CN104568095B - Automobile mounted Weighing method - Google Patents
Automobile mounted Weighing method Download PDFInfo
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- CN104568095B CN104568095B CN201310493668.XA CN201310493668A CN104568095B CN 104568095 B CN104568095 B CN 104568095B CN 201310493668 A CN201310493668 A CN 201310493668A CN 104568095 B CN104568095 B CN 104568095B
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Abstract
The present invention relates to a kind of automobile mounted method weighed, can measure vehicle-mounted cargo quality convenient, in real time.This kind of automobile mounted Weighing method, which comprises the steps：Install multiple strain gauge transducers in vehicle bridge additional；Test body is installed successively additional in railway carriage diverse location, and reads each sensor reading when installing additional every time；Indeterminate equation is constituted according to the partition coefficient array of test body quality array, sensor reading array and each sensor, the optimal allocation coefficient of each sensor is obtained by the least square solution for solving the indeterminate equation；Test body is installed successively additional in the optional position in compartment, record installs the actual mass of test body every time additional, and reads each sensor reading corresponding when installing additional every time, it is determined that the measurement error for installing additional every time；Fitting of a polynomial is carried out, the relation between measurement error value and measurement quality is determined, actual payload mass is obtained according to the measurement quality of actual loading and the measurement error sum of loading.
Description
Technical field
The present invention relates to a kind of automobile mounted method weighed, belongs to vehicle field of electromechanical integration.
Background technology
At present, the quality of vehicle loading goods can only be weighed on weighing apparatus acquisition, and vehicle itself cannot judge.Many situations
Under, due to cannot easily obtain actual cargo mass, in the case of national " overload control ", often due to overload is caused
Vehicle cannot normally go up road traveling.Simultaneously grasp situation of change of the cargo mass in transportation to goods transport safely with
And the management of fleet is also highly beneficial, therefore it is badly in need of a kind of vehicle-mounted weighing system of exploitation, energy is convenient, obtain cargo mass in real time
And the situation of change of energy all-the-way tracking cargo mass, meet the market demand.
The content of the invention
For deficiency of the prior art, the present invention is intended to provide one kind is automobile mounted to call oneself weighing method, can be convenient, real
When ground measurement vehicle-mounted cargo quality.
In order to solve the above problems, this kind of automobile mounted Weighing method, which comprises the steps：
Install multiple strain gauge transducers in vehicle bridge additional；
Test body is installed successively additional in railway carriage diverse location, and reads each sensor reading when installing additional every time；Respectively constitute survey
Examination weight array M1With sensor reading array N1；
According to test body quality array M1, sensor reading array N1Constitute with partition coefficient array S of each sensor super quiet
Determine equation：N1S=M1, the optimal allocation coefficient of each sensor is obtained by the least square solution for solving the indeterminate equation；
The actual condition of loading of simulation, installs test body additional successively in the optional position in compartment, and record installs test body every time additional
Actual mass M2, and read each sensor reading N corresponding when installing additional every time2,
According to formula：M=SN2It is determined that installing measurement quality m of test body every time additional；According to formula：δ m=M2- m determines
The measurement error δ m for installing additional every time；
Fitting of a polynomial is carried out to installing measurement quality m of test body every time additional and installing measurement error δ m every time additional, it is determined that surveying
Relation between amount error amount and measurement quality：A wherein in the formulaKFor fitting
Multinomial coefficient；And
Actual payload mass is obtained according to the measurement quality of actual loading and the measurement error sum of loading.
Preferably, also including step：
When measure automobile exercise when actual payload mass when, low pass filtered is carried out to the signal of each strain gauge transducer
Ripple process so as to which output signal is approximate stationary singnal, and the cut-off frequency of its low-pass filtering is a preset value f；
When variable quantity of the measured weighing data in the stipulated time t of is more than a setting b, this is shown
Measure weighing data；Otherwise show that last time measures weighing data.
The weighing data for measuring is shown on vehicle-mounted combination instrument by vehicle body CAN.
Preferably, the cut-off frequency preset value f is 0.001～0.005HZ；The setting b is 7～50Kg；It is described
Stipulated time t is 3～9s.
Preferably, two strain gauge transducers are installed additional at the two ends of propons, jackshaft and back axle respectively；The strain gauge transducer
It is connected with vehicle bridge by bolt and support, or boss and screwed hole is pre-machined in vehicle bridge, strain gauge transducer passes through spiral shell
Bolt is fixed on the boss.
Preferably, test body is installed successively additional in the corner and center of railway carriage；Or railway carriage front-seat, middle row and heel row according to
It is secondary to install test body additional；The test body is test counterweight or test block.
It is highly preferred that the fitted polynomial coefficients aKIn K be 2～4.
