CN112082597A - Bridge detection system - Google Patents
Bridge detection system Download PDFInfo
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- CN112082597A CN112082597A CN202010821295.4A CN202010821295A CN112082597A CN 112082597 A CN112082597 A CN 112082597A CN 202010821295 A CN202010821295 A CN 202010821295A CN 112082597 A CN112082597 A CN 112082597A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Abstract
The invention provides a bridge detection system. The bridge detection system comprises an energy supply module, a sensor module and a processor module, wherein the sensor module is arranged at a position to be detected of a bridge and used for transmitting acquired data to be detected of the bridge to the processor module, the processor module is used for converting, acquiring, storing and processing the data detected by the sensor module, the energy supply module is used for supplying power to the sensor module and the processor module, the energy supply module comprises a vibration energy harvester, a charging circuit and a rechargeable battery, and the vibration energy harvester charges the rechargeable battery through the charging circuit. The bridge detection system provided by the invention can provide stable energy supply for the bridge detection system without additionally arranging a power supply.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a bridge detection system.
Background
During the construction and use of the bridge, various structures are damaged and deteriorated to different degrees due to the erosion of the environment and harmful substances, the effects of vehicles, fatigue, human factors and the like and the continuous degradation of the performance of the material. The traditional bridge detection depends on the experience of managers and technicians to a great extent, a scientific system method is lacked, information cannot be fed back in time, bridge diseases are not estimated sufficiently, and the service life of the bridge is shortened.
With the development of modern technologies, modern measurement technologies and communication technologies make bridge detection technology continuously progress. At present, bridge detection systems at home and abroad are mainly powered by cables or batteries, are matched with sensor data acquisition and are used for signal transmission through data lines. Numerous lines can generate certain potential safety hazards, large-scale sensing node arrangement is not facilitated, and the requirement of networked data acquisition is not met; when the battery is used for supplying energy, the long-term working capacity is limited, the environmental adaptability is low, the periodic replacement and maintenance cost of the battery is high, and the electric energy is unstable. Therefore, the novel electric energy supply mode of self-energy supply and the bridge detection device adopting the wireless data transmission mode are developed, the energy utilization efficiency is improved, the wireless detection requirement of the bridge is met, the bridge manager can know the safe operation condition of the bridge anytime and anywhere, and scientific decision making is assisted.
Adopt solar charging device or external charging device to provide the energy to collection system among the prior art, solar charging stability is relatively poor, and is required highly to the mounted position, and external charging needs to pass through cable connection remote power supply, and the limitation is higher.
Disclosure of Invention
The invention aims to provide a bridge detection system, which can provide stable energy supply for the bridge detection system without additionally arranging a power supply.
In order to achieve the above object, according to one aspect of the present invention, a bridge detection system is provided, including an energy supply module, a sensor module and a processor module, where the sensor module is disposed at a position to be detected of a bridge and is configured to send acquired data to be detected of the bridge to the processor module, the processor module is configured to convert, acquire, store and process the data detected by the sensor module, the energy supply module is configured to supply power to the sensor module and the processor module, the energy supply module includes a vibration energy harvester, a charging circuit and a rechargeable battery, and the vibration energy harvester charges the rechargeable battery through the charging circuit.
Preferably, the charging circuit comprises a power management chip and a peripheral circuit, the energy supply module further comprises a backup battery, the vibration energy harvester is connected with the backup battery through the peripheral circuit, and the power management chip is used for distributing the electric energy transmitted to the rechargeable battery and the backup battery by the vibration energy harvester.
Preferably, the sensor module includes a sensor unit and a sensor mount on which the sensor unit is mounted.
Preferably, the sensor unit is a passive sensor.
Preferably, the passive sensor comprises a vibration sensor, a displacement sensor and an acceleration sensor, the vibration sensor, the displacement sensor and the acceleration sensor are connected in parallel, and circuits where the vibration sensor, the displacement sensor and the acceleration sensor are located can be selectively communicated.
Preferably, the bridge detection system further comprises a wireless communication module, wherein the wireless communication module is connected with the processor module and can transmit data processed by the processor module to the outside.
