Control circuit and electric tool

Abstract

The utility model provides a control circuit and an electric tool, and relates to the field of computers. The control circuit comprises a user detection module and a processor, wherein the processor is connected with the user detection module; according to the electric tool, the user feature information is collected through the user detection module, and the corresponding operation mode matched with the user is found through the processor, so that the operation of the electric tool better meets the actual requirements of the user, and the operation efficiency and the user experience of the electric tool are improved.

Description

[Technical field]

[0001] The present application relates to the field of computer technology, and in particular, to a control circuit and an electric tool. [Background technology]

[0002] With the rapid development of science and technology, the frequency of use of power tools is becoming more and more frequent. The power equipment in the existing technology will set a single power-on working mode, which cannot be optimized according to the actual usage conditions of the user, resulting in energy waste under low-load operating conditions and insufficient performance under high-load operating conditions. Therefore, it is necessary to develop a power tool that can intelligently adjust the working mode to meet the actual needs of different users and optimize energy use. [Utility Model Content]

[0003] The main purpose of the utility model is to provide a control circuit and an electric tool, aiming to realize humanized control of the electric tool, improve the flexibility of use of the electric tool, reduce the loss of the equipment, and meet the needs of users.

[0004] According to a first aspect of an embodiment of the present application, a control circuit is provided, the circuit comprising: a user detection module and a processor, the processor being connected to the user detection module;

[0005] The user detection module is used to detect identification information of a target user, generate a target electrical signal, and transmit the target electrical signal to the processor;

[0006] The processor is used to obtain a target operation mode matching the target user according to the target electrical signal and control the PWM waveform output;

[0007] The operation of the motor is controlled according to the PWM waveform.

[0008] An embodiment of the present application provides an electric tool, the electric tool comprising the control circuit and the motor as described in the above embodiment;

[0009] The control circuit controls the operation of the motor.

[0010] The electric tool provided in the embodiment of the present application collects characteristic information of different users through a user detection module and sends it to a processor, which then finds a target operating mode that matches the user and controls the operation of the motor according to the target operating mode, thereby solving the problem that the control during the operation of the electric tool is single and cannot adapt to different users, achieving the technical effect of accurately controlling the operation of the electric tool and improving user comfort.

Brief Description of the Drawings

[0011] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0012] Figure 1 The structure of the control circuit provided by one embodiment of the present application is Figure 1 ;

[0013] Figure 2 The structure of the control circuit provided by one embodiment of the present application is Figure 2 ;

[0014] Figure 3 It is a structural diagram of an electric tool provided in one embodiment of the present application. [Specific implementation method]

[0015] In the process of implementing this application, the inventor found that traditional motor control circuits usually do not have a user identification function, and therefore cannot adjust the motor's operating mode according to the user's specific needs or habits. This may result in low motor operating efficiency, high energy consumption, and failure to meet the user's personalized needs. In order to solve these problems, the utility model proposes an intelligent motor control circuit based on user detection.

[0016] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0017] See also Figure 1 , an embodiment of the present application provides a control circuit, the control circuit 10 comprises: a user detection module 101 and a processor 102, the processor 102 is connected to the user detection module 101;

[0018] The user detection module 101 is used to detect identification information of a target user, generate a target electrical signal, and transmit the target electrical signal to the processor; the identification information of the target user at least includes: one of biometric information or identity feature information.

[0019] The processor 102 is used to obtain a target operation mode matching the target user according to the target electrical signal, and control the PWM waveform output; and control the operation of the motor according to the PWM waveform.

[0020] The operation mode is used to indicate the operation state of the power tool under different workloads and / or usage scenarios. The target operation mode includes at least one of the speed, torque, current, voltage and load of the motor. The target operation mode may include at least one time period and at least one operation mode control method, such as controlling the motor to run at a lower speed in the initial stage and controlling the motor to run at a higher speed in the working stage.