The invention has the beneficial effects as follows：In automobile front-axle, in, there is determine corresponding between the deformation of back axle and load and close
System, obtains the loading mass of the reality of vehicle by the method for field calibration and specific data processing software, when vehicle is travelled
When, the stationary singnal of sensor is obtained using the method for low-pass filtering, so as to whole process supervision is realized to cargo mass, the present invention
Vehicle-mountedization that goods is weighed is realized, is that goods is weighed there is provided a kind of very easily method；Present invention achieves to goods
The complete monitoring of amount of substance, is that goods is transported safely there is provided guarantee.
Description of the drawings
Fig. 1 is the flow chart of the automobile mounted Weighing method of the present invention；
Fig. 2 is the mounting structure schematic diagram of the strain gauge transducer of the present invention；
Fig. 3 is the schematic diagram that a kind of embodiment of counterweight is loaded in railway carriage of the present invention；
Fig. 4 is the schematic diagram that another embodiment of counterweight is loaded in railway carriage of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described further.
The automobile mounted Weighing method of the present invention, the principle and Integral Thought of the method are：When goods is loaded, vehicle
Front axle (propons) and in, back axle stress deform, this deformation can increase with the increase of cargo mass, and in corresponding
Relation.Based on this one-to-one relation, automobile front-axle (propons) and in, install strain gauge transducer additional on back axle, when
When loading goods, strain gauge transducer measure which with front axle (propons) and in, the relative displacement of be connected 2 points of back axle, and general
This displacement signal is changed into digital signal by sensor and controller, determines that each sensor is defeated by method given below
The functional relationship gone out between signal and the goods gross mass of loading, so as to realize vehicle-mountedization that goods is weighed.As shown in figure 1, its
Comprise the following specific steps that：
Step 101：Install multiple strain gauge transducers in vehicle bridge additional.Can respectively at the two ends of propons, jackshaft and back axle
Install two strain gauge transducers, total of six sensor additional.As shown in Fig. 2 the strain gauge transducer can pass through bolt and prop up
Frame is connected with propons, or boss and screwed hole are pre-machined in vehicle bridge directly, and strain gauge transducer is bolted
On the boss.
Step 102：Test body is installed successively additional in railway carriage diverse location, and reads each sensor corresponding when installing additional every time
Reading.Specifically, as shown in figure 3, in the corner of railway carriage and center additional test body can be installed successively.Or such as Fig. 4, in railway carriage
Front-seat, middle row and heel row install test body successively additional.The test body can be test counterweight or test block.The data obtained is distinguished into structure
Into test body quality array M1With sensor reading array N1。
Step 103：According to test body quality array M1, sensor reading array N1With partition coefficient array S of each sensor
Constitute indeterminate equation：N1S=M1, optimal point of each sensor is obtained by the least square solution for solving the indeterminate equation
Distribution coefficient, wherein S are the partition coefficient array of each sensor.
Step 104：Afterwards, actual condition of loading being simulated, test body being installed successively additional in the optional position in compartment, record is each
Install the actual mass M of test body additional2And read each sensor reading N corresponding when installing additional every time2.The side of installing additional in the step
Formula is different from the loading pattern of step 102, and the loading pattern in the step is to simulate true goods to install additional, embody randomness and
Verity, it is intended to determine the relation between error amount and payload mass.And the loading pattern in step 102 is in each pole of container
Extreme position is loaded, it is intended to is eliminated " position error " of system, that is, is guaranteed that, for identical goods, the test data of system is not
It is different and different because of placement location.
Step 105：According to formula：M=SN2It is determined that installing measurement quality m of test body every time additional.According to formula：δ m=
M2- m determines the measurement error δ m for installing additional every time.
Step 106：To installing measurement quality m of test body every time additional and installing measurement error δ m every time additional by formula：Fitting of a polynomial is carried out, the functional relationship between m and δ m is formed, so that it is determined that measurement
Relation between error amount and measurement quality.A wherein in the formulaKFor fitted polynomial coefficients, the K of the coefficient can be 2
～4.
Step 107：When automobile is exercised, when carrying out payload mass measurement, the signal of each strain gauge transducer is entered
Row low-pass filtering treatment so as to which output signal is approximate stationary singnal, and its low-pass filtering cut-off frequency is a preset value
f.With the signal after Filtering Processing as foundation, calculated cargo mass be one around static measurement values and up and down by a small margin
The data of fluctuation.Here cut-off frequency preset value f can be 0.001～0.005HZ。
Step 108：When variable quantity of the measured weighing data within the regular hour is more than a setting b, explanation
This change is caused by the change of cargo mass, and system will be tracked and show this change.When weighing data is in regulation
When interior variable quantity is less than less setting b, this change is may be considered by filtered slowly varying signal
Cause, rather than caused by the change of cargo mass.When the time upper limit of regulation is reached, this variable quantity is removed, system is still aobvious
Show cargo mass during loading, i.e., show by the weighing data that last time measures.Setting b described here is 7～50Kg；The rule
The t that fixes time is 3～9s.
