CN109061316B - Rail vehicle electromagnetic radiation multi-parameter cooperative testing method - Google Patents
Rail vehicle electromagnetic radiation multi-parameter cooperative testing method Download PDFInfo
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- CN109061316B CN109061316B CN201810736652.XA CN201810736652A CN109061316B CN 109061316 B CN109061316 B CN 109061316B CN 201810736652 A CN201810736652 A CN 201810736652A CN 109061316 B CN109061316 B CN 109061316B
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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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Abstract
A rail vehicle electromagnetic radiation multi-parameter cooperative test method relates to the technical field of rail traffic electromagnetic compatibility tests, and comprises the steps that a set of ground receiving control system is arranged in a section of straight rail section, a set of position sensing sensor system is symmetrically arranged at a position L away from two sides of a test antenna, and a set of vehicle-mounted measurement and display system is respectively arranged in cab at the two ends of a locomotive; the vehicle-mounted measuring and displaying system obtains the speed and the acceleration of the train in real time, realizes the real-time communication between the measured data and the ground receiving and controlling system, and guides a driver to operate through a display interface; the position perception sensor system provides position information of the train, perceives the position where the train head arrives, and informs the position information to the vehicle-mounted measuring and displaying system through the wireless communication unit; the ground receiving control system realizes the setting of the test process, the measurement of the vehicle electromagnetic radiation and the data storage and display. The method realizes the dynamic test of each carriage, and is convenient for diagnosing the problem of overproof electromagnetic radiation.
Description
Technical Field
The invention relates to the technical field of rail transit electromagnetic compatibility tests, in particular to a rail vehicle electromagnetic radiation multi-parameter collaborative testing method.
Background
Modern railway vehicles integrate large and complex electrical, communication and signal systems, and electromagnetic radiation generated by the vehicles is an important test item for product type tests. According to relevant standards of electromagnetic compatibility of the rail vehicle, static and dynamic electromagnetic radiation tests need to be carried out on the vehicle in the electromagnetic radiation test, and whether the maximum electromagnetic radiation generated by the train meets the standard requirements or not is judged accordingly. The static electromagnetic radiation test is carried out under the condition that each carriage and the test antenna are static, the position is well adjusted, and the test is easier to carry out. The dynamic working condition is that the train completes an electromagnetic radiation test in the running process, the speed of the train is required to accord with the traction curve characteristic, and the generated electromagnetic radiation is the theoretical maximum value at the moment.
To ensure the accuracy of the dynamic emr test data, the test requires that the distance between each railcar relative to the start point of the test run is a known amount that can be obtained when the train reaches a desired operating condition at a given speed and acceleration. However, the existing dynamic test method cannot provide the speed value, the acceleration value and the distance value relative to the test starting position of each carriage of the train in real time.
At present, because the speed of a train and the position of a carriage under dynamic working conditions are difficult to match and the like, dynamic tests cannot be carried out on each carriage, a test method commonly adopted by domestic and foreign qualified test institutions is to test the whole train, the position of a train head passes through a first test antenna at a constant speed lower than a standard speed, then the train head is accelerated by 1/3 with the maximum traction force, when the speed of the train reaches a standard required speed, the train runs for a period of time at the constant speed, then the train is braked at the maximum in common use, and the whole train is ensured to completely pass through the last test antenna as far as possible. The alternative average evaluation test method for replacing independent speed and position data of each carriage with the average value of the speed and the position of the whole train cannot test each carriage of the train, and once the electromagnetic radiation value exceeds the standard limit value, local positioning cannot be realized. More importantly, when the train accelerates at 1/3 with the maximum traction force, the train can not ensure that the carriage generating the maximum electromagnetic radiation just passes through the position of one test antenna, and when the situation occurs, the tester has no means to find the problem, considers that the test value is the maximum value, and records the test result in the test report. Therefore, the test result of the dynamic test method has inaccuracy.
