CN102818954A - Electromagnetic radiation emission real-time measurement system for high-speed train - Google Patents
Electromagnetic radiation emission real-time measurement system for high-speed train Download PDFInfo
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Abstract
The invention provides an electromagnetic radiation emission real-time measurement system for a high-speed train and relates to the technical field of the wireless electric signal and electromagnetic radiation emission measurement and the interference source positioning. The system comprises a vehicle-mounted measurement subsystem, a ground measurement subsystem, a vehicle-mounted vehicle positioning subsystem and a vehicle ground wireless transmission subsystem, wherein the vehicle-mounted measurement subsystem is used for carrying out real-time statistical parameter measurement on the electromagnetic interference inside a high-speed train vehicle by a multi-channel measurement receiver, extracting and classifying the electromagnetic interference with different characteristics and positioning source equipment emitting the electromagnetic interference inside the vehicle by the mode identification; the ground measurement subsystem is used for measuring real-time electromagnetic radiation emission signals by the multi-channel measurement receiver and filtering interference signals in the real-time electromagnetic radiation emission signals, which are from the outside of the high-speed train by utilizing blind signals; the vehicle-mounted vehicle positioning subsystem is used for acquiring real-time position and speed information of the high-speed train vehicle by utilizing a GPS (Global Positioning System) cooperative positioning technology; and the vehicle ground wireless transmission subsystem is used for implementing the time and space synchronization between the vehicle-mounted measurement subsystem and the ground measurement subsystem.
Description
Technical field
The present invention relates to radio signal, electromagnetic radiation measurement and interference source field of locating technology, relate in particular to a kind of electromagnetic radiation real-time measurement system to EMU.
Background technology
Along with the development of high-speed railway, the Electro Magnetic Compatibility of high speed motor car group equipment becomes one of direct key factor that influences its operation security property.The a lot of major accidents that take place in recent years show that if the design of the Electro Magnetic Compatibility of EMU is bad or do not reach due standard, the key equipment in the system just may cause catastrophic consequence owing to electromagnetic interference (EMI) causes fault.
The electromagnetic radiation measurement of electric/electronic device is one of research electric and electronic system, the interference of equipment and major technique means of anti-interference and emc issue, and relevant experimental data collection and analysis-by-synthesis are to study essential condition.Electromagnetic radiation field is distributed in the whole space that energy can be transferred to openly, and therefore, in the imperfect environment in outfield, the radiation signal of measured object receives the interference of existing other signals in the environment.So the electromagnetic radiation measuring method requires measuring process in special electromagnetic compatibility test place, to carry out at present, like anechoic chamber, or open area test site.But, to the EMU vehicle, the angle that no matter still drops into from economy from the angle of technology, it all is infeasible setting up anechoic chamber, or the open area test site that matches and carrying out the electromagnetic radiation experiment.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetic radiation real-time measurement system to EMU, the electromagnetic radiation that can solve the EMU vehicle is measured in real time.
In order to reach above purpose, a kind of electromagnetic radiation real-time measurement system to EMU comprises:
Vehicle-mounted measurement subsystem: the electromagnetic interference (EMI) of EMU vehicle interior is carried out the real-time statistics parameter measurement through the multi-channel measurement receiver; Extract and the electromagnetic interference (EMI) of classification different characteristic, send the source device of electromagnetic interference (EMI) through pattern-recognition positioned vehicle inside;
The ground survey subsystem: measure real-time electromagnetic radiation signal through the multi-channel measurement receiver, utilizing Blind Source to discern will be wherein from the undesired signal filtering outside the EMU; On-vehicle vehicle positioning subsystem: utilize GPS colocated technology, obtain real-time position of EMU vehicle and velocity information;
Car-ground radio transmission subsystem: realize time and spatial synchronization between vehicle-mounted measurement subsystem and the ground survey subsystem.
Further; As a kind of preferred; Vehicle-mounted measurement subsystem comprises a hyperchannel electromagnetic radiation real-time statistics parameter measurement unit at least; Electromagnetic radiation interference statistics parameter feature identification and extraction unit, a pattern-recognition and an interference source positioning unit based on the interference characteristic database, three sequence of unit connect.
Further, as a kind of preferred, a plurality of hyperchannel electromagnetic radiation real-time statistics parameter measurements unit receiving sensor is installed on the diverse location of vehicle.
Further, as a kind of preferred, the ground survey subsystem comprises the real-time measuring receiver of a hyperchannel electromagnetic radiation unit at least, an electromagnetic radiation background denoising unit based on the Blind Source recognition technology, and two sequence of unit connect.
Further, as a kind of preferred, the ground survey subsystem is installed on EMU orbit 30m at least outward, distance 10m at least between the real-time measuring receiver cell sensor of a plurality of hyperchannel electromagnetic radiation installation site.
