CN211425359U - Bridge deformation laser measuring device based on wireless sensor network - Google Patents
Bridge deformation laser measuring device based on wireless sensor network Download PDFInfo
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- CN211425359U CN211425359U CN202020022890.7U CN202020022890U CN211425359U CN 211425359 U CN211425359 U CN 211425359U CN 202020022890 U CN202020022890 U CN 202020022890U CN 211425359 U CN211425359 U CN 211425359U
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Abstract
The utility model relates to the technical field of bridge deformation monitoring, and discloses a laser measuring device for bridge deformation based on a wireless sensing network, which comprises an intelligent gateway, a sensor connecting rod, a sensor adjusting frame, a laser displacement sensor, a data line, a data acquisition module, a connecting angle iron, a solar power line, a solar panel mounting rack and a reflector panel, wherein the sensor connecting rod is fixed at the side of a bridge pier through an expansion bolt, the sensor adjusting frame is fixed at the front end of the sensor connecting rod, the laser displacement sensor is fixed at the top of the sensor adjusting frame, the reflector panel is adhered at the lower end of the bridge pier through an adhesive, the installation direction and the pointing direction of the laser displacement sensor are all horizontal to the driving direction at the upper end of the bridge plate, the data acquisition module is fixed at the side of the bridge pier through the connecting angle iron, the function of real-time remote monitoring bridge deflection deformation can be realized.
Description
Technical Field
The utility model relates to a bridge deformation monitoring technology field especially relates to a bridge warp laser surveying device based on wireless sensor network.
Background
At present, the main methods applied to monitoring the displacement or deformation of a bridge structure are a GPS method, a level method, a close-range photogrammetry method and the like. The GPS monitoring technology has the characteristics of high sampling rate (20 Hz), capability of performing static and dynamic monitoring and the like, has unique superiority in the aspect of large-scale structure monitoring, but has certain limitation, because satellite signals are shielded and the influence of multi-path base effect is caused, the monitoring precision and reliability are not high, and the elevation precision is far lower than that of the horizontal position; in the actual production, the level method has the disadvantages of large workload, complex process and certain limitation, and is difficult to meet the requirement of actual monitoring; the close-range photogrammetry method can simultaneously determine the spatial positions of multiple points at a certain moment, and the photographic data can be compared at any time, but the absolute accuracy of observation is not better than that of the traditional measurement method, and the accuracy of the close-range photogrammetry method mainly depends on the longitudinal distance and the focal length.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a bridge warp laser measuring device based on wireless sensor network through sensor acquisition, wireless transmission and the relevant equipment of cloud platform, can real-time supervision bridge structures's the deformation condition, reaches higher level in the aspect of practicality, accuracy nature and economic nature etc..
The utility model discloses a following technical scheme realizes:
the utility model comprises an intelligent gateway, a sensor connecting rod, a sensor adjusting bracket, a laser displacement sensor, a data line, a data acquisition module, a connecting angle iron, a solar power line, a solar panel mounting bracket and a reflector panel, the sensor connecting rod is fixed on the side surface of the pier through an expansion bolt, the sensor adjusting frame is fixed at the front end of the sensor connecting rod, the laser displacement sensor is fixed on the top of the sensor adjusting frame, the reflector is adhered to the lower end of the pier through an adhesive, the installation direction of the solar displacement sensor is horizontal to the traveling direction at the upper end of a bridge plate, the data acquisition module is fixed on the side face of a pier through a connecting angle iron, the solar panel is fixed on a solar panel mounting frame, the solar panel mounting frame is fixed at the upper end of the bridge plate, the solar panel is connected with the data acquisition module through a solar power line, and the laser displacement sensor is connected with the data acquisition module through a data line; the data acquisition module comprises a box body, a rechargeable battery pack, a solar cell panel charging module, an LoRa wireless module and an antenna, wherein the rechargeable battery pack, the solar cell panel charging module and the LoRa wireless module are fixed in the box body, the antenna is connected with the LoRa wireless module through a conducting wire, the antenna extends out of the outer side of the box body, the solar cell panel is connected with the solar cell panel charging module through a solar power line, the solar cell panel charging module is connected with the rechargeable battery pack through a conducting wire, the rechargeable battery pack supplies power for the laser displacement sensor and the LoRa wireless module, and the laser displacement sensor is connected with the LoRa wireless module through a conducting wire; the intelligent gateway sets up near the pier, and apart from loRa wireless module at 2KM within range, intelligent gateway uses 220v commercial power supply, loRa wireless module passes through wireless and intelligent gateway communication, intelligent gateway passes through 4G signal and cloud platform communication.
Furthermore, the reflector uses an aluminum alloy plate as a bottom plate, and a reflective film is pasted on the surface, wherein the thickness of the reflective film is 2-3 mm, and the length and the width of the reflective film are 30mm multiplied by 30 mm.
Furthermore, the laser displacement sensor and the box body are packaged by a waterproof and dustproof shell.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a bridge warp laser measuring device based on wireless sensor network, through laser displacement sensor transmission laser to the reflector panel reflect back and received by laser displacement sensor, can obtain laser displacement sensor and reflector panel distance in vertical side according to laser displacement sensor's installation inclination, can calculate the amount of deflection parameter that obtains the bridge plate according to laser displacement sensor and reflector panel distance change in vertical side to realize the monitoring that the bridge warp.
