CN104101410A - Dynamic weighing piezoelectric sensor for vehicles - Google Patents
Dynamic weighing piezoelectric sensor for vehicles Download PDFInfo
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- CN104101410A CN104101410A CN201410341077.5A CN201410341077A CN104101410A CN 104101410 A CN104101410 A CN 104101410A CN 201410341077 A CN201410341077 A CN 201410341077A CN 104101410 A CN104101410 A CN 104101410A
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Abstract
The invention provides a dynamic weighing piezoelectric sensor for vehicles. The dynamic weighing piezoelectric sensor comprises a weighing stress sectional material and a quartz piezoelectric sensor. The weighing stress sectional material comprises a stress deformation cavity and further comprises two groups of deformation conduction blocks. A first group of deformation conduction blocks, the quartz piezoelectric sensor and the second group of deformation conduction blocks are arranged in the stress deformation cavity and are sequentially stacked from top to bottom, the upper stressed surfaces of the first group of deformation conduction blocks and the lower stressed surfaces of the second group of deformation conduction blocks are respectively in contact with the upper stressed inner cavity surface and the lower stressed inner cavity surface of the stress deformation cavity, and two sides of the deformation conduction blocks are provided with buffering grooves respectively. The dynamic weighing piezoelectric sensor for the vehicles has the advantages of being scientific in design, long in service life and convenient to install and fix and having accuracy in weighing.
Description
Technical field
The present invention relates to a kind of sensor, specifically, relate to a kind of vehicle dynamic weighing piezoelectric sensor.
Background technology
The weighing results of existing vehicle piezoelectric sensor relies on the pressure bearing on quartz wafer to obtain, and is conventionally subject to the stressed cavity of horizontal shearing force and deforms and cause vertical force component to concentrate on quartz wafer, to cause weighing result poor accuracy while weighing.Quartz wafer is frangible, in use easily because unbalance stress damages.The pressure how to make to act on quartz wafer under the prerequisite of accurately weighing is uniformly distributed, and be to need the urgent problem solving the serviceable life of improving piezoelectric sensor.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, thereby provide a kind of design science, long service life, weighing accurately and be convenient to install and fixing vehicle dynamic weighing piezoelectric sensor.
To achieve these goals, the technical solution adopted in the present invention is: a kind of vehicle dynamic weighing piezoelectric sensor, include weigh stressed section bar and quartz piezoelectric sensor, the described stressed section bar of weighing includes stress and deformation cavity, it is characterized in that: it also comprises two groups of deformation conductive block, deformation conductive block described in first group, described in described quartz piezoelectric sensor and second group, deformation conductive block is all arranged in described stress and deformation cavity and is sequentially superimposed from top to bottom, described in first group, the lower stress face of the upper stress surface of deformation conductive block and deformation conductive block described in second group contacts with the bearing up-down force inner cavity surface of described stress and deformation cavity respectively, described deformation conductive block both sides offer respectively buffer groove.
Based on above-mentioned, the buffer groove of described deformation conductive block both sides is symmetrical arranged one by one along the vertical center of described deformation conductive block, and the vertical center of deformation conductive block and described stress and deformation cavity point-blank described in deformation conductive block described in first group, described quartz piezoelectric sensor, second group.
Based on above-mentioned, between the buffer groove of same described deformation conductive block both sides, nearest distance is not less than the width of described quartz piezoelectric sensor, and described in two groups, the length of deformation conductive block is not less than the length of described quartz piezoelectric sensor.
Based on above-mentioned, described stress and deformation cavity is the cylindric cavity being made up of bearing up-down force chamber wall and stress and deformation chamber, left and right wall, wherein, the inwall of upper and lower two described stressed chamber walls forms two stressed boss, and the outside surface of two described stressed boss is that bearing up-down force inner cavity surface is parallel to each other.
Based on above-mentioned, the wall thickness uniformity of upper and lower two described stressed chamber walls, the wall thickness uniformity of two the described stress and deformation chamber walls in left and right.
