CN210242760U - Sensing structure for road strain measurement - Google Patents
Sensing structure for road strain measurement Download PDFInfo
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- CN210242760U CN210242760U CN201921378122.9U CN201921378122U CN210242760U CN 210242760 U CN210242760 U CN 210242760U CN 201921378122 U CN201921378122 U CN 201921378122U CN 210242760 U CN210242760 U CN 210242760U
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- base plate
- road
- sensing structure
- foil gage
- strain measurement
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Abstract
The utility model discloses a sensing structure for road strain measurement, include foil gage, geotechnological cloth, base plate and be used for connecting external measuring equipment's lead wire, the base plate arrange in on the geotechnological cloth, the foil gage install in base plate upper end, base plate are provided with the lead wire circuit, lead wire circuit one end is connected with the foil gage, the other end and pin connection, the utility model discloses an install the foil gage on the base plate after the upper end rearrangement on geotechnological cloth for foil gage, base plate, geotechnological cloth combine together, have reduced the sensor cost by a wide margin, and geotechnological cloth can protect the foil gage simultaneously, has solved the easy destroyed problem of traditional sensor at the road inlayer, has reduced the construction degree of difficulty moreover.
Description
Technical Field
The utility model relates to a road strain measurement technical field, especially a sensing structure for road strain measurement.
Background
At present, in the road strain measurement technology, a traditional sensor structure is usually adopted to be arranged in an inner layer of a road for strain measurement. However, the structure of the traditional sensor structure is precise, the manufacturing cost is high, and the traditional sensor structure does not have a protection layer adaptive to the road, and the traditional sensor structure is easily damaged when being placed on the inner layer of the road, so that the accuracy of the measured data is affected.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiencies of the prior art, the utility model provides a sensing structure for road strain measurement.
The utility model discloses the technical scheme who adopts is mainly: the utility model provides a sensing structure for road strain measurement, includes foil gage, geotechnological cloth, base plate and is used for connecting the lead wire of outside measuring equipment, the base plate arrange in on the geotechnological cloth, the foil gage install in the base plate upper end, the base plate is provided with lead wire circuit, lead wire circuit one end is connected with the foil gage, the other end and pin connection.
In some embodiments, the substrate is bonded to the geotextile by a bonding material.
In some embodiments, the leads are woven integrally with the geotextile.
In some embodiments, the strain gauge is attached to the substrate through the sensitive gate portion thereof.
In some embodiments, the pads of the strain gage are soldered to the pads of the substrate.
In some embodiments, the exterior of the strain gage is provided with a protective layer.
In some embodiments, the protective layer also covers a portion of the substrate around the strain gage.
In some embodiments, the protective layer is a high temperature adhesive tape.
The utility model has the advantages that:
the utility model discloses a sensing structure for road strain measurement through installing the foil gage on base plate upper end after the laying in geotechnological cloth for foil gage, base plate, geotechnological cloth combine together, have reduced the sensor cost by a wide margin, and geotechnological cloth can protect the foil gage simultaneously, has solved traditional sensor at the easy destroyed problem of road inlayer, has reduced the construction degree of difficulty moreover.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a partially enlarged schematic view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, the sensing structure for road strain measurement of the present invention comprises a strain gauge 4, a geotextile 2, a base plate 1 and a lead 3 for connecting an external measuring device 5, wherein the base plate 1 is arranged on the geotextile 2 and connected with the geotextile 2, the geotextile 2 is a water permeable geosynthetic material formed by needling or weaving synthetic fibers, it can be for spinning geotechnological cloth or non-woven filament geotechnological cloth, geotechnological cloth 2 also can be provided with the multilayer and is convenient for place base plate 1 and carry out better protection between multilayer geotechnological cloth 2, foil gage 4 installs in base plate 1 upper end, base plate 1 is provided with lead wire circuit 11, lead wire circuit 11 can be placed in base plate 1 in, lead wire circuit 11 one end is connected with foil gage 4, the other end is connected with lead wire 3, lead wire 3 is connected with outside measuring equipment 5 after drawing forth from road one side, the signal of foil gage 4 measurement is transmitted for outside measuring equipment 5 through lead wire 3. The utility model discloses an install foil gage 4 after 1 upper end of base plate and arrange on geotechnological cloth 2 again for foil gage 4, base plate 1, geotechnological cloth 2 combines together, the sensor cost has been reduced by a wide margin, geotechnological cloth 2 can protect foil gage 4 simultaneously, the easy destroyed problem of traditional sensor at the road inlayer has been solved, and need use a plurality of sensing structures simultaneously usually among the practical application, consequently combine a plurality of foil gages 4 and base plate 1 with geotechnological cloth 2, can the greatly reduced construction degree of difficulty.
In the technical scheme, the substrate 1 can be bonded on the geotextile 2 through the bonding material which can be glue or other materials, so that the substrate 1 can be firmly fixed on the geotextile 2, and the operation is simple.
Preferably, lead wire 3 and geotechnological cloth 2 are woven as an organic wholely to make lead wire 3 can obtain the better protection of geotechnological cloth 2, avoid lead wire 3 to damage easily and influence data transmission, weave lead wire 3 and geotechnological cloth 2 as an organic wholely simultaneously and make lead wire 3 more hidden.
The utility model discloses in, foil gage 4 pastes on base plate 1 through its sensitive bars portion for its measured data is more accurate, and foil gage 4's pad and the pad welding of base plate make connection between the two more firm.
