CN201347528Y - Device for mentoring contact state of wheel track and system thereof - Google Patents
Device for mentoring contact state of wheel track and system thereof Download PDFInfo
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- CN201347528Y CN201347528Y CNU2008202341161U CN200820234116U CN201347528Y CN 201347528 Y CN201347528 Y CN 201347528Y CN U2008202341161 U CNU2008202341161 U CN U2008202341161U CN 200820234116 U CN200820234116 U CN 200820234116U CN 201347528 Y CN201347528 Y CN 201347528Y
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Abstract
The utility model provides a device for monitoring contact state of wheel track and a system thereof, wherein the device comprises a camera unit for collecting the video information of the contact state of wheels of a train with wheel tracks, a line information acquisition unit for obtaining the line information of the train, including line name, and/ or mileage and/ or driving speed, a processing unit for superposing the collected video information with the obtained line information, and a video information transmission unit for sending the video information which is superposed with the line information for a video monitoring device. The example of the utility model has the beneficial effects of providing the auxiliary judgment data for the line detection of a wheel track kinetics detecting system by monitoring the wheel and wheel track contact state of the train in the operation process, so as to increase the line diction accuracy of the wheel track kinetics detecting system.
Description
Technical field
The utility model is a kind of Apparatus and system of monitoring the wheel track contact condition about railway basis instrument Condition Monitoring Technology concretely.
Background technology
At present, the project that mainly detects of wheel rail dynamics detection system comprises parameters such as wheel track vertical force, lateral force, wheel shaft power, derailing coefficient and off-load rate.The wheel rail dynamics detection system adopts the dynamometry wheel to measuring vertical power and horizontal force.
When measuring vertical power, can be in wheel web inboard, the outside, select the appropriate location to arrange 16 foil gauges, form two full-bridge VA and VB, per two foil gauges are connected into a brachium pontis, each electric bridge is made up of inboard, 8 foil gauges in the outside, two electric bridge group bridge modes are identical, and different be with respect to 45 ° of the foil gauge position rotations of VA bridge the inside and outside lateral strain sheet of VB bridge, the output waveform of the bridge circuit waveform that obtains after revising that superposes is directly proportional with vertical load, and, thereby the continuous measurement of realization vertical force irrelevant with the angle position.
When measuring horizontal force, can be at the wheel web medial surface, select the appropriate location to arrange 16 foil gauges, form two full-bridge LA, LB, each electric bridge is made up of 8 foil gauges, per two foil gauges series connection forms an arm, and two bridge structure forms are identical, only is LB foil gauge position with respect to the foil gauge position of LA at the circumferencial direction half-twist.The output valve of two electric bridges is carried out mathematical computations can be obtained and the irrelevant horizontal force continuous measurement value in angle position.
The foil gauge signal of above-mentioned electric bridge is at first handled through dynamic strain indicator, digitlization is sent into computer and is obtained vertical force and horizontal force through digital filtering and mathematical analysis then, and measured values such as coefficient, off-load rate and wheel shaft power further can obtain derailing by mathematical operation.
Because any detection system all might be because unusual numerical value appears in the external world and internal interference discontinuity, therefore, when wheel-rail force occurring when unusual, above-mentioned wheel rail dynamics detection system can't entirely true judgement exceptional value produces by the true contact condition of wheel track is unusual, still is interfered by the wheel rail dynamics detection system and produces.
The utility model content
The purpose of this utility model is, a kind of Apparatus and system of monitoring the wheel track contact condition is provided, by the wheel track contact condition of monitoring in the train travelling process, and the auxiliary judge data that provide for the wireline inspection of wheel rail dynamics detection system.
To achieve these goals, the utility model embodiment provides a kind of device of monitoring the wheel track contact condition, and this device comprises: image unit is used to gather the video information of the wheel and the track contact condition of train; The line information acquiring unit is connected with image unit, is used to obtain the line information of train; Line information comprises line name and/or mileage and/or travel speed; Processing unit is connected with the line information acquiring unit, is used for the line information that will obtain and the video information of collection and superposes; The video information transmission unit is connected with processing unit, is used for transmitting to video surveillance devices the video information of stack line information.