Disclosure of Invention
The invention provides a railway vehicle electromagnetic radiation multi-parameter cooperative test method, which aims to solve the technical problems that the test of a single carriage cannot be realized and the test result is inaccurate because the speed value, the acceleration value and the distance value relative to the test starting position of each carriage of a train cannot be provided in real time in the conventional dynamic test method.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a rail vehicle electromagnetic radiation multi-parameter cooperative test method comprises the following steps:
firstly, selecting a section of straight track section on the ground beside the track to arrange a set of ground receiving control system, symmetrically arranging a set of position sensing sensor system at the position L away from the two sides of the test antenna, and respectively arranging a set of vehicle-mounted measuring and displaying system on the head driver stations at the two ends of the vehicle to be measured; the ground receiving control system comprises a test antenna used for measuring electromagnetic radiation, a receiver, a first logic control and display unit, a first wireless communication module and a first power supply module, and the ground receiving control system measures the electromagnetic radiation data of the vehicle through the test antenna and realizes the setting of test instructions and test parameters and the storage and display of the electromagnetic radiation data of the vehicle through the first logic control and display unit; the position perception sensor system comprises a second power supply module, a position perception sensor, a second wireless communication module and a logic control unit, the position perception sensor system controls the position perception sensor to obtain the position information of the detected vehicle and the position where the head of the detected vehicle arrives through the logic control unit, and controls the second wireless communication module to inform the vehicle-mounted measuring and displaying system of the position information; the vehicle-mounted measuring and displaying system comprises a third power supply module, an acceleration sensor, a speed sensor, a third wireless communication module and a second logic control and displaying unit, the vehicle-mounted measuring and displaying system controls the acceleration sensor and the speed sensor to measure the acceleration and the speed data of the measured vehicle in real time through the second logic control and displaying unit, controls the third wireless communication module to realize the real-time communication between the measured data and the ground receiving control system, and guides a driver to perform train test operation through a display interface;
secondly, taking the position of a test antenna of the ground receiving control system as a reference, facing the vehicle to be tested, and setting a left side position and a right side position along the advancing direction of the vehicle to be tested; the test operator under the vehicle inputs the tested vehicle through the first logic control and display unit of the ground receiving control systemThe length l of each carriage is equal to the length l of the Nth carriage on the left side or the right side, the head is taken as the 1 st carriage, and N is taken
n is the number of marshalling of the detected vehicle, and the n is an even number which is greater than 2 and is a natural number;
starting power supplies of the ground receiving control system, the position sensing sensor system and the vehicle-mounted measuring and displaying system, updating display units of the ground receiving control system and the vehicle-mounted measuring and displaying system, and initializing set parameters and time synchronously;
step four, the vehicle-mounted measuring and displaying system positioned at the driver station at the head of the tested vehicle can display the test instruction of the ground receiving control system in real time, a driver pushes the handle to a corresponding position according to the displayed test instruction and starts the vehicle-mounted measuring and displaying system at the initial acceleration required by the test, and the vehicle-mounted measuring and displaying system acquires the acceleration and speed signals of the tested vehicle in real time through the acceleration sensor and the speed sensor and keeps wireless communication with the ground receiving control system in real time; when the collecting speed does not reach the initial speed v required by the test0Or has exceeded v0Meanwhile, the state displayed by the vehicle-mounted measuring and displaying system is 'please accelerate' or 'please decelerate'; when the train speed reaches the initial speed v required by the test0In time, the vehicle-mounted measurement and display system updates the display state to be 'speed is correct, please to coast', and the initial speed v0Need to be less than the test standard velocity vs；