[0021] Please see attached Figure 2 In an optional embodiment, the user detection module 101 can detect the user's identification information in a variety of ways. The user detection module in the control circuit includes: at least one sensor, which is connected to the processor. The sensor detects the voltage signal, ultrasonic signal or optical signal of the target user, thereby obtaining the target user's identification information, generating a target electrical signal, and transmitting the target electrical signal to the processor.

[0022] The user detection module 101 may detect that a target user has activated a target tool and then obtain the identification information of the target user. Detecting that a target user has activated a target tool may detect whether the user has turned on the target tool, or whether the user has grasped the power tool, or whether the user is within a preset range, such as by detecting through a grip sensor, or by detecting through an infrared sensor, or detecting whether a battery is connected, or detecting whether a power button is triggered, etc.

[0023] The sensor in the user detection module may include a capacitive sensor: an electric field is formed by using a silicon wafer and a conductive subcutaneous electrolyte. The height fluctuation of the fingerprint will cause different changes in the pressure difference between the two, thereby achieving accurate fingerprint measurement.

[0024] Alternatively, the sensor in the user detection module may include a biological radio frequency sensor: the sensor emits a trace amount of radio frequency signal, which can penetrate the epidermis of the finger to obtain the inner layer of the texture to obtain information.

[0025] Alternatively, the sensor in the user detection module may include an ultrasonic fingerprint sensor: the sensor transmits ultrasonic waves to the surface of the finger and then receives the reflected echo. Since the ridges and grooves of the finger will generate different ultrasonic signal echoes, the echo signals can be processed to obtain fingerprint image data.

[0026] In an optional embodiment, the sensor in the above-mentioned user detection module can be located in the grip part of the power tool, so as to facilitate the detection of the user's biometric information when the user uses the power tool.

[0027] In an optional embodiment, the user detection module 101 in the control circuit includes: an NFC (Near Field Communication) reader;

[0028] The NFC reader is connected to the processor. The NFC reader is used for two-way communication with the NFC electronic tag of the target user. The NFC reader reads the identity feature information stored in the NFC electronic tag, decodes the information and transmits it to the processor.

[0029] For example, the target user places a card equipped with an NFC electronic tag in the identification area of ​​the NFC reader, and then a two-way communication is established between the NFC reader and the NFC electronic tag of the target user.

[0030] In an optional embodiment, the NFC reader in the user detection module may be located on the top or side of the power tool to facilitate detection of the user's identity feature information when the user uses the power tool.

[0031] In an optional embodiment, the control circuit further includes a communication module;

[0032] One end of the communication module is connected to the processor, and the other end is connected to the remote device; the communication module is used to send request information to the remote device via radio waves; according to the request information, the target operating mode sent by the remote device is received via radio waves, wherein the request information is a request from the processor to send a target operating mode matching the target user based on the identification information of the target user.

[0033] The communication module may include at least one of: a Bluetooth module, a 4G module, a 5G module, a Zig Bee module, a Wi-Fi module, and an NFC module for realizing remote communication.

[0034] The above-mentioned communication module can also transmit the verification information of the target user to confirm whether the target user has the authority to use the target tool. For example, the user enters the account number on the mobile phone, and after the verification is passed, the target tool is remotely activated.

[0035] The remote device may include a terminal device, a server, a cloud device, or other electric tools.

[0036] The user's target operating mode is queried through the remote device, that is, the processing of data such as the user's identification information and the tool's operating information is deployed on the remote device. This not only realizes intelligent control, but also saves the computing resources of the local power tools. The local end does not need to deploy a high-computing-power processor and corresponding storage space, further reducing the cost of the equipment.

