaining a distance indicated by the second electrical signal that is not less than the distance threshold, and controlling the working state of the power tool and the conduction path of the dust collection chamber based on the first electrical signal; wherein the first electrical signal is used to indicate the material information of the working surface, and the second electrical signal is used to indicate the distance from the power tool to the working surface.

[0005] The control method further includes: after obtaining the disconnection signal of the switch, obtaining a third electrical signal, and controlling the working state of the power tool based on the third electrical signal, wherein the third electrical signal is used to indicate whether there is material information in the dust collection pipe; if the third electrical signal indicates that there is material information in the dust collection pipe, controlling the power tool to maintain a set speed; if the third electrical signal indicates that there is no material information in the dust collection pipe, controlling the power tool to stop, and storing the material information of the working surface.

[0006] When the switch is in the open state, after obtaining the switch's closing signal, a first electrical signal is obtained. Based on the first electrical signal, the working state of the power tool and the conduction path of the dust collection chamber are controlled, including: if the material information indicated by the first electrical signal is consistent with the stored material information, the power tool is controlled to start; if the material information indicated by the first electrical signal is inconsistent with the stored material information, the conduction path of the dust collection chamber is adjusted, and the power tool is controlled to start after a set delay time.

[0007] When the switch is in the closed state, after obtaining a distance not less than the distance threshold indicated by the second electrical signal, the first electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled based on the first electrical signal, including: if the material information indicated by the first electrical signal is consistent with the stored material information, the power tool is controlled to maintain the current working state; if the material information indicated by the first electrical signal is inconsistent with the stored material information, the third electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled and adjusted based on the third electrical signal.

[0008] If the material information indicated by the first electrical signal is inconsistent with the stored material information, a third electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled and adjusted based on the third electrical signal, including: if the third electrical signal indicates that the material information exists in the dust collection pipe, the power tool is controlled to maintain the set speed; if the third electrical signal indicates that the material information does not exist in the dust collection pipe, the power tool is controlled to stop, and the material information of the working surface is stored; after the power tool stops, the conduction path of the dust collection chamber is controlled and adjusted, and the power tool is controlled to start after a set delay time.

[0009] The set time is not less than the working time required to complete the adjustment of the conduction path of the dust collection chamber.

[0010] If the flow path of the dust collection chamber is adjusted, the control prompt module generates a prompt message.

[0011] A second aspect of this application provides a control system for a power tool, the control system being used to implement the control method described in any of the preceding claims, the power tool including a dust collection chamber, the control system including: a controller, a detection module and a switch, the controller being connected to the detection module and the switch, the controller being configured to: control the working state of the power tool and / or the conduction path of the dust collection chamber according to the electrical signal of the detection module and the switching signal of the switch.

[0012] The control system further includes an adjustment module, which is connected to the controller. The controller is used to adjust the conduction path of the dust collection chamber through the adjustment module.

[0013] The power tool further includes a dust collection pipe connected to the dust collection chamber; the detection module includes a third sensor, a second sensor, and a first sensor; the third sensor is used to detect material information within the dust collection pipe to obtain a third electrical signal, which indicates whether the material information exists within the dust collection pipe; the second sensor is used to detect the distance from the power tool to the working surface to obtain a second electrical signal, which indicates the distance; the first sensor is used to detect the material information of the working surface to obtain a first electrical signal, which indicates the material information of the working surface.

[0014] This application provides a control method and control system for power tools. Based on multiple electrical signals and switch signals, the system controls the working state of the power tool and the conduction path of the dust collection chamber, ensuring timely adjustment of the dust collection chamber's conduction path and achieving precise classification of different waste materials within the dust collection device, thus preventing mixing of different waste materials in the dust collection chamber. This invention uses multiple electrical signals to detect the material of the working surface, the material in the dust collection pipeline, and the distance from the tool to the working surface to obtain current working conditions and tool status information. This allows for accurate identification of changes in the tool's working environment and position, thereby controlling the conduction path of the dust collection chamber. [Attached Image Description]

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0016] Figure 1 This is a structural schematic diagram of a sander according to the present invention;

[0017] Figure 2 This is a cross-sectional schematic diagram of a sanding machine according to the present invention;

[0018] Figure 3 This is an exploded view of a dust collection device according to the present invention;

[0019] Figure 4 yes Figure 1 The diagram shows the state changes of the baffle of the sander. Figure 4 The first dust collection chamber (A) is in a conductive state. Figure 4 B. The second dust collection chamber is in a conductive state;

[0020] Figure 5 This is a block diagram of a control system for an electric tool according to the present invention;

[0021] Figure 6 This is a flowchart of a control method for an electric tool according to the present invention.

