CN110207589B - Dynamic calibration system and method - Google Patents
Dynamic calibration system and method Download PDFInfo
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- CN110207589B CN110207589B CN201910541641.0A CN201910541641A CN110207589B CN 110207589 B CN110207589 B CN 110207589B CN 201910541641 A CN201910541641 A CN 201910541641A CN 110207589 B CN110207589 B CN 110207589B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 72
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a dynamic calibration system and a method, wherein the dynamic calibration system comprises a calibration unit, a trigger unit and a control unit; the calibration unit has at least partial appearance of the vehicle wheel and can move along the track to pass through the triggering unit and the wheel pair size detection device (10); on the moving path of the calibration unit, the trigger unit is arranged upstream of the wheel set size detection device (10) to send a trigger signal to the control unit when the calibration unit passes the trigger unit; the control unit is set to start timing when receiving the trigger signal and control the wheel pair size detection equipment (10) to work when presetting time. The dynamic calibration system can ensure the calibration accuracy and is easy to install and control.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a dynamic calibration system and a dynamic calibration method.
Background
The dynamic wheel set size detecting system for railway vehicle is one on-line detecting system for measuring the outer size of wheel set. In order to ensure the measurement accuracy of the detection system, the detection system needs to be calibrated and maintained regularly. The existing detection system calibration mode adopts a mode of irradiating a static calibration target plate to calibrate system parameters, and the mode cannot simulate the laser irradiation condition in the running process of a wheel, so that the calibration accuracy cannot be ensured.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a dynamic calibration system which can ensure the calibration accuracy and is easy to install and control.
In order to achieve the above object, one aspect of the present invention provides a dynamic calibration system for calibrating a wheel set size detection device of a railway vehicle, the dynamic calibration system including a calibration unit, a trigger unit, and a control unit; the calibration unit has at least partial appearance of the vehicle wheel and can move along the track to pass through the triggering unit and the wheel pair size detection device; on a moving path of the calibration unit, the trigger unit is arranged upstream of the wheel set size detection device to send a trigger signal to the control unit when the calibration unit passes the trigger unit; the control unit is set to start timing when receiving the trigger signal and control the wheel set size detection equipment to work when presetting time.
Optionally, the dynamic calibration system includes a frame body capable of moving along the rail, and the calibration unit is mounted on the frame body.
Optionally, the frame body is of a flat plate-shaped structure, the calibration unit includes an upright column, a cross beam and two calibration modules, the upright column is vertically disposed on a plane where the frame body is located, the cross beam is disposed on the top of the upright column and perpendicular to the upright column, and the two calibration modules respectively have partial appearances of the wheels and are disposed at two ends of the cross beam.
Optionally, the two calibration modules are symmetrically arranged relative to a midpoint of the cross beam.
Optionally, the dynamic calibration system includes a determining unit, and the determining unit is configured to determine whether the calibration unit is located at a calibration position for calibrating the wheel set size detection device at the preset time.
Optionally, the judging unit includes a projection plate capable of sending a signal when receiving the laser emitted by the wheel set size detecting device, and the projection plate is installed in the calibration module.
Optionally, the dynamic calibration system includes a driving unit mounted on the frame body to drive the frame body to move along the rail.
Optionally, the driving unit includes a driving wheel and a driving motor installed on the frame body, and an output shaft of the driving motor is connected to the driving wheel.
A second aspect of the present invention provides a dynamic calibration method according to the above dynamic calibration system, including the following steps: s1, when the calibration device passes through the trigger unit, the trigger unit sends a trigger signal to the control unit; s2, controlling the wheel pair size detection equipment to emit laser when the control unit receives the trigger signal and then presets time; s3, if the laser irradiates the calibration module of the calibration device, the control unit controls the wheel set size detection equipment to detect the calibration module.
Optionally, the step S2 includes a step S2-1: the control unit selectively performs the step S3 or S4 according to the feedback result of the laser; step S4, if the laser is irradiated on the projection board indicating that the calibration device is not located at the designated calibration position, adjusting the preset time and re-executing step S1.
By the technical scheme, the calibration unit has at least partial appearance of the vehicle wheel, namely, the calibration unit is at least an arc structure of a section of wheel, and can be a complete wheel structure, and for the calibration unit with the arc structure, the intercepted part of the wheel is just the part detected by the wheel pair size detection device. The calibration unit can move along the track, when the calibration unit passes through the trigger unit, the trigger unit sends a trigger signal to the control unit, the control unit starts timing when receiving the trigger signal and controls the wheel set size detection equipment to work at preset time, namely, the wheel set size detection equipment detects the calibration unit at the preset time, so that the aim of calibrating the wheel set size detection equipment is fulfilled. The preset time here is generally set to: and starting from the trigger unit sending a trigger signal to the control unit until the calibration unit just moves to a calibration position for detection of the wheel pair size detection equipment.
