CN108534877A - A kind of vehicle load measurement method and device - Google Patents
A kind of vehicle load measurement method and device Download PDFInfo
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- CN108534877A CN108534877A CN201810299342.6A CN201810299342A CN108534877A CN 108534877 A CN108534877 A CN 108534877A CN 201810299342 A CN201810299342 A CN 201810299342A CN 108534877 A CN108534877 A CN 108534877A
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- vehicle
- acceleration
- displacement
- load
- vehicle frame
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Classifications
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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
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
- G01G19/086—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles wherein the vehicle mass is dynamically estimated
Abstract
The present invention discloses a kind of vehicle load measurement method and device can obtain carload data in real time and accurately in vehicle stationary, convenient and efficient；Simultaneously, the loading measuring device of vehicle is simple in structure, displacement sensor and acceleration transducer are installed by the position of the face leaf apring center point on vehicle frame to measure the acceleration of displacement and vehicle movement between vehicle frame and leaf apring center point respectively, acceleration transducer is additionally operable to the change of pitch angle of perception automobile simultaneously, displacement sensor and acceleration transducer are connect with a controller signals, data transmission is sensitive, and reaction is quick, is conducive to obtain automobile accurate load-carrying data in real time.
Description
Technical field
The present invention relates to vehicle weighing fields, more particularly to a kind of vehicle load measurement method and device.
Background technology
Currently, mass transit vehicle load-carrying measurement is oversize vehicle supervision department, car operation unit and driver
Joint demand.However, traditional vehicle load measurement method is weighed to vehicle by external weighing system,
It is not only complex for operation step, but also cannot achieve real-time monitoring.In this regard, propose in recent years some can real-time load measure side
Method, such as：Load-carrying based on tire pressure measures and the load-carrying based on shrapnel deformation measures, although both load measurement methods can be real
Carload is monitored when real, but measurement accuracy is not high, can not accurately measure vehicle load of the automobile under different situations.
Invention content
The object of the present invention is to provide a kind of vehicle load measurement method and device, accurate, satisfaction can be obtained in real time
Load-carrying data under the various operating statuses of vehicle.
To achieve the above object, the present invention provides following schemes：
The present invention provides a kind of vehicle load measurement method, includes the following steps：
Step 1：The position installation displacement sensor and acceleration sensing of face leaf apring center point on carriage frame
Device, under vehicle horizontal stationary state, by under the different load condition of the displacement sensor vehicle, vehicle frame to steel plate
Change in displacement between spring center point obtains " vehicle frame displacement-load-carrying " curve about vehicle；
Step 2：Under the steady stationary state of vehicle, being averaged for vehicle acceleration is measured by the acceleration transducer
Amplitude A, using ε=MA as " static decision threshold ", wherein M is the constant more than 1；
Step 3：In vehicle operation, acceleration transducer described in sustainable utilization measures vehicle of the vehicle in T time
Acceleration mean amplitude of tide Arecent, wherein T is the constant more than 0；Judge that the vehicle acceleration that acceleration transducer measures is average
Amplitude ArecentWhether ε is less than, if vehicle acceleration mean amplitude of tide ArecentLess than ε, then judge that vehicle remains static, and lead to
Crossing the displacement sensor, vehicle frame is with respect to the displacement that leaf apring center point generates at this time, according to what is obtained in step 1
The vehicle load G' of " vehicle frame displacement-load-carrying " curve acquisition at this time.
