CN104075832A - Sensor structure used for axle recognizer and axle recognizing method and system - Google Patents
Sensor structure used for axle recognizer and axle recognizing method and system Download PDFInfo
- Publication number
- CN104075832A CN104075832A CN201410338824.XA CN201410338824A CN104075832A CN 104075832 A CN104075832 A CN 104075832A CN 201410338824 A CN201410338824 A CN 201410338824A CN 104075832 A CN104075832 A CN 104075832A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- pressure transducer
- axle
- pressure
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a sensor structure used for an axle recognizer. The sensor structure comprises N pressure sensors. The N pressure sensors are arranged in a linear array mode. The distance X between every two adjacent pressure sensors is smaller than Dmin-W and smaller than the W, and d is smaller than or equal to X/2, wherein the Dmin is the minimum dual-tire interval of a vehicle, the d is the diameter of the sensors, and the W is the effective landing width of the tires of the vehicle. Meanwhile, the invention further discloses an axle recognizing system and method with the sensor structure. The axle recognizing system comprises the sensor structure, N operational amplifiers, N comparators, a single chip microcomputer and a master control instrument, each pressure sensor is connected with one operational amplifier, each operational amplifier is connected with one comparator, each comparator is connected with an I/O interface of the single chip microcomputer, and the single chip microcomputer is connected with the master control instrument. According to the sensor structure and the axle recognizing system and method, either the number of the tires is one or two can be judged by judging whether signals generated by the sensors are continuous or not; the link that voltage signals are converted into digital signals through a traditional A/D conversion module is omitted, and the hardware cost of the A/D conversion module can be saved.
Description
Technical field
The present invention relates to a kind of metering method field, particularly a kind of sensor construction for axle identification, axle identification method and system.
Background technology
Along with the development of national economy and the acceleration of urbanization process, the ratio of the big-and-middle-sized goods stock in communications and transportation increases day by day, and the volume of traffic rises rapidly, and it is more and more general and serious that overload of vehicle, the phenomenon that transfinites also become.The 2nd command that Ministry of Communications 2000 promulgates " overload transport vehicle travel highway administration regulation " and national seven ministries and commissions combine " about the embodiment of carrying out the work of vehicle overload overload managing in the whole nation " (road of handing over to the collective or the state is sent out (2004) No. 219) of issue, regulation uses the economic and administrative means that combine to carry out necessary law enforcement processing to the overrun vehicle passing through, effectively to ensure the serviceable life of bridge and highway.Accurately detecting and obtain vehicular characteristics data as much as possible, is the key foundation in the field such as highway and bridge weight metering charging, overrun vehicle law enforcement, wherein the tyre type of the vehicle characteristic that is just absolutely necessary.
Wheel axle identifier claims again tire recognizer, reset together with standby and install and support the use with meter, mainly for detection of vehicle by time every arbor wheel tire number, and can identify the speed of a motor vehicle, wheel shaft, vehicle etc. by coupling system allomeric function.Wheel axle identifier equipment is accompanied by the implementation development of weight metering charging, and each producer, according to different technologies and the principle grasped, designs different products.
Wheel axle identifier is divided and is mainly contained switching mode and pressure sensing type from principle at present.In concrete structural design, the pressure transducer arrangement mode of the two generation voltage is basically identical, and every Wheel axle identifier is installed 9～16 modules, and intermodule is apart from being about 8～15cm.The judgement principle of single two-wheel is determined according to the position of all module output signals and quantity: when signal sum is less than or equal to certain number m (m desirable 2～5), and continuous module has pressure wheel out-of-date, is single-wheel; When signal sum is more than or equal to certain number n (n desirable 3～6), or middle discontinuous module more than k (k desirable 1～3) is individual has pressure wheel out-of-date, is two-wheel.This judgement principle needs to determine in advance m, n, k tri-numbers, due to all kinds vehicle tyre effectively land width and space between twin wheels different, m, n, k tri-values are difficult for choosing, and do not seek unity of standard, and cause the tire recognition correct rate deviation of each producer larger.
Summary of the invention
In view of this, the invention provides a kind of sensor construction for axle identification, a kind of new axle identification method and system be provided simultaneously, the method by determine sensor whether produce continuous variable signal determine be single tire or twins, simple and reliable.
