CN202420639U - Piezoelectric sensor for dynamic weight measurement of vehicle - Google Patents
Piezoelectric sensor for dynamic weight measurement of vehicle Download PDFInfo
- Publication number
- CN202420639U CN202420639U CN2012200222516U CN201220022251U CN202420639U CN 202420639 U CN202420639 U CN 202420639U CN 2012200222516 U CN2012200222516 U CN 2012200222516U CN 201220022251 U CN201220022251 U CN 201220022251U CN 202420639 U CN202420639 U CN 202420639U
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- stressed
- check weighing
- piezoelectric sensor
- stress
- weight measurement
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Abstract
The utility model provides a piezoelectric sensor for dynamic weight measurement of a vehicle. The piezoelectric sensor comprises a weight measurement stressed profile and a quartz piezoelectric sensor, wherein the weight measurement stressed profile comprises a stressed deformation cavity body, a weight measurement stressed top plate and a weight measurement supporting bottom plate; the quartz piezoelectric sensor is arranged in the stressed deformation cavity body; the upper stressed surface and the lower stressed surface of the quartz piezoelectric sensor are respectively contacted with the upper deformation stressed inner cavity surface and the lower deformation stressed inner cavity surface of the stressed deformation cavity body; the weight measurement stressed top plate and the weight measurement supporting bottom plate are arranged in parallel; the stressed deformation cavity body is arranged between the weight measurement stressed top plate and the weight measurement supporting bottom plate; and the center of the upper outer cavity surface and the lower outer cavity surface of the stressed deformation cavity body are respectively arranged at the centers of the weight measurement stressed top plate and the weight measurement supporting bottom plate. The piezoelectric sensor provided by the utility model has the advantages of scientific design, implementation of dynamic weight measurement, high measured value accuracy, high weight measurement efficiency and easiness in production and installation.
Description
Technical field
The utility model relates to a kind of sensor, specifically, relates to a kind of vehicle dynamic check weighing piezoelectric sensor.
Background technology
The sensor kind of existing vehicle weighing system includes force transformation formula, bridge-type, bended plate type, or the like, the physical dimension of these sensors is very big, and weighing is directed against is the weight of whole axle; It is processed by the steel plate of tons of usually; Such design waste resource, and in actual installation exists that great in constructing amount, long construction period, installation are complicated, the long problem such as traffic that influences of cement solidification time; In the later stage use, also there is draining inconvenience, safeguards frequent problem; Moreover existing sensors is weighed, and most of kinetic measurements are more a lot of than static measurement low precision, brings very burden to vehicle pass-through, and efficiency of measurement is low, influences traffic.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, thereby a kind of design science is provided, can realizes dynamically weighting, the measured value precision is high, check weighing efficient is high, be easy to the vehicle dynamic check weighing piezoelectric sensor producing and install.
To achieve these goals; The technical scheme that the utility model adopted is: a kind of vehicle dynamic check weighing piezoelectric sensor; It includes stressed section bar of check weighing and quartzy piezoelectric sensor; The stressed section bar of said check weighing includes the stress and deformation cavity, and said quartzy piezoelectric sensor is arranged in the said stress and deformation cavity, and the stress surface up and down of said quartzy piezoelectric sensor contacts with the stressed inner cavity surface of deformation up and down of said stress and deformation cavity respectively.
Based on above-mentioned, the stressed section bar of said check weighing also includes stressed top board of check weighing and check weighing supporting baseplate, and said stress and deformation cavity is arranged between stressed top board of said check weighing and the said check weighing supporting baseplate.
Based on above-mentioned, stressed top board of said check weighing and said check weighing supporting baseplate laterally arrange, and the center of external cavity surface up and down of said stress and deformation cavity is separately positioned on the center of stressed top board of said check weighing and said check weighing supporting baseplate.
Based on above-mentioned, it also includes the road surface stress layer that is arranged on the stressed top board of said check weighing.
Based on above-mentioned, between stressed top board of said check weighing and said road surface stress layer, be provided with two groups of bars that test the speed.
Based on above-mentioned, the both sides of said stress and deformation cavity are respectively arranged with the buffering separation layer.
Based on above-mentioned, the both sides of said road surface stress layer and the stressed top board of said check weighing are respectively arranged with separation layer.
The relative prior art of the utility model has substantive distinguishing features and progress, and specifically, this vehicle dynamic check weighing piezoelectric sensor can be realized the check weighing that do not stop, and the kinetic measurement value is accurate, precision is high; In addition, its good weatherability, no temperature and time drift, horizontal unbalance loading high conformity, natural frequency is high, and weighing accuracy is steady in a long-term reliable; Moreover, being prone to install, the road surface injury is little, short construction period, long service life, consistent with pavement life, be applicable to existing freeway facility; This vehicle dynamic check weighing piezoelectric sensor reasonable in design, quartzy piezoelectric sensor stress equalization, high conformity, it has design science, can realize dynamically weighting, the measured value precision is high, check weighing efficient is high, be easy to the advantage of producing and installing.
