CN109870103A - A kind of electronics ruler for railway track joint maintenance test - Google Patents
A kind of electronics ruler for railway track joint maintenance test Download PDFInfo
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- CN109870103A CN109870103A CN201711268577.0A CN201711268577A CN109870103A CN 109870103 A CN109870103 A CN 109870103A CN 201711268577 A CN201711268577 A CN 201711268577A CN 109870103 A CN109870103 A CN 109870103A
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Abstract
The invention proposes a kind of electronics rulers for railway track joint maintenance test, including cabinet and the measuring device being arranged in cabinet, measuring device includes the dsp processor of the electronics leveling ruler and corresponding control measurement capacitor positioned at cabinet lower layer, electronics leveling ruler includes the plates capacitance of several parallel equidistants setting, it is connected between each plates capacitance by spi bus, capacitance measurement point and capacitor counting circuit are equipped on each plates capacitance, the upper layer of cabinet is equipped with the power supply and apparatus for transmitting signal of control processor and connection on a control processor, one end of dsp processor is connected with electronics leveling ruler by rigid line, the other end is connected with control processor.Detection device of the present invention compared to traditional steel rail smoothness, the electronics ruler measurement accuracy being made up of plates capacitance is high, can measure the flat conditions of each point on rail, and the position of out-of-flatness on rail can be intuitively found very much by curve, whole process is automatically performed, easy to operate.
Description
Technical field
The invention belongs to rail repair apparatus fields, and in particular to a kind of electronics for railway track joint maintenance test
Ruler.
Background technique
With the fast development of China's high-speed rail technology, gapless rail is more and more.All rail are all by short rail welding
It forms, rail long operational time, is easy for problems of welded quality occur at rail joint.In order to guarantee the peace of bullet train
Whether row for the national games must just be checked and accepted straight at rail joint to testing at rail joint.If asked at rail joint
Having inscribed will repair, and the safe operation needs of bullet train whether be met after maintenance, it is also necessary to carry out the examination of straightness.
The prior art examines the technical solution of rail joint straightness to use straight steel ruler, among observation ruler
Whether water vapor bubbles at the center of the glass tube of watch window determine whether level, and existing measuring technique is capable of measuring whole flat
Straight degree, but the straightness of each point in nearly 1 meter of weld cannot be precisely measured out and, measurement accuracy is low.
Other measure the technical method of steel rail straightness also at present: magnetic conductivity mensuration, resistive mensuration, spectrum point
Analysis method etc., but precision is not high, implements extremely complex.
Summary of the invention
It is an object of the invention to: for it is set forth above it is existing cannot be each point at bond weld nearly 1 meter
Straightness precisely measure out, the low problem of measurement accuracy, the present invention provides a kind of for railway track joint maintenance inspection
The electronics ruler tested.
The technical solution adopted by the invention is as follows:
A kind of electronics ruler for railway track joint maintenance test, including cabinet and the measurement being arranged in cabinet
Device, the measuring device include the dsp processor of the electronics leveling ruler and corresponding control measurement capacitor positioned at cabinet lower layer, electricity
Sub- leveling ruler includes the plates capacitance of several parallel equidistants setting, is connected between each plates capacitance by spi bus, each
Capacitance measurement point and capacitor counting circuit are equipped on plates capacitance, the upper layer of cabinet is equipped with control processor and connection
One end of power supply and apparatus for transmitting signal on a control processor, dsp processor is connected with electronics leveling ruler by rigid line, separately
One end is connected with control processor.
The working principle of this electronics ruler are as follows:
The integration of several plates capacitances is become one piece of plank, plates capacitance calculates electricity by capacitance measurement point and capacitor
Road has the function of to measure this plates capacitance, and leads to spi bus between plates capacitance and be connected, and is then attached to electronics leveling ruler
Top level control processor.
