CN112525399A - Road and bridge stress detection system - Google Patents
Road and bridge stress detection system Download PDFInfo
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- 230000008569 process Effects 0.000 claims abstract description 6
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- 239000003990 capacitor Substances 0.000 claims description 7
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- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 50
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- 230000036541 health Effects 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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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
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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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Abstract
The invention discloses a road and bridge stress detection system, which comprises a stress sensor module, a signal reader-writer module and a signal relay gateway module, wherein the stress sensor module is used for detecting the stress of a road and bridge; the stress sensor module comprises an energy receiving antenna, an energy conversion module, an energy storage unit, a plurality of stress sensors, a micro control unit and an RF module; the stress sensor module is arranged on the vehicle, the stress sensor module is in wireless communication with the signal reader module, the signal reader module comprises a GPRS (general packet radio service) module, the signal reader module receives stress detection data sent by the stress sensor module through wireless and sends the data to the cloud platform after processing, and the cloud platform displays, processes and stores the data after receiving the data; the signal relay gateway comprises a CPU, a GPRS module, a gateway RF module and a remote wireless charging base station. The invention can quickly acquire the data of the pre-buried stress sensor in a larger distance range, judge the road condition and facilitate maintenance.
Description
Technical Field
The invention belongs to the technical field of sensors, and particularly relates to a detection system for reliably supplying power to a sensor embedded in a road and bridge structure and automatically reading data.
Background
With the development of infrastructure roads and bridges in large areas in China, a large number of roads and bridges operated on line are provided. In recent years, road collapse and bridge collapse have occurred. How to predict its health is an increasingly urgent need. The traditional methods include the following methods: the characteristics of cracks, pits and the like on the surfaces of roads and bridges are collected and analyzed through videos and pictures; judging the structure dislocation by analyzing the spectrums at the transmitting end and the receiving end through the embedded optical fiber; and reading the stress data through the embedded wired sensor. These means also play a certain role in the actual management and maintenance process.
The video image acquisition and the acquisition and analysis mode of the optical fiber sensor can be sensed only when the detected road bridge causes the phenomena of internal displacement, deformation, cracks and the like, and early warning cannot be caused in earlier stages.
The method of the pre-buried wired sensor can effectively solve the problems, but the factors such as circuit aging, heavy vehicle rolling and the like often cause the faults of a power supply line and a communication line along with the use of a road. The maintenance cost is high, and the sensors are generally required to be pre-embedded on core stress nodes of the road bridge, so that the process of opening the surface coverings of the sensors causes irreparable loss to the road health.
Chinese patent CN104155041A is a wireless passive prestress detection system, which discloses a wireless passive prestress detection system for steel cable prestress in concrete. The whole system comprises a pre-embedded wireless passive prestress sensor and an external middle-distance radio frequency reader, wherein the middle-distance radio frequency reader realizes the dual functions of wirelessly providing energy for the prestress sensor and receiving data. The solution is to use a passive RFID chip that can be built into the building road component and read data through a sensor connected to it. The induction distance of the passive RFID chip in the free space can reach about 2-5 meters, but after the passive RFID chip is built in, the induction electromagnetic wave is weak under the influence of concrete, and sufficient electric quantity is difficult to provide, and especially in special application scenes such as the situation that the chip is implanted into a concrete structure, the induction distance is greatly shortened. Even if low power consumption is adopted, the passive RFID chip cannot continue to work after the built-in battery capacity of the passive RFID chip is consumed by the sensor, and data cannot be actively sent.
In addition, the RFID chips are arranged on the road and the bridge, and data reading needs to be carried out along the line by utilizing an RFID reader. Stress sensor module is big in quantity among the road and bridge, lacks the integrative device that combines of a reader and vehicle, the road surface of passing fast to can collect the data of pre-buried stress sensor in the great distance scope.
Disclosure of Invention
The invention aims to provide a road and bridge stress detection system, which provides two parallel schemes for wireless power supply of a stress sensor module, active data transmission and data reading of a signal reader-writer module, wherein the stress sensor module can automatically collect radio frequency energy emitted by a remote wireless charging base station and supply power for the stress sensor module, and convert a received digital signal into a radio frequency signal to be actively output, and the signal reader-writer module can quickly acquire data of a pre-embedded stress sensor in a large distance range.
