Vibration monitoring system based on BLE wireless transmission technology

Abstract

The utility model relates to the technical field of vibration monitoring of equipment charging, and discloses a vibration monitoring system based on a BLE wireless transmission technology, comprising a data acquisition module; a serial port interface module; a charging management module; the data acquisition module is a six-axis sensor integrated module carrying a three-axis accelerometer and a three-axis gyroscope; the device is allowed to carry out data transmission when needed, unnecessary energy waste is reduced, stable voltage output is provided, energy loss can be reduced to the maximum extent, and the device is used in cooperation with an MOS tube to be used for adjusting current, reducing power loss under high current and delay of power management, and further reducing system power consumption. Through the design of the data acquisition module carrying the three-axis accelerometer and the three-axis gyroscope, the vibration acceleration, the vibration angular velocity and the three-dimensional displacement data of the equipment can be comprehensively acquired, abundant data sources are provided for vibration analysis, the vibration characteristics of the equipment can be identified more accurately, and the accuracy of fault diagnosis is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibration monitoring technology for equipment charging, specifically a vibration monitoring system based on BLE wireless transmission technology. Background Technology

[0002] With the increasing complexity and intelligence of industrial equipment, vibration monitoring during equipment operation has become a crucial means of ensuring equipment safety and preventing malfunctions. Traditional vibration monitoring systems typically employ wired connections, which suffer from problems such as complex wiring and poor flexibility. To address these issues, wireless vibration monitoring systems have emerged, especially wireless transmission systems based on BLE (Bluetooth Low Energy) technology, which have attracted widespread attention due to their advantages such as low power consumption and long-distance transmission.

[0003] However, existing wireless vibration monitoring systems still have some shortcomings. For example, patent application number CN202120583655.1 discloses a vibration monitoring wireless transmission system. This system uses a star-shaped wireless network and spread spectrum communication technology to achieve wireless transmission of vibration and temperature data, but it mainly focuses on data acquisition and transmission, without explicitly mentioning real-time monitoring and early warning functions. In practical applications, real-time monitoring and early warning are crucial for timely detection of equipment anomalies and prevention of potential failures.

[0004] Furthermore, the existing system needs improvement in energy management. Since devices often cannot be continuously powered, how to effectively reduce energy consumption and extend device battery life while ensuring real-time data transmission has become an urgent problem to be solved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention aims to provide a vibration monitoring system based on BLE wireless transmission technology. This system not only enables comprehensive acquisition and transmission of equipment vibration acceleration, angular velocity, and three-dimensional displacement data, but also emphasizes real-time monitoring and early warning functions. By optimizing the charging management module design and introducing MOSFETs to regulate current, the system effectively reduces power consumption and extends equipment battery life while ensuring real-time data transmission. This invention not only improves the accuracy and efficiency of vibration monitoring but also provides strong support for predictive maintenance of equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration monitoring system based on BLE wireless transmission technology, comprising:

[0007] A data acquisition module that enables the acquisition and transmission of data on equipment vibration acceleration, vibration angular velocity, and three-dimensional displacement;

[0008] A serial port interface module used for transmitting data via serial port connection;

[0009] A charging management module that supplies power to the device;

[0010] One end of the data acquisition module is connected to a lithium battery that powers the circuit board and can be charged by an external power source. The data acquisition module is a six-axis sensor integrated module equipped with a three-axis accelerometer and a three-axis gyroscope.

[0011] The charging management module, serial interface module, and data acquisition module are connected in sequence. A MOSFET is connected between the serial interface module and the data acquisition module to reduce power loss and power management delay under high current.

[0012] Preferably, the charging management module includes a charging interface USB and a power chip U1. An electrostatic protection diode D1 is connected to pin A12 of the charging interface USB. A capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, and capacitor C8 are connected in parallel to the terminals of pins A9 and B9 of the charging interface USB. The two ends of capacitor C8 are respectively connected to pins 1 and 3 of the power chip U1.

[0013] Preferably, the serial interface module includes a serial interface UART, pin 1 of the serial interface UART is connected to diodes U5 and D6 respectively, pin 2 of the serial interface UART is connected to capacitors C11 and C12 connected in parallel, pin 3 of the serial interface UART is connected to diode D5, and pin 4 of the serial interface UART is connected to diode D4.