[0022] Meaning of the reference numerals in the diagram:

[0023] Sanding machine 100, middle cover 12

[0024] Dust collection device 200 Drive assembly 2

[0025] Control system 300 Fan 21

[0026] Dust collection pipeline 201 base plate assembly 3

[0027] Dust collection chamber 202 controller 4

[0028] First dust chamber 2021 Storage unit 41

[0029] Episode 2 Dust Chamber 2022 Timing Unit 42

[0030] Adjustment module 203 Detection module 5

[0031] Switching component 2031 First sensor 51

[0032] Baffle 2032 Second sensor 52

[0033] Rolling element 2033 Third sensor 53

[0034] Connection port 204, switch 6

[0035] Casing 1, Notification Module 7

[0036] Main casing 11 Working surface 10

Detailed Implementation Methods

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0038] Please see Figures 1 to 4As shown, this application embodiment relates to a power tool, namely a sander 100, but the scope of this application is not limited to the sander 100. The sander 100 is equipped with a dust collection device 200. The sander 100 includes a housing 1, a drive assembly 2 installed in the housing 1, and a base plate assembly 3 driven by the drive assembly 2. The housing 1 includes a main housing 11 accommodating the drive assembly 2, an intermediate cover 12 connected to the main housing 11, and a controller 4 controlling the drive assembly 2. The intermediate cover 12 is located between the main housing 11 and the base plate assembly 3. The dust collection device 200 is installed on the intermediate cover 12. The sander 100 performs sanding operations under the action of a power source. The fan 21 in the drive assembly 2 rotates in the main housing 11 to generate suction air pressure for dust collection, thereby sucking the generated debris, dust, etc. into the sander 100 through the suction port (not shown) opened on the base plate assembly 3, and then discharging them into the dust collection device 200. Driven by a power source, the system performs driving operations and generates suction pressure through fan rotation to collect dust. The dust collection device contains working debris, preventing debris from flowing in the air and causing environmental pollution and respiratory discomfort to humans, thus protecting the environment and human health to a certain extent.

[0039] The dust collection device 200 includes a dust collection pipe 201 connected to the intermediate cover 12, a dust collection chamber 202 installed in the dust collection pipe 201, and an adjustment module 203 located between the dust collection pipe 201 and the dust collection chamber 202. Preferably, the dust collection chamber 202 has a first dust collection cavity 2021 and a second dust collection cavity 2022 that are independently arranged. The adjustment module 203 is used to adjust the conduction path of the dust collection chamber 202. Furthermore, the controller 4 controls the adjustment module 203 to move to adjust the conduction path of at least one of the first dust collection cavity 2021 and the second dust collection cavity 2022. The controller 4 can control the conduction path of the first dust collection cavity 2021 of the dust collection chamber 202 to be in a conducting state while the conduction path of the second dust collection cavity 2022 is in a closed state (e.g., ...). Figure 4 As shown in Figure A), that is, the adjustment module 203 is in the first position; or while controlling the conduction path of the first dust collection chamber 2021 of the dust collection chamber 202 to be in the closed state, the conduction path of the second dust collection chamber 2022 is in the open state (e.g., Figure 4 As shown in Figure B, the adjustment module 203 is in the second position. The first dust collection chamber 2021 and the second dust collection chamber 2022 can be used to classify and store grinding waste materials such as wood chips and iron chips from the sander 100. By adjusting the guide path of the dust collection chamber, the grinding waste can enter the corresponding dust collection chamber, avoiding mixing of different waste materials in the chamber and facilitating the emptying and cleaning of the dust collection device.