To achieve these goals, the utility model embodiment also provides a kind of device of monitoring the wheel track contact condition, this device comprises: the video information receiving element, be used to receive the wheel of stack line information and the video information of track contact condition, line information road title and/or mileage and/or travel speed; Display unit is connected with video information order unit, is used to show the video information of line information of superposeing.
To achieve these goals, the utility model embodiment also provides a kind of system that monitors the wheel track contact condition, and this system comprises: image unit is used to gather the video information of the wheel and the track contact condition of train; The line information acquiring unit is used to obtain the line information of train; Line information comprises line name and/or mileage and/or travel speed; Processing unit is connected with the line information acquiring unit with image unit, is used for the line information that will obtain and the video information of collection and superposes; The video information transmission unit is connected with processing unit, is used to transmit the video information of stack line information; The video information receiving element is connected with the video information transmission unit, is used to receive the video information of stack line information; Display unit is connected with the video information receiving element, is used to show the video information of line information of superposeing.
The beneficial effect of the utility model embodiment is, the true contact condition of real time monitoring train wheel and track in running, and the line informations such as circuit name, mileage and speed that superpose in real time, in real time video image is recorded on the hard disk simultaneously, auxiliary judging basis is provided during for wheel rail dynamics detection system detection line, improves the accuracy of wheel rail dynamics detection system detection line.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the structured flowchart of the device of monitoring wheel track contact condition among the embodiment 1;
Fig. 2 is the structured flowchart of the device of monitoring wheel track contact condition among the embodiment 2;
Fig. 3 is the structured flowchart of the system that wheel track contact condition monitoring device constitutes in embodiment 1 and 2;
Fig. 4 is the structured flowchart of another system that wheel track contact condition monitoring device constitutes in embodiment 1 and 2;
Fig. 5 is the flow chart of monitoring wheel track contact condition method among the embodiment 3;
Fig. 6 is the flow chart of monitoring wheel track contact condition method among the embodiment 4;
Fig. 7 is the structured flowchart of the system of monitoring wheel track contact condition among the embodiment 5;
Fig. 8 is a real time line information processing flow chart among the embodiment 5;
Fig. 9 is the structured flowchart of the system of monitoring wheel track contact condition among the embodiment 6.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer,, the utility model is described in further details below in conjunction with embodiment and accompanying drawing.At this, exemplary embodiment of the present utility model and explanation thereof are used to explain the utility model, but not as to qualification of the present utility model.
The utility model embodiment provides a kind of device and system that monitors the wheel track contact condition.Below in conjunction with accompanying drawing the utility model is elaborated.
Embodiment 1
Present embodiment provides a kind of wheel track contact condition monitoring device 100, and as shown in Figure 1, this device 100 comprises: image unit 101, line information acquiring unit 102, processing unit 103 and video information transmission unit 104.Wherein, this image unit 102 is used to gather the video information of the wheel and the track contact condition of train.This line information acquiring unit 102 is used to obtain the line information of train; Line information comprises line name and/or mileage and/or travel speed.This processing unit 103 is used for video information of will gather and the line information that obtains stack.This video information transmission unit 104 is used for the video information to video surveillance devices transmission stack line information.
In the present embodiment, processing unit 103 can be an analog video signal with the video information after video information of gathering and the line information stack of obtaining, those skilled in the art can be according to the content of present embodiment, the video information of the stack line information of processing unit 103 output is encoded, be converted to data signal, data signal after will changing again is packaged as digital IP signal, by the switch in the communication network, digital IP signal is transferred to long-range video surveillance devices by wired and/or wireless mode plays and store.
Those skilled in the art according to the content that present embodiment discloses, carry out multiple variation to the technical scheme of the wheel track contact condition monitoring device in the present embodiment.For example: image unit 101 can be realized by video camera, the real-time video information of the wheel of collection train and the contact condition of track; Line information acquiring unit 102, processing unit 103 and video information transmission unit 104 can be realized by character adder, obtain the real time line information of train and with the stack of real time line information and real-time video information by character adder, by real-time video information wired and/or wireless mode transmission stack line information, character adder is integrated in the video camera, superpose by the real-time video information of the contact condition of the wheel of camera acquisition train and track and with the real-time video information of gathering real time line information with reception, generate the real-time video information of stack line information, and be wirelessly transmitted to long-range video monitoring devices, with the real-time wheel track contact condition of monitoring train; Perhaps, image unit 101 is realized by video camera, the real-time video information of the wheel of collection train and the contact condition of track; Line information acquiring unit 102 and processing unit 103 are realized by character adder, video information transmission unit and coding unit are realized by video encoder, character adder and video encoder are integrated in the video camera, the real-time video information of the wheel by the camera acquisition train and the contact condition of track also superposes the real-time video information of the gathering real time line information with reception, generate the video information of stack line information, video information is packaged as digital IP signal, digital IP signal is wired and/or be wirelessly transmitted to long-range video monitoring devices.
