CN211689799U - Frequency tester of vehicle-mounted pavement crack detection system based on inverse piezoelectric effect - Google Patents
Frequency tester of vehicle-mounted pavement crack detection system based on inverse piezoelectric effect Download PDFInfo
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- CN211689799U CN211689799U CN202020177380.7U CN202020177380U CN211689799U CN 211689799 U CN211689799 U CN 211689799U CN 202020177380 U CN202020177380 U CN 202020177380U CN 211689799 U CN211689799 U CN 211689799U
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Abstract
The utility model discloses an on-vehicle road surface crackle detecting system frequency inspection appearance based on inverse piezoelectric effect aims at solving on-vehicle road surface crackle detecting system frequency inspection problem based on inverse piezoelectric effect. The frequency tester for the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect comprises an upper base (1), a lower base (3), a fixed workbench (4), a beryllium bronze substrate (7) and a piezoelectric wafer (8), wherein nine components consisting of the upper base (1), the lower base (3), the beryllium bronze substrate (7) and the piezoelectric wafer (8) are respectively placed inside a 3 x 3 array rectangular hole of the fixed workbench (4) and are in transition fit connection with the fixed workbench (4), and the frequency tester for the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect, which is simple in structure and reliable in performance, is provided.
Description
Technical Field
The utility model relates to a calibrating installation of the check out test set in traffic field, more specifically say that it relates to an on-vehicle road surface crackle detecting system frequency detector based on inverse piezoelectric effect.
Background
The high-precision detection of the vehicle-mounted road surface crack system has important significance for determining the road surface damage condition and prolonging the service life of the road surface, and the low-precision vehicle-mounted road surface crack detection causes large data error, so that the crack condition is difficult to express the actual road surface condition, the road surface management is greatly influenced, and certain hidden danger is caused to the running of an automobile. When the crack acquisition frequency is used for acquiring the vehicle-mounted road crack image, due to the influence of different acquisition frequencies, a certain error exists between the pixel point in the actually acquired image and the pixel point of the ideal image, so that the measurement precision of the vehicle-mounted road crack of the automobile is reduced, and the estimation of the vehicle-mounted road crack of the automobile cannot be accurately realized. At present, no clear device for checking the frequency of the vehicle-mounted road surface crack detection system exists in image processing. Therefore, the design of the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect has important significance for the technical progress in the traffic detection field.
Disclosure of Invention
The utility model discloses to how to evaluate the problem that on-vehicle road surface crackle detecting system received collection frequency influence degree size, provide a simple structure, detect that the precision is high, easy and simple to handle, easily installation, commonality are strong, the cost is lower, the dependable performance can satisfy traffic detection trade to the on-vehicle road surface crackle detects the on-vehicle road surface crackle detecting system frequency detector based on inverse piezoelectric effect of requirement.
Referring to fig. 1 to 6, to solve the above technical problem, the present invention adopts the following technical solution. The utility model provides a vehicle-mounted road surface crack detecting system frequency inspection appearance based on inverse piezoelectric effect is including top base, lower base, fixed workbench, beryllium bronze base plate and piezoelectric wafer.
Nine upper bases are placed on a horizontal plane, nine beryllium bronze substrates are placed on the side faces of the upper bases respectively, nine groups of piezoelectric wafers are uniformly arranged along the length direction of the nine beryllium bronze substrates respectively, conductive AB glue is adopted to be connected and fixed with the beryllium bronze substrates in a gluing mode, nine lower bases are placed on the side faces of the nine beryllium bronze substrates respectively, the nine lower bases are fixedly connected with the nine upper bases through bolt threads, and nine components consisting of the upper bases, the lower bases, the beryllium bronze substrates and the piezoelectric wafers are placed inside 3 x 3 array rectangular holes of a fixed workbench and are in transition fit connection with the fixed workbench respectively.
In the technical scheme, the upper base is a U-shaped steel part, and a threaded hole is machined in the side face of the upper base.
In the technical scheme, the lower base is a U-shaped steel part, and a countersunk through hole is machined in the side face of the lower base.
In the technical scheme, the fixed workbench is a rectangular part with 3 x 3 array rectangular holes and is placed on the horizontal ground.
According to the technical scheme, the beryllium bronze substrate is a rectangular thin plate part made of beryllium bronze, and through holes are formed in two ends of the beryllium bronze substrate.
In the technical scheme, the piezoelectric wafer is a rectangular part made of piezoelectric ceramic materials which can generate controllable deformation under the action of current excitation.
The utility model has the advantages that:
(1) the utility model discloses a thereby piezoelectric wafer produces under the excitation of different frequency currents and warp as the power supply and drives the vibration form that the beryllium bronze base plate produced the difference, and horizontal 3, vertical 3 piezoelectric wafer pass through upper and lower base and fix on the workstation to realize simulating vehicle-mounted road surface crackle comparatively accurately in horizontal, vertical two directions respectively, avoided adopting complicated calculation volume, the cost is lower.
(2) The utility model discloses a set of piezoelectric wafer arranges in proper order along beryllium bronze base plate direction, and a set of piezoelectric wafer can also vibrate under different frequencies with the same frequency vibration, also can utilize the exciting current of different forms, different voltage amplitude respectively to encourage in addition to produce comparatively complicated compound deformation, more be close true road surface crackle to the simulation of road surface crackle.
(3) The main parts of the utility model are processed by standard section steel, firstly, the yield of the standard section steel is large, the mechanical processing procedures are few, and the production cost is low; secondly, as an important accessory of the measuring instrument, the adopted standard profile steel has certain strength, can not deform in long-term use, ensures the measuring precision and can meet the requirement of national standard on the measuring precision.
