CN108387382B - A kind of road spectrum acquisition system and method - Google Patents
A kind of road spectrum acquisition system and method Download PDFInfo
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- CN108387382B CN108387382B CN201810166688.9A CN201810166688A CN108387382B CN 108387382 B CN108387382 B CN 108387382B CN 201810166688 A CN201810166688 A CN 201810166688A CN 108387382 B CN108387382 B CN 108387382B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention relates to vehicular fields, acquisition system and method are composed more particularly to a kind of road, the system includes: test vehicle and the engine controller on the test vehicle, the system further include: CAN message collector and the fuel consumption meter being connect respectively with the CAN message collector, attitude transducer, GPS, host computer, the fuel consumption meter, the attitude transducer, the GPS is arranged on the test vehicle, the engine controller is connect with the CAN message collector, according to the test vehicle vehicle programme path, when the test vehicle is run by the programme path, the host computer obtains the information for the engine controller that the CAN message collector is sent in real time, the information of the attitude transducer, the information of the information of the GPS and the fuel consumption meter, And all information are analyzed, obtain target road spectrum and the first oil consumption based on the programme path.Through the invention, the acquisition of road spectrum is accurately and comprehensively realized.
Description
Technical field
The present invention relates to vehicular fields, compose acquisition system and method more particularly to a kind of road.
Background technique
So far, with the aggravation that world energy sources are in short supply, the rise year by year of oil price, the oil consumption of vehicle is more next for automobile industry development
More become one of an important factor for consumer considers when purchasing vehicle.Currently, China's current has about the standard of complete-vehicle oil consumption limit value
Traffic ministerial standard JT 719-2008 and the standard GBT27840-2011 and GB30510-2014 of Ministry of Industry and Information's publication, all to vehicle
There is specific test method require and oil consumption limit value.But two standards all have some limitations, and can not feed back
The real vehicle road oil consumption of vehicle.
Traffic ministerial standard JT 719-2008 is weighted using constant-speed fuel economy, so that comprehensive oil consumption is obtained, but should
Standard can not embody the oil consumption monitoring of vehicle idling, acceleration.GBT27840-2011 uses city, outskirts of a town, three kinds of circulation industrials of high speed
Condition oil consumption weighting, to obtain comprehensive oil consumption；But with the development of nation-building, the operating condition of road is also varied, three works
The proportion of condition is also varied, and in addition goods vehicle should have hill path operating condition.
It is C-WTVC circulation used in national standard GB/T 27840-2011, which is with world's heavy type commercial vehicle
Based on transient cycle (world transient vehicle cycle, WTVC), but the survey of the operating condition of the circulation and Japan
Examination state of cyclic operation has a long way to go, and in Japan, city proportion is very big, and the city and outskirts of a town of China add up and also just account for half
Left and right, and we country truck be substantially according to Isuzu Motors as mark post design, irrationality therein as one can imagine, separately
The state of cyclic operation of outer Japan is to recommend half cargo condition as most representative state, and the C-WTVC of our countries is with design maximum
Gross mass is differentiation standard, and difference is also very big.
The Metro cycle test overall length in the U.S. is 1372+505=1877s, and wherein 0-505s is cold transient phase,
506-1382s is the stabilization sub stage, and 1383-1877s is thermal transient section；It is 765+15+ that super expressway state of cyclic operation, which tests total duration,
765=15145s, wherein 0-765 is warm up phase, and 766-780s is the idling stage, and 781-1545s is the data sampling stage.In
The FTP-75 standard phase of the ratio of state's existing C-WTVC measurement condition either time or the wave band of data all with the U.S.
Seemingly, and we design the technology of the Japan of use as reference standard, the standard testing of actual road test use America and Europe, develop thus
Go out the testing standard for being suitble to Chinese road existing.
It is schematic diagram (horizontal axis expression time, the longitudinal axis expression speed of C-WTVC state of cyclic operation in the prior art as shown in Figure 1
Degree), which is divided into urban district 900s, suburbs 468s, high speed 432s, amounts to 1800s.Curve includes idling operation and traveling
Two kinds of operating condition.The state of cyclic operation is used in design weight greater than 3500kg gasoline and diesel oil commercial vehicle.But the prior art has
Have the disadvantage that: 1) state of cyclic operation does not have gear and grade information；2) commercial vehicle driving cycle should have hill path information, while C-
The road percent information of WTVC and the classification of road ratio in China are not inconsistent.Due to causing according to the curve simulation with first-class factor
The practical oil consumption of real vehicle cannot be represented with the commercial vehicle oil consumption of test.
