CN105223378A - A kind of vehicle speed measurement system for bullet train and method - Google Patents
A kind of vehicle speed measurement system for bullet train and method Download PDFInfo
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- CN105223378A CN105223378A CN201510527716.1A CN201510527716A CN105223378A CN 105223378 A CN105223378 A CN 105223378A CN 201510527716 A CN201510527716 A CN 201510527716A CN 105223378 A CN105223378 A CN 105223378A
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- bullet train
- track plates
- time
- vehicle speed
- train
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Abstract
The present invention relates to bullet train field, disclose a kind of vehicle speed measurement system for bullet train and method.Wherein, described system comprises: sensor, be installed on the bottom of described bullet train, for changing output voltage waveforms when described bullet train runs by the static state between the bar-mat reinforcement in measurement high-speed train track plate and the probe of described current vortex sensor and/or dynamic relative displacement; And computing machine, be connected with described current vortex sensor, for obtaining the time of described bullet train by track plates according to received voltage waveform, and obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.The present invention obtains the time of bullet train by track plates by installing current vortex sensor bottom bullet train, in conjunction with the width of the track plates preset, the real-time speed of bullet train can be obtained, overcome in traditional measurement method the inaccurate problem that tests the speed.
Description
Technical field
The present invention relates to bullet train field, particularly, relate to a kind of vehicle speed measurement system for bullet train and method.
Background technology
The speed of a motor vehicle of monitoring bullet train is significant for the safe and stable operation of rail transportation system.The monitoring of bullet train speed directly affects the scheduling of rail transportation system, the speeds control etc. of bullet train.When sliding appears in the wheel of bullet train, especially when wet and slippery operating mode appears to train in braking or railway at a high speed, between wheel and train rail, there will be relative sliding.Because wheel shaft does not rotate, existing sensor easily causes the erroneous judgement of the speed of a motor vehicle of bullet train, brings certain impact to the safe and stable operation of bullet train.
Summary of the invention
The object of this invention is to provide a kind of vehicle speed measurement system for bullet train and method.Wherein, described system obtains the time of bullet train by track plates by installing current vortex sensor bottom bullet train, in conjunction with the width of the track plates preset, the real-time speed of bullet train can be obtained, overcome in traditional measurement method the inaccurate problem that tests the speed.
To achieve these goals, the invention provides a kind of vehicle speed measurement system for bullet train.Described system comprises: sensor, be installed on the bottom of described bullet train, for changing output voltage waveforms when described bullet train runs by the static state between the bar-mat reinforcement in measurement high-speed train track plate and the probe of described current vortex sensor and/or dynamic relative displacement; And computing machine, be connected with described sensor, for obtaining the time of described bullet train by track plates according to received voltage waveform, and obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.
Preferably, described computing machine obtains the travelling speed of described bullet train according to following formulae discovery:
wherein, L is the width of the track plates preset, and T is the time of described bullet train by track plates, and V is the travelling speed of described bullet train.
Preferably, described sensor comprises current vortex sensor.
Preferably, bar-mat reinforcement is provided with in described track plates.
Preferably, described system also comprises: display, is connected with described computing machine, for showing the travelling speed of described bullet train.
Correspondingly, the present invention also provides a kind of vehicle speed measurement method for bullet train.Described method comprises: the voltage waveform that receiving sensor exports; The time of described bullet train by track plates is obtained according to received voltage waveform; And obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.
Preferably, described computing machine obtains the travelling speed of described bullet train according to following formulae discovery:
wherein, L is the width of the track plates preset, and T is the time of described bullet train by track plates, and V is the travelling speed of described bullet train.
Preferably, described sensor is current vortex sensor.