Further, as a kind of preferred, the on-vehicle vehicle positioning subsystem comprises an EMU vehicle locating unit based on the GPS technology at least.
Further, as a kind of preferred, the GPS bearing accuracy is less than 10m, and locating periodically is less than 1ms.
Further, as a kind of preferred, the car-ground radio transmission subsystem comprises an adaptive Doppler frequency offset compensation element at least.
Further, as a kind of preferred, the sender of car-ground radio transmission subsystem is installed on the EMU vehicle, and receiver is installed in the ground survey system.
Further; As a kind of preferred; The rate of information throughput of car-ground radio transmission subsystem is greater than 10kbps; The information transmission time delay is less than 1ms; The information transmission distance is greater than 10km, and the precise time that the on-vehicle vehicle positioning subsystem provides, vehicle location and velocity information are sent to the ground survey subsystem through the car-ground radio transmission subsystem, the measurement data result of vehicle-mounted measurement subsystem and ground survey subsystem mark on-vehicle vehicle positioning subsystem provides in the graphical demonstration of instrument precise time, vehicle location and velocity information.
At first; The present invention has broken the theory in original special test place in the electromagnetic compatibility field; Realized the electromagnetic radiation experiment under abominable on-the-spot electromagnetic environment; Broken through original high speed, moved, the electromagnetic radiation experiment restriction of epimegetic electrical system, and for example can realize the additional functionality of interference source location in real time.
Secondly, the present invention can experimentize at various site environments neatly, has saved special-purpose place investment of a large amount of electromagnetic compatibilities and large-area construction land demand.With 10 meters method anechoic chamber,s of tradition is example; At least needing a volumes be 33 meters long, 21 meters wide, 10 meters high spaces, need be steel plate welding or the hexahedron that is assembled into all around, inside, darkroom apply ointment or plaster ferrite wave-absorbing material or composite wave-suction material; And need high operating technique; Supporting in addition instrument and equipment, general investment needs about 50,000,000 Renminbi, and this only can satisfy the radiation field experiment condition for the pony car vehicle.If set up more large-scale anechoic chamber,, not only difficulty of construction significantly increases, and investment will become geometric growth.And method provided by the invention not only need not built special-purpose experiment places such as huge anechoic chamber; And can adjust the structure and the parameter of whole device flexibly, thereby realize the equipment of different specific demands and the radiation field experiment of system according to the singularity of system.
The 3rd, from present domestic situation, because China's industry integral level falls behind, the understanding of importance deficiency to Electro Magnetic Compatibility causes the unsound imperfection of some electromagnetic compatibility standard, has limited China's electric/electronic device competitive power of export.And it is very strict with assessment abroad to the detection of the electromagnetic compatibility that relates to safe electrical system; The present invention can provide important experiment and assessment foundation for the outlet of large electric system equipments such as China's automobile, rolling stock, Aero-Space, guarantees the market access and the trade equity of product.
Description of drawings
When combining accompanying drawing to consider; Through with reference to following detailed, can more completely understand the present invention better and learn wherein many attendant advantages easily, but accompanying drawing described herein is used to provide further understanding of the present invention; Constitute a part of the present invention; Illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute to improper qualification of the present invention, wherein:
Fig. 1 is the embodiment block diagram of measuring system of the present invention;
Fig. 2 is the synoptic diagram of the vehicle-mounted measurement subsystem structure of the present invention embodiment;
Fig. 3 is the synoptic diagram of ground survey subsystem structure embodiment of the present invention;
Fig. 4 is the synoptic diagram of the vehicle-mounted accurate positioning subsystem structure embodiment of the present invention;
Fig. 5 is the synoptic diagram of car-ground radio transmission subsystem structure embodiment of the present invention;
Fig. 6 is the synoptic diagram of measurement subsystem time and space synchronization scenario embodiment of the present invention.
Embodiment
Referring to figs. 1 through Fig. 6 embodiments of the invention are described.
For make above-mentioned purpose, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
As shown in Figure 1, a kind of electromagnetic radiation real-time measurement system to EMU comprises:
Vehicle-mounted measurement subsystem 1: the electromagnetic interference (EMI) of EMU vehicle interior is carried out the real-time statistics parameter measurement through the multi-channel measurement receiver; Extract and the electromagnetic interference (EMI) of classification different characteristic, send the source device of electromagnetic interference (EMI) through pattern-recognition positioned vehicle inside;
Ground survey subsystem 2: measure real-time electromagnetic radiation signal through the multi-channel measurement receiver, utilizing Blind Source to discern will be wherein from the undesired signal filtering outside the EMU;
On-vehicle vehicle positioning subsystem 3: utilize GPS colocated technology, obtain real-time position of EMU vehicle and velocity information;
Car-ground radio transmission subsystem 4: realize time and spatial synchronization between vehicle-mounted measurement subsystem 1 and the ground survey subsystem 2.
