CN106846800A - A kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system - Google Patents
A kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system Download PDFInfo
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- CN106846800A CN106846800A CN201710064042.5A CN201710064042A CN106846800A CN 106846800 A CN106846800 A CN 106846800A CN 201710064042 A CN201710064042 A CN 201710064042A CN 106846800 A CN106846800 A CN 106846800A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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Abstract
The invention discloses a kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system, including step:The linear pile No. data in section will be measured and the corresponding altitude data of pile No. will be loaded into vehicle-mounted industrial computer;The initial pile No. for surveying section is input into by vehicle-mounted industrial computer, while reading the altitude data in gps receiver and being input to vehicle-mounted industrial computer;Road test vehicle longitudinal acceleration signal collector, counter, gps receiver are operated, and related data is automatically entered into vehicle-mounted industrial computer;The terminal pile No. for surveying section is input into by vehicle-mounted industrial computer, while reading the altitude data in gps receiver and being input to vehicle-mounted industrial computer;Vehicle-mounted industrial computer calls the data in the Data Analysis Services module the being internally integrated vehicle-mounted industrial computer disk of reading and the data to being read are analyzed after processing, and draws analysis processing result.Data-handling efficiency of the present invention is high, efficiently reduces human error, and the data accuracy for drawing is high, uses manpower and material resources sparingly.
Description
The application is divisional application, the application number of original application:2015101995952, the applying date:2015-04-24, invention
Patent name:A kind of data processing method of mountainous area highway actual road test signal detection system.
Technical field
The present invention relates to data acquisition process technical field, more particularly to a kind of mountainous area highway road test vehicle
The data processing method of longitudinal acceleration signal detecting system.
Background technology
With economic development in an all-round way at full speed, the expressway construction of China achieves achievement well.China's geography ring
Border is extremely enriched, and in order to accelerate the traffic route of connection different zones, China has built many mountainous area highways.Mountain area is high
Fast highway road environment is complicated, Frequent Accidents, and the scientific research personnel of China will often do some actual road tests, gather related data,
Ground road data research highway safety evaluation, speed feature, the adaptive cruise based on road alignment etc. is carried out
In studying carefully, often experiment is acquired to signals such as speed, acceleration, the vehicle lateral accelerations of road vehicle traveling, with
To signal of the vehicle in the travel corresponding to road alignment pile No., i.e., it is to be understood that vehicle correspondence pile No. in road alignment
Every bit signal.Coherent signal of the vehicle at a certain pile No. position of road alignment is specified to have very important significance.
Current existing actual road test acquisition mode can collect associated vehicle signal and the warp corresponding to the signal
Degree, latitude and elevation, but be difficult for the positional informations such as the longitude corresponding to the coherent signal of collection, latitude to correspond to road alignment
Pile No. on, not display road pile No. this project in its data output project.After prior art is gathered data, enter
Row artificial treatment, is corresponded in the linear pile No. of related roads using positional information manual modes such as the longitudes and latitude for gathering,
Not only the degree of accuracy is not high for such mode, and the efficiency of data processing is very low, while when mountainous area highway tunnel is gathered
Due to the loss of gps signal, it is impossible to obtain the position signallings such as longitude and latitude in tunnel, the missing of data acquisition will be caused, after giving
Phase research brings greatly puzzlement.Generally speaking, the road test vehicle longitudinal acceleration signal that prior art is gathered,
It is that the signal just gathered using longitude and latitude information is mapped, it is rarely seen that correspondence is carried out with road pile No. information.