Top level control processor is sent to lower layer's plates capacitance by dsp processor and calculates capacitor program, start-up capacitance amount
It calculates, the capacitance then read back between each plates capacitance and rail by dsp processor.Control processor is to the capacitor to read back
Value carries out linear process, calibration parameter processing.Electronics ruler measurement accuracy is high, measures primary time-consuming less than 1 second, 6 sections 5 are dry
Battery can carry out 1000 times or more measurements, can save the in-site measurement time in this way.
Wherein, above-mentioned plates capacitance is substantially capacitance type sensor, and capacitance type sensor is that measured variation is converted
At a kind of sensor of electric capacitance change.Capacitance type sensor is not only widely used in the machinery such as displacement, vibration, angle, acceleration
The accurate measurement of amount, but also it is expanded to the survey for pressure, differential pressure, liquid level, level or component content etc. step by step
Amount.Capacitance type sensor is mainly characterized in that:
(1) small-power, high impedance；
(2) small electrostatic attraction and good dynamic characteristic；
(3) it is small that capacitance type sensor fever influence itself is compared with resistance sensor；
(4) non-cpntact measurement can be carried out；
(5) structure is simple, adaptable, can be bigger in temperature change or the adverse circumstances with various radiation in work
Make.
The major defect of capacitance type sensor:
(1) output has non-linear；
(2) influence of parasitic capacitance often reduces the sensitivity of sensor.
The basic functional principle of capacitance type sensor can be illustrated with plate condenser.Two separated by dielectric
The plate condenser of parallel metal sheet composition, if not considering edge effect, capacitance are as follows:
In formula: ε --- the dielectric constant of medium between capacitor plate, 0 ε r of ε=ε, wherein ε 0 is permittivity of vacuum, ε r
The medium relative dielectric constant between pole plate；A --- the area that two parallel-plates are covered；D --- the distance between two parallel-plates.
When measured parameter changes so that A, d or ε in formula change, capacitance C also changes therewith.If keeping it
In two parameter constants, and only change one of parameter, so that it may the variation of the parameter be converted to the variation of capacitance, led to
It crosses measuring circuit just and can be exchanged into electricity output.Therefore, capacitance type sensor can be divided into type polar distance variable, changed area and become and be situated between
Matter type three types.Our electronics ruler is constant using plates capacitance, and medium is air, so A, ε do not change, only with
D variation, capacitor just changes.Here it is the core theory of the application of electronics ruler bases.
When electronics ruler center is aligned at following rail welding, the rail of weld nearby, in the certain distance of left and right is not
It is smooth, will reduce electronics ruler internal polar plate capacitor between rail at a distance from.The variation of distance just influences whether corresponding measurement point
Capacitor variation.According to the capacitance formed between electronics ruler plates capacitance and rail, to calculate electronics ruler and steel
The distance between rail d.
If distance reduces Δ d by initial value d0 between plates capacitance, capacitance increases Δ C, then has
From the above equation, we can see that the output characteristics C=f (d) of capacitance sensor is not linear relationship, but hyperbolic relation.
Only in Δ d/d0 very little,About 1, then
Type polar distance variable capacitance formula sensor just has approximate linear convergent rate, but output range very little.
The present invention needs the first problem solved:
Distance and the non-thread problem of formed capacitance size between ruler plates capacitance and rail.
Solution is exactly to pass through many standard rulers of production, and standard ruler does many ladders by height difference.With in this way
Standard ruler come verify the non-linear of measurement and calibration.
The present invention needs the 2nd problem solved:
Since the circuit of capacitor itself between measurement electronics leveling ruler pole plate and rail will introduce distribution capacity, this is desirable
It excludes, otherwise measurement accuracy will have a greatly reduced quality.
Solution is exactly to be verified by mock standard leveling ruler, after being verified by the circuit to N number of measurement capacitor
Mathematical model is established and corrected, then develops dedicated algorithm software by certain check formula to measurement result
It is handled, electronics leveling ruler is finally made to reach the precision of design requirement.
Further, the number of the electronics leveling ruler top crown capacitor is 100.
Further, the apparatus for transmitting signal includes Bluetooth antenna, WIFI antenna.Pass through bluetooth or WIFI antenna and tool
There is measurement APP mobile communication, measurement result is transferred to mobile phone and shows that experiment curv and the specific error of measurement indicate.
Further, the cabinet upper layer is additionally provided with GPS antenna, control measurement switch and run indicator.
Further, the both ends of the electronics leveling ruler are equipped with the identical height fixed feet of height, the bottom surface of height fixed feet
Positioned at the lower section of electronics leveling ruler bottom surface.The consistency of the plates capacitance on electronics ruler in order to guarantee measurement and rail distance,
Mutually level fixed feet is mounted at electronics ruler both ends.
Further, the both ends of the electronics leveling ruler are equipped with magnet, and the bottom surface of magnet and the bottom surface of height fixed feet are located at
In same level.Magnet steadily can inhale electronics ruler on rail.100 on electronics ruler are ensured that in this way
The identical measuring pad capacitor of size and rail keep identical height.
Further, the top of the cabinet is equipped with handle.
Further, the material of the cabinet is aviation aluminium.In order to guarantee the straightness and hardness of electronics ruler itself, with
And the lightweight of instrument, reliability, ease of use.Casing structure is formed using whole aviation aluminium turnning and milling.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the present invention is surveyed compared to the detection device of traditional steel rail smoothness by the electronics ruler that plates capacitance forms
Accuracy of measurement is high, can measure the flat conditions of each point on rail, and can intuitively find very much on rail not by curve
Smooth position, whole process are automatically performed, easy to operate, can pass through WIFI or Bluetooth transmission measurement result；
2. the present invention can automatically mark the location of rail of measurement by control processor by GPS positioning parameter
On measurement result curve；
3. this electronics leveling ruler of the invention is light-weight, staff scene is easy to carry；
4. the primary time-consuming of present invention measurement was less than 1 second, 6 dry cells of section 5 can carry out 1000 times or more measurements, in this way
The in-site measurement time can be saved.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the schematic illustration of plates capacitance of the present invention；
Fig. 3 is the output characteristic curve of plates capacitance C=f (d) of the present invention；
Fig. 4 is the functional block diagram of electronics ruler of the present invention；
Fig. 5 is the exemplary diagram of a standard ruler in description of the invention.
Wherein, in which: 1-cabinet, 2-dsp processors, 3-plates capacitances, 4-control processors, 5-height are fixed
Foot, 6-magnet, 7-handles, 8-rail.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to Fig. 1-5 couples of present invention.
Embodiment 1:
As shown in Figs. 1-5, a kind of electronics ruler for railway track joint maintenance test, including cabinet 1 and setting
Measuring device in cabinet 1, the measuring device include the electronics leveling ruler and corresponding control measurement electricity positioned at 1 lower layer of cabinet
The dsp processor 2 of appearance, electronics leveling ruler includes the plates capacitance 3 of several parallel equidistants setting, between each plates capacitance 3
It is connected by spi bus, capacitance measurement point and capacitor counting circuit, the upper layer of cabinet 1 is equipped on each plates capacitance 3
Equipped with control processor 4 and the power supply and apparatus for transmitting signal that are connected on control processor 4, one end of dsp processor 2
It is connected with electronics leveling ruler by rigid line, the other end is connected with control processor 4.
The number of electronics leveling ruler top crown capacitor 3 is 100.The number of plates capacitance 3 herein is not limited to 100,
The number of plates capacitance 3 can be changed according to the actual situation.Apparatus for transmitting signal includes Bluetooth antenna, WIFI antenna.Pass through indigo plant
Measurement result is transferred to mobile phone and shows that experiment curv and measurement have by tooth or WIFI antenna with measurement APP mobile communication
Body error mark.1 upper layer of cabinet is additionally provided with GPS antenna, control measurement switch and run indicator.The both ends of electronics leveling ruler are set
There is the identical height fixed feet 5 of height, the bottom surface of height fixed feet 5 is located at the lower section of electronics leveling ruler bottom surface.In order to guarantee to measure
Electronics ruler on plates capacitance 3 and 8 distance of rail consistency, be mounted with mutually level height at electronics ruler both ends
Spend fixed feet 5.The both ends of electronics leveling ruler are equipped with magnet 6, and the bottom surface of magnet 6 and the bottom surface of height fixed feet 5 are located at same level
On face.Magnet 6 can steadily inhale electronics ruler on rail 8.100 size phases on electronics ruler are ensured that in this way
Same measuring pad capacitor 3 and rail 8 keeps identical height.The top of cabinet 1 is equipped with handle 7.The material of cabinet 1 is boat
Empty aluminium.In order to guarantee the straightness and hardness and the lightweight of instrument, reliability, ease of use of electronics ruler itself.
1 structure of cabinet is formed using whole aviation aluminium turnning and milling.
The integration of several plates capacitances 3 is become one piece of plank, plates capacitance 3 is calculated by capacitance measurement point and capacitor
Circuit has the function of to measure this plates capacitance, and leads to spi bus between plates capacitance 3 and be connected, and is then attached to electronics leveling ruler
Top level control processor 4.
Top level control processor 4 is sent to lower layer's plates capacitance 3 by dsp processor 2 and calculates capacitor program, start-up capacitance
Amount calculates, the capacitance then read back between each plates capacitance 3 and rail 8 by dsp processor 2.Control processor 4 is to reading back
Capacitance carry out linear process, calibration parameter processing.Electronics ruler measurement accuracy is high, measures primary time-consuming less than 1 second, electricity
The power consumption for holding sensor is small, and 6 dry cells of section 5 can carry out 1000 times or more measurements, can save in-site measurement in this way
Time, and cruise duration is long.
When in use, the cabinet 1 of electronics ruler need to be only placed on rail 8, rail 8 is made by height fixed feet 5
There are distances between electronics ruler, and guarantee that electronics is straight in measurement process by the attraction between magnet 6 and rail 8
Ruler can be steadily placed on rail 8, be then turned on control measurement switch, opened measurement, control processor 4 ties measurement
Fruit carries out linear process, obtains measurement result curve.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (8)
1. a kind of electronics ruler for railway track joint maintenance test including cabinet (1) and is arranged in cabinet (1)
Measuring device, which is characterized in that the measuring device includes the electronics leveling ruler and corresponding control measurement electricity positioned at cabinet (1) lower layer
The dsp processor (2) of appearance, electronics leveling ruler include the plates capacitance (3) of several parallel equidistants setting, each plates capacitance (3)
Between connected by spi bus, be equipped with capacitance measurement point and capacitor counting circuit, cabinet (1) on each plates capacitance (3)
Upper layer be equipped with control processor (4) and the power supply and apparatus for transmitting signal that are connected on control processor (4), DSP processing
One end of device (2) is connected with electronics leveling ruler by rigid line, and the other end is connected with control processor (4).
2. a kind of electronics ruler for railway track joint maintenance test according to claim 1, which is characterized in that institute
The number for stating electronics leveling ruler top crown capacitor (3) is 100.
3. a kind of electronics ruler for railway track joint maintenance test according to claim 1 or 2, feature exist
In the apparatus for transmitting signal includes Bluetooth antenna, WIFI antenna.
4. a kind of electronics ruler for railway track joint maintenance test according to claim 3, which is characterized in that institute
It states cabinet (1) upper layer and is additionally provided with GPS antenna, control measurement switch and run indicator.
5. a kind of electronics ruler for railway track joint maintenance test according to claim 1, which is characterized in that institute
The both ends for stating electronics leveling ruler are equipped with the identical height fixed feet (5) of height, and the bottom surface of height fixed feet (5) is located at electronics leveling ruler bottom
The lower section in face.
6. a kind of electronics ruler for railway track joint maintenance test according to claim 5, which is characterized in that institute
The both ends for stating electronics leveling ruler are equipped with magnet (6), and the bottom surface of magnet (6) and the bottom surface of height fixed feet (5) are located at same level
On.
7. a kind of electronics ruler for railway track joint maintenance test according to claim 1, which is characterized in that institute
The top for stating cabinet (1) is equipped with handle (7).
8. a kind of electronics ruler for railway track joint maintenance test according to claim 1, which is characterized in that institute
The material for stating cabinet (1) is aviation aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268577.0A CN109870103A (en) | 2017-12-05 | 2017-12-05 | A kind of electronics ruler for railway track joint maintenance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711268577.0A CN109870103A (en) | 2017-12-05 | 2017-12-05 | A kind of electronics ruler for railway track joint maintenance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109870103A true CN109870103A (en) | 2019-06-11 |
Family
ID=66916450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711268577.0A Pending CN109870103A (en) | 2017-12-05 | 2017-12-05 | A kind of electronics ruler for railway track joint maintenance test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109870103A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427831A (en) * | 2022-01-27 | 2022-05-03 | 苏州浪潮智能科技有限公司 | Metal product flatness detection method and device and electronic equipment |
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| WO1994027114A1 (en) * | 1993-05-10 | 1994-11-24 | Exa Ingenierie | Device for measuring straightness |
| CN101266167A (en) * | 2008-04-08 | 2008-09-17 | 太原理工大学 | Capacitance type digital material-level sensor and its measurement method |
| CN201199147Y (en) * | 2007-12-25 | 2009-02-25 | 成都四方瑞邦测控科技有限责任公司 | Instrument for checking steel rail straight degree of railway rail |
| CN201811709U (en) * | 2010-10-09 | 2011-04-27 | 高金宏 | Digital display rail flatness measuring instrument |
| CN203148402U (en) * | 2013-04-09 | 2013-08-21 | 秦培煜 | Dynamic flatness detection device for steel rail |
| CN104390609A (en) * | 2014-11-14 | 2015-03-04 | 武汉钢铁(集团)公司 | Automatic online steel rail straightness measuring instrument |
| CN204461368U (en) * | 2015-03-25 | 2015-07-08 | 晨唐(北京)技术股份有限公司 | rail flatness measuring instrument |
| CN105865379A (en) * | 2016-06-03 | 2016-08-17 | 天津银龙预应力材料股份有限公司 | Rail plate steel mold detection system |
| CN105973190A (en) * | 2016-05-17 | 2016-09-28 | 滨州学院 | Building ground flatness detection apparatus |
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2017
- 2017-12-05 CN CN201711268577.0A patent/CN109870103A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994027114A1 (en) * | 1993-05-10 | 1994-11-24 | Exa Ingenierie | Device for measuring straightness |
| CN201199147Y (en) * | 2007-12-25 | 2009-02-25 | 成都四方瑞邦测控科技有限责任公司 | Instrument for checking steel rail straight degree of railway rail |
| CN101266167A (en) * | 2008-04-08 | 2008-09-17 | 太原理工大学 | Capacitance type digital material-level sensor and its measurement method |
| CN201811709U (en) * | 2010-10-09 | 2011-04-27 | 高金宏 | Digital display rail flatness measuring instrument |
| CN203148402U (en) * | 2013-04-09 | 2013-08-21 | 秦培煜 | Dynamic flatness detection device for steel rail |
| CN104390609A (en) * | 2014-11-14 | 2015-03-04 | 武汉钢铁(集团)公司 | Automatic online steel rail straightness measuring instrument |
| CN204461368U (en) * | 2015-03-25 | 2015-07-08 | 晨唐(北京)技术股份有限公司 | rail flatness measuring instrument |
| CN105973190A (en) * | 2016-05-17 | 2016-09-28 | 滨州学院 | Building ground flatness detection apparatus |
| CN105865379A (en) * | 2016-06-03 | 2016-08-17 | 天津银龙预应力材料股份有限公司 | Rail plate steel mold detection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427831A (en) * | 2022-01-27 | 2022-05-03 | 苏州浪潮智能科技有限公司 | Metal product flatness detection method and device and electronic equipment |
| CN114427831B (en) * | 2022-01-27 | 2023-08-04 | 苏州浪潮智能科技有限公司 | Metal product flatness detection method and device and electronic equipment |
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Application publication date: 20190611 |