One of object of the present invention is to realize by such technical scheme, a kind of sensor construction for Wheel axle identifier, this sensor construction comprises N pressure transducer, N linearly array way arrangement of pressure transducer, the distance X <D of adjacent two pressure transducers
min-W, X<W, d≤X/2, wherein D
minfor the minimum space between twin wheels of vehicle, d is the diameter of sensing mould, and W is the vehicle tyre width that effectively lands.
Two of object of the present invention is to realize by such technical scheme, and a kind of axle identification method, by the linearly array way arrangement of N pressure transducer, the distance X <D of adjacent two pressure transducers
min-W, wherein W is the vehicle tyre width that effectively lands, D
minfor the minimum space between twin wheels of vehicle, produce continuous variable signal in the time that pressure wheel is crossed each pressure transducer time, can be judged as single tire, if the discontinuous twins that is judged as of variable signal producing.
Further, the distance of described adjacent two pressure transducers is less than the vehicle tyre width that effectively lands.
Further, d≤X/2, the diameter that wherein d is sensor.
Three of object of the present invention is to realize by such technical scheme, a kind of wheel shaft identifying system, comprise N pressure transducer, a N operational amplifier, a N comparer, single-chip microcomputer and master control instrument, each pressure transducer is connected with an operational amplifier, each operational amplifier is connected with a comparer, each comparer is connected with the I/O mouth of monolithic, and described single-chip microcomputer is connected with master control instrument.
Further, a described N pressure transducer linearly array way is arranged, and adjacent two pressure transducers distance is to each other X<D
min-W, X<W, d≤X/2, wherein D
minfor the minimum space between twin wheels of vehicle, d is the diameter of sensing mould, and W is the vehicle tyre width that effectively lands.
Owing to having adopted technique scheme, the present invention has advantages of as follows:
1, according to above-mentioned pressure transducer spacing setting method, while producing continuous variable signal, can be judged as single tire in the time that pressure wheel is crossed each pressure transducer, if the discontinuous twins that is judged as of variable signal producing, the method is simple and reliable.
2, wheel shaft identifying system of the present invention has been abandoned the link that by traditional A/D modular converter, voltage signal is converted to digital signal, can save the hardware cost of A/D modular converter; The 2nd, by the comparison procedure of hardware comparator replacement scm software handling procedure, reduce the processing expenditure of processor of single chip computer.And each road voltage signal can automatically amplify separately, compare, and does not interfere with each other.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is that tire acts on Wheel axle identifier design sketch;
Fig. 2 is the theory diagram of wheel shaft identifying system;
Fig. 3 is pressure-type axle identification process flow diagram;
Fig. 4 is the coding form figure that twins acts on Wheel axle identifier;
Fig. 5 is the coding form figure that single tire acts on Wheel axle identifier.
Embodiment
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment is only for the present invention is described, instead of in order to limit the scope of the invention.
In the eurypalynous Wheel axle identifier of crowd, each pressure transducer spacing is determined very crucial, existing product is rule of thumb roughly set a numerical value conventionally, not rational basis, axle identification rate is uneven, the present invention has summed up a kind of new pressure transducer spacing and has determined method, can accurately identify vehicle tyre type.
If the diameter of pressure transducer is d, the center distance of adjacent pressure transducer is X, and the minimum space between twin wheels of vehicle is D
min, corresponding vehicle tire 1 width that effectively lands is W, the value of X need to meet two conditions:
1. Wheel axle identifier 3 is before design, and the center distance X value of each pressure transducer 2 is definite according to " truck tyre specification, size, air pressure and load " standard GB/T/T2977-2008 and installation section driving vehicle main Types, and X value should be so:
X<D
min-W formula (1)
Maximum size and the minimum space between twin wheels substitution formula (1) of using of different kinds of tyre that standard GB/T/T2977-2008 is provided, can calculate the adjacent dividing value of corresponding pressure transducer center distance, therefore, in practical application, in order effectively to identify all tire type, X value is less than the adjacent dividing value minimum value of pressure transducer center distance.
2. spacing x should be less than the vehicle tyre width W that effectively lands, that is:
X<W formula (2)
To ensure that vehicle tyre can fully effectively act on the pressure transducer of some.
On X value basis, pressure transducer diameter d should meet:
D≤X/2 formula (3)
In addition, length and the weighing platform of Wheel axle identifier adapt, and not only ensure that vehicle tyre acts on Wheel axle identifier completely, also need to coordinate weighing platform to calculate vehicle axle weight, gross weight.Under normal circumstances, common lane detection width 1700mm, super wide lane detection width 2100mm.