Step five, detecting whether the vehicle head reaches a position with a distance L from one side of the test antenna by using a position sensing sensor system; when the vehicle head is detected, the position perception sensor system is communicated with the vehicle-mounted measuring and displaying system, and the speed sensor in the vehicle-mounted measuring and displaying system judges whether the vehicle to be detected reaches the initial speed v required by the test0If the initial velocity v is reached0The vehicle-mounted measuring and displaying system updates the display state to be 'preparation interval, correct speed and please walk down', reminds a driver of entering the preparation interval and starting the test, and the ground receiving control system automaticallyRecording vehicle electromagnetic radiation data measured by the test antenna at the beginning of movement; if the speed value measured by the speed sensor does not reach the initial speed v required by the test0The vehicle-mounted measuring and displaying system updates the display state to be 'speed has error, please retry', reminds a driver that the operation speed does not meet the requirement, the measured vehicle needs to be returned to the starting point position, then the initial acceleration is increased to restart, and the vehicle is driven according to the fourth step to the fifth step until the vehicle-mounted measuring and displaying system updates the display state to be 'preparation interval, speed is correct, please go on lazily';
step six, after the tested vehicle enters the preparation interval, a second logic control and display unit of the vehicle-mounted measurement and display system can calculate the time parameter t of the timer according to the setting of the tester before the test1：
Wherein: n represents that the current test is the Nth carriage; l is the length of each carriage; v. of0Initial speed required for testing; l is the distance between the position sensing sensor system and the test antenna;
step seven, time t1After the second, the Nth compartment of the tested vehicle reaches the position of the test antenna, the vehicle-mounted measurement and display system updates the display state to 1/3 traction acceleration, a driver pushes a handle to a position about 1/3 traction, and at the moment, a speed sensor and an acceleration sensor acquire vehicle state parameters in real time; if the acceleration sensor detects that the acceleration is too large or too small, namely the traction force is not 1/3 to accelerate, the vehicle-mounted measuring and displaying system updates the display state to be 'please adjust to 1/3 traction force', and informs a driver that the operation is wrong and the adjustment is needed; if the acceleration sensor detects that the acceleration is in the 1/3 traction acceleration range, the tested vehicle will start to test the required initial speed v0Reach test standard velocity vs；
Step eight, when the speed of the tested vehicle reaches the test standard speed vsThen, the vehicle-mounted measuring and displaying system updates the display state to be 'speed is correct, please go idle'The second logic control and display unit sets the time parameter t of the timer according to the input value of the tester before the test2(ii) a Time t2After the second, the vehicle-mounted measuring and displaying system updates the display state to be the maximum service brake state until the measured vehicle stops; when a speed sensor and an acceleration sensor of the vehicle-mounted measuring and displaying system detect that the detected vehicle stops, the position sensing sensor system confirms whether the detected vehicle is detected for 4 times; if the detected vehicle is detected for 4 times, the vehicle-mounted measuring and displaying system updates the display state to be 'test end', informs a driver that the whole train of vehicles has run out of the test range, and ends the test; if the train is not detected for 4 times, the updating display state of the vehicle-mounted measuring and displaying system is 'please move the train, the test is not finished', a driver is informed that the whole train does not completely run out of the test range, and the train needs to continue to run forwards at a low speed until the updating display state of the vehicle-mounted measuring and displaying system is 'test finished';
step nine, when the display state of the vehicle-mounted measuring and displaying system is 'test end', the ground receiving control system stores the electromagnetic radiation data acquired by the test through the first logic control and displaying unit, and after storage, the vehicle-mounted measuring and displaying system updates the display state to 'data storage end', and the test of the currently tested carriage is finished;
and step ten, repeating the step two to the step nine, and sequentially testing the next carriage until all carriages of the tested vehicle are tested.
The invention has the beneficial effects that: the method realizes the dynamic test of each carriage, and is convenient for the diagnosis of the problem of overproof electromagnetic radiation; the method takes acceleration, speed and position information of the whole test course as supports, so that the crossing of a train from a single parameter to a multi-parameter big data direction is realized, and the test result is more accurate; the whole test process realizes intelligent guidance of driver operation and automatic data acquisition and storage, and the test method is simple and efficient.
Drawings
FIG. 1 is a schematic layout diagram of hardware in the rail vehicle electromagnetic radiation multi-parameter cooperative testing method of the present invention.
FIG. 2 is a testing schematic block diagram of the rail vehicle electromagnetic radiation multi-parameter cooperative testing method of the present invention.
FIG. 3 is a schematic flow chart of the rail vehicle electromagnetic radiation multi-parameter cooperative testing method of the present invention.
