CN202166434U - Vehicle-mounted data acquisition system for maintaining track line-shape - Google Patents
Vehicle-mounted data acquisition system for maintaining track line-shape Download PDFInfo
- Publication number
- CN202166434U CN202166434U CN2011202250874U CN201120225087U CN202166434U CN 202166434 U CN202166434 U CN 202166434U CN 2011202250874 U CN2011202250874 U CN 2011202250874U CN 201120225087 U CN201120225087 U CN 201120225087U CN 202166434 U CN202166434 U CN 202166434U
- Authority
- CN
- China
- Prior art keywords
- signal
- card
- digital
- vehicle
- data collecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The utility model relates to a vehicle-mounted data acquisition system for maintaining track line-shape, being characterized in that: a corresponding DAC (digital-to-analogue conversion) card receives an air gap signal and a speed signal for performing RS-485 decoding and analog quantity conversion; signal filtering amplification for the received accelerated speed signal is performed by a signal conditioning card, and RS-485 decoding for a locating signal is performed too; and the processed signals enter into a corresponding data acquisition card together for synchro acquisition. The vehicle-mounted data acquisition system for maintaining track line-shape provided by the utility model is a vehicle-mounted data acquisition system based on a PXI bus and integrated with power-supply, DAC, signal processing, signal synchro acquisition and software-control, having the advantages of high precision, high integrated level, stability and reliability, guaranteeing reliable implementation for data acquisition of various sensor signals of multi channels, and providing data support for maintaining line-shape of a runway track.
Description
Technical field
The utility model relates to a kind of vehicle carried data collecting system, particularly a kind of vehicle carried data collecting system that is used for the linear maintenance of track circuit.
Background technology
Track traffic is few because of its land used, capacity is big, speed is fast, noise is few and low power consumption and other advantages obtains very fast development, but in locomotive operation and line construction, track will produce irregularity inevitably.Track irregularity is meant the deviation of track geometry shape and locus thereof, mainly comprise orbital direction, just, irregularity such as level.Track irregularity not only can influence the stability and the comfort level of vehicle operating, also can produce very big influence to road speed, even also possibly cause damage to equipment.The irregularity of research track is strengthened the linear maintenance of track, is the core of line management and maintenance.
A kind of effective method of measuring the irregularity of track is exactly some sensors (like acceleration transducer) to be installed the irregularity of level and vertical direction is detected on vehicle.Detection method to track irregularity has all obtained certain progress both at home and abroad; But because the various sensor signals that are used to detect are comparatively complicated; The often existing simulating signal that needs conditioning to amplify in the signal; The digital signal (like the RS485 signal) of being convenient to long-distance transmissions is arranged again; And the portability of precision, high-speed synchronous property and the acquisition system of various collecting sensor signals etc. is required high, the effectively vehicle carried data collecting system that is used for the linear maintenance of rail vehicle circuit of neither one still can integrate multiple sensor and power supply, digital-to-analog conversion, signal condition, signal synchronous collection and software control function at present.
The utility model content
The purpose of the utility model provides a kind of vehicle carried data collecting system based on the PXI bus that integrates multiple sensor and power supply, digital-to-analog conversion, signal condition, signal synchronous collection and software control; It can the synchronous acquisition multiple sensor simulation and digital signal, be used for irregularity and detect and the linear maintenance of track circuit.
In order to achieve the above object; The technical scheme of the utility model provides a kind of vehicle carried data collecting system that is used for the linear maintenance of track circuit; Its with vehicle on multiple sensor be connected, receive, handle and the sensor signal of its digital quantity exported separately of synchronous acquisition or analog quantity;
Said multiple sensor comprises gap sensor, acceleration transducer, speed pickup and alignment sensor;
Corresponding with it, said data acquisition system (DAS) comprises:
Some digital-to-analog conversion cards, its correspondence receive each road air gap signal of multichannel gap sensor output and each road rate signal of multichannel speed pickup output, and the signal of those digital quantities is decoded and digital-to-analog conversion;
The signal condition card, it is connected with said acceleration transducer, and the acceleration signal of the analog quantity of its output is nursed one's health amplification; Also be connected, the positioning signal of the digital quantity of its output is decoded with said alignment sensor;
The plurality of data analog input card, its respectively with said some digital-to-analog conversion cards and said signal condition card connection, the signal after it is handled respectively carries out synchronous acquisition.
