Intelligent cutter signal acquisition system

Abstract

The embodiment of the invention discloses an intelligent cutter signal acquisition system, a signal transmitting end of the system comprises an intelligent cutter, the intelligent cutter comprises a cutter head, a piezoelectric sensor and a signal transmitting module, the piezoelectric sensor is used for acquiring a charge signal of the cutter head, and the signal transmitting module is used for transmitting the charge signal to a signal acquisition end; a signal acquisition end of the system comprises a charge amplification module and a wireless data acquisition card, and the charge amplification module is used for receiving charge signals and conditioning and amplifying the charge signals to obtain analog signals; the wireless data acquisition card is used for converting the analog signal into a digital signal and sending the digital signal to the signal receiving end; a signal receiving end of the system is used for receiving the digital signal and uploading the digital signal to an upper computer, so that the upper computer monitors and analyzes the state of the intelligent cutter in the machining process according to the digital signal. By adopting the embodiment of the invention, the installation and maintenance of equipment such as cables can be reduced, and meanwhile, the anti-interference capability is improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machining technology, and in particular to an intelligent tool signal acquisition system. Background Technology

[0002] With the development of intelligent manufacturing and CNC machining technologies, the status monitoring of cutting tools during machining has gradually attracted attention. Existing tool monitoring systems mostly rely on wired transmission of sensor signals, typically requiring the laying of numerous cables between the machine tool and external acquisition devices. This method is not only complex to install and maintain, but also susceptible to electromagnetic interference and mechanical vibration in the machine tool environment, leading to signal distortion or loss. Furthermore, due to limited machining space, wired connections can also affect the flexibility of machine tool operation, hindering efficient production. Therefore, there is an urgent need for an intelligent tool signal acquisition system with fewer cables and strong anti-interference capabilities. Summary of the Invention

[0003] This application provides an intelligent tool signal acquisition system, which helps reduce the installation and maintenance of cables and other equipment, while improving anti-interference capabilities.

[0004] This application provides an intelligent tool signal acquisition system, which includes a signal transmitter, a signal acquisition terminal, and a signal receiver, wherein: The signal transmitting end includes a smart cutting tool, which includes a cutting head, a piezoelectric sensor, and a signal transmitting module. The piezoelectric sensor is used to collect the charge signal of the cutting head, and the signal transmitting module is used to transmit the charge signal to the signal collecting end. The signal acquisition terminal includes a charge amplification module and a wireless data acquisition card. The charge amplification module is used to receive the charge signal and condition and amplify the charge signal to obtain an analog signal. The wireless data acquisition card is used to convert the analog signal into a digital signal and send it to the signal receiving terminal. The signal receiving end is used to receive the digital signal and upload the digital signal to the host computer, so that the host computer can monitor and analyze the status of the intelligent tool processing process based on the digital signal.

[0005] Optionally, the signal transmitter also includes a tool holder, and the piezoelectric sensor is disposed on the tool holder near the tool head.

[0006] Optionally, the tool holder has a packaging cavity in the middle, the signal transmitting module is disposed in the packaging cavity, and the signal transmitting module is electrically connected to the piezoelectric sensor.

[0007] Optionally, the signal transmitter further includes a power module, which is disposed on the side of the handle away from the cutter head. The power module is electrically connected to the signal transmitter module to provide power to the signal transmitter module.

[0008] Optionally, the charge amplification module includes a charge signal input port and an analog signal output port, the wireless data acquisition card includes an analog signal input port, the charge signal input port is connected to the signal transmitting module via a wire, and the analog signal output port is connected to the analog signal input port via a wire.

[0009] Optionally, the wireless data acquisition card further includes an analog-to-digital converter, a data buffer module, a main control module, and a first wireless serial port module. The analog-to-digital converter is used to convert the analog signal into a digital signal. The data buffer module is used to buffer the digital signal. The first wireless serial port is used to send the buffered digital signal to the signal receiving end according to the instructions of the main control module.

[0010] Optionally, the wireless data acquisition card further includes a first power interface, which is used to provide power to the modules included in the wireless data acquisition card.

[0011] Optionally, the wireless data acquisition card also includes a device working indicator light and a device power button. Each device working indicator light is used to monitor the transmission status of one of the analog signals, and the device power button is used to start or stop the operation according to the transmission status of the analog signal.