The beneficial effect of present embodiment is, by the wheel track contact condition in the monitoring train travelling process, the auxiliary judge data that provide for the wireline inspection of wheel rail dynamics detection system are with the accuracy of the wireline inspection that improves the wheel rail dynamics monitoring system.
Embodiment 2
Present embodiment provides a kind of wheel track contact condition monitoring device 200, and as shown in Figure 2, this device 200 comprises: video information receiving element 201 and display unit 202.
Wherein, this video information receiving element 201 is used to receive the wheel of stack line information and the video information of track contact condition, line information road title and/or mileage and/or travel speed.This display unit 202 is used to show the video information of line information at a low price, with the contact condition of monitoring wheel and track.
In the present embodiment, wheel track contact condition monitoring device can be realized by the video acquisition process computer.Video information receiving element 20 and display unit 202 are integrated in the video acquisition process computer.Also can comprise in the video acquisition process computer: decoding unit is used for the video information that receives is carried out video decode; Memory cell, the video information that is used to store the stack line information; The line information receiving element is used to receive the real time line information that the synchro system transmission of train location comes; The line information transmission unit is used for the real time line information that receives is transmitted by wired and/or wireless mode.
The beneficial effect of present embodiment is, the wheel of the train by monitoring stack line information and the video of track contact condition, the auxiliary judge data that provide for the wireline inspection of wheel rail dynamics detection system are with the accuracy of the wireline inspection that improves the wheel rail dynamics monitoring system.
According to the technical scheme of the utility model embodiment 1 and embodiment 2 announcements, those skilled in the art can be combined into wheel track contact condition monitoring system shown in Figure 3 with the wheel track contact condition monitoring device 100 and 200 among embodiment 1 and the embodiment 2.Among Fig. 3, wheel track contact condition monitoring system comprises video generating apparatus 301 and video monitoring devices 302, wherein pass through the wired and/or wireless telecommunications of communication network between video generating apparatus 301 and the video monitoring devices 302, video monitoring devices 302 receives the real time line information that the synchro system transmission of train location comes, real time line information is sent to video generating apparatus 301 by communication network, by the real-time video information stack of video generating apparatus 301 with the contact condition of the wheel of the train of real time line information and collection and track, real-time video information with stack real time line information, be transferred to video monitoring devices 302 by communication network, with the wheel track contact condition of monitoring train.
Those skilled in the art are combined into wheel track contact condition monitoring system shown in Figure 4 also with the wheel track contact condition monitoring device 100 and 200 among embodiment 1 and the embodiment 2.Among Fig. 4, wheel track contact condition monitoring system comprises video generating apparatus 401 and 402, video monitoring devices 403, wherein the video generating apparatus 401,402 and video monitoring devices 403 between by the communication network wireless connections, video monitoring devices 403 receives the real time line information that the synchro system transmission of train location comes, real time line information is sent to video generating apparatus 401 and 402 respectively by communication network, by the real-time video information stack of video generating apparatus 401, superpose by the real-time video information of video generating apparatus 402 with the contact condition of the right wheel of the train of real time line information and collection and track with the contact condition of the left wheel of the train of real time line information and collection and track.By will superpose the respectively real-time video information of real time line information of video generating apparatus 401 and 402, be transferred to video monitoring devices 302 by communication network, with the left wheel of monitoring train and the wheel track contact condition of right wheel.
But what those skilled in the art should know is, in the utility model, video generating apparatus 401 and 402 also can obtain the real time line information of train by alternate manner, and for example, video generating apparatus 401 and 402 can directly obtain by the next real time line information of train location synchro system transmission.