Preferably, the processor module comprises a data acquisition chip, a processor chip and peripheral circuitry.
Preferably, the wireless communication module includes a wireless communication chip, a peripheral circuit, and an antenna for enlarging a communication distance of the wireless communication chip, the peripheral circuit being provided with a compensation unit for temperature compensation of a signal.
Preferably, the bridge sensor module further comprises a wireless gateway, and a wireless topology network structure is formed between the wireless gateway and the wireless communication module.
Preferably, the bridge detection system further comprises a cloud platform, the wireless gateway is in communication connection with the cloud platform and transmits data processed by the processor module to the cloud platform, and the cloud platform performs data processing after acquiring bridge real-time detection data and analyzes and predicts the health condition of the bridge.
The invention has the beneficial effects that:
the bridge detection system comprises an energy supply module, a sensor module and a processor module, wherein the sensor module is arranged at a position to be detected of a bridge and used for transmitting acquired data to be detected of the bridge to the processor module, the processor module is used for converting, acquiring, storing and processing the data detected by the sensor module, the energy supply module is used for supplying power to the sensor module and the processor module, the energy supply module comprises a vibration energy harvester, a charging circuit and a rechargeable battery, and the vibration energy harvester charges the rechargeable battery through the charging circuit.
The bridge detection system adopts the vibration energy harvester as an electric energy source to realize autonomous energy supply; the intelligent regulation and control of the charging current are realized by using a power management chip; the passive sensor can reduce the system power consumption, and different sensor units can be replaced aiming at different detection objects; and the low-power wireless data transmission is used and the mode switching is carried out by the processor, so that the power consumption is reduced, the wiring is not needed, and the cost is reduced. The detection system carries out cloud remote real-time monitoring through the wireless gateway. The invention has simple structure, green and environment-friendly energy source, strong adaptability, customized design and suitability for unattended and long-term working environment.
Drawings
FIG. 1 is a schematic structural diagram of a bridge inspection system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a signal transmission structure of a bridge detection system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples. These examples should not be construed as limiting the scope of the invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
Referring to fig. 1 and fig. 2, according to an embodiment of the present invention, a bridge detection system includes a self-powered bridge wireless detection apparatus, a wireless gateway, a cloud platform, and the like. The self-powered bridge wireless detection device is a core unit of a detection system, is placed at a part to be detected of a bridge and is responsible for detecting and acquiring bridge parameters and receiving and transmitting data. The wireless gateway is arranged at the node on the bridge and is responsible for summarizing and transferring data sent by the detection systems, and the data are sent to the cloud platform through the operator network by the intermediate base station. The cloud platform is responsible for processing data, analyzing big data and monitoring the health condition of the bridge in real time.
The self-powered bridge wireless detection device comprises an energy supply module, a sensor module, a microprocessor module and a wireless communication module, wherein all the modules are reasonably arranged and are arranged in a shell of the self-powered bridge wireless detection device. The energy supply module is connected with the microprocessor module and the wireless communication module, so that stable electric energy is provided for the microprocessor module and the wireless communication module, and stable work of the system is guaranteed. The sensor module is connected with the microprocessor module and sends the acquired bridge data to be measured to the microprocessor module through the serial port. The microprocessor module is connected with the wireless communication module, performs data conversion, acquisition, storage and processing, and performs dormancy control on the wireless communication module. The wireless communication module transmits the detection data to the wireless gateway in a wireless mode.
As shown in fig. 1, the energy supply module includes a vibration harvester, a charging circuit, and a rechargeable battery. The vibration energy harvester collects in-situ vibration energy in the environment by utilizing the micro-structure self-energy harvesting based on the piezoelectric effect of the piezoelectric material, and converts the in-situ vibration energy into electric energy to supply energy to a load device or charge an energy storage device through a charging circuit. The charging circuit comprises a power management chip LTC3331 and a peripheral circuit, and the electric energy generated by the vibration energy harvester is rectified, stabilized and transmitted. The power management chip has a double-input single-output function, can be input by the vibration energy harvester and can also be input by the standby battery, the stability of output charging current is ensured, the super capacitor is integrated, and the charging current is stably controlled by setting the threshold value of the super capacitor.