Pass through technique scheme, sensor installation bottom bullet train, and by sensor output waveform to obtain the time of bullet train by track plates, then obtained the travelling speed of bullet train by time of track plates and the width calculation of track plates that presets according to bullet train, test the speed when solving wheel skid in traditional measurement method inaccurate problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the vehicle speed measurement system for bullet train provided by the invention;
Fig. 2 is the structural representation of high-speed train track middle orbit plate;
Fig. 3 is the voltage oscillogram that the current vortex sensor of the vehicle speed measurement system for bullet train provided by the invention exports; And
Fig. 4 is the process flow diagram of the vehicle speed measurement method for bullet train provided by the invention.
Description of reference numerals
10 bullet train 20 rail 30 current vortex sensors
40 computing machine 50 display 60 bar-mat reinforcements
70 track plates
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Usually, when wet and slippery operating mode appears to train in braking or railway at a high speed, between wheel and train rail, there will be relative sliding.Because wheel shaft does not rotate, the existing sensor being arranged on wheel shaft easily causes the erroneous judgement of train speed, brings certain impact to the safe and stable operation of bullet train.Therefore, the present invention spy provides a kind of vehicle speed measurement system for bullet train.
Fig. 1 is the structural representation of the embodiment of the vehicle speed measurement system for bullet train provided by the invention.As shown in Figure 1, vehicle speed measurement system for bullet train provided by the invention comprises: sensor, be installed on the bottom of described bullet train 10, for changing output voltage waveforms when described bullet train runs by the static state between the bar-mat reinforcement in measurement high-speed train track plate and the probe of described current vortex sensor and/or dynamic relative displacement; And computing machine 40, be connected with described sensor 30, for obtaining the time of described bullet train by track plates according to received voltage waveform, and obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.By this, can measure the travelling speed of bullet train in real time, test the speed when solving wheel skid in traditional measurement method inaccurate problem.
In a particular embodiment, described sensor is current vortex sensor 30.
In embodiment particularly, described system also comprises: display 50, is connected with described computing machine 40, for showing the travelling speed of described bullet train.By this, the travelling speed of bullet train can be shown in real time, be convenient to the travelling speed that staff checks bullet train.
Wherein, current vortex sensor 30 comprises probe coil, extension cable and fore-lying device.Described fore-lying device comprises oscillator, testing circuit and amplifier.The specific works principle of current vortex sensor is:
Fore-lying device medium-high frequency oscillating current flows into probe coil by extension cable, produces the magnetic field of alternation in probe coil.When tested metallic object is near this magnetic field, then produce in Vorticose induction current at this metal body surface.Meanwhile, this current vortex field also produces the direction alternating magnetic field contrary with probe coil direction, due to its retroaction, the amplitude of probe coil high-frequency current and phase place are changed (virtual impedance of probe coil), and the geometric configuration of this change and metallic object magnetic permeability, conductivity, probe coil, physical dimension, power frequency and probe coil are to the relating to parameters such as distance on metallic conductor surface.Usual supposition metallic conductor uniform in material and performance is linear and isotropy, then the physical property of probe coil and metallic conductor can be described by distance D, the strength of current I on the conductivity б of metallic conductor, magnetic permeability ξ, size factor τ, head volume coils and metallic conductor surface and frequencies omega parameter, then probe coil characteristic impedance can use Z=F (τ, ξ, б, D, I, ω) function represents.Usually we can accomplish control τ, ξ, б, these parameters of I, ω are constant within the specific limits, then the characteristic impedance Z of coil just becomes the single-valued function of distance D, although its whole function is one nonlinear, its Function feature is " S " type curve, can choose it and be approximately linear one section.In this, by the process of fore-lying device electronic circuit, by the change of coil impedance Z, namely the change of the distance D of probe coil and metallic conductor changes into the change of voltage or electric current.The size of output signal changes with the spacing between probe to measured body surface.