Embodiment 3
Present embodiment provides a kind of method of monitoring the wheel track contact condition, and as shown in Figure 5, this method comprises:
Step 503 is with the line information stack of real-time video information of gathering and the real-time train that obtains;
In the present embodiment, the video information of stack line information can be an analog video signal, those skilled in the art can be according to the content of present embodiment, the video information of stack line information is encoded, be converted to data signal, data signal after the conversion is packaged as digital IP signal, by switch digital IP signal is transferred to long-range video information process computer and plays and store.
The beneficial effect of present embodiment is, by the wheel track contact condition in the monitoring train travelling process, the auxiliary judge data that provide for the wireline inspection of wheel rail dynamics detection system are with the accuracy of the wireline inspection that improves the wheel rail dynamics monitoring system.
Embodiment 4
Present embodiment provides a kind of method of monitoring the wheel track contact condition, and as shown in Figure 6, this method comprises:
Step 601 receives the wheel of stack real time line information and the real-time video information of track contact condition, line information road title and/or mileage and/or travel speed by wired and/or wireless mode;
Step 602 shows the wheel of stack real time line information and the real-time video information of track contact condition, with the contact condition of monitoring wheel and track;
Step 603, the wheel of storage stack real time line information and the real-time video information of track contact condition.
The beneficial effect of present embodiment is, by the wheel track contact condition in the monitoring train travelling process, the auxiliary judge data that provide for the wireline inspection of wheel rail dynamics detection system are with the accuracy of the wireline inspection that improves the wheel rail dynamics monitoring system.
Embodiment 7
Present embodiment provides a kind of monitoring wheel track contact condition system, and as shown in Figure 7, this system comprises: video camera 701 and 702, character adder 703, video encoder 704 and video acquisition process computer 705.
On the installation dynamometry is taken turns the car body underframe of correspondence, 2 video cameras 701 and 702 are installed, gather the video image of the wheel track contact condition of two right wheels of dynamometry wheel (take turns on the revolver and the right side) respectively.The transmission of video images of video camera 701 and 702 outputs is given character adder 703.Character adder 703, video encoder 704 and video acquisition process computer 705 are arranged in the identical or different compartment of train, wherein can detect video image by the wheel track contact condition of Ethernet wireless transmission train between video encoder 704 and the video acquisition process computer 705, also can detect video image by the wheel track contact condition of wired side's transmission train.
Video acquisition process computer 705 receives real time line information such as next real-time mileage of train location synchro system transmission and speed, and video acquisition process computer 705 is handled the back with the real time line information that receives and sent to character adder 703 in real time by fieldbus networks.The flow process of video acquisition process computer 705 processing real time line information as shown in Figure 8, because not having the situation of velocity jump in running, train do not take place, so can think that train travels at the uniform speed at short notice, at first, video acquisition process computer 705 judges that by the mileage information that receives the current running status of train increases the mileage operation or subtracts the mileage operation; Then, video acquisition process computer 705 will transmit total delay time and (comprise that the location synchro system is transferred to the time of video acquisition process computer and the time that the video acquisition process computer is transferred to character adder, this time is fixed value, test, it is 150ms) multiply by current train running speed, obtain the mileage number of propagation delay time correspondence, increase and decrease situation according to the current distance travelled of train, the mileage number addition that the current mileage number that receives is corresponding with the propagation delay time or subtract each other can obtain the real time line information of train; At last, video acquisition process computer 705 is transferred to character adder with real time line information, is used for accurately superposeing with the video image of the wheel track contact condition of train.Character adder 703 is superimposed upon line informations such as the mileage that receives, speed, circuit name respectively on the video image, the video image behind the output overlaying character, and be transferred to video encoder 704.Video encoder 704 is encoded the video image that receives and is packaged into IP information, after IP information sent to the digital IP video image decoding that video acquisition process computer 705 video acquisition process computers 705 will receive by Ethernet, show and store the train wheel track contact condition video image of stack line information in real time.
In the present embodiment, character adder 703 can adopt any one existing superimposing technique, with line information and video image stack, can realize the stack of video image and dynamic character as the dynamic character superimposer that adopts Beijing Jin Shuwen Science and Technology Ltd..
