CN202276507U - Light source adjustment device - Google Patents
Light source adjustment device Download PDFInfo
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- CN202276507U CN202276507U CN2011203536614U CN201120353661U CN202276507U CN 202276507 U CN202276507 U CN 202276507U CN 2011203536614 U CN2011203536614 U CN 2011203536614U CN 201120353661 U CN201120353661 U CN 201120353661U CN 202276507 U CN202276507 U CN 202276507U
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Abstract
The utility model provides a light source adjustment device, comprising a host computer, an adjuster connected with the host computer, a power supply drive module and a light source connected with the power supply drive module, wherein the adjuster comprises a control plate, the control plate comprises an A/D conversion module, a judgment module, a counting module, a photoelectric coupling module and a D/A conversion module which are connected in turn; the judgment module is provided with data ranges of areas, the counting module comprises a plurality of counters, each counter is respectively connected with the judgment module, each data range is corresponded with each counter, the photoelectric coupling module comprises a plurality of photoelectric couplers respectively connected with each counter, each photoelectric coupler is connected with the D/A conversion module; the power supply drive module is connected with the D/A conversion module and the adjustment of the lightness of the light source is controlled by the power supply drive module according to the signal of the D/A conversion module. The light source changes due to change in the outside natural environment ray.
Description
Technical field
The utility model relates to railway territory, especially, relates to a kind of light source adjusting device.
Background technology
Present tour detection system is in the process of measuring, and the light source that tour detection system using system itself carries shines object, so that make an inspection tour the camera of detection system object is carried out image taking.
But object can pass through different periods and different locations in the process of operation.Like this, object the natural environment light in the external world of process always changing.Yet the light source that tour detection system itself carries can not change because of the variation of extraneous light, and this absorbs high-quality target image to camera has very big influence.
The utility model content
The utility model purpose is to provide a kind of light source adjusting device, the technical problem that can not change because of the variation of extraneous natural environment light with light source that solve to make an inspection tour detection system.
For realizing above-mentioned purpose; An aspect according to the utility model; A kind of light source adjusting device is provided; This light source adjusting device comprises the host computer of a receiving target image and the adjuster that is connected with host computer, and the light source adjusting device also comprises electric power driving module and the light source that is connected with electric power driving module; Adjuster comprises a control board, and control board comprises A/D modular converter, judge module, counting module, photoelectricity coupling module and the D/A modular converter that connects successively, and wherein, the A/D modular converter is connected with host computer; Judge module is provided with the number range in a plurality of zones; Counting module comprises a plurality of counters; Each counter is connected with judge module respectively; And corresponding each counter of each number range, the photoelectricity coupling module comprises a plurality of photoelectrical couplers that are connected with each counter respectively, each photoelectrical coupler all connects the D/A modular converter; Electric power driving module is connected in the D/A modular converter, and electric power driving module is controlled the brightness regulation of light source according to the signal of D/A modular converter.
Further, each counter in the counting module is that to have initial value and set point and initial value be zero counter.
Further, the host computer of light source adjusting device is connected with a plurality of cameras, and camera is used to gather target image and target image is sent to host computer.
Further, host computer is through IMAQ card connection camera, and image pick-up card is used to receive and store the target image that each camera obtains, and image pick-up card is used for target image is sent to host computer.
Further, the host computer of light source adjusting device is connected with the external trigger module, and the external trigger module comprises tachogenerator, photoelectric encoder and the synchronous trigger circuit plate that connects in order, and the synchronous trigger circuit plate connects each camera.
The utlity model has following beneficial effect:
Through the utility model, can reach the effect that the light source of making an inspection tour detection system can change because of the variation of extraneous natural environment light.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the tour detection system of the utility model preferred embodiment;
Fig. 2 is the structural representation of the light source adjusting device of the utility model preferred embodiment;
Fig. 3 is the method flow diagram that the light source of the using light source adjusting device realization of the utility model preferred embodiment is regulated; And
Fig. 4 is the structural representation of the external trigger module of the utility model preferred embodiment.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, make an inspection tour detection system and comprise installing rack 8, a plurality of light sources 1 and a plurality of camera 3 that are positioned at object 9 tops are installed on the installing rack 8 symmetrically.Light source 1 and camera 3 all are connected with host computer 7.In the process that installing rack 8 moves along object 9 with certain speed, light source 1 luminous irradiation object 9; 3 pairs of objects of camera 9 carry out the shooting of image, thereby obtain target image.Afterwards, camera 3 sends to host computer 7 with target image, and through the image processing system in the host computer 7 target image of receiving is carried out analyzing and processing.
In other embodiments, do not need installing rack 8, but light source 1 and camera 3 are installed on the bottom of locomotive symmetrically, and make locomotive along object 9 operations.
