CN104422501B - A kind of weighing system and method for work for being suitable to type of vehicle differentiation - Google Patents
A kind of weighing system and method for work for being suitable to type of vehicle differentiation Download PDFInfo
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- CN104422501B CN104422501B CN201310369436.3A CN201310369436A CN104422501B CN 104422501 B CN104422501 B CN 104422501B CN 201310369436 A CN201310369436 A CN 201310369436A CN 104422501 B CN104422501 B CN 104422501B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/005—Means for preventing overload
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
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Abstract
The present invention relates to a kind of weighing system and method for work for being suitable to type of vehicle differentiation, including：Low-pass digital filter is carried out using Caesar's window low pass filter to digital weighing-up wave first, cut-off frequency is set as 10Hz；Then to low-pass filtering after 0 10HZ in the range of digital weighing signal enter line slip mean filter, wherein, the minimum frequency and maximum amplitude of setting slip mean filter, it is pointed in the minimum frequency and the digital weighing signal of no more than maximum amplitude enters line slip mean filter, obtains weight data.The present invention's enters line slip mean filter after Caesar's window low pass filter is to the filtering of digital weighing-up wave again, overcomes the vehicle that weighs and does not stop working, the weighting error that electromotor shake causes.
Description
Technical field
The present invention relates to a kind of weighing system and method for work, more particularly to a kind of it be suitable to weighing for type of vehicle differentiation and be
System and method of work.
Background technology
Overload of vehicle is to cause highway to accelerate the major reason damaged, traditional the overall of a weighing system mostly automobile to claim
Weight, is unable to judge type of vehicle, and determines whether whether the vehicle overloads.And for production unit, send
Lorry can cross title when unloaded, after title when waiting fully loaded, you can the goods weight for weighing up, but whether vehicle overloads,
Existing weighing system is difficult to judge.
103196530 A of Chinese patent literature CN discloses a kind of vehicle dynamic weighing system and its Weighing method, its
In, gather tire identification signal to judge type of vehicle by tire recognizer.The technical scheme is recognized due to by tire
Measurement type, for lorry, tire is it is possible that inconsistent situation in front and back, so tire can be caused for the technical scheme
Evaluator cannot accurately differentiate type of vehicle, cause measurement error.
The content of the invention
The primary technical problem for solving of the invention is to provide a kind of weighing system for being suitable to type of vehicle differentiation and work side
Method, the weighing system first have to the technical problem for solving while weighing to vehicle, and the type of the vehicle is examined
Survey, can determine whether whether the vehicle overloads, and be particularly suitable for situation about weighing in many lorry queuing loadings, overcome
Conventional weighing system must take into the technical problem of vehicle sequencing when crossing title, improve efficiency of weighing.
In order to solve above-mentioned technical problem, the invention provides a kind of method of work of weighing system, including：
A, low-pass digital filter is carried out using Caesar's window low pass filter to digital weighing-up wave, cut-off frequency is set as
10Hz；
B, line slip mean filter is entered to the digital weighing signal in the range of the 0-10HZ after low-pass filtering, wherein, setting
The minimum frequency and maximum amplitude of slip mean filter, that is, be pointed in the minimum frequency and the numeral of no more than maximum amplitude claims
Weight signal enters line slip mean filter, to obtain weight data.
Further, in order to realize being identified type of vehicle, judge whether the vehicles drive goods overloads, it is described to weigh
System includes：
Type of vehicle detection means, the type of vehicle detection means are installed on the center of the weighing area of weighting platform；
The type of vehicle detection means includes：
Magnetic bias generating meanss, the bias magnetic field stable for producing a spatial distribution, and the magnetic line of force of the bias magnetic field
The loop direction of circling of composition travels consistent to the direction of the weighing area with vehicle to be weighed, and covers the weighing area
Upper space；
Magnetic perception component, is positioned in the bias magnetic field, and reception vehicle to be weighed is produced into the bias magnetic field
Raw magnetic disturbance signal；
Memory element, be stored with type of vehicle feature database, and the type of vehicle feature database includes the specified load of type of vehicle, vehicle
Weight；
The method for obtaining the type of vehicle feature database is：When all types of vehicles respectively enter the bias magnetic field, institute
State magnetic perception component and receive the magnetic disturbance signal that the vehicle is produced；Each magnetic disturbance signal is converted into into the type with the vehicle
Corresponding impulse waveform, the amplitude of the impulse waveform are determined by the amplitude average value of the magnetic disturbance signal；It is thus obtained
The each impulse waveform corresponding with the type of the vehicle, that is, constitute the type of vehicle feature database；
Processor module, is connected with the memory element, is suitable to process the magnetic disturbance signal that the magnetic perception component is received；
That is, described processor module is converted to pulse signal corresponding with the vehicle of weighing, its pulse amplitude the magnetic disturbance signal
For the amplitude average value of the magnetic disturbance signal；
The pulse signal is contrasted by the processor module with the pulse amplitude in the type of vehicle feature database, i.e.,
The type of the vehicle of weighing can be obtained；
The method of work of the weighing system also includes：
1., after unloaded all types of goods carrying vehicles sail the weighing area into one by one, the weighing system is to Current vehicle
The unloaded car weight data of acquisition of weighing are carried out, while the type of Current vehicle is obtained by the type of vehicle detection means, i.e. institute
The type that processor module judges Current vehicle according to the magnetic disturbance signal that the magnetic perception component is obtained is stated, and it is current according to this
The type of vehicle obtains the payload ratings of the vehicle, and the type the Current vehicle, payload ratings, unloaded car weight data are sent out
Deliver in the memory module in the weighing cell in the weighing system；
2., after sailing the weighing area one by one into again after each goods carrying vehicle is loaded, the weighing system is again to current
Vehicle carries out acquisition fully loaded car weight data of weighing, while being obtained according to the magnetic perception component by the type of vehicle detection means
Magnetic disturbance signal judge the type of Current vehicle again, the weighing system calls the logical of storage according to the type of Current vehicle
Cross step and 1. store the payload ratings of the vehicle in a storage module, unloaded car weight data；By unloaded car weight data with work as
Front fully loaded car weight data are compared, and obtain goods weight, and judge that current goods carrying vehicle is by the payload ratings data
No overload.