The technical scheme provided by the invention is as follows: a road and bridge stress detection system comprises a stress sensor module, a signal reader-writer module and a signal relay gateway module;
the stress sensor module comprises an energy receiving antenna, an energy conversion module, an energy storage unit, a plurality of stress sensors, a micro control unit and an RF module; the stress sensor and the RF module are respectively connected with the micro control unit, the energy storage unit supplies power to the stress sensor, the RF module and the micro control unit, and the energy receiving antenna is connected with the energy storage unit through the energy conversion module;
the stress sensor module is in wireless communication with the signal reader module, the signal reader module comprises a first GPRS module and is connected with the cloud platform through a wireless network, the signal reader module receives stress detection data sent by the stress sensor module through wireless and sends the data to the cloud platform after processing, and the cloud platform displays, processes and stores the data after receiving the data;
the signal relay gateway comprises a CPU, a second GPRS module, a gateway RF module and a remote wireless charging base station; one end of the second GPRS module is connected with the cloud platform, the other end of the second GPRS module is connected with the CPU, one end of the gateway RF module is connected with the RF module of the stress sensor module, the other end of the gateway RF module is connected with the CPU, and the remote wireless charging base station emits electromagnetic waves with fixed frequency points to carry out remote wireless charging on an energy receiving antenna of the stress sensor module.
Preferably, the energy storage unit adopts a super capacitor, the energy receiving antenna adopts a ceramic patch antenna, the energy conversion module is composed of a P2110B energy conversion chip and a peripheral circuit thereof, the energy receiving antenna and the energy conversion module are connected after impedance matching, and the energy conversion module is respectively connected with the super capacitor.
Preferably, the ceramic patch antenna has a plurality of pieces.
Preferably, the micro control unit adopts a 32-bit low-power ARM processor STM32L053R8T6, and the RF module communication adopts CC3000 MODT.
Preferably, the stress sensor adopts a concrete strain gauge and/or a steel bar strain gauge.
Preferably, the cloud platform comprises a cloud platform and a Web end, and the cloud platform and the Web end communicate through an HTTP (hyper text transport protocol).
Preferably, the signal relay gateway further comprises a solar panel management module, and the solar panel management module is used for supplying power through a solar panel.
Preferably, the signal reader-writer device further comprises a lifting device arranged on the surface of the engineering truck, the lifting device comprises a stepping motor fixed on the surface of the engineering truck, a screw rod connected with the stepping motor, a moving plate arranged on the screw rod and capable of moving up and down along with the rotation of the screw rod, and a pair of guide pillars arranged at two ends of the moving plate, a moving nut matched with the screw rod is arranged on the moving plate, guide holes matched with the guide pillars are arranged at the left end and the right end of the moving plate, connecting blocks are arranged at two ends of the guide pillars and connected to the surface of the engineering truck through the connecting blocks.
The scheme has the advantages that:
1. the energy receiving antenna can be difficult to acquire sufficient energy, so that a remote wireless charging base station is arranged at a position where more stress sensor modules are arranged in a road bridge, charging of the stress sensor modules is achieved, and continuous working is achieved.
2. Two parallel schemes of wireless power supply, active data transmission and data reading of a signal reader-writer module for a stress sensor module are provided, the stress sensor module can automatically collect radio frequency energy emitted by a long-distance wireless charging base station and supply power for the stress sensor module, and received digital signals are converted into radio frequency signals to be actively output. When the signal relay gateway does not cover the road section of the stress sensor module, the vehicle-mounted signal reader-writer module can quickly acquire the data of the pre-buried stress sensor in a large distance range.
3. The lifting function of the signal reader-writer module is realized through the lifting device arranged on the surface of the engineering truck, so that the signal reader-writer module is suitable for conducting line fault detection on different roads, and the stress sensor module in the embedded concrete is better reduced in height detection.
4. On the basis of collecting comprehensive stress data, along with the improvement of an algorithm, the number of actual verification models is rich, and more scientific prediction results can be formed. The road bridge health prediction is introduced into a continuously alternating and optimized track.
Drawings
Fig. 1 is a schematic perspective view of a signal loading reader/writer module according to the present invention.
Fig. 2 is a partially enlarged view of a portion of fig. 1A.
Fig. 3 is another perspective view of the present invention.
Fig. 4 is a partially enlarged view of fig. 3B.
FIG. 5 is a schematic diagram of a circuit module according to the present invention.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the present invention is further described below with reference to the accompanying drawings and the detailed description.
