CN110103993B - Platform door laser anti-pinch system of track traffic curve platform and control method thereof - Google Patents
Platform door laser anti-pinch system of track traffic curve platform and control method thereof Download PDFInfo
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- CN110103993B CN110103993B CN201910390646.8A CN201910390646A CN110103993B CN 110103993 B CN110103993 B CN 110103993B CN 201910390646 A CN201910390646 A CN 201910390646A CN 110103993 B CN110103993 B CN 110103993B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B1/00—General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
- B61B1/02—General arrangement of stations and platforms including protection devices for the passengers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The invention discloses a platform door laser anti-pinch system of a track traffic curve platform and a control method thereof, which belong to the technical field of platform door safety detection. The laser anti-pinch system disclosed by the invention has the advantages of simple structure, simplicity and convenience in control, high accuracy in adjustment and control, high detection accuracy, small error, no invasion of train limit during train operation, capability of fully ensuring the stability of train operation, reduction of damage of the anti-pinch system to a train body, further ensuring the safety of station operation, and better application prospect and popularization value.
Description
Technical Field
The invention belongs to the technical field of platform door safety detection, and particularly relates to a platform door laser anti-pinch system of a track traffic curve platform and a control method thereof.
Background
With the continuous acceleration of the urban process, the application of rail transit is becoming more and more common. Compared with other urban traffic systems, the system has the advantages that the traffic volume of the rail traffic is large, the quasi-point rate is high, the travel of people can be greatly facilitated, the rail traffic does not occupy the road surface traffic space of automobiles and buses, and the system has a remarkable effect on improving urban congestion.
In the operation of rail traffic, a platform door system is generally provided on a platform thereof for distinguishing the platform from a track and enabling passengers to get on and off the vehicle. Because of considering the train limit in the running process of the train, the arrangement of the platform door system often needs to meet the requirement that a certain distance is reserved between the platform door system and the stopped train, so that a certain width gap exists between the platform door system and the stopped train, and a certain potential safety hazard exists in the running process of the platform door system. In recent years, it has been common for rail traffic passengers to be trapped between a closed platform door and a train door, and such an accident is particularly likely to occur when the platform door and the train door are about to be closed, the passengers still want to forcefully get on or get off the train, or when the passengers get on or off the train.
Obviously, in order to improve the safety of rail traffic operation, passengers are required to improve the safety awareness and take a bus safely; secondly, related improvement is needed to be carried out on the existing rail transit station so as to improve the running safety of the station. Therefore, more operation departments add anti-pinch safety measures on the rail transit platform, so that the anti-pinch safety measures are used for anti-pinch detection in the use process of the platform door, the existing anti-pinch safety measures are generally correlation laser detection systems corresponding to the station, and the safety of the operation of the platform door system is ensured by respectively arranging a laser transmitter and a terminal receiver at two ends of the station, transmitting laser signals to the terminal receiver by the laser transmitter, converting received modulated optical signals into corresponding electric signals by the receiver, and sending alarm signals to a control host when light beams are interrupted. The system can improve the safety of platform operation to a certain extent, and reduce the occurrence of the condition that passengers are clamped in front of platform doors and a vehicle body. However, due to the straightness of laser, the existing laser detection system is often suitable for a linear platform, and for a curved platform, due to the existence of a platform corner, the existing laser detection system cannot be effectively suitable, and the curved platform can be divided into a plurality of short linear platforms only by adding a plurality of pairs of laser transmitters and terminal receivers, so that the anti-pinch detection of the platform door is realized, the control difficulty of the laser detection system is increased, the input cost of equipment is greatly increased, the fault probability of the equipment is correspondingly increased, and the use and maintenance cost of the laser detection system is greatly increased; meanwhile, the existing laser detection system often needs to invade the limit of the train, has a certain influence on the setting stability of the detection system and the running safety of the train, and the volume of the laser correlation device is often larger, so that the setting difficulty is increased and the problem of invasion of the limit of the train is aggravated due to the increase of the setting quantity of the laser correlation device; in addition, the existing laser correlation device is often arranged at two ends of the platform door, because the platform door is a movable part, vibration in the working process can enable laser correlation precision to be affected to a certain extent, the laser correlation device is more obvious on a curve platform, and further the detection result is misaligned, the condition of missing detection and misreporting occurs, the maintenance and repair cost is increased, the safe operation of a station is affected, and the operation cost of the station is increased. In view of this, the existing laser detection system cannot be effectively applied to the curve platform, and has a large application limitation.