Further, in order to send the bias magnetic field of stable, wide coverage, the magnetic bias generating meanss include：Permanent magnetism
Body, first, second magnetic conductor, the two poles of the earth of the permanent magnet are contacted with one end of first, second magnetic conductor respectively, and it is described forever
Magnet and first, second magnetic conductor constitute L-shaped；The other end of the first or second magnetic conductor is adjacent with the magnetic perception component
Arrange, and the permanent magnet, first and second magnetic conductor, magnetic perception component constitute a concave shape；Wherein, the bias magnetic field is suitable to
Send from the end of first magnetic conductor, and the length direction along the second magnetic conductor passes through the magnetic perception component, that is, constitute
The bypass loop of the magnetic line of force；The air for being suitable to adjust magnetic field intensity is left between the magnetic perception component and the second magnetic conductor
Magnetic gap.
Further, in order to realize receiving magnetic disturbance signal from all directions, the magnetic perception component includes：Three pairs in horn-like
The magnetic for being suitable to converge magnetic signal converge body, the three pairs of magnetic converge the horn mouth of bodies and arrange outwardly and be respectively at a square
Six end faces on, the three pairs of magnetic to be converged and constitute a cavity between the medial extremity of bodies, are provided with and the processor die in the cavity
The three-D magnetic field sensor that block is connected；The setting X-axis of three-D magnetic field sensor, Y-axis, Z axis respectively with first, second, third pair
The central axis that magnetic converges body is consistent；
The type of vehicle detection means is suitable to when vehicle of weighing is into the bias magnetic field, the three-D magnetic field sensor
X-axis be adapted to detect for the magnetic disturbance signal that the vehicle of weighing is produced in the front or rear direction of the magnetic perception component；Described three
The Y-axis of dimension magnetic field sensor is adapted to detect for the magnetic disturbance that the vehicle of weighing is produced in the left or right direction of the magnetic perception component
Signal；The Z axis of the three-D magnetic field sensor weigh what vehicle was produced in the top of the magnetic perception component described in being adapted to detect for
Magnetic disturbance signal.
In order to solve above-mentioned technical problem, present invention also offers a kind of weighing system for being suitable to type of vehicle differentiation, bag
Include：
Type of vehicle detection means, the type of vehicle detection means are installed on the center of the weighing area of weighting platform；
The type of vehicle detection means includes：
Magnetic bias generating meanss, the bias magnetic field stable for producing a spatial distribution, and the magnetic line of force of the bias magnetic field
The loop direction of circling of composition travels consistent to the direction of the weighing area with vehicle to be weighed, and covers the weighing area
Upper space；
Magnetic perception component, is positioned in the bias magnetic field, and reception vehicle to be weighed is produced into the bias magnetic field
Raw magnetic disturbance signal；
Memory element, be stored with type of vehicle feature database, and the type of vehicle feature database includes the specified load of type of vehicle, vehicle
Weight；
The method for obtaining the type of vehicle feature database is：When all types of vehicles respectively enter the bias magnetic field, institute
State magnetic perception component and receive the magnetic disturbance signal that the vehicle is produced；Each magnetic disturbance signal is converted into into the type with the vehicle
Corresponding impulse waveform, the amplitude of the impulse waveform are determined by the amplitude average value of the magnetic disturbance signal；It is thus obtained
The each impulse waveform corresponding with the type of the vehicle, that is, constitute the type of vehicle feature database；
Processor module, is connected with the memory element, is suitable to process the magnetic disturbance signal that the magnetic perception component is received；
That is, described processor module is converted to pulse signal corresponding with the vehicle of weighing, its pulse amplitude the magnetic disturbance signal
For the amplitude average value of the magnetic disturbance signal；
The pulse signal is contrasted by the processor module with the pulse amplitude in the type of vehicle feature database, i.e.,
The type of the vehicle of weighing can be obtained.
Further, in order to send the bias magnetic field of stable, wide coverage, the magnetic bias generating meanss include：Permanent magnetism
Body, first, second magnetic conductor, the two poles of the earth of the permanent magnet are contacted with one end of first, second magnetic conductor respectively, and it is described forever
Magnet and first, second magnetic conductor constitute L-shaped；
The other end of the first or second magnetic conductor is disposed adjacent with the magnetic perception component, and the permanent magnet, and first and second
Magnetic conductor, magnetic perception component constitute a concave shape；
Wherein, the bias magnetic field is suitable to from the end of first magnetic conductor send, and along the length of the second magnetic conductor
Direction passes through the magnetic perception component, that is, constitute the bypass loop of the magnetic line of force；
The air magnetic gap for being suitable to adjust magnetic field intensity is left between the magnetic perception component and the second magnetic conductor.
