CN109425288A - A method of track plank split is monitored automatically using magnetostrictive displacement range measurement principle - Google Patents
A method of track plank split is monitored automatically using magnetostrictive displacement range measurement principle Download PDFInfo
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- CN109425288A CN109425288A CN201710781734.1A CN201710781734A CN109425288A CN 109425288 A CN109425288 A CN 109425288A CN 201710781734 A CN201710781734 A CN 201710781734A CN 109425288 A CN109425288 A CN 109425288A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 74
- 238000005259 measurement Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000012806 monitoring device Methods 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 10
- 230000003447 ipsilateral effect Effects 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The present invention relates to a kind of methods for monitoring track plank split automatically using magnetostrictive displacement range measurement principle, it is monitored automatically using the monitoring device with magnetostrictive displacement sensor, comprising: 1) magnetostrictive displacement sensor is fixed on track plates side；2) connection circuit board is installed for magnetostrictive displacement sensor respectively, each circuit board is then connected to vasculum, forms a monitoring data transmission channel；3) startup power supply and network connection, magnetostrictive displacement sensor start fracture and are monitored；The monitoring signals of last each monitoring point are sent to cloud platform server and are stored and compared, and provide warning alert in due course.The method of the present invention realizes the automatic monitoring purpose of branch monitoring, concentrated collection, precision is up to 0.01mm, automatic measurement is realized to the crack of each measuring point of route simultaneously and data can be uploaded to cloud platform, improves the monitoring efficiency of track plank split, there is huge economic and social benefit.
Description
Technical field
The present invention relates to automatic monitoring fields, refer in particular to one kind and utilize magnetostriction position suitable for high-speed track engineering
Move the method that range measurement principle monitors track plank split automatically.
Background technique
In terms of the patent belongs to automatic monitoring field, wanting for high-speed rail comfort and a whole set of high standard of security needs is runed
It asks, wherein the crack of track plates and cement substrate is a very crucial parameter, because track plates are to be laid on cement base in the later period
On seat, engaging portion between the two is influenced that crack can be generated by temperature change and other factors, is mainly shown as that track plates are opposite
Pedestal arch, crack value reach 3mm and want early warning, and reaching 6mm will alarm.Monitoring means is mainly personal monitoring at present, using people
Huge-crowd strategy, when the artificial online line inspection of the window phase of high-speed rail route or evening, inspection then using vernier caliper measurement
Manual record.Substantially manually, measure each precision has deviation to this kind of monitoring means, and needs fine record, a large amount of numerous
Trivial measurement is easy that error rate is also extremely slow, thousands of kilometers, the daily a large amount of man power and material of artificial investigation needs.
The method monitored automatically disclosed in the prior art in relation to crack is more, the monitoring device of use and applicable field
It has nothing in common with each other.Such as " a kind of Crack Monitoring device and method " disclosed in publication number 106949840A, it is mainly used for accurately predicting
Engineering structure or Rock And Soil fracture width.Notification number CN103512545B discloses a kind of " concrete dam internal fissure monitoring
Method and monitor " is mainly used for the monitoring of concrete dam internal fissure.Etc..There are no appearance to be directed to track, especially high
The method that the track plates of fast railroad track and the crack of cement substrate monitor automatically.
Summary of the invention
The purpose of the present invention is being improved and being innovated for disadvantage present in background technique and problem, a kind of benefit is provided
The method for monitoring track plank split automatically with magnetostrictive displacement range measurement principle.
The present invention is the method monitored automatically using the monitoring device with magnetostrictive displacement sensor, in which: institute
The monitoring device stated includes being mounted on ipsilateral at least two magnetostrictive displacement sensors of same track plates, is connected one to one
At least two circuit boards of magnetostrictive displacement sensor configuration, and the vasculum of each circuit board of connection, wherein the mangneto is stretched
Condense displacement sensor the vertical respective carter cement substrate of measurement end surface；The vasculum will by internet communication mode
The signal of magnetostrictive displacement sensor acquisition is sent to cloud platform server.
