Monitoring data acquisition equipment with self-powered structure

Abstract

The utility model relates to the technical field of self-powered equipment, and discloses self-powered structure monitoring data acquisition equipment, which comprises a mounting box, a cloud platform, an acquisition instrument, a wireless communication module, a digital terminal unit, a conversion module, a digital sensor, a vibrating wire sensor and a power supply unit, the cloud platform is in communication connection with the acquisition instrument through the wireless communication module; the acquisition instrument is electrically connected with the digital terminal unit, the conversion module, the digital sensor, the vibrating wire sensor and the power supply unit respectively; the acquisition instrument, the wireless communication module, the digital terminal unit, the conversion module and the power supply unit are all mounted on the mounting box; the installation box, the digital sensor and the vibrating wire sensor are all installed on a bridge head. According to the monitoring data acquisition equipment with the self-powered structure, the energy collection module manufactured on the basis of piezoelectric ceramics realizes collection of bridge vibration energy, and the collected energy is converted into stable direct-current electric energy and is stored and managed, so that power is supplied to bridge sensing equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of self-powered equipment, in particular to a self-powered structure monitoring data acquisition device. Background Art

[0002] In the widespread application of lightweight bridge monitoring technology, distributed, low-power sensing devices have become the core component of the monitoring system. However, the power supply problem of these devices has become one of the key factors restricting their sustained and stable operation. Although the mains power supply is adopted as the traditional power supply method, independent power supply technologies such as solar panels and batteries are also widely used due to their unique advantages.

[0003] However, solar panels are limited by weather conditions and cannot effectively provide power on rainy days; while batteries face problems such as limited service life, insufficient energy storage, and high maintenance and replacement costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a self-powered structure monitoring data acquisition device to solve the above technical problems.

[0005] A self-powered structure monitoring data acquisition device, comprising an installation box, a cloud platform, a collector, a wireless communication module, a digital terminal unit, a conversion module, a digital sensor, a vibrating string sensor and a power supply unit;

[0006] The cloud platform is connected to the data collector via the wireless communication module, and is used to receive data sent by the data collector;

[0007] The collector is electrically connected to the digital terminal unit, the conversion module, the digital sensor, the vibrating string sensor, and the power supply unit respectively, and is responsible for collecting and preliminarily processing the data and sending the data to the cloud platform;

[0008] The collector, wireless communication module, digital terminal unit, conversion module and power supply unit are all installed on the installation box;

[0009] The installation box, digital sensor and vibrating wire sensor are all installed on the bridge head.

[0010] Furthermore, the digital sensor includes a tilt sensor and a displacement sensor.

[0011] Furthermore, the vibrating wire sensor includes a strain sensor and a crack sensor.

[0012] Furthermore, the power supply unit includes a power supply and an electric energy collection module, and the power supply is electrically connected to the electric energy collection module.

[0013] Further, the electric energy collection module includes piezoelectric ceramic X1, single-phase bridge rectifier D1, capacitor C1, resistor R1, resistor R2, resistor R3, resistor R4, transistor Q6, transistor Q7, transistor Q8, transistor Q10, voltage-stabilizing transistor U1, voltage-stabilizing transistor U2 and output jumper H1;

[0014] The two output ends of the piezoelectric ceramic X1 are respectively connected to the two input ends of the single-phase bridge rectifier D1, and the negative electrode of the single-phase bridge rectifier D1 is connected to the ground and the negative electrode of the capacitor C1;

[0015] One end of the resistor R1 is connected to one end of the resistor R3, a common point of the resistors R1 and R3 is connected to the base of the transistor Q10, a drain of the transistor Q8 is connected to the emitter of the transistor Q10 and the other end of the resistor R3, a source of the transistor Q8 is connected to the ground, a gate of the transistor Q8 is connected to the gate of the transistor Q7 and one end of the resistor R2, and the other end of the resistor R2 is connected to the other end of the resistor R1;

[0016] The source of the transistor Q6, one end of the resistor R4, the collector of the transistor Q10, the positive electrode of the single-phase bridge rectifier D1, and the positive electrode of the capacitor C1 are connected to the common point of the resistor R2 and the resistor R1, the drain of the transistor Q7 is connected to the gate of the transistor Q6 and the other end of the resistor R4, and the source of the transistor Q7 is connected to the ground;

[0017] The drain of the transistor Q6 is respectively connected to the two input ends of the output jumper H1, the two output ends of the output jumper H1 are respectively connected to the input ends of the voltage-stabilizing transistor U1 and the voltage-stabilizing transistor U2, the negative electrodes of the voltage-stabilizing transistor U1 and the voltage-stabilizing transistor U2 are both connected to the ground, the output end of the voltage-stabilizing transistor U1 is connected to 5V, and the output end of the voltage-stabilizing transistor U2 is connected to 3.3V.