[0012] Optionally, the signal receiving end includes a second wireless serial port module, a second main control module, and a host computer interface. The second wireless serial port module is used to receive the digital signal, and the second main control module is used to process the digital signal and upload the processed digital signal to the host computer through the host computer interface.

[0013] Optionally, the signal receiver further includes a second power interface, which is used to provide power to the modules included in the signal receiver.

[0014] As can be seen, the intelligent tool signal acquisition system provided in this application includes a signal transmitter, a signal acquisition end, and a signal receiver. The signal transmitter includes an intelligent tool, which comprises a tool head, a piezoelectric sensor, and a signal transmission module. The piezoelectric sensor is used to acquire the charge signal of the tool head, and the signal transmission module is used to transmit the charge signal to the signal acquisition end. The signal acquisition end includes a charge amplification module and a wireless data acquisition card. The charge amplification module is used to receive the charge signal and condition and amplify the charge signal to obtain an analog signal. The wireless data acquisition card is used to convert the analog signal into a digital signal and send it to the signal receiver. The signal receiver is used to receive the digital signal and upload the digital signal to a host computer, so that the host computer can monitor and analyze the status of the intelligent tool machining process based on the digital signal.

[0015] In this embodiment, since the cutting head operates at a high frequency and high dynamic range, a piezoelectric sensor is used to collect its charge signal instead of a traditional analog signal. Therefore, the collected charge signal better reflects the working state of the cutting tool and has stronger anti-interference capabilities. Furthermore, since a charge signal is collected, a charge amplification module needs to be integrated at the signal acquisition end to condition and amplify the charge signal, obtaining an analog signal. This analog signal is then converted into a digital signal by a wireless data acquisition card and sent to the signal receiving end. Traditional analog signals can be directly converted into digital signals for transmission. Because this embodiment uses a wireless data acquisition card, fewer cables are needed for transmission, reducing the installation and maintenance of cables and other equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This paper shows a structural block diagram of an intelligent tool signal acquisition system according to an embodiment of the present application; Figure 2 A schematic diagram of the structure of a signal transmitting end provided in one embodiment of this application is shown; Figure 3 This paper shows a structural block diagram of a signal acquisition terminal provided in one embodiment of the present application; Figure 4 A schematic diagram of the structure of a charge amplification module provided in one embodiment of this application is shown; Figure 5This illustration shows a schematic diagram of the structure of a wireless data acquisition card according to an embodiment of this application; Figure 6 A schematic diagram of the structure of a signal receiver provided in one embodiment of this application is shown. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] Please refer to Figure 1 This diagram illustrates a structural block diagram of an intelligent tool signal acquisition system according to an embodiment of this application. The intelligent tool signal acquisition system 1 includes a signal transmitter 10, a signal acquisition terminal 20, and a signal receiver 30, wherein: The signal transmitting end 10 is a device or module that converts raw information (such as sound, images, data, etc.) into electrical signals, optical signals, or electromagnetic wave signals that can be propagated in a transmission medium. In the embodiments of this application, the raw information may be information such as force, vibration, or acoustic emission of the cutting tool during the cutting process.

[0020] The signal acquisition terminal 20 is a device or module that preprocesses electrical signals, optical signals, or electromagnetic wave signals and converts them into digital signals. This preprocessing includes operations such as filtering and noise reduction, amplification and conditioning. In this embodiment, the signal acquisition terminal 20 is used to condition and amplify charge signals to obtain analog signals, and to convert the analog signals into digital signals and transmit them.

[0021] Signal receiver 30 refers to a device or module that acquires digital signals from the transmission medium after they have been processed by signal acquisition terminal 20, and then analyzes, interprets, and applies them to ultimately monitor the status of the cutting process of the tool, provide early warning of abnormalities, or output control commands.

[0022] Please refer to Figure 2 The diagram illustrates a structural schematic of a signal transmitting end provided in one embodiment of this application. The signal transmitting end 10 includes a smart cutter, which includes a cutter head 11, a piezoelectric sensor 12, and a signal transmitting module 13. The piezoelectric sensor 12 is used to collect the charge signal of the cutter head 11, and the signal transmitting module 13 is used to transmit the charge signal to the signal acquisition end.

[0023] Among them, the cutter head 11, as the working part of the intelligent tool, is in direct contact with the workpiece and generates mechanical vibration or pressure changes during cutting and slicing operations, which is the physical source of the charge signal.