The beneficial effect of present embodiment is, monitoring to the wheel track contact condition, can the real time monitoring train in running the true contact condition of wheel and track, and with the real time line name, real time line information and real time video image stacks such as mileage and real-time speed in real time, the real time video image of the real time line information that will superpose simultaneously is recorded on the hard disk, when the wheel rail dynamics detection system finds that wheel-rail force is unusual, also can be by the corresponding wheel track contact condition video record of resetting, the reason that the wheel-rail force that causes train is unusual is carried out comprehensive analysis and judgement, improve the wireline inspection accuracy of wheel rail dynamics monitoring system.
Embodiment 6
Present embodiment provides a kind of monitoring wheel track contact condition system, and as shown in Figure 9, this system comprises: video camera 901 and 902, character adder 903 and 904, video encoder 905 and 906 and video acquisition process computer 907.On the installation dynamometry is taken turns the car body underframe of correspondence, 2 video cameras 901 and 902 are installed, gather the right left wheel of dynamometry wheel and the wheel track contact condition information of right wheel respectively.The real time video image of video camera 901 output left wheels is given character adder 903, and the real time video image of the right wheel of video camera 902 outputs is given character adder 804.Video surveillance devices 907 receives information such as next mileage of train location synchro system transmission and speed, sends to character adder 903 and 904 respectively through after the inter-process.Line informations such as the real-time mileage that character adder 903 and 904 will receive, real-time speed, real time line name are superimposed upon respectively on the video image of real-time wheel track contact condition of left wheel and right wheel.Character adder 903 goes out real time video image behind the overlaying character to video encoder 905, and the real time video image behind the character adder 904 output overlaying characters is to video encoder 906. Video encoder 905 and 906 is transferred to video surveillance devices 908 by communication network respectively with the video image that receives, behind the video image decoding by 908 pairs of video surveillance devices stack line information, show in real time and store the superpose left wheel of line information and the real-time wheel track contact condition video image of right wheel.
The beneficial effect of present embodiment is, monitoring to the wheel track contact condition, can the real time monitoring train in running the true contact condition of wheel and track, and the line informations such as circuit name, mileage and speed that superpose in real time, in real time video image is recorded on the hard disk simultaneously, when the wheel rail dynamics detection system finds that wheel-rail force is unusual, the corresponding wheel track contact condition video record of can resetting, to causing the unusual reason of train wheel-rail force to carry out comprehensive analysis and judgement, improve the accuracy of the wireline inspection of wheel rail dynamics monitoring system.
The above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a device of monitoring the wheel track contact condition is characterized in that, described device comprises:
Image unit is used to gather the video information of the wheel and the track contact condition of train;
The line information acquiring unit is connected with described image unit, is used to obtain the line information of described train; Described line information comprises line name and/or mileage and/or travel speed;
Processing unit is connected with described line information acquiring unit, is used for the described line information that will obtain and the described video information of collection and superposes;
The video information transmission unit is connected with described processing unit, is used for transmitting to video surveillance devices the described video information of the described line information of stack.
2. device according to claim 1 is characterized in that, described line information acquiring unit is used to receive the line information of the described train of described video surveillance devices transmission.
3. device according to claim 2, it is characterized in that, described device also comprises video encoding unit, be connected with described video information transmission with described processing unit, be used for the described video information of the described line information that superposes is carried out video coding, send the described video information of the described line information of stack behind the coding to described video information transmission unit.
4. a device that is used to monitor the wheel track contact condition is characterized in that, described device comprises:
The video information receiving element is used to receive the wheel of stack line information and the video information of track contact condition, described line information road title and/or mileage and/or travel speed;
Display unit, unit is connected with described video information order, is used to show the described video information of described line information of superposeing.
5. device according to claim 4 is characterized in that, described device also comprises:
Memory cell is connected with described video information order is first, is used to store the described video information of the described line information of stack;
The line information receiving element is used to receive the described line information that the synchro system transmission of train location comes;
The line information transmission unit is connected with described line information receiving element, is used to transmit the described line information of reception.
6. device according to claim 4, it is characterized in that, described device also comprises: decoding unit, be connected with described memory cell with described video information order unit, described display unit, be used for the described video information of described line information that superposes is carried out video decode, and send the described video information of the described line information of decoded stack to described display unit and described memory cell.
