Vibration monitoring device and system

Abstract

The utility model discloses a vibration monitoring device and system. The vibration monitoring device comprises a main control module, an MEMS sensor, a Lora communication module and a main communication module. The MEMS sensor is connected with the data transmission end of the main control module; the Lora communication module and the main communication module are respectively connected with the communication end of the main control module; the MEMS sensor is used for collecting vibration data; the Lora communication module is used for forming a Lora communication network with the Lora communication module in at least one adjacent vibration monitoring device; the main communication module is used for communicating with a monitoring host. Lora communication networking is formed based on the Lora communication module and the Lora communication modules of other adjacent vibration monitoring devices, so that a plurality of vibration monitoring devices can be synchronously triggered, multi-point synchronous monitoring of a building is realized, data uploading is carried out through the main communication module, the communication process is carried out in a wireless communication mode, and the communication efficiency is improved. Not only is multi-point synchronous monitoring of the building realized, but also the problems of tedious wiring, high installation difficulty and high implementation cost are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure safety monitoring technical field especially, and it is a kind of vibration monitoring device and system. BACKGROUND

[0002] The vibration monitoring scheme commonly used in current engineering mainly includes: single-point vibration measurement and multi-point vibration measurement. Among them, single-point vibration measurement is to install an independent vibration monitoring device on the building, which usually operates independently, and cannot realize multi-point synchronous monitoring. Multi-point vibration measurement is to install multiple vibration sensors at different positions of the same building, and then connect each sensor to the monitoring host through wired connection, to monitor the vibration state of multiple positions simultaneously through the host. However, the multi-point monitoring device uses wired connection, which has the problems of complicated wiring, high installation difficulty and high implementation cost. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a vibration monitoring device and system that can be used to realize multi-point vibration measurement and reduce implementation cost.

[0004] To solve the above technical problems, the utility model adopts the technical scheme that:

[0005] A vibration monitoring device, comprising a master control module, a MEMS sensor, a Lora communication module and a main communication module; the MEMS sensor is connected to the data transmission end of the master control module; the Lora communication module and the main communication module are respectively connected to the communication end of the master control module; the MEMS sensor is used to collect vibration data; the Lora communication module is used to form a Lora communication network with at least one adjacent Lora communication module in the vibration monitoring device; and the main communication module is used to communicate with a monitoring host.

[0006] Further, it further comprises a power management module; the output end of the power management module is respectively connected to the power input end of the master control module, the power input end of the MEMS sensor, the power input end of the Lora communication module and the power input end of the main communication module.

[0007] Further, it further comprises a super capacitor module; the super capacitor module is connected to the input end of the power management module.

[0008] Further, it further comprises a charging module; the input end of the charging module is used to connect external power supply; and the output end of the charging module is connected to the super capacitor module.

[0009] Further, the charging module comprises a voltage monitoring chip and a MOS tube; an input end of the MOS tube is used for connecting an external power supply; an output end of the MOS tube is connected with the super capacitor module; a control end of the MOS tube is connected with a control output end of the voltage monitoring chip; and a monitoring end of the voltage monitoring chip is connected with the super capacitor module.

[0010] Further, a diode unit is further included; an input end of the diode unit is connected with the input end of the MOS tube; and an output end of the diode unit is connected with the output end of the MOS tube.

[0011] Further, a solar cell module and a data storage module are further included; an output end of the solar cell module is connected with an input end of the power management module; and the data storage module is connected with a data storage end of the master control module.

[0012] Further, all external pins of the MEMS sensor are connected with resistors with preset resistance values in series.

[0013] Further, the main communication module comprises a Bluetooth communication module and a 4G communication module; the Bluetooth communication module and the 4G communication module are connected with communication ends of the master control module respectively.

[0014] In order to solve the above technical problems, another technical scheme of the utility model is adopted:

[0015] A vibration monitoring system comprises at least two vibration monitoring devices as described above; the vibration monitoring devices are connected through Lora communication modules to form a Lora communication network, and communicate with each other through the Lora communication network.