[0018] The utility model adopting the above technical solution has the following advantages:

[0019] The energy collection module of the utility model, which is made based on piezoelectric ceramics, realizes the collection of bridge vibration energy, converts the collected energy into stable direct current electricity and stores and manages it, thereby powering the bridge sensing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1The utility model is a circuit structure diagram of an electric energy collection module in a self-powered structure monitoring data acquisition device. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should be the common meanings understood by technicians in the field to which the utility model belongs. The terms "first", "second", etc. in the specification and claims of the embodiment of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to implement the embodiment of the present disclosure described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. Unless otherwise specified, the term "multiple" means two or more. In the embodiment of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B. The term "and / or" is a description of the association relationship of objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B. The term "corresponding" can refer to an association relationship or a binding relationship, and A and B corresponding to each other means that there is an association relationship or a binding relationship between A and B.

[0024] like Figure 1 As shown, a self-powered structure monitoring data acquisition device of the utility model includes an installation box, a cloud platform, a collector, a wireless communication module, a digital terminal unit, a conversion module, a digital sensor, a vibrating string sensor and a power supply unit;

[0025] The cloud platform is connected to the data collector via a wireless communication module to receive data sent by the data collector;

[0026] The collector is electrically connected to the digital terminal unit, the conversion module, the digital sensor, the vibrating string sensor, and the power supply unit. The collector is responsible for data collection and preliminary processing, and sends the data to the cloud platform.

[0027] The collector, wireless communication module, digital terminal unit, conversion module and power supply unit are all installed on the installation box;

[0028] The mounting box, digital sensor and vibrating wire sensor are all installed on the bridge head.

[0029] Specifically, the utility model realizes remote, real-time, and autonomous monitoring of bridges by integrating key components such as an installation box, a cloud platform, a collector, a wireless communication module, a digital terminal unit, a conversion module, a digital sensor, a vibrating string sensor, and a power supply unit. It can not only improve the efficiency and accuracy of monitoring, but also reduce labor costs and maintenance difficulties, providing a strong guarantee for the safe operation of structures.

[0030] Specifically, the wireless communication module is responsible for communicating with the cloud platform through wireless communication technologies (such as Wi-Fi, 5G, etc.).

[0031] Specifically, the conversion module is responsible for converting the analog signal collected by the vibrating string sensor into a digital signal and transmitting it to the digital transmission unit.

[0032] The digital transmission unit is responsible for the transmission and processing of digital signals inside the device, receiving the digital signals from the conversion module and sending them to the wireless communication module for wireless transmission to the cloud platform for remote storage and analysis; at the same time, the data transmission unit also receives wireless signals from the wireless communication module (i.e., instructions or data from the cloud platform) and forwards them to the collector for subsequent processing.

[0033] In some embodiments, the digital sensor includes a tilt sensor and a displacement sensor.

[0034] In some embodiments, the vibrating wire sensor includes a strain sensor and a crack sensor.

[0035] Specifically, the tilt sensor is used to measure the tilt angle of a structure to assess its stability and safety. The tilt sensor usually outputs a digital signal, which is convenient for direct access to a digital transmission unit for processing.

[0036] Displacement sensor: used to measure the displacement change of a certain point on the structure to monitor its deformation. Similarly, the displacement sensor also outputs a digital signal, which is convenient for direct access to the digital transmission unit for processing.

[0037] Strain sensor: Based on the principle of vibrating wire, it measures the strain change of a structure under force. The vibrating wire strain sensor indirectly reflects the strain value by measuring the change in the frequency of the vibrating wire. Its output signal is an analog signal, which needs to be converted into a digital signal through a conversion module.

[0038] Crack sensor: The crack sensor is used to detect cracks on the surface of the structure. Its output signal is an analog signal, which needs to be converted into a digital signal through a conversion module.

[0039] Specifically, the above-mentioned structures in this embodiment all refer to bridges.

[0040] In some embodiments, the power supply unit includes a power supply (DC24V) and an electric energy collection module, and the power supply is electrically connected to the electric energy collection module.

[0041] Specifically, the power supply provides the main power support for the entire device, ensuring that each component can work normally. The DC24V power supply has a lower voltage, reducing the risk of electric shock, while also helping to reduce energy consumption and extend the life of the device.

[0042] The power harvesting module is responsible for collecting energy from the environment and converting it into electrical energy for power supply. The existence of the power harvesting module enables the device to continue to operate without external power input, improving the self-powering capability and independence of the system.