According to the wheel pair size detection device and the calibration method thereof, the calibration unit capable of moving along the track is adopted to simulate the wheels in the vehicle running state, so that the detection result of the wheel pair size detection device is more consistent with the detection of the wheels under the real condition, and the calibration accuracy can be greatly improved by adopting the method to calibrate the wheel pair size detection device. In addition, since the wheelset size detection device is usually installed between two sleepers, the calibration position of two adjacent wheelset size detection devices is located just above the sleepers, which results in no way to install the trigger unit directly at the calibration position. Therefore, the trigger unit is arranged at the position, which is easy to install, of the upstream of the wheel set size detection device, and the control unit is combined to enable the control unit to control the wheel set size detection device to work when the calibration unit just moves to the calibration position, so that the dynamic calibration system is greatly convenient to install and control on the premise of ensuring the calibration accuracy.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a dynamic calibration system of the present invention, wherein the calibration unit is located at the calibration position at a preset time;
FIG. 2 shows the calibration unit of FIG. 1 failing to reach the predetermined position at a predetermined time;
fig. 3 shows that the calibration unit in fig. 1 has passed the calibration position at a preset time.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 3, the dynamic calibration system for calibrating a wheel set size detection device 10 of a railway vehicle of the present invention includes a calibration unit, a trigger unit (which may be in the form of magnetic steel, etc., and is not limited thereto) and a control unit; the calibration unit has at least a partial shape of a vehicle wheel and can move along the rail to pass through the triggering unit and the wheel pair size detection device 10; on the moving path of the calibration unit, a trigger unit is arranged upstream of the wheel set size detection device 10 to send a trigger signal to the control unit when the calibration unit passes the trigger unit; the control unit is configured to start timing when receiving the trigger signal and control the wheel-pair size detection apparatus 10 to operate at a preset time.
In the present invention, the calibration unit has at least a partial shape of the vehicle wheel, i.e. the calibration unit is at least an arc-shaped structure of a section of the wheel, and may of course be a complete wheel structure, and for the calibration unit with the arc-shaped structure, the section of the wheel taken by the calibration unit is just the section detected by the wheel pair size detection device 10. Because the calibration unit can move along the track, when the calibration unit passes through the trigger unit, the trigger unit sends a trigger signal to the control unit, the control unit starts timing when receiving the trigger signal and controls the wheel pair size detection device 10 to work at the preset time, namely, the wheel pair size detection device 10 detects the calibration unit at the preset time, so that the calibration purpose of the wheel pair size detection device 10 is realized. The preset time here is generally set to: starting from the triggering unit sending a triggering signal to the control unit until the calibration unit has just moved to the calibration position for detection by the wheel-set dimension detection device 10.
According to the invention, because the calibration unit capable of moving along the track is adopted to simulate the wheels in the vehicle running state, the detection result of the wheel pair size detection device 10 is more consistent with the detection of the wheels under the real condition, and the accuracy of calibration can be greatly improved by calibrating the wheel pair size detection device 10 in such a way. In addition, since the wheelset size detection unit 10 is usually installed between two sleepers, the calibration position of two adjacent wheelset size detection units 10 is located just above the sleepers, which results in no way to install the trigger unit directly at the calibration position. Therefore, the trigger unit is arranged at the position, which is easy to install, on the upstream of the wheel set size detection device 10, and the control unit is combined to enable the control unit to control the wheel set size detection device 10 to work when the calibration unit just moves to the calibration position, so that the dynamic calibration system is greatly convenient to install and control on the premise of ensuring the calibration accuracy.
In order to ensure the stability of the movement of the calibration unit, optionally, the dynamic calibration system includes a frame body capable of moving along the track, and the calibration unit is mounted on the frame body.
It should be understood that the frame body can be designed into various forms as long as the calibration unit can be stably installed, in one embodiment of the present invention, as shown in fig. 1, the frame body is a flat plate-shaped structure, the calibration unit includes a vertical column 21, a cross beam 22 and two calibration modules 23, the vertical column 21 is vertically arranged on the plane where the frame body is located, the cross beam 22 is arranged on the top of the vertical column 21 and is perpendicular to the vertical column 21, the two calibration modules 23 are the structures of the partial treads of the wheels, the two calibration modules 23 are arranged at two ends of the cross beam 22, the treads of the wheels simulated by the two calibration modules 23 on the same cross beam 22 are respectively arranged obliquely downward away from each other, so that the detection paths of the two opposite wheel pair size detection devices 10 can be satisfied.