Step 109：Actual payload mass, i.e. measurement quality and load according to actual loading are obtained according to formula M=m+ δ m
The measurement error sum of goods obtains actual payload mass, by the weighing data for measuring by vehicle body CAN in vehicle-mounted combination instrument
Show on table.
The embodiment of the automobile mounted Weighing method of the present invention is exemplified below：
1. the installation of sensor
1.1 mounting means：In the present invention, sensor has following two mounting means：
1) sensor stand is welded on into front axle (propons) with, on back axle, sensor bolt is connected with support.
2) in front axle (propons), with, on back axle, relevant position processes boss and screwed hole, sensor bolt with it is front
Axle (propons) is with, back axle is connected.
1.2 installation sites and quantity
Sensor is installed on the upper plane of front axle (propons), middle back axle, and the center line with front axle (propons), middle back axle is symmetrical
Axle, is symmetrically arranged on the left and right sides.Two sensors are installed on each axle or bridge.
2. the acquisition of weighing data
2.1 general thoughts for obtaining weighing data
1) determine the optimal allocation coefficient of each sensor；
2) with formula (1) computation and measurement result；
3) fitting of a polynomial is carried out to measurement error and measurement result, the function for measurement error being set up with measurement result is closed
System, sees formula (2)；
4) final measured value is calculated with formula (3).
The determination method of 2.2 partition coefficients
2.2.1 load mode
According to the different demarcation to container loading area, there are following two load modes.
1) in Figure of description, Fig. 3 has divided 5 regions to container, and concrete loading procedure is as follows：
A) counterweight is placed on into " position 1 " region one by one, gradually records the reading of each sensor and total matter of added counterweight
Amount；
B) after position 1 has loaded, carried out in " position 2 ", " position 3 ", " position 4 ", " position 5 " as stated above respectively
Loading record data.
2) in Figure of description, Fig. 4 has divided 7 regions to container, in addition to a region is had more, concrete loading procedure and 5
The loading procedure in individual region is identical.
2.2.2 computational methods
The reading of each sensor when record is loaded every time, constitutes sensor reading array N,
(wherein i is number of probes, and j is measurement group number)
The goods gross mass that record is loaded every time, constitutes cargo mass array M,The distribution of sensor
Coefficient constitute array beBy solving indeterminate equation N1S=M1Least square solution obtain each sensor
Optimal allocation coefficient.
The determination of 2.3 weighing datas
Counterweight is placed in container one by one, the reading of each sensor and the actual gross mass of added counterweight, structure is gradually recorded
Into array M2, and each sensor reading corresponding when installing additional every time is read, constitute array N2.Pressed with above-mentioned partition coefficient
Formula calculates the gross mass of added counterweight.
M=N2·S (1)
Actual loaded mass M2, measurement load mass m2, measurement error δ m is accordingly listed in the table below.
| Actual loaded quality (M2) | M1 | M2 | …… | Mj-1 | Mj |
| Measurement load mass (m) | m1 | m2 | …… | mj-1 | mj |
| Measurement error (δ m) | δm1 | δm2 | …… | δmj-1 | δmj |
To data (m2, δ m) and fitting of a polynomial is carried out, obtain the relation between measurement error and measured value：
The final measured value of the system (data shown in instrument) is calculated by (3) formula.
3. the display of weighing data
Weighing data is shown with the display screen of vehicle-mounted combination instrument.
The controller of vehicle control syetem sends weighing data to the vehicle-mounted combination instrument with CAN functions by prescribed form
The information is shown by information, vehicle-mounted combination instrument in display screen.
4. during travelling, the acquisition of stable weighing data
In the process of moving, due to the change at random of load, the cargo mass value that vehicle-mounted weighing system is calculated is also vehicle
The amount of one change at random, in order to stable weighing data can be obtained in whole transportation, takes following measures：
1) to sensor obtain stochastic signal carry out low-pass filtering treatment, when cut-off frequency it is low to a certain degree when, respectively
Sensor output signal over time slowly, based on the weighing data in the signal of change vehicle travel process.
2) when the variable quantity when weighing data within the time of regulation is less than a less setting b, this change
May be considered and caused by filtered slowly varying signal, rather than caused by the change of cargo mass.When regulation is reached
Between the upper limit when, remove this variable quantity, system still shows cargo mass when loading.
3), when the variable quantity when weighing data within the time of regulation exceedes above-mentioned less setting b, this change can
To be considered that the change by cargo mass causes, system will be tracked and show this change.
Above-described embodiment is illustrated merely for convenience of description, and the interest field advocated by the present invention should be with claims
It is defined, rather than is only limitted to above-described embodiment.