Disclosure of Invention
Aiming at one or more of the defects or improvement demands in the prior art, the invention provides a platform door laser anti-clamping system of a track traffic curve platform and a control method thereof, wherein a laser emitting component, a laser receiving component and a laser refracting component are arranged on the curve platform corresponding to the platform door, so that the invasion of the laser emitting component and the laser receiving component to a train limit can be effectively avoided, the anti-clamping detection between the platform door and a train body can be accurately completed, the detection accuracy is high, the error is small, and the operation safety of the curve platform is improved.
In order to achieve the above object, according to one aspect of the present invention, there is provided a platform door laser anti-pinch system for a curved platform of rail transit, which is characterized by comprising a laser emitting assembly and a laser receiving assembly respectively disposed at two ends of the curved platform, and a plurality of laser refracting assemblies correspondingly disposed on the platform door; wherein,
the laser emitting assembly is fixedly arranged on the station board, does not invade the limit of the train, and comprises at least one laser emitter capable of emitting laser along the horizontal direction;
the laser receiving assembly is arranged corresponding to the laser emitting assembly, does not invade the limit of the train, comprises at least one laser receiver, and can emit all laser beams emitted by the laser emitting assembly to the laser receiving assembly after being correspondingly refracted by each laser refracting assembly, and can receive all the laser beams when the platform door is not blocked with the train;
the platform doors of the curve platform are formed by correspondingly splicing at least two platform door straight-line sections, the included angle between every two adjacent platform door straight-line sections is not equal to 180 degrees, and the laser refraction assemblies are respectively arranged at the two ends of the platform doors and at the joint of the two adjacent platform door straight-line sections;
the laser refraction assembly comprises a laser refraction unit and a driving assembly arranged corresponding to the laser refraction unit, the driving assembly is fixedly arranged on one side, opposite to the track area, of the platform door, the setting height of the driving assembly corresponds to the setting height of the laser transmitter, laser emitted by the laser transmitter can be horizontally transmitted to the laser refraction unit adjacent to the laser transmitter, the driving assembly can drive the laser refraction unit to move, and the laser refraction unit can extend into the train limit when working and is far away from the train limit when not working; and then the laser beam is sequentially transmitted among the laser emission component, the laser refraction components and the laser receiving component, so that the laser anti-pinch detection of the curve platform can be realized.
As a further improvement of the invention, the number of the platform door straight line segments is two, namely a first straight line segment and a second straight line segment, and the number of the laser refraction components is three.
As a further improvement of the invention, the driving assembly comprises a deflection steering engine, a swing arm and an adjustment steering engine;
the deflection steering engine is fixedly arranged on the platform door, and a deflection output shaft of the deflection steering engine is vertically arranged; the swing arm is the shaft-like that the level set up, its one end fixed connection deflection output shaft, just the adjustment steering wheel is fixed to be set up on the other end of swing arm, and make the adjustment output shaft of adjustment steering wheel sets up along vertical, then laser refraction unit with the coaxial setting of adjustment output shaft, and with its one end fixed connection adjustment output shaft.
As a further improvement of the invention, a receiving groove is provided on the platform door corresponding to the laser refraction assembly, for receiving the laser refraction unit after being deflected away from the train limit.
As a further improvement of the invention, the plurality of laser transmitters are sequentially arranged along the vertical direction, and the plurality of laser transmitters are sequentially fixed on the first upright post arranged along the vertical direction, so that the laser beams emitted by all the laser transmitters are positioned in the same vertical plane.
As a further improvement of the invention, the laser receivers are respectively arranged corresponding to the laser transmitters, and the laser receivers are sequentially arranged along the vertical direction and are sequentially fixed on the second upright post arranged along the vertical direction.
As a further improvement of the invention, the laser refraction unit is a triangular prism arranged along the vertical direction.
As a further development of the invention, the laser transmitter assembly and/or the laser receiver assembly are flush in the longitudinal direction with the corresponding straight section of the platform door.
