CN104236688A - Piezoelectric vehicle dynamic weighing sensor - Google Patents
Piezoelectric vehicle dynamic weighing sensor Download PDFInfo
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- CN104236688A CN104236688A CN201310561444.8A CN201310561444A CN104236688A CN 104236688 A CN104236688 A CN 104236688A CN 201310561444 A CN201310561444 A CN 201310561444A CN 104236688 A CN104236688 A CN 104236688A
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- elastic body
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- weighing sensor
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- dynamic weighing
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Abstract
The invention discloses a piezoelectric vehicle dynamic weighing sensor. The sensor is composed of an elastic body, a conductive block unit, a screw unit, end cover plates, pouring sealant, a grinding block, a buffer strip, a cable and a cable guiding block. On the basis of the longitudinal piezoelectric effect principle, the sensors are installed along the way where vehicles run or installed on various toll station openings. When a vehicle passes by the sensor at a certain speed, the sensitive element of the sensor is pressed by tires, and electric charge output is generated; the sensor is compact in structure and can adapt to various classes of impact abrasion of a road surface, the protecting effect reaches IP68, the sensor can bear accumulated water on the road surface and is good in long-time stability, the consistency of all the segments of the sensor is good and can reach 3% to 5%, the sensor can become long or short and can adapt to road surfaces with various widths, and the sensor is fast in dynamic response and can be used for accurate weighing of various types of vehicles with the driving speed ranging from 0 km/h to 20 km/h.
Description
Technical field
The present invention relates to a kind of force snesor, particularly a kind of piezoelectric type dynamic weighing sensor for vehicle.
Technical background
Piezoelectric type dynamic weighing sensor for vehicle of the present invention adopts longitudinal piezoelectric effect principle, during work, sensor according to certain way mounting vehicle travel on the way or all kinds of charge exit, when driving vehicle crosses sensor with about 0km/h to 200km/h speed, tire pinch sensors sensitive element produces electric charge and exports.In prior art, I-shaped beam type measurement dynamic weighing sensor and strain-type bending plate sensor can be adopted to measure, patent ZL201220677802.2 describes a kind of I-shaped beam type dynamic weighing sensor for vehicle, mainly comprise elastic body, upper cushion block, lower cushion block, piezoelectric quartz group, insulcrete, set screws, butt-end packing plate, left/right flexible sheath, clay and cable composition, its advantage is rapid dynamic response speed, measuring accuracy is high, Structure and energy is comparatively simple, but due to such sensor construction design feature, there is the deficiency of following several respects: upper cushion block, lower cushion block is axially an overall square bar along elastic body, because cross section is less, the stressing conditions of cushion block more long easier torsion effect quartz group and damage the performance of sensor, clay is filling material, and fill in process of setting, often form tiny uneven bubble hole, the unevenness of clay material has damaged the mechanical property of clay, and along with the growth of service time, sensor long-time stability are affected, because sensor environment for use is severe, after end face is sealed in certain weight or surface gathered water in prior art, easily from the infiltration of butt-end packing plate seam crossing, damages sensor insulativity, cause sensor to be scrapped.And strain-type bending plate sensor is all comparatively harsh in installation, request for utilization, safeguard or replacement cost higher.Along with the development of smart city, intelligent transportation, it is imperative that high efficiency, low cost regulates the traffic intelligently.A kind of piezoelectric type dynamic vehicle weighing sensor involved by patent of the present invention, namely can overcome the above problems preferably, it travels or enters the weight of each charge exit vehicle for measuring in highway, for the overload of highway, overload remediation problem provide detection means effectively.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide one reliably and with long-term, environment for use requires low, the force snesor of the high precision that cost performance is high, wide fast measuring vehicle weight.
The present invention is achieved by following technical proposals.
The present invention relates to a kind of piezoelectric type dynamic weighing sensor for vehicle, comprise elastic body (1), conducting block unit (2), screw unit (3), end casing (4), casting glue (5), grinding block (6), buffer bar (7), cable (8), cable guide block (9), is characterized in that: single or multiple conducting block unit (2) implants the cavity run through in elastic body (1); Multiple screw unit (3) is screwed into elastic body and compresses conducting block unit (2); Cable (8) connects conducting block unit (2), extends laterally from elastic body (1) proximal end face position, fixing with cable guiding block (9) guiding; Casting glue (5) filled elastomer both ends of the surface, to screw on end casing (4) with the screw of band adhesive glue; Grinding block (6) adhesive glue bonds to elastic body (1) upper surface; Buffer bar (7) is pasted in elastic body (1) two sides.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described elastic body (1) is string configuration, and bar length can be arranged with the need; Point upper beam, central sill, underbeam in structure; Upper beam and underbeam are thin-slab construction, and outside surface has through-going recess; Upper beam is evenly distributed with and runs through threaded hole; Central sill is class cirque structure, and inside surface has rectangular recess; Exit, central sill two ends is filled with casting glue (5); Elastic body (1) two ends are stamped end casing (4) and are fixedly connected; End casing (4) outside surface is pasted similar shape and is covered layer.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described conducting block unit (2) is made up of upper and lower conducting block and piezoelectric quartz; Piezoelectric quartz conducting resinl is pasted onto between upper and lower conducting block evenly and at intervals; Upper and lower conducting block outside surface has insulation course; Lower conducting block bottom surface is pasted with insulating trip; The length of conducting block unit (2) and quantity are determined by elastic body (1) length, and match.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described screw unit (3) band adhesive glue is screwed into elastic body (1); The concave regions casting glue (5) that screw unit (3) is screwed into afterwards and elastic body (1) is formed is filled, with elastic body (1) upper surface flush; Screw unit (3) quantity and elastic body (1) length match.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described cable (8) is double-decker, and inner is quiet noise cable, and noise is little, is outward plastic round tube; It is inner that noise elimination acoustic-electric cable casting glue is fixed on elastic body (1), is connected, stretches out from elastic body (1) side with conducting block unit (2); Plastic round tube is fixed on cable guide block (9); Cable guide block (9) fills casting glue (5), is fixedly connected in elastic body (1) side.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described casting glue (5) intensity is high, insulation impedance 1000M Ω.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described grinding block (6) is the isometric wide thin sheet form of elastic body; Grinding block (6) intensity is high, and hardness is high, uniform in material, is pasted onto on elastic body (1) upper beam, and its upper surface is parallel with elastic body (1) upper and lower beam surface; Grinding block (6) can grind.
A kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described buffer bar (7) is pasted onto the two sides that elastic body (1) is formed with grinding block (6).
A kind of piezoelectric type dynamic weighing sensor for vehicle of the present invention at least has the following advantages: compact conformation of the present invention, the various impact wears on road surface can be adapted to, protection effect reaches IP68, can bear surface gathered water for a long time, long-time stability are good, and sensor each section of consistance can reach 3% ~ 5% well, sensor can be grown can be short, can adapt to the road surface of various width, dynamic response is fast, can adapt to travel speed and be about accurately weighing of all kinds of vehicle of 0km/h to 200km/h.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of piezoelectric type dynamic weighing sensor for vehicle of the present invention, comprise elastic body (1), conducting block unit (2), screw unit (3), end casing (4), casting glue (5), grinding block (6), buffer bar (7), cable (8), cable guide block (9), is characterized in that: single or multiple conducting block unit (2) implants the cavity run through in elastic body (1); Multiple screw unit (3) is screwed into elastic body and compresses conducting block unit (2); Cable (8) connects conducting block unit (2), extends laterally from elastic body (1) proximal end face position, fixing with cable guiding block (9) guiding; Casting glue (5) filled elastomer both ends of the surface, to screw on end casing (4) with the screw of band adhesive glue; Grinding block (6) adhesive glue bonds to elastic body (1) upper surface; Buffer bar (7) is pasted in elastic body (1) two sides.
A kind of piezoelectric type dynamic weighing sensor for vehicle of the present invention adopts longitudinal piezoelectric effect principle, during work, sensor according to certain way be arranged on vehicle travel on the way or all kinds of charge exit, when vehicle crosses sensor with certain speed, tire pinch sensors sensitive element produces electric charge and exports.Compact conformation of the present invention, all kinds of impact wears on road surface can be adapted to, protection effect reaches IP68, surface gathered water can be born for a long time, long-time stability are good, and sensor each section of consistance can reach 3% ~ 5% well, and sensor can be grown can be short, the road surface of various width can be adapted to, can be used for travel speed and be about accurately weighing of all kinds of vehicle of 0km/h to 200km/h.
Content described in this instructions embodiment is only the citing of the way of realization to inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that this example is stated, protection scope of the present invention also comprises those skilled in the art and conceives thinkable equivalent technology means according to the present invention.
Claims (9)
1. the present invention relates to a kind of piezoelectric type dynamic weighing sensor for vehicle, comprise elastic body (1), conducting block unit (2), screw unit (3), end casing (4), casting glue (5), grinding block (6), buffer bar (7), cable (8), cable guide block (9), is characterized in that: single or multiple conducting block unit (2) implants the cavity run through in elastic body (1); Multiple screw unit (3) is screwed into elastic body and compresses conducting block unit (2); Cable (8) connects conducting block unit (2), extends laterally from elastic body (1) proximal end face position, fixing with cable guiding block (9) guiding; Casting glue (5) filled elastomer both ends of the surface, to screw on end casing (4) with the screw of band adhesive glue; Grinding block (6) adhesive glue bonds to elastic body (1) upper surface; Buffer bar (7) is pasted in elastic body (1) two sides.
2. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described elastic body (1) is string configuration, and bar length can be arranged with the need; Point upper beam, central sill, underbeam in structure; Upper beam and underbeam are thin-slab construction, and outside surface has through-going recess; Upper beam is evenly distributed with and runs through threaded hole; Central sill is class cirque structure, and inside surface has rectangular recess; Exit, central sill two ends is filled with casting glue (5); Elastic body (1) two ends are stamped end casing (4) and are fixedly connected; End casing (4) outside surface is pasted similar shape and is covered layer.
3. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described conducting block unit (2) is made up of upper and lower conducting block and piezoelectric quartz; Piezoelectric quartz conducting resinl is pasted onto between upper and lower conducting block evenly and at intervals; Upper and lower conducting block outside surface has insulation course; Lower conducting block bottom surface is pasted with insulating trip; The length of conducting block unit (2) and quantity are determined by elastic body (1) length, and match.
4. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described screw unit (3) band adhesive glue is screwed into elastic body (1); The concave regions casting glue (5) that screw unit (3) is screwed into afterwards and elastic body (1) is formed is filled, with elastic body (1) upper surface flush; Screw unit (3) quantity and elastic body (1) length match.
5. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, it is characterized in that: described cable (8) is double-decker, inner is quiet noise cable, and noise is little, is outward plastic round tube; It is inner that noise elimination acoustic-electric cable casting glue is fixed on elastic body (1), is connected, stretches out from elastic body (1) side with conducting block unit (2); Plastic round tube is fixed on cable guide block (9); Cable guide block (9) fills casting glue (5), is fixedly connected in elastic body (1) side.
6. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described casting glue (5) intensity is high, insulation impedance >=1000M Ω.
7. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described grinding block (6) is the isometric wide thin sheet form of elastic body; Grinding block (6) intensity is high, and hardness is high, uniform in material, is pasted onto on elastic body (1) upper beam, and its upper surface is parallel with elastic body (1) upper and lower beam surface; Grinding block (6) can grind.
8. a kind of piezoelectric type dynamic weighing sensor for vehicle according to claim 1, is characterized in that: described buffer bar (7) is pasted onto the two sides that elastic body (1) is formed with grinding block (6).
9. the content described in this instructions embodiment is only the citing of the way of realization to inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that this example is stated, protection scope of the present invention also comprises those skilled in the art and conceives thinkable equivalent technology means according to the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310561444.8A CN104236688B (en) | 2013-11-09 | 2013-11-09 | A kind of piezoelectric type dynamic weighing sensor for vehicle |
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| CN201310561444.8A CN104236688B (en) | 2013-11-09 | 2013-11-09 | A kind of piezoelectric type dynamic weighing sensor for vehicle |
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| CN104236688B CN104236688B (en) | 2016-08-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333939A (en) * | 2015-11-27 | 2016-02-17 | 四川奇石缘科技股份有限公司 | Waterproof connector of I-shaped beam type vehicle dynamic weighing sensor |
| CN105698908A (en) * | 2016-03-23 | 2016-06-22 | 华南理工大学 | Piezoelectric dynamic vehicle weighing sensor |
| CN106846821A (en) * | 2017-02-24 | 2017-06-13 | 成都皆为科技有限公司 | A kind of full model recognition system |
| CN106989805A (en) * | 2017-04-12 | 2017-07-28 | 合肥盈川信息技术有限公司 | A kind of anti-pressure type ground level insertion overload detector of sensor line |
| CN110081960A (en) * | 2019-03-26 | 2019-08-02 | 四川奇石缘科技股份有限公司 | A kind of Prefabricated road vehicle dynamic weighing platform and its road construction installation method |
| CN112945362A (en) * | 2021-01-29 | 2021-06-11 | 长安大学 | Dynamic sensing device and measuring method for axle weight and vehicle speed |
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| CN202420638U (en) * | 2012-01-18 | 2012-09-05 | 郑州衡量电子科技有限公司 | Weight-in-motion array piezoelectric sensor of vehicle |
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Patent Citations (6)
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| EP0491655A1 (en) * | 1990-12-19 | 1992-06-24 | K.K. Holding Ag | System of force sensors, especially for dynamic determination of axial charge, speed, axial distance and total weight of vehicles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333939A (en) * | 2015-11-27 | 2016-02-17 | 四川奇石缘科技股份有限公司 | Waterproof connector of I-shaped beam type vehicle dynamic weighing sensor |
| CN105333939B (en) * | 2015-11-27 | 2018-04-17 | 四川奇石缘科技股份有限公司 | The waterproof connector of I-shaped beam type dynamic weighing sensor for vehicle |
| CN105698908A (en) * | 2016-03-23 | 2016-06-22 | 华南理工大学 | Piezoelectric dynamic vehicle weighing sensor |
| CN106846821A (en) * | 2017-02-24 | 2017-06-13 | 成都皆为科技有限公司 | A kind of full model recognition system |
| CN106846821B (en) * | 2017-02-24 | 2023-09-01 | 成都皆为科技有限公司 | Full-vehicle type recognition system |
| CN106989805A (en) * | 2017-04-12 | 2017-07-28 | 合肥盈川信息技术有限公司 | A kind of anti-pressure type ground level insertion overload detector of sensor line |
| CN110081960A (en) * | 2019-03-26 | 2019-08-02 | 四川奇石缘科技股份有限公司 | A kind of Prefabricated road vehicle dynamic weighing platform and its road construction installation method |
| CN112945362A (en) * | 2021-01-29 | 2021-06-11 | 长安大学 | Dynamic sensing device and measuring method for axle weight and vehicle speed |
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|---|---|
| CN104236688B (en) | 2016-08-17 |
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