Further, in order to realize receiving magnetic disturbance signal from all directions, the magnetic perception component includes：Three pairs in horn-like
The magnetic for being suitable to converge magnetic signal converge body, the three pairs of magnetic converge the horn mouth of bodies and arrange outwardly and be respectively at a square
Six end faces on, the three pairs of magnetic to be converged and constitute a cavity between the medial extremity of bodies, are provided with and the processor die in the cavity
The three-D magnetic field sensor that block is connected；The setting X-axis of three-D magnetic field sensor, Y-axis, Z axis respectively with first, second, third pair
The central axis that magnetic converges body is consistent；
The type of vehicle detection means is suitable to when vehicle of weighing is into the bias magnetic field, the three-D magnetic field sensor
X-axis be adapted to detect for the magnetic disturbance signal that the vehicle of weighing is produced in the front or rear direction of the magnetic perception component；Described three
The Y-axis of dimension magnetic field sensor is adapted to detect for the magnetic disturbance that the vehicle of weighing is produced in the left or right direction of the magnetic perception component
Signal；The Z axis of the three-D magnetic field sensor weigh what vehicle was produced in the top of the magnetic perception component described in being adapted to detect for
Magnetic disturbance signal.
Compared with prior art, the invention has the advantages that：（1）The present invention by Caesar's window low pass filter logarithm
Enter line slip mean filter again after the filtering of word weighing-up wave, overcome the vehicle that weighs and do not stop working, what electromotor shake caused weighs
Error；（2）The detection of type of vehicle is realized by type of vehicle detection means, the lifting capacity of the vehicle that weighs is obtained, it is to avoid
Overload of vehicle, can be widely applied to the places such as high speed charge station, goods yard；（3）Group is known by magnetic bias generating meanss and magnetic strength
The cooperating of part, it is stable with vehicle disturbed magnetic field, and the field signal it is strong the characteristics of；（4）By vehicle type recognition, keep away
The weighing system of prior art is exempted from when many lorry queuing loadings are weighed, it is necessary to when considering that lorry is unloaded, weigh suitable
Sequence, or only one lorry weighs from zero load, then the technical problem weighed to after loading, by vehicle type recognition, to zero load
The vehicle that weighs is confirmed, after vehicle loading, carries out vehicle identification again, need not be considered the order of weighing of vehicle, especially be fitted
Freighted in various types of vehicle, improve efficiency of weighing.
Description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment and combine accompanying drawing,
The present invention is further detailed explanation, wherein
The frequency response curve of Caesar's window low pass filter of Fig. 1 present invention；
The weighing-up wave waveform that Fig. 2 is processed without the method for work of the weighing system of the present invention；
The weighing-up wave waveform that the method for work of the weighing system of Fig. 3 Jing present invention is processed；
The position view of type of vehicle detection means in the weighing system of Fig. 4 present invention；
The dimensional structure diagram of the magnetic bias generating meanss and magnetic perception component of Fig. 5 present invention；
The structural representation of the magnetic bias generating meanss and magnetic perception component of Fig. 6 present invention；
A kind of circuit structure block diagram of the embodiment of the type of vehicle detection means of Fig. 7 present invention；
The circuit structure block diagram of the another embodiment of the type of vehicle detection means of Fig. 8 present invention；
The magnetic of Fig. 9 present invention converges the dimensional structure diagram of body；
The structural representation of the magnetic perception component of Figure 10 present invention.
Wherein, permanent magnet 1, the first magnetic conductor 2, the second magnetic conductor 3, magnetic perception component 4, bias magnetic field 5, air magnetic gap 6,
Magnetic converges body 7, cavity 8, weighting platform 9, weighing area 9-1, type of vehicle detection means 10.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail：
Embodiment 1
A kind of method of work of weighing system, including:
A, low-pass digital filter is carried out using Caesar's window low pass filter to digital weighing-up wave, cut-off frequency is set as
10Hz；
B, line slip mean filter is entered to the digital weighing signal in the range of the 0-10HZ after low-pass filtering, wherein, setting
The minimum frequency and maximum amplitude of slip mean filter, that is, be pointed in the minimum frequency and the numeral of no more than maximum amplitude claims
Weight signal enters line slip mean filter, to obtain weight data.
Wherein, the minimum frequency takes 0.5HZ（2 seconds）, amplitude peak is the two of the weight scale division value of weighing system setting
Times.
Caesar's window low pass filter, setting sample frequency are 50Hz, and cut-off frequency is 10Hz, and exponent number is 16 ranks, such as
Shown in Fig. 1, as can be seen from Figure 2 less than 10hz, the wave filter is not waned cut signal substantially, is decayed more than 10hz especially big,
20hz decays to -60db later.
Fig. 2 and Fig. 3 contrasts, it can be found that the actual test not processed through the method for work of the invention is weighed
Data waveform, which has fluctuation in whole weighing process.Just disappeared through the vibration of the method for work latter half of the present invention
Remove.Therefore provide certainty of measurement.
See Fig. 4, the weighing system includes：
Type of vehicle detection means 10, the type of vehicle detection means 10 are installed on the weighing area 9-1 of weighting platform 9（See Fig. 4
Middle dotted line represents region）Center；
See Fig. 5, Fig. 6 and Fig. 7, the type of vehicle detection means 10 includes：
Magnetic bias generating meanss, the bias magnetic field 5 stable for producing a spatial distribution, and the magnetic force of the bias magnetic field 5
The loop direction of circling that line is constituted（In Fig. 4, A arrows represent direction）Travel with vehicle to be weighed to the side of the weighing area 9-1
To（In Fig. 4, B arrows represent direction）Unanimously, and the upper space of the weighing area 9-1 is covered, if magnetic field intensity is big, can be with
Accomplish to be completely covered, if magnetic field intensity is little, although can not be completely covered, but can also reach detection and require.Magnetic biasing is referred to specifically
Put the structure and operation principle of generating meanss.