[0040] Specifically, the adjustment module 203 includes a switching component 2031 installed in the dust collection pipeline 201, a baffle 2032 connected to the switching component, and a rolling element 2033 disposed between the switching component 2032 and the baffle 2032. The rolling element 2033 guides the baffle 2032 to rotate freely within the switching component 2031. This simple structure fulfills the user's need for classified dust collection of waste generated by the sander 100. It should be noted that the baffle 2032 is semi-circular, and the dust collection pipeline 201 also has a connection port 204 installed in the intermediate cover 12. The diameter of the baffle 2032 is larger than the diameter of the connection port 204, which prevents leakage during grinding waste collection, thus avoiding the inability to classify the waste into specific dust collection chambers and achieving the user's desired classified dust collection effect.

[0041] Please see Figure 5 The diagram illustrates a control system 300 for a power tool, as per the present invention. The power tool can be a sander, grinder, etc. The control system 300 includes a controller 4, a detection module 5, and a switch 6. The controller 4 is connected to the detection module 5 and the switch 6. The controller 4 acquires electrical signals from the detection module 5 and switching signals from the switch 6. The controller 4 controls the power tool based on the electrical signals from the detection module 5 and the switching signals from the switch 6. The control system 300 also includes an adjustment module 203 connected to the controller 4. The adjustment module 203 adjusts the conduction path of the dust collection chamber 202. The controller 4 is configured to control the working state of the power tool and / or control the conduction path of the dust collection chamber 202 through the adjustment module 203 based on the electrical signals from the detection module 5 and the switching signals from the switch 6. By setting the switch and detection module signals to acquire tool information, controlling tool operation and the conduction path of the dust collection chamber, and understanding user operation information from multiple perspectives, the adjustment module can more accurately control the conduction path.

[0042] The detection module 5 includes: a third sensor 53, which detects the material information within the dust collection pipe 201 and obtains a third electrical signal, which indicates whether the material information exists within the dust collection pipe 201; a second sensor 52, which detects the distance from the power tool to the working surface 10 and obtains a second electrical signal, which indicates the distance; and a first sensor 51, which detects the material information of the working surface 10 and obtains a first electrical signal, which indicates the material information of the working surface 10. The material information includes the material of any grinding waste that may be involved in the power tool's operation or any material other than the dust collection pipe 201. Multiple sensors, acting as a detection module, can be configured according to the material information and the tool's position information, avoiding inaccurate tool detection information under complex operating conditions.

[0043] The control system 300 further includes a prompting module 7, which is connected to the controller 4. The prompting module 7 is used to provide a notification when the flow path adjustment of the dust collection chamber 202 is completed. The controller 4 acquires the adjustment information of the adjustment module 203 and controls the prompting module 7 to provide the notification based on the adjustment information. The prompting module can be an indicator light, a buzzer, etc., and the notification method is not limited to flashing indicator lights or buzzer alarms. Providing a notification when the flow path adjustment of the dust collection chamber is completed prevents damage to the adjustment module, which could lead to the inability to complete the flow path adjustment, resulting in power tools not starting for extended periods and affecting work efficiency.

[0044] Please see Figure 6 The diagram shows a flowchart of a control method for a power tool according to the present invention. The control method includes: if a switch 6 is in an open state, after receiving a closing signal of the switch 6, obtaining a first electrical signal, so as to control the working state of the power tool and the conduction path of the dust collection chamber 202 based on the first electrical signal; if a second electrical signal is received indicating a distance less than a distance threshold when the switch 6 is in a closed state, controlling the power tool to maintain the current working state; if a second electrical signal is received indicating a distance not less than the distance threshold when the switch 6 is in a closed state, obtaining the first electrical signal, so as to control the working state of the power tool and the conduction path of the dust collection chamber 202 based on the first electrical signal.

[0045] The third sensor 53 detects the material information within the dust collection pipe 201 to obtain the third electrical signal, which indicates whether the material information exists within the dust collection pipe 201. The second sensor 52 detects the distance from the power tool to the working surface 10 to obtain the second electrical signal, which indicates the distance. The first sensor 51 detects the material information of the working surface 10 to obtain the first electrical signal, which indicates the material information of the working surface 10. Specifically, the second sensor 52 is located near the base plate assembly 3 and can be used to detect the distance from the base plate assembly 3 to the working surface 10. Based on the operating conditions of the power tool during operation and combined with the detection module information, reasonable control logic is set to achieve electronic control adjustment of the dust collection chamber's conduction path, compensating for the deficiencies in the control logic of the dust collection device's classification.

