CN110103994B - Retractable anti-pinch detection system for platform door of curve platform and control method thereof - Google Patents

Abstract

The invention discloses a retractable anti-pinch detection system for a platform door of a curve platform and a control method thereof, which belong to the technical field of safety detection of the platform door. The retractable anti-pinch detection system is simple in structure, simple and convenient to control, high in accuracy of adjustment and control, capable of being effectively applicable to a curve platform, capable of achieving anti-pinch detection between a platform door and a train body, capable of avoiding a large number of arrangement of a laser emitting assembly and a laser receiving assembly, capable of saving arrangement cost of the anti-pinch detection system, capable of improving accuracy of anti-pinch detection of the curve platform, capable of guaranteeing stable and safe operation of the curve platform of rail transit, and good in application prospect and popularization value.

Description

Retractable anti-pinch detection system for platform door of curve platform and control method thereof

Technical Field

The invention belongs to the technical field of safety detection of platform doors, and particularly relates to a retractable anti-pinch detection system for a platform door of a 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 on the upright posts at two ends of the platform door, because the platform door is a movable part, vibration in the working process can cause 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 of the prior art, the invention provides a platform door retractable anti-pinch detection system of a curve platform and a control method thereof, wherein a laser emitting component, a laser receiving component and a laser deflection component are correspondingly arranged on a platform door of the curve platform, the laser deflection component correspondingly realizes the transmission of laser in the train limit of the curve platform, the laser anti-pinch detection of the curve platform can be effectively realized, the detection accuracy is high, the error is small, and the laser emitting component, the laser receiving component and the laser deflection component can be retracted away from the train limit when not working, so that the intrusion of the anti-pinch detection system to the train limit can be effectively avoided, and the running safety and stability of the train of the curve platform are ensured.

In order to achieve the above object, according to one aspect of the present invention, there is provided a retractable anti-pinch detection system for a platform door of a curved platform, comprising a laser emitting assembly and a laser receiving assembly separately provided at both ends of the platform door, and a laser deflecting assembly provided at a middle portion of the platform door; wherein,

the platform door is formed by correspondingly splicing two platform door straight line sections, namely a first straight line section and a second straight line section, the included angle between the two platform door straight line sections is not equal to 180 degrees, and the laser deflection assembly is correspondingly arranged at the joint of the two platform door straight line sections opposite to the track area;

The laser emission component is arranged opposite to the track area, is arranged at one end of the first straight line section, which is away from the second straight line section, and comprises at least one laser emitter capable of emitting laser and a first driving unit which is arranged corresponding to the laser emitter, wherein the first driving unit is arranged on the first straight line section and can correspondingly drive the laser emitter to move so that the laser emitter can enter a train limit when working and is far away from the train limit when not working;

the laser receiving assembly is arranged corresponding to the laser emitting assembly, is arranged at one end of the second straight line section, which is away from the first straight line section, and correspondingly comprises at least one laser receiver capable of receiving laser and a second driving unit which is arranged corresponding to the laser receiver, and the second driving unit is arranged on the second straight line section and can correspondingly drive the laser receiver to move, so that the laser receiver can enter the train limit when working and is far away from the train limit when not working;

the laser deflection assembly comprises at least one deflection unit and a third driving unit which is arranged corresponding to the deflection unit, the third driving unit can drive the deflection unit to enter or leave the train limit, then the laser transmitter, the deflection unit and the laser receiver can respectively enter the train limit and are opposite in longitudinal direction, laser emitted by the laser transmitter can longitudinally irradiate the deflection unit and irradiate the laser receiver after deflected on the deflection unit, and therefore laser pinch-proof detection of a curve platform can be achieved through transmission of the laser between the laser transmitter, the deflection unit and the laser receiver.

As a further improvement of the present invention, the first driving unit and the second driving unit are respectively a rotation unit;

the rotation unit is in including setting up rotation steering wheel and the swing arm that the level set up on the platform door, the rotation output shaft of rotation steering wheel is along vertical setting, the one end fixed connection of swing arm is in on the rotation output shaft, and can rotate under the drive of rotation output shaft, just the other end of swing arm corresponds to be connected laser emitter or laser receiver.

As a further improvement of the present invention, the first driving unit and the second driving unit are respectively telescopic units;

the telescopic unit comprises a telescopic component arranged on the platform door and a telescopic arm arranged transversely, the telescopic component corresponds to one end of the telescopic arm, the telescopic arm can be driven to reciprocate transversely, and one end of the telescopic arm, which is away from the telescopic component, is correspondingly connected with the laser transmitter or the laser receiver.

As a further development of the invention, the deflection unit is a reflection unit which can be operated to extend into the train limit and can reflect the laser light from the laser transmitter correspondingly, so that the laser light can be directed to the corresponding laser receiver.

As a further development of the invention, the deflection unit is a refractive unit which can be operated to extend into the train limit and which can correspondingly refract the laser light from the laser transmitter such that the laser light can be directed after refraction to the corresponding laser receiver.