Preferably, in this execution mode, the target image that camera 3 is absorbed can be stored in earlier in the data collecting card 5, and data collecting card 5 is delivered to host computer 7 with target image again and carries out analyzing and processing.
Make an inspection tour detection system in the process of operation, extraneous natural environment light is always changing.For avoiding of the influence of natural environment light, require light source 1 brightness high, good uniformity, good stability to object 9 testings.In order to improve the whole tour detection system adaptability of natural environment light to external world; To different measurement period (like day or night) and different measurement location (like the tunnel; Complex conditions such as Plain), the brightness of light source 1 is to regulate in the whole service process.The brightness of light source 1 has influenced in shooting quality and the host computer 7 of target image image processing system to the accuracy of target image identification.Therefore, in this execution mode, utilize the light source adjusting device that light source 1 is regulated.
The light source adjusting device comprises host computer 7, the electric power driving module 4 of above-mentioned receiving target image and the adjuster 2 that is connected with host computer 7.
Please combine with reference to Fig. 2, adjuster 2 comprises a control board 21, and control board 21 comprises A/D modular converter 211, judge module 213, counting module 215, photoelectricity coupling module 217 and the D/A modular converter 219 that connects successively.A/D modular converter 211 is connected with judge module 213 with host computer 7 respectively; A/D modular converter 211 is used to accept host computer 7 signals, and the conversion of signals that host computer 7 passes over is become to be delivered to judge module 213 after judge module 213 identified signal and to judge.Judge module 213 is provided with the number range in a plurality of zones.Counting module 215 comprises a plurality of counters.Each counter all is connected with judge module 213, and makes the corresponding counter of each regional number range in the judge module 213.The initial value of each counter is zero, and each counter is provided with set point.Photoelectricity coupling module 217 comprises a plurality of photoelectrical couplers that connect with corresponding counter respectively, and each photoelectrical coupler all connects D/A modular converter 219.D/A modular converter 219 is connected with electric power driving module 4, and electric power driving module 4 is controlled the brightness regulation of light source 1 according to the signal of D/A modular converter.
Please combine with reference to Fig. 3, the light source adjusting device of the utility model is following to the detailed process that light source 1 carries out brightness regulation:
Step S01, host computer 7 receives the target image that camera 3 is taken, and the intensity of light source analytical system in the host computer 7 is carried out check and analysis to the intensity of target image, thereby obtains the analog image strength signal.Host computer 7 sends to the analog image strength signal A/D modular converter 211 of light source adjusting device.
Step S02, A/D modular converter 211 converts the analog image strength signal to the digital picture strength signal, and then obtains the A/D value, and A/D modular converter 211 sends to judge module 213 with the A/D value.
Step S03, judge module 213 judge that the A/D value is whether in arbitrary regional number range of the number range in a plurality of zones of judge module 213, if then carry out step S04, if not, then do not do any processing.
Step S04, the initial value of the counter corresponding with the regional number range at A/D value place adds 1 automatically, thereby obtains end value.
Step S05, whether the counter judged result value of the above-mentioned correspondence of judge module 213 equals the set point of this correspondence counter, if not, then turn back to step S01, if then carry out step S06.
Step S06; The photoelectrical coupler conducting that corresponding counter with this connects in the photoelectricity coupling module 217 of light source adjusting device; Simultaneously should correspondence counter automatic clear, this photoelectrical coupler generates digital signal level, and digital signal level is sent to D/A modular converter 219.
Step S07, D/A modular converter 219 convert the digital signal level that receives to analog voltage signal and analog voltage signal are directly sent to the electric power driving module 4 of light source adjusting device.
Step S08, electric power driving module 4 changes according to the brightness of analog voltage signal control light source 1.
Preferably, in this execution mode, the utility model has carried out brightness regulation through the light source adjusting device three times to light source 1, and after regulating each time, control light source 1 is corresponding sends first order intensity light, second level intensity light and third level intensity light.The concise and to the point process that light source adjusting device adjusting light source 1 successively sends first order intensity light, second level intensity light and third level intensity light is asked for an interview as follows:
In the process of making an inspection tour the detection system operation; The light source adjusting device adopts above-mentioned steps S01 to carry out the adjusting of first order intensity light to step S08 to light source 1; After this, if the ambient light of extraneous nature is still changing, then the light source adjusting device is further regulated light source 1; Be that the light source adjusting device repeats the step of above-mentioned steps S01 to step S08 once more, regulate light source 1 and send second level intensity light.Regulate light source 1 in the light source adjusting device and send in the process of second level intensity light, light source 1 is still by first order intensity target illuminated thing 9.The light source adjusting device is after the adjusting of accomplishing second level intensity light, if the ambient light of extraneous nature is still changing, the light source adjusting device repeats the step of above-mentioned steps S01 to step S08 once more, regulates light source 1 and sends third level intensity light.Regulate light source 1 in the light source adjusting device and send in the process of third level intensity light, light source 1 is still by second level intensity target illuminated thing 9.