The utility model discloses in, foil gage 4's outside can also be provided with the protective layer, can further protect foil gage 4 through being provided with the protective layer. Of course, the protective layer may also cover a portion of the substrate 1 around the strain gauge 4, so that the strain gauge 4 and its periphery can be better protected, thereby further improving the damage resistance of the strain gauge 4.
The utility model can be used for the strain measurement in the road (such as asphalt road) by matching with a high-precision strain acquisition and analysis instrument, can obtain the real strain distribution under the road, and provides valuable scientific research data for the research of road surface structures and materials; in addition, the utility model can be used as a sensor to detect the information of the passing of the vehicles on the road surface, and count the traffic flow and the like; when the laying density of the strain gauge 4 is dense, the vehicle track can be obtained according to the vehicle passing information detected by each sensing point.
The following are specific application embodiments of the present invention:
the first embodiment is as follows: referring to fig. 1, lay a plurality ofly inside the new asphalt road of building the utility model discloses a sensing structure for monitoring pavement material's meeting an emergency:
(1) measuring point positions are designed and planned according to requirements, for example, in the embodiment, a plurality of positions of the cross section of a road need to be measured, and 10-20 sensing structures are arranged uniformly along the cross section;
(2) selecting a suitable type of strain gauge 4 according to requirements, for example, selecting a BA120-5AA strain gauge as a sensor in the present embodiment;
(3) manufacturing the sensing structure of the utility model according to the planned measuring point positions, pasting and forming the strain gauge 4 and the substrate 1, connecting the substrate 1 with the lead 3, weaving and forming the lead 3 and the geotextile 2, and pasting the substrate 1 and the geotextile 2 together, as shown in fig. 1;
(4) testing by using matched signal acquisition equipment to ensure that the sensing structure of each measuring point works normally;
(5) in the embodiment, the strain between the asphalt layer and the base layer is required to be measured, so that the whole sensing structure is laid on the base layer before the asphalt layer is laid, and the other end of the lead is led out of the road surface;
(6) constructing a road, namely paving asphalt on the sensing structure;
(7) connecting the lead wire to a signal acquisition device for signal acquisition, wherein the signal acquisition device can be a self-research device and can also be a common strain acquisition analyzer for signal acquisition;
(8) and processing and analyzing the signals to obtain the road strain condition.
Example two:
newly-built bituminous paving requires to lay sensing measurement station under the road, and the signal is crossed to the response car for monitor traffic flow:
(1) designing and planning sensing points according to requirements, and accurately monitoring vehicle passing signals, so that a part of redundant design is needed, three sensing belts are continuously laid in the embodiment, 10 measuring points are uniformly distributed on each lane of each sensing belt, and each measuring point is provided with one sensing structure of the utility model;
(2) selecting the type of the strain gauge 4 according to the requirement, and selecting a BA120-5AA strain gauge in the embodiment;
(3) manufacturing the sensing structure of the utility model according to the planned measuring point position;
(4) testing by using matched signal acquisition equipment to ensure that the sensing points work normally;
(5) in road construction, the sensing structure is laid between two asphalt layers in the embodiment;
(6) connecting the lead 3 to self-developed high-speed signal acquisition equipment for dynamic signal acquisition and real-time signal processing, and sending a vehicle-passing signal analyzed in real time to a background by the equipment through a network;
(7) and counting, counting and analyzing the signals to obtain the data of passing the vehicle on the road.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and the technical solutions for achieving the objects of the present invention by the substantially same means all belong to the protection scope of the present invention.
Claims (8)
1. A sensing structure for road strain measurement, characterized by: including foil gage, geotechnique's cloth, base plate and the lead wire that is used for connecting outside measuring equipment, the base plate arrange in on the geotechnique's cloth, the foil gage install in the base plate upper end, the base plate is provided with the lead wire circuit, lead wire circuit one end is connected with the foil gage, the other end and pin connection.
2. A sensing structure for road strain measurement according to claim 1, characterized in that: the base plate is bonded on the geotextile through a bonding material.
3. A sensing structure for road strain measurement according to claim 1, characterized in that: the lead wires and the geotextile are woven into a whole.
4. A sensing structure for road strain measurement according to claim 1, characterized in that: the strain gauge is pasted on the substrate through the sensitive grid part.
5. A sensing structure for road strain measurement according to claim 4, wherein: and the bonding pad of the strain gauge is welded with the bonding pad of the substrate.
6. A sensing structure for road strain measurement according to any of claims 1 to 5, wherein: and a protective layer is arranged outside the strain gauge.
7. A sensing structure for road strain measurement according to claim 6, wherein: the protective layer also covers a portion of the substrate around the strain gage.
8. A sensing structure for road strain measurement according to claim 7, wherein: the protective layer is a high-temperature adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378122.9U CN210242760U (en) | 2019-08-21 | 2019-08-21 | Sensing structure for road strain measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378122.9U CN210242760U (en) | 2019-08-21 | 2019-08-21 | Sensing structure for road strain measurement |
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| Publication Number | Publication Date |
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| CN210242760U true CN210242760U (en) | 2020-04-03 |
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| CN201921378122.9U Active CN210242760U (en) | 2019-08-21 | 2019-08-21 | Sensing structure for road strain measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375706A (en) * | 2019-08-21 | 2019-10-25 | 深圳市朋辉科技术有限公司 | A kind of sensing arrangement for road strain measurement |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375706A (en) * | 2019-08-21 | 2019-10-25 | 深圳市朋辉科技术有限公司 | A kind of sensing arrangement for road strain measurement |
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