Surface em radiation signal collection analysis equipment utilization blind signal processing technology is accomplished the ELECTROMAGNETIC RADIATION SIGNATURE collection and the analysis of site environment high speed moving body; Mobile unit is accomplished the location of vehicle-mounted electromagnetic radiation source and the high precision speed-measuring location of specificity analysis and high-speed mobile unit, and gives uphole equipment with above-mentioned information through the vehicle-ground wireless communication system transmissions; Vehicle-ground wireless communication equipment is accomplished the synchronous transmission of the vehicle-mounted electromagnetic radiation source real-time transmission of information and the locating information that tests the speed.
Mobile unit is realized the interference source location according to the statistical property in electromagnetic interference source.The interference location early warning modular structure of vehicle-mounted measurement subsystem 1 is as shown in Figure 2, and it has comprised electromagnetic interference (EMI) property data base, interference locating module and the early warning module of moving body.Wherein, the statistical parameter of use mainly contains APD, CRD and PDD.Thereby the present invention directly carries out time domain measurement to harassing and wrecking such as electromagnetic noises in the envelope detection output of measuring receiver obtains each item statistical parameter.Sample information in the real-time measurement result of statistical parameter and the property data base is compared and mated, thereby confirm interference source equipment and position.
Ground survey subsystem 2 is as shown in Figure 3, and two receiver channels (between receiver 1 and 2, two receivers of receiver distance enough far, for example greater than 10m) line is with to be studied system's moving direction vertical, and the intersection point position is the reference position that is studied system.The real-time collection analysis equipment output of surface em radiation signal if sampling data are sent user's control end (UCC) and are shown (DISP) in real time after blind signal processing (BSP).
EMU vehicle positioning system 3 is as shown in Figure 4, adopts the dark array mode of GPS/INS to realize high-speed mobile system autonomous positioning, and locating information is sent to the data collection and analysis equipment of ground survey subsystem 2; Ground data collection analysis equipment self is stored corresponding positional information, and utilizes GPS to realize and the time synchronized of vehicle positioning system, further improves the relative position information precision.
Car-ground radio transmission subsystem 4 is as shown in Figure 5, comprises wireless environment (frequency spectrum) sensing module, vehicle-mounted transmitter module and signal processing module etc.Wherein, The major function of wireless environment (frequency spectrum) sensing module is that the electromagnetic environment of high-speed mobile system position is carried out " perception " (Spectrum Sensing); Detect the situation that takies, the electromagnetic interference (EMI) distribution situation of wireless frequency spectrum, and then the only working frequency range of choice of dynamical (frequency of operation) sends information such as high-speed mobile alliance to uphole equipment.The signal processing module major function is the result according to frequency spectrum perception, the radio environment characteristics that analysis high-speed mobile system belongs to, the systematic parameter (comprising concrete transmission frequency, transmitting time, modulation coding mode etc.) that finds the best.Vehicle-mounted transmitter module major function is that baseband signal is carried out DSSS and is modulated to radio frequency, after power amplification, filtering, launches through antenna.The ground receiver module comprises ground receiver module and data processing module.The ground receiver module converts the radiofrequency signal of receiving into baseband signal, and carries out demodulation, work decoding.Data processing module is further handled data recovered.
Measurement subsystem time and space synchronization scenario is as shown in Figure 6; Vehicle-mounted measurement subsystem 1 receives gps time information respectively with ground survey subsystem 2; On-vehicle vehicle positioning subsystem 3 sends temporal information when sending high-speed mobile system current position state information in the lump, and ground survey subsystem 2 utilizes the gps time information and vehicle-mounted measurement subsystem 1 time ratio that self receive that the Electromagnetic Test Results of high-speed mobile system at correspondence position exported in the back.
Though more than described embodiment of the present invention; But those skilled in the art is to be understood that; These embodiments only illustrate; Those skilled in the art can carry out various omissions, replacement and change to the details of said method and system under the situation that does not break away from principle of the present invention and essence.For example, merge the said method step, then belong to scope of the present invention to realize the identical result of essence thereby carry out the essence identical functions according to the identical method of essence.Therefore, scope of the present invention is only limited appended claims.
Claims (10)
1. the electromagnetic radiation real-time measurement system to EMU is characterized in that, comprising:
Vehicle-mounted measurement subsystem: the electromagnetic interference (EMI) of EMU vehicle interior is carried out the real-time statistics parameter measurement through the multi-channel measurement receiver; Extract and the electromagnetic interference (EMI) of classification different characteristic, send the source device of electromagnetic interference (EMI) through pattern-recognition positioned vehicle inside;
The ground survey subsystem: measure real-time electromagnetic radiation signal through the multi-channel measurement receiver, utilizing Blind Source to discern will be wherein from the undesired signal filtering outside the EMU;
On-vehicle vehicle positioning subsystem: utilize GPS colocated technology, obtain real-time position of EMU vehicle and velocity information;
Car-ground radio transmission subsystem: realize time and spatial synchronization between vehicle-mounted measurement subsystem and the ground survey subsystem.