In another aspect of the invention, a control method of a platform door laser anti-pinch system of a track traffic curve platform is provided, which comprises the following steps:
s1: after the train enters the station and stops stably, each laser refraction component receives a control signal respectively and moves towards the track area of the curve platform under the drive of the corresponding driving component until each laser refraction unit extends into the train limit and stops at a position to be operated respectively;
s2: at least one laser transmitter and at least one laser receiver start to work, the working laser transmitter transmits laser to the adjacent laser refraction units, and the laser is refracted by each laser refraction unit and then is emitted to the corresponding laser receiver;
s3: before the train is about to come out of the station, comparing the number of laser received by the laser receiving assembly with the number of working laser transmitters, feeding back corresponding signals according to comparison results, and feeding back normal signals if the comparison results are equal, wherein the station door is closed at the moment, and the train is ready to come out of the station; if the comparison results are not equal, an abnormal signal is fed back, at the moment, the platform door is closed in a suspending mode, and the train stops going out of the station until a normal signal is fed back;
s4: the feedback signal is displayed as normal, the platform door is closed, and the train is started; simultaneously, the laser emission component and the laser receiving component respectively stop working, and each laser refraction unit is respectively driven by a corresponding driving component to move in a direction deviating from the track area and away from the train limit;
s5: and stopping working after the laser refraction assemblies are restored to the initial state, and waiting for the next train to enter.
The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
(1) The platform door laser anti-pinch system of the track traffic curve platform comprises a plurality of laser refraction assemblies which can extend into a train limit in a working state and keep away from the train limit in an unoperated state, wherein each laser refraction assembly refracts and deflects laser beams emitted by the laser emission assembly into the train limit onto the laser receiving assembly in sequence, and then compares the quantity of the received laser beams with the quantity of the emitted laser beams through the laser receiving assembly to judge whether people or objects are clamped in the train limit, so that anti-pinch detection of the platform door on the curve platform is effectively realized, a large number of the laser emission assemblies and the laser receiving assemblies are avoided, and the setting cost of the laser anti-pinch system on the curve platform is reduced;
(2) According to the platform door laser anti-pinch system of the rail transit curve platform, the laser emission component and the laser receiving component are far away from the train limit, the laser refraction component stretches into the train limit after the train is stopped and is far away from the train limit during the running of the train, so that scratch and damage to a train body after the laser anti-pinch system invades the train limit are effectively avoided while the anti-pinch detection accuracy is ensured, the running safety of the train and the setting stability of the laser anti-pinch system are ensured, and the service life of the laser anti-pinch system is prolonged;
(3) According to the platform door laser anti-pinch system of the rail transit curve platform, the plurality of laser refraction assemblies are arranged on one side, opposite to the rail running area, of the platform door, the driving assemblies are arranged in the laser refraction assemblies corresponding to the laser refraction units, the driving assemblies correspondingly drive the laser refraction units to extend into or far away from the train limit, anti-pinch detection of the platform door under the condition that the laser emission assemblies and the laser receiving assemblies do not invade the train limit is effectively realized, the setting cost of the laser refraction units is low, the control precision is high, and the setting economy and the detection accuracy of the laser anti-pinch system can be fully improved;
(4) The control method of the platform door laser anti-pinch system of the track traffic curve platform has the advantages that the steps are simple, the control is simple and convenient, the invasion of the laser anti-pinch system to the train limit during the running of the train can be effectively avoided, no people or objects exist between the train body and the platform door before the train goes out of the platform, and the running safety of the platform is fully ensured;
(5) The laser anti-pinch system for the platform door of the track traffic curve platform has the advantages of simple structure, simple and convenient control, high accuracy of adjustment and control, high accuracy of detection and small error, can effectively realize anti-pinch detection between the platform door and the train body on the curve platform, can not invade a train limit when the laser anti-pinch system runs on a train, can fully ensure the stability of the train running, reduces the damage of the anti-pinch system to the train body, further ensures the safety of the station running, and has good application prospect and popularization value.