[0043] In some embodiments, the electric energy collection module includes a piezoelectric ceramic X1, a single-phase bridge rectifier D1, a capacitor C1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a transistor Q6 (field effect transistor), a transistor Q7 (field effect transistor), a transistor Q8 (field effect transistor), a transistor Q10 (transistor), a voltage regulator transistor U1, a voltage regulator transistor U2 and an output jumper H1;

[0044] The two output ends of the piezoelectric ceramic X1 are respectively connected to the two input ends of the single-phase bridge rectifier D1, and the negative electrode of the single-phase bridge rectifier D1 is connected to the ground and the negative electrode of the capacitor C1;

[0045] One end of the resistor R1 is connected to one end of the resistor R3, a common point of the resistors R1 and R3 is connected to the base of the transistor Q10, a drain of the transistor Q8 is connected to the emitter of the transistor Q10 and the other end of the resistor R3, a source of the transistor Q8 is connected to the ground, a gate of the transistor Q8 is connected to the gate of the transistor Q7 and one end of the resistor R2, and the other end of the resistor R2 is connected to the other end of the resistor R1;

[0046] The source of transistor Q6, one end of resistor R4, the collector of transistor Q10, the positive electrode of single-phase bridge rectifier D1, and the positive electrode of capacitor C1 are connected to the common point of resistor R2 and resistor R1, the drain of transistor Q7 is connected to the gate of transistor Q6 and the other end of resistor R4, and the source of transistor Q7 is connected to ground;

[0047] The drain of transistor Q6 is connected to the two input terminals of output jumper H1 respectively, the two output terminals of output jumper H1 are connected to the input terminals of voltage-regulating transistor U1 and voltage-regulating transistor U2 respectively, the negative terminals of voltage-regulating transistor U1 and voltage-regulating transistor U2 are both connected to ground, the output terminal of voltage-regulating transistor U1 is connected to 5V, and the output terminal of voltage-regulating transistor U2 is connected to 3.3V.

[0048] Specifically, piezoelectric ceramics X1: As the core component of energy collection, piezoelectric ceramics can convert mechanical energy (such as vibration, pressure change, etc.) into electrical energy. When external mechanical force acts on piezoelectric ceramics, a voltage difference will be generated at its two output ends, thereby outputting electrical energy.

[0049] Single-phase bridge rectifier D1: Since the piezoelectric ceramic outputs alternating current (AC), the function of the single-phase bridge rectifier D1 is to convert the AC into direct current (DC). The negative pole of the rectifier is connected to the ground, and the positive pole outputs the rectified DC voltage.

[0050] Capacitor C1: As a filter capacitor, C1 is used to smooth the rectified DC voltage, reduce voltage fluctuations, and improve the stability of subsequent circuits.

[0051] Resistors R1, R2, R3, and R4: These resistors act as voltage dividers and current limiters in the circuit, helping to adjust the potential at various points to ensure that the circuit works as expected.

[0052] Transistors Q6, Q7, Q8 (field effect transistors) and Q10 (transistor): These transistors form the amplification and switching parts of the circuit. Among them, Q6, Q7, Q8 form a current mirror circuit structure for adjusting or stabilizing the current. Q10 is used to detect or control the voltage or current in the circuit.

[0053] Regulator transistors U1 and U2: These two zener diodes stabilize the output voltage of the circuit at 5V and 3.3V respectively.

[0054] Output jumper H1: This jumper is used to test or selectively connect different output paths. In practical applications, it allows users to select 5V or 3.3V output as needed.

[0055] Specifically, the energy collection module of the utility model, which is made based on piezoelectric ceramics, realizes the collection of bridge vibration energy, converts the collected energy into stable direct current power and stores and manages it, thereby powering the bridge sensing equipment.

[0056] In some embodiments, either end of the piezoelectric ceramic is installed on the roadbed side of the bridge head (similar to dynamic weighing), the bottom of the mid-span beam, and the support.

[0057] Specifically, the roadbed side of the bridge head: based on the dynamic load generated when the vehicle passes through the bridge head. When the vehicle passes the bridge head, the roadbed will be subjected to dynamic pressure, which can be effectively converted into electrical energy by piezoelectric ceramics. This application is similar to a dynamic weighing system that can capture and convert the vibration energy caused by the weight of the vehicle.

[0058] Mid-span beam bottom: The mid-span part of the bridge is the key position to bear bending moment and shear force. When the bridge is affected by external factors such as vehicle changes, the mid-span beam bottom will produce corresponding deformation or vibration. Installing piezoelectric ceramics at these locations can effectively collect this vibration energy.