Description of drawings
Fig. 1 is the cross section structure synoptic diagram of the utility model.
Among the figure: 11. stress deformation cavitys, the stressed top board of 12. check weighings, 13. check weighing supporting baseplates, 2. quartzy piezoelectric sensor, the bar that 3. tests the speed, 4. road surface stress layer, 5. buffering separation layer, 6. separation layer.
Embodiment
Through embodiment, the technical scheme of the utility model is done further detailed description below.
As shown in Figure 1, a kind of vehicle dynamic check weighing piezoelectric sensor, this sensor integral body is strip, and it includes the road surface stress layer 4 of strip, the stressed section bar of check weighing of strip and the quartzy piezoelectric sensor 2 of strip.
The stressed section bar of said check weighing includes stress and deformation cavity 11, the stressed top board 12 of check weighing and check weighing supporting baseplate 13; Wherein, The stressed top board 12 of said check weighing laterally arranges with said check weighing supporting baseplate 13; Said stress and deformation cavity 11 is arranged between stressed top board 12 of said check weighing and the said check weighing supporting baseplate 13, and the center of external cavity surface up and down of said stress and deformation cavity 11 is separately positioned on the center of stressed top board 12 of said check weighing and said check weighing supporting baseplate 13; Stressed top board 12 of said check weighing and said check weighing supporting baseplate 13 are parallel, and the upper and lower cavity face of said stress and deformation cavity 11 is parallel, so that stress and deformation cavity 11 vertical applied forces are balanced; The two side of said stress and deformation cavity 11 is outer arch shape, is beneficial to the 11 vertical applied force deformation of stress and deformation cavity; The two side deformation of said stress and deformation cavity 11 has certain component, but component is very little, and component is directly proportional with external force.
Said quartzy piezoelectric sensor 2 is arranged in the said stress and deformation cavity 11, and the stress surface up and down of said quartzy piezoelectric sensor 2 contacts with the stressed inner cavity surface of deformation up and down of said stress and deformation cavity 11 respectively; Said road surface stress layer 4 is arranged on the stressed top board 12 of said check weighing, and the stress surface up and down of said quartzy piezoelectric sensor 2 is positioned at the vertical applied force center of the stressed section bar of said check weighing.
Between stressed top board 12 of said check weighing and said road surface stress layer 4, be provided with two groups of bars 3 that test the speed, said bar 3 upper surfaces that test the speed are higher than the upper surface of the stressed top board 12 of said check weighing; Through two groups of bars 3 that test the speed, can calculate the speed of a motor vehicle of vehicle.
During installation, on direction, dig the groove that 75mm is wide, 70mm is dark, then, make said check weighing supporting baseplate 13 down, this vehicle dynamic check weighing piezoelectric sensor is positioned in the said groove, build again that embedding is fixing to get final product perpendicular to highway.
The both sides of said stress and deformation cavity 11 are respectively arranged with buffering separation layer 5, and said buffering separation layer 5 is made up of frothing foam; When stress and deformation cavity 11 outwards produced deformation, buffering separation layer 5 can play buffer action, in addition, building embedding fixedly the time, can play the buffer action between Embedding Material and the sensor.
The both sides of said road surface stress layer 4 and the stressed top board 12 of said check weighing are respectively arranged with separation layer 6, and said separation layer 6 is made up of foam; Building embedding fixedly the time, separation layer 6 can play the buffer action between Embedding Material and the sensor.
Vehicle then, passes to stressed top board 12 of check weighing and stress and deformation cavity 11 with gravity successively through road surface stress layer 4, and at this moment, stress and deformation cavity 11 vertical applied forces also micro-deformation take place; Stress and deformation cavity 11 vertical deformations, then the stressed inner cavity surface of deformation up and down of stress and deformation cavity 11 passes to the stress surface up and down of quartzy piezoelectric sensor 2 with vertical strength, and at this moment, quartzy piezoelectric sensor 2 stress and deformations produce electric charge; That is, utilize quartzy piezoelectric effect, when vehicle or weight are pressed on the quartz crystal, quartz crystal the two poles of the earth produce electric charge, because of the quantity of electric charge is directly proportional with the external force size, with circuit detect the electric charge that produces how much, can calculate vehicle or weight of heavy.