[0046] The control method further includes: if an open signal of switch 6 is obtained, obtaining the third electrical signal to control the working state of the power tool based on the third electrical signal. The step of obtaining the third electrical signal after obtaining an open signal of switch 6 to control the working state of the power tool based on the third electrical signal includes: the controller 4 obtaining the switch signal of switch 6, the switch signal including a closed signal and an open signal; if the controller 4 obtains the open signal of switch 6, controlling the power tool to brake slowly and reduce to a set speed; the third sensor 53 detecting material information in the dust collection pipe 201 and obtaining the third electrical signal; if the third electrical signal indicates that there is material information in the dust collection pipe 201, the controller 4 controlling the power tool to maintain the set speed; if the third electrical signal indicates that there is no material information in the dust collection pipe 201, the controller 4 controlling the power tool to stop and storing the material information of the working surface 10 currently detected by the first sensor 51. During the gradual braking process of the power tool to a stop, the power tool maintains a slow deceleration to avoid sudden braking that could cause the tool to slip out of the user's hand. The braking method is not limited to braking at a certain deceleration speed. After the switch is turned off, the power tool is controlled to brake gradually to prevent the tool from becoming unstable due to high-speed operation and causing personal injury to the user. Furthermore, when there is material in the dust collection pipe, low-speed operation is selected to save power. Maintaining the set speed when there is material in the dust collection pipe prevents grinding waste from remaining in the dust collection pipe when the motor stops, thus preventing waste from being spilled when disassembling the dust collection device, or preventing residual grinding waste from entering another dust collection chamber through the adjusted conduction path of the dust collection chamber, causing waste mixing. This improves the safety performance of the tool and ensures the feasibility of waste sorting and cleaning.

[0047] If the closing signal of switch 6 is obtained, a first electrical signal is acquired to control the working state of the power tool and the conduction path of the dust collection chamber 202 based on the first electrical signal. This includes: the controller 5 acquiring the closing signal of switch 6; the first sensor 51 detecting the material information of the working surface 10 and acquiring the first electrical signal; if the material information indicated by the first electrical signal is consistent with the material information stored by the controller 4 when the power tool is stopped, the controller 4 controls the power tool to start immediately; if the material information indicated by the first electrical signal is inconsistent with the stored material information, the conduction path of the dust collection chamber 202 is adjusted, and the power tool is started after a set delay, storing the material information of the working surface detected by the first sensor 51 at this time. The starting method is not limited to soft start, etc. The set delay time before the power tool starts is not less than the working time required for the conduction path of the dust collection chamber 202 to be adjusted. When the switch changes from open to closed, the current material information is compared with the material information stored when the power tool is stopped. The adjustment of the dust collection chamber's conduction path is completed before the power tool is started. If it is determined that the conduction path needs to be adjusted, a delay start time is set to allow time for the conduction path adjustment, so as to avoid the mixing of grinding waste in the chamber due to incomplete adjustment.

[0048] If, when the switch 6 is closed, the distance indicated by the second electrical signal is not less than a distance threshold, the first electrical signal is obtained to control the working state of the power tool and the conduction path of the dust collection chamber 202 based on the first electrical signal. This includes: in the operating state of the power tool, the second sensor 52 detects the distance from the power tool to the working surface 10 and obtains the second electrical signal; if the distance indicated by the second electrical signal is less than the distance threshold, the power tool is controlled to maintain the current working state; if the distance indicated by the second electrical signal is not less than the distance threshold, the first sensor 51 detects the material information of the working surface 10 and obtains the first electrical signal; if the material information indicated by the first electrical signal is consistent with the previously stored material information, the controller 4 controls the power tool to maintain the current working state; if the material information indicated by the first electrical signal is inconsistent with the previously stored material information, the controller 4 controls and adjusts the working state of the power tool and the conduction path of the dust collection chamber 202. During the operation of the power tool, the distance between the power tool and the working surface is detected by the second sensor to obtain the position of the power tool. When the power tool is detected to have detached from the working surface, the material of the working surface is re-detected. When the material of the working surface changes, the change of grinding waste is predicted, and the guide path of the dust collection chamber is adjusted by the adjustment module to avoid maintaining the same guide path when the material of the working surface changes, which would cause different grinding waste to enter the same dust collection chamber, thus achieving precise control of the guide path adjustment.