[0037] Please see attached Figure 2 In an optional embodiment, the control circuit further includes a voltage sampling circuit and a current sampling circuit, wherein the voltage sampling circuit is connected to the processor, and the current sampling circuit is connected to the processor;

[0038] The voltage sampling circuit is used to detect a voltage signal generated by a target user using a target power tool within a preset time period, and send the voltage signal to the processor;

[0039] The current sampling circuit is used to detect a current signal generated by a target user using a target power tool within a preset time period, and send the current signal to the processor;

[0040] The processor determines a mapping relationship between identification information of a target user and a target device according to the voltage signal and the current signal.

[0041] Please see attached Figure 2 In an optional embodiment, the control circuit further includes: a processor including: an analog-to-digital converter, a timing module and a calculation module,

[0042] The analog-to-digital converter (ADC module) is connected to the timing module, and the analog-to-digital converter is connected to the voltage sampling circuit and the current sampling circuit respectively;

[0043] The analog-to-digital converter is used to obtain the voltage signal transmitted by the voltage sampling circuit and convert the collected analog signal into a digital signal required by the control chip;

[0044] The analog-to-digital converter is used to obtain the current signal transmitted by the current sampling circuit and convert the collected analog signal into a digital signal required by the control chip;

[0045] The timing module is used to detect the time when the analog-to-digital converter receives the voltage signal and the current signal, and generate time data of the voltage signal and the current signal, and send it to the processing module;

[0046] The calculation module is used to obtain the usage data, identification information and operation information of the target device of at least one user within a preset time period through the analog-to-digital converter and the timing module;

[0047] The operation mode matched by the at least one user is determined by clustering analysis, discriminant analysis and classification processing of the usage data, identification information and operation information of the target device of the at least one user.

[0048] The timing module in the control circuit provides an accurate and reliable time reference. The timing module can be a hardware clock (such as a real-time clock RTC) or a software clock based on a microcontroller. The clock module is tightly integrated with the current sampling circuit and the voltage sampling circuit in the control circuit so that the user's usage data and motor operation information within a preset period of time can be accurately recorded. The usage data includes usage time, workload, current consumption, voltage change, etc.; thus, the user can be recommended or automatically set the most suitable operation mode to improve work efficiency, reduce energy consumption or extend the service life of the power tool.

[0049] The calculation module can record user data and motor operation information in chronological order through the timestamp provided by the clock module. These data can be stored in the local memory or sent to the remote server through the network for further processing and analysis.

[0050] For example, by analyzing the user's workload and usage time in different time periods, it is possible to analyze whether there are differences in the tool's operating data at the start-up stage and the operation stage, or in the user's operation data.

[0051] The clock module can also be used to dynamically adjust the operating mode. By monitoring user data and motor operation information in real time, the power tool can automatically switch to a more suitable operating mode when necessary and make further optimizations based on user feedback.

[0052] The clock module in the processor can achieve accurate time management and data recording. Through the timestamp and data analysis provided by the clock module, and the voltage and current information obtained by the circuit, the processor can deeply analyze the user's usage behavior and mode, so as to match the most suitable operation mode for the user and provide a more personalized, efficient and reliable user experience.

[0053] Please see attached Figure 2 In an optional embodiment, the control circuit further includes: a memory, wherein the memory is used to store identification information of at least one user and an operating mode matched by at least one user.

[0054] In an optional embodiment, establishing a matching relationship between a target user and a target operation mode in the method provided in the embodiment of the present application includes:

[0055] After detecting that the target user has activated the target power tool, the identification information of the target user is read and the usage data of the current user is started to be counted, including: counting the current and time data of the target user when using the power tool in a first time period, and calculating the power consumption data of the first time period; then counting the usage data of the second time period in turn; until the usage data of a preset number of times or a preset amount of time is completed.

[0056] After obtaining the usage data of the target user, weighted processing, discretization processing or average processing can be performed to determine the operating parameters with the highest frequency or longest duration used by the current user, and then the preset operating model is input based on the determined operating parameters to determine the target operating mode of the target user.

