CN109061316A - A kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method - Google Patents
A kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method Download PDFInfo
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- CN109061316A CN109061316A CN201810736652.XA CN201810736652A CN109061316A CN 109061316 A CN109061316 A CN 109061316A CN 201810736652 A CN201810736652 A CN 201810736652A CN 109061316 A CN109061316 A CN 109061316A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0835—Testing shielding, e.g. for efficiency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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- General Physics & Mathematics (AREA)
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- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method is related to rail traffic technical field of electromagnetic compatibility experimentation, this method chooses one section of straight track section and arranges a set of ground receiver control system, the positional symmetry for being L in distance test antenna two sides arranges a set of location aware sensing system, and at both ends, headstock drivers' cab is respectively arranged a set of vehicle load measurement and display system；Vehicle load measurement and display system obtain the velocity and acceleration of train in real time, realize the real-time communication of measured data and ground receiver control system, and guide driver to operate by display interface；Location aware sensing system provides the location information of train, the position that perception headstock reaches, and location information is informed vehicle load measurement and display system by unit by wireless communication；Ground receiver control system realizes that the measurement of experiment process setting and electromagnetic vehicle radiation and data are stored and shown.The method of the present invention realizes the dynamic test to each compartment, convenient for the diagnosis of electromagnetic radiation excessive problem.
Description
Technical field
The present invention relates to rail traffic technical field of electromagnetic compatibility experimentation, and in particular to a kind of rail vehicle electromagnetic radiation is more
Parameter cooperates with test method.
Background technique
Modern railway vehicle is integrated with the systems such as huge and complicated electrical, communication and signal, the electromagnetism spoke that vehicle generates
Penetrate be production-type test an important test corner.According to rail vehicle electromagnetic compatibility relevant criterion, tried in electromagnetic radiation
It needs to carry out vehicle the test of static and dynamic electromagnetic radiation in testing, whether the maximum electromagnetic radiation for judging that train generates according to this accords with
Standardization requirement.Static electromagnetic radiation test is carried out in the case where each compartment and static test antenna, and position is adjusted well
Whole, test is easier to carry out.And dynamic operation condition is that train completes electromagnetic radiation test in the process of running, it is desirable that the speed of train
Meet traction curve characteristic, the electromagnetic radiation at this moment generated is theoretical maximum value.
In order to ensure the accuracy of dynamic electromagnetic radiation test data, the test requirements document, when train reaches a certain to constant speed
When the ideal work condition state of angle value and acceleration value, the distance for the starting point for forming each section compartment relative to test
Value is retrievable known quantity.However, existing dynamic testing method can not provide the speed in each section compartment of train in real time
Value, acceleration value and the distance value relative to test initial position.
Currently, due to dynamic operation condition train speed and car position such as are difficult to match at factors, the dynamic test can not be for every
Compartment is saved to carry out, having the test method that qualified test mechanism is generally taken both at home and abroad is tested for entire train,
After headstock position is at the uniform velocity to pass through first test antenna lower than standard speed, is accelerated with the 1/3 of maximum drawbar pull, work as train
It when speed reaches standard requirements speed, travels at the uniform speed a period of time, then full service braking, ensures that permutation vehicle is completely logical as far as possible
Cross the last one test antenna.It is this to replace each section compartment independent speeds and positional number using the average value of vehicle speed and position
According to alternative average ratings test method train each compartment can not be tested, once occur electromagnetic radiation value be more than mark
It cannot achieve local positioning when quasi- limit value.Importantly, cannot ensure when train is accelerated with the 1/3 of maximum drawbar pull
The compartment for generating maximum electromagnetic radiation be able to test the position where antenna, when this occurs, tester by some
Member finds the problem without means, it is believed that test value is maximum value, and test result is recorded in test report.Therefore, on
Stating the test result of dynamic testing method, there are inaccuracies.
Summary of the invention
In order to solve existing for existing dynamic testing method because that can not provide the velocity amplitude of train each compartment in real time, accelerate
Angle value and relative to test initial position distance value, lead to not realize rail cars test, the skill of test result inaccuracy
Art problem, the present invention provides a kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method, dynamic for rail vehicle electromagnetic radiation
Each compartment is tested respectively in state test and provides a kind of effective ways, convenient for being carried out to vehicle electromagnetic radiation value excessive problem
Field diagnostic, realizes car speed parameter and car position information automatic sampling and test operation information intelligent is shown,
And improve the efficiency and test accuracy of rail vehicle electromagnetic radiation type approval test.