As shown in fig. 5, a road and bridge stress detection system includes a stress sensor module 10, a signal reader module 20, and a signal relay gateway module 30.
The stress sensor module 10 comprises an energy receiving antenna 101, an energy conversion module 102, an energy storage unit 103, several stress sensors 104, a micro control unit 105 and an RF module 106. The stress sensor 104 and the RF module 106 are respectively connected to the micro control unit 105, the energy storage unit 103 supplies power to the stress sensor 104, the RF module 106 and the micro control unit 105, and the energy receiving antenna 101 is connected to the energy storage unit 103 through the energy conversion module 102.
The signal reader module 20 is deployed on a vehicle, the signal reader module 20 is in wireless communication with the stress sensor module 10, the signal reader module 20 comprises a first GPRS module 201 and is connected with the cloud platform 40 through a wireless network, the signal reader module 20 receives stress detection data sent by the stress sensor module 10 through wireless and sends the data to the cloud platform 40 after processing the data, and the cloud platform 40 displays, processes and stores the data after receiving the data.
The signal relay gateway 30 is arranged near a road bridge with a built-in stress sensor and comprises a CPU301, a second GPRS module 302, a gateway RF module 303 and a long-distance wireless charging base station 304. One end of the second GPRS module 302 is connected to the cloud platform 40, the other end of the second GPRS module is connected to the CPU301, one end of the gateway RF module 303 is connected to the RF module 106 of the stress sensor module 10, the other end of the gateway RF module is connected to the CPU301, and the remote wireless charging base station 304 transmits electromagnetic waves with fixed frequency points to perform remote wireless charging on the energy receiving antenna 101 of the stress sensor module.
The stress sensor module is arranged at a key stress point inside a road or a bridge, the stress sensor module collects radio frequency energy sent by a remote wireless charging base station so as to supply power to the module, and the energy receiving antenna continuously collects and stores the radio wave energy to the energy storage unit. However, the energy receiving antenna is difficult to acquire sufficient energy, so that a long-distance wireless charging base station is arranged at a place where more stress sensor modules are arranged in a road bridge, so that the stress sensor modules are charged, and continuous operation is realized.
The energy storage unit adopts a super capacitor, the energy receiving antenna is connected with the energy conversion module after impedance matching, and the energy conversion module is connected with the super capacitor. The energy receiving antenna adopts a ceramic patch antenna with the center frequency of 1015MHz, the ceramic patch antenna is provided with a plurality of pieces, and a multi-antenna structure can obtain radio frequency energy in a larger range. Receiving electromagnetic waves transmitted by a remote wireless charging base station and converting the electromagnetic waves into high-frequency direct current; the energy conversion module is composed of a P2110B energy conversion chip and a peripheral circuit thereof, converts high-frequency direct current generated by the antenna into low-frequency direct current and stores the low-frequency direct current in the super capacitor; the stress sensor adopts a concrete strain gauge and/or a steel bar strain gauge. The data acquired by the stress sensor are sent to the RF module through the micro-control unit, and the RF module converts the digital signals into radio frequency signals to be output. The micro control unit adopts a 32-bit low-power consumption ARM processor STM32L053R8T6, and the RF module communication adopts CC3000 MODT. The initial content of the memory connected with the micro control unit comprises the fixed position, the number, the binding data and the scanning initialization data of the micro control unit.
The cloud platform comprises a cloud platform and a Web end, the cloud server is communicated with the Web end through an HTTP protocol, and a solar panel management module is embedded in the cloud server.
The energy receiving antenna is made of FR-4 Printed Circuit Board (PCB) material, and the energy receiving antenna also comprises a conductive Light Emitting Diode (LED) for indicating the energy captured at the voltage value between 0.01Vdc and 3.94 Vdc. The energy receiving antenna is composed of a microwave antenna, a pre-rectifying filter, a rectifying circuit and a direct current Low Pass Filter (LPF) for rectifying input Electromagnetic (EM) waves into direct current. The rectifying circuit may be any of a variety of types such as a full wave bridge rectifier or a full wave rectifier employing a single shunt. In order to achieve optimal power transfer, a Low Pass Filter (LPF) is used for impedance matching between the antenna and the rectifier. Once the signal is rectified, a dc low pass filter is used to smooth out the output dc voltage and current by attenuating high frequency harmonics in the rf signal present in the environment. The maximum power is collected before the energy is delivered to the rectifying diode, and then the harmonics generated by the diode and radiated from the antenna as lost power are suppressed. The remote wireless charging base station is a radio frequency transmitting station, the reader sends a radio frequency signal with a certain frequency through a transmitting antenna, when the radio frequency card enters a working area of the transmitting antenna, induction current is generated, and the radio frequency card is activated by acquiring energy; the radio frequency card sends out information such as self codes and the like through a built-in sending antenna of the card; the energy receiving antenna receives a carrier signal sent from the radio frequency card, the carrier signal is one of electromagnetic waves, and the energy receiving antenna transmits the carrier signal to the energy conversion module to be converted into energy which is stored in the energy storage module.