Optionally, the acceleration transducer is also used as obliquity sensor, and vehicle frame is measured in step 1 to leaf spring
While displacement between central point, the inclination angle of calibration vehicle frame measured by obliquity sensor at this time is horizontal position calibration value b0；
Vehicle frame is measured in step 3 to while displacement between leaf apring center point, utilize obliquity sensor measurement vehicle frame at this time
Inclination angle b1, then the variable angle b=b on vehicle frame relative level ground at this time1—b0, the true load-carrying of vehicle is：
Optionally, the method for measuring vehicle acceleration mean amplitude of tide A in step 2 by the acceleration transducer is as follows：
With sample frequency f1Measure t1Acceleration value in time obtains acceleration value sequence an(n=1,2,3...N), wherein f1>0, t1
>0, N>1, the arithmetic average a of acceleration value in this period is sought by controlleravg1, then vehicle accelerates in this period
Spending mean amplitude of tide A is：
Optionally, vehicle acceleration mean amplitude of tide A is measured by the acceleration transducer in step 3recentMethod
It is as follows：With sample frequency f2Measure t2Acceleration value in time obtains acceleration value sequence ai(i=1,2,3...N), wherein
f2>0, t2>0, N>1, the arithmetic average a of acceleration value in this period is sought by controlleravg2, then vehicle in this period
Acceleration mean amplitude of tide ArecentFor：
Optionally, the sample frequency f1For 10Hz；The sample frequency f2For 10Hz.
The present invention also provides a kind of loading measuring device of vehicle, including displacement sensor, acceleration transducer and controller,
Institute's displacement sensors and the acceleration transducer are used to be mounted on the position of face leaf apring center point on carriage frame
To measure the acceleration of displacement and vehicle movement between vehicle frame and leaf apring center point, institute's displacement sensors and institute respectively
Acceleration transducer is stated to be connected with the controller in a signal way..
Optionally, the acceleration transducer measures the inclination angle of vehicle frame position instantly as obliquity sensor.
The present invention achieves following technique effect compared with the existing technology：
The vehicle load measurement method of the present invention can obtain carload number in real time and accurately in vehicle stationary
According to convenient and efficient.Meanwhile the loading measuring device of vehicle is simple in structure, passes through the face leaf apring center point on vehicle frame
Displacement sensor and acceleration transducer are installed to measure displacement and the vehicle between vehicle frame and leaf apring center point respectively in position
Movement acceleration, while acceleration transducer be additionally operable to perception automobile change of pitch angle, by displacement sensor and acceleration
Sensor is connect with a controller signals, and data transmission is sensitive, and reaction is quick, is conducive to obtain automobile accurate load-carrying in real time
Data.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is vehicle frame displacement-load curve；
Fig. 2 is loading measuring device of vehicle mounting structure schematic diagram.
Wherein, reference numeral is：1, vehicle frame；2, leaf spring；21, leaf apring center point；3, wheel；4, vehicle load
Measuring device；41, displacement sensor；42, acceleration transducer.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of vehicle load measurement method and device, accurate, satisfaction can be obtained in real time
Load-carrying data under the various operating statuses of automobile.
Based on this, a kind of vehicle load measurement method of present invention offer can obtain in real time and accurately in vehicle stationary
Obtain carload data；And loading measuring device of vehicle is simple in structure, passes through the face leaf apring center point on vehicle frame
Displacement sensor and acceleration transducer are installed to measure displacement and the vehicle between vehicle frame and leaf apring center point respectively in position
Movement acceleration, while acceleration transducer be additionally operable to perception automobile change of pitch angle, by displacement sensor and acceleration
Sensor is connect with a controller signals, and data transmission is sensitive, and reaction is quick, is conducive to obtain automobile accurate load-carrying in real time
Data.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Embodiment one：
The present embodiment provides a kind of vehicle load measurement methods, include the following steps：
Step 1：Based on when vehicle load changes and increases, leaf spring deformation changes, and vehicle frame can sink, still
Leaf apring center position will not deform upon, therefore vehicle frame deflection can use the displacement of vehicle frame to leaf apring center
It characterizes, so displacement sensor 41 is installed in the position of the present embodiment face leaf apring center point 21 on the vehicle frame 1 of vehicle
With acceleration transducer 42, and under horizontal in vehicle first and totally stationary state, automobile is measured not by displacement sensor 41
Under same load condition, the change in displacement between vehicle frame 1 and leaf apring center point 21, to obtain " the vehicle frame position about vehicle
Shifting-load-carrying " curve, as shown in Figure 1.