Also be included as said digital-to-analog conversion card, signal condition card, data collecting plate card in the said acquisition system, the hardware platform based on the PXI bus is provided, it further includes the PXI controller that carries out executed in parallel control.
The output of said gap sensor and speed pickup be the RS-485 signal;
Each said digital-to-analog conversion card further comprise successively connect with lower component:
485 converters, its correspondence receives sensor signal of said RS-485, and converts those 485 differential signals into Transistor-Transistor Logic level;
PLD, its signal to said 485 converters output carries out the RS-485 decoding, and the state indication of this digital-to-analog conversion card is provided;
Analog-digital chip after its signal to said PLD output carries out digital-to-analog conversion, sends the data collecting plate card of corresponding analog quantity to follow-up correspondence.
Wherein one tunnel signalling channel of said signal condition card is carried out filtering to the said acceleration signal of analog quantity and is amplified;
Wherein another road signalling channel of said signal condition card also further comprises:
485 converters, its witness marker partitioned signal to the RS-485 of said alignment sensor output carries out level conversion;
PLD after its signal to said 485 converters output is done identification and broadening, is sent to the data collecting plate card of follow-up correspondence.
Said PXI hardware platform also is provided with PXI cabinet, power supply and input-output device; Said input-output device comprises the display and the keyboard of integrated setting.
The all hardware equipment of said acquisition system is placed in the vehicle-mounted rack.
Compared with prior art; The said vehicle carried data collecting system of the utility model; Its advantage is: the utility model is based on the portable vehicle loading system of PXI bus, and it receives the multiple sensor signal that gap sensor, acceleration transducer, speed pickup and alignment sensor provide on the vehicle: wherein when vehicle '; Air gap signal and rate signal get into corresponding digital-to-analog conversion card, carry out RS-485 decoding and analog quantity and transform; The conditioning of acceleration signal entering signal sticks into capable signal filtering and amplifies; The conditioning of positioning signal entering signal sticks into capable RS-485 decoding.Then, above-mentioned all treated signals get into the synchronous acquisition that corresponding data collecting plate card carries out each road signal together.The utility model has solved decoding, digital-to-analog conversion, conditioning amplification and the synchronous acquisition of multichannel different sensors signal on the rail vehicle; Have precision height, integrated level height and reliable and stable beneficial effect; For the reliable enforcement of the data acquisition of multichannel different sensor signal provides guarantee, for the linear maintenance of track girder the active data support is provided simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of the said vehicle carried data collecting system of the utility model;
Fig. 2 is the functional block diagram of digital-to-analog conversion card in the said vehicle carried data collecting system of the utility model;
Fig. 3 is the functional block diagram of signal condition card in the said vehicle carried data collecting system of the utility model.
Embodiment
Embodiment below in conjunction with description of drawings the utility model.
As shown in Figure 1; The said vehicle carried data collecting system that is used for the linear maintenance of track circuit of the utility model; When vehicle '; Receive the multiple sensor signal that gap sensor, acceleration transducer, speed pickup and alignment sensor provide on the vehicle: wherein, each road air gap signal of input links to each other with one of them digital-to-analog conversion card 10, after RS-485 decoding and digital-to-analog conversion, inputs to one of them data collecting plate card 30; Each road rate signal of input links to each other with another digital-to-analog conversion card 10, after RS-485 decoding and digital-to-analog conversion, inputs to another data collecting plate card 30; Each the road acceleration signal and the positioning signal of input link to each other with signal condition card 20, and each road signal of process signal condition inputs to the 3rd data analog input card 30 again; Carry out the synchronous acquisition of above-mentioned each road signal by said data collecting plate card 30.Said digital-to-analog conversion card 10, signal condition card 20, data collecting plate card 30 all are based on the PXI bus, so a PXI controller 40 also is provided in this acquisition system.