[0016] The utility model discloses the beneficial effect lies in: through master control module is connected with MEMS sensor, Lora communication module and main communication module respectively, and based on MEMS sensor realizes the acquisition of building vibration data to and through Lora communication module and other adjacent vibration monitoring device's Lora communication module forms Lora communication network, makes a plurality of vibration monitoring devices can synchronous trigger, realizes the multi-point synchronous monitoring of building to, and through main communication module carries out data upload, and all adopts wireless communication mode in the communication process, compared with prior art device, not only realizes the multi-point synchronous monitoring of building, and solves the problem of wiring complicated, and the installation difficulty is big and the implementation cost is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a module schematic view of the vibration monitoring device in the utility model;

[0018] Figure 2A Lora communication networking schematic diagram of the vibration monitoring device;

[0019] Figure 3 A charging circuit principle diagram of the super capacitor module of the vibration monitoring device in the utility model;

[0020] Figure 4 A circuit principle diagram of the MEMS sensor of the vibration monitoring device in the utility model;

[0021] Figure 5 A distributed installation schematic diagram of the vibration monitoring system on a bridge.

[0022] Label explanation:

[0023] 1, main control module; 2, MEMS sensor; 3, Lora communication module; 4, main communication module; 41, Bluetooth communication module; 42, 4G communication module; 5, power management module; 6, super capacitor module; 7, solar cell module; 8, data storage module; 9, charging module; U1, voltage monitoring chip; Q1, MOS tube; 91, diode unit. Specific implementation

[0024] In order to explain the technical content, the purpose and the effect of the utility model in detail, the following will be explained in combination with the embodiment and the drawings.

[0025] A vibration monitoring device, comprising a main control module, a MEMS sensor, a Lora communication module and a main communication module;

[0026] The data transmission end of the MEMS sensor is connected with the main control module;

[0027] The Lora communication module and the main communication module are connected with the communication end of the main control module respectively;

[0028] The MEMS sensor is used for collecting vibration data;

[0029] The Lora communication module is used for forming Lora communication networking with at least one adjacent Lora communication module in the vibration monitoring device;

[0030] The main communication module is used for communicating with a monitoring host.

[0031] The utility model discloses the beneficial effect lies in: through the main control module is connected with MEMS sensor, lora communication module and main communication module respectively, based on MEMS sensor realizes the acquisition of building vibration data to other adjacent vibration monitoring device's lora communication module with lora communication module, and the lora communication module constitutes lora communication networking, so that multiple vibration monitoring device can synchronous trigger, realizes the multi -point synchronous monitoring of building to the data upload of main communication module, and all adopts wireless communication mode in the communication process, compared with prior art, not only realizes the multi -point synchronous monitoring of building, and solves the problem of wiring complicated, the installation difficulty is big and the implementation cost is high.

[0032] Further, it further comprises a power management module; the output end of the power management module is connected with the power input end of the main control module, the power input end of the MEMS sensor, the power input end of the Lora communication module and the power input end of the main communication module respectively.

[0033] From the above description, by setting the power management module, and the power management module is connected with the main control module, MEMS sensor, Lora communication module and main communication module respectively, so that the power management module can provide the voltage required by each module for the main control module, MEMS sensor, Lora communication module and main communication module, so that each module works stably.

[0034] Further, it further comprises a super capacitor module; the super capacitor module is connected with the input end of the power management module.

[0035] From the above description, the super capacitor module is used as the power supply, compared with the existing ordinary battery as the power supply, the charge and discharge temperature range of the super capacitor module can reach-20 DEG C to 60 DEG C, and the charging temperature of the existing ordinary battery is generally within 45 DEG C, so the super capacitor is more suitable for outdoor environment than the ordinary battery, so as to improve the safety of the device, and the device can be operated stably for a long time.

[0036] Further, it further comprises a charging module; the input end of the charging module is used for connecting external power supply; the output end of the charging module is connected with the super capacitor module.

[0037] From the above description, by setting the charging module, the super capacitor module is charged by the external power supply.

