CN204422041U - A kind of dynamic piezoelectric formula quartz transducer weight-measuring device - Google Patents
A kind of dynamic piezoelectric formula quartz transducer weight-measuring device Download PDFInfo
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- CN204422041U CN204422041U CN201520125621.2U CN201520125621U CN204422041U CN 204422041 U CN204422041 U CN 204422041U CN 201520125621 U CN201520125621 U CN 201520125621U CN 204422041 U CN204422041 U CN 204422041U
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Abstract
The utility model provides a kind of dynamic piezoelectric formula quartz transducer weight-measuring device, and described weight-measuring device comprises a loading plate, a support and a quartzy sensitive element, and wherein, described loading plate is arranged on the top of described support, in order to bear the weight of dynamic vehicle; Described quartzy sensitive element is arranged between two projections of described mid-stent, decreases the space of described rack bore, and in order to measure the weight of described dynamic vehicle.Dynamic piezoelectric formula quartz transducer weight-measuring device described in the utility model decreases the space of described rack bore, adds the bending strength of described weight-measuring device, decreases the amount of elastic deformation of described support, add the serviceable life of described weight-measuring device; And in the process passed through at vehicle of described quartz transducer, detect the dynamic force of tire, thus calculate the data such as the heavy and complete vehicle weight of wheel load, axle.
Description
Technical field
The utility model relates to a kind of weight-measuring device, particularly a kind of dynamic piezoelectric formula quartz transducer weight-measuring device.
Background technology
Quartz (SiO
2) be a kind of natural piezoelectric, when by External Force Acting, quartz surfaces just can produce electric charge, i.e. piezoelectric effect.Use optical crystal angular instrument can measure the direction of crystal, the cutting mode that crystal has longitudinal direction, transverse direction and shearing three kinds different, the quartz crystal of a certain cutting mode is only responsive to the power of respective direction, is called longitudinal effect, transversal effect and shearing effect.Utilize this characteristic of quartz can manufacture vehicle dynamic weight sensing instrument.
Refer to Chinese patent " dynamic weighing piezoelectric sensor for vehicle ", application number: 201220022251.6, the utility model provides a kind of dynamic weighing piezoelectric sensor for vehicle, it includes the stressed section bar of check weighing and quartz piezoelectric sensor, the stressed section bar of described check weighing includes stress and deformation cavity, the stressed top board of check weighing and check weighing support baseboard, described quartz piezoelectric sensor setting is in described stress and deformation cavity, the bearing up-down force face of described quartz piezoelectric sensor contacts with the stressed inner cavity surface of deformation up and down of described stress and deformation cavity respectively, the stressed top board of described check weighing and described check weighing support baseboard be arranged in parallel, described stress and deformation cavity is arranged between the stressed top board of described check weighing and described check weighing support baseboard, the center of external cavity surface up and down of described stress and deformation cavity is separately positioned on the center of the stressed top board of described check weighing and described check weighing support baseboard.This dynamic weighing piezoelectric sensor for vehicle has design science, can realize dynamically weighting, measured value precision is high, check weighing efficiency is high, be easy to the advantage of producing and installing.
But described stress and deformation cavity is comparatively large, has increased the weight of the anti-pressure ability of the stressed section bar of described check weighing, has added the amount of elastic deformation of described heavy stressed section bar, the deformation quantity produced is made to be not easy to recover.
In view of above-mentioned defect, the utility model creator obtains the utility model finally through long research and practice.
Utility model content
The purpose of this utility model is, provides a kind of dynamic piezoelectric formula quartz transducer weight-measuring device, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the technical solution adopted in the utility model is, a kind of dynamic piezoelectric formula quartz transducer weight-measuring device is provided, described weight-measuring device comprises a loading plate, a support and a quartzy sensitive element, wherein, described loading plate is arranged on the top of described support, in order to bear the weight of dynamic vehicle; Described quartzy sensitive element is arranged on described mid-stent, in order to measure the weight of described dynamic vehicle.
Dynamic piezoelectric formula quartz transducer weight-measuring device described in the utility model decreases the space of described rack bore, add the bending strength of described weight-measuring device, decrease the amount of elastic deformation of described support, add the serviceable life of described weight-measuring device, and in the process passed through at vehicle of described quartz transducer, detect the dynamic force of tire, thus calculate the data such as the heavy and complete vehicle weight of wheel load, axle.
Preferably, described weight-measuring device also comprises an elastomeric element, a cable tray and a power transmission signal line, wherein, the sidewall of described elastomeric element and described support is nested, in order to cushion described dynamic vehicle through the acting force of described weight-measuring device to described support; Described cable tray is installed on the bracket, as the direction of routing of described power transmission signal line.