Summary of the invention
For the defects in the prior art with deficiency, the present invention provides a kind of road spectrum acquisition system and method, with it is accurate,
Comprehensively realize the acquisition of road spectrum.
To achieve the goals above, the present invention provides the following technical scheme that
A kind of road spectrum acquisition system, the system comprises: test vehicle and the engine on the test vehicle
Controller, the fuel consumption meter being connect the system also includes: CAN message collector and respectively with the CAN message collector, appearance
State sensor, GPS, host computer, the fuel consumption meter, the attitude transducer, the GPS are arranged on the test vehicle, institute
It states engine controller to connect with the CAN message collector, according to the test vehicle vehicle programme path, when the test
When vehicle is run by the programme path, the host computer obtains the engine that the CAN message collector is sent in real time
The information of controller, the information of the attitude transducer, the information of the information of the GPS and the fuel consumption meter, and analyze institute
There is information, obtains target road spectrum and the first oil consumption based on the programme path.
Preferably, the system also includes be connected between the fuel consumption meter and the CAN message collector first turns
Change device, first converter is adopted for converting CAN message data for the pulse that the fuel consumption meter exports to the CAN message
Storage output.
Preferably, the system also includes be connected between the attitude transducer and the CAN message collector
Two converters, second converter be used for by the Serial Port Information that the attitude transducer exports be converted into CAN message data to
The CAN message collector output.
Preferably, the system also includes:
The environmental chamber that is connect respectively with the host computer, rotating hub；Obtain based on the programme path target road spectrum with
And after oil consumption, the test vehicle is placed in the rotating hub, and it is actual outer for simulating to be located at the test vehicle
In the environmental chamber of portion's environment, the host computer controls the rotating hub according to target road spectrum and runs, and runs in the rotating hub
Acquire the second oil consumption of the fuel consumption meter afterwards, the difference of the second oil consumption described in the upper computer detection and first oil consumption whether
In setting range, if it is, target road spectrum is qualified；Otherwise, the target road spectrum is readjusted.
Preferably, the fuel consumption meter includes: the first fuel consumption meter and the second fuel consumption meter connecting respectively with the host computer；Institute
It states the first fuel consumption meter to be mounted in the oil inlet pipe of the test vehicle, second fuel consumption meter is mounted on returning for the test vehicle
In oil pipe.
Preferably, the programme path includes: four kinds of city, town and country, hill path and high speed road conditions, according to the test vehicle
Vehicle programme path are as follows: different length is arranged for four kinds of road conditions according to the vehicle of the test vehicle；The host computer exists
When test vehicle is in different loads state, the examination is obtained from the engine controller by the CAN message collector
Wheel speed, revolving speed, torque, power, gear and the distributive value validated the car, the driving rail of the test vehicle is obtained from the GPS
Mark and speed obtain the body gesture and acceleration of the test vehicle from the attitude transducer, from the fuel consumption meter
Obtain the first oil consumption of the test vehicle；The host computer analyzes all information and obtains the process of the target road spectrum are as follows: root
According to the speed, the revolving speed, the torque, the power, the gear and the distributive value, interpretational criteria number is set, it will
The interpretational criteria number carries out short stroke segmentation and obtains target short stroke with screening, according to C-WTVC state of cyclic operation by the target
Short stroke carries out selection and combination, obtains primary driving cycle, idling operation is added in the primary driving cycle, gear obtains
It is composed to the target road.
A kind of road spectrum acquisition method, which comprises
According to test vehicle vehicle programme path；
When the test vehicle is run by the programme path, the engine that CAN message collector is sent is obtained in real time
The information of controller, the information of attitude transducer, the information of the information of GPS and fuel consumption meter；
All information are analyzed, target road spectrum and the first oil consumption based on the programme path are obtained.
Preferably, the programme path includes: four kinds of city, town and country, hill path and high speed road conditions；
It is described according to test vehicle vehicle programme path include: according to the vehicle of the test vehicle, be four kinds of roads
Different length is arranged in condition.