[0059] At the bearing: The bridge bearing is a key component connecting the upper and lower structures of the bridge. It not only bears the deadweight of the bridge, but also bears the effects of various live loads (such as vehicles, people, etc.). Installing piezoelectric ceramics at the bearing can capture the bearing deformation or vibration caused by these loads and convert it into electrical energy.

[0060] In some embodiments, a limiting device (not shown) is installed at the free end of the piezoelectric ceramic. The limiting device is conventional.

[0061] Specifically, the main function of the limiter is to limit the deformation of the piezoelectric ceramic when it is subjected to excessive mechanical stress, thereby preventing it from being damaged due to overload. In a dynamic environment, such as on a bridge, the piezoelectric ceramic may be subjected to sudden, large-amplitude vibration or impact, which may cause excessive stress or strain inside the ceramic. The limiter can effectively absorb or disperse this energy, protecting the piezoelectric ceramic from damage, thereby extending its service life.

[0062] In some embodiments, the piezoelectric ceramic uses a bi-crystal piezoelectric ceramic (20*80 mm).

[0063] Specifically, bimorph piezoelectric ceramics have higher piezoelectric constants and sensitivity than single crystal piezoelectric ceramics, and can generate more electrical energy under the same mechanical stress.

[0064] Specifically, piezoelectric ceramics are small in size, not easily damaged, and capable of non-inductive monitoring.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A self-powered structure monitoring data acquisition device, characterized in that: include: Installation box, cloud platform, data collector, wireless communication module, digital terminal unit, conversion module, digital sensor, vibrating string sensor and power supply unit; The cloud platform is connected to the data collector via the wireless communication module, and is used to receive data sent by the data collector; The collector is electrically connected to the digital terminal unit, the conversion module, the digital sensor, the vibrating string sensor, and the power supply unit respectively, and is responsible for collecting and preliminarily processing the data and sending the data to the cloud platform; The collector, wireless communication module, digital terminal unit, conversion module and power supply unit are all installed on the installation box; The installation box, digital sensor and vibrating wire sensor are all installed on the bridge head.

2. A self-powered structure monitoring data acquisition device according to claim 1, characterized in that: The digital sensor includes a tilt sensor and a displacement sensor.

3. The self-powered structure monitoring data acquisition device according to claim 1, characterized in that: The vibrating wire sensor includes a strain sensor and a crack sensor.

4. The self-powered structure monitoring data acquisition device according to claim 1, characterized in that: The power supply unit includes a power supply and an electric energy collection module, and the power supply is electrically connected to the electric energy collection module.

5. A self-powered structure monitoring data acquisition device according to claim 4, characterized in that: The electric energy collection module includes a piezoelectric ceramic X1, a single-phase bridge rectifier D1, a capacitor C1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a transistor Q6, a transistor Q7, a transistor Q8, a transistor Q10, a voltage-stabilizing transistor U1, a voltage-stabilizing transistor U2 and an output jumper H1; The two output ends of the piezoelectric ceramic X1 are respectively connected to the two input ends of the single-phase bridge rectifier D1, and the negative electrode of the single-phase bridge rectifier D1 is connected to the ground and the negative electrode of the capacitor C1; One end of the resistor R1 is connected to one end of the resistor R3, a common point of the resistors R1 and R3 is connected to the base of the transistor Q10, a drain of the transistor Q8 is connected to the emitter of the transistor Q10 and the other end of the resistor R3, a source of the transistor Q8 is connected to the ground, a gate of the transistor Q8 is connected to the gate of the transistor Q7 and one end of the resistor R2, and the other end of the resistor R2 is connected to the other end of the resistor R1; The source of the transistor Q6, one end of the resistor R4, the collector of the transistor Q10, the positive electrode of the single-phase bridge rectifier D1, and the positive electrode of the capacitor C1 are connected to the common point of the resistor R2 and the resistor R1, the drain of the transistor Q7 is connected to the gate of the transistor Q6 and the other end of the resistor R4, and the source of the transistor Q7 is connected to the ground; The drain of the transistor Q6 is respectively connected to the two input ends of the output jumper H1, the two output ends of the output jumper H1 are respectively connected to the input ends of the voltage-stabilizing transistor U1 and the voltage-stabilizing transistor U2, the negative electrodes of the voltage-stabilizing transistor U1 and the voltage-stabilizing transistor U2 are both connected to the ground, the output end of the voltage-stabilizing transistor U1 is connected to 5V, and the output end of the voltage-stabilizing transistor U2 is connected to 3.3V.

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