Mountainous area highway differs markedly from Expressway in Plain, with some outstanding features, the drop of its height
Very big, such as the highway in Xi'an to Hanzhong, its elevation drop has reached more than 1,000 meters.It is larger for this class elevation drop
Mountainous area highway, we generally only need to know the elevation of certain point on road, just can easily obtain elevation institute right
The road pile No. answered.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is vertical the invention provides a kind of mountainous area highway road test vehicle
To the data processing method of acceleration signal detecting system, the method from elevation and road pile No. can corresponding relation, can
Corresponded with the road test vehicle longitudinal acceleration signal data and road pile No. data that will conveniently be gathered
Come, while the present invention can be solved in collection mountainous area highway tunnel inner road test vehicle longitudinal acceleration signal well
When, because when later data is processed caused by the missing of gps signal, there is discontinuity in data.Present invention design is closed
Reason, using easy to operate, intelligence degree is high, and data acquisition and treatment effeciency are high, and data accuracy is high, use manpower and material resources sparingly,
It is practical, it is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the present invention is:
A kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system, the system bag
Include road test vehicle longitudinal acceleration signal collector, counter, gps receiver and vehicle-mounted industrial computer;Described road the examination of road
Longitudinal acceleration signal collector, counter, a gps receiver validate the car respectively with vehicle-mounted industrial computer by data telecommunication line or nothing
Line communication network carries out wired connection or wireless connection;Described road test vehicle longitudinal acceleration signal collector is used to adopt
Collect the different kinds of roads test vehicle longitudinal acceleration signal for needing, road test vehicle longitudinal acceleration signal collector can be gathered
A kind of signal or multi-signal, can be configured as needed;Described counter longitudinally adds for counting road test vehicle
The signal group number that rate signal collector is gathered, is easy to the later stage to be calculated;Described gps receiver is used to receive number of passes high
According to;Described vehicle-mounted industrial computer its be internally integrated Data Analysis Services module;Implementation step is as follows:
Before step one, measurement, the linear pile No. data in section will be measured and be loaded into the disk of vehicle-mounted industrial computer, described section
Linear pile No. data include the pile No. data corresponding to the altitude data and elevation in the measurement section;
When step 2, measurement, the parameter set unit of vehicle-mounted industrial computer recalls the corresponding data initialization of data initialization module
Interface, while reading the initial altitude data in gps receiver, and is input into detection section by the data initialization interface
Initial altitude data in beginning pile No. data and gps receiver, the initial pile No. data that the data initialization module will be input into
Stored in the corresponding data storage disk of vehicle-mounted industrial computer with the initial altitude data in gps receiver;
Step 3, in the measurements, road test vehicle longitudinal acceleration signal collector, gps receiver and counter synchronisation are entered
Row work, the road test vehicle longitudinal acceleration signal data that road test vehicle longitudinal acceleration signal collector will be surveyed
It is input in the corresponding data storage disk of vehicle-mounted industrial computer;Gps receiver synchronous acquisition positional information, and will be gathered
Altitude data is input in the corresponding data storage disk of vehicle-mounted industrial computer;Counter starts synchronous counting, counts road the examination of road
Simultaneously be input to statistics in the corresponding data storage disk of industrial computer by a number of longitudinal acceleration signal data of validating the car;
After vehicle enters tunnel, although gps receiver loses signal, but road test vehicle longitudinal acceleration signal collector and meter
Number device can proceed data acquisition, and counter continues to keep the system to road test vehicle longitudinal acceleration signal data
Meter;
Step 4, at the end of measurement, corresponding data interface is recalled by the parameter set unit of vehicle-mounted industrial computer, at the same read
Take the altitude data in gps receiver, and by the data interface be input into detection terminate to terminate pile No. data at section and
Altitude data in gps receiver;
Step 5, vehicle-mounted industrial computer read the number in vehicle-mounted industrial computer disk by its Data Analysis Services module being internally integrated
After being analyzed treatment according to and to the data that are read, analysis processing result is drawn.