Synchronization, the array pressure sensor that vehicle tyre acts on Wheel axle identifier contacts effect as shown in Figure 1.
According to above-mentioned pressure transducer spacing setting method, produce continuous variable signal in the time that pressure wheel is crossed each pressure transducer time, can be judged as single tire, if the discontinuous twins that is judged as of variable signal producing.
This kind of axle identification judges that the method usable range of single two-wheel is not limited to switching mode and pressure sensing type, and pressure transducer is arranged linearly array way substantially can be general.
According to above-mentioned thought, the invention provides a kind of sensor construction for Wheel axle identifier, this sensor construction comprises N pressure transducer, N linearly array way arrangement of pressure transducer, the distance X <D of adjacent two pressure transducers
min-W, X<W, d≤X/2, wherein D
minfor the minimum space between twin wheels of vehicle, d is the diameter of sensing mould, and W is the vehicle tyre width that effectively lands.
Wheel axle identifier adopts pressure sensing type, and it is simple in structure, easy for installation, and practical application is more.The tire recognizer of this form is made up of parts such as elastic body resistance strain gage, lead-in wire and shells.In the time that vehicle presses, elastic body carrying gravity has the deformation being directly proportional to gravity, resistance strain gage sticks on elastic body, there is identical deformation with elastic body, variable thus has a resistance, under for bridge circuit effect, the output terminal on bridge road produces the voltage being directly proportional to gravity, thereby obtains electric signal.
Produce the ultimate principle of electric signal according to pressure transducer, cross the discernible digital signal encoding of multiple sensors as object to obtain pressure wheel, and in order to overcome existing pressure sensing type Wheel axle identifier circuit complexity, oneself power consumption is large, between road, disturb large, the shortcoming that cost is high, the pressure sensing voltage signal of native system has adopted the hardware handles pattern of " Lu-Lu amplifies; Lu-Lu comparison ", the one, abandon the link that by traditional A/D modular converter, voltage signal is converted to digital signal, can save the hardware cost of A/D modular converter; The 2nd, by the comparison procedure of hardware comparator replacement scm software handling procedure, reduce the processing expenditure of processor of single chip computer.And each road voltage signal can automatically amplify separately, compare, and does not interfere with each other.
Native system structural design as shown in Figure 2.
Because the initial voltage signal that pressure transducer produces is quite faint, so sensor signal must be through after the larger operational amplifier of enlargement factor, then send into comparer corresponding to each road.Comparer is responsible for the voltage signal of operational amplifier output to compare with reference voltage signal, if amplifier signal is greater than reference voltage signal, exports high state, is less than reference voltage signal and exports low state.Processor of single chip computer is responsible for scanning the Transistor-Transistor Logic level signal of each road comparer output, and by internal processes processing, Jiang Ge road pressure transducer state is exported to master control instrument by serial ports after encoding.The comparer output of every road is joined with the each IO mouth of single-chip microcomputer respectively.Whole flow process as shown in Figure 3.
Speed when single-chip microcomputer sweep frequency was mainly pressed sensor according to vehicle is determined, be that 10m/s is as example calculating taking car speed 36km/h, if wheel effective pressure contact sensor diameter is 30mm, start pressure sensor to leaving sensor from wheel, the actual 200mm that is about of arc length of wheel contact, the time that therefore pressure wheel is crossed sensor is about 20ms.From mechanics, the stressed of sensor is para-curve, in program, decaptitate truncate after for the effective stressed time, be approximately during this period of time the half of 20ms, namely 10ms judge accurately and have or not wheel to be pressed onto sensor in 10ms, require the sweep velocity of single-chip microcomputer to be no less than 100Hz, in reality, the speed of a motor vehicle is uncertain, adds the requirement to reliability, and actual scanning speed is risen to 1000Hz.
Single-chip microcomputer scanning encoding can be reached an agreement on according to the actual requirements, if being high state, voltage represents that tire acts on pressure transducer, voltage is that low state represents that tire does not act on pressure transducer, now scanning encoding the simplest form conventionally: be high state when scanning input port voltage, single-chip microcomputer control program represents with " 1 ", scanning input port voltage is low state, and single-chip microcomputer control program represents with " 0 ".In conjunction with above-mentioned axle identification method, in the time of vehicle wheel tire pressure third wheel axle recognizer, the scanning encoding of continuous passage there will be as Fig. 4, shown in 5, can judge thus vehicle tyre type.Fig. 4 is the coding form figure that twins acts on Wheel axle identifier; Fig. 5 is the coding form figure that single tire acts on Wheel axle identifier.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (6)
1. for a sensor construction for Wheel axle identifier, it is characterized in that: this sensor construction comprises N pressure transducer N linearly array way arrangement of pressure transducer, the distance X <D of adjacent two pressure transducers
min-W, X<W, d≤X/2, wherein D
minfor the minimum space between twin wheels of vehicle, d is the diameter of sensing mould, and W is the vehicle tyre width that effectively lands.
