CN204044383U - Foreign matter automatic detection device between curve metro platform shield door and train - Google Patents
Foreign matter automatic detection device between curve metro platform shield door and train Download PDFInfo
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- CN204044383U CN204044383U CN201420365635.7U CN201420365635U CN204044383U CN 204044383 U CN204044383 U CN 204044383U CN 201420365635 U CN201420365635 U CN 201420365635U CN 204044383 U CN204044383 U CN 204044383U
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Abstract
The utility model discloses foreign matter automatic detection device between a kind of curve metro platform shield door and train, described device comprises multiple background object of reference, multiple cameras, control treatment equipment and detects output device, and background object of reference is the ribbon article with surrounding environment color contrast distinctness; Gap between curve metro platform shield door and train is divided into multiple surveyed area, background object of reference and video camera are set in each surveyed area, and the camera lens of video camera is towards background object of reference; Detect output device be arranged on be convenient to staff observe position on, every platform video camera and detect output device respectively with control treatment equipment connection.Pick-up unit of the present utility model can obtain the real-time pictures between curve platform shield door and train, and realizes foreign matter and automatically detect, and greatly can improve the efficiency of foreign bodies detection in curve platform situation.
Description
Technical field
The utility model relates to the pick-up unit of foreign matter between a kind of subway platform and train, foreign matter automatic detection device between especially a kind of curve metro platform shield door and train, belongs to foreign material detecting technique field between subway platform and train.
Background technology
Subway is as the important means of transportation of modern city, for platform under preventing large passenger flow situation is crowded accidents caused, most domestic subway station is provided with shield door between platform and tunnel, to have an appointment between shield door and car door during train dwelling 10 centimetres of gaps, if passenger is overcrowding when getting on or off the bus, or have passenger's chongmen when car door is about to close, passenger or belongings then may be caused to be sandwiched in two crack between a door and its frame gaps, how all there is similar accident in subway, the life even compromising passenger had.
In order to remove a hidden danger, ensure the safety and stability of metro operation, must detect foreign matter in gap.In straight line platform situation, the method for foreign bodies detection mainly contains manual detection, infrared light detection and laser detection etc.Wherein infrared detection and laser detecting method can realize automatic detection, but there is the defect that equipment volume is comparatively large, Detection accuracy is not high, and its practical application effect is undesirable.Current employing comparatively generally manual detection, as Guangzhou Underground, adopts the method for driver's tailstock LED in headstock place direct vision port, if light bar is complete, thinks do not have foreign matter, if light bar is interrupted, have foreign matter.Manual detection accuracy rate is secure, but wastes time and energy, and efficiency is lower.According to the working specification that Guangzhou Underground is current, before dispatching a car, the consuming time of artificial foreign bodies detection is about 10 seconds at every turn, and this is great loss for the metro operation department seized every minute and second.The more important thing is, above-mentioned automatic testing method, be difficult to application under the environment frequent in subway platform vibrations, blast is comparatively large, dust is more, and cannot use under platform is curve condition, and according to manual detection, then manpower and time cost will be very high.
In sum, a kind of suitable feasible automatic foreign bodies detection scheme for curve platform is not still had at present.Need to design a set of adaptation metro environment, gap foreign matter automatic detection device between effective curve platform two, intuitively visual to realize inside information condition in gap between curve platform shield door and car door, and reliable foreign matter can be carried out automatically detect, thus cut operating costs, promote efficiency of operation, ensure operation security.
Utility model content
The purpose of this utility model is the defect in order to solve above-mentioned prior art, provides the foreign matter automatic detection device between curve metro platform shield door and train that a kind of structure is simple, easy for installation, detection efficiency is high.
The purpose of this utility model can reach by taking following technical scheme:
Foreign matter automatic detection device between curve metro platform shield door and train, it is characterized in that: comprise multiple background object of reference, multiple cameras, control treatment equipment and detect output device, described background object of reference is the ribbon article with surrounding environment color contrast distinctness; Gap between curve metro platform shield door and train is divided into multiple surveyed area, a background object of reference and at least one video camera are set in described each surveyed area, and the camera lens of video camera is towards background object of reference; Described detection output device be arranged on be convenient to staff observe position on, described every platform video camera and detect output device respectively with control treatment equipment connection.