Preferably, described real-time to obtain the information of engine controller, attitude transducer that CAN message collector sends
The information of information, the information of GPS and fuel consumption meter includes:
The information of the engine controller include: the wheel speed of the test vehicle, revolving speed, torque, power, gear and
Distributive value；The information of the attitude transducer includes: the body gesture and acceleration of the test vehicle；The letter of the GPS
Breath includes: the wheelpath and speed of the test vehicle；The information of the fuel consumption meter includes: first oil consumption；
All information are analyzed, obtaining the target road spectrum based on the programme path includes: according to the speed, described turn
Interpretational criteria number is arranged in fast, the described torque, the power, the gear and the distributive value；
The interpretational criteria number is subjected to short stroke segmentation and obtains target short stroke with screening；
The target short stroke is subjected to selection and combination according to C-WTVC state of cyclic operation, obtains primary stroke operating condition；
Idling operation is added in the primary driving cycle, gear obtains the target road and composes.
Preferably, the method also includes:
The target road spectrum is obtained with after oil consumption, the test vehicle is placed in rotating hub, and make the test vehicle
In the environmental chamber for simulating actual external environment；
The rotating hub operation is controlled according to target road spectrum；
And the second oil consumption is obtained from the fuel consumption meter after the rotating hub has been run；
Whether within the set range the difference of second oil consumption and first oil consumption is detected, if it is, described in determining
Target road spectrum is qualified；Otherwise, the target road spectrum is readjusted, until the difference of second oil consumption and first oil consumption is being set
Until determining in range.
The beneficial effects of the present invention are:
Road spectrum acquisition system and method provided by the invention, according to test vehicle vehicle programme path, when the instruction carriage
When by programme path operation, information, the posture biography of the sender and controller that host computer is sent by CAN message collector
The information of the information of sensor, the information of GPS and fuel consumption meter, and all information are analyzed, obtain the mesh based on the programme path
Mark road spectrum and the first oil consumption.By the application, the acquisition of road spectrum can be accurately and comprehensively realized.
Detailed description of the invention
Fig. 1 is the schematic diagram of C-WTVC state of cyclic operation in the prior art.
Fig. 2 is a kind of structural schematic diagram of road of embodiment of the present invention spectrum acquisition system.
Fig. 3 is speed criterion numeral statistical chart when vehicle is in fully loaded and 75% load in the embodiment of the present invention.
Fig. 4 is a kind of statistical chart that target road is composed in the embodiment of the present invention.
Fig. 5 is a kind of flow chart of road of embodiment of the present invention spectrum acquisition method.
Specific embodiment
In order to enable those skilled in the art to be further understood that feature and technology contents of the invention, with reference to the accompanying drawing
It elaborates with embodiment to the embodiment of the present invention.
Be as shown in Figure 2 road of the embodiment of the present invention spectrum acquisition system a kind of structural schematic diagram, comprising: test vehicle and
Engine controller on the test vehicle, the system also includes: CAN message collector and respectively with it is described
Fuel consumption meter, the attitude transducer, GPS, host computer of CAN message collector connection, the fuel consumption meter, the attitude transducer, institute
It states GPS to be arranged on the test vehicle, the engine controller is connect with the CAN message collector, according to the examination
It validates the car a vehicle programme path, when the test vehicle is run by the programme path, described in the host computer obtains in real time
Information, the information of the attitude transducer, the information of the GPS for the engine controller that CAN message collector is sent
And the information of the fuel consumption meter, and all information are analyzed, obtain the target road spectrum and the first oil based on the programme path
Consumption.Specifically, the data obtained from CAN message collector (initial data is CAN message) are deposited into number by software in host computer
According to buffer area, the software of host computer constantly monitors the CAN message data frame number of buffer area, when data frame number reaches setting frame (ratio
Such as, 1000 frame), software reads the data frame of buffer area, parses according to CAN analysis protocol into each frame, every parsing one
Text file is written in parsing result by a data frame.Text file can be multiple, for example include: ID1Text file, ID2Text
This document, ID3Text file ... .IDnText file, wherein n is greater than 3.
It should be noted that can be by testing crew according to the test of main engine plants according to the vehicle programme path of test vehicle
And experience carries out program operation, the route that vehicle difference is then planned is different；Programme path are as follows: city, town and country, hill path and high speed
Four kinds of road conditions；According to the test vehicle vehicle programme path are as follows: according to the vehicle of the test vehicle be four kinds of road conditions
Different length is set；For example, operator is arranged according to the vehicle of certain commercial vehicle, urban traffic situation is 35km, town and country road conditions are
107km, hill path 137km, high-speed road conditions 167km.Wherein, road conditions planning in hill path is relatively suitble to commercial vehicle operation.