2. The utility model discloses a bridge warp laser measuring device based on wireless sensor network utilizes the data that laser displacement sensor measurement obtained to transmit data acquisition module through 485 data lines, and data acquisition module passes through loRa wireless module wireless transmission to intelligent gateway, and intelligent gateway passes through 4G signal transmission to the cloud platform, carries out the analysis through transferring data on the cloud platform, can realize the function of remote monitoring bridge plate amount of deflection.
Drawings
Fig. 1 is a schematic view of the installation structure of the present invention;
fig. 2 is the utility model discloses well data acquisition module and cloud platform's wireless communication schematic diagram.
In the figure: 1. a bridge pier; 2. a bridge plate; 3. a sensor connecting rod; 4. a sensor adjusting bracket; 5. a laser displacement sensor; 6. 485 data lines; 7. a data acquisition module; 8. connecting angle iron; 9. a solar power line; 10. a solar panel; 11. a solar panel mounting frame; 12. a reflector; 71. a box body; 72. a rechargeable battery pack; 73. a solar cell panel charging module; 74. a LoRa wireless module; 75. an antenna.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1 and fig. 2, the utility model discloses a bridge warp laser surveying device based on wireless sensor network, including intelligent gateway, sensor connecting rod 3, sensor adjusting bracket 4, laser displacement sensor 5, 485 data lines 6, data acquisition module 7, connection angle bar 8, solar power cord 9, solar panel 10, solar panel mounting bracket 11 and reflector panel 12. Sensor connecting rod 3 passes through expansion bolts to be fixed in 1 side of pier, and sensor alignment jig 4 is fixed in 3 front ends of sensor connecting rod, and reflector panel 12 passes through the adhesion agent adhesion at 1 lower extreme of pier, and its installation direction and laser displacement sensor 5's sensing all with the driving of 2 upper ends of bridge plate to the level, reflector panel 12 uses aluminum alloy plate as the bottom plate, surface-pasted reflective membrane, reflective membrane's thickness 2~3mm, length width is 30mm x 30 mm. Laser displacement sensor 5 is fixed at the top of sensor alignment jig 4, and laser displacement sensor 5 adopts waterproof dirt-proof shell encapsulation, and laser displacement sensor 5's sampling frequency range 1~30Hz, minimum resolution 0.1mm, data send with 485 bus mode, and sensor alignment jig 4 uses the alignment jig among the prior art, and sensor alignment jig 4 can realize adjusting laser displacement sensor 5 in the rotation of level to and the rotation work of vertical to.
Data acquisition module 7 is fixed in 1 side of pier through connecting angle bar 8, and Solar panel 10 fixes on Solar panel mounting bracket 11, and Solar panel mounting bracket 11 is fixed in 2 upper ends of bridge board, and Solar panel 10 passes through Solar Power line 9 to be connected with data acquisition module 7, and for its Power supply, Solar panel 10 uses the Global Solar Power FLEX 100W Solar panel of han can tablet, and its unit volume energy density is big, and the compliance is good, easy to assemble. The laser displacement sensor 5 is connected with the data acquisition module 7 through a 485 data line 6 and transmits data to the data acquisition module 7; the data acquisition module 7 comprises a box body 71, a rechargeable battery pack 72, a solar panel charging module 73, an LoRa wireless module 74 and an antenna 75, wherein the rechargeable battery pack 72, the solar panel charging module 73 and the LoRa wireless module 74 are all fixed in the box body 71, the antenna 75 is connected with the LoRa wireless module 74 through a lead, the LoRa wireless module 74 uses an LG206 wireless module to realize wireless communication with an intelligent gateway through a LoRa technology, the working frequency range of the LG206 wireless module is 398-525 Mhz, the working voltage is 5-36V, the baud rate is 1200-115200 bps, an active reporting mode is adopted, the antenna 75 extends out of the box body 71, the box body 71 is packaged by a waterproof and dustproof shell, the solar panel 10 is connected with the solar panel charging module 73 through a solar power line 9, the solar panel charging module 73 uses a 9V-28V solar charging step-down voltage regulator, the solar panel charging module 73 is connected with the rechargeable battery pack 72 through a lead, the rechargeable battery pack 72 uses an SONY12V8400mAH battery pack, the rechargeable battery pack can enable the data acquisition module 7 to work for more than three days depending on battery energy storage in the absence of illumination, the rechargeable battery pack 72 supplies power to the laser displacement sensor 5 and the LoRa wireless module 74, and the laser displacement sensor 5 is connected with the LoRa wireless module 74 through a lead; intelligent gateway sets up near pier 1, apart from loRa wireless module 74 at 2KM within range, intelligent gateway uses 220v commercial power supply, and loRa wireless module 74 is through wireless and intelligent gateway communication, and intelligent gateway passes through 4G signal and cloud platform communication, and intelligent gateway is the thing networking concentrator based on the loRa agreement, supports 4G, WAN and WIFI transmission mode to cloud service platform is connected to the MQTT agreement, and the upload data protocol format includes: intelligent gateway ID, data acquisition module ID, timestamp, online condition, data length, valid data, and the like.