Magnetic perception component 4, is positioned in the bias magnetic field 5, and receives vehicle to be weighed into 5 institute of the bias magnetic field
The magnetic disturbance signal of generation.
Memory element, be stored with type of vehicle feature database, and the type of vehicle feature database includes the specified load of type of vehicle, vehicle
Weight.
The type of vehicle feature database is priori, and needs were obtained before using the type of vehicle detection means 10
.Wherein, the method for the acquisition type of vehicle feature database is：When all types of vehicles sail the bias magnetic field 5 into respectively, institute
State magnetic perception component 4 and receive the magnetic disturbance signal that the vehicle is produced；Each magnetic disturbance signal is converted into into the class with the vehicle
The corresponding impulse waveform of type, the amplitude of the impulse waveform are determined by the amplitude average value of the magnetic disturbance signal；It is derived from
The each impulse waveform corresponding with the type of the vehicle, that is, constitute the type of vehicle feature database；
Processor module, is connected with the memory element, is suitable to process the magnetic disturbance letter that the magnetic perception component 4 is received
Number；That is, described processor module is converted to pulse signal corresponding with the vehicle of weighing, its pulse width the magnetic disturbance signal
Spend the amplitude average value for the magnetic disturbance signal；The processor module is by the pulse signal and the type of vehicle feature database
In pulse amplitude contrast, you can obtain the type of the vehicle of weighing.
The method of work of the weighing system also includes：
1., after unloaded all types of goods carrying vehicles sail the weighing area 9-1 one by one into, the weighing system is to current
Vehicle carries out the unloaded car weight data of acquisition of weighing, while the class of Current vehicle is obtained by the type of vehicle detection means 10
Type, i.e. the processor module judges the type of Current vehicle according to the magnetic disturbance signal that the magnetic perception component 4 is obtained, and
The payload ratings of the vehicle, and the type the Current vehicle, payload ratings, zero load are obtained according to the type of the Current vehicle
In the memory module in weighing cell in car weight data is activation to the weighing system；
2., after sailing the weighing area 9-1 again one by one into after each goods carrying vehicle is loaded, the weighing system is right again
Current vehicle carries out acquisition fully loaded car weight data of weighing, while knowing group according to the magnetic strength by the type of vehicle detection means 10
The magnetic disturbance signal that part 4 is obtained judges the type of Current vehicle again, and the weighing system is called according to the type of Current vehicle
1. storage stores the payload ratings of the vehicle in a storage module, unloaded car weight data by step；By unloaded car weight
Data are compared with current fully loaded car weight data, are obtained goods weight, and are judged to work as front bearing by the payload ratings data
Whether lorry overloads.
Wherein, the magnetic bias generating meanss can use the permanent magnet of different shape, different materials, different qualities to constitute,
But its essence is that the stable bias magnetic field 5 of a spatial distribution is produced on weighting platform weighing area；Magnetic perception component 4, Ke Yijie
The magnetic field for coming is received from all directions radiation, a convergence magnetic field is obtained；Magnetic disturbance signal, which is that a ferromagnetic material enters magnetic field
In, the complementary field produced by after being magnetized；Matter of the magnetic induction intensity of the complementary field according to the ferromagnetic material
Amount, structure it is different and different, i.e. when automobile enters the bias magnetic field 5, as the main material of vehicle is iron and steel, vehicle
Magnetic disturbance will be produced in the bias magnetic field；The knot of the parts such as the length of vehicle, width, the number of axle, electromotor and gearbox-type
The difference of structure and layout so that magnetic disturbance signal amplitude that different vehicle is formed, length, Wave crest and wave trough wide high signal it is special
Levy different.It is determined that bias magnetic field 5 under, the magnetic signal feature of same type vehicle is basically identical, and this is this vehicle class
The physical basis detected by type detection means.
In the type of vehicle detection means, type of vehicle feature database is set up particularly critical.So can also be using such as
Lower two methods are setting up type of vehicle feature database, and carry out the detection and the work tested the speed of type of vehicle.
Method one, the method for obtaining the type of vehicle feature database can also receive title by magnetic perception component 4
Produced magnetic disturbance signal when bias magnetic field 5 of loaded vehicle, and with after processor resume module, extract magnetic disturbance signal pair
Answer time domain, frequency domain feature to determine respective type vehicle.
When vehicle detection is carried out, it is also possible to signal is produced when extraction weighs vehicle above magnetic bias generating meanss
The feature of time domain, frequency domain, and compare with the time domain of signal, frequency domain character in the method acquisition type of vehicle feature database,
To obtain the type of vehicle of weighing.
Method two, the accuracy in order to further improve type of vehicle feature database, the method for setting up type of vehicle feature database
Including：
When all types of vehicles respectively enter the bias magnetic field 5, the magnetic perception component 4 receives what the vehicle was produced
Magnetic disturbance signal；After by each magnetic disturbance signal digitized, the characteristic related to these vehicles, including magnetic perturbation are therefrom extracted
The pulse amplitude average characteristics of dynamic signal, extremal features and spatial-temporal distribution characteristic, it is categorized sum up after in the form of eigenmatrix
It is stored in memory element, the described type of vehicle feature database of composition, i.e. the eigenmatrix for obtaining the magnetic disturbance sample is constituted
Type of vehicle feature database；
If being preserved in the form of eigenmatrix in the type of vehicle feature database, the processor module is by the magnetic
The eigenmatrix of disturbance sample is contrasted with the eigenmatrix in the type of vehicle feature database, you can obtain the vehicle of weighing
Type.