Further, the host computer can be acquired when test vehicle is in different loads state by the CAN message
Device obtains wheel speed, revolving speed, torque, power, gear and the distributive value of the test vehicle from the engine controller, from institute
Wheelpath and speed that GPS obtains the test vehicle are stated, the vehicle of the test vehicle is obtained from the attitude transducer
Figure state and acceleration obtain the first oil consumption of the test vehicle from the fuel consumption meter；The host computer analyzes all letters
Breath obtains the process of target road spectrum are as follows: according to the speed, the revolving speed, the torque, the power, the gear with
And interpretational criteria number is arranged in the distributive value, and the interpretational criteria number is carried out short stroke segmentation and obtains the short row of target with screening
The target short stroke is carried out selection and combination according to C-WTVC state of cyclic operation, obtains primary driving cycle, described first by journey
Idling operation is added in grade driving cycle, gear obtains the target road spectrum.
Specifically, when fuel consumption meter output is pulse signal, the system can also include: the first converter, and described the
One converter is connected between the fuel consumption meter and the CAN message collector, and first converter is used for the oil consumption
The pulse of instrument output is converted into CAN message data and exports to the CAN message collector.For example, the type of first converter
Number be K-8523CAN.
Specifically, when the attitude transducer passes through serial ports output data, the system can also include: the second conversion
Device, second converter are connected between the attitude transducer and the CAN message collector, and second converter is used
CAN message data are converted into the Serial Port Information for exporting the attitude transducer to export to the CAN message collector.Than
Such as, the model GCAN-201 (CAN232/485MB) of the second converter.
Specifically, in order to realize the precise acquisition to oil consumption, the fuel consumption meter can also include: respectively with the host computer
The first fuel consumption meter and the second fuel consumption meter of connection；First fuel consumption meter is mounted in the oil inlet pipe of the test vehicle, described
Second fuel consumption meter is mounted in the oil return pipe of the test vehicle.The host computer presses the programme path in the test vehicle
When operation, obtain the value of first fuel consumption meter and the value of second fuel consumption meter, by the value of first fuel consumption meter with it is described
The value of second fuel consumption meter makes the difference to obtain first oil consumption.
In the embodiment of the present invention, CAN message acquisition obtain engine controller, speed and wheelpath, body gesture and
4 circuit-switched data of rate of fuel consumption (amount).The pulse signal of fuel consumption meter output and the rs 232 serial interface signal of (body gesture) VN100 output pass through conversion
Device (above-mentioned the first converter and the second converter) is converted to the CAN data that baud rate is 250k and exports, and GPS receiver is matched
The CAN data that baud rate is 250k are set to export.4 road signals are finally divided into two-way CAN signal according to baud rate difference, even
It is connected on two CAN physical ports of CAN message collector, that realizes 4 road signals synchronizes real-time acquisition.
Specifically, the interpretational criteria number is provided that
Road condition criterion numeral statistics can be programmed based on the Matlab on host computer and be realized, by extracting objective function
Point, length, the ratio of data point, then integrate.It is quasi- to amount to 32 groups of evaluations for the corresponding four kinds of load of every kind of road conditions, two groups of acquisition data
Then count.For example, it may include four kinds of load that vehicle, which is in different loads state: unloaded, fully loaded, 75% load, 50% load, often
The corresponding four kinds of load of kind of road conditions, as shown in figure 3, being that vehicle is in fully loaded with speed criterion numeral statistical chart when 75% load.
Specifically, the cutting procedure for the interpretational criteria number being carried out short stroke is as follows:
Short stroke is between being started with idling operation (operating condition when speed is a 0km/h) end to next idling operation
Travel speed section.The screening of short stroke is mainly according to the length of short stroke and the velocity amplitude range of short stroke.To extraction
Effective short stroke be combined, and seek related coefficient with sample road totality operating condition, related coefficient is greater than setting coefficient (ratio
Such as, set coefficient as 0.95) be sample representation road running mode, i.e. target short stroke.
Specifically, the target short stroke is carried out by selection and combination according to C-WTVC state of cyclic operation, obtains primary traveling
The process of operating condition is as follows:
The length of objectives Primary driving cycle is determined as 1800s according to C-WTVC state of cyclic operation curve, then according to evaluation
Criterion numeral, road running mode length factor carry out selection and combination to target short stroke, the primary row finally obtained to combination
Sail operating condition.Further, addition idling operation, gear obtain target road spectrum in primary driving cycle, are the present invention as shown in Figure 4
A kind of statistical chart that target road is composed in embodiment.Fig. 4 is the target road spectrum for speed, gear, the gradient under different road conditions.