7. a system that monitors the wheel track contact condition is characterized in that, described system comprises:
Image unit is used to gather the video information of the wheel and the track contact condition of train;
The line information acquiring unit is used to obtain the line information of described train; Described line information comprises line name and/or mileage and/or travel speed;
Processing unit is connected with described line information acquiring unit with described image unit, is used for the described line information that will obtain and the described video information of collection and superposes;
The video information transmission unit is connected with described processing unit, is used to transmit the described video information of the described line information of stack;
The video information receiving element is connected with described video information transmission unit, is used to receive the video information of the described line information of stack;
Display unit is connected with described video information receiving element, is used to show the described video information of described line information of superposeing.
8. system according to claim 7 is characterized in that, described system also comprises: memory cell, be connected with described video information receiving element, and be used to store the described video information of the described line information of stack;
The line information receiving element is used to receive the described line information that the synchro system transmission of train location comes;
The line information transmission unit is connected with described line information acquiring unit with described line information receiving element, is used for sending described line information to described line information acquiring unit.
9. system according to claim 8, it is characterized in that, described system also comprises: video encoding unit, be connected with described video information transmission unit with described processing unit, be used for the described video information of the described line information that superposes is carried out the video coding, and the described video information of the described line information of stack after will encoding sends described video information transmission unit to.
10. system according to claim 9, it is characterized in that, described system also comprises: decoding unit, be connected with described video information receiving element, described display unit and described memory cell, be used for the described video information of the described line information of stack that receives is carried out video decode, and send the described video information of the described line information of decoded stack to described display unit and described memory cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202341161U CN201347528Y (en) | 2008-12-26 | 2008-12-26 | Device for mentoring contact state of wheel track and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202341161U CN201347528Y (en) | 2008-12-26 | 2008-12-26 | Device for mentoring contact state of wheel track and system thereof |
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| CN201347528Y true CN201347528Y (en) | 2009-11-18 |
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| CNU2008202341161U Expired - Lifetime CN201347528Y (en) | 2008-12-26 | 2008-12-26 | Device for mentoring contact state of wheel track and system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915852A (en) * | 2010-08-06 | 2010-12-15 | 北京交通大学 | Velocity measurement method based on stereoscopic vision |
| CN113163170A (en) * | 2021-04-21 | 2021-07-23 | 中国矿业大学 | System and method for superposing rail temperature, beam temperature state temperature and video of high-speed railway |
-
2008
- 2008-12-26 CN CNU2008202341161U patent/CN201347528Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915852A (en) * | 2010-08-06 | 2010-12-15 | 北京交通大学 | Velocity measurement method based on stereoscopic vision |
| CN101915852B (en) * | 2010-08-06 | 2012-05-23 | 北京交大资产经营有限公司 | Velocity measurement method based on stereoscopic vision |
| CN113163170A (en) * | 2021-04-21 | 2021-07-23 | 中国矿业大学 | System and method for superposing rail temperature, beam temperature state temperature and video of high-speed railway |
| CN113163170B (en) * | 2021-04-21 | 2022-07-26 | 中国矿业大学 | System and method for superposing rail temperature, beam temperature state temperature and video of high-speed railway |
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Assignee: Beijing IMAP Technology Co., Ltd. Assignor: Infrastructure Testing Institute of China Academy of Railway Sciences Contract record no.: 2011110000037 Denomination of utility model: Device for mentoring contact state of wheel track and system thereof Granted publication date: 20091118 License type: Exclusive License Record date: 20110603 |
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Owner name: INFRASTRUCTURE TESTING INSTITUTE OF CHINA ACADEMY Effective date: 20120910 |
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Effective date of registration: 20120910 Address after: 100081 Beijing Haidian District Daliushu Road No. 2 Patentee after: China Academy of Railway Sciences Patentee after: Infrastructure Testing Institute of China Academy of Railway Sciences Patentee after: Beijing IMAP Technology Co., Ltd. Address before: 100081 Beijing City, Haidian District Road No. 2 building 1216 Daliushu Patentee before: Infrastructure Testing Institute of China Academy of Railway Sciences |
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Granted publication date: 20091118 |
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