As a kind of embodiment, using the gap of curve subway platform often being fanned between the shield door Train door corresponding with this shield door as a surveyed area; In described each surveyed area, background object of reference is arranged in gap in planar range residing for platform ground, and length is greater than the width of shield door, and video camera is arranged on the position of shield door crossbeam near train side, and its camera lens is towards earth background object of reference.
As a kind of embodiment, using the gap between curve metro platform shield door and one save or more piece linearly stops railway car as a surveyed area, this surveyed area is a straight-line detection section, and cascade before and after each straight-line detection section covers whole gap scope; In each straight-line detection section, the background object of reference vertical ground section of being arranged on tail position, and be highly greater than shield door height, video camera is by Bracket setting in the first highly suitable position of section, and its camera lens is towards section tail background object of reference.
As a kind of embodiment, described control treatment equipment is the computing machine for carrying out processing Yu identifying to image, described computing machine respectively with every platform video camera, detect output device and be connected, and access train status signal and shield door status signal.
As a kind of embodiment, described computing machine is connected with station parametric controller, obtains train status signal and shield door status signal from station parametric controller.
As a kind of embodiment, described computing machine be arranged on the train detection device of platform, shield door state detector is connected, and obtains train status signal and shield door status signal respectively by train detection device and shield door state detector; Described train detection device is arranged near train stopping position; Described shield door state detector is arranged near curve subway platform fan shield door.
As a kind of embodiment, described detection output device comprises display and audible-visual annunciator.
As a kind of embodiment, described is LED or ribbon marker with the ribbon article of surrounding environment color contrast distinctness.
The utility model has following beneficial effect relative to prior art:
1, pick-up unit of the present utility model can not only realize the full automation of foreign bodies detection in curve platform situation, also can the image of camera acquisition be output on display, so that the driver on train and other subways staff confirm fast, the picture that can directly utilize display to show under emergency case carries out manual detection, greatly can improve efficiency and the reliability of foreign bodies detection in curve platform situation, ensure that the safety of metro operation is with efficient, and provide possibility for following subway train is unmanned.
2, pick-up unit of the present utility model can using the gap of often fanning between the shield door Train door corresponding with this shield door as a surveyed area, often fanning shield door place installation video camera, informative, visual good, foreign matter present position can be located fast and accurately.
3, pick-up unit of the present utility model can using the gap between curve metro platform shield door and the railway car that train one saves or more piece linearly stops as a surveyed area, this surveyed area is a straight-line detection section, cascade before and after each straight-line detection section, not only curve platform " is changed Qu Weizhi ", and the number of cameras needed reduces, cost-saving.
4, pick-up unit Detection accuracy of the present utility model is high, relative to other gap foreign matter Automatic Measurement Technique, video detects the impact of platform vibrations when not being vulnerable to train in/out station, and the utility model device all can detect region-of-interest by self-adaptative adjustment before each train enters the station, further reduction vibrations are with blast to the interference detected, and its Detection accuracy is higher than legacy equipment.
5, pick-up unit of the present utility model is easy to install in subway actual environment, and only need install video camera and data line in gap, and the installation width of video camera all can be controlled within 3 centimetres, requisite space is very little, convenient and flexible installation, does not affect traffic safety.
6, pick-up unit of the present utility model is by obtaining train in/out station and shield door status information, and system was detected in the correct time period, ensure that the effectively correct of testing result and reduces rate of false alarm, improve system accuracy.
7, pick-up unit of the present utility model is after realizing the robotization of curve platform foreign bodies detection, average per tour train can save more than 10 seconds dwell time, calculate with current Guangzhou Underground 100 seconds minimum departure intervals of operation, adopt efficiency of operation after automatically detecting can promote about 10%.