[0024] The piezoelectric sensor 12 converts the mechanical signals (such as vibration and stress) generated by the cutting tool into electrical signals, realizing the conversion of mechanical energy into electrical energy, and is the core component for signal acquisition. For example, the piezoelectric sensor 12 can be a piezoelectric cutting force sensor with a range of 0~50kN and an output charge range of ±100~±10000pC, mounted on the lathe tool post to acquire the cutting force signal during lathe cutting.

[0025] The signal transmitting module 13 receives the charge signal output by the piezoelectric sensor 12, processes it, and then transmits it to the signal acquisition terminal.

[0026] Furthermore, the signal transmitting end 10 also includes a handle 15, and the piezoelectric sensor 12 is disposed on the handle 15 near the side of the cutter head 11.

[0027] The piezoelectric sensor 12 is located on the side of the tool holder 15 near the tool head 11 to ensure close-range acquisition of dynamic signals from the tool head and improve detection sensitivity.

[0028] Furthermore, a sealing cavity is provided in the middle of the tool holder 15, and the signal transmitting module 13 is disposed in the sealing cavity. The signal transmitting module 13 is electrically connected to the piezoelectric sensor 12. Specifically, the electrical connection can be made using a high-insulation impedance cable, preferably made of Teflon insulation material, which can achieve low-loss transmission of charge signals and also has waterproof and anti-fouling functions.

[0029] The signal transmitting module 13 is encapsulated in the "encapsulation cavity" in the middle of the tool holder 15 and is connected to the piezoelectric sensor 12 via electrical connection. The cavity design can protect the module from external interference or physical damage.

[0030] Furthermore, the signal transmitting end 10 also includes a power module 14, which is disposed on the side of the handle 15 away from the cutter head 11. The power module 14 is electrically connected to the signal transmitting module 13 to provide power to the signal transmitting module 13.

[0031] The power module 14 provides operating power to the signal transmission module 13, ensuring its stable operation. It is positioned on the side of the tool holder 15 away from the tool head 11 and is electrically connected to the signal transmission module 13. Its layout, along with that of the piezoelectric sensor 12, is located at both ends of the tool holder, which balances the weight of the tool holder and avoids power interference with sensor signal acquisition.

[0032] The handle 15 serves as a structural carrier, integrating and fixing all the aforementioned components (piezoelectric sensor, signal transmission module, power supply module), while also providing a gripping area for the user.

[0033] Please refer to Figure 3 The diagram illustrates a structural block diagram of a signal acquisition terminal provided in one embodiment of this application. The signal acquisition terminal 20 includes a charge amplification module 21 and a wireless data acquisition card 22. The charge amplification module 21 is used to receive the charge signal and condition and amplify the charge signal to obtain an analog signal. The wireless data acquisition card 22 is used to convert the analog signal into a digital signal and send it to the signal receiving terminal.

[0034] The charge amplification module 21 directly receives the charge signal transmitted from the signal transmitter. Since the charge signal output by the piezoelectric sensor is typically weak and susceptible to interference, this module removes noise through conditioning circuitry (such as filtering and impedance matching) and amplifies the signal into an analog signal, providing a stable input for subsequent conversion. For example, the charge amplification module 21 employs high input impedance (≥10¹²Ω) and shielding design, conforming to the interference immunity standards of EN 61000-6-1:2007 and EN 61326-1:2013 (Class A+B equipment). It can convert the ±20pC~±1000000pC charge signal output by the piezoelectric sensor into a standard ±10V voltage signal, satisfying the following conditions: time constant <100000s (long-term stability), drift <0.09pC / s (25℃), <0.9pC / s (0~60℃), output error <±0.5%FSO, and repeatability accuracy <±0.05%FSO.

[0035] The wireless data acquisition card 22 converts the analog signal output from the charge amplification module 21 into a digital signal, facilitating analysis and storage by a computer or processor. The converted digital signal is then transmitted wirelessly (e.g., via Bluetooth, Wi-Fi, LoRa) to the receiving end, enabling remote data transmission. The sampling frequency reaches 100 kS / s, and the analog-to-digital converter has a resolution of 16 bits. The wireless data acquisition card 22 can also be triggered by external events (such as machine tool spindle startup), supporting 3.3~5V TTL trigger signals.