A kind of data processing side of above-mentioned mountainous area highway road test vehicle longitudinal acceleration signal detecting system
Method, it is characterised in that:Vehicle-mounted industrial computer magnetic is read by its Data Analysis Services module being internally integrated described in step 5
Data in the disk and data to being read are analyzed treatment, its analyzing and processing process is comprised the following steps:
Step 501, described data analysis module are by the height in speed data collection signal, gps receiver in vehicle-mounted industrial computer disk
The enumeration data of journey signal and counters count is arranged successively according to the sequencing of collection respectively, described arrangement mode
For N rows M is arranged;The N is the counting number of counter, and the M row road test vehicle that the M is classified as N correspondence statistics longitudinally accelerates
Degree signal;
Step 502, described data analysis module call the starting measurement section pile No. A after arranging in vehicle-mounted industrial computer disk
Pile No. B is measured with terminal, and pile No. is converted, pile No. is scaled distance, pile No. A is obtained after conversion corresponding apart from a
It is corresponding with pile No. B apart from b, reduction formula is:
a=A×1000;
b=B×1000;
Step 503, described data analysis module calculate collection apart from c, and computing formula is:c=a-b;
Step 504, described data analysis module call the counter statistics N stored in vehicle-mounted industrial computer disk, and count
Calculate speed acquisition distance increment △1, computing formula is:△1=c/N;
Step 505, described data analysis module call speed acquisition distance increment △1And calculate the cumulative coefficient △ of pile No.2, meter
Calculating formula is:△2= △1×0.001;
Step 506, described data analysis module call starting measurement section pile No. A and the meter stored in vehicle-mounted industrial computer disk
The road test vehicle longitudinal acceleration signal collection signal number N of number device statistics, and the road test vehicle longitudinal direction that will be gathered
Acceleration signal data and pile No. carry out correspondence, and computational methods are:1st group of M row road test vehicles longitudinal direction of counters count
Section pile No. corresponding to acceleration signal is A;Section corresponding to 2nd group of M row road test vehicle longitudinal acceleration signal
Pile No. is A2=A+△2;Section pile No. corresponding to 3rd group of M row road test vehicle longitudinal acceleration signal of counters count
It is A3=A+2×△2;Section pile No. corresponding to 4th group of M row road test vehicle longitudinal acceleration signal of counters count is
A4=A+3×△2, calculated successively, corresponding to the N group M row road test vehicle longitudinal acceleration signals of counters count
Section pile No. be AN=A+(N-1)×△2;
2 to the A that step 507, described data analysis module will be calculated in step 506NCommon N groups pile No. data are according to the elder generation for calculating
Order is arranged successively afterwards, and is mapped with the M row road test vehicle longitudinal acceleration signals described in step 501.
A kind of data processing side of above-mentioned mountainous area highway road test vehicle longitudinal acceleration signal detecting system
Method, it is characterised in that:The computational methods of step 506 can be replaced:Described data analysis module calls vehicle-mounted industrial computer disk
The terminal measurement section pile No. B of middle storage and the road test vehicle longitudinal acceleration signal collection signal number of counters count
N, and the road test vehicle longitudinal acceleration signal data and pile No. of collection are carried out into correspondence, computational methods are:Counter is united
Section pile No. corresponding to 1st group of M row road test vehicle longitudinal acceleration signal of meter is A1=B-(N-1)×△2;Counter
Section pile No. corresponding to 2nd group of M row road test vehicle longitudinal acceleration signal of statistics is A2=B-(N-2)×△2;Count
Section pile No. corresponding to 3rd group of M row road test vehicle longitudinal acceleration signal of device statistics is A3=B-(N-3)×△2, according to
Secondary to be calculated, the section pile No. corresponding to the N-3 group M row road test vehicle longitudinal acceleration signals of counters count is
AN-3=B-3×△2;Section pile No. corresponding to the N-2 group M row road test vehicle longitudinal acceleration signals of counters count
It is AN-2=B-2×△2;Section stake corresponding to the N-1 group M row road test vehicle longitudinal acceleration signals of counters count
Number be AN-1=B-1×△2;Section stake corresponding to the N group M row road test vehicle longitudinal acceleration signals of counters count
Number be AN=B。
A kind of data processing side of above-mentioned mountainous area highway road test vehicle longitudinal acceleration signal detecting system
Method, it is characterised in that:Described road test vehicle longitudinal acceleration signal collector can gather one or more experiment letter
Number, including GES, longitudinal direction of car acceleration signal, vehicle lateral acceleration signal, yaw rate signal, clutch
Testing position signal residing for the vehicle such as device pedal opening signal coherent signal and vehicle.
A kind of data processing side of above-mentioned mountainous area highway road test vehicle longitudinal acceleration signal detecting system
Method, it is characterised in that:This method can be not only used for mountainous area highway, can be also used for other road gradient drops larger
Highway.
Compared with prior art, the beneficial effects of the invention are as follows:
1st, the present invention from elevation and road pile No. can corresponding relation, the actual road test that will conveniently can be gathered
Longitudinal direction of car acceleration signal data and road pile No. data correspond.Can directly obtain what is marked with road pile No.