[0049] If the material information indicated by the first electrical signal is inconsistent with the previously stored material information, the controller 4 controls and adjusts the working state of the power tool and the conduction path of the dust collection chamber 202, including: the controller 4 controls the power tool to brake slowly and reduce to a set speed; the third sensor 53 detects the material information in the dust collection pipe 201 and obtains the third electrical signal; if the third electrical signal indicates that the material information exists in the dust collection pipe 201, the controller 4 controls the power tool to maintain the set speed; if the third electrical signal indicates that the material information does not exist in the dust collection pipe 201, the controller 4 controls the power tool to stop and stores the material information of the working surface 10 currently detected by the first sensor 51. The system controls the power tool to brake gently, preventing instability caused by high-speed operation and potential personal injury. It also selects low-speed operation when there is material in the dust collection pipe, saving electricity. Maintaining the set speed while the dust collection pipe is still present prevents grinding waste from remaining when the motor stops, thus avoiding waste spillage during disassembly of the dust collection device. It also prevents residual grinding waste from entering another dust collection chamber through the adjusted conduit path, thus improving tool safety and ensuring the feasibility of waste sorting and cleaning.

[0050] The controller 4 controls the adjustment module 203 to adjust the conduction path of the dust collection chamber 202, and controls the power tool to start after a set delay. If the adjustment module 203 completes the adjustment of the conduction path of the dust collection chamber 202, the controller 4 controls the prompting module 7 to issue a prompt. The set time is not less than the working time required to complete the adjustment of the conduction path of the dust collection chamber 202. When it is determined that the conduction path needs to be adjusted, a delay start time is set to allow time for the adjustment, avoiding incomplete adjustment and resulting mixing of grinding waste in the chamber.

[0051] Please see Figure 5As shown, the controller 4 further includes a storage unit 41, which stores the material information of the working surface 10. When the material information indicated by the first electrical signal is inconsistent with the previously stored material information of the working surface, or when the power tool stops, the controller 4 controls the storage unit 41 to store and update the material information of the working surface 10. The controller also includes a timing unit 42, which times the time from when the power tool stops until the dust collection chamber 202 is adjusted and then restarted, and / or the time from the start to the completion of the dust collection chamber 202's adjustment. By recording material information through the storage unit and saving the previous working condition information as a comparison group, changes in working conditions can be accurately identified. By timing the power tool's transition from one state to another, as a means of power tool control, the data is accurate. The timing updates the stored material information, ensuring the validity of the judgment conditions.

[0052] When the distance detected by the second sensor 52 during the operation of the power tool is not less than the distance threshold or the switch 6, it is confirmed that the material information indicated by the first electrical signal detected by the first sensor is inconsistent with the stored material information. The power tool is then started again after the conduction path of the dust collection chamber 202 is adjusted. The starting timing of the power tool can be confirmed in various ways. Examples are given below, but this application is not limited to these methods:

[0053] In an optional example, the controller 4 acquires the adjustment information from the adjustment module 203. If the adjustment information indicates that the conduction path adjustment of the dust collection chamber 202 is complete, the controller 4 controls the power tool to start. Based on the adjustment module information, the power tool can be controlled to start immediately after adjustment, which can save waiting time to some extent. Furthermore, by acquiring the adjustment information to determine the adjustment process of the conduction path and providing real-time feedback, it is possible to detect changes based on actual conditions.

[0054] In an optional example, the storage unit 41 stores the set time for the delayed start of the power tool and the working time required to complete the adjustment of the conduction path of the dust collection chamber 202. The working time is a fixed value, and the set time is not less than the fixed value. If the power tool comes to a slow stop, the timing unit 42 starts timing. If the timing reaches the set time, the controller 4 controls the power tool to start. The working time required to complete the adjustment of the conduction path of the dust collection chamber is a fixed value, which is the time value to ensure the completion of the conduction path adjustment. It can be set by adjusting the actual time of the conduction path through the adjustment module. Directly setting the fixed value and the set time simplifies the control logic and avoids the inability to obtain adjustment information due to damage to the device that detects the adjustment information of the adjustment module. It saves hardware resources, saves costs, and is less prone to errors through software control.

