CN202090301U - Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification - Google Patents
Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification Download PDFInfo
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- CN202090301U CN202090301U CN2011201306209U CN201120130620U CN202090301U CN 202090301 U CN202090301 U CN 202090301U CN 2011201306209 U CN2011201306209 U CN 2011201306209U CN 201120130620 U CN201120130620 U CN 201120130620U CN 202090301 U CN202090301 U CN 202090301U
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Abstract
The utility model discloses an integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification, which consists of an integrated circuit, a rubber rod and a wire groove type installing support frame, wherein the integrated circuit board is formed by integrating pressure sensitive sensors in dot-matrix type distribution onto a long and narrow circuit board and is positioned in the rubber rod, wherein the middle of the rubber rod is chiseled to be in a hollow state, both ends of the rubber rod are sealed, the rubber rod is positioned in the wire groove type installing support frame, the integrated circuit board is connected with a processor through a conducting wire, and the conducting wire passes out from one end of the rubber rod. The device has the advantages of miniaturization, low power consumption, reliability and the like, the pressure sensitive sensors are embedded into the rubber rod, the damage to the pressure sensitive sensors caused by the severe service environment is avoided, the service life of the device is prolonged, in addition, because of the flexible characteristic of the rubber rod and the wire groove type installing support frame corresponding to the shape of the rubber rod, the installing/unplugging of the rubber rod into/from the wire groove type support frame is easy to realize, and the installation, the maintenance and the replacement are easy.
Description
Technical field
The utility model relates to a kind of dot matrix pressure-responsive apparatus, particularly relates to a kind of integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft.Be mainly used in the detection of identification of motor vehicles wheel shaft and tire quantity (list/twins), comprise the automatic model recognition system of toll road, the transportation management system that transfinites, automatic vehicle classification system, weight metering charging system and traffic study and traffic volume statistics etc.
Background technology
For highways at different levels, in order to realize the weight metering charging to vehicular traffic, the detection of transfiniting, need accurately to grasp the tire quantity of each vehicular traffic, so that calculate.Usually according to the wheel shaft and the tire quantity of vehicle, realize high-precision automatic vehicle classification.So-called wheel shaft identifying system is meant by vehicle it is rolled each one-sided tire quantity of judging vehicle, unites with weighing platform simultaneously and judges that the axle type is twin shaft or three shaft couplings.
Main axle sensor and wheel shaft identifier two classes of adopting are surveyed in existing motor vehicle wheel repacking.Axle sensor commonly used comprises Fibre Optical Sensor, piezoelectric axis sensor, pressure sensitive elastomer axle sensor or air pipe axle sensor etc., and it parallel constitutes with the garage direction axle sensor into about 45 by two; When wheel ground axle sensor, the output of sensor changed once, then is judged as single-wheel, and changing twice is two-wheel; Or whether simultaneously pressed according to two parallel axes sensors and to be judged whether to be two-wheel.Yet because the size or the width of tire are different, the wheelspan difference of two-wheel, and the lateral attitude of vehicle when the lane in which the drivers should pay fees travels has bigger randomness again, so two-wheel accurately detects a difficult problem that is still in the wheel shaft identification, and at home, because overload of vehicle is very general, fiber axis sensor, pressure sensitive elastomer rod axle sensor or air pipe sensor very easily damage.
The used wheel shaft of preceding weight metering charging and overload detection system detects main linear array formula pressure switch type or the LOAD CELLS wheel shaft recognition device of adopting, being mainly used in lorry list two-wheel judges, because such Sensor section directly exposes on wheel shaft recognition device surface, be subject to electromagnetic interference, in abominable environment for use, be vulnerable to water, silt, dust, greasy dirt, high and low temperature, factors such as high low humidity are damaged, also be vulnerable to simultaneously the jerk of vehicle, damaged by pressure by overloaded vehicle and lost efficacy, it is low therefore to exist reliability, application life is short, the fault rate height, to shortcoming such as the verification and measurement ratio of dolly tire is low.In addition, the common defects that the wheel shaft identifier exists is complex structure, fault rate height, application life is short, the detection accuracy rate is low, and lacks unified operating standard; Simultaneously often because the damage of a sensor need be reinstalled working service upkeep cost height to it.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that existing motor vehicles wheel shaft recognition device exists, a kind of detection of taking turns wide, wheelspan, wheel number, wheel shaft, the number of axle is provided, high accuracy, high reliability, long-life, the highly sensitive integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft, degree of protection reaches IP67.
The purpose of this utility model is achieved through the following technical solutions:
A kind of integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft is formed the pressure-responsive apparatus by surface-mounted integrated circuit 1, rubber bar 2 and slot type mounting bracket 3; Described surface-mounted integrated circuit 1 constitutes by being on the circuit board 5 that voltage sensitive sensor 4 that dot matrix distributes is integrated in a sleeve configuration, and the distance between the adjacent voltage sensitive sensor 4 is 6 ~ 8mm; Described surface-mounted integrated circuit 1 is positioned at a rubber bar 2; The centre of described rubber bar 2 is forced, closed at both ends, and its cross section is trapezoidal, the side is a zigzag; Described rubber bar 2 is positioned at slot type mounting bracket 3, and described slot type mounting bracket 3 is the shaped as frame structure of upper end open, and the cross section of opening is up-small and down-big isosceles trapezoid; Described surface-mounted integrated circuit 1 is connected by lead 6 with processor, and described lead 6 is passed by an end of rubber bar 2.
Voltage sensitive sensor described in the utility model is an open the light sensor or near switch sensor of pressure sensor, optoelectronic switch sensor, contact.
Rubber bar described in the utility model with the fixed form of slot type mounting bracket is: be connected with frictional force between the slot type mounting bracket by the sawtooth of rubber bar side.
The number of voltage sensitive sensor described in the utility model is 16 ~ 59.
The number of voltage sensitive sensor described in the utility model is preferably 24.
Wire casing mounting bracket described in the utility model is metallic support or non-metal frame.
The utility model compared with prior art has following advantage and beneficial effect:
1. long service life, reliability height: the rubber bar that is embedded with the circuit plate of integrated voltage sensitive sensor is installed in the shaped as frame structure mounting bracket of the upper end open that high-strength material makes, a plurality of voltage sensitive sensors are dot matrix and distribute, and be integrated on the circuit board, thereby realize the integrated of rubber bar and integrated dot matrix voltage sensitive sensor; The mounting bracket end face flushes with the road surface, rubber bar is connected with the slot type support by its side sawtooth, when on the tyre pressure during rubber bar, rubber bar produces after the less deformation mainly by the road surface and reliably bears the impact force of the heavy and wheel of axle with mounting bracket, plays the effect of protecting the dot matrix voltage sensitive sensor;
2. used rubber bar has high abrasion, anti-aging and grease proofing, characteristic such as flexibility preferably, can more or less freelyly be pressed into the neutralization of slot type support to extract, thereby be easy to install, safeguards and change;
3. voltage sensitive sensor and rubber bar integrate, and the two ends of rubber bar are sealings, lead passes and receives processor by an end of rubber bar, the device degree of protection reaches IP67, has avoided damaging voltage sensitive sensor because of the factors such as jerk of water, silt, dust, greasy dirt, high and low temperature, high humility and vehicle in the abominable environment for use;
4. wheel shaft detection sensitivity height: because rubber bar hardness is lower, after a plurality of dot matrix voltage sensitive sensors were integrated on the long and narrow circuit board, the wheel shaft detection sensitivity was high;
5. certainty of measurement height: because voltage sensitive sensor adopts dot matrix to arrange, point-blank connect at interval, make that pressure-responsive device can high-acruracy survey wheel width (measure error by voltage sensitive sensor gather degree decision), wheel are wide, wheelspan and wheel number.
Description of drawings
Fig. 1 is the integrated dot matrix voltage sensitive sensor apparatus structure schematic diagram that is used for the identification of motor vehicle wheel shaft of the utility model embodiment 1.
Fig. 2 is the integrated dot matrix voltage sensitive sensor structural representation of the utility model embodiment 1.
Fig. 3 is the schematic cross-section of the rubber bar of embodiment 2 integrated dot matrix voltage sensitive sensors of the present utility model.
Fig. 4 takes turns number for embodiment 3 of the present utility model and wheelspan detects schematic diagram.
Fig. 5 is that embodiment 3 number of axle of the present utility model and wheelbase detect schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail, but embodiment is not limited thereto.
As shown in Figure 1, 2, be used for the integrated dot matrix pressure-responsive apparatus of motor vehicles wheel shaft identification, form the pressure-responsive apparatus by surface-mounted integrated circuit 1, rubber bar 2 and slot type mounting bracket 3; Surface-mounted integrated circuit 1 constitutes by being on the circuit board 5 that voltage sensitive sensor 4 that dot matrix distributes is integrated in a sleeve configuration, and the distance between the adjacent voltage sensitive sensor 4 is 6 ~ 8mm; Surface-mounted integrated circuit 1 is positioned at a rubber bar 2; Rubber bar 2 is high abrasion, age inhibiting rubber bar, and is middle forced, closed at both ends, and its cross section is trapezoidal, the side is a zigzag; Rubber bar 2 is positioned at slot type mounting bracket 3, and slot type mounting bracket 3 is the ductile iron support, and it is the shaped as frame structure of upper end open, and the cross section of opening is up-small and down-big isosceles trapezoid; Surface-mounted integrated circuit 1 is connected by lead 6 with processor, and lead 6 is passed by an end of rubber bar 2, thereby realizes the integrated of dot matrix pressure-responsive apparatus of the present utility model.
During use, dig sky hole of cutter on the ground, the slot type support is placed on the inside, empty hole, can or directly fix the slot type support with cement, epoxy resin, mixed earth with bolt.Because this device is installed in the rubber bar voltage sensitive sensor is integrated, rubber bar and slot type mounting bracket are connected and fixed by the sawtooth of rubber bar side and the frictional force between mounting bracket, therefore a plurality of voltage sensitive sensor device units connect on a long and narrow circuit board at interval, form integrated dot matrix pressure-responsive apparatus.Because the dolly tyre width is generally all greater than 15cm, the lane in which the drivers should pay fees width of roadway is 3 ~ 5m, the feasible width of roadway of actual vehicle is 2.7 ~ 4.7m, for guaranteeing that tire can be pressed on the dot matrix pressure-responsive apparatus, pressure-responsive apparatus center to center distance is 12mm, and the number that needs the pressure-responsive apparatus is 24 ~ 39; For guarantee to push down two pressure-responsive apparatuses at least at every turn, to reach the purpose of reliable detection, the number that needs the pressure-responsive apparatus is 48 ~ 78; At least press three pressure-responsive apparatuses as each every wheel, the number that needs the pressure-responsive apparatus is 72 ~ 118; In addition, because vehicle two ends wheel number is to be symmetrically distributed, preferred pressure-responsive apparatus is 24 ~ 59.Because the lane in which the drivers should pay fees width is generally 3.2m, need more preferably 24 of the numbers of pressure-responsive apparatus.Detect as only being used for lorry list two-wheel, the number that needs the pressure-responsive apparatus is for being at least 8.
Voltage sensitive sensor of the present utility model is for measuring the pressure sensor of rubber bar inner chamber top pressure size, or measure the blocking type optoelectronic switch, contact switch of rubber bar inner chamber deformation, near switch sensor.If as measuring top of chamber pressure size in the rubber bar, but adopts pressure sensor, it can be converted to the signal of telecommunication with the changing value of pressure sensor pressure, change-over circuit on the computer will be converted to data signal from the signal of telecommunication of pressure sensor, when changing value surpassed preset threshold, then thinking had wheel to pass through.If as measuring the downward shift size of top of chamber in the rubber bar, can adopt the optoelectronic switch sensor that obstructs the light because of the displacement downwards of top of chamber in the rubber bar, also can adopt because of top of chamber in the rubber bar is shifted downwards and make the electric shock switch sensor, also can adopt near switch sensor, these sensors can reach certain value back direct generation switching signal according to the size that top of chamber in the rubber bar is shifted downwards and pass to the computer sampling circuit and judge whether that wheel passes through.
The circuit board of integrated dot matrix voltage sensitive sensor is embedded in the rubber bar, can avoid damaging voltage sensitive sensor, and the grinding pressure of each position of motor vehicle tire be passed to the voltage sensitive sensor of relevant position because of the factors such as jerk of water, silt, dust, greasy dirt, high and low temperature, high humility and vehicle in the abominable environment for use.
During use, the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft embeds and is installed in road, and slot type mounting bracket end face flushes with the road surface, makes the road surface can reliably bear the impact of wheel pressure with the slot type mounting bracket.The boss of dot matrix pressure-responsive apparatus is higher than slot type mounting bracket 2 ~ 10mm simultaneously, can reach the purpose that improves voltage sensitive sensor sensitivity and avoid damaging voltage sensitive sensor, also can reduce the wearing and tearing of wheel to rubber simultaneously, prolongs the application life of rubber bar.
Embodiment 3
The integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft embeds and is installed in road, across whole track and vertical with the vehicle pass-through direction.Wherein slot type mounting bracket end face flushes in the road surface, and the wire casing width of mounting bracket generally is not more than 60mm, makes to be born reliably with mounting bracket by the road surface mainly after the rubber bar projection section produces than small deformation that axle weighs and the impact force of wheel.Voltage sensitive sensor is connected with computer by analog-digital converter, on the pressure wheel during pressure-responsive apparatus, voltage sensitive sensor is according to rubber bar deformation in various degree and its pressure size and location, its changing value is converted to the signal of telecommunication, simultaneously, change-over circuit on the computer will be converted to data signal from the signal of telecommunication of voltage sensitive sensor, and when changing value surpassed preset threshold, then thinking had wheel to pass through the pressure-responsive apparatus.Simultaneously according to each voltage sensitive sensor RST judge that wheel traveling-position, wheel number, wheel are wide, wheelspan and the number of axle.Wheelspan and direction of traffic can be measured by front and back linear array pressure-responsive apparatus, and the scope that wheelbase is divided is determined by vehicle classification standard or other standard.Concrete detection case is as follows:
(1) wheel number and wheelspan detect
Dot matrix pressure-responsive apparatus comprises a plurality of voltage sensitive sensors 4, and adjacent voltage sensitive sensor 4 connects at interval.As shown in Figure 4, dot matrix pressure-responsive apparatus is made up of 20 voltage sensitive sensor device units, and adjacent voltage sensitive sensor center to center distance is 60mm.When one of voltage sensitive sensor device unit 7 is pushed down by tire 9,28 of voltage sensitive sensor device unit is not pushed down by tire 9, existing at interval between two tires was not rolled the part voltage sensitive sensor, one of continuous several voltage sensitive sensor device units that will be rolled by tire 7 are as pushing down group, if when axle of vehicle passes through linear array pressure-responsive apparatus, rolled the L group altogether and push down group, the wheel number that then can judge this is L.
As when vehicle passes through dot matrix pressure-responsive apparatus, a tire rolled M voltage sensitive sensor device unit, and then its tyre width is: tyre width=adjacent voltage sensitive sensor center to center distance * M.
As having N voltage sensitive sensor not to be triggered when between two tires, then wheelspan is: wheelspan=adjacent voltage sensitive sensor center to center distance * N.
So, can be easy to detect the wheel number of this axletree and take turns wide value and the wheelspan value.
(2) wheelbase and the number of axle detect
Wheelbase detects and can measure by former and later two dot matrix pressure-responsive apparatuses, but the detection of this wheelbase is not a real size of really measuring wheelbase, belongs to which scope but detect wheelbase.The scope that wheelbase is divided is determined by vehicle classification standard and other standard.As shown in Figure 5, at detection zone two dot matrix pressure-responsive apparatuses that are used for the identification of motor vehicles wheel shaft are set, be labeled as dot matrix pressure-responsive apparatus A and dot matrix pressure-responsive apparatus B respectively, direction of traffic is to B by A, A is preceding, B after, device A and the distance of device between the B are L.When vehicle follows first axle of car direction by behind the dot matrix pressure-responsive apparatus A, when pushing down device B again, the number of times that COMPUTER DETECTION device A is pressed, if pressed once, wheelbase＞L then, otherwise wheelbase＜L; After vehicle sailed out of the wheelbase detection zone, the total degree that calculation element A is forced through was number of axle N.
But the utility model high-acruracy survey wheel width (measure error by voltage sensitive sensor gather degree decision), wheel number and wheelspan and the wheelbase and the number of axle have solved that present to detect the precision of taking turns number with axle sensor such as optical fiber, piezoelectricity, pressure drag, condenser types low and be difficult for the difficulty of meter wheel distance.Adopt application life greater than 1,000 ten thousand times voltage sensitive sensor; and voltage sensitive sensor has been adopted the Combined Protection of rubber bar and slot type mounting bracket; the average life span of dot matrix pressure-responsive apparatus has very big advantage greater than 1,000 ten thousand/axle on the raising systematic function.
Claims (6)
1. an integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft is characterized in that, forms the pressure-responsive apparatus by surface-mounted integrated circuit (1), rubber bar (2) and slot type mounting bracket (3); Described surface-mounted integrated circuit (1) is gone up formation by the circuit board (5) that the voltage sensitive sensor (4) that is the dot matrix distribution is integrated in a sleeve configuration, and the distance between the adjacent voltage sensitive sensor (4) is 6 ~ 8mm; Described surface-mounted integrated circuit (1) is positioned at a rubber bar (2); The centre of described rubber bar (2) is forced, closed at both ends, and its cross section is trapezoidal, the side is a zigzag; Described rubber bar (2) is positioned at slot type mounting bracket (3), and described slot type mounting bracket (3) is the shaped as frame structure of upper end open, and the cross section of opening is up-small and down-big isosceles trapezoid; Described surface-mounted integrated circuit (1) is connected by lead (6) with processor, and described lead (6) is passed by an end of rubber bar (2).
2. the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft according to claim 1, it is characterized in that described voltage sensitive sensor is that pressure sensor, blocking type optoelectronic switch sensor, blocking type contact open the light sensor or blocking type near switch sensor.
3. the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft according to claim 1, it is characterized in that described rubber bar with the fixed form of slot type mounting bracket is: be connected with frictional force between the slot type mounting bracket by the sawtooth of rubber bar side.
4. the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft according to claim 1 is characterized in that the number of described voltage sensitive sensor is 16 ~ 59.
5. the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft according to claim 1 is characterized in that the number of described voltage sensitive sensor is preferably 24.
6. the integrated dot matrix pressure-responsive apparatus that is used for the identification of motor vehicles wheel shaft according to claim 1 is characterized in that described wire casing mounting bracket is metallic support or non-metal frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201306209U CN202090301U (en) | 2011-04-28 | 2011-04-28 | Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201306209U CN202090301U (en) | 2011-04-28 | 2011-04-28 | Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification |
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| CN202090301U true CN202090301U (en) | 2011-12-28 |
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| CN2011201306209U Expired - Lifetime CN202090301U (en) | 2011-04-28 | 2011-04-28 | Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779409A (en) * | 2012-07-03 | 2012-11-14 | 华南理工大学 | Bicycle detecting and positioning device and detecting and positioning method |
| CN103279996A (en) * | 2013-05-06 | 2013-09-04 | 华南理工大学 | Vehicle information detecting and recognizing system under multilane condition |
| CN103927883A (en) * | 2014-04-04 | 2014-07-16 | 中国科学院电工研究所 | Impedance imaging vehicle detection system and method based on piezoresistance materials |
| CN104075832A (en) * | 2014-07-16 | 2014-10-01 | 重庆市华驰交通科技有限公司 | Sensor structure used for axle recognizer and axle recognizing method and system |
| CN106012894A (en) * | 2016-05-16 | 2016-10-12 | 天津纽威特橡胶制品股份有限公司 | Trampling and pressing device for plastic runway |
| CN111556689A (en) * | 2020-05-11 | 2020-08-18 | 郑州工程技术学院 | Road surface sensing circuit and protector thereof |
-
2011
- 2011-04-28 CN CN2011201306209U patent/CN202090301U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779409A (en) * | 2012-07-03 | 2012-11-14 | 华南理工大学 | Bicycle detecting and positioning device and detecting and positioning method |
| CN102779409B (en) * | 2012-07-03 | 2014-12-03 | 华南理工大学 | Bicycle detecting and positioning device and detecting and positioning method |
| CN103279996A (en) * | 2013-05-06 | 2013-09-04 | 华南理工大学 | Vehicle information detecting and recognizing system under multilane condition |
| CN103279996B (en) * | 2013-05-06 | 2016-05-04 | 华南理工大学 | Information of vehicles in a kind of multilane situation detects and recognition system |
| CN103927883A (en) * | 2014-04-04 | 2014-07-16 | 中国科学院电工研究所 | Impedance imaging vehicle detection system and method based on piezoresistance materials |
| CN103927883B (en) * | 2014-04-04 | 2016-03-23 | 中国科学院电工研究所 | Based on electrical impedance imaging vehicle detecting system and the detection method of pressure drag material |
| CN104075832A (en) * | 2014-07-16 | 2014-10-01 | 重庆市华驰交通科技有限公司 | Sensor structure used for axle recognizer and axle recognizing method and system |
| CN106012894A (en) * | 2016-05-16 | 2016-10-12 | 天津纽威特橡胶制品股份有限公司 | Trampling and pressing device for plastic runway |
| CN111556689A (en) * | 2020-05-11 | 2020-08-18 | 郑州工程技术学院 | Road surface sensing circuit and protector thereof |
| CN111556689B (en) * | 2020-05-11 | 2021-06-04 | 郑州工程技术学院 | Road surface sensing circuit and protector thereof |
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