Referring to fig. 1-4, the signal reader/writer module 20 is a rectangular housing and can be mounted on a lifting device on the surface of a truck, and the device can move up and down to improve the sensitivity of the information receiving module, so as to complete information reading more quickly.
The lifting device comprises a stepping motor 2 fixed on the surface of the engineering truck, a screw rod 3 connected with the stepping motor, a moving plate 4 arranged on the screw rod and capable of moving up and down along with the rotation of the screw rod, and a pair of guide pillars 5 arranged at two ends of the moving plate, wherein a moving nut 6 matched with the screw rod 3 is arranged on the moving plate 4, guide holes matched with the guide pillars are arranged at the left end and the right end of the moving plate, connecting blocks 7 are arranged at two ends of the guide pillars and connected to the surface of the engineering truck through the connecting blocks 7, and a signal reader-writer module is fixed on.
Specifically, the screw rod 3 and the stepping motor 2 are of an integrated structure, a mounting hole is formed in the middle of one side, close to the surface of the engineering truck, of the movable plate, the aperture of the mounting hole is larger than 5mm of the diameter of the screw rod 3, a movable nut 6 is mounted on the lower surface of the mounting hole, the movable nut 6 is in threaded fit with the screw rod 2, guide holes are formed in two ends, close to the surface of the engineering truck, of the movable plate 4, guide posts 5 penetrate through the mounting hole, the guide holes and the guide posts 5 play a role in guiding the movable plate to move up and down, the mounting part 8 is a vertical plate, one vertical edge is connected to the signal reader-writer module 20, the other edge is connected to the movable plate.
The above is only a preferred embodiment of the present invention, and the scope of the present invention is defined by the appended claims, and several modifications and amendments made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as the scope of the present invention.
Claims (8)
1. A road and bridge stress detection system comprises a stress sensor module, a signal reader-writer module and a signal relay gateway module;
the stress sensor module comprises an energy receiving antenna, an energy conversion module, an energy storage unit, a plurality of stress sensors, a micro control unit and an RF module; the stress sensor and the RF module are respectively connected with the micro control unit, the energy storage unit supplies power to the stress sensor, the RF module and the micro control unit, and the energy receiving antenna is connected with the energy storage unit through the energy conversion module;
the stress sensor module is in wireless communication with the signal reader module, the signal reader module comprises a first GPRS module and is connected with the cloud platform through a wireless network, the signal reader module receives stress detection data sent by the stress sensor module through wireless and sends the data to the cloud platform after processing, and the cloud platform displays, processes and stores the data after receiving the data;
the signal relay gateway comprises a CPU, a second GPRS module, a gateway RF module and a remote wireless charging base station, one end of the second GPRS module is connected with the cloud platform, the other end of the second GPRS module is connected with the CPU, one end of the gateway RF module is connected with the RF module of the stress sensor module, the other end of the gateway RF module is connected with the CPU, and the remote wireless charging base station emits electromagnetic waves with fixed frequency points to carry out remote wireless charging on an energy receiving antenna of the stress sensor module.
2. The system for detecting the stress of the road and bridge according to claim 1, wherein the energy storage unit is a super capacitor, the energy receiving antenna is a ceramic patch antenna, the energy conversion module is composed of a P2110B energy conversion chip and a peripheral circuit thereof, the energy receiving antenna and the energy conversion module are connected after impedance matching, and the energy conversion module is respectively connected with the super capacitor.
3. The system of claim 2, wherein the ceramic patch antenna comprises a plurality of pieces.
4. The system for detecting the stress of the road and bridge according to claim 1, wherein the micro control unit adopts a 32-bit low-power ARM processor STM32L053R8T6, and the RF module communication adopts CC3000 MODT.