Drawings
FIG. 1 is an isometric view of a vehicle-mounted pavement crack detection system frequency tester based on the inverse piezoelectric effect;
fig. 2 is an isometric view of an upper base 1, a lower base 3, a beryllium bronze substrate 7 and the like in a frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect;
fig. 3 is an axonometric view of the upper base 1, the lower base 3, and the like in the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect;
fig. 4 is an isometric view of a beryllium bronze substrate 7 and a piezoelectric wafer 8 in a frequency tester of the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect;
fig. 5 is an axonometric view of the upper base 1 in the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect;
fig. 6 is an axonometric view of the lower base 3 in the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect;
in the figure: 1. the piezoelectric ceramic comprises an upper base, 3 parts of a lower base, 4 parts of a fixed workbench, 7 parts of a beryllium bronze substrate and 8 parts of a piezoelectric wafer.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 to 6, the frequency tester of the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect includes an upper base 1, a lower base 3, a fixed worktable 4, a beryllium bronze substrate 7 and a piezoelectric wafer 8.
The fixed workbench 4 is a rectangular part with 3 x 3 array rectangular holes, the workbench 4 is placed on a horizontal ground, the upper base 1 is a steel U-shaped part, the side surface of the upper base 1 is provided with a threaded hole, the lower base 3 is a steel U-shaped part, the side surface of the lower base 3 is provided with a countersunk through hole, the beryllium bronze substrate 7 is a rectangular thin plate part made of beryllium bronze, through holes are processed at two ends of the beryllium bronze substrate 7, the piezoelectric wafers 8 are rectangular parts made of piezoelectric ceramic materials which can generate controllable deformation under the action of current excitation, the nine upper bases 1 are placed on a horizontal plane, the nine beryllium bronze substrates 7 are respectively placed on the side surface of the upper base 1, the nine groups of piezoelectric wafers 8 are respectively and uniformly arranged along the length direction of the nine beryllium bronze substrates 7 and are fixedly connected with the beryllium bronze substrates 7 by adopting conductive AB glue, the nine lower bases 3 are respectively placed on the side surfaces of the nine beryllium bronze substrates 7, nine lower bases 3 are fixedly connected with nine upper bases 1 through bolt threads, and nine components composed of the upper bases 1, the lower bases 3, the beryllium bronze substrates 7 and the piezoelectric wafers 8 are respectively placed inside 3X 3 array rectangular holes of the fixed workbench 4 and are in transition fit connection with the fixed workbench 4.
The use method of the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect comprises the following steps: the frequency tester of the vehicle-mounted pavement crack detection system based on the inverse piezoelectric effect is placed on a horizontal ground, the piezoelectric wafers are electrified to drive the beryllium bronze substrate to vibrate, so that the beryllium bronze substrate is driven to deform in different forms, and due to the combined action of the piezoelectric wafers in the length direction of the beryllium bronze substrate, different piezoelectric wafers can be controlled respectively, so that pavement crack simulation with higher precision can be realized by one beryllium bronze substrate. And 3 x 3 vehicle-mounted pavement crack detection systems based on inverse piezoelectric effect are respectively adopted in the transverse direction and the longitudinal direction on the workbench, so that the simulation of pavement cracks in a plane can be realized, and further quantitative experimental data of the influence of frequency on a measurement model of the vehicle-mounted pavement crack detection system are obtained.
Claims (6)
1. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect is characterized by comprising an upper base (1), a lower base (3), a fixed workbench (4), a beryllium bronze substrate (7) and a piezoelectric wafer (8);
nine upper base (1) are placed on a horizontal plane, nine beryllium bronze substrates (7) are respectively placed on the side face of the upper base (1), nine groups of piezoelectric wafers (8) are respectively and uniformly arranged along the length direction of the nine beryllium bronze substrates (7), the nine upper base (7) and the nine beryllium bronze substrates are connected and fixed in a bonding mode through conductive AB glue, nine lower base (3) are respectively placed on the side face of the nine beryllium bronze substrates (7), the nine lower base (3) and the nine upper base (1) are fixedly connected through bolt threads, and nine components formed by the upper base (1), the lower base (3), the beryllium bronze substrates (7) and the piezoelectric wafers (8) are respectively placed inside a 3 x 3 array rectangular hole of the fixed workbench (4) and are connected with the fixed workbench (4) in a transition fit mode.
2. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect as claimed in claim 1, wherein the upper base (1) is a steel U-shaped part, and a threaded hole is processed in the side surface of the upper base (1).
3. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect as claimed in claim 1, wherein the lower base (3) is a steel U-shaped part, and a countersunk through hole is processed in the side surface of the lower base (3).
4. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect as claimed in claim 1, wherein the fixed worktable (4) is a rectangular part with a 3 x 3 array of rectangular holes, and the worktable 4 is placed on a horizontal ground.
5. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect as claimed in claim 1, wherein the beryllium bronze substrate (7) is a rectangular thin plate part made of beryllium bronze, and through holes are processed at two ends of the beryllium bronze substrate (7).
6. The frequency tester for the vehicle-mounted road surface crack detection system based on the inverse piezoelectric effect as claimed in claim 1, wherein the piezoelectric wafer (8) is a rectangular part made of piezoelectric ceramic material which generates controllable deformation under the action of current excitation.
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| CN202020177380.7U CN211689799U (en) | 2020-01-21 | 2020-01-21 | Frequency tester of vehicle-mounted pavement crack detection system based on inverse piezoelectric effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111139718A (en) * | 2020-01-21 | 2020-05-12 | 吉林大学 | Frequency tester of vehicle-mounted pavement crack detection system based on inverse piezoelectric effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139718A (en) * | 2020-01-21 | 2020-05-12 | 吉林大学 | Frequency tester of vehicle-mounted pavement crack detection system based on inverse piezoelectric effect |
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