Drawings
FIG. 1 is a schematic view showing the structure of a laser anti-pinch system on a first curved platform according to an embodiment of the present invention;
FIG. 2 is a top view of the structural arrangement of the laser anti-pinch system on the first curved platform in an embodiment of the present invention;
FIG. 3 is a top view of a structural arrangement of a laser anti-pinch system on a second curved platform in an embodiment of the invention;
FIG. 4 is a schematic diagram of a laser emitting assembly of a laser anti-pinch system in an embodiment of the invention;
FIG. 5 is a schematic diagram of a laser receiving assembly of a laser anti-pinch system according to an embodiment of the present invention;
FIG. 6 is a schematic view of a laser refraction assembly on a side of a laser emitting assembly according to an embodiment of the invention;
FIG. 7 is a schematic view showing the arrangement of a laser refraction assembly on a side close to a laser receiving assembly according to an embodiment of the present invention;
like reference numerals denote like technical features throughout the drawings, in particular: 1. the laser emission component, 101, a laser emitter, 102, a first support rod; 2. the laser receiving assembly 201, the laser receiver 202, the second supporting rod; 3. station board, 4, station door component, 401, end door, 402, first straight line segment, 403, second straight line segment, 404, accommodation groove; 5. laser refraction subassembly, 501 laser refraction unit, 502 deflection steering wheel, 503 adjustment steering wheel, 504 swing arm.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The laser anti-pinch system in the preferred embodiment of the invention is arranged on a curved platform as shown in fig. 1, wherein the curved platform comprises a platform plate 3 and a platform door assembly 4, the platform plate 3 is the curved platform plate, the side wall of one side close to a track area is bent at a certain angle at the middle part, when the platform door assembly 4 is arranged, besides end doors 401 which are respectively arranged at two ends of the platform plate 3, a first straight line section 402 and a second straight line section 403 which are mutually at a certain angle are correspondingly arranged between the two end doors 401, and the included angle between the two end surfaces of the two platform doors at one side of the track area is taken as the included angle between the two platform doors, obviously, in the curved platform, the included angle between the two platform doors is not equal to 180 degrees, and in the normal condition, the included angle between the two platform doors is often between 180 degrees and 240 degrees in consideration of the difficulty of turning a train. It will be apparent that the track area of the train in a curved platform may be as shown in figures 1 and 2 or in figure 3, and that the angle between the two platform doors in the curved platform shown in figure 3 is less than 180 deg., typically 120 deg. to 180 deg.. Under the two train rail running modes, the arrangement modes of all the components in the laser anti-clamping system can be the same, and the main difference is the difference of the refraction modes of the laser refraction assemblies 5 at the joints of the platform doors.
In the preferred embodiment of the present invention, the rail form as shown in fig. 1 and 2 is taken as an example, wherein the platform board 3 can be regarded as formed by correspondingly splicing two platform board units with certain included angles, two ends of the platform board 3 are respectively provided with an end door 401, and the end doors 401 are preferably arranged along the transverse direction, namely perpendicular to the positive line direction (longitudinal direction); correspondingly, a first straight line section 402 and a second straight line section 403 are provided on the two platform units, respectively, which are connected correspondingly at the middle corners of the platform 3 and with the ends to the corresponding end doors 401, thus forming the platform door assembly 4 as in fig. 1 and 2. It is obvious that the positive line direction of the curved platform is not straight in the preferred embodiment either, i.e. the longitudinal/positive line directions on both sides of the intersection of the two platform doors are at an angle to each other, whereas in the preferred embodiment the first straight line section 402 and the second straight line section 403 are each preferably arranged along their respective positive line directions.
Further, the two ends of the platform plate 3 are correspondingly provided with the laser emitting component 1 and the laser receiving component 2, and the two components are fixedly arranged on the platform plate 3 so as to avoid or reduce the influence of vibration in the working process of the platform door component 4 on the working precision of the two components; further, the laser emitting assembly 1 and the laser receiving assembly 2 are remote from the train boundary and are further preferably longitudinally flush with the corresponding platform doors or are disposed on the side of the corresponding platform doors facing away from the track area.
Specifically, in the preferred embodiment, the laser emitting component 1 is disposed corresponding to the first straight line segment 402, the laser receiving component 2 is disposed corresponding to the second straight line segment 403, and the laser emitting component 1 is disposed on the platform board 3 on the side of the first straight line segment 402 facing away from the second straight line segment 403, and correspondingly, the laser receiving component 2 is disposed on the platform board 3 on the side of the second straight line segment 403 facing away from the first straight line segment 402; further, the laser emitting component 1 and the laser receiving component 2 are respectively far away from the train limit, and the distance between the laser emitting component 1 and the train limit is not smaller than the distance between the first straight line segment 402 and the train limit, and the distance between the laser receiving component 2 and the train limit is not smaller than the distance between the second straight line segment 403 and the train limit; it is further preferred that the laser emitting assembly 1 is longitudinally flush with the first straight line segment 402 and/or that the laser receiving assembly 2 is longitudinally flush with the second straight line segment 403.