Based on above-mentioned, it also comprises the mounting framework being arranged in described stress and deformation cavity, and described mounting framework comprises two groups of risers and is arranged on the transverse slat between riser described in two groups, offers N quartz wafer protection hole on described transverse slat; Described quartz piezoelectric sensor comprise top electrode, bottom electrode and be arranged on described top electrode and described bottom electrode between N bauerite wafer; Described transverse slat is fastened between described top electrode and described bottom electrode; and equi-spaced apart is provided with N quartz wafer protection hole; described quartz wafer is arranged in described quartz wafer protection hole; described transverse slat is protruded respectively in its upper and lower end face; described in two groups, deformation conductive block is arranged in described mounting framework; and the upper and lower end face that described in first group, described in the upper stress surface of deformation conductive block and second group, the lower stress face of deformation conductive block protrudes respectively described mounting framework, N is natural number.
Based on above-mentioned, the outside of two groups of risers of described mounting framework is respectively arranged with support body registration arm, and the support body registration arm outer end of described mounting framework both sides is left and right stress and deformation internal chamber wall and the noncontact setting of corresponding described stress and deformation cavity respectively.
Based on above-mentioned, the described stressed section bar of weighing also comprises weigh stressed top board and the support baseboard of weighing that be arranged in parallel, and the road surface stress layer of weighing described in being arranged on stressed top board, described in described stressed cavity is arranged on, weigh stressed top board and described in weigh between support baseboard, the center of described stress and deformation cavity, described in weigh stressed top board and described in weigh the center of support baseboard on a vertical curve.
Based on above-mentioned, described stress and deformation cavity both sides are respectively arranged with buffer compartment absciss layer, described road surface stress layer and described in the weigh both sides of stressed top board be respectively arranged with separation layer.
The relative prior art of the present invention has outstanding substantive distinguishing features and progressive significantly, specifically, the stressed conductive block of this vehicle dynamic weighing piezoelectric sensor is provided with buffer groove can make the power that acts on described quartz piezoelectric sensor bearing up-down force face be evenly distributed, prevent that in described quartz piezoelectric sensor, quartz wafer damages, extend its serviceable life; Furtherly, the employing of stress and deformation cavity of the present invention relative chamber wall wall thickness uniformity columnar structured between two, its side direction can be born larger shearing force, and can make vertical force focus on described deformation conductive block, has improved the accuracy weighing; A step is said again, and the present invention is provided with mounting framework, is convenient to the installation of described quartz piezoelectric sensor and described deformation conductive block, fixing and location, and it has advantages of design science, long service life, weighing accurately and is convenient to install.
Brief description of the drawings
Fig. 1 is cross section structure schematic diagram of the present invention.
In figure: 1. stress and deformation cavity, 2. deformation conductive block, 21. buffer grooves, 3. electrode, 4. quartz wafer group, 5. mounting framework, the stressed top board of 6. weighing, the support baseboard of 7. weighing, 8. road surface stress layer, 91. buffer compartment absciss layers, 92. separation layers.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
As shown in Figure 1, a kind of vehicle dynamic weighing piezoelectric sensor, includes weigh stressed section bar and quartz piezoelectric sensor, and described quartz piezoelectric sensor comprises electrode 3 and quartz wafer group 4; The described stressed section bar of weighing includes stress and deformation cavity 1, it also comprises two groups of deformation conductive block 2, described in deformation conductive block 2 described in first group, described quartz piezoelectric sensor and second group, deformation conductive block 2 is all arranged in described stress and deformation cavity 1 and is sequentially superimposed from top to bottom, described in first group, the lower stress face of the upper stress surface of deformation conductive block 2 and deformation conductive block 2 described in second group contacts with the bearing up-down force inner cavity surface of described stress and deformation cavity 1 respectively, and described deformation conductive block 2 both sides offer respectively buffer groove 21.In the time that vertical force pockety acts on described deformation conductive block 2, deformation occurs at described buffer groove 21 places still evenly covers on described quartz piezoelectric sensor described deformation conductive block 2, the acting force of described quartz piezoelectric sensor bearing up-down force face is uniformly distributed, prevent the described quartz wafer group 4 of the uneven damage of distribution of forces, extend the serviceable life of this vehicle dynamic weighing piezoelectric sensor.