Concrete, cooperating referring to Fig. 1, shown in Figure 2, Fig. 2 is the functional block diagram of said digital-to-analog conversion card 10.In the above-mentioned multiple sensor, the output of gap sensor and speed pickup be the RS-485 signal; The sensor signal of those RS-485 gets into after the corresponding digital-to-analog conversion card 10, earlier separately through one 485 converter 11, converts 485 differential signals into Transistor-Transistor Logic level; To input to CPLD PLD 12 through the signal after the conversion again, to realize the RS-485 decoding; N road signal after will reading then is sent to n sheet DA analog-digital chip 13 with series form, carries out exporting 30 collections of corresponding analog quantity confession data collecting plate card after the digital-to-analog conversion; Simultaneously through CPLD PLD 12 indication that does well.
In the present embodiment, 485 converters 11 adopt the ISL83485 chip of Intersil company.CPLD PLD 12 adopts the EPM1270 chip, and EPM1270 is the MAXII PLD that ALTERA company releases.DA analog-digital chip 13 adopts the DAC8512 chip of AD company, and DAC8512 has built-in reference voltage source, uses single+5V power supply power supply, and 3 line formula serial input interfaces are 12 figure place mould conversion chips of voltage output type.
Cooperation is referring to Fig. 1, shown in Figure 3, and Fig. 3 is the functional block diagram of said signal condition card 20.In the above-mentioned multiple sensor, Multichannel Acceleration sensor output be simulating signal; Those acceleration signals of 20 pairs of inputs of signal condition card carry out filtering and amplify.In the above-mentioned multiple sensor, the witness marker partitioned signal of alignment sensor output RS-485, then 485 converters 21 of this signal condition card 20 of input are done level conversion earlier, and then input to CPLD PLD 22 and do signal identification and broadening; Signal after the conditioning exports corresponding data collecting plate card 30 to the most at last.
In the present embodiment, signal condition card 20 adopts the SCC-LP04 binary channels low pass filter blocks of the SCC-LP series of NI company.485 converters 21 adopt the ISL83485 chip of Intersil company.CPLD PLD 22 also adopts the EPM1270 chip, and EPM1270 is the MAXII PLD that ALTERA company releases.
In addition, in the present embodiment, carry out the said data collecting plate card 30 of signal synchronous collection, adopt the PXI-4472B data collecting plate card of NI company, it has the dynamic signal acquisition module that 24 vibrations of 8 passages are optimized.
Through a PXI hardware platform, the PXI cabinet of setting, PXI controller, power supply and integrated display and keyboard etc. are for above-mentioned each integrated circuit board provides the platform based on the PXI bus in the utility model.Said PXI controller adopts the NI PXI-8106 PXI controller of NI company, and it has the 2 Duo T7400 dual core processors based on 2.16 GHz Intel Core, thereby can provide the executed in parallel ability to realize measurement accurately and reliably.
The above-mentioned all hardware equipment of said acquisition system all is placed in the portable car-mounted rack.To the acquisition software that said acquisition system is carried out system control, be based on the LABVIEW exploitation.