In other embodiment of the utility model, can increase or reduce the number of the number range of judge module 213 according to different natural environment light and geographical environment.Simultaneously, the number of increase or minimizing and the corresponding counter of number range, and the number of the photoelectricity coupling module 217 that is connected with counter of increase or minimizing.Therefore, the light source adjusting device is not limited in three grades of adjustings of the foregoing description to the adjusting rank of the intensity of light source 1, but can carry out the setting of different brackets according to different external condition.
In order to obtain high-quality target image further, need carry out Synchronization Control to the line scan rate of camera 3 and the speed of service of installing rack 8.Because in the process of object 9 operations, its speed is non-homogeneous constant at installing rack 8.Installing rack 8 speeds of service inhomogeneous gathered target images to camera 3 and brings influence, will cause the difference of detection resolution on the two-dimensional directional of each machine machine 3, finally can have influence on the accuracy of detection of making an inspection tour detection system.Therefore, for the line scan rate that can regulate camera 3 according to the change information of the movement velocity of installing rack 8, can control the line scan rate of camera 3 through external trigger module 6.
Please combine referring to Fig. 4, external trigger module 6 comprises a tachogenerator 61, photoelectric encoder 63 and synchronous trigger circuit plate 65.The input of photoelectric encoder 63 is connected on the tachogenerator 61.The output of photoelectric encoder 63 is connected on the synchronous trigger circuit plate 65.Each camera 3 all is connected to the synchronous trigger circuit plate 65 of external trigger module 6.At installing rack 8 in the process of object 9 operation, the speed of service that tachogenerator 61 is gathered installing racks 8, and the speed of service that collects sent to photoelectric encoder 63.Photoelectric encoder 63 produces the different TTL square wave of frequency according to the different speeds of service, and the TTL square wave is sent to synchronous trigger circuit plate 65.Synchronous trigger circuit plate 65 converts the TTL square wave into LVDS or the RS232 signal triggering signal as camera 3, and then regulates camera 3 to gather target image with the corresponding line scan rate of triggering signal.External trigger module 6 is regulated the line scan rate of camera 3 according to the movement velocity of installing rack 8, camera 3 can be taken obtain high-quality target image.
In the utility model, the camera 3 preferred CCD cameras that adopt more preferably adopt line sweep CCD camera.Object 9 can be track, also can be other any object that needs detection.Target image can be orbital elements image (as: rail, railway ballast, images such as fastener and sleeper).
When utilizing the tour detection system of the utility model that object 9 is detected, comprise following several steps:
The first step: make an inspection tour detection system and object 9 generation relative motions, make an inspection tour the light source 1 irradiation object 9 of detection system, the image of camera 3 picked-up objects 9, thus obtain target image.Preferably, when carrying out this first step, make an inspection tour the light source adjusting device of detection system and simultaneously the brightness of light source 1 is regulated, process that the light source adjusting device is regulated light source 1 as above step S01 is set forth to step S08, repeats no more at this.More preferably, when carrying out this first step, make an inspection tour the external trigger module 6 of detection system and send triggering signal simultaneously to camera 3, camera 3 is to gather target image with the corresponding line scan rate of triggering signal.
In other execution mode of the utility model; When carrying out the first step; The light source adjusting device can be regulated the brightness of light source 1 simultaneously, and still, external trigger module 6 can not trigger camera 3 simultaneously to gather target image with the corresponding line scan rate of triggering signal.In like manner, when carrying out the first step, external trigger module 6 can trigger camera 3 simultaneously to gather target image with the corresponding line scan rate of triggering signal, and still, the light source adjusting device can not regulated the brightness of light source 1 simultaneously.
Second step: camera 3 sends to the host computer 7 of making an inspection tour detection system with target image, and the image processing system of host computer 7 carries out analyzing and processing to target image, and the output analysis result.
In above-mentioned second step, promptly the image processing system in the host computer 7 in turn includes the following steps to the concrete process that target image carries out analyzing and processing:
The first step, image preliminary treatment: target image is smoothly reached denoising handle, thereby obtain muting target image.
In second step, zone identification: target image all is by rail is regional, sleeper is regional and non-rail zone constitutes.After the various zones of 7 pairs of muting target images of host computer are discerned, with target image be divided into above-mentioned rail zone, sleeper is regional and non-rail zone, and with the input picture of each zone as follow-up defects detection.
In the 3rd step, defects detection: image processing system detects, analyzes input picture, thereby judges, obtains the concrete zone at defective place and the kind of defective.Preferably, there is different defects in the different target area image, uses different algorithms that different area images is detected.To confirm which defective each zone specifically exists.Promptly be: defective is positioned at the rail zone, the sleeper zone also is non-rail zone; Concrete defective is the scratch on rail surface, or crackle.