Preferably, described weight-measuring device also comprises a separation layer, and described separation layer is arranged on the both sides of described loading plate and described frame upper, and described separation layer plays the buffer action between Embedding Material and described weight-measuring device.
Described in the utility model, separation layer is made up of foam, and when building embedding and fixing, described separation layer can play the buffer action between Embedding Material and described weight-measuring device.
Preferably, the upper surface of described support and lower surface all have multiple notch, the described notch of described rack upper surface is in order to increase the friction force between described support and described loading plate, and the described notch of described support lower surface is in order to improve the grasp force between described support and ground.
Preferably, the both sides, middle part of described support are respectively the junction of a circular arc camber, two described circular arc cambers, inwardly be provided with two projections, described projection, in symmetrical up and down, decrease the intracavity space of described support, adds the bending strength of described weight-measuring device.
Preferably, the section bar of described support to be cross section be " joist steel " shape.
The beneficial effects of the utility model are compared with the prior art: dynamic piezoelectric formula quartz transducer weight-measuring device described in the utility model decreases the space of described rack bore, add the bending strength of described weight-measuring device, decrease the amount of elastic deformation of described support, add the serviceable life of described weight-measuring device; And in the process passed through at vehicle of described quartz transducer, detect the dynamic force of tire, thus calculate the data such as the heavy and complete vehicle weight of wheel load, axle; Described in the utility model, separation layer is made up of foam, and when building embedding and fixing, described separation layer can play the buffer action between Embedding Material and described weight-measuring device.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model dynamic piezoelectric formula quartz transducer weight-measuring device;
Fig. 2 is the structural representation of the utility model embodiment one;
Fig. 3 is the principles of signal processing figure of the utility model dynamic piezoelectric formula quartz transducer weight-measuring device.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the utility model.
Refer to shown in Fig. 1, it is the sectional view of the utility model dynamic piezoelectric formula quartz transducer weight-measuring device; Described weight-measuring device comprises quartzy sensitive element 3, elastomeric element 4, cable tray 5 of loading plate 1, support 2, one power transmission signal line 6 and a separation layer 7, described loading plate 1 is arranged on the top of described support 2, in order to bear the weight of dynamic vehicle; Described quartzy sensitive element 3 is arranged on the middle part of described support 2, and the tire force of described dynamic vehicle is converted to charge signal; Described elastomeric element 4 is nested, in order to cushion described dynamic vehicle through the acting force of described weight-measuring device to described support 2 with the sidewall of described support 2; Described cable tray 5 is arranged on described support 2, as the direction of routing of described power transmission signal line 6, the both sides on described loading plate 1 and described support 2 top are respectively arranged with described separation layer 7, described separation layer 7 is made up of foam, when building embedding and fixing, described separation layer 7 can play the buffer action between Embedding Material and described weight-measuring device.
The cross section of described support 2 is the section bar of " joist steel " shape, preferentially select alloy aluminium section, the both side surface up and down of described support 2 has multiple notch, the notch of upper surface is in order to increase the friction force between described support 2 and described loading plate 1, what described loading plate 1 was installed is more steady, the notch of described support 2 lower surface is in order to improve the grasp force between described support 2 and ground, described weight-measuring device and described ground is prevented to be separated, thus make face of the rolling out-of-flatness on the surface of described weight-measuring device and described ground, cause check weighing data not accurate, the both sides, middle part of described support 2 are respectively a circular arc camber, in order to increase the bending strength of described support 2, the junction of described two circular arc cambers, inwardly be provided with two projections, in symmetrical up and down, decrease the space of described support 2 inner chamber, add the bending strength of described weight-measuring device, decrease the amount of elastic deformation of described support 2, add the serviceable life of described weight-measuring device, described quartzy sensitive element 3 is positioned between described two projections, add the security that described quartzy sensitive element 3 uses, to survey the reliability of data more accurate.
The junction of described projection and described circular arc camber adopts circular sliding slopes, make the connection between described projection and described circular arc camber more firm, be not easy to fracture, add the plasticity between described projection and described circular arc camber, indirectly protect described quartzy sensitive element 3 to scratch because of described fractureing of projection, and the lower end thickness of described projection is larger, be not easy wears, so when vehicle is through described weight-measuring device, vehicle can be directly passed to described quartzy sensitive element 3 by described support for the pressure of described loading plate 1, solve described projection to cause due to wearing and tearing occurring gap between described projection and described quartzy sensitive element 3, make the inaccurate problem of check weighing numerical value, guarantee that be in face between described projection with described quartzy sensitive element 3 contacts always, also improve the precision of described weight-measuring device accordingly.