Claims (7)
1. a kind of automobile mounted Weighing method, it is characterised in that comprise the steps：
Install multiple strain gauge transducers in vehicle bridge additional；
Test body is installed successively additional in railway carriage diverse location, and reads each sensor reading when installing additional every time；Respectively constitute test body
Quality array M1With sensor reading array N1；
According to test body quality array M1, sensor reading array N1Indeterminate side is constituted with partition coefficient array S of each sensor
Journey：N1S=M1, the optimal allocation coefficient of each sensor is obtained by the least square solution for solving the indeterminate equation；
The actual condition of loading of simulation, installs test body additional successively in the optional position in compartment, and record installs the reality of test body every time additional
Mass M2, and read each sensor reading N corresponding when installing additional every time2；
According to formula：M=SN2It is determined that installing measurement quality m of test body every time additional；According to formula：δ m=M2- m determines each
The measurement error δ m for installing additional；
Fitting of a polynomial is carried out to installing measurement quality m of test body every time additional and installing measurement error δ m every time additional, it is determined that measurement is missed
Relation between difference and measurement quality：A wherein in the formulaKIt is multinomial to be fitted
Formula coefficient；And
Actual payload mass is obtained according to the measurement quality of actual loading and the measurement error sum of loading.
2. automobile mounted Weighing method according to claim 1, it is characterised in that also including step：
When the actual payload mass of automobile enforcement state is measured, low-pass filtering is carried out to the signal of each strain gauge transducer
Process so as to which output signal is approximate stationary singnal, and the cut-off frequency of its low-pass filtering is a preset value f；
When variable quantity of the measured weighing data in the stipulated time t of is more than a setting b, display is currently measured
Weighing data；Otherwise show that last time measures weighing data.
3. automobile mounted Weighing method according to claim 2, it is characterised in that：The weighing data for measuring is passed through into vehicle body
CAN is shown on vehicle-mounted combination instrument.
4. the automobile mounted Weighing method according to Claims 2 or 3, it is characterised in that：The cut-off frequency preset value f is
0.001～0.005HZ；The setting b is 7～50Kg；The stipulated time t is 3～9s.
5. automobile mounted Weighing method according to claim 1 and 2, it is characterised in that：
Two strain gauge transducers are installed additional at the two ends of propons, jackshaft and back axle respectively；The strain gauge transducer by bolt and
Support is connected with vehicle bridge, or boss and screwed hole are pre-machined in vehicle bridge, and strain gauge transducer is bolted on this
On boss.
6. automobile mounted Weighing method according to claim 1 and 2, it is characterised in that：The corner and center of railway carriage according to
It is secondary to install test body additional；Or railway carriage front-seat, middle row and heel row install test body successively additional；The test body for test counterweight or
Test block.
7. automobile mounted Weighing method according to claim 1 and 2, it is characterised in that：The fitted polynomial coefficients aK
In, K is 2～4.
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| CN201310493668.XA CN104568095B (en) | 2013-10-18 | 2013-10-18 | Automobile mounted Weighing method |
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| CN201310493668.XA CN104568095B (en) | 2013-10-18 | 2013-10-18 | Automobile mounted Weighing method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107505039A (en) * | 2017-07-13 | 2017-12-22 | 铜陵凯特尔科技有限责任公司 | A kind of intelligent weighing method based on precision regulation |
| CN107687889A (en) * | 2017-07-13 | 2018-02-13 | 铜陵凯特尔科技有限责任公司 | It is a kind of based on the intelligent weighing system repeatedly calibrated |
| CN107702783A (en) * | 2017-07-13 | 2018-02-16 | 铜陵凯特尔科技有限责任公司 | A kind of intelligent weighing system based on environmental factor calibration |
| CN111323107A (en) * | 2020-03-17 | 2020-06-23 | 交通运输部公路科学研究所 | Truck overload monitoring method based on laser sensor |
| CN111923850B (en) * | 2020-07-13 | 2023-01-31 | 东南大学 | Self-powered maintenance-free truck load real-time monitoring system |
| CN113776633B (en) * | 2021-08-13 | 2023-12-15 | 武汉依迅北斗时空技术股份有限公司 | Vehicle load data processing method and device |
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| JP3099702B2 (en) * | 1995-09-27 | 2000-10-16 | 三菱自動車工業株式会社 | Vehicle or / and payload measurement device |
| KR19990016728A (en) * | 1997-08-19 | 1999-03-15 | 윤종용 | Geomagnetic field compensation device |
| CN102506975B (en) * | 2011-11-23 | 2013-08-21 | 清华大学 | Real-time vehicle overload monitoring method |
| CN103017876A (en) * | 2012-12-07 | 2013-04-03 | 陕西电器研究所 | Indirect type vehicle weighing device based on strain amplification |
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