Road test vehicle longitudinal acceleration signal, you can to know each group of measured road test vehicle longitudinal acceleration signal
It is corresponding in pile No. at which, this just brings numerous benefits, for example can be directly with pile No. as abscissa, with the road surveyed
Road test vehicle longitudinal acceleration signal is drawn for ordinate, greatly facilitates the later stage research of data.And prior art
The latitude and longitude information that measured road test vehicle longitudinal acceleration signal is surveyed is only gived, can not be directly obtained and be surveyed
The corresponding pile No. of road test vehicle longitudinal acceleration signal.
2nd, prior art passes through after the road test vehicle longitudinal acceleration signal and its corresponding longitude and latitude surveyed
The mode of artificial treatment is carried out, and the present invention can directly obtain required result.
3rd, when vehicle enter tunnel or other temporarily without the section of gps signal, just can not obtain the position data having, and
The method that the present invention is taken only needs to know the pile No. and corresponding elevation before and after measurement section, the calculation being internally integrated using it
Method just can be calculated, particularly after vehicle enters tunnel, road test vehicle longitudinal acceleration signal collector and counting
Device remains on work, and the Data Analysis Services module and algorithm that vehicle-mounted industrial computer is internally integrated will can be gathered after experiment
Road test vehicle longitudinal acceleration signal and road pile No. correspond get up.
4th, the present invention can realize paperless work, and data acquisition and treatment effeciency are high, efficiently reduce human error,
Record, store and analyze the data accuracy for drawing high, use manpower and material resources sparingly.
5th, the present invention is reasonable in design, realizes that convenient and cost of implementation is low.
6th, the present invention is not only applicable to mountainous area highway, applies also for other highways.
7th, road test vehicle longitudinal acceleration signal collector of the invention can gather one or more stimulus,
Including GES, longitudinal direction of car acceleration signal, vehicle lateral acceleration signal, yaw rate signal, clutch
Testing position signal residing for the vehicle such as pedal opening signal coherent signal and vehicle.
8th, in the present invention system connected mode can using data telecommunication line or cordless communication network carry out wired connection or
Wireless connection, flexible and convenient to use, Scalable Performance is good.
9th, when without gps signal, the present invention has good adaptability.
In sum, the present invention is reasonable in design, and using easy to operate, intelligence degree is high, data acquisition and treatment effeciency
Height, data accuracy is high, uses manpower and material resources sparingly, and realizes that convenient and cost of implementation is low, practical, can effectively solve prior art
Defect and the deficiency such as existing data acquisition efficiency is low, data accuracy is poor, waste time and energy, using effect are good, are easy to promote
Use.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
A kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system, this is
System includes road test vehicle longitudinal acceleration signal collector, counter, gps receiver and vehicle-mounted industrial computer;Described road
Road test vehicle longitudinal acceleration signal collector, counter, gps receiver pass through data telecommunication line with vehicle-mounted industrial computer respectively
Or cordless communication network carries out wired connection or wireless connection;Described road test vehicle longitudinal acceleration signal collector is used
In the different kinds of roads test vehicle longitudinal acceleration signal that collection needs, road test vehicle longitudinal acceleration signal collector can
A kind of signal or multi-signal are gathered, can be configured as needed;Described counter is indulged for counting road test vehicle
The signal group number gathered to acceleration signal collector, is easy to the later stage to be calculated;Described gps receiver is used to receive height
Number of passes evidence;Described vehicle-mounted industrial computer its be internally integrated Data Analysis Services module.
The data acquiring frequency that road test vehicle longitudinal acceleration signal collector is set is bigger, the data letter of its collection
Number group number can be more, and the data acquisition number of counters count is also more, and the corresponding road pile No. of the signal for being gathered also can be more
It is many.
A kind of data of the mountainous area highway road test vehicle longitudinal acceleration signal detecting system as shown in Fig. 1
Processing method, comprises the following steps:
Before step one, measurement, the linear pile No. data in section will be measured and be loaded into the disk of vehicle-mounted industrial computer, described section
Linear pile No. data include the pile No. data corresponding to the altitude data and elevation in the measurement section;
When step 2, measurement, the parameter set unit of vehicle-mounted industrial computer recalls the corresponding data initialization of data initialization module
Interface, while reading the initial altitude data in gps receiver, and is input into detection section by the data initialization interface
Initial altitude data in beginning pile No. data and gps receiver, the initial pile No. data that the data initialization module will be input into
Stored in the corresponding data storage disk of vehicle-mounted industrial computer with the initial altitude data in gps receiver;
When implementing, in the data input screen correspondence position input detection section starting pile No. of vehicle-mounted industrial computer, while reading
Take the initial elevation in currently starting detection section gps receiver and the data input screen in vehicle-mounted industrial computer is input into current height
Journey.