Further, the laser emitting assembly 1 in the preferred embodiment, as shown in fig. 4, includes at least one laser emitter 101 and a first support bar 102 disposed vertically, the bottom of the first support bar 102 is fixed on the top surface of the standing board 3, and the laser emitter 101 is fixedly disposed on the first support bar 102; typically, the laser transmitters 101 are vertically spaced apart, the plurality of laser transmitters 101 are vertically aligned, and the laser beams emitted by the laser transmitters 101 are all in the same vertical plane. For example, in the preferred embodiment, the laser emitters 101 are vertically spaced two, as shown in FIG. 4.
Further, the laser light receiving assembly 2 in the preferred embodiment is shown in fig. 5, and includes at least one laser light receiver 201, and the laser light receivers 201 in the preferred embodiment are arranged in a one-to-one correspondence with the laser light emitters 101, that is, the number of the laser light receivers 201 is equal to the number of the laser light emitters 101. For example, in the preferred embodiment, the laser receivers 201 are arranged in two vertically spaced positions, as shown in fig. 5, and then each laser receiver 201 correspondingly receives a laser beam to determine that no person or object exists between the platform door and the train body, or that no person or object is clamped between the platform door and the train body; of course, the laser receiver 201 may also be configured to receive all the laser beams simultaneously, and detect the presence of a person or object between the platform door and the train body by determining whether the number of received laser beams is equal to the number of laser beams emitted.
Further, since the laser transmitter assembly 1 and the laser receiver assembly 2 do not extend into the train boundary, three sets of laser refraction assemblies 5 extending into the train boundary are provided corresponding to two assemblies in the preferred embodiment, as shown in fig. 1 and 2. The three groups of laser refraction assemblies 5 are respectively arranged at the end part of the first straight line segment 402, which is close to the laser emission assembly 1, the position where the first straight line segment 402 is connected with the second straight line segment 403, and the end part of the second straight line segment 403, which is close to the laser receiving assembly 2, so as to be convenient for distinguishing, the first refraction unit, the second refraction unit and the third refraction unit are respectively used for indicating, then, the laser beam from the laser emission assembly 1 can be correspondingly emitted to the first refraction unit, the first refraction unit refracts the laser beam once, the refracted laser beam longitudinally irradiates the second refraction unit, the second refraction unit refracts the laser beam twice, the refracted laser beam correspondingly irradiates the third refraction unit, and finally, the third refraction unit refracts the laser beam for three times, and the refracted laser beam correspondingly irradiates the laser receiving assembly 2, so that the pinch-proof detection of the platform door is realized.
Specifically, the laser refraction assembly 5 in the preferred embodiment includes a laser refraction unit 501, and the laser refraction unit 501 may be further a vertically disposed triangular prism in the preferred embodiment; further, the laser refraction unit 501 in the preferred embodiment may extend into the train boundary during operation and away from the train boundary during non-operation, i.e., the laser refraction unit 501 is movably disposed on the platform door.
In a preferred embodiment, as shown in fig. 6 and 7, the laser refraction assembly 5 is further shown in fig. 6 and 7, where the laser refraction assembly 5 further includes a deflection steering engine 502 disposed on the platform door, a deflection output shaft of the deflection steering engine 502 is disposed vertically, and an axis horizontal swing arm 504 is disposed corresponding to the deflection output shaft, one end of the swing arm 504 is fixedly connected with the deflection output shaft, an adjustment steering engine 503 is fixedly disposed on the other end of the swing arm 504, an adjustment output shaft of the adjustment steering engine 503 is disposed vertically, and one end of the laser refraction unit 501 is coaxially connected with the adjustment output shaft, and then the adjustment output shaft can drive the laser refraction unit 501 to rotate around the shaft, so as to implement adjustment of the laser refraction angle by the laser refraction unit 501. Further, the length of the swing arm 504 in the preferred embodiment is such that when the axis of the swing arm 504 is perpendicular to the positive line, the end of the swing arm 504 facing away from the steering engine 502 will extend into the train boundary and be spaced a distance from the train body.
