4G communication vibration data acquisition card

Abstract

The utility model discloses a 4G communication vibration data acquisition card which is used for data acquisition and state monitoring of a remote distributed industrial field. The acquisition card comprises a 4G interface module, an SIM card circuit module, a power conversion module, a state indication module and a master control module. A communication interface adopts an X0812WVS connector and a PCIe-52P40H card seat, so that compatible butt joint with a standard Mini PCIe4G module is realized; the SIM card circuit has electrostatic protection and state detection functions; the power supply module is used for stably reducing 24V voltage to 3.3 V through an LMR14030 chip; sTM32F407ZET6 is selected as the main control chip, and edge algorithm analysis, signal scheduling and abnormal early warning are achieved. The acquisition card also has a sensor access state detection function, can judge faults such as disconnection and reverse connection, and effectively improves the on-site diagnosis capability. Local feature extraction and intelligent reporting are realized through an embedded vibration analysis model, the communication load is reduced, and the cloud processing pressure is relieved. The system is compact in structure, high in function integration level, and suitable for industrial Internet of Things scenes such as unattended operation and remote monitoring.

Description

Technical Field

[0001] This utility model relates to a 4G communication vibration data acquisition card and belongs to the field of data acquisition cards. Background Technology

[0002] A common application scenario in the industry is the online acquisition of vibration data from rotating machinery (fans, motors) for vibration characteristic calculation and analysis, enabling predictive maintenance in the industry. Besides traditional industrial automation, vibration data acquisition cards are also used in various professional fields such as acoustic testing, structural health monitoring, and earthquake monitoring.

[0003] Mainstream hardware configurations:

[0004] 1. Resolution: Modern data acquisition cards typically offer high resolution, with 16-bit and 24-bit being the mainstream. This is crucial for capturing subtle vibration signals.

[0005] 2. Sampling rate: The dynamic range of mainstream acquisition cards covers low frequency (0.1Hz~1kHz) and mid-to-high frequency vibration (1kHz~20kHz).

[0006] 3. Interface compatibility: Mainstream data acquisition cards support IEPE (ICP®) powered accelerometers.

[0007] Number of channels: Multi-channel integrated industrial-grade data acquisition cards typically provide 4 to 32 channels, supporting simultaneous acquisition of multiple channels.

[0008] Anti-interference design: Differential input, shielded cable and isolation technology are used to suppress common-mode noise.

[0009] Data transmission method:

[0010] Since vibration data analysis typically involves real-time acquisition of large amounts of data from multiple channels, most mainstream data acquisition cards use wired interfaces for data transmission. For example, industrial buses like PXI / PXIe, with their low latency (<1μs), are suitable for high-channel-count systems. Portable devices typically use USB 3.0 / 3.1 interfaces to meet the needs of short-distance, high-speed data acquisition. For long-distance distributed measurement applications, mainstream products use 100Mbps or Gigabit Ethernet for remote data transmission.

[0011] For details, please refer to the Chinese utility model patent "A Vibration Data Acquisition Card" with application number CN202321964532.8.

[0012] Existing shortcomings:

[0013] In long-distance distributed scenarios, such as wind turbines, there are characteristics such as long transmission distances and infrequent data acquisition. Using traditional wired vibration data acquisition cards has disadvantages such as difficult and costly wiring; if a combination of traditional wired acquisition cards and wireless forwarding gateways is used, the cost of the wireless forwarding gateways will be added. Utility Model Content

[0014] The purpose of this invention is to provide a 4G communication vibration data acquisition card, which can effectively solve the above-mentioned problems.

[0015] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0016] The system includes a main control module, a multi-channel vibration acquisition module for collecting on-site mechanical vibration data, and a 4G communication module for transmitting data from the main control module. The 4G communication module includes a 4G interface module for connecting to a 4G cellular network for wireless data transmission; a SIM card circuit module including a SIM card slot for providing effective SIM card access support to the 4G cellular network; a power conversion module for supplying power to the 4G communication module; a signal connector including a multi-channel serial interface for serial data interaction between the main control module and the 4G cellular network; and a status indicator module including at least one LED indicator unit for displaying the operating status, network connection status, or data communication status of the 4G communication module.