5. The system for detecting stress of road and bridge according to claim 1, wherein said stress sensor is a concrete strain gauge and/or a steel bar strain gauge.
6. The system of claim 1, wherein the cloud platform comprises a cloud platform and a Web end, and the cloud platform and the Web end communicate via an HTTP protocol.
7. The system of claim 1, wherein the signal relay gateway further comprises a solar panel management module, and the solar panel management module is powered by a solar panel.
8. The system according to claim 1, further comprising a lifting device disposed on the surface of the engineering truck, wherein the lifting device comprises a stepping motor fixed on the surface of the engineering truck, a screw rod connected to the stepping motor, a moving plate disposed on the screw rod and capable of moving up and down along with the rotation of the screw rod, and a pair of guide posts disposed at two ends of the moving plate, the moving plate is provided with moving nuts engaged with the screw rod, the left and right ends of the moving plate are provided with guide holes matching with the guide posts, two ends of the guide posts are provided with connecting blocks connected to the surface of the engineering truck through the connecting blocks, and the signal reader module is fixed on the moving plate through an installation member.
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| CN202011188835.6A CN112525399A (en) | 2020-10-30 | 2020-10-30 | Road and bridge stress detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295203A (en) * | 2021-05-11 | 2021-08-24 | 内蒙古显鸿科技股份有限公司 | Passive wireless high-speed rail track board real-time online monitoring system device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204758012U (en) * | 2015-04-15 | 2015-11-11 | 无锡市博尚光电科技有限公司 | Utilize bridge structures health monitoring wireless device of environment electromagnetic wave power supply |
| CN105678352A (en) * | 2015-12-31 | 2016-06-15 | 电子科技大学 | Long distance high speed data transmission system based on ultrahigh frequency RFID |
| CN108507713A (en) * | 2018-04-02 | 2018-09-07 | 江苏中路工程检测有限公司 | A kind of stress detection device for road surface |
| WO2019159042A1 (en) * | 2018-02-16 | 2019-08-22 | Site S.P.A. Con Socio Unico | System and method for automated monitoring of suspended road infrastructures, such as flyovers, bridges and viaducts |
| CN110809201A (en) * | 2019-12-05 | 2020-02-18 | 中铁工程装备集团有限公司 | Construction engineering health monitoring management chip and system |
| CN210108562U (en) * | 2019-06-04 | 2020-02-21 | 福建船政交通职业学院 | Stress detection device for road construction |
| CN210680984U (en) * | 2019-10-22 | 2020-06-05 | 杭州精是智能科技有限公司 | Vehicle based on RFID control traveles |
-
2020
- 2020-10-30 CN CN202011188835.6A patent/CN112525399A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204758012U (en) * | 2015-04-15 | 2015-11-11 | 无锡市博尚光电科技有限公司 | Utilize bridge structures health monitoring wireless device of environment electromagnetic wave power supply |
| CN105678352A (en) * | 2015-12-31 | 2016-06-15 | 电子科技大学 | Long distance high speed data transmission system based on ultrahigh frequency RFID |
| WO2019159042A1 (en) * | 2018-02-16 | 2019-08-22 | Site S.P.A. Con Socio Unico | System and method for automated monitoring of suspended road infrastructures, such as flyovers, bridges and viaducts |
| CN108507713A (en) * | 2018-04-02 | 2018-09-07 | 江苏中路工程检测有限公司 | A kind of stress detection device for road surface |
| CN210108562U (en) * | 2019-06-04 | 2020-02-21 | 福建船政交通职业学院 | Stress detection device for road construction |
| CN210680984U (en) * | 2019-10-22 | 2020-06-05 | 杭州精是智能科技有限公司 | Vehicle based on RFID control traveles |
| CN110809201A (en) * | 2019-12-05 | 2020-02-18 | 中铁工程装备集团有限公司 | Construction engineering health monitoring management chip and system |
Non-Patent Citations (1)
| Title |
|---|
| 马海虹 等: "《空间无线能量传输技术》", 28 February 2019, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295203A (en) * | 2021-05-11 | 2021-08-24 | 内蒙古显鸿科技股份有限公司 | Passive wireless high-speed rail track board real-time online monitoring system device |
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Application publication date: 20210319 |