The specific monitoring method of the present invention the following steps are included:
1, each magnetostrictive displacement sensor is fixed on to the side of ipsilateral track plates first, each magnetostrictive displacement sensor
Mounting distance is connect downwards with multiple spot monitoring straight line arrangement, the mounting height of each magnetostrictive displacement sensor with the head of measurement end
Touching corresponding surface, measurement end compresses 6-15mm upwards simultaneously, when track plates relative orbit cement substrate being made to arch up, measurement end energy
Accurately collect the variation of measurement end compressed value.Because the monitoring super 3mm of code requirement crack warpage needs early warning, super 6mm needs to report
It is alert to stop operation, accident is prevented, therefore the stroke of at least reserved 6mm or more is installed.
2, connection circuit board is installed to mounted each magnetostrictive displacement sensor respectively again, then connects each circuit board
It is connected to vasculum, each magnetostrictive displacement sensor, circuit board and vasculum is made to form a monitoring data transmission channel.
3, after startup power supply and network connection, each magnetostrictive displacement sensor starts to track plates and track cement substrate
Crack situation be monitored；The analogue data of the correspondence monitoring point of each magnetostrictive displacement sensor acquisition, first passes through correspondence
Circuit board be converted into digital signal, then digital signal transmission is converged into vasculum by each circuit board, is finally uniformly sent to
Cloud platform server is stored and is compared；When displacement data reaches the good early warning of cloud platform server settings or alarming value,
Cloud platform server provides warning alert immediately.
The magnetostrictive displacement sensor includes sensor main body and measurement end in one of the embodiments,
Described in measurement end stretched out from the bottom surface of sensor main body, and be provided with below face sensor main body coaxial with measurement end
Measurement end protects cylinder, and the head of the measurement end contacts downwards with measurement end protection cylinder bottom surface, compresses.
Specifically, described measurement end protection cylinder bottom end is fixed in track cement substrate, top surface and sensor main body
The mounting distance of bottom surface interval 6-10mm.
Specifically, the bottom of the measurement end protection cylinder is provided with the through-hole for preventing protection pipe internal water accumulation.
Using between the magnetostrictive displacement sensor, circuit board and vasculum in one of the embodiments, has
Line transmits vigour part or the connection of wireless transmission vigour part and transmission data.
Specifically, the wire transmission vigour part is CAN bus perhaps 485 buses or channel mode.It is wireless to pass
Transmission purpose can be realized using wireless transmission vigour part mature at present in defeated component.
The circuit board is installed on track cement surface layer by the way that terminal box is arranged in one of the embodiments,.
Further, set the interface there are three direction in the terminal box, two of them interface respectively with it is forward and backward adjacent
Terminal box correspond to wiring, the wiring corresponding with magnetostrictive displacement sensor of another interface.
In the head end of transmission channel, vasculum is interior to be equipped with convergence for vasculum configuration in one of the embodiments,
Each circuit board data and GPRS communication module, electronic component and the battery component for being uploaded to cloud platform server.
Advantages of the present invention and the utility model has the advantages that
The present invention realizes track plates and track cement substrate with magnetostriction range measurement principle and the monitoring device specially designed
The tubularpH sensor in crack.Between each monitoring portion using the transmission modes such as CAN bus realize the transmission of bus-powered and signal,
Acquisition realizes branch monitoring, concentrated collection in conjunction with more mature network transmission and data sharing, correlation technique at present
Automatic monitoring purpose.
The present invention carries out Crack Monitoring using high-precision magnetostrictive displacement sensor, which is internal contactless
Measurement, delicate structure, environmental suitability are strong, and high-precision, high stability, high reliability, long service life meet high-speed rail plate
Crack Monitoring requirement, precision is up to 0.01mm, it is ensured that the safety of track operation.Meanwhile the crack of each measuring point of route is realized
Automatic measurement and data can be uploaded to cloud platform, and user can check splitting for track plates and cement substrate by mobile terminal at any time
Stitch data variation.Platform can carry out pre-, alarm to the measuring point for the value that transfinites by modes such as short message, acousto-optics, greatly improve track plates
Monitoring efficiency, real-time, the reliability in crack have huge economic and social benefit.
Detailed description of the invention
Fig. 1 is detection method flow chart.
Fig. 2 is monitoring device mounting structure main view of the present invention.
Fig. 3 is Fig. 2 overlooking structure diagram.
Fig. 4 is enlarged drawing at Fig. 2A.
Fig. 5 is the magnetostrictive displacement sensor structural schematic diagram in monitoring device of the present invention.
Figure number explanation:
1, vasculum, 2, magnetostrictive displacement sensor, 2-1, sensor main body, 2-2 measurement end, 3, measurement end protection cylinder, 4,
Terminal box, 5, track plates, 6, track cement substrate, 7, track cement surface layer.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that when element be considered as " setting " or " connection " on the other element, it can be directly
Setting connects on the other element or may be simultaneously present centering elements.
Unless otherwise defined, the skill of all technical and scientific terms and technical field of the invention used herein
The normally understood meaning of art personnel is identical.Term used in the description is intended merely to describe specifically to implement purpose, is not
It is designed to limit the invention.
Embodiment:
The hardware detection device that the present embodiment uses is as shown in Figure 2,3, including being fixed on ipsilateral two of same track plates 5
Magnetostrictive displacement sensor 2 and two circuit boards being arranged in terminal box 4 (box internals, figure do not regard).Its magnetostriction position
Displacement sensor 2 connects one to one with the circuit board in terminal box 4, is divided into the both ends of 5 side of track plates, circuit board and wiring
Box 4 is mounted on track cement surface layer 7.Set the interface there are three direction in terminal box 4, two of them interface respectively with it is preceding,
The corresponding wiring of adjacent terminal box 4, the wiring corresponding with magnetostrictive displacement sensor 2 of another interface are detailed in Fig. 1 afterwards.
Detection device further includes the vasculum 1 that railway line one end is arranged in, the circuit board in terminal box 4 on each track plates
It is connected to the vasculum 1.Vasculum 1 configures the head end in transmission channel, is equipped in vasculum 1 and converges each circuit board data simultaneously
It is uploaded to GPRS communication module, electronic component and the battery component of cloud platform server (case internals do not regard for conventional part, figure).
Information data is transmitted using CAN bus between the magnetostrictive displacement sensor 2 of detection device, circuit board and vasculum 1.
As shown in Figure 4,5, magnetostrictive displacement sensor 8 includes sensor main body 2-1 and measurement end 2-2, measurement end
2-2 is stretched out from the bottom surface of sensor main body 2-1.One is provided in the track cement substrate 6 of face measurement end 2-2 to be used to protect
The measurement end for protecting measurement end stability protects cylinder 3, and bottom is provided with the through-hole for preventing protection pipe internal water accumulation (figure does not regard).
Specific monitoring method includes the following steps (see Fig. 1,2):
1, two magnetostrictive displacement sensors 2 are fixed on to the both ends of ipsilateral track plates 5, two magnetostrictive displacement sensors 2
Mounting height is with the head of measurement end 2-2 downward contact measurement end protection 3 bottom surface of cylinder while measurement end 2-2 compresses 15mm upwards
Subject to.Measurement end protects the mounting distance of 3 top surface of cylinder and the bottom surface interval 6mm of sensor main body 2-1.
2, connection circuit board and terminal box 4 are installed respectively to mounted two magnetostrictive displacement sensor 2.
3, two circuit boards are connected to vasculum 1, make two magnetostrictive displacement sensors 2, circuit board and the formation of vasculum 1
One monitoring data transmission channel.
4, startup power supply and network connection, two magnetostrictive displacement sensors 2 start to track plates 5 and track cement substrate
6 crack situation is monitored.The analogue data of the correspondence monitoring point of two magnetostrictive displacement sensors 2 acquisition, first passes through pair
The circuit board answered is converted into digital signal, then digital signal transmission is converged to vasculum 1 by each circuit board, finally unifies transmission
It is stored and is compared to cloud platform server.When displacement data reaches the good early warning of cloud platform server settings or alarming value
When, cloud platform server provides warning alert immediately.
Consider for attached drawing length, the description for the monitoring method that the present embodiment is carried out primarily directed to one piece of track plates, needle
The monitoring of N block track plates is directed to the monitoring of railway line, monitoring device installation and monitoring method are identical.
The realization of monitoring method of the present invention mainly utilizes hardware device, communications portion and system platform three parts, in which:
One, hardware components:
Magnetostrictive displacement sensor: high-precision can be accurate to 0.01mm.Each sensor is used as independent communication and calibration
Configuration ontology, can be calibrated and temperature-compensating.Structurally waterproof, can 10 meters of waterproofs.
Each sensor has a global unique number, built-in storage chip, can storage table determine table and electronic labeling information.It passes
Sensor built-in temperature chip, and temperature-compensating can be carried out to measurement data.It is digital signal that sensor, which comes out, and hardware interface has
RS485, CAN, channel analogy amount.Acquisition system power diversity, can alternating current can be solar powered.
Two, communications portion:
Predominantly CAN bus communication is communicated between magnetostrictive displacement sensor and collection terminal (while may be implemented RS485, logical
Road analog quantity).Acquisition system is communicated with collection terminal using GPRS communication or other radio stations.Collection terminal is upper computer software,
The address information of sensors configured.
Three, system platform:
The crack changing value of each track plates of real-time exhibition, data form can export.Can curve show measuring point data to change, it is optional
Selecting property compares each point.Real time data distribution map can be shown, straightforward each point latest data.Platform alarm diversity, webpage
Sound-light alarm, network and short message alarm.
The working principle and function of each composed structure:
1, magnetostrictive displacement sensor:
Magnetostrictive displacement sensor is to generate a strain arteries and veins using magnetostriction principle, by two different magnetic field intersections
Signal is rushed to accurately measure position.Measuring cell is a waveguide, and the sensing element in waveguide is by special mangneto
Made of telescopic material.Measurement process is to generate current impulse in the electronic room by sensor, and the current impulse is in waveguide
Transmission when the magnetic field and covers the activity on waveguide as change in location to generate a circumferential magnetic field outside waveguide
When the magnetic field intersection that magnet ring generates, the mechanical wave pulse signal of a strain can be generated due to magnetostrictive effect, in waveguide,
This is strained mechanical wave pulse signal and is transmitted with fixed speed of sound, and quickly detected by electronic room.Since this is answered
Become mechanical wave pulse signal in waveguide transmission time and movable magnet ring between electronic room at a distance from it is directly proportional, pass through survey
Measure the time, so that it may highly precisely determine this distance.Since output signal is a real absolute value, rather than ratio
Or enhanced processing signal, so be not present signal drift or variate the case where, there are no need periodically mark again.
Each displacement sensor has MCU, to resistance variations galvanization sampled voltage, voltage value caused by mechanical displacement
It is linear with displacement, therefore MCU corrects calibration to it, and is subject to temperature-compensating, hardware output interface connects for CAN bus
Mouthful.
2, collection of server end
Collection of server end is established the link by mobile Internet and the GPRS module in acquisition system, and the bluetooth at detector end is logical
News module can be communicated with CAN bus, and collection terminal sends the acquisition with address bit, and the high-precision displacement meter of appropriate address returns to it
Displacement；And mathematical model is added to calculate each point warp displacement amount to each point；And send data to server.
3, Platform Server
Platform Server establishes monitoring station according to projects, establishes tree-like archives to project, each track plates data press installation position
It sets and is identified, user need to only be connected to Internet network Website login and check with password the number in its permission by its account
According to.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content, is all described in the claims.
Claims (9)
1. a kind of method for monitoring track plank split automatically using magnetostrictive displacement range measurement principle, it is characterised in that it uses band
The monitoring device of magnetostrictive displacement sensor is monitored automatically, in which:
The monitoring device includes being mounted on ipsilateral at least two magnetostrictive displacement sensors of same track plates, and one is a pair of
At least two circuit boards of magnetostrictive displacement sensor configuration, and the vasculum of each circuit board of connection should be connected, wherein described
The surface of the vertical respective carter cement substrate of the measurement end of magnetostrictive displacement sensor；The vasculum passes through internet communication
The signal that magnetostrictive displacement sensor acquires is sent to cloud platform server by mode；
Using above-mentioned monitoring device carry out Crack Monitoring method the following steps are included:
1) each magnetostrictive displacement sensor is fixed on to the side of ipsilateral track plates first, each magnetostrictive displacement sensor
Mounting distance is connect downwards with multiple spot monitoring straight line arrangement, the mounting height of each magnetostrictive displacement sensor with the head of measurement end
Touching corresponding surface, measurement end compresses 6-15mm upwards simultaneously；
2) connection circuit board is installed to mounted each magnetostrictive displacement sensor respectively again, is then connected to each circuit board
Vasculum makes each magnetostrictive displacement sensor, circuit board and vasculum form a monitoring data transmission channel；
3) with after network connection, each magnetostrictive displacement sensor starts to split track plates and track cement substrate startup power supply
Seam situation is monitored；The analogue data of the correspondence monitoring point of each magnetostrictive displacement sensor acquisition, first passes through corresponding electricity
Road plate is converted into digital signal, then digital signal transmission is converged to vasculum by each circuit board, and it is flat to be finally uniformly sent to cloud
Platform server is stored and is compared；When displacement data reaches the good early warning of cloud platform server settings or alarming value, Yun Ping
Platform server provides warning alert immediately.
2. the method according to claim 1 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the magnetostrictive displacement sensor includes sensor main body and measurement end, wherein the measurement end is from sensing
The bottom surface of device main body is stretched out, and is provided with below face sensor main body and is protected cylinder, the survey with the coaxial measurement end of measurement end
The head for measuring end contacts downwards with measurement end protection cylinder bottom surface, compresses.
3. the method according to claim 2 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the measurement end protection cylinder bottom end is fixed in track cement substrate, the bottom surface interval of top surface and sensor main body
The mounting distance of 6-15mm.
4. the method according to claim 2 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the bottom of the measurement end protection cylinder is provided with the through-hole for preventing protection pipe internal water accumulation.
5. the method according to claim 1 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that between the magnetostrictive displacement sensor, circuit board and vasculum using wire transmission vigour part or wireless
Transmit the connection of vigour part and transmission data.
6. the method according to claim 5 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the wire transmission vigour part is CAN bus perhaps 485 buses or channel mode.
7. the method according to claim 1 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the circuit board is installed on track cement surface layer by the way that terminal box is arranged.
8. the method according to claim 7 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
Be characterized in that setting the interface there are three direction in the terminal box, two of them interface respectively with forward and backward adjacent terminal box
Corresponding wiring, the wiring corresponding with magnetostrictive displacement sensor of another interface.
9. the method according to claim 1 for monitoring track plank split automatically using magnetostrictive displacement range measurement principle,
It is characterized in that the vasculum configures the head end in transmission channel, is equipped in vasculum and converges each circuit board data and be uploaded to
GPRS communication module, electronic component and the battery component of cloud platform server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710781734.1A CN109425288A (en) | 2017-09-02 | 2017-09-02 | A method of track plank split is monitored automatically using magnetostrictive displacement range measurement principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781734.1A CN109425288A (en) | 2017-09-02 | 2017-09-02 | A method of track plank split is monitored automatically using magnetostrictive displacement range measurement principle |
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| CN201710781734.1A Pending CN109425288A (en) | 2017-09-02 | 2017-09-02 | A method of track plank split is monitored automatically using magnetostrictive displacement range measurement principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440749A (en) * | 2020-11-03 | 2022-05-06 | 西克埃泰克有限责任公司 | Magnetostrictive displacement sensor |
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|---|---|---|---|---|
| US4912406A (en) * | 1987-09-28 | 1990-03-27 | Alsthom | Device for determining position of a railway vehicle by measuring deviation in position of a magnet |
| CN1584491A (en) * | 2004-05-25 | 2005-02-23 | 上海磁浮交通工程技术研究中心 | Gap displacing sensor of high-speed magnetic suspension train |
| CN101476869A (en) * | 2008-12-08 | 2009-07-08 | 敦煌研究院 | Multi-point type displacement meter for monitoring displacement of earth historic relics cliff body and its use method |
| CN103332208A (en) * | 2013-07-02 | 2013-10-02 | 北京交通大学 | Steel rail longitudinal displacement on-line monitoring device |
-
2017
- 2017-09-02 CN CN201710781734.1A patent/CN109425288A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4912406A (en) * | 1987-09-28 | 1990-03-27 | Alsthom | Device for determining position of a railway vehicle by measuring deviation in position of a magnet |
| CN1584491A (en) * | 2004-05-25 | 2005-02-23 | 上海磁浮交通工程技术研究中心 | Gap displacing sensor of high-speed magnetic suspension train |
| CN101476869A (en) * | 2008-12-08 | 2009-07-08 | 敦煌研究院 | Multi-point type displacement meter for monitoring displacement of earth historic relics cliff body and its use method |
| CN103332208A (en) * | 2013-07-02 | 2013-10-02 | 北京交通大学 | Steel rail longitudinal displacement on-line monitoring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440749A (en) * | 2020-11-03 | 2022-05-06 | 西克埃泰克有限责任公司 | Magnetostrictive displacement sensor |
| CN114440749B (en) * | 2020-11-03 | 2024-02-06 | 西克埃泰克有限责任公司 | Magnetostrictive displacement sensor |
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