In conclusion spectrum acquisition system in road provided in an embodiment of the present invention works as institute according to the vehicle programme path of instruction carriage
When stating instruction carriage and running by the programme path, host computer obtains fuel consumption meter, attitude transducer, GPS information in real time and starts
Machine controller information analyzes all information, obtains target road spectrum and the first oil consumption based on the programme path.By this hair
It is bright to have obtained a kind of representative driving pattern road conditions, to comprehensively and accurately realize road spectrum acquisition.
Further, for the accuracy of better verification object road spectrum, in another embodiment of the invention, the system
It can also include: the environmental chamber being connect respectively with the host computer, rotating hub；It is composed obtaining the target road based on the programme path
And after oil consumption, the test vehicle is placed in the rotating hub, and it is actual for simulating to be located at the test vehicle
In the environmental chamber of external environment, the host computer controls the rotating hub according to target road spectrum and runs, and transports in the rotating hub
Acquire the second oil consumption of the fuel consumption meter after row, whether is the difference of the second oil consumption described in the upper computer detection and first oil consumption
Within the set range, if it is, target road spectrum is qualified；Otherwise, the target road spectrum is readjusted.The embodiment of the present invention
In, for the consistency of simulation test environment and real vehicle road driving environment, vehicle, driver immobilize, environmental chamber simulation
Real vehicle environment.Consider the big feature of diesel engine recirculating oil quantity, fuel consumption meter can be reduced oil return and be made by the way of temperature-compensating
At error.
Specifically, setting range can be determined according to actual tests vehicle calibration, for example, setting range is ± 5%, for
16 target roads spectrum that 32 sample numbers obtain, separate loading, branch condition carry out rotating hub verifying, hundred kilometers of oil of every target road spectrum
It consumes control errors to compose 16 target roads within ± 5%, then through the interpretational criteria number of test, is fitted to four according to load
Item.Test process is accelerated excessive to cannot achieve that test vehicle follows, the gradient is excessively steep, cannot achieve the songs such as smooth shift
Line, optimizes fitting, and a not separate loading finally may be implemented, may include the gradient, gear, city, outskirts of a town, high speed, mountain
The typical commercial bus or train route spectrum on road.In conclusion being may be implemented through the invention comprising city, outskirts of a town, high speed, four kinds of hill path road
The typical Lu Pu of condition, and rack oil consumption and the oil consumption of real road are within ± 5%.
In conclusion can the dynamic property economy that accurately evaluate vehicle through the invention horizontal；According to what is made
Lu Pu, when developing early period, can effective guiding vehicle power performance exploitation；According to the service condition of vehicle, there can be needle
To being developed to transmission system for property.
For above system, the present invention also provides a kind of roads to compose acquisition method, is in the embodiment of the present invention as shown in Figure 5
A kind of flow chart of road spectrum acquisition method, comprising the following steps:
Step 100: starting.
Step 101: according to test vehicle vehicle programme path.
Specifically, the programme path may include: four kinds of city, town and country, hill path and high speed road conditions.
It is described according to test vehicle vehicle programme path include: according to the vehicle of the test vehicle, be four kinds of roads
Different length is arranged in condition.
It should be noted that above-mentioned programme path is planned by operator according to the test and experience of main engine plants,
Certain programme path can also be arranged according to vehicle difference is more than or less than four kinds of road conditions, in this regard, the application is without limitation.Than
Such as, operator according to the vehicle of certain commercial vehicle be arranged urban traffic situation be 35km, town and country road conditions are 107km, hill path 137km, height
Fast road conditions are 167km.Wherein, road conditions planning in hill path is relatively suitble to commercial vehicle operation.
Step 102: when the test vehicle is run by the programme path, obtaining CAN message collector in real time and send
The information of engine controller, the information of attitude transducer, the information of the information of GPS and fuel consumption meter.
Specifically, the information of the engine controller include: the wheel speed of the test vehicle, revolving speed, torque, power,
Gear and distributive value；The information of the attitude transducer includes: the body gesture and acceleration of the test vehicle；It is described
The information of GPS includes: the wheelpath and speed of the test vehicle；The information of the fuel consumption meter includes: first oil
Consumption.
Step 103: analyzing all information, obtain target road spectrum and the first oil consumption based on the programme path.
All information are analyzed, obtaining the target road spectrum based on the programme path, the specific steps are 1031- step 1034 institutes
Show:
Step 1031: according to the speed, the revolving speed, the torque, the power, the gear and the oil spout
Amount setting interpretational criteria number.