The technical solution adopted for solving the technical problem of the present invention is as follows:
A kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method comprising following steps:
Step 1: one section of straight track section is chosen on ground in orbit arranges a set of ground receiver control system,
A set of location aware sensing system is arranged in the positional symmetry for being L apart from above-mentioned test antenna two sides, in tested vehicle two
The headstock drivers' cab at end is respectively arranged a set of vehicle load measurement and display system；The ground receiver control system includes measurement electromagnetism
Radiate test antenna, receiver, the first logic control and display unit, the first wireless communication module and the first power supply mould used
Block, ground receiver control system by the first logic control and are shown by testing the electromagnetic radiation data of antenna measurement vehicle
Show that unit realizes the setting of test instructions and test parameters and the storage and display of electromagnetic vehicle radiation data；The position sense
Know that sensing system system includes second power supply module, location aware sensor, the second wireless communication module and logic control list
Member, location aware sensing system control the location information that position detecting sensor obtains tested vehicle by logic control element
The position reached with tested vehicle head vehicle, and control the second wireless communication module and location information is informed into vehicle load measurement and display system
System；The vehicle load measurement and display system include third power module, acceleration transducer, velocity sensor, third channel radio
Believe module and the second logic control and display unit, vehicle load measurement and display system pass through the second logic control and display unit control
Acceleration transducer and velocity sensor processed measure the acceleration and speed data of tested vehicle, control third wireless communication in real time
Module realizes the real-time communication of measured data and ground receiver control system, and guides driver to carry out Train by display interface
Test operation；
Step 2: on the basis of the test aerial position of ground receiver control system, towards tested vehicle, and along tested vechicle
Direction of travel setting left lateral position and right lateral position；Test operator passes through the first logic control of ground receiver control system under vehicle
System and display unit input the length l of tested vehicle each compartment and need to save compartment to left or right side N and test, with
Head vehicle is Section 1 compartment, and N takesN is the marshalling quantity of tested vehicle, and n takes natural number and is the idol greater than 2
Number；
Step 3: opening ground receiver control system, location aware sensing system and vehicle load measurement and display system
Power supply, update ground receiver control system and vehicle load measurement and display system display unit, synchronous initiation setup parameter and
Time；
Step 4: the vehicle load measurement and display system positioned at tested vehicle headstock driving position can be by ground receiver control systems
Test instructions real-time display come out, driver shifts handle onto corresponding position according to the test instructions of display, with test needed for
Initial acceleration starting, vehicle load measurement and display system acquire tested vehicle by acceleration transducer and velocity sensor in real time
Acceleration and speed signal, and in real time with ground receiver control system keep wireless telecommunications；When the speed of acquisition is not up to surveyed
Initial velocity v needed for examination0(ti) or already exceed v0(ti) when, the state that vehicle load measurement and display system are shown is that " please add
Speed " or " please slow down "；The initial velocity v needed for train speed reaches test0(ti) when, vehicle load measurement and display system update
Display state is " speed is correct, asks coasting ", initial velocity v0(ti) need to be less than testing standard speed vs(ti)；
Step 5: the distance whether location aware sensing system detection headstock has arrived at distance test antenna side is
The position of L；When detecting headstock, location aware sensing system is communicated with vehicle load measurement and display system, vehicle-mounted survey
Velocity sensor in amount and display system judges whether tested vehicle has reached the required initial velocity v of test0(ti), such as
Fruit reaches initial velocity v0(ti), vehicle load measurement and display system update display state " to prepare section, speed is correct, asks lazy
Row " reminds driver to come into and prepares section, i.e., will start to test, and ground receiver control system automatically begins to record test days