Fig. 2 is the structural representation of high-speed train track middle orbit plate.As shown in Figure 2, in a particular embodiment, current vortex sensor is arranged on the bottom of bullet train, perpendicular to rail 20 plane of bullet train.High-speed train track is non-fragment orbit, and non-fragment orbit is laid by track plates 70 and is formed by connecting, and there is bar-mat reinforcement 60 structure track plates inside, and the width that the width of inner bar-mat reinforcement 60 is approximately track plates is L.When bullet train runs through track plates 70, be arranged on the current vortex sensor bottom bullet train and the change of the distance between the probe coil of current vortex sensor and bar-mat reinforcement is changed into change in voltage, and output voltage waveforms.The amplitude of output voltage waveforms changes with the distance between the probe coil of current vortex sensor and bar-mat reinforcement.When the probe coil of current vortex sensor is by track plates, distance in the probe coil of current vortex sensor and track plates between bar-mat reinforcement is certain, so the amplitude of the voltage waveform of current vortex sensor output is also certain, and when the probe coil of current vortex sensor passes through the gap between track plates, distance in the probe coil of current vortex sensor and track plates between bar-mat reinforcement can become infinitely great, because there is not bar-mat reinforcement (metallic conductor) in the gap between track plates, so the amplitude of the voltage waveform of current vortex sensor output can produce step saltus step.Fig. 3 is the voltage oscillogram that the current vortex sensor of the vehicle speed measurement system for bullet train provided by the invention exports.As shown in Figure 3, when the probe coil of current vortex sensor is often by a track plates, current vortex sensor can produce a voltage waveform, and the amplitude between voltage waveform is not continuous print.Based on the feature of the voltage waveform that current vortex sensor exports, computing machine 40 can obtain the time of bullet train by track plates according to received voltage waveform.
Particularly, bullet train is T, then T=t by the time of track plates
2-t
1.Wherein, time t
1, t
2the magnitude of voltage being respectively one of them voltage waveform is v
0time corresponding time.Preferably, the magnitude of voltage of one of them voltage waveform is selected to be v
0time the corresponding time be respectively time t
1, t
2, be because as magnitude of voltage v
0the bullet train obtained during maximum amplitude lower than voltage waveform is more accurate by the time of track plates.Obtain bullet train by the time of track plates after, computing machine obtains the travelling speed of bullet train according to following formulae discovery:
wherein, L is the width of the track plates preset, and T is the time of described bullet train by track plates, and V is the travelling speed of described bullet train.
Correspondingly, the present invention also provides a kind of vehicle speed measurement method for bullet train.Fig. 4 is the process flow diagram of the vehicle speed measurement method for bullet train provided by the invention.As shown in Figure 4, the vehicle speed measurement method for bullet train provided by the invention comprises: in step S101, the voltage waveform that receiving sensor exports; In step s 102, the time of described bullet train by track plates is obtained according to received voltage waveform; And in step s 103, obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.For the details that also may relate in each step, provided by the invention for the vehicle speed measurement system of bullet train in be described, do not repeat them here.
The invention discloses a kind of vehicle speed measurement system for bullet train and method.Wherein, the method obtains the time of bullet train by the track plates of non-fragment orbit by installing current vortex sensor to measure bottom train, then substitutes into correlation formula, just can draw the real-time speed of bullet train.The method is compared with traditional bullet train speed-measuring method, and test the speed when can overcome wheel skid in traditional measurement method inaccurate defect.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. for a vehicle speed measurement system for bullet train, it is characterized in that, described system comprises:
Sensor, be installed on the bottom of described bullet train, for changing output voltage waveforms when described bullet train runs by the static state between the bar-mat reinforcement in measurement high-speed train track plate and the probe of described current vortex sensor and/or dynamic relative displacement; And
Computing machine, be connected with described sensor, for obtaining the time of described bullet train by track plates according to received voltage waveform, and obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.
2. the vehicle speed measurement system for bullet train according to claim 1, is characterized in that, described computing machine obtains the travelling speed of described bullet train according to following formulae discovery:
Wherein, L is the width of the track plates preset, and T is the time of described bullet train by track plates, and V is the travelling speed of described bullet train.