As shown in fig. 1, the energy supply module may further include a backup battery, when the vibration energy harvester generates sufficient electric quantity, the super capacitor charges the rechargeable battery, and the weak current is divided to slowly and stably charge the backup battery, and when the vibration energy harvester generates insufficient electric quantity, the backup battery supplements the electric quantity to realize the stabilization of the charging current. The rechargeable battery can adopt a rechargeable lithium battery, stable electric energy is provided for the microprocessor module and the wireless communication module, and long-term stable charging is carried out by the charging circuit.
As shown in fig. 1, the sensor module includes a sensor unit and a sensor mount. Preferably, the sensor units can be selected from passive sensors, a differential magnetic steel induction vibration principle is adopted, a passive closed-loop servo technology is utilized to obtain good low-frequency characteristics and impedance characteristics, external power supply is not needed, and the corresponding sensor units can be selected and replaced according to parameters to be measured of the bridge. The sensor unit comprises a vibration sensor, a displacement sensor, an acceleration sensor and the like, the three sensors are arranged in parallel, and circuits where the vibration sensor, the displacement sensor and the acceleration sensor are located can be selectively communicated, so that a proper sensor can be selected to be used according to needs, and the applicability of the bridge detection system is improved. The sensor installation seat directly and fixedly installs the sensor unit at the position to be measured of the bridge through the installation clamp.
The microprocessor module comprises a data acquisition chip, a processor chip and a peripheral circuit. The data acquisition chip can acquire the parameter information of the bridge to be detected by the sensor module through the cable and perform A/D signal conversion. The processor chip adopts the STM32 processor to carry out program operation, data storage and filtering algorithm calculation, and controls the operation of the wireless communication module, the working mode switching such as dormancy, further reduces the power consumption.
As shown in fig. 1, the wireless communication module includes a wireless communication chip, a peripheral circuit, and an antenna. The wireless communication chip adopts a CC1310 chip, long-time work of the system is guaranteed by virtue of an extremely low active radio frequency and a micro-control unit, the data compression and encryption functions are realized, and the communication distance can reach 1.5km by matching with an antenna. The peripheral circuit is provided with a temperature compensation crystal oscillator for temperature compensation, and the adaptability of the bridge detection system is improved.
According to the invention, the wireless gateway and the self-powered bridge wireless detection device form a wireless topology network structure, so that data transmission between the self-powered bridge wireless detection device and the network server is realized.
After the cloud platform acquires real-time bridge detection data, the data processing is carried out through a big data algorithm, the health condition of the bridge is analyzed and predicted, an early warning value can be set manually, when the detection data exceed the early warning value, the position of an early warning sensor is prompted and displayed on a platform interface, and reference is provided for workers.
The bridge detection system adopts the vibration energy harvester as an electric energy source to realize autonomous energy supply; the intelligent regulation and control of the charging current are realized by using a power management chip; the passive sensor can reduce the system power consumption, and different sensor units can be replaced aiming at different detection objects; and the low-power wireless data transmission is used and the mode switching is carried out by the processor, so that the power consumption is reduced, the wiring is not needed, and the cost is reduced. The detection system carries out cloud remote real-time monitoring through the wireless gateway. The invention has simple structure, green and environment-friendly energy source, strong adaptability, customized design and suitability for unattended and long-term working environment.
The foregoing is only a preferred application of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the technical principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A bridge detection system is characterized by comprising an energy supply module, a sensor module and a processor module, wherein the sensor module is arranged at a position to be detected of a bridge and used for sending collected data to be detected of the bridge to the processor module, the processor module is used for converting, collecting, storing and processing the data detected by the sensor module, the energy supply module is used for supplying power to the sensor module and the processor module, the energy supply module comprises a vibration energy harvester, a charging circuit and a rechargeable battery, and the vibration energy harvester charges the rechargeable battery through the charging circuit.