[0017] Furthermore, the 4G interface module uses a 52-pin PCIe interface package.

[0018] Furthermore, the SIM card circuit module includes a protection circuit to provide electrostatic protection for the SIM signal line and a SIM card insertion status detection pin.

[0019] Furthermore, the power conversion module uses the LMR14030 synchronous buck chip to convert +24V DC to 3.3V DC.

[0020] Furthermore: The status indicator module includes at least one LED_WWAN# signal to indicate the network connection status of the 4G communication module.

[0021] The beneficial effects are:

[0022] This product is a high-performance signal acquisition device based on Ethernet and 4G hybrid communication. This acquisition card provides IEPE-conditioned signals, enabling direct acquisition of data from various IEPE-type sensors. Its 16-bit resolution allows for high-precision data acquisition, and eight vibration sampling channels can sample simultaneously at a sampling frequency of up to 200 ks / s. With the accompanying software, users can flexibly create various custom automated measurement systems on industrial-standard computer platforms. It also features an onboard 2-channel speed data acquisition interface and a 4-channel temperature data acquisition interface. An integrated 4G communication expansion interface allows users to select the appropriate 4G communication mode based on their needs. A built-in lightweight edge computing model enables real-time analysis of data characteristics.

[0023] This data acquisition card's data transmission module adopts a wired-wireless hybrid architecture, providing 100Mbps wired Ethernet communication while integrating an internal expansion interface for flexible expansion to 4G communication. Suitable for long-distance distributed scenarios, it achieves long-distance transmission without cabling, saving the cost of an additional wireless forwarding gateway.

[0024] This data acquisition card integrates a lightweight edge computing vibration analysis model on the terminal side, calculates data characteristics locally in real time, and automatically reports and issues warnings when abnormal conditions occur, reducing communication data traffic and lowering the analysis pressure on the algorithm server.

[0025] This data acquisition card has sensor monitoring capabilities, which can detect the connection status of sensors, including connected, disconnected, and reverse-connected.

[0026] This status information facilitates analysis and location of issues such as wiring errors and cable breaks. Attached Figure Description

[0027] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0028] Figure 1 This is the circuit schematic diagram of this utility model;

[0029] Figure 2 This is the circuit diagram of the 52-pin slot of this utility model;

[0030] Figure 3 This is the circuit diagram of the SIM card slot of this utility model;

[0031] Figure 4 This is the circuit diagram of the power conversion module of this utility model;

[0032] Figure 5 This is the circuit diagram of the board-side connector of this utility model. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0036] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] See Figure 1-5 This invention relates to an embodiment of a 4G communication vibration data acquisition card. The card includes the following functional modules: a main control module, a multi-channel vibration acquisition module for acquiring on-site mechanical vibration data, and a 4G communication module for transmitting data from the main control module. The main control module uses an STM32F407ZET6 microcontroller. Both the multi-channel vibration acquisition module and the main control module are existing technologies; the specific circuit structure and function are described in Chinese Utility Model Patent Application No. CN202321964532.8, entitled "A Vibration Data Acquisition Card". This circuit is an improvement upon this technology by adding a 4G communication module.

[0038] 4G Interface Module: The acquisition card is equipped with an interface device for a 4G communication module to realize 4G communication, including: a PCIe-52P40H slot for installing a packaged 4G communication module.

[0039] It is also equipped with a 52-pin board-side connector of model X0812WVS, which is used to connect all communication signals (UART, USB, SIM, I2C, PCM, power and control signals) of the 4G communication module to the main control module of the acquisition card;

[0040] Module signal coverage includes: UART_RX, UART_TX, UART_CTS, UART_RTS, USB_DM, USB_DP, USIM_VDD, USIM_DATA, USIM_CLK, USIM_RST, WAKE#, PERST#, DTR, etc.