Accompanying drawing explanation
Fig. 1 is foreign matter automatic detection device structural principle block diagram between the curve metro platform shield door of the utility model embodiment 1 and train.
Fig. 2 is the installation site front elevation of video camera and LED in foreign matter automatic detection device between the curve metro platform shield door of the utility model embodiment 1 and train.
Fig. 3 be focus on computing machine between the curve metro platform shield door of the utility model embodiment 1 and train in foreign matter automatic detection device, detect output device, train detection device and shield door state detector and train, position relationship schematic diagram between shield door.
Fig. 4 is foreign matter automatic detection device structural principle block diagram between the curve metro platform shield door of the utility model embodiment 3 and train.
Fig. 5 is the installation site vertical view of video camera and ribbon marker in each surveyed area in foreign matter automatic detection device between the curve metro platform shield door of the utility model embodiment 3 and train.
Fig. 6 is the installation site vertical view of video camera and LED in each surveyed area in foreign matter automatic detection device between the curve metro platform shield door of the utility model embodiment 4 and train.
Wherein, 1-LED light bar, 2-video camera, 3-control treatment equipment, 4-detects output device, 5-shield door, 6-train detection device, 7-shield door state detector, 8-display, 9-audible-visual annunciator, 10-ribbon marker, 11-Train door, 12-station parametric controller.
Embodiment
Embodiment 1:
The background object of reference of the present embodiment adopts LED, and this LED and surrounding environment color contrast distinctness, be described below in conjunction with accompanying drawing:
As shown in FIG. 1 to 3, between the curve metro platform shield door of the present embodiment and train, foreign matter automatic detection device comprises multiple LED 1, multiple cameras 2, control treatment equipment 3 and detects output device 4; Because railway car is rigid straight structure, the car door in same joint compartment must be on the same line, so the straight line that must have in rail cars length runs through gap, utilize this feature, curve metro platform shield door 5 and train are often saved gap between compartment as a surveyed area, this surveyed area is a straight-line detection section, and cascade before and after each straight-line detection section covers whole gap scope; A LED 1 and a video camera 2 are set in each straight-line detection section, the LED 1 vertical ground section of being arranged on tail position, and be highly greater than shield door height, video camera 2 by Bracket setting in the first highly suitable position of section, its camera lens is towards the LED 1 of section tail, and laterally shooting is containing the slot image of LED information; Every platform video camera 2 is connected with control treatment equipment 3 respectively with detection output device 4.
Described control treatment equipment 3 is the computing machine for processing image, this computing machine adopts industrial control computer, be connected with the train detection device 6, the shield door state detector 7 that are arranged on platform, obtain train status signal and shield door status signal respectively by train detection device 6 and shield door state detector 7; Described train detection device 6 adopts ultrasonic distance-measuring sensor, be arranged near train stopping position, the present embodiment is arranged in the gap between curve metro platform shield door and train or train head locates, and towards train, whether stop for detecting train, Cleaning Principle is: when platform not stopping train, and train detection device 6 detects front without object; When train dwelling, train detection device 6 has detected that object exists; Described shield door state detector 7 adopts infrared distance sensor, be arranged near curve subway platform fan shield door, in gap when the present embodiment is arranged on train dwelling between curve metro platform shield door and train, certain fans the side of shield door, be in same plane with this shield door, and towards this shield door, for detecting platform screen door open and-shut mode, Cleaning Principle is: when shield door is in closed condition, and shield door state detector 7 is distant to shield door; When shield door transverse shifting is opened, shield door state detector 7 reduces to shield door distance, thus realizes detecting;
Described control treatment equipment 3 and on detecting when output device 4 is all arranged on train dwelling outside pilothouse platform, wherein the position detected set by output device 4 can make the driver on train and other subways staff conveniently observe; Described detection output device 4 comprises display 8 and audible-visual annunciator 9, and described display 8 is connected with the video interface of computing machine, and audible-visual annunciator 9 is connected with the I/O interface of computing machine.