The utility model discloses a bridge warp laser measuring device during operation based on wireless sensor network, send laser to reflector panel 12 through laser displacement sensor 5 and reflect back and received by laser displacement sensor 5, thereby can calculate the linear distance who obtains laser displacement sensor 5 to reflector panel 12, can obtain laser displacement sensor 5 and reflector panel 12 distance in vertical side according to laser displacement sensor 5's installation inclination, when the cart is through on bridge board 2, reflector panel 12 follows bridge board 2 and descends, make laser displacement sensor 5 and reflector panel 12 at the ascending distance change of vertical side, can calculate the amount of deflection parameter that obtains bridge board 2 according to the change value. Data that laser displacement sensor 5 measured and obtained are transmitted data acquisition module 7 through 485 data lines 6, and data acquisition module 7 is through loRa wireless module 74 wireless transmission to intelligent gateway, and intelligent gateway passes through 4G signal transmission to cloud platform, analyzes through transferring data on cloud platform, can realize the function of 2 amount of deflection of remote monitoring bridge plate.
To sum up, the utility model discloses utilize the good directionality of laser, realize contactless remote measurement. Along with the deformation of the bridge in different degrees, the center of a laser spot irradiated on a reflecting plate of a measured point changes, the bridge deflection can be obtained by only acquiring the distance between a laser emission point and the center position of the spot through a trigonometric function calculation method, and the method has the characteristics of high measurement precision, high sampling rate, low cost and the like, and is suitable for small and medium-sized bridges with small span.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (3)
1. The utility model provides a bridge warp laser measuring device based on wireless sensor network which characterized in that: comprises an intelligent gateway, a sensor connecting rod (3), a sensor adjusting frame (4), a laser displacement sensor (5), a 485 data line (6), a data acquisition module (7), a connecting angle iron (8), a solar power line (9), a solar panel (10), a solar panel mounting rack (11) and a reflector panel (12), wherein the sensor connecting rod (3) is fixed on the side surface of the pier (1) through an expansion bolt, the sensor adjusting frame (4) is fixed at the front end of the sensor connecting rod (3), the laser displacement sensor (5) is fixed at the top of the sensor adjusting frame (4), the reflector panel (12) is adhered to the lower end of the pier (1) through an adhesive, the mounting direction of the reflector panel is horizontal to the driving direction at the upper end of the bridge panel (2), the data acquisition module (7) is fixed on the side surface of the pier (1) through the connecting angle iron (8, the solar panel (10) is fixed on the solar panel mounting frame (11), the solar panel mounting frame (11) is fixed at the upper end of the bridge plate (2), the solar panel (10) is connected with the data acquisition module (7) through a solar power line (9), and the laser displacement sensor (5) is connected with the data acquisition module (7) through a 485 data line (6); the data acquisition module (7) comprises a box body (71), a rechargeable battery pack (72), a solar panel charging module (73), a LoRa wireless module (74) and an antenna (75), the rechargeable battery pack (72), the solar panel charging module (73) and the LoRa wireless module (74) are all fixed in the box body (71), the antenna (75) is connected with the LoRa wireless module (74) through a lead, the antenna (75) extends out of the box body (71), the solar panel (10) is connected with the solar panel charging module (73) through a solar power line (9), the solar panel charging module (73) is connected with the rechargeable battery pack (72) through a lead, the rechargeable battery pack (72) supplies power to the laser displacement sensor (5) and the LoRa wireless module (74), and the laser displacement sensor (5) is connected with the LoRa wireless module (74) through a lead; the intelligent gateway sets up near pier (1), and distance loRa wireless module (74) is in the 2KM within range, and intelligent gateway uses 220v commercial power supply, loRa wireless module (74) are through wireless and intelligent gateway communication, intelligent gateway passes through 4G signal and cloud platform communication.
2. The bridge deformation laser measuring device based on the wireless sensor network according to claim 1, characterized in that: the reflector (12) takes an aluminum alloy plate as a bottom plate, a reflective film is pasted on the surface, the thickness of the reflective film is 2-3 mm, and the length and the width of the reflective film are 30mm multiplied by 30 mm.
3. The bridge deformation laser measuring device based on the wireless sensor network according to claim 1 or 2, characterized in that: the laser displacement sensor (5) and the box body (71) are packaged by a waterproof and dustproof shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020022890.7U CN211425359U (en) | 2020-01-07 | 2020-01-07 | Bridge deformation laser measuring device based on wireless sensor network |
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| CN202020022890.7U CN211425359U (en) | 2020-01-07 | 2020-01-07 | Bridge deformation laser measuring device based on wireless sensor network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043982A (en) * | 2020-01-07 | 2020-04-21 | 浙江省交通运输科学研究院 | Bridge deformation laser measuring device based on wireless sensor network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043982A (en) * | 2020-01-07 | 2020-04-21 | 浙江省交通运输科学研究院 | Bridge deformation laser measuring device based on wireless sensor network |
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