Step 2：Under the steady stationary state of vehicle, being averaged for vehicle acceleration is measured by acceleration transducer 42 and is shaken
Width A, using ε=MA as " static decision threshold ", wherein M is the constant more than 1；
Step 3：In vehicle operation, sustainable utilization acceleration transducer 42 measures vehicle of the vehicle in T time and adds
Speed mean amplitude of tide Arecent, wherein T is the constant more than 0；Judge that the vehicle acceleration that acceleration transducer 42 measures is average
Amplitude ArecentWhether ε is less than, if vehicle acceleration mean amplitude of tide ArecentLess than ε, then judge that vehicle remains static, and lead to
It crosses displacement sensor 41 and measures at this time that vehicle frame 1 is with respect to the displacement that leaf apring center point 21 generates, further according to being obtained in step 1
The vehicle load G' of " vehicle frame displacement-load-carrying " curve acquisition at this time.
Further, in this embodiment acceleration transducer 42 also measures vehicle frame relative level as obliquity sensor
Angle change, when vehicle parking is in level ground, the inclination angle of calibration vehicle frame measured by obliquity sensor at this time is horizontal position
Set calibration value b0, general b0=0；When measuring vehicle frame 1 in step 3 with respect to the displacement that leaf apring center point 21 generates, using inclining
Angle transducer measures the inclination angle b of vehicle frame at this time1If b1=b0, this illustrates that automobile travels in same level always, 1 phase of vehicle frame
It does not change for the angle of horizontal plane, the true load-carrying G of vehicle is G'；And if b1≠b0, then vehicle frame 1 is with respect to water
The variable angle that plane earth generates is b=b1—b0, then the true load-carrying of vehicle is：
Further, the method for measuring vehicle acceleration mean amplitude of tide A in step 2 by acceleration transducer 42 is as follows：
With sample frequency f1Measure t1Acceleration value in time obtains acceleration value sequence an(n=1,2,3...N), wherein f1>0, t1
>0, N>1, and the acceleration value sequence signal is passed into controller, it is calculated in this period and is accelerated by controller control
The arithmetic average a of angle valueavg1, and its preset program formula is passed through by controller：
T is calculated1Vehicle acceleration mean amplitude of tide A in time.
Further, vehicle acceleration mean amplitude of tide A is measured by acceleration transducer 42 in step 3recentMethod
It is as follows：With sample frequency f2Measure t2Acceleration value in time obtains acceleration value sequence ai(i=1,2,3...N), wherein
f2>0, t2>0, N>1, and the acceleration value sequence signal is passed into controller, this period is calculated by controller control
The arithmetic average a of interior acceleration valueavg2, and its preset program formula is passed through by controller：
T is calculated2Vehicle acceleration mean amplitude of tide A in timerecent；And the vehicle acceleration is averaged by controller
Amplitude ArecentWith the definite value obtained by step 2, i.e., static decision threshold ε is compared to pair, if controller measures vehicle acceleration
Mean amplitude of tide ArecentLess than static decision threshold ε, i.e. vehicle remains static, then command displacement sensor 41 measures at this time
Vehicle frame 1 is obtained with respect to the change in displacement that leaf apring center point 21 generates further according to " vehicle frame displacement-load-carrying " curve shown in FIG. 1
Take vehicle load G' corresponding with institute's measuring car frame shift value.Correspondingly, if controller measures vehicle acceleration mean amplitude of tide
ArecentNot less than static decision threshold ε, then reclocking is controlled by controller and obtain new acceleration value sequence ai(i=1,
2、3...N)。
Below with ε=0.3, sample frequency f2To obtain acceleration degree series of certain heavy truck in 5 seconds sections for 10Hz
Value, and the inclination angle of automobile does not generate variation, i.e. b in this process1=b0。
Gained sequence is ai(i=1,2,3...10)=(0.8,0.6,1.5,1.75,2.1,1.85,1.97,0.65,
0.33,0.96), then
Correspondingly, vehicle acceleration mean amplitude of tide is：
By contrast, Arecent>ε, i.e., vehicle is kept in motion at this time, controller reclocking, and with identical sampling frequency
Rate f2New acceleration value sequence is obtained, b during being somebody's turn to do1=b0, gained sequence is ai(i=1,2,3...10)=(0.1,0.3,
0.08,0.15,0.17,0.28,0.32,0.18,0.02,0.2), then
Correspondingly, vehicle acceleration mean amplitude of tide is：
By contrast, Arecent<ε, i.e., vehicle remains static at this time, measures 1 phase of vehicle frame using displacement sensor 41 at this time
It is 2.1cm, " vehicle frame displacement-load-carrying " curve acquisition according to figure 1 and institute to the displacement that leaf apring center point generates
The corresponding vehicle load G=G'=17.8t of measuring car frame shift value (unit is ton).