The 4th step; Defect location: the real-time speed that obtains making an inspection tour the detection system operation according to the tachogenerator 61 of external trigger module 6; Can obtain making an inspection tour the range ability of detection system; The information of range ability is one to one with the sequence number of the target image of being gathered, and according to the corresponding relation of range ability and detected defective, can in motion process, appear at the accurate position on the object 9 by recording defect.
The 5th step, Symptom and classification: from rail zone, sleeper is regional and the corresponding different geometric characteristic of the detected defective in non-rail zone, utilize the different geometric characteristic defective is described and to be classified.Preferably, in the 5th step ground, the defective of the image in different target zone usually shows as various geometric properties.The normal geometric properties that uses has girth, major axis, minor axis and area etc.As: steel rail defect can be with eccentricity, and information such as density and length-width ratio input to the vectorial input of study vector quantization (LVQ) neural net identification.As, tread falls piece according to the identification of LVQ neural net, adopts the key element of area as Symptom; Crackle then returns the key element of length information as Symptom.As: various abrasive characteristics are carried out as much as possible, preferably separate, mutual ind description, so that reflect the characteristics of various defective different aspects, convenient follow-up identification.
The 6th step, report output: the defective of having described in the 5th step and classify is exported as analysis result.Preferably; In the 6th step; The size of the image that different target is regional, the defective locations of every width of cloth image, each defective and grade and relevant information thereof are printed by the form of form and are gathered, and can be output as forms such as Excel form, html web page file or TXT document.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (5)
1. light source adjusting device; It is characterized in that; Comprise the host computer (7) of a receiving target image and the adjuster (2) that is connected with said host computer (7), said light source adjusting device also comprises electric power driving module (4) and the light source (1) that is connected with said electric power driving module (4);
Said accent device (2) comprises a control board (21); Said control board (21) comprises A/D modular converter (211), judge module (213), counting module (215), photoelectricity coupling module (217) and the D/A modular converter (219) that connects successively; Wherein, A/D modular converter (211) is connected with said host computer (7);
Said judge module (213) is provided with the number range in a plurality of zones; Said counting module (215) comprises a plurality of counters; Each said counter is connected with said judge module (213) respectively; And corresponding each the said counter of each said number range, said photoelectricity coupling module (217) comprises a plurality of photoelectrical couplers that are connected with each said counter respectively, each said photoelectrical coupler all connects said D/A modular converter (219);
Said electric power driving module (4) is connected in said D/A modular converter (219), and said electric power driving module (4) is controlled the brightness regulation of said light source (1) according to the signal of said D/A modular converter (219).
2. light source adjusting device according to claim 1 is characterized in that, each the said counter in the said counting module (215) is that to have initial value and set point and said initial value be zero counter.
3. according to any described light source adjusting device in the claim 1 to 2; It is characterized in that; The said host computer (7) of said light source adjusting device is connected with a plurality of cameras (3), and said camera (3) is used to gather said target image and said target image is sent to said host computer (7).
4. light source adjusting device according to claim 3; It is characterized in that; Said host computer (7) connects said camera (3) through image pick-up card (5); Said image pick-up card (5) is used for receiving and storing the said target image that each said camera (3) obtains, and said image pick-up card (5) is used for said target image is sent to said host computer (7).
5. light source adjusting device according to claim 4; It is characterized in that; The said host computer (7) of said light source adjusting device is connected with external trigger module (6); Said external trigger module (6) comprises tachogenerator (61), photoelectric encoder (63) and the synchronous trigger circuit plate (65) that connects in order, and said synchronous trigger circuit plate (65) connects each said camera (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203536614U CN202276507U (en) | 2011-09-20 | 2011-09-20 | Light source adjustment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203536614U CN202276507U (en) | 2011-09-20 | 2011-09-20 | Light source adjustment device |
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| CN202276507U true CN202276507U (en) | 2012-06-13 |
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| CN2011203536614U Expired - Lifetime CN202276507U (en) | 2011-09-20 | 2011-09-20 | Light source adjustment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438356A (en) * | 2011-09-20 | 2012-05-02 | 株洲南车时代电气股份有限公司 | Light source regulating device and method |
-
2011
- 2011-09-20 CN CN2011203536614U patent/CN202276507U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438356A (en) * | 2011-09-20 | 2012-05-02 | 株洲南车时代电气股份有限公司 | Light source regulating device and method |
| CN102438356B (en) * | 2011-09-20 | 2013-11-27 | 株洲时代电子技术有限公司 | Light source regulating device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120613 Effective date of abandoning: 20131127 |
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| RGAV | Abandon patent right to avoid regrant |