[0055] In an optional example, the required working time can be adjusted by arbitrarily combining the adjustment information of the adjustment module 203, the set time, and the conduction path of the dust collection chamber 202, thereby controlling the start-up timing of the power tool.

[0056] The complete working process of the power tool is as follows: If the current working surface 10 is a wooden working surface, the first dust collection chamber 2021 collects wood waste, and the second dust collection chamber 2022 collects iron waste; the controller 4 controls the conduction path of the first dust collection chamber 2021 of the dust collection chamber 202 to be in the conducting state, and the conduction path of the second dust collection chamber 2022 to be in the closed state. When the switch is turned off, the power tool leaves the working surface 10. The controller 4 receives the off signal from the switch 6. During the operation of the power tool, the third sensor 53 detects the material information in the dust collection pipe 201 and obtains the third electrical signal. If the third electrical signal indicates that there is no grinding waste in the dust collection pipe, the controller 4 controls the power tool to brake slowly to a stop and stores the material information of the working surface 10 detected by the first sensor, which is wood. If the third electrical signal indicates that there is grinding waste in the dust collection pipe 201, the controller 4 controls the power tool to brake slowly to a set speed and maintains the set speed until there is no material information in the dust collection pipe 201. Then, the controller 4 controls the power tool to stop and stores the material information of the working surface 10 detected by the first sensor, which is wood.

[0057] If the current working surface 10 is an iron working surface, the switch is closed, the controller receives the closing signal of the switch 6, the first sensor 51 detects that the working surface 10 is an iron working surface, indicating that the material of the working surface is inconsistent with the stored material information, the controller 4 controls the adjustment of the conduction path of the dust collection chamber 202, controls the conduction path of the first dust collection chamber 2021 of the dust collection chamber 202 to be closed, and the conduction path of the second dust collection chamber 2022 to be open; if the conduction path switching is completed, the green light of the indicator module 7 flashes to indicate, the controller 4 controls the power tool to start, and the stored material information is iron.

[0058] If the current working surface 10 is an iron working surface, during the operation of the power tool, when the power tool leaves the current working surface, the second sensor 52 detects that the distance from the base plate assembly 3 to the working surface 10 is not less than a distance threshold; if the working surface 10 is an iron working surface, the material information detected by the first sensor 51 is consistent with the stored iron information, and the controller controls the first dust collection chamber 2021 of the dust collection chamber 202 to remain closed, while the second dust collection chamber 2022 remains open; if the working surface 10 is a wooden working surface, the material information detected by the first sensor 51 is inconsistent with the stored iron information, and the controller 4 controls the power tool to switch the open path and restart it when it is stopped. The third sensor 53 detects the material information in the dust collection pipe 201. If it indicates that there is no grinding waste in the dust collection pipe 201, the controller 4 controls the power tool to slow down to a stop and stores the current material information of the working surface 10 as wood. If it indicates that there is grinding waste in the dust collection pipe 201, the controller 4 controls the power tool to slow down to a set speed and maintains the set speed until there is no material information in the dust collection pipe 201. The controller 4 then controls the power tool to stop, the timing unit 42 starts timing, and stores the material information of the working surface 10 as wood. The controller 4 controls the conduction path of the first dust collection chamber 2021 of the dust collection chamber 202 to be in a conducting state, and the conduction path of the second dust collection chamber 2022 to be in a closed state. If the conduction path switching is completed, the green light of the indicator module 7 flashes to indicate this. If the timing time reaches the set time, the controller 4 controls the power tool to start again.

[0059] After cleaning the grinding waste from the dust collection device 200, it is installed on the power tool. The controller 4 compares the current working surface material with the stored material information to control the conduction path of the dust collection chamber 202. The initial position of the adjustment module 203 is consistent with that before the dust collection device 200 was disassembled. Alternatively, upon restarting, the stored information in the storage unit 41 is cleared, and the controller controls the power tool to start directly. The adjustment module 203 has a random initial position. When reinstalling in the dust collection device, the stored information is still compared with the current information. By maintaining a consistent dust collection chamber with a corresponding conduction path, the dust collection chamber can collect the same type of grinding waste to a certain extent, resulting in a more uniform internal environment and finer classification. Clearing the stored information reduces the detection steps of the power tool and improves the response speed when the dust collection device is restarted after cleaning.