FIG. 4 is a schematic diagram of a test result of the rail vehicle electromagnetic radiation multi-parameter cooperative test method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention discloses a railway vehicle electromagnetic radiation multi-parameter cooperative testing method which comprises the following steps:
the method comprises the following steps: as shown in fig. 1 to 3, a set of ground receiving control system is arranged in a straight track section selected from the ground beside the track, and includes a test antenna for measuring electromagnetic radiation, a receiver, a first logic control and display unit, a first wireless communication module and a first power module; a set of position perception sensor systems is symmetrically arranged at a position L away from the two sides of the test antenna, and each position perception sensor system comprises a second power supply module, a position perception sensor, a second wireless communication module and a logic control unit; the train test system comprises a first logic control and display unit, a second logic control and display unit, a third power supply module, an acceleration sensor, a speed sensor, a third wireless communication module and a second power supply module, wherein the first logic control and display unit is used for controlling the first logic control and display unit to perform train test operation; the test antenna can use a HFH2-Z2 annular test antenna manufactured by Rohde & Schwarz and a VULP9168 composite test antenna manufactured by SCHWARZBECK, the receiver can use an ESU8 receiver manufactured by Rohde & Schwarz, the first logic control and display unit, the second logic control and display unit and the logic control unit can use a PLC6ES7214 manufactured by Siemens, the first wireless communication module, the second wireless communication module and the third wireless communication module can use an InDTU331 manufactured by Inhand, and the first power supply module, the second power supply module and the third power supply module can use a WSD30 type power supply manufactured by Beijing Wei Tianshi Limited; the position perception sensor can use an RDS80004-H HONEYWELL position perception sensor, the acceleration sensor can use an AY2901T-E type acceleration sensor produced by Onyang electronic technology Limited, Qinhuang island, and the speed sensor can use a CV-YD-002 type speed sensor produced by Jiangsu Union energy electronic technology Limited;
secondly, taking the position of a test antenna of the ground receiving control system as a reference, facing the vehicle to be tested, and setting a left side position and a right side position along the advancing direction of the vehicle to be tested; the test operator under the vehicle inputs the length l of each carriage of the tested vehicle and needs to test the Nth carriage on the left side or the right side through the first logic control and display unit of the ground receiving control system, the vehicle head is used as the 1 st carriage, and N is taken
n is the number of marshalling of the detected vehicle, and the n is an even number which is greater than 2 and is a natural number;
starting power supplies of the ground receiving control system, the position sensing sensor system and the vehicle-mounted measuring and displaying system, updating display units of the ground receiving control system and the vehicle-mounted measuring and displaying system, and initializing set parameters and time synchronously;
step four, the vehicle-mounted measuring and displaying system positioned at the driver station at the head of the tested vehicle can display the test instruction of the ground receiving control system in real time, a driver pushes the handle to a corresponding position according to the displayed test instruction and starts the vehicle-mounted measuring and displaying system at the initial acceleration required by the test, and the vehicle-mounted measuring and displaying system acquires the acceleration and speed signals of the tested vehicle in real time through the acceleration sensor and the speed sensor and keeps wireless communication with the ground receiving control system in real time; when the collecting speed does not reach the initial speed v required by the test0Or has exceeded v0Meanwhile, the state displayed by the vehicle-mounted measuring and displaying system is 'please accelerate' or 'please decelerate'; when the train speed reaches the initial speed v required by the test0In time, the vehicle-mounted measurement and display system updates the display state to be 'speed is correct, please to coast', and the initial speed v0Needs to be less than the standard speed of the testDegree vs；
Step five, detecting whether the vehicle head reaches a position with a distance L from one side of the test antenna by using a position sensing sensor system; when the vehicle head is detected, the position perception sensor system is communicated with the vehicle-mounted measuring and displaying system, and the speed sensor in the vehicle-mounted measuring and displaying system judges whether the vehicle to be detected reaches the initial speed v required by the test0If the initial velocity v is reached0The vehicle-mounted measuring and displaying system updates the display state to be a preparation interval, the speed is correct, please to idle, the driver is reminded to enter the preparation interval, the test is about to be started, and the ground receiving control system automatically starts to record the vehicle electromagnetic radiation data measured by the test antenna; if the speed value measured by the speed sensor does not reach the initial speed v required by the test0The vehicle-mounted measuring and displaying system updates the display state to be 'speed has error, please retry', reminds a driver that the operation speed does not meet the requirement, the measured vehicle needs to be returned to the starting point position, then the initial acceleration is increased to restart, and the vehicle is driven according to the fourth step to the fifth step until the vehicle-mounted measuring and displaying system updates the display state to be 'preparation interval, speed is correct, please go on lazily';
step six, after the tested vehicle enters the preparation interval, a second logic control and display unit of the vehicle-mounted measurement and display system can calculate the time parameter t of the timer according to the setting of the tester before the test1：