[0038] Further, the charging module comprises a voltage monitoring chip and a MOS tube; an input end of the MOS tube is used for connecting an external power supply; an output end of the MOS tube is connected with the super capacitor module; a control end of the MOS tube is connected with a control output end of the voltage monitoring chip; and a monitoring end of the voltage monitoring chip is connected with the super capacitor module.

[0039] As can be known from the above description, by connecting the input end and the output end of the MOS tube with the external power supply and the super capacitor module respectively, and connecting the control end of the MOS tube with the control output end of the voltage monitoring chip, and then connecting the monitoring end of the voltage monitoring chip with the super capacitor module to monitor the voltage of the super capacitor module, when the voltage of the super capacitor module is lower than a preset threshold, the super capacitor module can be charged by the external power supply.

[0040] Further, a diode unit is further included; an input end of the diode unit is connected with the input end of the MOS tube; and an output end of the diode unit is connected with the output end of the MOS tube.

[0041] As can be known from the above description, by arranging the diode unit between the input end and the output end of the MOS tube, when the voltage is too low for the voltage monitoring chip to work, the external power supply can output electric energy to the super capacitor module through the diode unit to charge the super capacitor module.

[0042] Further, a solar cell module and a data storage module are further included; an output end of the solar cell module is connected with an input end of the power management module; and the data storage module is connected with a data storage end of the main control module.

[0043] As can be known from the above description, by arranging the solar cell module, solar energy can be converted into electric energy to supply power to the subsequent modules; and by arranging the data storage module, the collected data and the data processed by the main control module can be stored to provide data support for subsequent data uploading, analysis and other operations.

[0044] Further, a resistance with a preset resistance value is connected in series on all external pins of the MEMS sensor.

[0045] As can be known from the above description, by connecting the resistance with the preset resistance value in series on all external pins of the MEMS sensor, the conduction interference of the main control module on the MEMS sensor is reduced.

[0046] Further, the main communication module comprises a Bluetooth communication module and a 4G communication module; the Bluetooth communication module and the 4G communication module are connected with a communication end of the main control module respectively.

[0047] As can be known from the above description, the main communication module comprises the Bluetooth communication module and the 4G communication module, that is, the device can communicate with the monitoring host through the Bluetooth communication module and the 4G communication module, so that the device and the monitoring host can effectively communicate through multiple communication modes.

[0048] Another embodiment of the utility model provides a kind of vibration monitoring system, comprising at least two above-mentioned vibration monitoring devices;The vibration monitoring device is connected by Lora communication module and is formed Lora communication networking, and it is communicated by the Lora communication networking.

[0049] As can be known from the above description, the Lora communication networking is formed by the multiple vibration monitoring devices, so that the multiple vibration monitoring devices can be triggered synchronously, and the multi-point synchronous monitoring of the building is realized.

[0050] The vibration monitoring device provided by the utility model can be applied to the structural safety monitoring of buildings such as high-rise buildings, bridges and towers, which will be described in detail through specific embodiments.

[0051] Embodiment one

[0052] Please refer to Figure 1 A vibration monitoring device comprises a master control module 1, a MEMS (Micro ElectroMechanical System) sensor 2, a Lora communication module 3, a main communication module 4, a power management module 5, a super capacitor module 6, a solar cell module 7 and a data storage module 8. The main communication module 4 comprises a Bluetooth communication module 41 and a 4G communication module 42. Meanwhile, the vibration monitoring device is designed in an integrated manner, has no external wiring, is easier to install, and eliminates the cumbersome wiring construction process when applied to multi-point monitoring installation.

[0053] The MEMS sensor 2 is connected to the data transmission end of the master control module 1. The Lora communication module 3, the Bluetooth communication module 41 and the 4G communication module 42 are respectively connected to the communication end of the master control module 1. The MEMS sensor 2 is used to collect vibration data. As shown in Figure 2 The Lora communication module 3 is used to form a Lora communication network with at least one adjacent Lora communication module 3 in the vibration monitoring device. The main communication module 4 is used to communicate with a monitoring host. That is, the vibration monitoring device realizes information exchange between multiple vibration monitoring devices through local wireless communication. When data is sent, a broadcast mode is adopted, and any monitoring point can initiate communication. Meanwhile, to avoid signal conflict, whether the channel is busy before each communication is detected, and the channel is broadcasted for three times, so as to realize synchronous triggering of multiple devices and multi-point synchronous monitoring.