2. the electromagnetic radiation real-time measurement system to EMU according to claim 1; It is characterized in that: said vehicle-mounted measurement subsystem comprises a hyperchannel electromagnetic radiation real-time statistics parameter measurement unit at least; Electromagnetic radiation interference statistics parameter feature identification and extraction unit; A pattern-recognition and an interference source positioning unit based on the interference characteristic database, three sequence of unit connect.
3. the electromagnetic radiation real-time measurement system to EMU according to claim 2, it is characterized in that: said a plurality of hyperchannel electromagnetic radiation real-time statistics parameter measurements unit receiving sensor is installed on the diverse location of vehicle.
4. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 1; It is characterized in that: said ground survey subsystem comprises the real-time measuring receiver of a hyperchannel electromagnetic radiation unit at least; Electromagnetic radiation background denoising unit based on the Blind Source recognition technology, two sequence of unit connect.
5. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 4; It is characterized in that: said ground survey subsystem is installed on EMU orbit 30m at least outward, distance 10m at least between the real-time measuring receiver cell sensor of a plurality of hyperchannel electromagnetic radiation installation site.
6. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 1, it is characterized in that, said on-vehicle vehicle positioning subsystem comprises an EMU vehicle locating unit based on the GPS technology at least.
7. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 4, it is characterized in that, said GPS bearing accuracy is less than 10m, and locating periodically is less than 1ms.
8. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 1, it is characterized in that, said car-ground radio transmission subsystem comprises an adaptive Doppler frequency offset compensation element at least.
9. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 1, it is characterized in that: the sender of said car-ground radio transmission subsystem is installed on the EMU vehicle, and receiver is installed in the ground survey system.
10. the electromagnetic radiation measuring method under the environment is thanksed for your hospitality in outfield according to claim 9, it is characterized in that, the rate of information throughput of said car-ground radio transmission subsystem is greater than 10kbps, and the information transmission time delay is less than 1ms, and the information transmission distance is greater than 10km.
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| CN103076502A (en) * | 2012-12-20 | 2013-05-01 | 北京交通大学 | System and method for collecting remote and synchronous measuring data of moving object target |
| CN105717372A (en) * | 2016-01-05 | 2016-06-29 | 中车南京浦镇车辆有限公司 | Train inside static magnetic field test and running state analysis apparatus and analysis method |
| CN107121602A (en) * | 2017-03-21 | 2017-09-01 | 广州小鹏汽车科技有限公司 | Vehicle-mounted central control system interference source finding method |
| CN109061316A (en) * | 2018-07-06 | 2018-12-21 | 中车长春轨道客车股份有限公司 | A kind of rail vehicle electromagnetic radiation multi-parameter collaboration test method |
| EP3705898A1 (en) * | 2019-03-07 | 2020-09-09 | Rohde & Schwarz GmbH & Co. KG | Measurement system for testing a system under test as well as measurement setup |
| CN114440931A (en) * | 2022-01-29 | 2022-05-06 | 重庆长安汽车股份有限公司 | Vehicle-mounted navigation positioning performance debugging method based on electromagnetic environment of whole vehicle |
| CN114646907A (en) * | 2021-12-24 | 2022-06-21 | 中铁二院工程集团有限责任公司 | Rail transit low-frequency magnetic field measuring method based on machine learning |
| CN115774165A (en) * | 2022-12-28 | 2023-03-10 | 东莞市斐石智联科技有限公司 | Electromagnetic compatibility testing method for power supply energy storage equipment |
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| CN105717372B (en) * | 2016-01-05 | 2019-03-29 | 中车南京浦镇车辆有限公司 | A kind of train inside magnetostatic field is tested and running state analysis device and analysis method |
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| CN114646907A (en) * | 2021-12-24 | 2022-06-21 | 中铁二院工程集团有限责任公司 | Rail transit low-frequency magnetic field measuring method based on machine learning |
| CN114646907B (en) * | 2021-12-24 | 2023-10-20 | 中铁二院工程集团有限责任公司 | Rail transit low-frequency magnetic field on-site measurement method based on machine learning |
| CN114440931A (en) * | 2022-01-29 | 2022-05-06 | 重庆长安汽车股份有限公司 | Vehicle-mounted navigation positioning performance debugging method based on electromagnetic environment of whole vehicle |
| CN115774165A (en) * | 2022-12-28 | 2023-03-10 | 东莞市斐石智联科技有限公司 | Electromagnetic compatibility testing method for power supply energy storage equipment |
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