It can be seen that vehicle load measurement method provided in this embodiment, passes through displacement sensor and acceleration transducer
Between mutual cooperation, when under vehicle stationary state, carload data can be obtained in real time and accurately, it is convenient and efficient,
And high certainty of measurement.
Embodiment two：
The present embodiment provides a kind of loading measuring device of vehicle, including displacement sensor 41, acceleration transducer 42 and control
Device processed, displacement sensor 41 and acceleration transducer 42 are used to be mounted on face leaf apring center point 21 on carriage frame 1
Position measures acceleration of the vehicle frame with respect to the displacement and vehicle movement that leaf apring center point generates respectively, states displacement sensing
Device 41 and acceleration transducer 42 are connect with controller signals, and controller, which can be mounted in driver's cabin, driver or other works
Make personnel to manipulate in the car, or controller is installed into automobile chassis, remote control manipulation is carried out to it by staff.
Further, acceleration transducer 42 as obliquity sensor measure vehicle frame instantly position relative to level ground
Inclination angle.
It can be seen that loading measuring device of vehicle provided in this embodiment is simple in structure, pass through the face steel plate on vehicle frame
The position installation displacement sensor and acceleration transducer of spring center point come measure respectively vehicle frame and leaf apring center point it
Between displacement and vehicle movement acceleration, while acceleration transducer be additionally operable to perception automobile change of pitch angle, displacement is passed
Sensor and acceleration transducer are connect with a controller signals, and data transmission is sensitive, and reaction is quick, are conducive to obtain automobile reality
When accurate load-carrying data.
It should be noted that loading measuring device of vehicle in the present invention be suitable for the trucies of various models, lorry or its
Carriage type in him, in real time measure when sample frequency be not limited to 10Hz, can according to actual conditions adaptive change；
Corresponding ε values are not limited to 0.3, and ε values can be adjusted according to actual conditions；Finally, different vehicles and different shapes
Vehicle frame displacement-the load curve obtained under state is not identical, however it is not limited to the vehicle frame given by above-described embodiment
Displacement-load curve.
Specific case is applied in the present invention, and principle and implementation of the present invention are described, above example
Illustrate the method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (8)
1. a kind of vehicle load measurement method, which is characterized in that include the following steps：
Step 1：The position installation displacement sensor and acceleration transducer of face leaf apring center point on carriage frame,
Under vehicle horizontal stationary state, by under the different load condition of the displacement sensor vehicle, vehicle frame to steel plate bullet
Change in displacement between spring central point obtains " vehicle frame displacement-load-carrying " curve about vehicle；
Step 2：Under the steady stationary state of vehicle, the mean amplitude of tide of vehicle acceleration is measured by the acceleration transducer
A, using ε=MA as " static decision threshold ", wherein M is the constant more than 1；
Step 3：In vehicle operation, acceleration transducer described in sustainable utilization measures vehicle of the vehicle in T time and accelerates
Spend mean amplitude of tide Arecent, wherein T is the constant more than 0；Judge the vehicle acceleration mean amplitude of tide that acceleration transducer measures
ArecentWhether ε is less than, if vehicle acceleration mean amplitude of tide ArecentLess than ε, then judge that vehicle remains static, and pass through institute
Vehicle frame is with respect to the displacement that leaf apring center point generates at this time for displacement sensors measurement, according to " the vehicle frame obtained in step 1
The vehicle load G' of displacement-load-carrying " curve acquisition at this time.