2. an axle identification method, is characterized in that: by the linearly array way arrangement of N pressure transducer, the distance X <D of adjacent two pressure transducers
min-W, wherein W is the vehicle tyre width that effectively lands, D
minthe minimum space between twin wheels of vehicle, while producing continuous variable signal, can be judged as single tire in the time that pressure wheel is crossed each pressure transducer, if the discontinuous twins that is judged as of variable signal producing.
3. arbor wheel recognition methods according to claim 1, is characterized in that: the distance of described adjacent two pressure transducers is less than the vehicle tyre width that effectively lands.
4. according to the arbor wheel recognition methods described in claim 2 or 3, it is characterized in that: d≤X/2, the diameter that wherein d is sensor.
5. a wheel shaft identifying system, it is characterized in that: comprise N pressure transducer, a N operational amplifier, a N comparer, single-chip microcomputer and master control instrument, each pressure transducer is connected with an operational amplifier, each operational amplifier is connected with a comparer, each comparer is connected with the I/O mouth of monolithic, and described single-chip microcomputer is connected with master control instrument.
6. wheel shaft identifying system according to claim 5, is characterized in that: a described N pressure transducer linearly array way is arranged, and adjacent two pressure transducers distance is to each other X<D
min-W, X<W, d≤X/2, wherein D
minfor the minimum space between twin wheels of vehicle, d is the diameter of sensing mould, and W is the vehicle tyre width that effectively lands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338824.XA CN104075832B (en) | 2014-07-16 | 2014-07-16 | A kind of sensor construction for Wheel axle identifier, axle identification method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338824.XA CN104075832B (en) | 2014-07-16 | 2014-07-16 | A kind of sensor construction for Wheel axle identifier, axle identification method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104075832A true CN104075832A (en) | 2014-10-01 |
| CN104075832B CN104075832B (en) | 2016-02-03 |
Family
ID=51597257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410338824.XA Active CN104075832B (en) | 2014-07-16 | 2014-07-16 | A kind of sensor construction for Wheel axle identifier, axle identification method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104075832B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330140A (en) * | 2014-11-07 | 2015-02-04 | 辽宁因泰立电子信息有限公司 | Method and device for identifying vehicle axle |
| CN109597963A (en) * | 2018-12-30 | 2019-04-09 | 郑州衡量科技股份有限公司 | A kind of axle identification method of number Wheel axle identifier |
| CN110907200A (en) * | 2019-12-10 | 2020-03-24 | 重庆唯英科技有限公司 | Single-tire and double-tire recognition system for automobile |
| CN113507494A (en) * | 2021-05-26 | 2021-10-15 | 杭州金毅科技有限公司 | Method and system for source treatment and super-collection |
| CN115900904A (en) * | 2022-12-27 | 2023-04-04 | 南京力加传感技术有限公司 | Vehicle overload and overrun detection method based on quartz piezoelectric wheel axle identification |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142408A (en) * | 1976-03-29 | 1979-03-06 | Abg-Semca S.A. | Apparatus for measuring axial thrust of a rotating machine shaft |
| JPS57186133A (en) * | 1981-05-12 | 1982-11-16 | Mitsubishi Heavy Ind Ltd | Method and device for measuring fluid pressure of rotating shaft |
| CN201181218Y (en) * | 2008-03-17 | 2009-01-14 | 华南理工大学 | Linear array pressure-sensitive sensing equipment used for automobile wheel shaft recognition |
| CN202090301U (en) * | 2011-04-28 | 2011-12-28 | 华南理工大学 | Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification |
| CN204085749U (en) * | 2014-07-16 | 2015-01-07 | 重庆市华驰交通科技有限公司 | A kind of sensor construction for Wheel axle identifier, wheel shaft identifying system |
-
2014
- 2014-07-16 CN CN201410338824.XA patent/CN104075832B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142408A (en) * | 1976-03-29 | 1979-03-06 | Abg-Semca S.A. | Apparatus for measuring axial thrust of a rotating machine shaft |