Further, in the preferred embodiment, a groove is formed at a corresponding position of the protective door corresponding to the laser refraction component 5 for correspondingly accommodating the deflection steering engine 502, and preferably, a accommodating groove 404 is formed corresponding to the laser refraction unit 501, so that the laser refraction unit 501 can be correspondingly deflected and accommodated in the accommodating groove 404, and obviously, the accommodating groove 404 can correspondingly accommodate the adjustment steering engine 503 and the swing arm 504, as shown in fig. 6 and 7. By the arrangement, when the train is running, no device or structure invades in the train limit, and whether people or objects are clamped in the train limit or not can be fully detected during laser detection, so that the running safety of the train is ensured.
After the platform door laser anti-pinch system in the preferred embodiment of the invention is set, each laser refraction unit 5 needs to be debugged and calibrated, in the debugging process, each deflection steering engine 502 deflects the corresponding swing arm 504 to the direction vertical to the positive line, the laser emission component 1 is started to generate at least one beam of laser to irradiate on the first refraction unit, then the corresponding adjustment steering engine 503 is adjusted, so that after the laser beam is refracted by the three laser refraction units 501, the laser beam can be correspondingly received by the laser receiving component 2, after the debugging is finished, the adjustment steering engine 503 is locked, the deflection steering engine 502 records the angle deflected from the limit of the train to the initial position, and the angle is used as the working deflection angle of each laser refraction unit 501, so that each deflection of the laser refraction unit 501 is ensured to be identical to the calibration, and the accurate refraction of the laser is realized. Of course, after the long-time reciprocating swing, the refractive angle of each laser refraction unit 501 may slightly change, so the laser anti-pinch system can be calibrated at the station air window time, and the calibration process can be performed according to the above steps.
Further, in the preferred embodiment of the present invention, the laser anti-pinch system for platform doors of the track traffic curve platform can be preferably controlled by referring to the following steps when in practical application:
s1: before the train enters the station, the laser emission component 1, the laser receiving component 2 and each laser refraction component 5 are respectively in an unoperated state, and each laser refraction unit 501 does not invade the limit of the train;
s2: after the train enters the station and stops stably, the sliding door corresponding to the train door starts working, and passengers start to get on and off the train; simultaneously, the laser emission component 1, the laser receiving component 2 and the laser refraction components 5 respectively receive control signals to start working, and the laser refraction units 501 are respectively driven by the corresponding deflection steering engines 502 and deflect into the train limit;
s3: the laser transmitting component 1 and the laser receiving component 2 start to work, and each laser transmitter 101 generates a laser beam and sequentially refracts and transmits the laser beam to the laser receiver 201 by each laser refracting unit 501;
s4: before the train is about to come out of the station, the platform door of the station starts to be slowly closed, at the moment, a laser receiving assembly 2 correspondingly feeds back signals to the train and/or a station control room, and further, whether the platform door needs to be closed in an emergency stop or not is judged according to the signals fed back by the laser receiving assembly 2, and whether the train can be started from the station or not is judged;
specifically, when the number of the laser beams received by the laser receiving component 2 is equal to the number of the laser beams emitted by the laser emitting component 1, it indicates that no person or object is clamped between the platform door component and the train body, at the moment, a normal signal is fed back, the platform door can be correspondingly closed, and the train can be discharged after the platform door is closed; when the number of the laser beams received by the laser receiving component 2 is unequal to the number of the laser beams emitted by the laser emitting component 1, the fact that a person or object obstruction exists between the platform door component and the train body is indicated, an abnormal signal is fed back, the platform door is closed temporarily, and the train stops going out.
If the laser receiving component 2 cannot completely receive the laser beams, before feeding back the abnormal signal, the position of each laser refraction unit 501 can be finely adjusted through each adjusting steering engine 503, and if the laser receiving component 2 can receive the laser beams with the same number as the laser beams sent by the laser transmitter 101 after fine adjustment, the normal signal is fed back, and the laser anti-clamping system is calibrated in the next station window period; if the laser receiving component 2 still cannot receive the laser beam after fine adjustment, an abnormal signal is fed back, the platform door is closed temporarily, and the train stops going out.