See Fig. 6, in order to improve the directivity of bias magnetic field 5, stability, intensity, the magnetic bias generating meanss include：Forever
Magnet 1, first, second magnetic conductor, the two poles of the earth of the permanent magnet 1 are contacted with one end of first, second magnetic conductor respectively, and institute
State permanent magnet 1 and first, second magnetic conductor constitutes L-shaped；The other end of the first or second magnetic conductor and the magnetic perception component
4 are disposed adjacent, and the permanent magnet 1, first, second magnetic conductor, and magnetic perception component 4 constitutes a concave shape；Wherein, the biasing
Magnetic field 5 is suitable to from the end of first magnetic conductor 2 send, and the length direction along the second magnetic conductor 3 is known through the magnetic strength
Component 4, that is, constitute the bypass loop of the magnetic line of force；Leave between the magnetic perception component 4 and the second magnetic conductor 3 and be suitable to adjust
The air magnetic gap 6 of magnetic field intensity.
Wherein, magnetic bias magnetic field 5 is by Nd-Fe-B permanent magnet 1 and magnetic flux guide body（Magnetic conductor）Composition, magnetic flux guide body with
High permeability materials make, with higher saturation flux BSAnd relatively low magnetic resistance σ, one point can be produced around sensing point
The stable non-uniform stable magnetic field of cloth.As magnetic induction of the magnetic field in effective search coverage is far above earth's magnetic field, the magnetic
Field characteristic is unrelated with sensing point latitude and direction of traffic, is difficult to obtain by latitude and azimuthal influence so as to break away from earth magnetism detection method
The shortcoming of detecting parameter that must be unified, and to provide primary condition based on the detection of signal structure characteristic and frequency characteristic.Should
Distribution of Magnetic Field and field intensity can according to detection it needs to be determined that, to obtain optimal detection effect.The air magnetic gap 6 is adjusted
Size is adjusting magnetic field intensity.
See Fig. 6, Fig. 9, Figure 10, the magnetic perception component 4 includes：Three pairs are converged in the trumpet-shaped magnetic for being suitable to converge magnetic signal
Aggressiveness 7, the horn mouth that three pairs of magnetic converge body 7 are arranged outwardly and are respectively on six end faces of a square, three couple
A cavity 8 is constituted between the medial extremity of magnetic convergence body 7, the three-dimensional magnetic field being connected with the processor module is provided with the cavity 8
Sensor；The X-axis of setting three-D magnetic field sensor, Y-axis, Z axis converge the central shaft of body 7 respectively with first, second, third pair of magnetic
Line is consistent；Wherein, magnetic convergence body 7 can also trapezoidal important actor shape.
The type of vehicle detection means 10 is adapted to be mounted to the center of weighing area 9-1, when vehicle to be weighed is sailed
After entering the bias magnetic field 5, then the X-axis of the three-D magnetic field sensor is adapted to detect for the vehicle to be weighed and knows in the magnetic strength
The magnetic disturbance signal that the front or rear direction of component 4 produces；The Y-axis of the three-D magnetic field sensor is adapted to detect for the vehicle of weighing
In the magnetic disturbance signal that the left or right direction of the magnetic perception component 4 produces；The Z axis of the three-D magnetic field sensor are adapted to detect for
The magnetic disturbance signal that the vehicle to be weighed is produced in the top of the magnetic perception component 4；That is, before and after the magnetic perception component 4
Direction is that first pair of magnetic converges body, and left and right directions is that second pair of magnetic converges body, and above-below direction is that the 3rd pair of magnetic converges body, while
The X, Y, Z axis that as needed, can adjust the three-D magnetic field sensor converges the corresponding of body with first, second, third pair of magnetic
Relation, detection method are the same.
When realizing that above-mentioned type of vehicle is detected, described magnetic disturbance signal is X-axis, Y-axis, the magnetic disturbance in three directions of Z axis
The summation of signal（Collect）.
See Fig. 8, for the stringent environmental requirements of field monitoring of weighing, signal condition part adopts low drifting low noise amplifier
Design, realizes temperature-compensating with reference to field temperature sensor；The type of vehicle detection means also includes：With the processor die
What block was connected one is suitable to gather the temperature sensor of ambient temperature, and the processor module is further adapted for carrying out temperature to magnetic disturbance signal
Degree compensation；The magnetic perception component 4 is connected with the modulate circuit of a signal amplitude for being suitable to regulation magnetic disturbance signal, conditioning electricity
Road is connected with the processor module.
Processor module in the embodiment can be the processor die that AD conversion is set in single-chip microcomputer, embedded, DSP etc.
Block, it would however also be possible to employ the technical scheme of external AD conversion module is realizing.
Embodiment 2
See Fig. 4-7, a kind of weighing system for being suitable to type of vehicle differentiation of method of work for the weighing system should
Weighing system includes type of vehicle detection means 10, and the type of vehicle detection means 10 is installed on the weighing area 9-1 of weighting platform 9
（See that dotted line represents region in Fig. 4）Center；
The type of vehicle detection means 10 includes：
Magnetic bias generating meanss, the bias magnetic field 5 stable for producing a spatial distribution, and the magnetic force of the bias magnetic field 5
The loop direction of circling that line is constituted（In Fig. 4, A arrows represent direction）Travel with vehicle of weighing to the direction of the weighing area 9-1
（In Fig. 4, B arrows represent direction）Unanimously, and the upper space of the weighing area 9-1 is covered, if magnetic field intensity is big, can be done
To being completely covered, if magnetic field intensity is little, although can not be completely covered, but can also reach detection and require.Magnetic bias is referred to specifically
The structure and operation principle of generating meanss.