[0060] This application also provides a computer device, including a memory and a processor; the memory stores a computer program, and the processor executes the computer program to implement the method described above.

[0061] This application also provides a computer-readable medium having processor-executable non-volatile program code that causes the processor to perform the method.

[0062] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0063] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0064] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. A control method for an electric tool, characterized in that, The control method includes: When the switch is in the open state, after receiving the closing signal of the switch, a first electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled based on the first electrical signal; when the switch is in the closed state, after receiving the second electrical signal indicating that the distance is less than the distance threshold, the power tool is controlled to maintain the current working state. When the switch is in the closed state, after obtaining the distance indicated by the second electrical signal as not less than the distance threshold, the first electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled based on the first electrical signal; The first electrical signal is used to indicate the material information of the working surface, and the second electrical signal is used to indicate the distance from the power tool to the working surface.

2. The control method according to claim 1, characterized in that, The control method further includes: After obtaining the disconnection signal of the switch, a third electrical signal is obtained, and the working state of the power tool is controlled based on the third electrical signal. The third electrical signal is used to indicate whether there is material information in the dust collection pipeline. If the third electrical signal indicates that there is material information in the dust collection pipeline, the power tool is controlled to maintain the set speed. If the third electrical signal indicates that the material information is not present in the dust collection pipe, the power tool is controlled to stop, and the material information of the working surface is stored.

3. The control method according to claim 2, characterized in that, When the switch is in the open state, after obtaining the switch's closing signal, a first electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled based on the first electrical signal, including: If the material information indicated by the first electrical signal is consistent with the stored material information, the power tool is controlled to start. If the material information indicated by the first electrical signal is inconsistent with the stored material information, the conduction path of the dust collection chamber is adjusted, and the power tool is started after a set delay.

4. The control method according to claim 2, characterized in that, When the switch is in the closed state, after obtaining a distance not less than the distance threshold indicated by the second electrical signal, the first electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled based on the first electrical signal, including: If the material information indicated by the first electrical signal is consistent with the stored material information, the power tool is controlled to maintain the current working state. If the material information indicated by the first electrical signal is inconsistent with the stored material information, the third electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled and adjusted based on the third electrical signal.

5. The control method according to claim 4, characterized in that, If the material information indicated by the first electrical signal is inconsistent with the stored material information, the third electrical signal is obtained, and the working state of the power tool and the conduction path of the dust collection chamber are controlled and adjusted based on the third electrical signal, including: If the third electrical signal indicates that there is material information in the dust collection pipeline, the power tool is controlled to maintain the set speed. If the third electrical signal indicates that the material information is not present in the dust collection pipe, the power tool is controlled to stop, and the material information of the working surface is stored. After the power tool is detected to have stopped, the control adjusts the conduction path of the dust collection chamber and controls the power tool to start after a set delay.

6. The control method according to claim 3 or 5, characterized in that, The set time is not less than the working time required to complete the adjustment of the conduction path of the dust collection chamber.

7. The control method according to claim 6, characterized in that, If the flow path of the dust collection chamber is adjusted, the control prompt module generates a prompt message.

8. A control system for a power tool, the control system being used to implement the control method of any one of claims 1-7, the power tool including a dust collection chamber, the control system comprising: A controller, a detection module, and a switch, wherein the controller is connected to the detection module and the switch, characterized in that the controller is configured to control the working state of the power tool and / or the conduction path of the dust collection chamber based on the electrical signal of the detection module and the switching signal of the switch.

9. The control system according to claim 8, characterized in that, The control system further includes an adjustment module, which is connected to the controller. The controller is used to adjust the conduction path of the dust collection chamber through the adjustment module.

10. The control system according to claim 8, characterized in that, The power tool also includes a dust collection pipe connected to the dust collection chamber; The detection module includes a first sensor, a second sensor, and a third sensor; The first sensor is used to detect the material information of the working surface to obtain the first electrical signal, and the first electrical signal is used to indicate the material information of the working surface; The second sensor is used to detect the distance between the power tool and the work surface to obtain the second electrical signal, which is used to indicate the distance; The third sensor is used to detect material information within the dust collection pipe to obtain the third electrical signal, which is used to indicate whether the material information exists within the dust collection pipe. 。

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