[0041] This interface not only achieves hardware compatibility with 4G communication modules, but also allows for flexible expansion of communication methods, making it suitable for remote wireless communication scenarios and reducing the cost of on-site wiring and repeater deployment.

[0042] For the SIM card circuit module in this circuit: The SIM card module is used to realize identity authentication between the communication module and the operator's network. This module mainly includes: SIM card socket (SIM1) and an electrostatic discharge protection chip of model SMF05CT1G; at the same time, capacitors C280, C281, and C282 and current limiting resistors R79~R81 are also provided between the SIM card module and the 4G interface module to help stabilize the signal.

[0043] Furthermore, the PCIe-52P40H slot supports SIM card insertion status detection (USIM_PRESENCE) and signal integrity protection. This module ensures the SIM card data cable's anti-interference capability during insertion / removal or network switching, and improves system stability through protection circuitry.

[0044] The power conversion module in this circuit is primarily designed to meet the 24V power supply requirements of industrial applications. It includes an LMR14030 synchronous step-down DC-DC chip, along with inductor L8, rectifier diode B360A-13-F (D18), and filter capacitors C263, C271, C272, and C202, to output a stable 3.3V DC power supply for the communication module and main control system. It also supports output overvoltage protection and load stability control. This module boasts advantages such as high conversion efficiency, low temperature rise, and strong adaptability to industrial environments.

[0045] This circuit is designed to control the switching of the communication module and reset the system. The acquisition card is equipped with a control signal management module, which mainly includes: an NPN transistor (Q2) of model 3401, and an enable control circuit composed of resistors R17, R18, etc.; multiple control signals: WAKE# (module wake-up), PERST# (module reset), DTR (data terminal preparation), etc.; controlled by the MCU main control module, the module can be enabled, woken up, and put into sleep mode as needed.

[0046] Communication signal modules (serial port, USB, I2C, PCM)

[0047] This data acquisition card supports multiple communication interfaces to enhance compatibility with the main control MCU and external devices: Serial communication (UART): including UART_TX, UART_RX, UART_CTS, and UART_RTS signals, with hardware flow control functionality; USB communication: including USB_DM and USB_DP, used for high-speed data transmission with modules; I2C interface: I2C_SCL and I2C_SDA, used for expanding and configuring sensors or external control chips; PCM interface: including PCM_CLK, PCM_DOUT, PCM_DIN, and PCM_SYNC, supporting audio or voice module access.

[0048] To facilitate system operation status identification, the acquisition card is equipped with multiple LED status indicator circuits, including: LED_WAN# and LED_WAN# control pins; indicating the working status of the communication module (network connection, disconnection, restart, etc.); coordinating with the main control module to control display behavior, and supporting various lamp status logics.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A 4G communication vibration data acquisition card, characterized in that: It includes a main control module, a multi-channel vibration acquisition module for collecting on-site mechanical vibration data, and a 4G communication module for transmitting data from the main control module; wherein, the 4G communication module includes a 4G interface module for connecting to a 4G cellular network to realize wireless data transmission; A SIM card circuit module, including a SIM card socket, is used to provide effective SIM card access support for 4G cellular networks; The power conversion module supplies power to the 4G communication module; The signal connector includes a multi-channel serial interface for serial data interaction between the main control module and the 4G cellular network. The status indicator module includes at least one LED indicator unit for displaying the operating status, network connection status, or data communication status of the 4G communication module.

2. The 4G communication vibration data acquisition card of claim 1, wherein: The 4G interface module is packaged with a 52-pin PCIe interface.

3. The 4G communication vibration data acquisition card of claim 1, wherein: The SIM card circuit module is equipped with a protection circuit to provide electrostatic protection for the SIM signal line and has a SIM card insertion status detection pin.

4. The 4G communication vibration data acquisition card of claim 1, wherein: The power conversion module uses an LMR14030 synchronous buck chip to convert +24V DC to 3.3V DC.

5. The 4G communication vibration data acquisition card according to claim 1, characterized in that: The status indicator module includes at least one LED signal for indicating the network connection status of the 4G communication module.

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