2. vehicle load measurement method according to claim 1, which is characterized in that the acceleration transducer, which is also used as, to incline
Angle transducer, measures vehicle frame to while displacement between leaf apring center point in step 1, calibration inclination angle sensing at this time
The inclination angle of vehicle frame measured by device is horizontal position calibration value b0；
Vehicle frame is measured in step 3 to while displacement between leaf apring center point, utilize obliquity sensor measurement vehicle frame at this time
Inclination angle b1, then the variable angle b=b on vehicle frame relative level ground at this time1—b0, the true load-carrying of vehicle is：
3. vehicle load measurement method according to claim 1 or 2, which is characterized in that pass through the acceleration in step 2
The method for spending sensor measurement vehicle acceleration mean amplitude of tide A is as follows：With sample frequency f1Measure t1Acceleration value in time,
Obtain acceleration value sequence an(n=1,2,3...N), wherein f1>0, t1>0, N>1, it seeks adding in this period by controller
The arithmetic average a of velocity amplitudeavg1, then vehicle acceleration mean amplitude of tide A is in this period：
4. vehicle load measurement method according to claim 1 or 2, which is characterized in that pass through the acceleration in step 3
Spend sensor measurement vehicle acceleration mean amplitude of tide ArecentMethod it is as follows：With sample frequency f2Measure t2Acceleration in time
Value, obtains acceleration value sequence ai(i=1,2,3...N), wherein f2>0, t2>0, N>1, it is sought in this period by controller
The arithmetic average a of acceleration valueavg2, then vehicle acceleration mean amplitude of tide A in this periodrecentFor：
5. vehicle load measurement method according to claim 3, which is characterized in that the sample frequency f1For 10Hz.
6. vehicle load measurement method according to claim 4, which is characterized in that the sample frequency f2For 10Hz.
7. a kind of loading measuring device of vehicle, which is characterized in that including displacement sensor, acceleration transducer and controller, institute
The position of displacement sensors and the acceleration transducer for the face leaf apring center point on carriage frame is come
Measure the acceleration of the displacement and vehicle movement between vehicle frame and leaf apring center point respectively, institute's displacement sensors and described
Acceleration transducer is connected with the controller in a signal way..
8. loading measuring device of vehicle according to claim 7, which is characterized in that the acceleration transducer is as inclination angle
The inclination angle of sensor measurement vehicle frame position instantly.
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| CN201810299342.6A CN108534877A (en) | 2018-04-04 | 2018-04-04 | A kind of vehicle load measurement method and device |
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| CN201810299342.6A CN108534877A (en) | 2018-04-04 | 2018-04-04 | A kind of vehicle load measurement method and device |
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Cited By (7)
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| CN110095175A (en) * | 2019-05-08 | 2019-08-06 | 北京汇通天下物联科技有限公司 | Load-Carrying Equipment parameter calibrating method, apparatus and system |
| CN110470370A (en) * | 2019-09-24 | 2019-11-19 | 江苏中宏讯达科技有限公司 | A kind of vehicle carrying sensory perceptual system |
| CN110645952A (en) * | 2019-09-24 | 2020-01-03 | 江苏中宏讯达科技有限公司 | Vehicle spring deformation sensor and acquisition method |
| CN110646074A (en) * | 2019-09-16 | 2020-01-03 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted weight early warning method and system, storage medium and vehicle-mounted terminal |
| CN110940405A (en) * | 2018-09-25 | 2020-03-31 | 比亚迪股份有限公司 | Method and device for calculating total mass of vehicle |
| CN112945363A (en) * | 2019-12-10 | 2021-06-11 | 东北大学秦皇岛分校 | Vehicle self-load precision measurement method based on double sensors |
| CN114964449A (en) * | 2022-05-13 | 2022-08-30 | 武汉工程大学 | Vehicle load measuring device and method |
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Application publication date: 20180914 |