Piezoelectric effect is meant some crystal, does the time spent when receiving external force along certain orientation, and inner meeting produces polarization phenomena, produces the electric charge of equal and opposite in direction opposite in sign simultaneously on certain two surface at it; After external force is removed, return to not electriferous state again; When force direction changed, the polarity of electric charge was also along with change; The stressed quantity of electric charge that produces of crystal is directly proportional with the size of external force.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (9)
1. vehicle dynamic check weighing piezoelectric sensor; It is characterized in that: it includes stressed section bar of check weighing and quartzy piezoelectric sensor; The stressed section bar of said check weighing includes the stress and deformation cavity; Said quartzy piezoelectric sensor is arranged in the said stress and deformation cavity, and the stress surface up and down of said quartzy piezoelectric sensor contacts with the stressed inner cavity surface of deformation up and down of said stress and deformation cavity respectively.
2. vehicle dynamic check weighing piezoelectric sensor according to claim 1; It is characterized in that: the stressed section bar of said check weighing also includes stressed top board of check weighing and check weighing supporting baseplate, and said stress and deformation cavity is arranged between stressed top board of said check weighing and the said check weighing supporting baseplate.
3. vehicle dynamic check weighing piezoelectric sensor according to claim 2; It is characterized in that: stressed top board of said check weighing and said check weighing supporting baseplate laterally arrange, and the center of external cavity surface up and down of said stress and deformation cavity is separately positioned on the center of stressed top board of said check weighing and said check weighing supporting baseplate.
4. according to claim 2 or 3 described vehicle dynamic check weighing piezoelectric sensors, it is characterized in that: it also includes the road surface stress layer that is arranged on the stressed top board of said check weighing.
5. vehicle dynamic check weighing piezoelectric sensor according to claim 4 is characterized in that: between stressed top board of said check weighing and said road surface stress layer, be provided with two groups of bars that test the speed.
6. vehicle dynamic check weighing piezoelectric sensor according to claim 4, it is characterized in that: the both sides of said stress and deformation cavity are respectively arranged with the buffering separation layer.
7. vehicle dynamic check weighing piezoelectric sensor according to claim 5, it is characterized in that: the both sides of said stress and deformation cavity are respectively arranged with the buffering separation layer.
8. vehicle dynamic check weighing piezoelectric sensor according to claim 4 is characterized in that: the both sides of said road surface stress layer and the stressed top board of said check weighing are respectively arranged with separation layer.
9. according to claim 5 or 6 or 7 described vehicle dynamic check weighing piezoelectric sensors, it is characterized in that: the both sides of said road surface stress layer and the stressed top board of said check weighing are respectively arranged with separation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200222516U CN202420639U (en) | 2012-01-18 | 2012-01-18 | Piezoelectric sensor for dynamic weight measurement of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200222516U CN202420639U (en) | 2012-01-18 | 2012-01-18 | Piezoelectric sensor for dynamic weight measurement of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202420639U true CN202420639U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200222516U Expired - Fee Related CN202420639U (en) | 2012-01-18 | 2012-01-18 | Piezoelectric sensor for dynamic weight measurement of vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN202420639U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564548A (en) * | 2012-01-18 | 2012-07-11 | 郑州衡量电子科技有限公司 | Dynamic weighing piezoelectric sensor for vehicle |
| CN103925978A (en) * | 2014-05-05 | 2014-07-16 | 哈尔滨工业大学 | Portable dynamic vehicle overload detector and overload detection method based on piezoelectric materials |
| CN104101410A (en) * | 2014-07-18 | 2014-10-15 | 郑州衡量电子科技有限公司 | Dynamic weighing piezoelectric sensor for vehicles |
| CN104236688A (en) * | 2013-11-09 | 2014-12-24 | 绵阳市奇石缘科技有限公司 | Piezoelectric vehicle dynamic weighing sensor |
-
2012
- 2012-01-18 CN CN2012200222516U patent/CN202420639U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564548A (en) * | 2012-01-18 | 2012-07-11 | 郑州衡量电子科技有限公司 | Dynamic weighing piezoelectric sensor for vehicle |
| CN104236688A (en) * | 2013-11-09 | 2014-12-24 | 绵阳市奇石缘科技有限公司 | Piezoelectric vehicle dynamic weighing sensor |
| CN104236688B (en) * | 2013-11-09 | 2016-08-17 | 四川奇石缘科技股份有限公司 | A kind of piezoelectric type dynamic weighing sensor for vehicle |
| CN103925978A (en) * | 2014-05-05 | 2014-07-16 | 哈尔滨工业大学 | Portable dynamic vehicle overload detector and overload detection method based on piezoelectric materials |
| CN104101410A (en) * | 2014-07-18 | 2014-10-15 | 郑州衡量电子科技有限公司 | Dynamic weighing piezoelectric sensor for vehicles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150118 |
|
| EXPY | Termination of patent right or utility model |