Step 3, in the measurements, road test vehicle longitudinal acceleration signal collector, gps receiver and counter are same
Step is operated, the road test vehicle longitudinal acceleration signal that road test vehicle longitudinal acceleration signal collector will be surveyed
Data input is in the corresponding data storage disk of vehicle-mounted industrial computer;Gps receiver synchronous acquisition positional information, and will be adopted
The altitude data of collection is input in the corresponding data storage disk of vehicle-mounted industrial computer;Counter starts synchronous counting, counts road
Statistics is simultaneously input to the corresponding data storage magnetic of industrial computer by the number of road test vehicle longitudinal acceleration signal data
In disk;After vehicle enters tunnel, although gps receiver loses signal, but road test vehicle longitudinal acceleration signal is gathered
Device and counter can proceed data acquisition, and counter continues to keep to road test vehicle longitudinal acceleration signal data
Statistics;
Step 4, at the end of measurement, corresponding data interface is recalled by the parameter set unit of vehicle-mounted industrial computer, at the same read
Take the altitude data in gps receiver, and by the data interface be input into detection terminate to terminate pile No. data at section and
Altitude data in gps receiver;
When implementing, read the elevation in the gps receiver of measurement end point determination section and be input to vehicle-mounted industrial computer, while to
The pile No. in vehicle-mounted industry control input measurement terminal section.
Step 5, vehicle-mounted industrial computer are read in vehicle-mounted industrial computer disk by its Data Analysis Services module being internally integrated
Data and the data to being read be analyzed treatment after, draw analysis processing result.
In the present embodiment, vehicle-mounted industry control is read by its Data Analysis Services module being internally integrated described in step 5
Data in the machine disk and data to being read are analyzed treatment, its analyzing and processing process is comprised the following steps:
Step 501, described data analysis module are by the height in speed data collection signal, gps receiver in vehicle-mounted industrial computer disk
The enumeration data of journey signal and counters count is arranged successively according to the sequencing of collection respectively, described arrangement mode
For N rows M is arranged;The N is the counting number of counter, and the M row road test vehicle that the M is classified as N correspondence statistics longitudinally accelerates
Degree signal;
When implementing, two signals are gathered with road test vehicle longitudinal acceleration signal collector(GES, vehicle are indulged
To acceleration signal)As a example by illustrate, such as road test vehicle longitudinal acceleration signal collector acquires 10 groups of speeds letter
Number and longitudinal direction of car acceleration signal, then rolling counters forward 10 times, i.e. N=10, M=2, at this moment the arrangement mode of data be 10 rows
2 row, first is classified as GES, and second is classified as longitudinal direction of car acceleration signal.
Step 502, described data analysis module call the starting measurement section after arranging in vehicle-mounted industrial computer disk
Pile No. A and terminal measurement pile No. B, and pile No. is converted, pile No. is scaled distance, pile No. A is obtained after conversion corresponding
Corresponding apart from b apart from a and pile No. B, reduction formula is:
a=A×1000;
b=B×1000;
When implementing, it is just 1137500 apart from a that such as starting is measured after section pile No. A converts for K1137+500;Terminal is surveyed
After pile No. B is measured for K1135+500 conversions is just 1135500 apart from b.
Step 503, described data analysis module calculate collection apart from c, and computing formula is:c=a-b;
When implementing, according to the example above, starting measurement section pile No. A is just to be apart from a after K1137+500 converts
1137500;It is just 1135500 apart from b that terminal is measured after pile No. B converts for K1135+500, then c=a-b=1137500-
1135500=2000。
Step 504, described data analysis module call the counter statistics N stored in vehicle-mounted industrial computer disk,
And calculating speed collection distance increment △1, computing formula is:△1=c/N;
When implementing, according to the example above, △1=c/N=2000/10=200。
Step 505, described data analysis module call speed acquisition distance increment △1And calculate the cumulative coefficient of pile No.