For making the vertical force component acting on the stressed cavity 1 of described deformation all concentrate on described deformation conductive block 2, and make the vertical force stepless action that acts on described conduction force block 2 in described quartz piezoelectric sensor, the buffer groove of described deformation conductive block 2 both sides is symmetrical arranged one by one along the vertical center of described deformation conductive block 2, and the vertical center of deformation conductive block 2 and described stress and deformation cavity 1 point-blank described in deformation conductive block 2 described in first group, described quartz piezoelectric sensor, second group.Between the buffer groove 21 of same described deformation conductive block 2 both sides, nearest distance is greater than the width of described quartz piezoelectric sensor, and described in two groups, the length of deformation conductive block 2 is greater than the length of described quartz piezoelectric sensor.In practice, the length of the length of described deformation conductive block 2 and the described quartz piezoelectric sensor width on road surface that equals respectively to weigh.
The present embodiment provides a kind of concrete structure of vehicle dynamic weighing piezoelectric sensor, described stress and deformation cavity 1 is the cylindric cavity being made up of bearing up-down force chamber wall and stress and deformation chamber, left and right wall, wherein, the inwall of upper and lower two described stressed chamber walls forms two stressed boss, the outside surface of two described stressed boss is that bearing up-down force inner cavity surface is parallel to each other, makes described stress and deformation cavity 1 vertical applied force equilibrium pass to described deformation conductive block 2; The wall thickness uniformity of upper and lower two described stressed chamber walls, the wall thickness uniformity in two described stress and deformation chambeies, left and right, wall thickness is uniformly columnar structured makes the stressed transition of described stress and deformation cavity 1 even, side direction can be born larger shearing force, the vertical force that acts on described stress and deformation cavity 1 is concentrated in described deformation conductive block 2, and the accuracy of the weighing of this dynamic weighing sensor for vehicle increases greatly.
For the ease of the installation of described quartz piezoelectric sensor and deformation conductive block 2 and fixing; the present invention also comprises the mounting framework 5 being arranged in described stress and deformation cavity; described mounting framework 5 comprises two groups of risers and is arranged on the transverse slat between riser described in two groups, offers N quartz wafer protection hole on described transverse slat.Described quartz piezoelectric sensor comprise top electrode, bottom electrode and be arranged on described top electrode and described bottom electrode between N bauerite wafer, described top electrode and described bottom electrode form described electrode 3.Described transverse slat is fastened between described top electrode and described bottom electrode; and equi-spaced apart is provided with N quartz wafer protection hole; described quartz wafer is arranged in described quartz wafer protection hole, and described transverse slat is protruded respectively in its upper and lower end face, forms described quartz wafer group 4.Described in two groups, deformation conductive block 2 is arranged in described mounting framework 5, and the upper and lower end face that described in first group, described in the upper stress surface of deformation conductive block 2 and second group, the lower stress face of deformation conductive block 2 protrudes respectively described mounting framework 5 transverse slats, and N is natural number.
Do as a whole location in described stress and deformation cavity 1 for the ease of described mounting framework 5, described stressed conductive block 2 and described quartz piezoelectric sensor three, the outside of 5 liang of group risers of described mounting framework is respectively arranged with support body registration arm, and the support body registration arm outer end of described mounting framework 5 both sides is left and right stress and deformation internal chamber wall and the noncontact setting of corresponding described stress and deformation cavity 1 respectively.
The described stressed section bar of weighing also comprises weigh stressed top board 6 and the support baseboard 7 of weighing that be arranged in parallel, described in described stress and deformation cavity 1 is arranged on, weigh stressed top board 6 and described in weigh between support baseboard 7, the center of described stress and deformation cavity 1, described in weigh stressed top board 6 and described in the weigh center of support baseboard 7 on a vertical curve, make described stress and deformation cavity 1 vertical applied force balanced and along vertically to described quartz piezoelectric sensor passes.
The present invention also comprises the road surface stress layer 8 of weighing on stressed top board 6 described in being arranged on, and described road surface stress layer 8 can be selected the material suitable with Pavement Performance.The both sides of described stressed cavity 1 are respectively arranged with buffer compartment absciss layer 91, and described buffer compartment absciss layer 91 is made up of frothing foam.In the time that stress and deformation cavity outwards produces deformation, buffer compartment absciss layer 91 can play buffer action, in addition, building embedding when fixing, can play the buffer action between Embedding Material and described stressed cavity 1.Described road surface stress layer 8 and described in the weigh both sides of stressed top board 6 be respectively arranged with separation layer 92, described separation layer 92 is made up of foam.Building embedding when fixing, described separation layer 92 can play Embedding Material and described road surface stress layer 8 and described in the weigh buffer action of stressed top board 6.