3. the vehicle speed measurement system for bullet train according to claim 1, is characterized in that, described sensor comprises current vortex sensor.
4. the vehicle speed measurement system for bullet train according to claim 1, is characterized in that, is provided with bar-mat reinforcement in described track plates.
5. the vehicle speed measurement system for bullet train according to claim 1, is characterized in that, described system also comprises:
Display, is connected with described computing machine, for showing the travelling speed of described bullet train.
6. for a vehicle speed measurement method for bullet train, it is characterized in that, described method comprises:
The voltage waveform that receiving sensor exports;
The time of described bullet train by track plates is obtained according to received voltage waveform; And
Obtained the travelling speed of described bullet train by time of track plates and the width calculation of track plates that presets according to described bullet train.
7. the vehicle speed measurement method for bullet train according to claim 6, is characterized in that, obtains the travelling speed of described bullet train according to following formulae discovery:
Wherein, L is the width of the track plates preset, and T is the time of described bullet train by track plates, and V is the travelling speed of described bullet train.
8. the vehicle speed measurement method for bullet train according to claim 6, is characterized in that, described sensor is current vortex sensor.
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| CN201510527716.1A CN105223378A (en) | 2015-08-25 | 2015-08-25 | A kind of vehicle speed measurement system for bullet train and method |
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| CN201510527716.1A CN105223378A (en) | 2015-08-25 | 2015-08-25 | A kind of vehicle speed measurement system for bullet train and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108373090A (en) * | 2018-02-13 | 2018-08-07 | 福德斯电梯有限公司 | A kind of passenger lift limiter of speed security system |
| CN111121757A (en) * | 2019-12-18 | 2020-05-08 | 航天时代电子技术股份有限公司 | Railway locomotive positioning and speed measuring system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797927A (en) * | 2010-04-20 | 2010-08-11 | 中国人民解放军国防科学技术大学 | Non-contact rail traffic speed-measurement and positioning method based on sleeper detection and device thereof |
| CN104527735A (en) * | 2014-12-30 | 2015-04-22 | 中国人民解放军国防科学技术大学 | Magnetic-levitation train positioning and speed measuring device and method based on F rail |
-
2015
- 2015-08-25 CN CN201510527716.1A patent/CN105223378A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797927A (en) * | 2010-04-20 | 2010-08-11 | 中国人民解放军国防科学技术大学 | Non-contact rail traffic speed-measurement and positioning method based on sleeper detection and device thereof |
| CN104527735A (en) * | 2014-12-30 | 2015-04-22 | 中国人民解放军国防科学技术大学 | Magnetic-levitation train positioning and speed measuring device and method based on F rail |
Non-Patent Citations (3)
| Title |
|---|
| 卓生荣 等: "基于电涡流传感器的车辆超速检测研究", 《软件》 * |
| 夏虹 等: "电涡流传感器用于铁路机车速度与路程的测量", 《哈尔滨工程大学学报》 * |
| 高岩 等: "基于电涡流位移传感器列车行驶速度在线测量的方法", 《现代仪器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108373090A (en) * | 2018-02-13 | 2018-08-07 | 福德斯电梯有限公司 | A kind of passenger lift limiter of speed security system |
| CN108373090B (en) * | 2018-02-13 | 2020-01-10 | 福德斯电梯有限公司 | Passenger elevator overspeed governor safety coefficient |
| CN111121757A (en) * | 2019-12-18 | 2020-05-08 | 航天时代电子技术股份有限公司 | Railway locomotive positioning and speed measuring system and method |
| CN111121757B (en) * | 2019-12-18 | 2021-12-07 | 航天时代电子技术股份有限公司 | Railway locomotive positioning and speed measuring system and method |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant after: CRRC QINGDAO SIFANG CO., LTD. Address before: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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Application publication date: 20160106 |
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