The interpretational criteria number is provided that road condition criterion numeral statistics can be compiled based on the Matlab on host computer
Cheng Shixian by the point of extraction objective function, length, the ratio of data point, then is integrated.The corresponding four kinds of load of every kind of road conditions, two
Group acquisition data, amount to 32 groups of interpretational criteria numbers.For example, it may include four kinds of load that vehicle, which is in different loads state: unloaded,
Fully loaded, 75% load, 50% load, the corresponding four kinds of load of every kind of road conditions, as shown in figure 3, being that vehicle is in fully loaded and 75% carries
Speed criterion numeral statistical chart when lotus.
Step 1032: the interpretational criteria number being subjected to short stroke segmentation and obtains target short stroke with screening.
Short stroke is between being started with idling operation (operating condition when speed is a 0km/h) end to next idling operation
Travel speed section.The screening of short stroke is mainly according to the length of short stroke and the velocity amplitude range of short stroke.To extraction
Effective short stroke be combined, and seek related coefficient with sample road totality operating condition, related coefficient is greater than setting coefficient (ratio
Such as, set coefficient as 0.95) be sample representation road running mode, i.e. target short stroke.
Step 1033: the target short stroke being carried out by selection and combination according to C-WTVC state of cyclic operation, obtains primary row
Journey operating condition.
Specifically, the length of objectives Primary driving cycle is determined as 1800s according to C-WTVC state of cyclic operation curve, then root
Selection and combination are carried out to target short stroke according to interpretational criteria number, road running mode length factor, finally combination is obtained
Primary driving cycle.Further, addition idling operation, gear obtain target road spectrum in primary driving cycle, are as shown in Figure 4
A kind of statistical chart that target road is composed in the embodiment of the present invention.Fig. 4 is for the target of speed, gear, the gradient under different road conditions
Lu Pu.
Step 1034: idling operation is added in the primary driving cycle, gear obtains the target road and composes.
Specifically, the target road spectrum can have 16, and 16 target roads spectrum is carried out by 32 groups of interpretational criteria numbers
Fitting obtains.
Step 104: terminating.
Acquisition method is composed on road provided by the invention, when the hair that test vehicle is when programme path is run, and analysis obtains in real time
The information of motivation controller, the information of attitude transducer, the information of the information of GPS and fuel consumption meter, obtain based on the planning
The target road of route is composed and the first oil consumption, by the invention it is possible to accurately and comprehensively realize the acquisition of road spectrum.
In order to preferably verify the accuracy of target road spectrum, in another embodiment of the invention, the method includes with
Lower step:
Step 200: starting.
Step 201: according to test vehicle vehicle programme path.
Specifically, the programme path may include: four kinds of city, town and country, hill path and high speed road conditions.
It is described according to test vehicle vehicle programme path include: according to the vehicle of the test vehicle, be four kinds of roads
Different length is arranged in condition.
Step 202: when the test vehicle is run by the programme path, obtaining CAN message collector in real time and send
The information of engine controller, the information of attitude transducer, the information of the information of GPS and fuel consumption meter.
Specifically, the information of the engine controller include: the wheel speed of the test vehicle, revolving speed, torque, power,
Gear and distributive value；The information of the attitude transducer includes: the body gesture and acceleration of the test vehicle；It is described
The information of GPS includes: the wheelpath and speed of the test vehicle；The information of the fuel consumption meter includes: first oil
Consumption.
Step 203: analyzing all information, obtain target road spectrum and the first oil consumption based on the programme path.
Specifically, all information are analyzed, obtaining the target road spectrum based on the programme path is specially step 2031- step
2034:
Step 2031: according to the speed, the revolving speed, the torque, the power, the gear and the oil spout
Amount setting interpretational criteria number.
Step 2032: the interpretational criteria number being subjected to short stroke segmentation and obtains target short stroke with screening.
Step 2033: the target short stroke being carried out by selection and combination according to C-WTVC state of cyclic operation, obtains primary row
Journey operating condition.
Step 2034: idling operation is added in the primary driving cycle, gear obtains the target road and composes.
Step 204: the test vehicle being placed in rotating hub, and it is actual for simulating to be located at the test vehicle
In the environmental chamber of external environment.
Step 205: the rotating hub being controlled according to target road spectrum and is run.
Step 206: obtaining the second oil consumption from the fuel consumption meter after the rotating hub has been run.