In general, the detection paths of two opposite wheel pair size detection apparatuses 10 are symmetrical with respect to the vertical direction, so in order to enable the two opposite detection paths to respectively detect two calibration modules 23 on the same cross beam 22, in one embodiment of the present invention, the two calibration modules 23 are symmetrically arranged with respect to the midpoint of the cross beam 22, that is, the two calibration modules 23 respectively take two tread portions of the wheels symmetrically arranged with respect to the vertical direction passing through the centers of the two tread portions.
In order to facilitate the movement of the frame body and the calibration unit mounted on the frame body, optionally, the dynamic calibration system includes a driving unit mounted on the frame body to drive the frame body to move along the rail.
It should be understood that the driving unit of the present invention may take various forms as long as the frame body and the calibration unit mounted on the frame body can be driven to move integrally along the track, and in one embodiment of the present invention, the driving unit includes a driving wheel mounted on the frame body and a driving motor, and an output shaft of the driving motor is connected with the driving wheel.
For some reasons, it may happen that the calibration unit is not located at the calibration position just before the preset time timed by the control unit, which may cause a calibration error of the wheel set size detection device 10 or even fail to perform calibration. For this reason, it is necessary to ensure that the calibration unit also moves to the calibration position just before the preset time, so as to ensure that the wheel set size detection device 10 can be accurately calibrated. Therefore, in one embodiment of the present invention, the dynamic calibration system includes a determination unit for determining whether the calibration unit is in the calibration position for calibrating the wheel-pair size detection apparatus 10 at the preset time.
It should be understood that the determining unit may be designed in various forms, for example, a speed sensor may be added to the calibration unit under the condition that the distance between the triggering unit and the calibration position is known, so as to calculate the real moving time through the distance and the speed, and then compare the real moving time with the preset time to perform the adjustment. In order to more intuitively and simply judge whether the calibration unit is located at the calibration position in the preset time, optionally, as shown in fig. 1 to 3, the judgment unit includes a projection plate 30 capable of sending a signal when receiving the laser emitted by the wheel set size detection device 10, and the projection plate 30 is installed in the calibration module 23.
As can be seen from fig. 1, when the calibration unit is located at the calibration position at the preset time, the laser emitted by the two wheel set size detection devices 10 is irradiated on the calibration module 23, but not irradiated on the projection plate 30, that is, in actual operation, if the projection plate 30 does not receive the laser emitted by the wheel set size detection device 10 after the preset time, it indicates that the calibration unit has just moved to the calibration position at the preset time, and the calibration result can be analyzed.
If as shown in fig. 2 or fig. 3, when the calibration unit is located at the calibration position at the preset time, the laser emitted by one of the two wheel set size detection devices 10 irradiates the calibration module 23 (when the preset time value is set, the situation that the laser emitted by the two wheel set size detection devices 10 does not irradiate the calibration module 23 with such a large deviation does not occur), and the projection plate 30 receives the laser, it indicates that the calibration unit does not move to the calibration position at the preset time, and therefore the calibration result cannot be analyzed, but the preset time value or the moving speed of the calibration unit needs to be adjusted until the laser emitted by the two wheel set size detection devices 10 irradiates the calibration module 23.
By adopting the projection plate 30, whether the calibration unit is located at the calibration position at the preset time can be effectively realized on the basis of keeping the structure simple.
The invention also provides a dynamic calibration method according to the dynamic calibration system, which comprises the following steps:
s1, when the calibration device passes through the trigger unit, the trigger unit sends a trigger signal to the control unit;
s2, when the control unit receives the trigger signal and preset time, the control unit controls the wheel pair size detection device 10 to emit laser, and the control unit selects to execute the step S3 or S4 according to the feedback result of the laser;
and S3, if the laser irradiates the calibration module 23 of the calibration device, the control unit controls the wheel set size detection equipment 10 to detect the calibration module 23.
S4, if the laser is irradiated on the projection board 30 indicating that the calibration device is not located at the designated calibration position, adjusting the value of the preset time or adjusting the moving speed of the calibration device and re-executing the step S1 until the laser is no longer irradiated on the projection board 30 but only on the calibration module 23.