[0014] One end of diode U5 and pin 2 of power chip U1 are both connected to the terminals of capacitors C11 and C12; one end of diodes D4, D5, and D6 are all grounded.

[0015] Preferably, the data acquisition module includes a chip CJ, a capacitor C1 is connected between pin 1 and pin 2 of the chip CJ, and capacitors C9 and C10 are connected in parallel between pin 3 and pin 8 of the chip CJ.

[0016] The lithium battery includes a positive electrode U2 and a negative electrode U3. The positive electrode U2 is connected to pin 3 of the chip CJ, and the negative electrode U3 is connected to pin 8 of the chip CJ.

[0017] Preferably, a capacitor C2 is connected between pins 15 and 16 of the chip CJ, a resistor R1 and a switch KG are connected in series on pin 12 of the chip CJ, a resistor R2 and a blue-emitting diode LED2 are connected in series on pin 9 of the chip CJ, a resistor R3 and a red-emitting diode LED3 are connected in series on pin 10 of the chip CJ, and one end of each diode LED2 and diode LED3 is connected to VDDIO.

[0018] Preferably, the MOS transistor includes:

[0019] MOSFET Q1.1 is connected between pin 14 of chip CJ and pin 3 of serial interface UART;

[0020] MOSFET Q2.1 is connected between pin 13 of chip CJ and pin 4 of serial interface UART;

[0021] A resistor R4 is connected to the gate of the MOS transistor Q1.1, and a resistor R5 is connected to the gate of the MOS transistor Q2.1.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. This utility model, through the design of a charging management module, allows the device to transmit data only when needed, reducing unnecessary energy waste and providing a stable voltage output. It can minimize energy loss and, in conjunction with a MOSFET, regulate the current, reducing power loss under high current and power management delay, further reducing system power consumption.

[0024] 2. This utility model, through the design of a data acquisition module equipped with a three-axis accelerometer and a three-axis gyroscope, can comprehensively collect the vibration acceleration, vibration angular velocity and three-dimensional displacement data of the equipment, providing a rich data source for vibration analysis, which helps to more accurately identify the vibration characteristics of the equipment and improve the accuracy of fault diagnosis. Attached Figure Description

[0025] Figure 1 This is the circuit diagram of this utility model;

[0026] Figure 2 This is a circuit diagram of the charging management module of this utility model;

[0027] Figure 3 This is a circuit diagram of the serial port interface module and MOS transistor of this utility model;

[0028] Figure 4 This is a circuit diagram of the data acquisition module of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-4 This utility model provides a technical solution: a vibration monitoring system based on BLE wireless transmission technology, which provides real-time and efficient vibration monitoring for equipment to predict and prevent potential equipment failures. The system's development process requires analysis and planning as follows:

[0031] The main application scenarios and target requirements of the system are clearly defined. The approach of "commercial hardware + self-developed software" is adopted. Mature hardware modules on the market are selected, and the host computer (i.e. system control window software) is developed based on the communication transmission protocol of the selected modules and Visual Studio 2022. Finally, a portable EXE package is generated.

[0032] This system includes:

[0033] A data acquisition module that enables the acquisition and transmission of data on equipment vibration acceleration, vibration angular velocity, and three-dimensional displacement;

[0034] The data acquisition module includes a chip CJ, a capacitor C1 is connected between pin 1 and pin 2 of the chip CJ, and capacitors C9 and C10 are connected in parallel between pin 3 and pin 8 of the chip CJ.

[0035] The lithium battery includes a positive electrode U2 and a negative electrode U3. The positive electrode U2 is connected to pin 3 of the chip CJ, and the negative electrode U3 is connected to pin 8 of the chip CJ.

[0036] A capacitor C2 is connected between pins 15 and 16 of the chip CJ. A resistor R1 and a switch KG are connected in series on pin 12 of the chip CJ. A resistor R2 and a blue-emitting diode LED2 are connected in series on pin 9 of the chip CJ. A resistor R3 and a red-emitting diode LED3 are connected in series on pin 10 of the chip CJ. One end of each diode LED2 and diode LED3 is connected to VDDIO.

[0037] Diodes LED2 and LED3 are power indicator lights. Flashing LED2 indicates "power on" and flashing LED3 indicates "low battery". Alternating flashing of LED2 and LED3 indicates "power off".

[0038] A serial port interface module used for transmitting data via serial port connection;

[0039] The serial interface module includes a serial interface UART. Pin 1 of the serial interface UART is connected to diodes U5 and D6 respectively. Pin 2 of the serial interface UART is connected to capacitors C11 and C12 connected in parallel. Pin 3 of the serial interface UART is connected to diode D5. Pin 4 of the serial interface UART is connected to diode D4.

[0040] One end of diode U5 and pin 2 of power chip U1 are both connected to the terminals of capacitors C11 and C12; one end of diodes D4, D5, and D6 are all grounded.

[0041] A charging management module that supplies power to the device;

[0042] The charging management module includes a charging interface USB and a power chip U1. The power chip U1 is a DC-DC power chip U1, which is used to input the external power supply after AC isolation into the lithium battery. The charging interface USB can be used to charge the lithium battery with an external power supply.

[0043] An electrostatic discharge (ESD) protection diode D1 is connected to pin A12 of the USB charging interface. The ESD protection diode D1 is an ESD protection device used to protect electronic devices from ESD damage and to protect the 5V bidirectional signal. The terminals of pins A9 and B9 of the USB charging interface are connected to capacitors C3, C4, C5, C6, C7, and C8 connected in parallel. The two ends of capacitor C8 are connected to pins 1 and 3 of the power chip U1, respectively.

[0044] Multiple capacitors connected in parallel (C3-C8) can filter out low-frequency signals in the current, making the output DC smoother and helping to reduce the impact of power supply fluctuations on the circuit.

[0045] One end of the data acquisition module is connected to a lithium battery that powers the circuit board and can be charged by an external power source. The data acquisition module is a six-axis sensor integrated module equipped with a three-axis accelerometer and a three-axis gyroscope.

[0046] The data acquisition module is equipped with a three-axis accelerometer and a three-axis gyroscope, which can comprehensively collect the vibration acceleration, vibration angular velocity and three-dimensional displacement data of the equipment, providing a rich data source for vibration analysis.

[0047] The technical specifications of the data acquisition module (six-axis sensor integrated module) are as follows:

[0048] 1. Acceleration

[0049] Measurement range: ±16g (resolution 0.00048g);

[0050] Precision: 0.01g (i.e., 0.098m / s) 2 ).

[0051] 2. Angular velocity

[0052] Measurement range: ±2000° / s (resolution 0.061° / s);

[0053] Accuracy: 0.06° / s.

[0054] 3. Temperature

[0055] Measuring range: -45℃~85℃;

[0056] Accuracy: 0.01℃.

[0057] 4. Power consumption

[0058] Operating current: 7.6mA;

[0059] Sleep current: 1.5uA.

[0060] Based on the above parameters, the data acquisition module can meet the vibration monitoring requirements. The module is equipped with a 250mAh rechargeable lithium battery, which theoretically provides a continuous working time of 250 ÷ 7.6 = 32.9 hours when fully charged. If data is transmitted periodically, taking an hourly interval as an example (each transmission lasts 3 minutes), the theoretical working time would be 250 ÷ (7.6 × 0.05 + 1.5 ÷ 1000 × 0.95) = 655.4 hours (approximately 27 days). By periodically charging the data acquisition module and replacing the battery with a higher-capacity one, continuous monitoring of the equipment can be achieved.

[0061] This high-precision data acquisition helps to more accurately identify the vibration characteristics of equipment and improve the accuracy of fault diagnosis.

[0062] By equipping the data acquisition module with a three-axis accelerometer and a three-axis gyroscope, the data acquisition and transmission of vibration acceleration, vibration angular velocity, and three-dimensional displacement are completed.

[0063] The charging management module, serial interface module, and data acquisition module are connected in sequence. A MOSFET is connected between the serial interface module and the data acquisition module to reduce power loss and power management delay under high current. The design of the MOSFET can improve switching and response speed.

[0064] The MOSFET includes:

[0065] MOSFET Q1.1 is connected between pin 14 of chip CJ and pin 3 of serial interface UART;

[0066] MOSFET Q2.1 is connected between pin 13 of chip CJ and pin 4 of serial interface UART;

[0067] A resistor R4 is connected to the gate of the MOS transistor Q1.1, and a resistor R5 is connected to the gate of the MOS transistor Q2.1.

[0068] One end of resistor R4, one end of resistor R5, and the terminals of diodes LED2 and LED3 are all connected to pin 4 of chip CJ.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration monitoring system based on BLE wireless transmission technology, characterized in that, The utility model relates to a kind of data acquisition module for the data acquisition and transmission of device vibration acceleration, vibration angular velocity comprising: Data acquisition module for transmitting data through serial port connection; Charging management module for powering the device; One end of the data acquisition module is connected to a lithium battery that powers the circuit board and can accept an external power source for charging, and the data acquisition module selects a six-axis sensor integrated module with a three-axis accelerometer and a three-axis gyroscope; The charging management module, serial port interface module and data acquisition module are connected in sequence, and a MOS tube is connected between the serial port interface module and the data acquisition module to reduce power loss and delay in power management under high current. The charging management module includes a charging interface USB and a power supply chip U1. A static protection diode D1 is connected to the A12 pin of the charging interface USB. Capacitors C3, C4, C5, C6, C7, and C8 are connected in parallel to the connection end of the A9 pin and the B9 pin of the charging interface USB. The two ends of the capacitor C8 are connected to the 1 pin and the 3 pin of the power supply chip U1, respectively.

2. The vibration monitoring system based on BLE wireless transmission technology according to claim 1, characterized in that: The serial port interface module includes a serial port interface UART. The 1 pin of the serial port interface UART is connected to a diode U5 and a diode D6, respectively. The 2 pin of the serial port interface UART is connected to capacitors C11 and C12 in parallel. The 3 pin of the serial port interface UART is connected to a diode D5. The 4 pin of the serial port interface UART is connected to a diode D4.

3. The vibration monitoring system based on BLE wireless transmission technology according to claim 1, characterized in that: One end of the diode U5 and the 2 pin of the power supply chip U1 are connected to the connection end of the capacitors C11 and C12. One end of the diodes D4, D5, and D6 is grounded. The data acquisition module includes a chip CJ. A capacitor C1 is connected between the 1 pin and the 2 pin of the chip CJ. Capacitors C9 and C10 are connected in parallel between the 3 pin and the 8 pin of the chip CJ.

4. The vibration monitoring system based on BLE wireless transmission technology according to claim 1, characterized in that: The lithium battery includes a lithium battery positive electrode U2 and a lithium battery negative electrode U3. The lithium battery positive electrode U2 is connected to the 3 pin of the chip CJ. The lithium battery negative electrode U3 is connected to the 8 pin of the chip CJ. A capacitor C2 is connected between the 15 pin and the 16 pin of the chip CJ. A resistor R1 and a switch KG are connected in series to the 12 pin of the chip CJ. A resistor R2 and a blue light emitting diode LED2 are connected in series to the 9 pin of the chip CJ. A resistor R3 and a red light emitting diode LED3 are connected in series to the 10 pin of the chip CJ. One end of the diodes LED2 and LED3 is connected to VDDIO. The diode LED2 flashes to indicate the boot state. The diode LED3 flashes to indicate the low battery state. The diodes LED2 and LED3 alternate flashing to indicate the shutdown state.

5. The vibration monitoring system based on BLE wireless transmission technology according to claim 4, characterized in that: The MOS tube includes:

6. The vibration monitoring system based on BLE wireless transmission technology according to claim 5, characterized in that: MOS tube Q1.1 connected between the 14 pin of the chip CJ and the 3 pin of the serial port interface UART. MOS tube Q2.1 connected between the 13 pin of the chip CJ and the 4 pin of the serial port interface UART. ​ The MOS tube Q1.1 and the MOS tube Q2.1 are both 2N7002DW-7-F type N channel enhancement mode MOSFETs; a resistor R4 with a resistance of 10KΩ is connected to the gate of the MOS tube Q1.1, and a resistor R5 with a resistance of 10KΩ is connected to the gate of the MOS tube Q2.1; one end of the resistor R4 and one end of the resistor R5 are both connected to VDDIO.

Images