[0054] The output end of the power management module 5 is connected with the power input end of the main control module 1, the power input end of the MEMS sensor 2, the power input end of the Lora communication module 3 and the power input end of the main communication module 4 respectively; the super capacitor module 6 is connected with the input end of the power management module 5; the output end of the solar cell module 7 is connected with the input end of the power management module 5, and the electric energy output by the solar cell module 7 can charge the super capacitor module 6 through the power management module 5; the data storage module 8 is connected with the data storage end of the main control module 1.

[0055] The MEMS sensor 2 adopts a high-precision three-axis acceleration sensor ADXL355B, and the resolution can reach 4 μg, which can be automatically triggered according to the change threshold, and meets the requirements of high-precision building vibration monitoring. The super capacitor module 6 is used as a power supply, and the capacity of a single super capacitor is 4000 F / 4.2 V. The device power supply includes the super capacitor module 6 composed of multiple super capacitors in parallel, and the capacity of the capacitor can be configured to 16000 F~32000 F. Since the vibration monitoring device is usually installed outdoors, the temperature under the sun can reach 60℃ in summer. The charging temperature of ordinary batteries is generally within 45℃, which cannot meet the requirements of harsh outdoor environment. The charging and discharging temperature range of the super capacitor can reach-20~+60℃, which is more suitable for outdoor environment.

[0056] Meanwhile, the vibration monitoring device is built-in with data analysis algorithm, which can analyze the original acceleration data, obtain vibration frequency, vibration amplitude, swing angle, inclination angle and other data, and analyze collision, deformation and building health status. For example, the current acceleration data is compared with the acceleration data at the time of installation, the change amount of the device pitch angle and roll angle is calculated, the original data is converted through fast Fourier transform to obtain the frequency spectrum data of the signal, and finally the three groups of signals with the strongest signal in the frequency spectrum are taken as the 1st, 2nd and 3rd order frequencies of the vibration, and the vibration amplitude is calculated according to the acceleration change amplitude and frequency.

[0057] In an optional embodiment, a charging module 9 is further included; the input end of the charging module 9 is used for connecting an external power supply; and the output end of the charging module 9 is connected with the super capacitor module 6. Please refer to Figure 3The charging module 9 includes a voltage monitoring chip U1 (BD4842G), a MOS tube Q1 and a diode unit 91; the input end of the MOS tube Q1 is used for connecting an external power supply; the output end of the MOS tube Q1 is connected with the super capacitor module 6; the control end of the MOS tube Q1 is connected with the control output end of the voltage monitoring chip U1; the monitoring end of the voltage monitoring chip U1 is connected with the super capacitor module 6; the input end of the diode unit 91 is connected with the input end of the MOS tube Q1; the output end of the diode unit 91 is connected with the output end of the MOS tube Q1; for example, a monitoring threshold voltage of 4.2V is set, when the voltage is lower than 4.2V, the external power supply charges the super capacitor module 6, and the charging is automatically stopped. Figure 3 As shown in

[0058] Please refer to Figure 4 All external pins of the MEMS sensor 2 are connected with resistors with a preset resistance in series; in the embodiment, the preset resistance is 220Ω, that is, all external pins of the MEMS sensor 2 are connected with resistors (R39-R45) with 220Ω in series, which is used for reducing the conduction interference of the main control module 1 to the sensor.

[0059] Embodiment two

[0060] A vibration monitoring system includes at least two vibration monitoring devices as described in embodiment one; the vibration monitoring devices are connected through the Lora communication module 3 to form a Lora communication network, and communicate with each other through the Lora communication network.