The dynamic calibration system can ensure the calibration accuracy by adopting a dynamic calibration mode, and the trigger unit is arranged at the position which is easy to install and is positioned at the upstream of the wheel set size detection equipment 10, and the control unit is combined to ensure that the control unit controls the wheel set size detection equipment 10 to work when the calibration unit just moves to the calibration position, so that the installation and the control of the dynamic calibration system can be facilitated on the premise of ensuring the calibration accuracy.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (7)
1. A dynamic calibration system for calibrating wheel set size detection equipment (10) of a railway vehicle is characterized by comprising a calibration unit, a trigger unit and a control unit;
the calibration unit has at least partial appearance of the vehicle wheel and can move along the track to pass through the triggering unit and the wheel pair size detection device (10);
on the moving path of the calibration unit, the trigger unit is arranged upstream of the wheel set size detection device (10) to send a trigger signal to the control unit when the calibration unit passes the trigger unit;
the control unit is set to start timing when receiving the trigger signal and control the wheel set size detection equipment (10) to work when presetting time;
the dynamic calibration system comprises a frame body which can move along the track, and the calibration unit is arranged on the frame body; the frame body is of a flat plate-shaped structure, the calibration unit comprises an upright column (21), a cross beam (22) and two calibration modules (23), the upright column (21) is vertically arranged on a plane where the frame body is located, the cross beam (22) is arranged at the top of the upright column (21) and is vertical to the upright column (21), and the two calibration modules (23) respectively have partial appearances of the wheels and are arranged at two ends of the cross beam (22);
the dynamic calibration system comprises a judging unit, and the judging unit is used for judging whether the calibration unit is located at a calibration position for calibrating the wheel pair size detection equipment (10) or not at the preset time.
2. The dynamic calibration system according to claim 1, wherein two of the calibration modules (23) are symmetrically arranged with respect to a midpoint of the cross beam (22).
3. The dynamic calibration system according to claim 1, wherein the determination unit comprises a projection plate (30) capable of sending a signal upon receiving the laser emitted by the wheel set size detection device (10), the projection plate (30) being mounted to the calibration module (23).
4. The dynamic calibration system as claimed in any one of claims 1 to 3, wherein the dynamic calibration system comprises a driving unit mounted to the frame body to drive the frame body to move along the rail.
5. The dynamic calibration system of claim 4, wherein the driving unit comprises a driving wheel mounted on the frame body and a driving motor, and an output shaft of the driving motor is connected with the driving wheel.
6. A dynamic calibration method of a dynamic calibration system according to any one of claims 1 to 5, characterized in that the dynamic calibration method comprises the following steps:
s1, when the calibration device passes through the trigger unit, the trigger unit sends a trigger signal to the control unit;
s2, controlling the wheel pair size detection equipment (10) to emit laser when the control unit receives the trigger signal and then presets time;
s3, if the laser irradiates on a calibration module (23) of the calibration device, the control unit controls the wheel set size detection equipment (10) to detect the calibration module (23).
7. The dynamic calibration method as claimed in claim 6, wherein the step S2 includes a step S2-1: the control unit selectively performs the step S3 or S4 according to the feedback result of the laser;
and step S4, if the laser is irradiated on the projection plate (30) which represents that the calibration device is not located at the designated calibration position, adjusting the length of the preset time and executing step S1 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910541641.0A CN110207589B (en) | 2019-06-21 | 2019-06-21 | Dynamic calibration system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910541641.0A CN110207589B (en) | 2019-06-21 | 2019-06-21 | Dynamic calibration system and method |
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| CN110207589A CN110207589A (en) | 2019-09-06 |
| CN110207589B true CN110207589B (en) | 2021-07-13 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006024040B3 (en) * | 2006-05-23 | 2007-07-19 | Hegenscheidt-Mfd Gmbh & Co. Kg | Wheel sets and wheel`s actual state measuring device for railway vehicle, has beam optical equipment supported in vibration-free manner in pre-determined position against measuring section of device on formation of track system |
| CN100453375C (en) * | 2006-06-23 | 2009-01-21 | 西南交通大学 | On-line dynamic detecting device of locomotive wheel lset exterior size |
| CN104330029A (en) * | 2014-11-21 | 2015-02-04 | 柳州科路测量仪器有限责任公司 | Calibration device of automatic laser wheel set measurement machine |
| CN104501719A (en) * | 2014-12-18 | 2015-04-08 | 北京康拓红外技术股份有限公司 | Method for determining axial line of train wheel set |
| CN105844624B (en) * | 2016-03-18 | 2018-11-16 | 上海欧菲智能车联科技有限公司 | Combined optimization method and device in dynamic calibration system, dynamic calibration system |
| CN106383247B (en) * | 2016-08-24 | 2019-06-11 | 宁波市江北九方和荣电气有限公司 | A kind of railcar wheel is to dynamic on-line monitoring system and method for detecting vehicle speed |
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