When installation, weigh support baseboard 7 down, this vehicle dynamic weighing piezoelectric sensor is positioned in the groove having excavated, stress layer 8 upper surfaces in road surface are concordant with road surface, then build embedding and fix.
Vehicle is by road surface stress layer 8, then, the gravity of vehicle is passed to weigh stressed top board 6, stress and deformation cavity 1 and deformation conductive block 2 successively, now, vertical acting force is passed to uniformly quartz piezoelectric sensor by deformation conductive block 2, now, the stressed generation electric charge of quartz wafer, because the quantity of electric charge is directly proportional to external force size, detect the number of produced electric charge with circuit, can calculate the weight of vehicle or weight.
Piezoelectric effect refers to some crystal, and in the time being subject to External Force Acting along certain orientation, inner meeting produces polarization phenomena, produces the electric charge that equal and opposite in direction symbol is contrary on its two stress surface simultaneously; After external force is removed, return to again not electriferous state; In the time that force direction changes, the polarity of electric charge is also along with change; Stressed the produced quantity of electric charge of crystal is directly proportional to the size of external force.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request protection of the present invention.
Claims (9)
1. a vehicle dynamic weighing piezoelectric sensor, include weigh stressed section bar and quartz piezoelectric sensor, the described stressed section bar of weighing includes stress and deformation cavity, it is characterized in that: it also comprises two groups of deformation conductive block, deformation conductive block described in first group, described in described quartz piezoelectric sensor and second group, deformation conductive block is all arranged in described stress and deformation cavity and is sequentially superimposed from top to bottom, described in first group, the lower stress face of the upper stress surface of deformation conductive block and deformation conductive block described in second group contacts with the bearing up-down force inner cavity surface of described stress and deformation cavity respectively, described deformation conductive block both sides offer respectively buffer groove.
2. vehicle dynamic weighing piezoelectric sensor according to claim 1, it is characterized in that: the buffer groove of described deformation conductive block both sides is symmetrical arranged one by one along the vertical center of described deformation conductive block, the vertical center of deformation conductive block and described stress and deformation cavity point-blank described in deformation conductive block described in first group, described quartz piezoelectric sensor, second group.
3. vehicle dynamic weighing piezoelectric sensor according to claim 2, it is characterized in that: between the buffer groove of same described deformation conductive block both sides, nearest distance is not less than the width of described quartz piezoelectric sensor, and described in two groups, the length of deformation conductive block is not less than the length of described quartz piezoelectric sensor.
4. according to the vehicle dynamic weighing piezoelectric sensor described in claim 1-3 any one, it is characterized in that: described stress and deformation cavity is the cylindric cavity being made up of bearing up-down force chamber wall and stress and deformation chamber, left and right wall, wherein, the inwall of upper and lower two described stressed chamber walls forms two stressed boss, and the outside surface of two described stressed boss is that bearing up-down force inner cavity surface is parallel to each other.
5. vehicle dynamic weighing piezoelectric sensor according to claim 4, is characterized in that: the wall thickness uniformity of upper and lower two described stressed chamber walls, the wall thickness uniformity of two the described stress and deformation chamber walls in left and right.
6. according to the vehicle dynamic weighing piezoelectric sensor described in claim 1-3 any one, it is characterized in that: it also comprises the mounting framework being arranged in described stress and deformation cavity, described mounting framework comprises two groups of risers and is arranged on the transverse slat between riser described in two groups, offers N quartz wafer protection hole on described transverse slat; Described quartz piezoelectric sensor comprise top electrode, bottom electrode and be arranged on described top electrode and described bottom electrode between N bauerite wafer; Described transverse slat is fastened between described top electrode and described bottom electrode; and equi-spaced apart is provided with N quartz wafer protection hole; described quartz wafer is arranged in described quartz wafer protection hole; described transverse slat is protruded respectively in its upper and lower end face; described in two groups, deformation conductive block is arranged in described mounting framework; and the upper and lower end face that described in first group, described in the upper stress surface of deformation conductive block and second group, the lower stress face of deformation conductive block protrudes respectively described mounting framework, N is natural number.