S5: when the signal fed back is a "normal" signal (i.e. it is ensured that no person or thing is clamped between the platform door and the train body) and the train is ready to go out, the train starts to start while the platform door is closed, and each laser refraction unit 501 is controlled by a corresponding deflection steering engine 502, respectively, and then each laser refraction unit 501 deflects away from the train boundary and finally resumes the initial state.
Further, the laser anti-pinch system may start to operate immediately after the train is stopped, or may start to operate within a certain time before the platform door is ready to be closed, and at the same time, after each laser refraction unit 501 deflects and extends into the boundary of the train, the laser transmitter 101 may start to operate immediately, or may start to transmit the laser beam when the platform door is ready to be closed. In a word, the working time interval of the laser anti-pinch system can be adjusted according to actual needs, and the adjustment space is large and the flexibility is high. It is obvious that if the curve platform is not of a two-stage structure, the laser anti-pinch system of the invention can still be applied, and only the number of the laser refraction assemblies 5 is correspondingly increased.
The invention relates to a platform door laser anti-pinch system arranged corresponding to a track traffic curve platform, which is characterized in that a laser emitting component and a laser receiving component are respectively arranged on platform boards at two ends of the curve platform, the laser emitting component and the laser receiving component do not invade a train limit, a plurality of laser refraction components which can extend into the train limit in a working state and are far away from the train limit in an unoperated state are correspondingly arranged on the platform door component, laser beams emitted into the train limit by the laser refraction components are sequentially refracted and deflected onto the laser receiving component, and then the quantity of the received laser beams is compared with the quantity of the emitted laser beams by the laser receiving component, so as to judge whether people or objects are clamped in the train limit, thereby realizing anti-pinch detection of the platform door.
The platform door laser anti-pinch system is simple in structure, simple and convenient to control, high in accuracy of adjustment and control, capable of effectively preventing the laser emission component and the laser receiving component from invading the train limit, preventing the laser anti-pinch system from invading the train limit and possibly scratching and damaging the train body, ensuring the running safety of the train and the setting stability of the laser anti-pinch system, and prolonging the service life of the laser anti-pinch system; meanwhile, through the arrangement of the plurality of laser refraction assemblies, the transmission and the reception of laser beams are effectively realized, the anti-pinch detection between the platform door of the curve platform and the train body is accurately completed, a large number of laser emission assemblies and laser receiving assemblies are avoided, the setting cost of a laser anti-pinch system is saved, and the control process of the laser anti-pinch detection is simplified; in addition, the corresponding setting of laser refraction subassembly has not only effectively realized the accurate transmission of laser in the curve platform train boundary, can also avoid laser refraction subassembly to the invasion of train boundary when the train operation through the corresponding deflection of laser refraction subassembly, fully guarantees the security and the stability of station operation. In a word, through the setting of above-mentioned laser anti-pinch system, can accurately realize the laser anti-pinch detection of curve platform, ensure the stable, the safe operation of track traffic station, have better application prospect and spreading value.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The platform door laser anti-pinch system of the track traffic curve platform is characterized by comprising a laser emitting component and a laser receiving component which are respectively arranged at two ends of the curve platform and a plurality of laser refraction components which are correspondingly arranged on the platform door; wherein,
the laser emission component is fixedly arranged on the station board, does not invade the limit of the train and comprises a plurality of laser emitters which can respectively emit laser along the horizontal direction; the plurality of laser transmitters are sequentially arranged along the vertical direction and are respectively fixed on a first upright post arranged along the vertical direction, and all laser beams emitted by the laser transmitters are positioned in the same vertical plane;
the laser receiving assembly is arranged corresponding to the laser emitting assembly, does not invade the train limit, and comprises a plurality of laser receivers which are sequentially arranged along the vertical direction, and the plurality of laser receivers are sequentially fixed on a second upright post which is arranged along the vertical direction; all laser beams emitted by the laser emitting assembly can be emitted to the laser receiving assembly after being correspondingly refracted by each laser refracting assembly, and the laser receiving assembly can receive all the laser beams when no obstruction exists between the platform door and the train;