△2, computing formula is:△2= △1×0.001;
When implementing, according to the example above, △2= △1×0.001=200×0.001=0.2。
Step 506, described data analysis module call the initial measurement section pile No. A stored in vehicle-mounted industrial computer disk
Signal number N, and the road test vehicle that will be gathered are gathered with the road test vehicle longitudinal acceleration signal of counters count
Longitudinal acceleration signal data and pile No. carry out correspondence, and computational methods are:1st group of M row road test vehicle of counters count
Section pile No. corresponding to longitudinal acceleration signal is A;Corresponding to 2nd group of M row road test vehicle longitudinal acceleration signal
Section pile No. is A2=A+△2;Section corresponding to 3rd group of M row road test vehicle longitudinal acceleration signal of counters count
Pile No. is A3=A+2×△2;Section stake corresponding to 4th group of M row road test vehicle longitudinal acceleration signal of counters count
Number be A4=A+3×△2, calculated successively, the N group M row road test vehicle longitudinal acceleration signals institute of counters count
Corresponding section pile No. is AN=A+(N-1)×△2;
When implementing, according to the example above, the 1st group of M row road test vehicle longitudinal acceleration signals institute of counters count
Corresponding section pile No. is K1137+500;The 2nd group of M row road test vehicles longitudinal acceleration signal institute of counters count is right
The section pile No. answered is A2=1137.500+△2The 2nd group of M row road of=1137.500+0.2=1137.700, i.e. counters count
Section pile No. corresponding to test vehicle longitudinal acceleration signal is K1137+700, can be calculated successively.
2 to the A that step 507, described data analysis module will be calculated in step 506NCommon N groups pile No. data are according to calculating
Sequencing arranged successively, and it is corresponding with the M row road test vehicle longitudinal acceleration signals described in step 501 rise
Come.
When implementing, the computational methods of step 506 can be replaced:Described data analysis module calls vehicle-mounted industrial computer magnetic
The terminal measurement section pile No. B and the road test vehicle longitudinal acceleration signal collection signal of counters count stored in disk
Number N, and the road test vehicle longitudinal acceleration signal data and pile No. of collection are carried out into correspondence, computational methods are:Counter
Section pile No. corresponding to 1st group of M row road test vehicle longitudinal acceleration signal of statistics is A1=B-(N-1)×△2;Count
Section pile No. corresponding to 2nd group of M row road test vehicle longitudinal acceleration signal of device statistics is A2=B-(N-2)×△2;Meter
Section pile No. corresponding to 3rd group of M row road test vehicle longitudinal acceleration signal of number device statistics is A3=B-(N-3)×△2,
Calculated successively, the section pile No. corresponding to the N-3 group M row road test vehicle longitudinal acceleration signals of counters count
It is AN-3=B-3×△2;Section stake corresponding to the N-2 group M row road test vehicle longitudinal acceleration signals of counters count
Number be AN-2=B-2×△2;Section corresponding to the N-1 group M row road test vehicle longitudinal acceleration signals of counters count
Pile No. is AN-1=B-1×△2;Section corresponding to the N group M row road test vehicle longitudinal acceleration signals of counters count
Pile No. is AN=B。
This method can be not only used for mountainous area highway, can be also used for the larger public affairs of other road gradient drops
Road.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (1)
1. a kind of data processing method of mountainous area highway road test vehicle longitudinal acceleration signal detecting system, its feature
It is that the system includes road test vehicle longitudinal acceleration signal collector, counter, gps receiver and vehicle-mounted industrial computer;
Described road test vehicle longitudinal acceleration signal collector, counter, gps receiver is respectively with vehicle-mounted industrial computer by number
Wired connection or wireless connection are carried out according to order wire or cordless communication network;Described road test vehicle longitudinal acceleration signal
Collector is used to gather road test vehicle longitudinal acceleration signal;Described counter is used to count road test vehicle longitudinal direction
The signal group number that acceleration signal collector is gathered, is easy to the later stage to be calculated;Described gps receiver is used to receive elevation
Data;Described vehicle-mounted industrial computer its be internally integrated Data Analysis Services module;Implementation step is as follows:
Before step one, measurement, the linear pile No. data in section will be measured and be loaded into the disk of vehicle-mounted industrial computer, described section
Linear pile No. data include the pile No. data corresponding to the altitude data and elevation in the measurement section;
When step 2, measurement, the parameter set unit of vehicle-mounted industrial computer recalls the corresponding data initialization of data initialization module