Magnetic perception component 4, is positioned in the bias magnetic field 5, and receives vehicle of weighing and produced into the bias magnetic field 5
Raw magnetic disturbance signal.
Memory element, be stored with type of vehicle feature database, and the type of vehicle feature database includes the specified load of type of vehicle, vehicle
Weight；
The method for obtaining the type of vehicle feature database is：When all types of vehicles sail the bias magnetic field 5 into respectively, institute
State magnetic perception component 4 and receive the magnetic disturbance signal that the vehicle is produced；Each magnetic disturbance signal is converted into into the class with the vehicle
The corresponding impulse waveform of type, the amplitude of the impulse waveform are determined by the amplitude average value of the magnetic disturbance signal；It is derived from
The each impulse waveform corresponding with the type of the vehicle, that is, constitute the type of vehicle feature database；
Processor module, is connected with the memory element, is suitable to process the magnetic disturbance letter that the magnetic perception component 4 is received
Number；That is, described processor module is converted to pulse signal corresponding with the vehicle of weighing, its pulse width the magnetic disturbance signal
Spend the amplitude average value for the magnetic disturbance signal；The processor module is by the pulse signal and the type of vehicle feature database
In pulse amplitude contrast, you can obtain the type of the vehicle of weighing.
The method for setting up type of vehicle feature database is identical with the method that type of vehicle feature database is set up in improvement in embodiment 1.
That is, the described method for setting up type of vehicle feature database includes：When all types of vehicles respectively enter the bias magnetic field 5
When, the magnetic perception component 4 receives the magnetic disturbance signal that the vehicle is produced；After each magnetic disturbance signal digitized, Cong Zhongti
Take out the characteristic related to these vehicles, including the pulse amplitude average characteristics of magnetic disturbance signal, extremal features and space-time
Distribution characteristicss, it is categorized sum up after be stored in the form of eigenmatrix in memory element, the described type of vehicle feature of composition
Storehouse, i.e. obtain the type of vehicle feature database that the eigenmatrix of the magnetic disturbance sample is constituted.
Wherein, the magnetic bias generating meanss include：Permanent magnet 1, first, second magnetic conductor, the two poles of the earth of the permanent magnet 1
Contact with one end of first and second magnetic conductor respectively, and the permanent magnet 1 and first, second magnetic conductor constitute L-shaped；First
Or second the other end of magnetic conductor be disposed adjacent with the magnetic perception component 4, and the permanent magnet 1, first, second magnetic conductor,
Magnetic perception component 4 constitutes a concave shape；Wherein, the bias magnetic field 5 is suitable to from the end of first magnetic conductor 2 send, and
Length direction along the second magnetic conductor 3 passes through the magnetic perception component 4, that is, constitute the bypass loop of the magnetic line of force；The magnetic
The air magnetic gap 6 for being suitable to adjust magnetic field intensity is left between perception component 4 and the second magnetic conductor 3；The magnetic perception component 4 is wrapped
Include：Three pairs are converged body 7 in the trumpet-shaped magnetic for being suitable to converge magnetic signal, and the horn mouth that three pairs of magnetic converge body 7 is arranged outwardly
And be respectively on six end faces of a square, a cavity 8 is constituted between the medial extremity of three pairs of magnetic convergence bodies 7, the cavity 8
The three-D magnetic field sensor being connected with the processor module is provided with inside；The X-axis of setting three-D magnetic field sensor, Y-axis, Z axis point
The corresponding central axis of body 7 is not converged with first, second, third pair of magnetic consistent.
The type of vehicle detection means 10 is adapted to be mounted to the center of the weighing area 9-1, when car to be weighed
After sailing the bias magnetic field 5 into, then the X-axis of the three-D magnetic field sensor is adapted to detect for the vehicle to be weighed in the magnetic
The magnetic disturbance signal that the front or rear direction of perception component 4 produces；The Y-axis of the three-D magnetic field sensor is adapted to detect for described weighing
The magnetic disturbance signal that vehicle is produced in the left or right direction of the magnetic perception component 4；The Z axis of the three-D magnetic field sensor are suitable to
The magnetic disturbance signal that vehicle of weighing described in detection is produced in the top of the magnetic perception component 4.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, which can also be made on the basis of the above description
The change or variation of its multi-form.There is no need to be exhaustive to all of embodiment.And these belong to this
Bright spirit it is extended obvious change or change still in protection scope of the present invention among.