Described quartzy sensitive element 3 can directly contact with between described projection; also layer protecting film (in figure the rectangular expression of black) can be increased between described quartzy sensitive element 3 and described projection; when vehicle is through described weight-measuring device; in pressure conduction process; the surface of described projection can not be caused the scuffing on described quartzy sensitive element 3 surface, and cause the decline of the measuring accuracy of described quartzy sensitive element 3.
When vehicle is by described loading plate 1, the gravity of described vehicle is delivered to successively the middle part of described support 2 from the top of described support 2, now, also there is micro-deformation in the described circular arc camber vertical applied force at the middle part of described support 2, the die cavity in the middle part of described support 2 is made also vertical deformation to occur, described in the inside of then described circular arc camber junction, the protruding bearing up-down force face vertical strength being passed to described quartzy sensitive element 3, makes described quartzy sensitive element 3 stress and deformation, produces electric charge.
Dynamic piezoelectric formula quartz sensitive element 3 weight-measuring device described in the utility model decreases the space of described support 2 inner chamber, add the bending strength of described weight-measuring device, decrease the amount of elastic deformation of described support 2, add the serviceable life of described weight-measuring device, and in the process passed through at vehicle of described quartzy sensitive element 3, detect the dynamic force of tire, thus calculate the data such as the heavy and complete vehicle weight of wheel load, axle.
Described quartzy sensitive element 3 has good long-time stability, has extremely wide measurement range; From low speed to high speed, extremely short response time and very large dynamic range, degree of protection I P68; Water-tight is functional, insensitive to temperature variation; Quick and easy for installation, adapt to different roads; Be arranged on without jut behind road surface, safety durable, sensor surface 10mm layer of can milling is guaranteed to keep smooth with road surface.
Embodiment one
Weight-measuring device as described above, the present embodiment and its difference are, consult shown in Fig. 2, and it is the structural representation of the utility model embodiment one; The junction of described two circular arc cambers; described two projections of inside setting link together, and its junction forms a closed space, with lay described quartzy sensitive element 3; increase the protection to described quartzy sensitive element 3, make the precision of described weight-measuring device more accurate.
Embodiment two
Weight-measuring device as described above, the present embodiment and its difference are, the present embodiment provides the mode of the signal transacting to described weight-measuring device, consults shown in Fig. 3, and it is the principles of signal processing figure of the utility model dynamic piezoelectric formula quartz transducer weight-measuring device; Described weight-measuring device combines with amplifier 8, A/D converter 9, embedded computer 10, described weight-measuring device converts charge signal by described quartzy sensitive element 3 pressure the weight of described dynamic vehicle, by described power transmission signal line 6, described charge signal is passed to described amplifier 8 again, through described amplifier 8, described charge signal is converted to analog voltage, by described A/D converter 9, described analog voltage signal is converted to digital signal again, draws weighing result finally by described embedded computer 10 and special software thereof.
Described amplifier 8 input end connects described quartzy sensitive element 3 by supporting high impedance concentric cable, and the charge signal that described quartzy sensitive element 3 exports is converted to voltage signal.Described amplifier 8 is according to technical grade standard design, and degree of protection is IP67, adopt the encapsulation of cast aluminium alloy shell, there is electromagnetic shielding action, antijamming capability is strong, the strong adaptability of environment temperature, long-term work stability strong.There is multiple product specification according to port number difference, formed measuring system to coordinate varying number sensor.Described amplifier 8 has high input impedance (>1012 Ω), to reduce the shunting to signal, ensures measuring accuracy.
When install described weight-measuring device time, perpendicular to the direction of highway being dug the groove that 75mm is wide, 50mm is dark, then, described dynamic piezoelectric formula quartz transducer weight-measuring device is positioned in described groove, then build embedding fix.
When vehicle is by described loading plate 1, the gravity of described vehicle is delivered to successively the middle part of described support 2 from the top of described support 2, now, also there is micro-deformation in the described circular arc camber vertical applied force at the middle part of described support 2, the die cavity in the middle part of described support 2 is made also vertical deformation to occur, the protruding bearing up-down force face vertical strength being passed to described quartzy sensitive element 3 described in the inside of then described circular arc camber junction, make described quartzy sensitive element 3 stress and deformation, produce electric charge, then described charge signal is converted to analog voltage through described amplifier 8 described charge signal, by described A/D converter 9, described analog voltage signal is converted to digital signal again, weighing result is drawn finally by described embedded computer 10 and special software thereof.
Utilize the piezoelectric effect of described quartz crystal, when vehicle or weight are pressed on described quartz crystal, described quartz crystal the two poles of the earth produce electric charge, because the quantity of electric charge is directly proportional to external force size, detect the number of produced electric charge with circuit, the weight of vehicle or weight can be calculated.
Piezoelectric effect refers to some crystal, and when being subject to External Force Acting along certain orientation, inside can produce polarization phenomena, at it, certain two surface produces the contrary electric charge of equal and opposite in direction symbol simultaneously; After external force is removed, return to again not electriferous state; When 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.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that the utility model claim limits to it, amendment, even equivalence, but all will fall in protection domain of the present utility model.
Claims (6)
1. a dynamic piezoelectric formula quartz transducer weight-measuring device, is characterized in that, described weight-measuring device comprises a loading plate, a support and a quartzy sensitive element, and wherein, described loading plate is arranged on the top of described support, in order to bear the weight of dynamic vehicle; Described quartzy sensitive element is arranged on described mid-stent, in order to measure the weight of described dynamic vehicle.
2. weight-measuring device according to claim 1, it is characterized in that, described weight-measuring device also comprises an elastomeric element, a cable tray and a power transmission signal line, wherein, the sidewall of described elastomeric element and described support is nested, in order to cushion described dynamic vehicle through the acting force of described weight-measuring device to described support; Described cable tray is installed on the bracket, as the direction of routing of described power transmission signal line.
3. weight-measuring device according to claim 2, it is characterized in that, described weight-measuring device also comprises a separation layer, and described separation layer is arranged on the both sides of described loading plate and described frame upper, and described separation layer plays the buffer action between Embedding Material and described weight-measuring device.
4. weight-measuring device according to claim 1, it is characterized in that, the upper surface of described support and lower surface all have multiple notch, the described notch of described rack upper surface is in order to increase the friction force between described support and described loading plate, and the described notch of described support lower surface is in order to improve the grasp force between described support and ground.
5. the weight-measuring device according to claim 1 or 4, it is characterized in that, the both sides, middle part of described support are respectively a circular arc camber, the junction of two described circular arc cambers, inwardly be provided with two projections, described projection, in symmetrical up and down, decrease the intracavity space of described support, adds the bending strength of described weight-measuring device.
6. the weight-measuring device according to claim 1 or 4, is characterized in that, the section bar of described support to be cross section be " joist steel " shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520125621.2U CN204422041U (en) | 2015-03-04 | 2015-03-04 | A kind of dynamic piezoelectric formula quartz transducer weight-measuring device |
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| CN201520125621.2U CN204422041U (en) | 2015-03-04 | 2015-03-04 | A kind of dynamic piezoelectric formula quartz transducer weight-measuring device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547422A (en) * | 2016-01-17 | 2016-05-04 | 王晓 | Integrated-type piezoelectric dynamic weighing sensor and manufacturing method and equipment therefor |
| 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 |
| CN109506747A (en) * | 2018-11-28 | 2019-03-22 | 中北大学 | A kind of weighing piezoelectric transducer, preparation method and freeway weighing system |
| CN110274674A (en) * | 2018-03-16 | 2019-09-24 | 基斯特勒控股公司 | Hollow material and corresponding dynamic weighing sensor for dynamic weighing sensor |
| CN110455384A (en) * | 2019-09-19 | 2019-11-15 | 深圳和通天下科技有限公司 | A kind of quartz type dynamic and intelligent weighing system |
| 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 |
| 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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2015
- 2015-03-04 CN CN201520125621.2U patent/CN204422041U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547422A (en) * | 2016-01-17 | 2016-05-04 | 王晓 | Integrated-type piezoelectric dynamic weighing sensor and manufacturing method and equipment therefor |
| 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 |
| CN106846821B (en) * | 2017-02-24 | 2023-09-01 | 成都皆为科技有限公司 | Full-vehicle type recognition system |
| CN106652476B (en) * | 2017-02-24 | 2023-08-15 | 成都皆为科技有限公司 | Driving wheel identification device |
| CN110274674A (en) * | 2018-03-16 | 2019-09-24 | 基斯特勒控股公司 | Hollow material and corresponding dynamic weighing sensor for dynamic weighing sensor |
| CN109506747B (en) * | 2018-11-28 | 2020-11-17 | 中北大学 | Weighing piezoelectric sensor, preparation method thereof and highway weighing system |
| CN109506747A (en) * | 2018-11-28 | 2019-03-22 | 中北大学 | A kind of weighing piezoelectric transducer, preparation method and freeway weighing system |
| CN113795734A (en) * | 2019-05-07 | 2021-12-14 | 基斯特勒控股公司 | Sensor assembly |
| CN110455384A (en) * | 2019-09-19 | 2019-11-15 | 深圳和通天下科技有限公司 | A kind of quartz type dynamic and intelligent weighing system |
| 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 |
| 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 |
| 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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Granted publication date: 20150624 Termination date: 20160304 |