The electromagnetic vehicle radiation data that line measures；If the velocity amplitude that velocity sensor measures is not up to the initial velocity v needed for testing0
(ti), vehicle load measurement and display system update display state for " speed is wrong, please retry ", this service speed of driver is reminded not have
It meets the requirements, needs tested vehicle return to origin position, then increase initial acceleration restarting, and according to step 4
It is travelled to step 5, until it is " to prepare section, speed is correct, asks lazy that vehicle load measurement and display system, which update display state,
Row "；
Step 6: after tested vehicle enters preparation section, the second logic control and display of vehicle load measurement and display system
Unit can calculate the time parameter t of timer according to the setting of testing crew before testing1:
Wherein: N indicates that current test is that N saves compartment；L is the length of each compartment；v0For the initial speed needed for testing
Degree；L is location aware sensing system at a distance from test antenna；
Step 7: time t1After second, the N of tested vehicle section compartment reaches the position of test antenna, vehicle load measurement and aobvious
Show that system update shows that state is " acceleration of 1/3 tractive force ", handle is shifted onto the position of about 1/3 traction by driver, and speed passes at this time
Sensor and acceleration transducer acquire vehicle status parameters in real time；If acceleration transducer detects that acceleration is excessive or mistake
It is small, i.e., it is not that 1/3 tractive force accelerates, then it is " please be adjusted to 1/3 tractive force " that vehicle load measurement and display system, which update display state,
It informs that driver operation is wrong, needs to be adjusted；If acceleration transducer detects acceleration in 1/3 tractive force acceleration range
It is interior, tested vehicle by from test needed for initial velocity v0(ti) reach testing standard speed vs(ti)；
Step 8: the speed when tested vehicle reaches testing standard speed vs(ti) after, vehicle load measurement and display system update
Display state is " speed is correct, asks coasting ", and the second logic control and display unit can be according to the inputs of testing crew before testing
Value setting timer time parameter t2；Time t2After second, vehicle load measurement and display system update display state for " the common system of maximum
It is dynamic ", until tested vehicle stops；When the velocity sensor and acceleration transducer of vehicle load measurement and display system detect it is tested
After vehicle stops, location aware sensing system is confirmed whether to detect tested vehicle 4 times；If detecting tested vehicle 4 times,
It is " off-test " that then vehicle load measurement and display system, which update display state, informs that driver's permutation vehicle has run out test scope,
This time off-test；If being not detected train 4 times, vehicle load measurement and display system update display state " to ask motor-car, trying
Test and be not finished ", it informs that driver's permutation vehicle is not also all driven out to test scope, needs to continue to move forward at a slow speed, until vehicle-mounted survey
Until amount and display system update display state for " off-test "；
Step 9: after the display state of vehicle load measurement and display system is " off-test ", ground receiver control system
The amount of electromagnetic radiation data of this test acquisition are saved by the first logic control and display unit, it is vehicle-mounted after preservation
It is " data preservation finishes " that measurement and display system, which update display state, and so far a section compartment of current tested is completed；
Step 10: repeating step 2 to step 9, the test in next section compartment is successively carried out, until the whole of tested vehicle
Complete test in compartment.
The beneficial effects of the present invention are: the method achieve the dynamic test to each compartment, it is exceeded convenient for electromagnetic radiation
The diagnosis of problem；This method realizes train from single parameter to test whole acceleration, speed and location information as support
Leap to multi-parameter big data direction, test result are more acurrate；Entire test process realizes that intelligence guides driver operation, data
Automatic collection and preservation, test method are simple and efficient.
Detailed description of the invention
Fig. 1 is the arrangement schematic diagram of each hardware in rail vehicle electromagnetic radiation multi-parameter collaboration test method of the present invention.
Fig. 2 is the testing principle block diagram of rail vehicle electromagnetic radiation multi-parameter collaboration test method of the present invention.
Fig. 3 is the flow diagram of rail vehicle electromagnetic radiation multi-parameter collaboration test method of the present invention.
Fig. 4 is the test result schematic diagram of rail vehicle electromagnetic radiation multi-parameter collaboration test method of the present invention.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
Rail vehicle electromagnetic radiation multi-parameter collaboration test method of the invention includes the following steps:
Step 1: one section of straight track section arrangement is chosen as shown in Figure 1 to Figure 3, on ground in orbit a set ofly
Face reception control system, test antenna, receiver, the first logic control and the display unit used including measurement electromagnetic radiation,
First wireless communication module and the first power module；It is arranged in the positional symmetry for being L apart from above-mentioned test antenna two sides a set of
Location aware sensing system, location aware sensing system system include second power supply module, location aware sensor, second
Wireless communication module and logic control element；Headstock drivers' cab at tested vehicle both ends is respectively arranged a set of vehicle load measurement and shows
Show system, so that driver is carried out Train experiment operation according to the display interface of the system, vehicle load measurement and display system include
Third power module, acceleration transducer, velocity sensor, third wireless communication module and the second logic control and display are single
Member；Test antenna can be used Rohde&Schwarz production HFH2-Z2 annular test antenna and SCHWARZBECK production
VULP9168 composite test antenna, receiver can be used the ESU8 receiver of Rohde&Schwarz, the first logic control and aobvious
Show that the PLC of Siemens Company's production can be used in unit, the second logic control and display unit and logic control element
Inhand company can be used in 6ES7214, the first wireless communication module, the second wireless communication module and third wireless communication module
The big bodyguard day Cheng Ke in Beijing can be used in the InDTU331 of production, the first power module, second power supply module and third power module
The WSD30 type power supply of skill Co., Ltd production；The Honeywell RDS80004-H location aware can be used in location aware sensor
The AY2901T-E type acceleration of the high-spirited Electronic Science and Technology Co., Ltd.'s production in Qinhuangdao can be used in sensor, acceleration transducer
The CV-YD-002 type velocity sensor of Jiangsu Lianneng Electronic Technology Co., Ltd.'s production can be used in sensor, velocity sensor；
Step 2: on the basis of the test aerial position of ground receiver control system, towards tested vehicle, and along tested vechicle
Direction of travel setting left lateral position and right lateral position；Test operator passes through the first logic control of ground receiver control system under vehicle
System and display unit input the length l of tested vehicle each compartment and need to save compartment to left or right side N and test, with
Head vehicle is Section 1 compartment, and N takesN is the marshalling quantity of tested vehicle, and n takes natural number and is the idol greater than 2
Number；
Step 3: opening ground receiver control system, location aware sensing system and vehicle load measurement and display system
Power supply, update ground receiver control system and vehicle load measurement and display system display unit, synchronous initiation setup parameter and
Time；
Step 4: the vehicle load measurement and display system positioned at tested vehicle headstock driving position can be by ground receiver control systems
Test instructions real-time display come out, driver shifts handle onto corresponding position according to the test instructions of display, with test needed for
Initial acceleration starting, vehicle load measurement and display system acquire tested vehicle by acceleration transducer and velocity sensor in real time
Acceleration and speed signal, and in real time with ground receiver control system keep wireless telecommunications；When the speed of acquisition is not up to surveyed
Initial velocity v needed for examination0(ti) or already exceed v0(ti) when, the state that vehicle load measurement and display system are shown is that " please add
Speed " or " please slow down "；The initial velocity v needed for train speed reaches test0(ti) when, vehicle load measurement and display system update
Display state is " speed is correct, asks coasting ", initial velocity v0(ti) need to be less than testing standard speed vs(ti)；
Step 5: the distance whether location aware sensing system detection headstock has arrived at distance test antenna side is
The position of L；When detecting headstock, location aware sensing system is communicated with vehicle load measurement and display system, vehicle-mounted survey
Velocity sensor in amount and display system judges whether tested vehicle has reached the required initial velocity v of test0(ti), such as
Fruit reaches initial velocity v0(ti), vehicle load measurement and display system update display state " to prepare section, speed is correct, asks lazy
Row " reminds driver to come into and prepares section, i.e., will start to test, and ground receiver control system automatically begins to record test days
The electromagnetic vehicle radiation data that line measures；If the velocity amplitude that velocity sensor measures is not up to the initial velocity v needed for testing0
(ti), vehicle load measurement and display system update display state for " speed is wrong, please retry ", this service speed of driver is reminded not have
It meets the requirements, needs tested vehicle return to origin position, then increase initial acceleration restarting, and according to step 4
It is travelled to step 5, until it is " to prepare section, speed is correct, asks lazy that vehicle load measurement and display system, which update display state,
Row "；
Step 6: after tested vehicle enters preparation section, the second logic control and display of vehicle load measurement and display system
Unit can calculate the time parameter t of timer according to the setting of testing crew before testing1:
Wherein: N indicates that current test is that N saves compartment；L is the length of each compartment；v0For the initial speed needed for testing
Degree；L is location aware sensing system at a distance from test antenna；
Step 7: time t1After second, the N of tested vehicle section compartment reaches the position of test antenna, vehicle load measurement and aobvious
Show that system update shows that state is " acceleration of 1/3 tractive force ", handle is shifted onto the position of about 1/3 traction by driver, and speed passes at this time
Sensor and acceleration transducer acquire vehicle status parameters in real time；If acceleration transducer detects that acceleration is excessive or mistake
It is small, i.e., it is not that 1/3 tractive force accelerates, then it is " please be adjusted to 1/3 tractive force " that vehicle load measurement and display system, which update display state,
It informs that driver operation is wrong, needs to be adjusted；If acceleration transducer detects acceleration in 1/3 tractive force acceleration range
It is interior, tested vehicle by from test needed for initial velocity v0(ti) reach testing standard speed vs(ti)；
Step 8: the speed when tested vehicle reaches testing standard speed vs(ti) after, vehicle load measurement and display system update
Display state is " speed is correct, asks coasting ", and the second logic control and display unit can be according to the inputs of testing crew before testing
Value setting timer time parameter t2；Time t2After second, vehicle load measurement and display system update display state for " the common system of maximum
It is dynamic ", until tested vehicle stops；When the velocity sensor and acceleration transducer of vehicle load measurement and display system detect it is tested
After vehicle stops, two sets of location aware sensing systems are confirmed whether to detect tested vehicle 4 times；If detecting tested vehicle
4 times, then it is " off-test " that vehicle load measurement and display system, which update display state, informs that driver's permutation vehicle has run out test model
It encloses, this time off-test；If being not detected train 4 times, vehicle load measurement and display system update display state for that " please move
Vehicle, test are not finished ", it informs that driver's permutation vehicle is not also all driven out to test scope, needs to continue to move forward at a slow speed, until vehicle
Until measurement and display system update display state are carried as " off-test "；
Step 9: after the display state of vehicle load measurement and display system is " off-test ", ground receiver control system
The amount of electromagnetic radiation data of this test acquisition are saved by the first logic control and display unit, it is vehicle-mounted after preservation
It is " data preservation finishes " that measurement and display system, which update display state, and so far a section compartment of current tested is completed；
Step 10: repeating step 2 to step 9, the test in next section compartment is successively carried out, until the whole of tested vehicle
Test is completed in compartment, and test results are shown in figure 4.
Claims (1)
1. a kind of rail vehicle electromagnetic radiation multi-parameter cooperates with test method, which is characterized in that this method comprises the following steps:
Step 1: choosing one section of straight track section on ground in orbit arranges a set of ground receiver control system, away from
A set of location aware sensing system is arranged from the positional symmetry that above-mentioned test antenna two sides are L, at tested vehicle both ends
Head vehicle drivers' cab is respectively arranged a set of vehicle load measurement and display system；The ground receiver control system includes measurement electromagnetic radiation
Test antenna, receiver, the first logic control and display unit, the first wireless communication module and the first power module used,
Ground receiver control system passes through the first logic control and display list by testing the electromagnetic radiation data of antenna measurement vehicle
Member realizes the setting of test instructions and test parameters and the storage and display of electromagnetic vehicle radiation data；The location aware passes
Sensor service system includes second power supply module, location aware sensor, the second wireless communication module and logic control element, position
Set detecting sensor system by logic control element control position detecting sensor obtain tested vehicle location information and by
The position that measuring car head vehicle reaches, and control the second wireless communication module and location information is informed into vehicle load measurement and display system；
The vehicle load measurement and display system include third power module, acceleration transducer, velocity sensor, third radio communication mold
Block and the second logic control and display unit, vehicle load measurement and display system are added by the second logic control and display unit control
Velocity sensor and velocity sensor measure the acceleration and speed data of tested vehicle in real time, control third wireless communication module
It realizes the real-time communication of measured data and ground receiver control system, and guides driver to carry out Train experiment behaviour by display interface
Make；
Step 2: on the basis of the test aerial position of ground receiver control system, towards tested vehicle, and along tested vehicle row
Left lateral position and right lateral position are set into direction；Under vehicle test operator by the first logic control of ground receiver control system and
Display unit inputs the length l of tested vehicle each compartment and needs to save compartment to left or right side N and tests, with head vehicle
For Section 1 compartment, N is takenN is the marshalling quantity of tested vehicle, and n takes natural number and is the even number greater than 2；