Claims (1)
1. a kind of method of work of weighing system, it is characterised in that include：
A, low-pass digital filter is carried out using Caesar's window low pass filter to digital weighing-up wave, cut-off frequency is set as 10Hz；
B, line slip mean filter is entered to the digital weighing signal in the range of the 0-10HZ after low-pass filtering, wherein, setting is slided
The minimum frequency and maximum amplitude of mean filter, that is, be pointed in the minimum frequency and no more than the digital weighing of maximum amplitude is believed
Number enter line slip mean filter, to obtain weight data；
The weighing system includes：
Type of vehicle detection means, the type of vehicle detection means are installed on the center of the weighing area of weighting platform；
The type of vehicle detection means includes：
Magnetic bias generating meanss, the bias magnetic field stable for producing a spatial distribution, and the magnetic line of force of the bias magnetic field are constituted
Loop direction of circling travel consistent to the direction of the weighing area with vehicle to be weighed, and cover the upper of the weighing area
Portion space；
Magnetic perception component, is positioned in the bias magnetic field, and receives produced by vehicle to be weighed into the bias magnetic field
Magnetic disturbance signal；
Memory element, be stored with type of vehicle feature database, and the type of vehicle feature database includes type of vehicle, vehicle payload ratings；
The method for obtaining the type of vehicle feature database is：When all types of vehicles respectively enter the bias magnetic field, the magnetic
Perception component receives the magnetic disturbance signal that the vehicle is produced；Each magnetic disturbance signal is converted into relative with the type of the vehicle
The impulse waveform answered, the amplitude of the impulse waveform are determined by the amplitude average value of the magnetic disturbance signal；Thus obtained and institute
The corresponding each impulse waveform of the type of vehicle is stated, that is, constitutes the type of vehicle feature database；
Processor module, is connected with the memory element, is suitable to process the magnetic disturbance signal that the magnetic perception component is received；That is,
The processor module is converted to pulse signal corresponding with the vehicle of weighing the magnetic disturbance signal, and its pulse amplitude is should
The amplitude average value of magnetic disturbance signal；
The pulse signal is contrasted by the processor module with the pulse amplitude in the type of vehicle feature database, you can obtained
Obtain the type of the vehicle of weighing；
The method of work of the weighing system also includes：
1., after unloaded all types of goods carrying vehicles sail the weighing area into one by one, the weighing system is carried out to Current vehicle
The unloaded car weight data of acquisition of weighing, while the type of Current vehicle is obtained by the type of vehicle detection means, i.e. the place
Reason device module judges the type of Current vehicle according to the magnetic disturbance signal that the magnetic perception component is obtained, and according to the Current vehicle
Type obtain the payload ratings of the vehicle, and the type the Current vehicle, payload ratings, unloaded car weight data is activation are extremely
In the memory module in weighing cell in the weighing system；
2., after sailing the weighing area one by one into again after each goods carrying vehicle is loaded, the weighing system is again to Current vehicle
Acquisition fully loaded car weight data of weighing are carried out, while the magnetic obtained according to the magnetic perception component by the type of vehicle detection means
Disturbing signal judges the type of Current vehicle again, the weighing system according to the type of Current vehicle call storage by step
The rapid payload ratings for 1. storing the vehicle in a storage module, unloaded car weight data；It is full with current by unloaded car weight data
Carry car weight data to be compared, obtain goods weight, and judge whether current goods carrying vehicle surpasses by the payload ratings data
Carry.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257339.5A CN106600970B (en) | 2013-08-22 | 2013-08-22 | Suitable for the weighing system for differentiating type of vehicle, judging whether overload |
| CN201611254887.2A CN106768229B8 (en) | 2013-08-22 | 2013-08-22 | It can carry out the working method of the weighing system of type of vehicle differentiation |
| CN201310369436.3A CN104422501B (en) | 2013-08-22 | 2013-08-22 | A kind of weighing system and method for work for being suitable to type of vehicle differentiation |
| CN201611255853.5A CN106482816B (en) | 2013-08-22 | 2013-08-22 | It can carry out the weighing system of type of vehicle differentiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310369436.3A CN104422501B (en) | 2013-08-22 | 2013-08-22 | A kind of weighing system and method for work for being suitable to type of vehicle differentiation |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611257339.5A Division CN106600970B (en) | 2013-08-22 | 2013-08-22 | Suitable for the weighing system for differentiating type of vehicle, judging whether overload |
| CN201611254887.2A Division CN106768229B8 (en) | 2013-08-22 | 2013-08-22 | It can carry out the working method of the weighing system of type of vehicle differentiation |
| CN201611255853.5A Division CN106482816B (en) | 2013-08-22 | 2013-08-22 | It can carry out the weighing system of type of vehicle differentiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104422501A CN104422501A (en) | 2015-03-18 |
| CN104422501B true CN104422501B (en) | 2017-03-29 |
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| CN201611255853.5A Expired - Fee Related CN106482816B (en) | 2013-08-22 | 2013-08-22 | It can carry out the weighing system of type of vehicle differentiation |
| CN201611257339.5A Active CN106600970B (en) | 2013-08-22 | 2013-08-22 | Suitable for the weighing system for differentiating type of vehicle, judging whether overload |