| JPS57186133A (en) * | 1981-05-12 | 1982-11-16 | Mitsubishi Heavy Ind Ltd | Method and device for measuring fluid pressure of rotating shaft |
| CN201181218Y (en) * | 2008-03-17 | 2009-01-14 | 华南理工大学 | Linear array pressure-sensitive sensing equipment used for automobile wheel shaft recognition |
| CN202090301U (en) * | 2011-04-28 | 2011-12-28 | 华南理工大学 | Integral dot-matrix type pressure sensitive sensor device for motor vehicle axle identification |
| CN204085749U (en) * | 2014-07-16 | 2015-01-07 | 重庆市华驰交通科技有限公司 | A kind of sensor construction for Wheel axle identifier, wheel shaft identifying system |
Non-Patent Citations (1)
| Title |
|---|
| 张东生等: "基于光纤光栅传感的公路轮轴识别系统", 《仪表技术与传感器》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330140A (en) * | 2014-11-07 | 2015-02-04 | 辽宁因泰立电子信息有限公司 | Method and device for identifying vehicle axle |
| CN109597963A (en) * | 2018-12-30 | 2019-04-09 | 郑州衡量科技股份有限公司 | A kind of axle identification method of number Wheel axle identifier |
| CN109597963B (en) * | 2018-12-30 | 2023-06-23 | 郑州衡量科技股份有限公司 | Axle identification method of digital axle identifier |
| CN110907200A (en) * | 2019-12-10 | 2020-03-24 | 重庆唯英科技有限公司 | Single-tire and double-tire recognition system for automobile |
| CN113507494A (en) * | 2021-05-26 | 2021-10-15 | 杭州金毅科技有限公司 | Method and system for source treatment and super-collection |
| CN115900904A (en) * | 2022-12-27 | 2023-04-04 | 南京力加传感技术有限公司 | Vehicle overload and overrun detection method based on quartz piezoelectric wheel axle identification |
| CN115900904B (en) * | 2022-12-27 | 2023-10-10 | 南京力加传感技术有限公司 | Vehicle overload overrun detection method based on quartz piezoelectric wheel shaft identification |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104075832B (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104075832B (en) | A kind of sensor construction for Wheel axle identifier, axle identification method and system | |
| CN106768633B (en) | A kind of multiple-axle vehicle quality and centroid position dynamic measurement device and measurement method | |
| CN104210445B (en) | A kind of heavy wrecker truck ramp operation safety monitoring system | |
| CN205664920U (en) | Modular whole car weighing apparatus weighing system | |
| CN104006870A (en) | Concurrent dynamic scale and weighing method thereof | |
| CN102226711B (en) | Dynamic weighing method of vehicle and apparatus thereof | |
| CN204085664U (en) | Array quartz type dynamic weighing system | |
| CN203848918U (en) | Vehicle dynamic weighing apparatus | |
| CN204924419U (en) | Array piezoelectric membrane developments weighing system | |
| CN204085749U (en) | A kind of sensor construction for Wheel axle identifier, wheel shaft identifying system | |
| CN201974223U (en) | Three-bending-plate weighing device | |
| CN203464988U (en) | Dynamic vehicle weighing and speed detection device | |
| CN207423338U (en) | Vehicle dynamic weighing system | |
| CN204165637U (en) | A kind of vehicle axles recognition device | |
| CN102288270B (en) | Dynamic car passing-through platform of single-end embedded axle metering equipment | |
| CN201203466Y (en) | Intelligent non-pit weighing system without breaking rail | |
| CN203561417U (en) | Four-weighing-platform road vehicle weighing system applicable to coupling type vehicles | |
| CN204831514U (en) | Main and secondary formula axle group vehicle weighing device | |
| CN203116829U (en) | Dynamic vehicle weighing device | |
| CN109597963B (en) | Axle identification method of digital axle identifier | |
| CN103528654B (en) | Be applicable to two weighing platform road vehicle weighing systems of shaft coupling type vehicle | |
| CN203798433U (en) | Concurrent dynamic scale | |
| CN202041264U (en) | Dynamic weighing device for vehicle | |
| CN207528321U (en) | It is a kind of can continuous dynamic weighing express highway intelligent vehicle weighing system | |
| CN202693095U (en) | Weighting system for realizing continuous weighting without vehicle stop based on static motor truck scale |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |