Intelligent wireless inclination angle vibration monitoring device

Abstract

The utility model provides an intelligent wireless inclination angle vibration monitoring device. The intelligent wireless inclination angle vibration monitoring device comprises a processor, and a positioning module and a sensor module which are electrically connected with the processor, the sensor module comprises at least one acceleration sensor and at least one magnetic sensor, and the positioning module comprises an LBS positioner and a GPS positioner. The device is convenient to install and does not need extra power supply; elements such as three-axis inclination angles, inclination angles, azimuth angles, vibration frequencies, amplitudes, battery voltages, environment temperatures and positioning information can be collected at the same time, the correlation of collected data is greatly improved, and follow-up data analysis is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and particularly relates to an intelligent wireless inclination vibration monitoring device. Background Art

[0002] The tilt sensor is used to measure the change in tilt relative to the horizontal plane. By burying the tilt sensor deep underground near the earthquake site or installing it inside a dangerous building, the change in vibration and the tilt of the building can be captured. The devices for measuring tilt or vibration disclosed in the relevant technical field usually have the following defects: few types of data collected; the structure is not conducive to installation and disassembly maintenance; there is no independent power supply system for powering remote data transmission, and an external power supply is required; the wiring operation during on-site installation is complicated, and the operator's ability is required to be high. Utility Model Content

[0003] In view of the above technical problems, the utility model proposes an intelligent wireless inclination vibration monitoring device, including a processor, a sensor module, and a positioning module; the sensor module includes a 6-axis sensor integrated with an acceleration sensor and a magnetic sensor, a first acceleration sensor and a second acceleration sensor; the sensor module also includes a magnetometer, the SDA pin of the magnetometer is connected to the SDA pin of the processor, and the data output pin of the magnetometer is connected to the 6-axis sensor; the processor is provided with an SPI1 interface for communication, and the sensor module and the positioning module are electrically connected to the SPI1 interface of the processor through an SPI bus.

[0004] As an improvement, the device also includes an independent power supply module; the independent power supply module includes a power supply, and the power supply output end is connected in series with a power supply voltage driver and a voltage reference circuit; the output end of the voltage reference circuit is respectively electrically connected to the positioning module and the 6-axis sensor, the first acceleration sensor and the second acceleration sensor, and the input end of the magnetometer, and the end of the power supply voltage driver is connected to the voltage input end of the processor.

[0005] As an improvement, a field effect transistor is provided at the power input end of the processor, the first pole of the field effect transistor is connected to the control pin of the power voltage driver, the second pole of the field effect transistor is grounded, the third pole of the field effect transistor is connected to the end of the voltage reference circuit and the power input end of the processor, and a grounding resistor is provided.

[0006] As an improvement, the SDA pin and the clock signal pin of the magnetometer are respectively connected to an isolation resistor and then electrically connected to the output end of the voltage reference circuit.

[0007] As an improvement, the positioning module includes an LBS locator and a GPS locator.

[0008] As an improvement, it also includes a wireless data transmission module, the data output end of the processor is electrically connected to the wireless data transmission module, and the wireless data transmission module is a 4G communication module.

[0009] As an improvement, it also includes a sealed shell, which is a hollow cylinder, and its bottom surface is fixedly connected to the mounting base. A PCB board is arranged in the sealed shell, and the PCB board carries the independent power supply module, the processor, the positioning module and the sensor module. The PCB board is fixedly connected to the inner wall of the sealed shell.

[0010] The utility model also provides an intelligent wireless inclination vibration monitoring system, which comprises a plurality of any one of the above-mentioned intelligent wireless inclination vibration monitoring devices.

[0011] The utility model is easy to install and does not require additional power supply; it can simultaneously collect three-axis inclination, tilt angle, azimuth, vibration frequency, amplitude, battery voltage, ambient temperature, positioning information and other factors, greatly increasing the relevance of collected data and facilitating subsequent data analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 : A schematic diagram of the circuit principle of an embodiment;

[0013] Figure 2 : Schematic diagram of an independent power supply module of an embodiment;

[0014] Figure 3 : A schematic diagram of the circuit principle of an embodiment;

[0015] Figure 4 : A schematic diagram of the circuit principle of an embodiment;

[0016] Figure 5 : A schematic diagram of the circuit principle of an embodiment;

[0017] Figure 6 : A schematic diagram of the circuit principle of an embodiment;

[0018] Figure 7 : A schematic diagram of the circuit principle of an embodiment;

[0019] Figure 8 : A schematic diagram of the circuit principle of an embodiment. DETAILED DESCRIPTION

[0020] The following examples further illustrate the content of the utility model, but should not be construed as limiting the utility model. Without departing from the spirit and essence of the utility model, modifications or replacements made to the methods, steps or conditions of the utility model are within the scope of the utility model.

[0021] Some embodiments have Figure 1-2 Shown, including Figure 1 The processor, sensor module, positioning module, and wireless communication module shown in the figure; the sensor module includes a 6-axis sensor integrated with an acceleration sensor and a magnetic sensor, a first acceleration sensor, and a second acceleration sensor; the sensor module also includes a magnetometer, the SDA pin of the magnetometer is connected to the SDA pin of the processor, and the data output pin of the magnetometer is connected to the 6-axis sensor; the processor is provided with an SPI1 interface for communication, and the sensor module, positioning module, and wireless communication module are electrically connected to the SPI1 interface of the processor through the SPI bus. The power supply input end of the 6-axis sensor is provided with two isolation capacitors with different capacitance values.

[0022] The above embodiment uses an extremely low power consumption design + variable frequency acquisition mode to control system power consumption. In low power consumption mode, the frequency is automatically reduced for acquisition (400Hz). When timed acquisition is required or the sensor is tilted or vibrated, it is immediately switched to working mode, high frequency sampling (2000Hz) and continuous reporting. The processor performs real-time spectrum analysis through fast Fourier transform, and extracts frequency domain eigenvalues ​​(excellent frequency and amplitude), which can be used for health analysis of the structure. It can simultaneously collect three-axis inclination, tilt angle, azimuth, vibration frequency, amplitude, positioning information and other elements, greatly increasing the correlation of collected data and facilitating subsequent data analysis.

[0023] In the above embodiment, the 6-axis sensor model is the FXOS8700 6-axis sensor launched by NXP, which is a sensor that combines a 3-axis acceleration sensor (±2g / ±4g / ±8g) and a 3-axis magnetometer sensor in a small QFN plastic package.

[0024] exist Figure 1 Based on this, some embodiments further include: Figure 2 The independent power supply module shown in FIG. 1 comprises a power supply, wherein the output end of the power supply is connected in series with a power supply voltage driver and a voltage reference circuit; the output end of the voltage reference circuit is electrically connected to the positioning module and the 6-axis sensor, the first acceleration sensor and the second acceleration sensor, and the input end of the magnetometer, respectively, and the end of the power supply voltage driver is connected to the voltage input end of the processor.

[0025] Based on the above embodiment, in a more specific embodiment, the power input terminal of the processor is provided with the following Figure 3 The first electrode of the field effect tube is connected to the control pin of the power supply voltage driver, the second electrode (drain) of the field effect tube is grounded, and the third electrode (source) is connected to the power input terminal of the processor, and a grounding resistor is provided. The field effect tube controls the current between the source and the drain by the voltage applied by the gate.

[0026] Based on the above embodiments, more specific embodiments include Figure 4 The magnetometer, the SDA pin and the clock signal pin of the magnetometer are respectively connected to an isolation resistor and then electrically connected to the output end of the voltage reference circuit, and the SETC pin and the SETP pin are coupled through an isolation capacitor.

[0027] In the above embodiments, the positioning module includes an LBS locator and a GPS locator.

[0028] Some specific sensor modules include: Figure 5 The first accelerometer, such as Figure 6 The second accelerometer, such as Figure 7 6-axis sensor.

[0029] Some specific independent power supply modules include Figure 8 The power switch driver and voltage reference modules shown.

[0030] In such Figure 1-7 In some more specific embodiments based on the illustrated embodiments, the data output end of the processor is electrically connected to the 4G communication module EC600N module. Every 2 hours, the EC600N module reports the collected data within 2 hours stored in the processor, and the wireless communication complies with the MQTT v3.1.1 standard protocol.

[0031] The minimum functional parameter requirements of the acceleration sensor in the sensor module involved in the above embodiment are: acceleration range: ±2g, resolution: 0.01mg, accuracy: 0.1mg. Optionally, the acceleration sensor is selected from the acceleration sensors of Analog Devices Inc. model ADXL362 and ADXL355BEZ.

[0032] The sensor module involved in the above embodiment includes a high-precision acceleration sensor SCA3300 based on ceramic capacitors and a Silicon Core QMC5883L magnetometer. The embodiment can at least achieve the following measurement accuracy: vibration frequency 1Hz, vibration range: 1-128Hz; amplitude resolution 1mg, accuracy 3mg.

[0033] On the basis of the above embodiments, some embodiments further include a sealed housing, and the housing material is preferably high-strength, aging-resistant engineering polyurethane. The sealed housing is a hollow cylinder, the bottom surface of which is fixedly connected to the mounting base, and a PCB board is provided in the sealed housing, the PCB board carries the independent power supply module, the processor, the positioning module and the sensor module, and the PCB board is fixedly connected to the inner wall of the sealed housing. In some preferred embodiments, the housing has an IP68 protection grade according to GB / T 4208-2017.

[0034] An embodiment of an intelligent wireless inclination vibration monitoring system is composed of at least one intelligent wireless inclination vibration monitoring device of any one of the above embodiments.

[0035] In the description of the present invention, it should be understood that the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0036] Although the utility model has been described in detail above by general description and specific implementation methods, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model based on the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An intelligent wireless inclination vibration monitoring device, characterized in that: It includes a processor, a sensor module, and a positioning module; the sensor module includes a 6-axis sensor integrated with an acceleration sensor and a magnetic sensor, a first acceleration sensor, and a second acceleration sensor; the sensor module also includes a magnetometer, the SDA pin of the magnetometer is connected to the SDA pin of the processor, and the data output pin of the magnetometer is connected to the 6-axis sensor; the processor is provided with an SPI1 interface for communication, and the sensor module and the positioning module are electrically connected to the SPI1 interface of the processor through an SPI bus.

2. The intelligent wireless inclination vibration monitoring device according to claim 1, characterized in that: The device also includes an independent power supply module; the independent power supply module includes a power supply, and the output end of the power supply is connected in series with a power supply voltage driver and a voltage reference circuit; the output end of the voltage reference circuit is electrically connected to the positioning module and the 6-axis sensor, the first acceleration sensor and the second acceleration sensor, and the input end of the magnetometer, respectively, and the end of the power supply voltage driver is connected to the voltage input end of the processor.

3. The intelligent wireless inclination vibration monitoring device according to claim 2, characterized in that: A field effect transistor is provided at the power input end of the processor, the first pole of the field effect transistor is connected to the control pin of the power voltage driver, the second pole of the field effect transistor is grounded, the third pole of the field effect transistor is connected to the end of the voltage reference circuit and the power input end of the processor, and a grounding resistor is provided.

4. The intelligent wireless inclination vibration monitoring device according to claim 3, characterized in that: The SDA pin and the clock signal pin of the magnetometer are respectively connected to an isolation resistor and then electrically connected to the output end of the voltage reference circuit.

5. The intelligent wireless inclination vibration monitoring device according to claim 1, characterized in that: The positioning module includes an LBS locator and a GPS locator.

6. The intelligent wireless tilt vibration monitoring device according to claim 1, characterized in that: It also includes a wireless data transmission module, the data output end of the processor is electrically connected to the wireless data transmission module, and the wireless data transmission module is a 4G communication module.

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