The principal feature of the present embodiment is: curve platform " is changed Qu Weizhi " by compartment, the corresponding joint compartment of each detection segment, and video camera 2 quantity of needs reduces, cost-saving; The eye-catching distinctness of described LED 1, with reference to effective; And industrial control computer performance is high.
Between the curve metro platform shield door of the present embodiment and train, foreign matter automatic detection device carries out self-adaptative adjustment without during train to the detection region-of-interest in shot by camera picture at platform; When Signal aspects platform has train to stop, and shield door from open become close completely time, system starts to carry out foreign bodies detection, until foreign bodies detection terminates when receiving train signal leaving from station, performs following detecting step during foreign bodies detection:
1), in each surveyed area, included the slot image of LED information by this surveyed area of camera acquisition, image information is transferred to computing machine;
2) realtime graphic of each surveyed area is transferred to the display detected in output device by computing machine, and the picture that can directly utilize display to show under emergency case carries out manual detection; Meanwhile, computing machine to each surveyed area the detection region-of-interest gathered in image process;
3) changing value between the length detecting in present image LED when detecting the length of LED in region-of-interest and do not blocked by foreign matter, if changing value is greater than the threshold value of user's setting, then judges have foreign matter to exist, enters step 4); Otherwise, enter step 5);
4) information after process outputs to and detects in output device by computing machine, the warning messages such as display display foreign matter image, foreign matter position, and audible-visual annunciator shows foreign matter, and sends alarm sound;
5) information after process outputs to and detects in output device by computing machine, and display shows the normal information such as each surveyed area image, and audible-visual annunciator display foreign, does not send alarm sound.
Above-mentioned detection region-of-interest self-adaptative adjustment, specific as follows:
When platform is without train, camera acquisition is carried out pre-service to image by computing machine; LED is searched in image after the pre-treatment; The LED length searched is compared with length empirical value before, if length decreasing value exceedes the threshold value of setting, then send LED disappearance alerting signal, the display display disappearance image of LED and the warning message of position, audible-visual annunciator display system is abnormal, and sends alarm sound; If length is identical with empirical value or variable quantity does not exceed the threshold value of setting, then centered by LED, choose OK range as detection region-of-interest.
Above-mentioned steps 3) what adopt is existing image processing algorithm, is specially: when after the image receiving video camera 2 collection, extract from the image gathered according to the position and size of detecting region-of-interest and detect region-of-interest subgraph; Subimage is carried out low-pass filtering, obtains binaryzation target image; Comprise multiple independently object candidate area in the binaryzation target image obtained, travel through these independently candidate regions, choose the candidate region that length is maximum, this candidate region is required target area; The length maximal value of this target area and the length maximal value of target area when not being blocked are compared, obtains the changing value between them, if changing value is greater than the threshold value of user's setting, then judges have foreign matter to exist, enter step 4); Otherwise, enter step 5).
Embodiment 2:
The principal feature of the present embodiment is: when curve platform curvature is less, and two joints or three joint compartments also can form straight line, now curve metro platform shield door 5 and two can be saved or three save gap between compartment as a straight-line detection section.All the other are with embodiment 1.