[0036] Among them, the charge amplification module 21 is the "front-end processing unit" of the signal acquisition end, which solves the problem of weak and easily distorted output signals of piezoelectric sensors and provides high-quality analog signals for subsequent digitization. The wireless data acquisition card 22 is the "core conversion and transmission unit", which converts analog signals into processable digital signals through analog-to-digital conversion and realizes long-distance data transmission through wireless communication, avoiding the limitation of device mobility imposed by wired connections.

[0037] Please refer to Figure 4 The diagram illustrates a structural schematic of a charge amplification module provided in one embodiment of this application. The charge amplification module 21 includes a charge signal input port 211 and an analog signal output port 212.

[0038] Among them, the charge signal input port 211 may include at least one, Figure 4 4 charge signal input ports are shown, namely 211a, 211b, 211c, and 211d respectively. The charge signal input port 211 is connected to the signal transmitting module 13 through a wire to ensure low-loss transmission of weak charge signals and reduce interference that may be introduced by wireless transmission. Different charge signal input ports 211 can be used to receive signals transmitted by different signal transmitting ends 10, or can be used to receive different signals transmitted by the same signal transmitting end 10, so as to realize parallel monitoring of multiple devices or support multi-signal acquisition of a single device. Parallel monitoring of multiple devices is like synchronous acquisition of the states of multiple cutting tools in a production line, and multi-signal acquisition of a single device is like different types of charge signals (such as vibration, stress, etc.) of the same signal transmitting end 10 can be connected through different input ports to meet the needs of complex signal analysis. Support "parallel monitoring of multiple devices" and "multi-signal acquisition of a single device" through multi-channel input to adapt to the needs of complex working conditions.

[0039] Among them, the analog signal output port 212 may include at least one of the following: Ethernet interface, RS232 interface, D-Sub15 terminal, such as Figure 4 shown, namely Ethernet interface 212a, RS232 interface 212b, and D-Sub 15 terminal 212c respectively. In the default configuration, the charge amplification module 21 uses the D-Sub 15 terminal 212c as the main output port. The multiple analog signal output ports 212 can be used to connect external devices (such as machine tool PLC) to achieve linkage control.

[0040] Among them, the Ethernet interface is suitable for long-distance and high-rate data transmission, and can be directly connected to a local area network or an industrial Ethernet, which is convenient for communicating with devices such as a host computer and a server (such as a factory monitoring system). The RS232 interface is suitable for short-distance serial communication and is often used to connect local terminal devices (such as a portable data recorder, a PLC controller). As the default main output port, the D-Sub 15 terminal may integrate multifunctional pins such as analog quantity output and control signals, and is adapted to traditional test instruments (such as an oscilloscope, a data acquisition card), taking into account both compatibility and usability. Covering multiple interfaces such as Ethernet, RS232, and D-Sub 15 meets the connection requirements of different transmission distances and device types, and improves the versatility of the module.

[0041] Please refer to Figure 5 , which shows a schematic structural diagram of a wireless data acquisition card provided by an embodiment of the present application. The wireless data acquisition card 22 includes an analog signal input port 221, and the analog signal output port 212 is connected to the analog signal input port 221 through a wire.

[0042] Such as Figure 5As shown, the wireless data acquisition card 22 has an analog signal input port 221 on its outer casing. If the charge amplification module 21 uses the D-Sub 15 terminal 212c as the main output port, then the analog signal input port 221 can correspond to four analog signal input ports including the D-Sub 15 terminal 212c.

[0043] Furthermore, the wireless data acquisition card 22 also includes a device operation indicator light 223 and a device power button 224. Each of the device operation indicator lights 223 is used to monitor the transmission status of one of the analog signals, or... Figure 5 As shown, it displays four device operation indicator lights 223 corresponding to the four analog signal input ports 221. The device power button 224 is used to start and stop the device according to the transmission status of the analog signals.

[0044] The analog signal input port 221 receives the analog signal output from the charge amplification module 21 and serves as the physical interface for the signal to enter the acquisition card. It matches the default output port (D-Sub 15 terminal 212c) of the charge amplification module and specifically includes four analog signal input ports (corresponding to the four analog signal channels in the D-Sub 15 terminal). Signals are received through the analog signal input ports, analog-to-digital conversion is completed, and the signals are transmitted wirelessly.