Wherein: n represents that the current test is the Nth carriage; l is the length of each carriage; v. of0Initial speed required for testing; l is the distance between the position sensing sensor system and the test antenna;
step seven, time t1After second, the Nth compartment of the tested vehicle reaches the position of the test antenna, the on-board measurement and display system updates the display state to be 1/3 traction force acceleration, the driver pushes the handle to the position of about 1/3 traction force, and the speed sensor and the acceleration sensor are actually used at the momentCollecting vehicle state parameters; if the acceleration sensor detects that the acceleration is too large or too small, namely the traction force is not 1/3 to accelerate, the vehicle-mounted measuring and displaying system updates the display state to be 'please adjust to 1/3 traction force', and informs a driver that the operation is wrong and the adjustment is needed; if the acceleration sensor detects that the acceleration is in the 1/3 traction acceleration range, the tested vehicle will start to test the required initial speed v0Reach test standard velocity vs；
Step eight, when the speed of the tested vehicle reaches the test standard speed vsThen, the vehicle-mounted measurement and display system updates the display state to be 'speed is correct, please to idle', and the second logic control and display unit can set the time parameter t of the timer according to the input value of the tester before the test2(ii) a Time t2After the second, the vehicle-mounted measuring and displaying system updates the display state to be the maximum service brake state until the measured vehicle stops; after a speed sensor and an acceleration sensor of the vehicle-mounted measuring and displaying system detect that the detected vehicle stops, two sets of position sensing sensor systems determine whether the detected vehicle is detected for 4 times; if the detected vehicle is detected for 4 times, the vehicle-mounted measuring and displaying system updates the display state to be 'test end', informs a driver that the whole train of vehicles has run out of the test range, and ends the test; if the train is not detected for 4 times, the updating display state of the vehicle-mounted measuring and displaying system is 'please move the train, the test is not finished', a driver is informed that the whole train does not completely run out of the test range, and the train needs to continue to run forwards at a low speed until the updating display state of the vehicle-mounted measuring and displaying system is 'test finished';
step nine, when the display state of the vehicle-mounted measuring and displaying system is 'test end', the ground receiving control system stores the electromagnetic radiation data acquired by the test through the first logic control and displaying unit, and after storage, the vehicle-mounted measuring and displaying system updates the display state to 'data storage end', and the test of the currently tested carriage is finished;
and step ten, repeating the step two to the step nine, and sequentially testing the next carriage until all the carriages of the tested vehicle are tested, wherein the test result is shown in fig. 4.
Claims (1)
1. A rail vehicle electromagnetic radiation multi-parameter cooperative test method is characterized by comprising the following steps:
firstly, selecting a section of straight track section on the ground beside the track to arrange a set of ground receiving control system, symmetrically arranging a set of position sensing sensor system at the position L away from the two sides of the test antenna, and respectively arranging a set of vehicle-mounted measuring and displaying system on the head driver stations at the two ends of the vehicle to be measured; the ground receiving control system comprises a test antenna used for measuring electromagnetic radiation, a receiver, a first logic control and display unit, a first wireless communication module and a first power supply module, and the ground receiving control system measures the electromagnetic radiation data of the vehicle through the test antenna and realizes the setting of test instructions and test parameters and the storage and display of the electromagnetic radiation data of the vehicle through the first logic control and display unit; the position perception sensor system comprises a second power supply module, a position perception sensor, a second wireless communication module and a logic control unit, the position perception sensor system controls the position perception sensor to obtain the position information of the detected vehicle and the position where the head of the detected vehicle arrives through the logic control unit, and controls the second wireless communication module to inform the vehicle-mounted measuring and displaying system of the position information; the vehicle-mounted measuring and displaying system comprises a third power supply module, an acceleration sensor, a speed sensor, a third wireless communication module and a second logic control and displaying unit, the vehicle-mounted measuring and displaying system controls the acceleration sensor and the speed sensor to measure the acceleration and the speed data of the measured vehicle in real time through the second logic control and displaying unit, controls the third wireless communication module to realize the real-time communication between the measured data and the ground receiving control system, and guides a driver to perform train test operation through a display interface;
secondly, taking the position of a test antenna of the ground receiving control system as a reference, facing the vehicle to be tested, and setting a left side position and a right side position along the advancing direction of the vehicle to be tested; the test operator under the vehicle receives the first logic control and display of the control system through the groundThe display unit inputs the length l of each carriage of the tested vehicle and needs to test the Nth carriage on the left side or the right side, the vehicle head is taken as the 1 st carriage, and N is taken
n is the number of marshalling of the detected vehicle, and the n is an even number which is greater than 2 and is a natural number;