Interface, while reading the initial altitude data in gps receiver, and is input into detection section by the data initialization interface
Initial altitude data in beginning pile No. data and gps receiver, the initial pile No. data that the data initialization module will be input into
Stored in the corresponding data storage disk of vehicle-mounted industrial computer with the initial altitude data in gps receiver;
Step 3, in the measurements, road test vehicle longitudinal acceleration signal collector, gps receiver and counter synchronisation are entered
Row work, the road test vehicle longitudinal acceleration signal data that road test vehicle longitudinal acceleration signal collector will be surveyed
It is input in the corresponding data storage disk of vehicle-mounted industrial computer;Gps receiver synchronous acquisition positional information, and will be gathered
Altitude data is input in the corresponding data storage disk of vehicle-mounted industrial computer;Counter starts synchronous counting, counts road the examination of road
Simultaneously be input to statistics in the corresponding data storage disk of industrial computer by a number of longitudinal acceleration signal data of validating the car;
After vehicle enters tunnel, although gps receiver loses signal, but road test vehicle longitudinal acceleration signal collector and meter
Number device can proceed data acquisition, and counter continues to keep the system to road test vehicle longitudinal acceleration signal data
Meter;
Step 4, at the end of measurement, corresponding data interface is recalled by the parameter set unit of vehicle-mounted industrial computer, at the same read
Take the altitude data in gps receiver, and by the data interface be input into detection terminate to terminate pile No. data at section and
Altitude data in gps receiver;
Step 5, vehicle-mounted industrial computer read the number in vehicle-mounted industrial computer disk by its Data Analysis Services module being internally integrated
After being analyzed treatment according to and to the data that are read, analysis processing result is drawn;
The data read by its Data Analysis Services module being internally integrated in vehicle-mounted industrial computer disk described in step 5
And the data to being read are analyzed treatment, its analyzing and processing process is comprised the following steps:
Step 501, described data analysis module are by the height in speed data collection signal, gps receiver in vehicle-mounted industrial computer disk
The enumeration data of journey signal and counters count is arranged successively according to the sequencing of collection respectively, described arrangement mode
For N rows M is arranged;The N is the counting number of counter, and the M row road test vehicle that the M is classified as N correspondence statistics longitudinally accelerates
Degree signal;
Step 502, described data analysis module call the starting measurement section pile No. A after arranging in vehicle-mounted industrial computer disk
Pile No. B is measured with terminal, and pile No. is converted, pile No. is scaled distance, pile No. A is obtained after conversion corresponding apart from a
It is corresponding with pile No. B apart from b, reduction formula is:
a=A×1000;
b=B×1000;
Step 503, described data analysis module calculate collection apart from c, and computing formula is:c=a-b;
Step 504, described data analysis module call the counter statistics N stored in vehicle-mounted industrial computer disk, and count
Calculate speed acquisition distance increment △1, computing formula is:△1=c/N;
Step 505, described data analysis module call speed acquisition distance increment △1And calculate the cumulative coefficient △ of pile No.2, meter
Calculating formula is:△2= △1×0.001;
Step 506, described data analysis module call starting measurement section pile No. A and the meter stored in vehicle-mounted industrial computer disk
The road test vehicle longitudinal acceleration signal collection signal number N of number device statistics, and the road test vehicle longitudinal direction that will be gathered
Acceleration signal data and pile No. carry out correspondence, and computational methods are:1st group of M row road test vehicles longitudinal direction of counters count
Section pile No. corresponding to acceleration signal is A;Section corresponding to 2nd group of M row road test vehicle longitudinal acceleration signal
Pile No. is A2=A+△2;Section pile No. corresponding to 3rd group of M row road test vehicle longitudinal acceleration signal of counters count
It is A3=A+2×△2;Section pile No. corresponding to 4th group of M row road test vehicle longitudinal acceleration signal of counters count is
A4=A+3×△2, calculated successively, corresponding to the N group M row road test vehicle longitudinal acceleration signals of counters count
Section pile No. be AN=A+(N-1)×△2;
Step 507, described data analysis module will be calculated in step 506 the 1st group is to ANGroup, common N groups pile No. data according to
The sequencing of calculating is arranged successively, and is believed with the N group M row road test vehicles longitudinal acceleration described in step 501
Number it is mapped.
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