Step 3: the power supply of ground receiver control system, location aware sensing system and vehicle load measurement and display system is opened,
Update the display unit of ground receiver control system and vehicle load measurement and display system, synchronous initiation setup parameter and time；
Step 4: the vehicle load measurement and display system positioned at tested vehicle headstock driving position can be by the examinations of ground receiver control system
It tests instruction real-time display to come out, driver shifts handle onto corresponding position according to the test instructions of display, with initial needed for test
Acceleration starting, vehicle load measurement and display system acquire adding for tested vehicle by acceleration transducer and velocity sensor in real time
Speed and speed signal, and wireless telecommunications are kept with ground receiver control system in real time；When the speed of acquisition not up to tests institute
The initial velocity v needed0(ti) or already exceed v0(ti) when, the state that vehicle load measurement and display system are shown is " please accelerate "
Or " please slow down "；The initial velocity v needed for train speed reaches test0(ti) when, vehicle load measurement and display system update display
State is " speed is correct, asks coasting ", initial velocity v0(ti) need to be less than testing standard speed vs(ti)；
Step 5: the distance whether location aware sensing system detection headstock has arrived at distance test antenna side is L's
Position；When detecting headstock, location aware sensing system is communicated with vehicle load measurement and display system, vehicle load measurement and
Velocity sensor in display system judges whether tested vehicle has reached the required initial velocity v of test0(ti), if reached
To initial velocity v0(ti), vehicle load measurement and display system update display state for " preparing section, speed is correct, asks coasting ", mention
Awake driver, which comes into, prepares section, i.e., will start to test, and ground receiver control system automatically begins to record test antenna and measures
Electromagnetic vehicle radiation data；If the velocity amplitude that velocity sensor measures is not up to the initial velocity v needed for testing0(ti), vehicle
It carries measurement and display system updates display state for " speed is wrong, please retry ", this service speed of driver is reminded not meet
It is required that needing tested vehicle return to origin position, then increase initial acceleration restarting, and according to step 4 to step
Five are travelled, until it is " preparing section, speed is correct, asks coasting " that vehicle load measurement and display system, which update display state,；
Step 6: after tested vehicle enters preparation section, the second logic control of vehicle load measurement and display system and display unit
The time parameter t of timer can be calculated according to the setting of testing crew before testing1:
Wherein: N indicates that current test is that N saves compartment；L is the length of each compartment；v0For the initial velocity needed for testing；L is
Location aware sensing system is at a distance from test antenna；
Step 7: time t1After second, the N section compartment of tested vehicle reaches the position of test antenna, vehicle load measurement and display system
Update display state be " accelerations of 1/3 tractive force ", driver by handle shift onto about 1/3 traction position, at this time velocity sensor with
Acceleration transducer acquires vehicle status parameters in real time；If acceleration transducer detects that acceleration is excessive or too small, i.e., not
It is that 1/3 tractive force accelerates, then it is " please be adjusted to 1/3 tractive force ", informing department that vehicle load measurement and display system, which update display state,
Machine operation is wrong, needs to be adjusted；If acceleration transducer detect acceleration in 1/3 tractive force acceleration range, quilt
Measuring car by from test needed for initial velocity v0(ti) reach testing standard speed vs(ti)；
Step 8: the speed when tested vehicle reaches testing standard speed vs(ti) after, vehicle load measurement and display system update display
State is " speed is correct, asks coasting ", and the second logic control and display unit can be set according to the input value of testing crew before testing
Set timer time parameter t2；Time t2After second, vehicle load measurement and display system update display state are " full service braking ",
Until tested vehicle stops；When the velocity sensor and acceleration transducer of vehicle load measurement and display system detect tested vehicle
After stopping, location aware sensing system is confirmed whether to detect tested vehicle 4 times；If detecting tested vehicle 4 times, vehicle
It carries measurement and display system updates display state for " off-test ", inform that driver's permutation vehicle has run out test scope, this time
Off-test；If being not detected train 4 times, vehicle load measurement and display system update display state " to ask motor-car, test is not
Terminate ", inform driver's permutation vehicle also all is driven out to test scope, need continue move forward at a slow speed, until vehicle load measurement and
Until display system updates display state for " off-test "；
Step 9: ground receiver control system passes through after the display state of vehicle load measurement and display system is " off-test "
First logic control and display unit save the amount of electromagnetic radiation data of this test acquisition, after preservation, vehicle load measurement
And it is " data preservation finishes " that display system, which updates display state, so far a section compartment of current tested is completed；
Step 10: repeating step 2 to step 9, the test in next section compartment is successively carried out, until whole compartments of tested vehicle
Complete test.
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| CN109061316B (en) | 2020-08-21 |
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