[0061] Please refer to Figure 5 When applied to bridge monitoring, multiple vibration monitoring devices are installed in a distributed manner on the bridge; when distributed, according to the number of piers and the span size, 1-5 devices are installed between every two piers. If applied to a building, the vibration monitoring devices can be installed in the height, width and length directions according to the height, width and length of the building respectively. That is, the vibration monitoring devices can be independently installed to realize single-point vibration and inclination monitoring, or multiple devices can be distributed to realize synchronous monitoring of vibration and inclination information at different positions of the building.

[0062] The vibration monitoring device continuously collects vibration data when working; 4096 groups of three-axis vibration original data can be buffered in the vibration monitoring device; according to the collection frequency of 200 Hz, 4096 / 200≈20 seconds of vibration data can be buffered. When an abnormal information is monitored by a vibration monitoring device, the vibration monitoring device triggers the work, and immediately sends a trigger information in a broadcast form through the Lora communication module 3, the content of the trigger information includes a trigger time (which can be accurate to 0.1 second). After other devices receive the trigger information, 20 seconds of data is continuously collected from the trigger time, then data analysis is performed, and the data is reported to a data collection platform. At the same time, all monitoring points can send data at the same time to the collection platform, so that vibration condition information of different positions of the building at the same time point can be formed, and reliable data information for building structure safety analysis can be provided.

[0063] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent transformation, direct or indirect application in the related technical field by using the content of the present application specification and drawings is also included in the patent protection range of the present application.

Claims

1. A vibration monitoring device, characterized by The vibration monitoring device comprises a main control module, a MEMS sensor, a Lora communication module and a main communication module. The MEMS sensor is connected with a data transmission end of the main control module. The Lora communication module and the main communication module are respectively connected with communication ends of the main control module. The MEMS sensor is used for collecting vibration data. The Lora communication module is used for forming a Lora communication network with at least one adjacent Lora communication module in the vibration monitoring device. The main communication module is used for communicating with a monitoring host.

2. A vibration monitoring device according to claim 1, characterised in that The vibration monitoring device further comprises a power management module. An output end of the power management module is respectively connected with a power input end of the main control module, a power input end of the MEMS sensor, a power input end of the Lora communication module and a power input end of the main communication module.

3. A vibration monitoring device according to claim 2, wherein The vibration monitoring device further comprises a super capacitor module. The super capacitor module is connected with an input end of the power management module.

4. A vibration monitoring apparatus according to claim 3, wherein The vibration monitoring device further comprises a charging module. An input end of the charging module is used for connecting an external power supply. An output end of the charging module is connected with the super capacitor module.

5. A vibration monitoring apparatus according to claim 4, wherein The charging module comprises a voltage monitoring chip and a MOS tube. An input end of the MOS tube is used for connecting an external power supply. An output end of the MOS tube is connected with the super capacitor module. A control end of the MOS tube is connected with a control output end of the voltage monitoring chip. A monitoring end of the voltage monitoring chip is connected with the super capacitor module.

6. A vibration monitoring apparatus according to claim 5, wherein The vibration monitoring device further comprises a diode unit. An input end of the diode unit is connected with an input end of the MOS tube. An output end of the diode unit is connected with an output end of the MOS tube.

7. A vibration monitoring apparatus according to claim 2, wherein The vibration monitoring device further comprises a solar cell module and a data storage module. An output end of the solar cell module is connected with an input end of the power management module. The data storage module is connected with a data storage end of the main control module.

8. The vibration monitoring device of claim 1, wherein, All external pins of the MEMS sensor are connected with resistors with a preset resistance value.

9. The vibration monitoring apparatus of claim 1, wherein The main communication module comprises a Bluetooth communication module and a 4G communication module. The Bluetooth communication module and the 4G communication module are respectively connected with communication ends of the main control module.

10. A vibration monitoring system, characterized by The vibration monitoring device comprises at least two vibration monitoring devices as claimed in any one of claims 1-9. The vibration monitoring devices are connected through Lora communication modules to form a Lora communication network, and communicate with each other through the Lora communication network.

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