the platform doors of the curve platform are formed by correspondingly splicing at least two platform door straight-line sections, the included angle between every two adjacent platform door straight-line sections is not equal to 180 degrees, and the laser refraction assemblies are respectively arranged at the two ends of the platform doors and at the joint of the two adjacent platform door straight-line sections;
the laser refraction component comprises a laser refraction unit and a driving component arranged corresponding to the laser refraction unit; the driving component is fixedly arranged on one side of the platform door, which is opposite to the track area, the setting height of the driving component corresponds to the setting height of the laser transmitter, and the laser emitted by the laser transmitter can be horizontally transmitted to the laser refraction unit adjacent to the driving component; the driving assembly comprises a deflection steering engine, a swing arm and an adjustment steering engine; the deflection steering engine is fixedly arranged on the platform door, and a deflection output shaft of the deflection steering engine is vertically arranged; the swing arm is in a rod shape which is horizontally arranged, one end of the swing arm is fixedly connected with the deflection output shaft, and the other end of the swing arm is connected with an adjusting steering engine which is vertically arranged on the adjusting output shaft; the laser refraction unit is coaxially arranged with the adjusting output shaft and is fixedly connected with the adjusting output shaft through one end of the laser refraction unit; the deflection steering engine can drive the swing arm to deflect, so that the laser refraction unit can extend into the train limit when working and is far away from the train limit when not working, and the adjustment steering engine can drive the laser refraction unit to rotate around the shaft through an adjustment output shaft, so that the adjustment of the laser refraction angle of the laser refraction unit is realized;
the laser anti-pinch detection of the curve platform can be realized through the transmission of the laser beams among the laser emission component, the laser refraction components and the laser receiving component in sequence.
2. The system for preventing clamping of platform doors of a rail transit curve platform according to claim 1, wherein the number of the platform door straight line segments is two, namely a first straight line segment and a second straight line segment, and the number of the laser refraction components is three.
3. The platform door laser pinch prevention system of a rail transit curve platform according to claim 1, wherein a receiving groove is formed on the platform door corresponding to the laser refraction assembly for receiving the laser refraction unit after being deflected away from the train limit.
4. A platform door laser pinch protection system for a rail transit curve platform according to any one of claims 1-3, wherein the laser refraction unit is a triangular prism arranged vertically.
5. A platform door laser pinch protection system of a rail transit curve platform according to any of claims 1-3, wherein the laser emitting assembly and/or the laser receiving assembly are longitudinally flush with the corresponding platform door straight line segment.
6. A control method of a platform door laser anti-pinch system of a track traffic curve platform according to any one of claims 1 to 5, comprising the following steps:
s1: after the train enters the station and stops stably, each laser refraction component receives a control signal respectively and moves towards the track area of the curve platform under the drive of the corresponding driving component until each laser refraction unit extends into the train limit and stops at a position to be operated respectively;
s2: at least one laser transmitter and at least one laser receiver start to work, the working laser transmitter transmits laser to the adjacent laser refraction units, and the laser is refracted by each laser refraction unit and then is emitted to the corresponding laser receiver;
s3: before the train is about to come out of the station, comparing the number of laser received by the laser receiving assembly with the number of working laser transmitters, feeding back corresponding signals according to comparison results, and feeding back normal signals if the comparison results are equal, wherein the station door is closed at the moment, and the train is ready to come out of the station; if the comparison results are not equal, an abnormal signal is fed back, at the moment, the platform door is closed in a suspending mode, and the train stops going out of the station until a normal signal is fed back;
s4: the feedback signal is displayed as normal, the platform door is closed, and the train is started; simultaneously, the laser emission component and the laser receiving component respectively stop working, and each laser refraction unit is respectively driven by a corresponding driving component to move in a direction deviating from the track area and away from the train limit;
s5: and stopping working after the laser refraction assemblies are restored to the initial state, and waiting for the next train to enter.
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| CN110509933B (en) * | 2019-09-02 | 2020-05-08 | 中国安全生产科学研究院 | A system and method for redundant protection of subway station platform doors |
| CN111762200A (en) * | 2020-07-24 | 2020-10-13 | 中铁第四勘察设计院集团有限公司 | Thermal imaging-based platform door swinging type anti-clamping one-way detection system and control method |
| CN113355111B (en) * | 2021-07-06 | 2022-10-14 | 广东韶钢松山股份有限公司 | Door taking mechanism |
| CN113701630A (en) * | 2021-08-26 | 2021-11-26 | 深圳信通环球科技有限公司 | Vehicle door detection device |
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