starting power supplies of the ground receiving control system, the position sensing sensor system and the vehicle-mounted measuring and displaying system, updating display units of the ground receiving control system and the vehicle-mounted measuring and displaying system, and initializing set parameters and time synchronously;
step four, the vehicle-mounted measuring and displaying system positioned at the driver station at the head of the tested vehicle can display the test instruction of the ground receiving control system in real time, a driver pushes the handle to a corresponding position according to the displayed test instruction and starts the vehicle-mounted measuring and displaying system at the initial acceleration required by the test, and the vehicle-mounted measuring and displaying system acquires the acceleration and speed signals of the tested vehicle in real time through the acceleration sensor and the speed sensor and keeps wireless communication with the ground receiving control system in real time; when the collecting speed does not reach the initial speed v required by the test0Or has exceeded v0Meanwhile, the state displayed by the vehicle-mounted measuring and displaying system is 'please accelerate' or 'please decelerate'; when the train speed reaches the initial speed v required by the test0In time, the vehicle-mounted measurement and display system updates the display state to be 'speed is correct, please to coast', and the initial speed v0Need to be less than the test standard velocity vs；
Step five, detecting whether the vehicle head reaches a position with a distance L from one side of the test antenna by using a position sensing sensor system; when the vehicle head is detected, the position perception sensor system is communicated with the vehicle-mounted measuring and displaying system, and the speed sensor in the vehicle-mounted measuring and displaying system judges whether the vehicle to be detected reaches the initial speed v required by the test0If the initial velocity v is reached0The vehicle-mounted measuring and displaying system updates the display state to be 'preparation interval, correct speed and please walk down', reminds the driver of entering the preparation interval and is about to start the testThe ground receiving control system automatically starts to record the vehicle electromagnetic radiation data measured by the test antenna; if the speed value measured by the speed sensor does not reach the initial speed v required by the test0The vehicle-mounted measuring and displaying system updates the display state to be 'speed has error, please retry', reminds a driver that the operation speed does not meet the requirement, the measured vehicle needs to be returned to the starting point position, then the initial acceleration is increased to restart, and the vehicle is driven according to the fourth step to the fifth step until the vehicle-mounted measuring and displaying system updates the display state to be 'preparation interval, speed is correct, please go on lazily';
step six, after the tested vehicle enters the preparation interval, a second logic control and display unit of the vehicle-mounted measurement and display system can calculate the time parameter t of the timer according to the setting of the tester before the test1：
Wherein: n represents that the current test is the Nth carriage; l is the length of each carriage; v. of0Initial speed required for testing; l is the distance between the position sensing sensor system and the test antenna;
step seven, time t1After the second, the Nth compartment of the tested vehicle reaches the position of the test antenna, the vehicle-mounted measurement and display system updates the display state to 1/3 traction acceleration, a driver pushes a handle to a position about 1/3 traction, and at the moment, a speed sensor and an acceleration sensor acquire vehicle state parameters in real time; if the acceleration sensor detects that the acceleration is too large or too small, namely the traction force is not 1/3 to accelerate, the vehicle-mounted measuring and displaying system updates the display state to be 'please adjust to 1/3 traction force', and informs a driver that the operation is wrong and the adjustment is needed; if the acceleration sensor detects that the acceleration is in the 1/3 traction acceleration range, the tested vehicle will start to test the required initial speed v0Reach test standard velocity vs；
Step eight, when the speed of the tested vehicle reaches the test standard speed vsThen, the vehicle-mounted measuring and displaying system updates the display stateTo "speed is correct, please coast", the second logic control and display unit will set the timer time parameter t according to the input value of the tester before the test2(ii) a Time t2After the second, the vehicle-mounted measuring and displaying system updates the display state to be the maximum service brake state until the measured vehicle stops; when a speed sensor and an acceleration sensor of the vehicle-mounted measuring and displaying system detect that the detected vehicle stops, the position sensing sensor system confirms whether the detected vehicle is detected for 4 times; if the detected vehicle is detected for 4 times, the vehicle-mounted measuring and displaying system updates the display state to be 'test end', informs a driver that the whole train of vehicles has run out of the test range, and ends the test; if the train is not detected for 4 times, the updating display state of the vehicle-mounted measuring and displaying system is 'please move the train, the test is not finished', a driver is informed that the whole train does not completely run out of the test range, and the train needs to continue to run forwards at a low speed until the updating display state of the vehicle-mounted measuring and displaying system is 'test finished';
step nine, when the display state of the vehicle-mounted measuring and displaying system is 'test end', the ground receiving control system stores the electromagnetic radiation data acquired by the test through the first logic control and displaying unit, and after storage, the vehicle-mounted measuring and displaying system updates the display state to 'data storage end', and the test of the currently tested carriage is finished;
and step ten, repeating the step two to the step nine, and sequentially testing the next carriage until all carriages of the tested vehicle are tested.
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