A non-interrupt wireless channel expansion device for an industrial online vibration monitoring system

Abstract

The utility model discloses an industrial online vibration monitoring system's uninterrupted wireless channel extension device, including wireless sensor, double clock module, main control module, power module, wireless module, signal conditioning module and interface module, wireless sensor has multiple settings in the vibration point department of industrial equipment, and every wireless sensor all is connected with wireless module communication, and wireless module and signal conditioning module are integrated in industrial equipment, and main control module is connected with double clock module, power module, wireless module, signal conditioning module and interface module communication respectively, and power module is connected with wireless module and signal conditioning module communication respectively, and interface module is connected with industrial online vibration detection system, constitutes the modular extension device of industrial online vibration detection system, the utility model satisfies the nondestructive extension demand of present online vibration system configuration, realizes reliable connection, and the time synchronization problem of multi -source heterogeneous data has been solved.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial online vibration monitoring, and in particular to an uninterrupted wireless channel extension device for an industrial online vibration monitoring system. Background Technology

[0002] In the field of industrial equipment condition monitoring, fixed-channel online vibration monitoring systems are widely deployed, typically using 8 / 12 / 16-channel wired sensor configurations. Existing technologies face three core problems: First, the fixed number of system channels prevents the addition of monitoring points when higher-level fault diagnosis is required; second, traditional wired expansion solutions require rewiring, resulting in high costs for single-channel upgrades and system downtime; and most importantly, the limited sensor installation locations in critical equipment areas prevent adjustments to the existing measurement point layout. While current standalone wireless monitoring systems avoid the wiring problem, they suffer from drawbacks such as data clock synchronization issues with existing systems and protocol incompatibility. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a non-disruptive wireless channel extension device for industrial online vibration monitoring systems. This device meets the non-destructive expansion requirements of existing industrial online vibration system configurations, enables reliable connections in complex industrial environments, and solves the problems of time synchronization of multi-source heterogeneous data and installation of new measuring points in confined spaces.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: a non-interrupted wireless channel extension device for an industrial online vibration monitoring system, comprising a wireless sensor, a dual-clock module, a main control module, a power supply module, a wireless module, a signal conditioning module, and a CAN interface module; the wireless sensor is disposed at multiple vibration points of the industrial equipment, and each wireless sensor is communicatively connected to the wireless module; the wireless module and the signal conditioning module are integrated into the industrial equipment; the main control module is communicatively connected to the dual-clock module, the power supply module, the wireless module, the signal conditioning module, and the CAN interface module; the power supply module is communicatively connected to the wireless module and the signal conditioning module; the CAN interface module is connected to the industrial online vibration detection system, constituting a modular extension device for the industrial online vibration detection system; wherein, the dual-clock module includes an interconnected optocoupler and a temperature-compensated crystal oscillator.

[0005] Furthermore, the main control module includes a microcontroller, a CAN controller, a parallel bus, and an SPI bus; the microcontroller is connected to the CAN controller, the parallel bus, and the SPI bus respectively; the optocoupler and the temperature-compensated crystal oscillator are communicatively connected to the microcontroller.

[0006] Furthermore, the power module includes an input power bus, a fuse, a DC-DC buck converter, a power inductor, an LC filter, and an output power bus connected in sequence; the output power bus is connected to the microcontroller.

[0007] Furthermore, the wireless module includes an LDO regulator, a LoRa RF chip, a π-type matching circuit, and an antenna interface connected in sequence; the LDO regulator is connected to the output power bus.

[0008] Furthermore, the signal conditioning module includes a sensor interface, a protection circuit, an RC filter circuit, an amplifier, and an analog-to-digital converter connected in sequence.

[0009] Furthermore, the CAN interface module includes a bus transceiver, a bus terminating resistor, and a connector connected in sequence, and the bus transceiver is communicatively connected to the CAN controller.

[0010] Furthermore, the device includes a protection circuit module; the protection circuit module is connected to the signal conditioning module, and the protection circuit module includes a TVS diode and a π-type filter circuit.

[0011] Furthermore, the wireless sensor integrates a three-axis MEMS accelerometer and a LoRa-WiFi dual-mode communication module.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] 1) This utility model enables online, non-destructive expansion of an already deployed system, and the installation process does not affect the normal operation of the system;

[0014] 2) This utility model reduces the cost of single-channel expansion by reusing the signal conditioning circuit and communication link of the original system;

[0015] 3) This utility model solves the problem of not being able to add measuring points in key parts by setting up miniature wireless sensors;

[0016] 4) This utility model uses dual-clock hardware-level synchronization technology to improve data synchronization accuracy;

[0017] 5) This utility model is applicable to the upgrading and transformation of fixed channel vibration monitoring systems already deployed in industries such as power, petrochemical, and metallurgy. It effectively meets the needs of advanced fault diagnosis for new monitoring points and has significant economic benefits and application value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] Example 1

[0021] See Figure 1 As shown, this embodiment provides an uninterrupted wireless channel extension device for an industrial online vibration monitoring system. It is applied to an online vibration monitoring system for wind turbine generators and includes a wireless sensor, a dual clock module 200, a main control module 201, a power supply module 202, a wireless module 203, a signal conditioning module 204, and a CAN interface module 205.