| CN201611254887.2A Active CN106768229B8 (en) | 2013-08-22 | 2013-08-22 | It can carry out the working method of the weighing system of type of vehicle differentiation |
| CN201310369436.3A Active CN104422501B (en) | 2013-08-22 | 2013-08-22 | A kind of weighing system and method for work for being suitable to type of vehicle differentiation |
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| CN201611255853.5A Expired - Fee Related CN106482816B (en) | 2013-08-22 | 2013-08-22 | It can carry out the weighing system of type of vehicle differentiation |
| CN201611257339.5A Active CN106600970B (en) | 2013-08-22 | 2013-08-22 | Suitable for the weighing system for differentiating type of vehicle, judging whether overload |
| CN201611254887.2A Active CN106768229B8 (en) | 2013-08-22 | 2013-08-22 | It can carry out the working method of the weighing system of type of vehicle differentiation |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106482816B (en) * | 2013-08-22 | 2019-02-12 | 安徽恒远电子称重设备有限公司 | It can carry out the weighing system of type of vehicle differentiation |
| CN110992701A (en) * | 2019-11-08 | 2020-04-10 | 北京万集科技股份有限公司 | Vehicle overrun detection system |
| CN111627225B (en) * | 2020-07-30 | 2020-10-30 | 杭州智诚惠通科技有限公司 | Multi-dimensional judgment method for type of axle facing nuclear load monitoring in substation |
| CN112763039B (en) * | 2020-12-30 | 2023-07-18 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| CN112763038B (en) * | 2020-12-30 | 2023-07-18 | 北京万集科技股份有限公司 | Dynamic weighing device and weighing method thereof |
| DE102021212693A1 (en) * | 2021-11-11 | 2023-05-11 | Robert Bosch Gesellschaft mit beschränkter Haftung | Device and method for detecting a vehicle and charging station for an electric vehicle |
| CN114018381B (en) * | 2021-12-07 | 2024-02-27 | 南京智鹤电子科技有限公司 | Vehicle load monitoring system and monitoring method thereof |
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| US5002141A (en) * | 1989-12-08 | 1991-03-26 | Toledo Scale Corporation | Vehicle weighing in motion apparatus and method |
| JPH06117909A (en) * | 1992-10-01 | 1994-04-28 | Kamachiyou Seiko Kk | Apparatus for measuring weight of running vehicle |
| US5490063A (en) * | 1994-02-07 | 1996-02-06 | Eaton Corporation | Control method/system including determination of an updated value indicative of gross combination weight of vehicles |
| US6084412A (en) * | 1997-03-24 | 2000-07-04 | The Johns Hopkins University | Imaging objects in a dissipative medium by nearfield electromagnetic holography |
| JP2000132788A (en) * | 1998-10-26 | 2000-05-12 | Japan Aviation Electronics Industry Ltd | Vehicle entering/leaving control system |
| JP2000149184A (en) * | 1998-11-10 | 2000-05-30 | Nippon Dainamatto Kk | Overloading control unit |
| JP2002183882A (en) * | 2000-12-12 | 2002-06-28 | Mitsubishi Heavy Ind Ltd | Overloaded vehicle detecting system |
| JP2003027983A (en) * | 2001-07-03 | 2003-01-29 | Robert Bosch Gmbh | Method and system for limiting speed and determining self-standing support force in vehicle |
| CN2738335Y (en) * | 2004-06-11 | 2005-11-02 | 北京科技大学 | Metal thin film magneto-resistance type detector for vehicle |
| CN1667374A (en) * | 2005-04-07 | 2005-09-14 | 上海交通大学 | Automatic identification system for vehicle overload |
| CA2663288A1 (en) * | 2006-09-19 | 2008-03-27 | Ventech Gmbh | Method for the automatic identification of a type of vehicle on a test stand |
| CN100458867C (en) * | 2007-04-17 | 2009-02-04 | 中国科学院计算技术研究所 | Method and device for implementing classification of vehicle and bicycle |
| CN100489466C (en) * | 2007-08-10 | 2009-05-20 | 中国航天科技集团公司第四研究院第四十四研究所 | Self-adaptive filtering method of dynamic axle weighing signal of vehicle |
| CN101603852B (en) * | 2008-11-25 | 2011-11-09 | 无锡虹业自动化工程有限公司 | Truck scale dynamic axle weighing system |
| CN201344833Y (en) * | 2008-11-25 | 2009-11-11 | 无锡虹业自动化工程有限公司 | Vehicle-weigh and axle-weight dynamic weighing system |
| CN102289939A (en) * | 2011-07-05 | 2011-12-21 | 北京航空航天大学 | Vehicle/traffic flow detection method based on three-axle magnetoresistive sensor |
| KR101317346B1 (en) * | 2012-01-09 | 2013-10-11 | 주식회사 마고테크놀러지 | Vehicle Detecting Sensor Comprising Geomagnetic Sensor Apparatus which Eliminates Shielding Effect by Using Magnetic Biasing |
| CN102901550B (en) * | 2012-11-15 | 2014-08-13 | 陕西电器研究所 | Method for implementing vehicle-mounted dynamic weighing |
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| CN103196530B (en) * | 2013-04-24 | 2015-12-02 | 郑州衡量电子科技有限公司 | Vehicle dynamic weighing system and weighing method thereof |
| CN106482816B (en) * | 2013-08-22 | 2019-02-12 | 安徽恒远电子称重设备有限公司 | It can carry out the weighing system of type of vehicle differentiation |
-
2013
- 2013-08-22 CN CN201611255853.5A patent/CN106482816B/en not_active Expired - Fee Related
- 2013-08-22 CN CN201611257339.5A patent/CN106600970B/en active Active
- 2013-08-22 CN CN201611254887.2A patent/CN106768229B8/en active Active
- 2013-08-22 CN CN201310369436.3A patent/CN104422501B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106768229B (en) | 2019-03-12 |
| CN106482816B (en) | 2019-02-12 |
| CN106482816A (en) | 2017-03-08 |
| CN104422501A (en) | 2015-03-18 |
| CN106768229B8 (en) | 2019-04-19 |
| CN106768229A (en) | 2017-05-31 |
| CN106600970A (en) | 2017-04-26 |
| CN106600970B (en) | 2019-03-19 |
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Effective date of registration: 20180604 Address after: No. 17, Xinbei District, Jiangsu Province, Changzhou City, Jiangsu Patentee after: Li Ailian Address before: No. 7, Xinbei District, Jiangsu Province, Changzhou City, Jiangsu Patentee before: Aspire Electric Technology (Changzhou) Co., Ltd. |
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Effective date of registration: 20211116 Address after: 213000 No. 21, longhui Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu Hongli weighing equipment Co., Ltd Address before: 213000 No. 17 Chuangye Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: Li Ailian |
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