[0045] The device's indicator lights 223 are used to monitor the transmission status of each analog signal in real time, providing feedback on whether the signal is being transmitted normally through light (e.g., on / off / blinking). There are four indicator lights, one for each of the four analog signal input ports, each corresponding to the status of one of the four input signals. For example, if the signal at input port 1 is transmitting normally, the indicator light for input port 1 will be constantly on; if the signal is interrupted or abnormal, the indicator light will be off or flashing, allowing users to quickly locate the faulty channel. The indicator lights display the signal transmission status in real time, improving device usability and troubleshooting efficiency.

[0046] The device's power button controls the start and stop of the wireless data acquisition card based on the transmission status of the analog signal (or user operation), realizing the device's on / off control and operational status management. Users can directly start and stop the acquisition card using the device's power button 224; alternatively, it can trigger automatic shutdown based on the signal status feedback from indicator lights (such as when a predetermined number of channels are abnormal), or manually power on after the signal is restored. These specific options require design based on the actual logic of the device. The power button enables device start / stop management, ensuring the device operates on demand, saving power, or avoiding invalid data transmission.

[0047] Furthermore, the wireless data acquisition card 22 also includes an analog-to-digital converter, a data cache module, a main control module, and a first wireless serial port module 222, wherein the analog-to-digital converter, the data cache module, and the main control module are internal modules. Figure 5The analog-to-digital converter is used to convert the analog signal into a digital signal, the data buffer module is used to buffer the digital signal, and the first wireless serial port 222 is used to send the buffered digital signal to the signal receiving end according to the instructions of the main control module.

[0048] The analog-to-digital converter (ADC) converts the analog signal received at the analog signal input port (221) (from the charge amplification module 21) into a digital signal, providing a digital foundation for subsequent data processing and transmission. For example, the ADC module can use a high-precision AD7606 ADC chip, capable of synchronous sampling and high-speed digitization of multi-channel analog signals. This chip incorporates an analog filtering circuit and a differential input structure, effectively suppressing common-mode noise and improving the acquisition accuracy of weak signals.

[0049] The central controller of the data acquisition card coordinates the operation of various modules, including controlling the analog-to-digital conversion process, managing data buffers, driving wireless transmission, and responding to external commands. The main control module can use a 32-bit STM32F103RET6 microcontroller to coordinate signal processing and data interaction at the signal acquisition end. This chip supports sleep modes (such as STOP mode with power consumption as low as 2μA), automatically reducing power consumption and extending battery life when there is no signal transmission. Furthermore, it has a built-in interrupt controller that can quickly respond to events such as analog-to-digital conversion completion, data buffer fullness, and wireless transmission status, ensuring real-time signal processing.

[0050] The first wireless serial port module, according to the instructions of the main control module, wirelessly transmits the buffered digital signal to the signal receiving end, realizing remote data transmission. This first wireless serial port module can use an AS69-T20 wireless communication chip with SPI protocol, enabling high-speed data interaction with the main control module and wirelessly transmitting data to the signal receiving end. This chip incorporates CRC (Cyclic Redundancy Check) data verification and frequency hopping communication mechanisms, providing strong anti-interference capabilities and a data transmission success rate >99.9%.

[0051] The data cache module temporarily or permanently stores the digital signals output by the analog-to-digital converter, preventing data loss and supporting offline data retrieval and analysis. The data cache module can use an SD card as the storage medium and exchanges data with the main control module via the SPI communication protocol. It can temporarily or permanently store the acquired digital signals for subsequent retrieval and processing. Using an SD card as the physical storage medium supports hot-swapping and large-capacity expansion. Connecting to the main control module via SPI (Serial Peripheral Interface), the transmission rate can reach 10Mbps, meeting high-speed data read and write requirements.

[0052] Furthermore, the wireless data acquisition card 22 also includes a first power interface 225, which is used to provide power to the modules included in the wireless data acquisition card.

[0053] The first power interface can be powered by an external power adapter or lithium battery, providing a stable DC power supply to all modules inside the wireless data acquisition card (analog-to-digital converter, main control module, wireless serial port module, and data cache module) to ensure continuous operation of the device.

[0054] It can be seen that the wireless data acquisition card achieves efficient conversion and remote transmission of analog signals to digital signals through high-precision analog-to-digital conversion, flexible data caching, intelligent master control scheduling, and reliable wireless transmission. Its modular design takes into account performance, reliability, and scalability, and is suitable for industrial scenarios such as intelligent tool condition monitoring.

[0055] Please refer to Figure 6 The diagram illustrates a structural schematic of a signal receiver 30 according to an embodiment of this application. The signal receiver 30 is used to receive the digital signal and upload it to a host computer, enabling the host computer to monitor and analyze the status of the intelligent tool machining process based on the digital signal.

[0056] Furthermore, the signal receiving end 30 includes a second wireless serial port module 31 and a second main control module (internal structure, Figure 6 (Not shown) and host computer interface 32, the second wireless serial port module 31 is used to receive the digital signal, the second main control module is used to process the digital signal, and upload the processed digital signal to the host computer through the host computer interface 32.

[0057] The second wireless serial port module 31 serves as the "wireless entry point" for the signal receiver, responsible for receiving digital signals sent from the first wireless serial port module 222 of the wireless data acquisition card 22. It is the receiving end of the wireless communication link. It must be compatible with the protocol of the first wireless serial port module 222 to ensure data transmission consistency.

[0058] The second main control module acts as the "central processing unit" of the signal receiver, responsible for processing, parsing, and converting the received digital signals according to protocols. It also coordinates the data interaction between the second wireless serial port 31 and the host computer interface 32, and supports reverse communication with the host computer (such as sending configuration commands). Specifically, for example, it can perform preliminary processing on the received digital signals (such as format conversion and filtering to reduce noise), converting them into structured data (such as JSON / CSV format) that can be recognized by the host computer software. Furthermore, it supports sending commands (such as parameter configuration and mode switching) from the host computer, which, after being parsed by the second main control module, are sent back to the wireless data acquisition card 22 via the second wireless serial port 31, enabling remote control of the acquisition end, such as adjusting the sampling frequency and modifying the transmission interval.

[0059] The host computer interface 32 refers to the communication or data interaction channel connected to the host computer, such as an RS232 / RS485 interface, USB interface, Ethernet interface, Modbus interface, PCI / PCIe interface, etc. Preferably, a USB interface is used in this embodiment. The host computer can run corresponding software programs, which can not only analyze, display and store the acquired tool signals in real time, but also configure parameters and control the working mode of the wireless data acquisition card through reverse communication function.

[0060] The host computer interface 32 serves as a "physical bridge" between the signal receiver and the host computer, responsible for uploading the digital signals processed by the second main control module to the host computer. It also supports the host computer issuing reverse control commands through this interface. The preferred USB interface is plug-and-play, requiring no additional drivers, facilitating rapid deployment. Furthermore, in some scenarios, power can be drawn from the host computer via the USB interface, simplifying external power supply configuration.

[0061] Furthermore, the signal receiving end 30 also includes a second power interface 33, which is used to provide power to the modules included in the signal receiving end.

[0062] The second power interface 33 provides a stable DC power supply to all modules of the signal receiver (second wireless serial port 31, second main control module, and host computer interface 32) to ensure continuous operation of the equipment. The second power interface can have built-in overvoltage and overcurrent protection circuits, which automatically cut off the output when the input voltage is abnormal or the current is too high to protect the internal sensitive circuits.

[0063] Furthermore, the host computer can run dedicated data acquisition and analysis software, such as PemoWare. This dedicated software can configure sensors, supporting the setting of parameters such as piezoelectric sensor range, sensitivity, and sampling rate. It can also connect to other types of measurement signals (such as temperature signals) to achieve multi-sensor adaptation. This dedicated software can also display the process, showing single-channel / multi-channel signal curves in real time (such as the cutting force versus time curve), and supports the comprehensive display of multiple historical curves for easy dynamic trend comparison. This dedicated software can also configure the acquisition program, allowing for customizable measurement start and stop nodes (such as setting "start acquisition when machine tool starts, stop when machine stops"), and supports communication and linkage with external devices (such as machine tool controllers). This dedicated software can also manage data, providing historical data query and filtering functions, and supporting data export (such as Excel format) for subsequent analysis and archiving.

[0064] As can be seen from this embodiment, since the cutting head operates at a high frequency and high dynamic range, a piezoelectric sensor is used to collect its charge signal instead of a traditional analog signal. Therefore, the collected charge signal better reflects the working state of the cutting tool and has stronger anti-interference capabilities. Furthermore, since a charge signal is collected, a charge amplification module needs to be integrated at the signal acquisition end to condition and amplify the charge signal to obtain an analog signal. This analog signal is then converted into a digital signal by a wireless data acquisition card and sent to the signal receiving end. Traditional analog signals can be directly converted into digital signals for transmission. Because this embodiment uses a wireless data acquisition card, fewer cables are needed for transmission, reducing the installation and maintenance of cables and other equipment.

[0065] It is understood that the specific examples in this application are only intended to help those skilled in the art better understand the implementation methods of this application, and are not intended to limit the scope of the invention.

[0066] It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not limit the implementation process of the embodiments of this application in any way.

[0067] It is understood that the various implementation methods described in this application can be implemented individually or in combination, and the implementation methods in this application are not limited in this respect.

[0068] Unless otherwise stated, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0069] It is understood that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0070] It is understood that the memory in the embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Specifically, non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM). It should be noted that the memory in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0071] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0072] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the aforementioned method implementations, and will not be repeated here.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0074] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0075] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0076] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. The 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 of various embodiments of this application. 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.

[0077] The above are merely specific embodiments of this application, but the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. An intelligent tool signal acquisition system, characterized in that, The intelligent tool signal acquisition system includes a signal transmitter, a signal acquisition unit, and a signal receiver, wherein: The signal transmitting end includes a smart cutting tool, which includes a cutting head, a piezoelectric sensor, and a signal transmitting module. The piezoelectric sensor is used to collect the charge signal of the cutting head, and the signal transmitting module is used to transmit the charge signal to the signal collecting end. The signal acquisition terminal includes a charge amplification module and a wireless data acquisition card. The charge amplification module is used to receive the charge signal and condition and amplify the charge signal to obtain an analog signal. The wireless data acquisition card is used to convert the analog signal into a digital signal and send it to the signal receiving terminal. The signal receiving end is used to receive the digital signal and upload the digital signal to the host computer, so that the host computer can monitor and analyze the status of the intelligent tool processing process based on the digital signal.

2. The intelligent tool signal acquisition system according to claim 1, characterized in that, The signal transmitting end also includes a tool holder, and the piezoelectric sensor is disposed on the tool holder near the tool head.

3. The intelligent tool signal acquisition system according to claim 2, characterized in that, The tool holder has a packaging cavity in the middle, the signal transmitting module is disposed in the packaging cavity, and the signal transmitting module is electrically connected to the piezoelectric sensor.

4. The intelligent tool signal acquisition system according to claim 3, characterized in that, The signal transmitting end also includes a power module, which is disposed on the side of the handle away from the cutter head. The power module is electrically connected to the signal transmitting module to provide power to the signal transmitting module.

5. The intelligent tool signal acquisition system according to claim 1, characterized in that, The charge amplification module includes a charge signal input port and an analog signal output port. The wireless data acquisition card includes an analog signal input port. The charge signal input port is connected to the signal transmitting module via a wire, and the analog signal output port is connected to the analog signal input port via a wire.

6. The intelligent tool signal acquisition system according to claim 5, characterized in that, The wireless data acquisition card further includes an analog-to-digital converter, a data cache module, a main control module, and a first wireless serial port module. The analog-to-digital converter is used to convert the analog signal into a digital signal. The data cache module is used to cache the digital signal. The first wireless serial port is used to send the cached digital signal to the signal receiving end according to the instructions of the main control module.

7. The intelligent tool signal acquisition system according to claim 6, characterized in that, The wireless data acquisition card also includes a first power interface, which is used to provide power input to the modules included in the wireless data acquisition card.

8. The intelligent tool signal acquisition system according to claim 7, characterized in that, The wireless data acquisition card also includes a device working indicator light and a device power button. Each device working indicator light is used to monitor the transmission status of one of the analog signals, and the device power button is used to start or stop the operation according to the transmission status of the analog signal.

9. The intelligent tool signal acquisition system according to claim 1, characterized in that, The signal receiving end includes a second wireless serial port module, a second main control module, and a host computer interface. The second wireless serial port module is used to receive the digital signal, and the second main control module is used to process the digital signal and upload the processed digital signal to the host computer through the host computer interface.

10. The intelligent tool signal acquisition system according to claim 9, characterized in that, The signal receiving end also includes a second power interface, which is used to provide power input to the modules included in the signal receiving end.

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