[0022] The wireless sensors are multiple and magnetically attached to the vibration points of the wind turbine generator set. Each wireless sensor is communicatively connected to the wireless module 203. The wireless sensors integrate a triaxial MEMS accelerometer and a LoRa-WiFi dual-mode communication module. The wireless module 203 and signal conditioning module 204 are integrated into the online vibration monitoring system of the wind turbine generator set. The main control module 201 is communicatively connected to the dual clock module 200, power module 202, wireless module 203, signal conditioning module 204, and CAN interface module 205. The power module 202 is communicatively connected to both the wireless module 203 and signal conditioning module 204. The CAN interface module 205 is connected to the industrial online vibration detection system, forming a modular expansion device for the industrial online vibration detection system, possessing the following functions:

[0023] 1) Channel expansion logic: The main control module 201 automatically assigns channel IDs to the wireless sensors, and the numbering sequence continues the last channel number of the original wired sensors.

[0024] 2) Plug and play function: The CAN interface module 205 supports automatic baud rate recognition and is compatible with 500kbps / 1Mbps bus speed.

[0025] 3) Data Transmission Format: The data sent by the wireless sensor includes the raw acceleration value, timestamp and sensor ID, which are directly forwarded to the CAN bus by the main control module 201.

[0026] The dual-clock module 200 includes an interconnected 6N137 optocoupler and a TCXO temperature-compensated crystal oscillator. The 6N137 optocoupler receives the input PPS pulse signal, and the 6N137 optocoupler and the TCXO temperature-compensated crystal oscillator constitute a dual-clock redundancy design.

[0027] The main control module 201 includes an STM32 microcontroller, a CAN controller, a parallel bus, and an SPI bus; the STM32 microcontroller is connected to the CAN controller, the parallel bus, and the SPI bus respectively; the 6N137 optocoupler and the TCXO temperature-compensated crystal oscillator are communicatively connected to the STM32 microcontroller.

[0028] The power module 202 includes a 24V input power bus, a fuse, a TPS54335 DC-DC buck converter, a power inductor, an LC filter, and a 5V output power bus connected in sequence. The 5V output power bus is connected to an STM32 microcontroller, and the input voltage range of the 24V input power bus is 12-24V.

[0029] The wireless module 203 includes an AMS1117LDO voltage regulator, an SX1262LoRa RF chip, a π-type matching circuit, and an antenna interface connected in sequence. The AMS1117LDO voltage regulator is connected to a 5V output power bus, and the wireless module 203 operates in dual-band 2.4G / 5.8G.

[0030] The signal conditioning module 204 includes a sensor interface, a protection circuit, an RC filter circuit, an AD623 amplifier, and an ADS131MO8 analog-to-digital converter connected in sequence. The ADS131MO8 analog-to-digital converter has a sampling rate of 64kSPS / ch and ensures a gain error of ≤±0.1%.

[0031] The CAN interface module 205 includes an SN65HVD72 bus transceiver, a 120-ohm bus terminating resistor, and a connector connected in sequence. The SN65HVD72 bus transceiver is communicatively connected to the CAN controller.

[0032] Example 2

[0033] Unlike Embodiment 1, the uninterrupted wireless channel extension device for the industrial online vibration monitoring system provided in this embodiment includes a protection circuit module; the protection circuit module is connected to the signal conditioning module, and the protection circuit module includes a TVS diode and a π-type filter circuit.

[0034] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A non-interrupted wireless channel extension device for an industrial online vibration monitoring system, characterized in that: The system includes wireless sensors, a dual-clock module, a main control module, a power supply module, a wireless module, a signal conditioning module, and a CAN interface module. Multiple wireless sensors are installed at vibration points on the industrial equipment, and each wireless sensor is communicatively connected to a wireless module. The wireless module and signal conditioning module are integrated into the industrial equipment. The main control module is communicatively connected to the dual-clock module, power supply module, wireless module, signal conditioning module, and CAN interface module. The power supply module is communicatively connected to both the wireless module and signal conditioning module. The CAN interface module is connected to an industrial online vibration detection system, forming a modular expansion device for the industrial online vibration detection system. The dual-clock module includes interconnected optocouplers and a temperature-compensated crystal oscillator.

2. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 1, characterized in that: The main control module includes a microcontroller, a CAN controller, a parallel bus, and an SPI bus; the microcontroller is connected to the CAN controller, the parallel bus, and the SPI bus respectively; the optocoupler and the temperature-compensated crystal oscillator are communicatively connected to the microcontroller.

3. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 2, characterized in that: The power module includes an input power bus, a fuse, a DC-DC buck converter, a power inductor, an LC filter, and an output power bus connected in sequence; the output power bus is connected to a microcontroller.

4. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 3, characterized in that: The wireless module includes an LDO regulator, a LoRa RF chip, a π-type matching circuit, and an antenna interface connected in sequence; the LDO regulator is connected to the output power bus.

5. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 1, characterized in that: The signal conditioning module includes a sensor interface, a protection circuit, an RC filter circuit, an amplifier, and an analog-to-digital converter connected in sequence.

6. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 2, characterized in that: The CAN interface module includes a bus transceiver, a bus terminating resistor, and a connector connected in sequence. The bus transceiver is communicatively connected to the CAN controller.

7. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 1, characterized in that: It includes a protection circuit module; the protection circuit module is connected to the signal conditioning module, and the protection circuit module includes a TVS diode and a π-type filter circuit.

8. The uninterrupted wireless channel extension device for an industrial online vibration monitoring system according to claim 1, characterized in that: The wireless sensor integrates a three-axis MEMS accelerometer and a LoRa-WiFi dual-mode communication module.

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