In sum; The said vehicle carried data collecting system of the utility model; Be based on the portable vehicle loading system of PXI bus, it receives the multiple sensor signal that gap sensor, acceleration transducer, speed pickup and alignment sensor provide on the vehicle: wherein when vehicle '; Air gap signal and rate signal get into corresponding digital-to-analog conversion card 10, carry out RS-485 decoding and analog quantity and transform; Acceleration signal entering signal conditioning card 20 carries out signal filtering and amplifies; Positioning signal entering signal conditioning card 20 carries out the RS-485 decoding.Then, above-mentioned all treated signals get into the synchronous acquisition that corresponding data collecting plate card 30 carries out each road signal together.The utility model has solved decoding, digital-to-analog conversion, conditioning amplification and the synchronous acquisition of multichannel different sensors signal on the rail vehicle; Have precision height, integrated level height and reliable and stable beneficial effect; For the reliable enforcement of the data acquisition of multichannel different sensor signal provides guarantee, for the linear maintenance of track girder the active data support is provided simultaneously.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (6)
1. a vehicle carried data collecting system that is used for the linear maintenance of track circuit is characterized in that, multiple sensor is connected on said data acquisition system (DAS) and the vehicle, receives, handles and the sensor signal of its digital quantity exported separately of synchronous acquisition or analog quantity;
Said multiple sensor comprises gap sensor, acceleration transducer, speed pickup and alignment sensor;
Corresponding with it, said data acquisition system (DAS) comprises:
Some digital-to-analog conversion cards (10), its correspondence receive each road air gap signal of multichannel gap sensor output and each road rate signal of multichannel speed pickup output, and the signal of those digital quantities is decoded and digital-to-analog conversion;
Signal condition card (20), it is connected with said acceleration transducer, and the acceleration signal of the analog quantity of its output is nursed one's health amplification; Also be connected, the positioning signal of the digital quantity of its output is decoded with said alignment sensor;
Plurality of data analog input card (30), it is connected with said some digital-to-analog conversion cards (10) and said signal condition card (20) respectively, and the signal after it is handled respectively carries out synchronous acquisition.
2. vehicle carried data collecting system according to claim 1 is characterized in that,
Also be included as said digital-to-analog conversion card (10), signal condition card (20), data collecting plate card (30) in the said acquisition system, the hardware platform based on the PXI bus is provided, it further includes the PXI controller (40) that carries out executed in parallel control.
3. like the said vehicle carried data collecting system of claim 2, it is characterized in that,
The output of said gap sensor and speed pickup be the RS-485 signal;
Each said digital-to-analog conversion card (10) further comprise successively connect with lower component:
485 converters (11), its correspondence receives sensor signal of said RS-485, and converts those 485 differential signals into Transistor-Transistor Logic level;
PLD (12), its signal to said 485 converters (11) output carries out the RS-485 decoding, and the state indication of this digital-to-analog conversion card (10) is provided;
Analog-digital chip (13) after its signal to said PLD (12) output carries out digital-to-analog conversion, sends the data collecting plate card (30) of corresponding analog quantity to follow-up correspondence.
4. like the said vehicle carried data collecting system of claim 3, it is characterized in that,
Wherein one tunnel signalling channel of said signal condition card (20) is carried out filtering to the said acceleration signal of analog quantity and is amplified;
Wherein another road signalling channel of said signal condition card (20) also further comprises:
485 converters (21), its witness marker partitioned signal to the RS-485 of said alignment sensor output carries out level conversion;
PLD (22) after its signal to said 485 converters (21) output is done identification and broadening, is sent to the data collecting plate card (30) of follow-up correspondence.
5. like claim 2 or 4 said vehicle carried data collecting systems, it is characterized in that,
Said PXI hardware platform also is provided with PXI cabinet, power supply and input-output device; Said input-output device comprises the display and the keyboard of integrated setting.