[0057] After obtaining the usage data of the target user, the preset intervals of the preset operation model can be determined in turn by inputting the operating parameters in each usage time, and then statistically analyzing the target intervals that fall into the preset intervals the most or last the longest to determine the target operation mode of the target user.

[0058] Please refer to the attached Figure 3 The structure of the electric tool shown in the figure is a chain saw device as an example. The chain saw is equipped with a fingerprint recognition module at the handle part, so that the user's identification information can be detected when the user uses it; the chain saw is also equipped with a processor and a memory. The processor can establish a matching relationship with the target user according to the user's identification information and store it in the memory: the chain saw is also equipped with a current acquisition module to collect the motor's operating data, such as current data, working time, load size, etc., and store these data in the Flash memory. The processor analyzes the data in the memory regularly or under specific conditions, and identifies the user's mode of using the chain saw through the algorithm in the processor. The chain saw is also equipped with a communication module, which can transmit the identification information and operating mode of at least one user to a remote device for storage and analysis. When the chain saw is started, the processor automatically sets the working state of the chain saw according to the analysis results of the target user. For example, if the user usually uses the chain saw for a short time for light pruning work, the device will default to energy-saving mode to extend battery life. On the contrary, if the user performs frequent or continuous heavy-load work, such as cutting down large trees, the device will automatically switch to performance mode to provide continuous and powerful power output.

[0059] Please see attached Figure 2 , in an optional embodiment, the control circuit further includes: a driving module;

[0060] The driving module is connected to the processor, and outputs a PWM waveform to control the operation of the motor according to the driving instruction sent by the processor.

[0061] Please see attached Figure 2 ,In an optional embodiment, the control circuit further includes: a motor detection module, the motor detection module is connected to the processor;

[0062] The motor detection module is installed on the motor module to monitor the operation of the motor (such as the rotation speed) and send it to the processor.

[0063] The motor detection module is used to detect the operation of the motor in real time and send it to the processor, so that the processor can adjust the motor operation module in time to ensure that the power tool always maintains the best performance and safety state. The control circuit provided in the embodiment of the present application collects characteristic information of different users through the user detection module and sends it to the processor, and then finds the target operation mode matching the user through the processor, and controls the operation of the motor according to the target operation mode, which solves the problem that the control during the operation of the power tool is single and cannot adapt to different users, achieves the technical effect of accurately controlling the operation of the power tool, and improves the user's comfort.

[0064] More importantly, the control circuit provided in the embodiment of the present application can prevent injuries caused by children or new employees operating the equipment. Most existing power tools can enter a preset working state after pressing the switch. If children or other non-professionals accidentally touch the switch, the power tool enters the working state, and the running power tool may cause personal injury or tool damage; or after a new employee turns on the equipment, the motor immediately reaches a high speed, which will cause the new employee to be unable to adapt to high-speed tools and unable to control the equipment to accurately complete the task.

[0065] An embodiment of the present application provides an electric tool, which includes a control circuit and a motor as described in the above embodiment, and the control circuit controls the operation of the motor, such as adjusting the motor speed and power output.

[0066] In an optional embodiment, the electric tool further comprises a working component, which is connected to the motor, and the motor drives the working component to run or stop, wherein the working component may comprise a cutting component or a drill component.

[0067] The above-mentioned power tools can be handheld power tools, garden power tools, etc., and can also include but are not limited to electric drills, electric wrenches, electric screwdrivers, electric hammers, impact drills, electric planers, lawn mowers, grass trimmers, etc.

[0068] The electric tool provided in the embodiment of the present application collects characteristic information of different users through a user detection module and sends it to a processor, which then finds a target operating mode that matches the user and controls the operation of the motor according to the target operating mode, thereby solving the problem that the control during the operation of the electric tool is single and cannot adapt to different users, achieving the technical effect of accurately controlling the operation of the electric tool and improving user comfort.

[0069] The specific definition of the control device of the above-mentioned electric tool can be found in the above definition of the control circuit, which will not be repeated here.