7. vehicle dynamic weighing piezoelectric sensor according to claim 6, it is characterized in that: the outside of two groups of risers of described mounting framework is respectively arranged with support body registration arm, the support body registration arm outer end of described mounting framework both sides is left and right stress and deformation internal chamber wall and the noncontact setting of corresponding described stress and deformation cavity respectively.
8. vehicle dynamic weighing piezoelectric sensor according to claim 7, it is characterized in that: described in the stressed section bar of weighing also comprise weigh stressed top board and the support baseboard of weighing that be arranged in parallel, and the road surface stress layer of weighing described in being arranged on stressed top board, described in described stressed cavity is arranged on, weigh stressed top board and described in weigh between support baseboard, the center of described stress and deformation cavity, described in weigh stressed top board and described in weigh the center of support baseboard on a vertical curve.
9. vehicle dynamic weighing piezoelectric sensor according to claim 8, is characterized in that: described stress and deformation cavity both sides are respectively arranged with buffer compartment absciss layer, described road surface stress layer and described in the weigh both sides of stressed top board be respectively arranged with separation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410341077.5A CN104101410A (en) | 2014-07-18 | 2014-07-18 | Dynamic weighing piezoelectric sensor for vehicles |
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| CN201410341077.5A CN104101410A (en) | 2014-07-18 | 2014-07-18 | Dynamic weighing piezoelectric sensor for vehicles |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374459A (en) * | 2014-11-01 | 2015-02-25 | 绵阳市奇石缘科技有限公司 | I-beam type vehicle dynamic weighing sensor |
| CN105509852A (en) * | 2015-12-01 | 2016-04-20 | 北京派和科技股份有限公司 | Dynamic weighing sensor |
| CN106652476A (en) * | 2017-02-24 | 2017-05-10 | 成都皆为科技有限公司 | Drive wheel identification device |
| 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 |
| CN107340041A (en) * | 2017-07-15 | 2017-11-10 | 四川奇石缘科技股份有限公司 | Resistance-strain type vehicle weighing sensor |
| CN112729509A (en) * | 2020-12-30 | 2021-04-30 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method |
| CN112763039A (en) * | 2020-12-30 | 2021-05-07 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| CN112781700A (en) * | 2020-12-30 | 2021-05-11 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| CN113358198A (en) * | 2021-06-08 | 2021-09-07 | 南阳理工学院 | Be used for vehicle to move heavy piezoelectric sensor |
| CN113503947A (en) * | 2021-08-04 | 2021-10-15 | 东莞市速力科技有限公司 | Constant temperature quartz dynamic sensor |
| CN113795734A (en) * | 2019-05-07 | 2021-12-14 | 基斯特勒控股公司 | Sensor assembly |
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| 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 |
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| CN107340041A (en) * | 2017-07-15 | 2017-11-10 | 四川奇石缘科技股份有限公司 | Resistance-strain type vehicle weighing sensor |
| CN107340041B (en) * | 2017-07-15 | 2024-05-31 | 四川奇石缘科技股份有限公司 | Resistance strain type vehicle weighing sensor |
| CN113795734A (en) * | 2019-05-07 | 2021-12-14 | 基斯特勒控股公司 | Sensor assembly |
| CN112781700A (en) * | 2020-12-30 | 2021-05-11 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| CN112729509B (en) * | 2020-12-30 | 2023-05-09 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method |
| CN112763039A (en) * | 2020-12-30 | 2021-05-07 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| CN112729509A (en) * | 2020-12-30 | 2021-04-30 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method |
| CN113358198B (en) * | 2021-06-08 | 2022-09-23 | 南阳理工学院 | Be used for vehicle to move heavy piezoelectric sensor |
| CN113358198A (en) * | 2021-06-08 | 2021-09-07 | 南阳理工学院 | Be used for vehicle to move heavy piezoelectric sensor |
| CN113503947A (en) * | 2021-08-04 | 2021-10-15 | 东莞市速力科技有限公司 | Constant temperature quartz dynamic sensor |
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