6. like the said vehicle carried data collecting system of claim 5, it is characterized in that,
The all hardware equipment of said acquisition system is placed in the vehicle-mounted rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202250874U CN202166434U (en) | 2011-06-29 | 2011-06-29 | Vehicle-mounted data acquisition system for maintaining track line-shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202250874U CN202166434U (en) | 2011-06-29 | 2011-06-29 | Vehicle-mounted data acquisition system for maintaining track line-shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202166434U true CN202166434U (en) | 2012-03-14 |
Family
ID=45802253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202250874U Expired - Lifetime CN202166434U (en) | 2011-06-29 | 2011-06-29 | Vehicle-mounted data acquisition system for maintaining track line-shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202166434U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019230A (en) * | 2012-12-16 | 2013-04-03 | 重庆望江工业有限公司 | Digital type alternating current servo system testing system |
| CN105374196A (en) * | 2014-08-27 | 2016-03-02 | 武汉普创数码科技有限公司 | Data acquisition device and system based on six-component wheel force transducer |
| CN105548717A (en) * | 2015-12-11 | 2016-05-04 | 湖北三江航天万峰科技发展有限公司 | Electrical parameter testing device based on virtual instrument technology |
| CN106200476A (en) * | 2016-07-31 | 2016-12-07 | 哈尔滨理工大学 | A kind of data acquisition based on DSP and wireless transmitting system |
-
2011
- 2011-06-29 CN CN2011202250874U patent/CN202166434U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019230A (en) * | 2012-12-16 | 2013-04-03 | 重庆望江工业有限公司 | Digital type alternating current servo system testing system |
| CN105374196A (en) * | 2014-08-27 | 2016-03-02 | 武汉普创数码科技有限公司 | Data acquisition device and system based on six-component wheel force transducer |
| CN105548717A (en) * | 2015-12-11 | 2016-05-04 | 湖北三江航天万峰科技发展有限公司 | Electrical parameter testing device based on virtual instrument technology |
| CN106200476A (en) * | 2016-07-31 | 2016-12-07 | 哈尔滨理工大学 | A kind of data acquisition based on DSP and wireless transmitting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202166434U (en) | Vehicle-mounted data acquisition system for maintaining track line-shape | |
| CN106394606B (en) | A kind of railway car wheel loses circle detection method and detection device | |
| CN201583271U (en) | Machine for continuously measuring slope rating of road | |
| CN108195451B (en) | Processing method for continuous automatic weighing of different types of railroad scales | |
| CN102226932B (en) | Vehicle speed measuring method based on radio frequency identification technology | |
| CN106444505A (en) | Multichannel synchronizing signal collection system | |
| CN205664920U (en) | Modular whole car weighing apparatus weighing system | |
| CN105115742B (en) | A kind of superconducting magnetic levita vehicle test run key parameter vehicle-mounted detecting system | |
| CN103616064A (en) | Long-table-face dynamic rail weighbridge weighing system | |
| CN206307052U (en) | A kind of railway car wheel loses loop truss device | |
| CN102879134A (en) | Wireless detection device for train wheel-rail contact force | |
| CN100489467C (en) | Tri-platforms electronic rail weigher system and its data processing method | |
| CN202433036U (en) | Bridge health monitoring system based on wireless sensor networks | |
| CN202435329U (en) | Rotary transformer decoding processing device based on single FPGA (Field Programmable Gate Array) | |
| CN102902220A (en) | Real-time acquisition and processing device of laser doppler vibration meter signals | |
| CN202471752U (en) | Train speed determining device | |
| CN205374585U (en) | Current collection device | |
| CN202274918U (en) | Automatic vehicle position detection device on static rail weighbridge | |
| CN201844874U (en) | Embedded portable train weighting instrument | |
| CN203687928U (en) | Dual-axis gradient testing device with high stability and high precision | |
| CN107806909B (en) | A kind of impulse type cereal flow transducer signal acquisition and processing apparatus | |
| CN201740627U (en) | Electric measurement device for dynamic balance | |
| CN2858734Y (en) | Structural inspecting vehicle under rail | |
| CN102901551B (en) | Dynamic detection device for confirming raw material warehousing in train | |
| CN202205219U (en) | Ground identification device for universal railway train number |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SHANGHAI MAGNETIC SUSPENSION COMMUNICATION ENGINEERING TECHNOLOGY RESEARCH CENTE Effective date: 20150109 Owner name: TONGJI UNIVERSITY Free format text: FORMER OWNER: SHANGHAI MAGLEV TRANSPORTATION DEVELOPMENT CO., LTD. Effective date: 20150109 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201204 PUDONG NEW AREA, SHANGHAI TO: 200092 YANGPU, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150109 Address after: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Patentee after: Tongji University Address before: 201204 Pudong New Area, Longyang Road, No. 2520, Patentee before: Shanghai Maglev Transportation Development Co., Ltd. Patentee before: Shanghai Magnetic Suspension Communication Engineering Technology Research Cente |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
|
| CX01 | Expiry of patent term |