Embodiment 3:
The background object of reference of the present embodiment adopts ribbon marker, and this ribbon marker can be PVC material, adhesive tape, rubber strip etc., and it is bright in luster, distinct with surrounding environment color contrast, is described below in conjunction with accompanying drawing:
As shown in Figure 4 and Figure 5, between the curve metro platform shield door of the present embodiment and train, foreign matter automatic detection device comprises multiple ribbon marker 10, multiple cameras 2, control treatment equipment 3 and detects output device 4; Curve subway platform is often fanned gap between shield door 5 Train door corresponding with this shield door 5 11 as a surveyed area; A ribbon marker 10 and a video camera 2 are set in described each surveyed area, wherein ribbon marker 10 to be arranged in gap on platform ground, and length is greater than the width both sides 30cm of shield door 5, video camera 2 is arranged on the position of shield door 5 crossbeam near train side, its camera lens, towards the ribbon marker 10 on ground, takes a crane shot containing the slot image of ribbon marker 10 information;
Described control treatment equipment 3 is the computing machine for processing image, and this computing machine adopts industrial control computer, is connected with station parametric controller 12; Described station parametric controller 12 is generally positioned at pulpit, station or equipment room, can obtain train status information and shield door status information in real time, after being connected with computing machine, train status signal and shield door status signal is fed back to computing machine; After computing machine obtains train status signal and shield door status signal from station parametric controller 12, judge according to signal, when Signal aspects platform has train to stop, and shield door from open become close completely time, system starts to carry out foreign bodies detection, Cleaning Principle is similar with embodiment 1, just the slot image will become containing ribbon marker information containing the slot image of LED information of camera acquisition.
The principal feature of the present embodiment is: described ribbon marker 10 and video camera 2 volume little, easy for installation; The installation width of described every platform video camera 2 all can be controlled within 3cm, and requisite space is very little, does not affect traffic safety, and it is arranged on often fans shield door 5 place, and obtaining information enriches, and Foreign bodies is accurate; And control treatment equipment 3 directly obtains train status signal and shield door status signal from station parametric controller 12, reduces cost.
Embodiment 4:
As shown in Figure 6, between the curve metro platform shield door of the present embodiment and train, the difference part of foreign matter automatic detection device and embodiment 3 is: described ribbon marker 10 changes into and adopts LED 1, when mounted, first to slot on the ground, LED 1 is placed in groove, then carry out wiring, re-lay the glass plate of layer of transparent; In the present embodiment, comparatively ribbon marker 10 is complicated in the installation of LED 1, but Detection results is good.
In sum, between curve metro platform shield door of the present utility model and train, foreign matter automatic detection device has quite high feasibility, and greatly can improve the efficiency of foreign bodies detection between curve platform and train, ensures that the safety of metro operation is with efficient.
The above, be only the utility model patent preferred embodiment, but the protection domain of the utility model patent is not limited thereto, if train detection device in embodiment 1 and 2 can be infrared distance sensor, and shield door state detector also can be ultrasonic distance-measuring sensor, also can be arranged on other positions being convenient to staff's observation as detected output device, as in embodiment 3, ribbon marker can be arranged in the gap of platform and train, other places such as equipment room can also be arranged on as embodiment 1 ~ 4 Computer, anyly be familiar with those skilled in the art in the scope disclosed in the utility model patent, be equal to according to the technical scheme of the utility model patent and utility model design thereof and replaced or change, all belong to the protection domain of the utility model patent.
Claims (8)
1. foreign matter automatic detection device between curve metro platform shield door and train, it is characterized in that: comprise multiple background object of reference, multiple cameras, control treatment equipment and detect output device, described background object of reference is the ribbon article with surrounding environment color contrast distinctness; Gap between curve metro platform shield door and train is divided into multiple surveyed area, a background object of reference and at least one video camera are set in described each surveyed area, and the camera lens of video camera is towards background object of reference; Described detection output device be arranged on be convenient to staff observe position on, described every platform video camera and detect output device respectively with control treatment equipment connection.
2. foreign matter automatic detection device between curve metro platform shield door according to claim 1 and train, is characterized in that: using the gap of curve subway platform often being fanned between the shield door Train door corresponding with this shield door as a surveyed area; In described each surveyed area, background object of reference is arranged in gap in planar range residing for platform ground, and length is greater than the width of shield door, and video camera is arranged on the position of shield door crossbeam near train side, and its camera lens is towards earth background object of reference.
3. foreign matter automatic detection device between curve metro platform shield door according to claim 1 and train, it is characterized in that: using the gap between curve metro platform shield door and one save or more piece linearly stops railway car as a surveyed area, this surveyed area is a straight-line detection section, cascade before and after each straight-line detection section, covers whole gap scope; In each straight-line detection section, the background object of reference vertical ground section of being arranged on tail position, and be highly greater than shield door height, video camera is by Bracket setting in the first highly suitable position of section, and its camera lens is towards section tail background object of reference.