[0070] Each module in the control device of the above-mentioned electric tool can be implemented in whole or in part by software, hardware or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0071] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0072] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A control circuit, characterized in that: include: A user detection module and a processor, wherein the processor is connected to the user detection module; The user detection module is used to detect identification information of a target user, generate a target electrical signal, and transmit the target electrical signal to the processor; The processor is used to obtain a target operation mode matching the target user according to the target electrical signal and control the PWM waveform output; Controlling the operation of the motor according to the PWM waveform; The identification information of the target user includes at least one of: biometric information or identity information; The target operation mode includes at least one of the speed, torque, current, voltage and load of the motor.

2. The control circuit according to claim 1, characterized in that: The user detection module includes: at least one sensor, the sensor is connected to the processor, The sensor is used to detect a voltage signal or an ultrasonic signal or an optical signal of a target user, thereby obtaining identification information of the target user, generating a target electrical signal, and transmitting the target electrical signal to a processor.

3. The control circuit according to claim 1, characterized in that: The user detection module includes: an NFC reader; the processor is connected to the NFC reader; The NFC reader is used for bidirectional communication with the NFC electronic tag of the target user. The NFC reader reads the identity feature information of the target user stored in the NFC electronic tag, and transmits the identity feature information to the processor after decoding.

4. The control circuit according to claim 1, characterized in that: The control circuit further includes: a communication module; one end of the communication module is connected to the processor, and the other end is connected to a remote device; The communication module is used to send request information to the remote device via radio waves; Receiving a target operation mode sent by the remote device according to the request information; The request information is a request from the processor to send a target operation mode matching the target user according to the identification information of the target user.

5. The control circuit according to claim 1, characterized in that: The control circuit includes: a voltage sampling circuit and a current sampling circuit, The voltage sampling circuit is connected to the processor. The current sampling circuit is connected to the processor. The voltage sampling circuit is used to detect a voltage signal generated by a target user using a target power tool within a preset time period, and send the voltage signal to the processor; The current sampling circuit is used to detect a current signal generated by a target user using a target power tool within a preset time period, and send the current signal to the processor; The processor determines a mapping relationship between identification information of a target user and a target device according to the voltage signal and the current signal.

6. The control circuit according to claim 5, characterized in that: The processor in the control circuit includes: an analog-to-digital converter, a timing module and a calculation module The analog-to-digital converter is connected to the timing module, and the analog-to-digital converter is connected to the voltage sampling circuit and the current sampling circuit respectively; The analog-to-digital converter is used to obtain a voltage signal transmitted by a voltage sampling circuit and to obtain a current signal transmitted by a current sampling circuit; The timing module is used to detect the time when the analog-to-digital converter receives the voltage signal and the current signal, and generate time data of the voltage signal and the current signal, and send it to the processing module; The calculation module is used to obtain the usage data, identification information and operation information of the target device of at least one user within a preset time period through the analog-to-digital converter and the timing module; The operation mode matched by the at least one user is determined by clustering analysis, discriminant analysis and classification processing of the usage data, identification information and operation information of the target device of the at least one user.

7. The control circuit according to claim 1, characterized in that: The control circuit further includes: a memory, wherein the memory is used to store identification information of at least one user and an operation mode matched by at least one user.

8. The control circuit according to claim 1, characterized in that: The control circuit further includes: a driving module; According to the driving instruction sent by the processor, a PWM waveform is output to control the operation of the motor.

9. The control circuit according to claim 1, characterized in that: The control circuit further includes: a motor detection module, the motor detection module is connected to the processor; The motor detection module is installed on the motor module to monitor the motor's rotation speed and send it to the processor.

10. An electric tool, characterized in that: The electric tool comprises: a control circuit and a motor and a working component according to any one of claims 1 to 9, wherein the working component is connected to the motor; The control circuit controls the operation of the motor.

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