2. The bridge detection system of claim 1, wherein the charging circuit comprises a power management chip and a peripheral circuit, the energy supply module further comprises a backup battery, the vibration harvester is connected to the backup battery through the peripheral circuit, and the power management chip is configured to distribute the electric energy transmitted by the vibration harvester to the rechargeable battery and the backup battery.
3. The bridge inspection system of claim 1 or 2, wherein the sensor module comprises a sensor unit and a sensor mount, the sensor unit being mounted on the sensor mount.
4. The bridge detection system of claim 3, wherein the sensor unit is a passive sensor.
5. The bridge detection system of claim 4, wherein the passive sensors comprise a vibration sensor, a displacement sensor and an acceleration sensor, the vibration sensor, the displacement sensor and the acceleration sensor are connected in parallel, and circuits of the vibration sensor, the displacement sensor and the acceleration sensor can be selectively communicated.
6. The bridge detection system according to any one of claims 1 to 5, wherein the bridge detection device further comprises a wireless communication module, the wireless communication module is connected with the processor module and is capable of transmitting data processed by the processor module to the outside.
7. The bridge detection system of claim 1, wherein the processor module comprises a data acquisition chip, a processor chip, and peripheral circuitry.
8. The bridge detection system according to claim 6, wherein the wireless communication module includes a wireless communication chip, a peripheral circuit, and an antenna for expanding a communication distance of the wireless communication chip, the peripheral circuit being provided with a compensation unit for temperature compensation of a signal.
9. The bridge detection system of claim 6, wherein the bridge sensor module further comprises a wireless gateway, and a wireless topology network structure is formed between the wireless gateway and the wireless communication module.
10. The bridge detection system of claim 1, further comprising a cloud platform, wherein the wireless gateway is communicatively connected to the cloud platform and transmits the data processed by the processor module to the cloud platform, and the cloud platform performs data processing after acquiring the real-time bridge detection data and analyzes and predicts the health condition of the bridge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010821295.4A CN112082597A (en) | 2020-08-14 | 2020-08-14 | Bridge detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010821295.4A CN112082597A (en) | 2020-08-14 | 2020-08-14 | Bridge detection system |
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| CN112082597A true CN112082597A (en) | 2020-12-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176055A (en) * | 2021-04-22 | 2021-07-27 | 中煤科工集团重庆研究院有限公司 | Long-endurance power supply device for concrete stress-strain detection |
| CN116295811A (en) * | 2023-05-18 | 2023-06-23 | 华东交通大学 | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor |
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| JP2019132797A (en) * | 2018-02-02 | 2019-08-08 | 東芝テック株式会社 | Sensor device |
| CN110111552A (en) * | 2019-05-10 | 2019-08-09 | 上海勒君建设工程技术有限公司 | A kind of bridge multipoint multi-channel strain wireless monitor system based on ZigBee |
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2020
- 2020-08-14 CN CN202010821295.4A patent/CN112082597A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162740A (en) * | 2011-12-19 | 2013-06-19 | 西安迅腾科技有限责任公司 | Bridge health monitoring system provided with power supply fault message prompting function |
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| CN103017825A (en) * | 2012-12-04 | 2013-04-03 | 浙江大学 | Wireless bridge health monitoring device with multi-energy supply |
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| CN207434912U (en) * | 2017-10-11 | 2018-06-01 | 清远恒通电子科技有限公司 | Bridge construction tower crane safety monitoring system based on Internet of Things |
| JP2019132797A (en) * | 2018-02-02 | 2019-08-08 | 東芝テック株式会社 | Sensor device |
| CN110111552A (en) * | 2019-05-10 | 2019-08-09 | 上海勒君建设工程技术有限公司 | A kind of bridge multipoint multi-channel strain wireless monitor system based on ZigBee |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176055A (en) * | 2021-04-22 | 2021-07-27 | 中煤科工集团重庆研究院有限公司 | Long-endurance power supply device for concrete stress-strain detection |
| CN116295811A (en) * | 2023-05-18 | 2023-06-23 | 华东交通大学 | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor |
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