4. foreign matter automatic detection device between curve metro platform shield door according to claim 1 and train, it is characterized in that: described control treatment equipment is the computing machine for carrying out processing Yu identifying to image, described computing machine respectively with every platform video camera, detect output device and be connected, and access train status signal and shield door status signal.
5. foreign matter automatic detection device between curve metro platform shield door according to claim 4 and train, is characterized in that: described computing machine is connected with station parametric controller, obtains train status signal and shield door status signal from station parametric controller.
6. foreign matter automatic detection device between curve metro platform shield door according to claim 4 and train, it is characterized in that: described computing machine be arranged on the train detection device of platform, shield door state detector is connected, and obtains train status signal and shield door status signal respectively by train detection device and shield door state detector; Described train detection device is arranged near train stopping position; Described shield door state detector is arranged near curve subway platform fan shield door.
7. foreign matter automatic detection device between curve metro platform shield door according to claim 1 and train, is characterized in that: described detection output device comprises display and audible-visual annunciator.
8. foreign matter automatic detection device between curve metro platform shield door according to claim 1 and train, is characterized in that: described is LED or ribbon marker with the ribbon article of surrounding environment color contrast distinctness.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365635.7U CN204044383U (en) | 2014-07-02 | 2014-07-02 | Foreign matter automatic detection device between curve metro platform shield door and train |
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| CN201420365635.7U CN204044383U (en) | 2014-07-02 | 2014-07-02 | Foreign matter automatic detection device between curve metro platform shield door and train |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049281A (en) * | 2014-07-02 | 2014-09-17 | 广州市地下铁道总公司 | Device and method for automatically detecting foreign matter between screen door of curve subway platform and train |
| CN106251347A (en) * | 2016-07-27 | 2016-12-21 | 广东工业大学 | subway foreign matter detecting method, device, equipment and subway shield door system |
| CN110670994A (en) * | 2019-09-11 | 2020-01-10 | 天津市英贝特航天科技有限公司 | Subway door anti-pinch detection circuit based on CDC chip |
| CN110944134A (en) * | 2018-09-25 | 2020-03-31 | 武汉云象智能科技有限公司 | System for detecting barrier between subway shield door and train door based on computer vision |
| CN112288717A (en) * | 2020-10-29 | 2021-01-29 | 哈尔滨市科佳通用机电股份有限公司 | Method for detecting foreign matters on side part of motor train unit train |
-
2014
- 2014-07-02 CN CN201420365635.7U patent/CN204044383U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049281A (en) * | 2014-07-02 | 2014-09-17 | 广州市地下铁道总公司 | Device and method for automatically detecting foreign matter between screen door of curve subway platform and train |
| CN104049281B (en) * | 2014-07-02 | 2017-07-07 | 广州市地下铁道总公司 | Foreign matter automatic detection device and method between curve metro platform shield door and train |
| CN106251347A (en) * | 2016-07-27 | 2016-12-21 | 广东工业大学 | subway foreign matter detecting method, device, equipment and subway shield door system |
| CN106251347B (en) * | 2016-07-27 | 2019-07-16 | 广东工业大学 | Subway foreign matter detecting method, device, equipment and subway shield door system |
| CN110944134A (en) * | 2018-09-25 | 2020-03-31 | 武汉云象智能科技有限公司 | System for detecting barrier between subway shield door and train door based on computer vision |
| CN110670994A (en) * | 2019-09-11 | 2020-01-10 | 天津市英贝特航天科技有限公司 | Subway door anti-pinch detection circuit based on CDC chip |
| CN112288717A (en) * | 2020-10-29 | 2021-01-29 | 哈尔滨市科佳通用机电股份有限公司 | Method for detecting foreign matters on side part of motor train unit train |
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Granted publication date: 20141224 Termination date: 20180702 |