Step 207: within the set range whether the difference of detection second oil consumption and first oil consumption；If so, holding
Row step 208；Otherwise, step 210 is executed.
Specifically, setting range can be determined according to actual tests vehicle calibration, for example, setting range is ± 5%, for
16 target roads spectrum that 32 sample numbers obtain, separate loading, branch condition carry out rotating hub verifying, hundred kilometers of oil of every target road spectrum
It consumes control errors to compose 16 target roads within ± 5%, then through the interpretational criteria number of test, is fitted to four according to load
Item.Test process is accelerated excessive to cannot achieve that test vehicle follows, the gradient is excessively steep, cannot achieve the songs such as smooth shift
Line, optimizes fitting, and a not separate loading finally may be implemented, may include the gradient, gear, city, outskirts of a town, high speed, mountain
The typical commercial bus or train route spectrum on road.
Step 208: determining that the target road spectrum is qualified.
Step 209: terminating.
Step 210: readjusting the target road spectrum until the difference of second oil consumption and first oil consumption is being set
Until in range, step 209 is executed.
In conclusion road spectrum acquisition system provided in an embodiment of the present invention and method, are planned according to instruction carriage vehicle
Route obtains programme path by statistical；According to engine controller information, the information of attitude transducer, fuel consumption meter
Information and GPS information, analysis obtain target road spectrum and the first oil consumption, to obtain based on the typical of programme path
Driving pattern operating condition；It further, can be by real road oil consumption and rack oil consumption by engine bench tests such as rotating hub, environmental chambers
Measurement error controls within the set range.Through the invention, the acquisition of road spectrum is accurately and comprehensively realized.
The embodiment of the present invention has been described in detail above, and specific embodiment used herein carries out the present invention
It illustrates, the above embodiments are only used to help understand system and method for the invention；Meanwhile for the one of this field
As technical staff, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, to sum up institute
It states, the contents of this specification are not to be construed as limiting the invention.
Claims (8)
1. acquisition system is composed on a kind of road, the system comprises: test vehicle and the engine control on the test vehicle
Device processed, which is characterized in that connect the system also includes: CAN message collector and respectively with the CAN message collector
Fuel consumption meter, attitude transducer, GPS, host computer, the fuel consumption meter, the attitude transducer, the GPS are arranged in the test
On vehicle, the engine controller is connect with the CAN message collector, according to the test vehicle vehicle programme path,
When the test vehicle is run by the programme path, the host computer obtains what the CAN message collector was sent in real time
The information of the engine controller, the information of the attitude transducer, the information of the GPS and the fuel consumption meter letter
Breath, and all information are analyzed, obtain target road spectrum and the first oil consumption based on the programme path；
The programme path includes: four kinds of city, town and country, hill path and high speed road conditions, plans road according to the test vehicle vehicle
Line are as follows: different length is arranged for four kinds of road conditions according to the vehicle of the test vehicle；The host computer is at test vehicle
When different loads state, the wheel of the test vehicle is obtained from the engine controller by the CAN message collector
Speed, revolving speed, torque, power, gear and distributive value obtain the wheelpath and speed of the test vehicle from the GPS,
The body gesture and acceleration that the test vehicle is obtained from the attitude transducer obtain the test from the fuel consumption meter
First oil consumption of vehicle；The host computer analyzes all information and obtains the process of the target road spectrum are as follows: according to the speed, institute
Revolving speed, the torque, the power, the gear and distributive value setting interpretational criteria number are stated, by the interpretational criteria
Number carries out short stroke segmentation and obtains target short stroke with screening, is selected the target short stroke according to C-WTVC state of cyclic operation
It selects and combines, obtain primary driving cycle, idling operation is added in the primary driving cycle, gear obtains the target road
Spectrum.
2. acquisition system is composed on road according to claim 1, which is characterized in that the system also includes: it is connected to the oil
The first converter between instrument and the CAN message collector is consumed, what first converter was used to export the fuel consumption meter
Pulse is converted into CAN message data and exports to the CAN message collector.
3. acquisition system is composed on road according to claim 2, which is characterized in that the system also includes: it is connected to the appearance
The second converter between state sensor and the CAN message collector, second converter is for sensing the posture
The Serial Port Information of device output is converted into CAN message data and exports to the CAN message collector.
4. acquisition system is composed on road according to claim 3, which is characterized in that the system also includes:
The environmental chamber that is connect respectively with the host computer, rotating hub；Obtaining target road spectrum and the oil based on the programme path
After consumption, the test vehicle is placed in the rotating hub, and is located at the test vehicle for simulating actual external rings
In the environmental chamber in border, the host computer controls the rotating hub according to target road spectrum and runs, and adopts after rotating hub operation
Collect the second oil consumption of the fuel consumption meter, whether the difference of the second oil consumption described in the upper computer detection and first oil consumption is setting
In range, if it is, target road spectrum is qualified；Otherwise, the target road spectrum is readjusted.
5. acquisition system is composed on road according to claim 4, which is characterized in that the fuel consumption meter include: respectively with it is described on
The first fuel consumption meter and the second fuel consumption meter of position machine connection；First fuel consumption meter is mounted in the oil inlet pipe of the test vehicle,
Second fuel consumption meter is mounted in the oil return pipe of the test vehicle.
6. acquisition method is composed on a kind of road, which is characterized in that the described method includes:
According to test vehicle vehicle programme path；
When the test vehicle is run by the programme path, the engine control that CAN message collector is sent is obtained in real time
The information of device, the information of attitude transducer, the information of the information of GPS and fuel consumption meter；
All information are analyzed, target road spectrum and the first oil consumption based on the programme path are obtained；
It is described real-time to obtain the information of engine controller that CAN message collector sends, the information of attitude transducer, GPS
Information and the information of fuel consumption meter include:
The information of the engine controller includes: wheel speed, revolving speed, torque, power, gear and the oil spout of the test vehicle
Amount；The information of the attitude transducer includes: the body gesture and acceleration of the test vehicle；The packet of the GPS
It includes: the wheelpath and speed of the test vehicle；The information of the fuel consumption meter includes: first oil consumption；
All information are analyzed, obtaining the target road spectrum based on the programme path includes: according to the speed, the revolving speed, institute
State torque, the power, the gear and distributive value setting interpretational criteria number；
The interpretational criteria number is subjected to short stroke segmentation and obtains target short stroke with screening；
The target short stroke is subjected to selection and combination according to C-WTVC state of cyclic operation, obtains primary stroke operating condition；
Idling operation is added in the primary driving cycle, gear obtains the target road and composes.
7. acquisition method is composed on road according to claim 6, which is characterized in that the programme path include: city, town and country,
The four kinds of road conditions in hill path and high speed；
Described according to test vehicle vehicle programme path includes: to be set according to the vehicle of the test vehicle for four kinds of road conditions
Set different length.
8. acquisition method is composed on road according to claim 6, which is characterized in that the method also includes:
The target road spectrum is obtained with after oil consumption, the test vehicle is placed in rotating hub, and be located at the test vehicle
In environmental chamber for simulating actual external environment；
The rotating hub operation is controlled according to target road spectrum；
And the second oil consumption is obtained from the fuel consumption meter after the rotating hub has been run；
Whether within the set range the difference of second oil consumption and first oil consumption is detected, if it is, determining the target
Road spectrum is qualified；Otherwise, the target road spectrum is readjusted, until the difference of second oil consumption and first oil consumption is in setting model
Until in enclosing.
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| CN110310475B (en) * | 2019-04-23 | 2022-05-10 | 同济大学 | Method and equipment for collecting and processing vehicle running condition |
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| CN110987441A (en) * | 2019-12-24 | 2020-04-10 | 天津雷沃发动机有限公司 | Road spectrum circulation working condition method for engine of harvesting machine |
| CN111785012B (en) * | 2020-04-27 | 2022-02-11 | 南斗六星系统集成有限公司 | Energy consumption road spectrum analysis method for vehicle cloud cooperative computing |
| CN112185114B (en) * | 2020-09-28 | 2021-12-17 | 湖南行必达网联科技有限公司 | Road spectrum data acquisition method and device, electronic equipment and storage medium |
| CN112557059B (en) * | 2020-12-15 | 2023-01-06 | 潍柴动力股份有限公司 | Gradient acquisition system and method and vehicle |
| CN113092131B (en) * | 2021-03-31 | 2023-10-27 | 泰明顿摩擦材料技术(上海)有限公司 | Brake system bench test system and method based on whole vehicle brake working condition |
| CN113836635B (en) * | 2021-08-31 | 2023-06-16 | 东风商用车有限公司 | Road spectrum automatic identification method based on passive oil mass distribution calculation inflection point |
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| JP2011232128A (en) * | 2010-04-27 | 2011-11-17 | Toyota Motor Corp | Road gradient measurement device and road gradient measurement method |
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