As a further improvement of the invention, the refraction unit is arranged vertically and is provided with an adjusting steering engine corresponding to the refraction unit, and the third driving unit comprises a driving component and a connecting rod which is arranged horizontally;

the driving assembly is arranged corresponding to one end of the connecting rod, can correspondingly drive the connecting rod to reciprocate, and the adjusting steering engine is arranged at the other end of the connecting rod, so that an adjusting output shaft of the adjusting steering engine is vertically arranged; correspondingly, one end of the refraction unit is coaxially connected with the adjusting output shaft, so that the refraction unit can realize adjustment of the refraction angle under the rotation of the adjusting output shaft.

As a further improvement of the invention, a plurality of laser transmitters are correspondingly arranged, and the plurality of laser transmitters are vertically aligned in sequence.

As a further improvement of the invention, the laser receivers are arranged in one-to-one correspondence with the laser transmitters, i.e. the receivers are arranged in a plurality of vertically aligned in sequence.

As a further development of the invention, the angle through which the laser transmitter and the laser receiver need to be turned when switching from the initial state to the working state is 90 °, and the laser transmitter and the laser receiver are in the initial state flush with the corresponding platform door straight section in the longitudinal direction.

In another aspect of the present invention, a control method for a retractable anti-pinch detection system for a platform door of a curved platform is provided, which comprises the following steps:

s1: after the train enters the station and stops stably, the laser emission component, the laser receiving component and the laser deflection component respectively receive control signals to prepare for starting work and move to a working position in the train limit under the driving of a corresponding driving unit until the laser emitter, the laser receiver and the deflection unit respectively extend into the train limit and stop at a to-be-working position;

s2: at least one laser transmitter and at least one laser receiver start to work, the working laser transmitter transmits laser to the deflection unit, and the laser is correspondingly deflected by the deflection 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 transmitter, the laser receiver and the deflection unit are respectively driven by corresponding driving units to move in the direction deviating from the track area and away from the train limit;

s5: and the laser emission component, the laser receiving component and the laser deflection component stop working after being restored to the initial state respectively, and wait 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) According to the retractable anti-pinch detection system for the platform door of the curve platform, the laser emitting component and the laser receiving component are respectively arranged at the two ends of the platform door of the curve platform, the laser deflection component is arranged at the joint of the straight line sections of the two platform doors, the laser beam emitted by the laser emitting component is deflected by the laser deflection component, then the laser beam can be emitted to the laser receiving component, so that the number of the received laser beams and the number of the emitted laser beams can be compared by the laser receiving component, whether people or objects are clamped in a train limit can be judged, anti-pinch detection between the platform door and a train body on the curve platform is realized, a large number of the laser emitting component and the laser receiving component are avoided, and the setting cost of the anti-pinch detection system on the curve platform is reduced;

(2) According to the platform door retractable anti-pinch detection system of the curve platform, the driving units are respectively arranged corresponding to the laser emission component, the laser receiving component and the laser deflection component, the corresponding driving units respectively drive the laser emitter, the laser receiver and the deflection unit to extend into the limit of a train when working, and the components are driven to be far away from the limit of the train after the working of the components is finished, so that the anti-pinch detection accuracy is ensured, meanwhile, the situation that the anti-pinch detection system is possibly scratched and damaged a train body after invading the limit of the train is effectively avoided, the running safety of the train and the setting stability of the anti-pinch detection system are ensured, and the service life of the anti-pinch detection system is prolonged;

(3) The platform door retractable anti-pinch detection system of the curve platform has various moving forms corresponding to the laser emission component and the laser receiving component, can be suitable for different design requirements, can reflect or refract the deflection form of the laser by the laser deflection component, has strong selectivity, can be effectively suitable for the curve platform under different application environments, greatly improves the compatibility of the anti-pinch detection system, and reduces the setting cost of the anti-pinch detection system;

(4) The control method of the retractable anti-pinch detection system for the platform door of the curve platform has the advantages that the steps are simple, the control is simple and convenient, the intrusion of the anti-pinch detection system to the limit of a train during the running of the train can be effectively avoided through the retractable control of each component, no people or objects exist between the train body and the platform door before the train goes out of the station, and the running safety of the platform is fully ensured;

(5) The retractable anti-pinch detection system for the platform door of the curve platform has the advantages of simple structure, simple and convenient control, high accuracy of adjustment and control, capability of effectively realizing deflection transmission of laser beams through the arrangement of the laser deflection assembly, accurately realizing anti-pinch detection between the platform door of the curve platform and a train body, avoiding the arrangement of a large number of laser emission assemblies and laser receiving assemblies, greatly saving the arrangement cost of the anti-pinch detection system, simplifying the control process of the laser anti-pinch detection, improving the accuracy of the anti-pinch detection of the curve platform, reducing the occurrence of conditions such as omission detection, false alarm and the like, ensuring the stable and safe operation of the curve platform of the track traffic, and having better application prospect and popularization value.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a retractable anti-pinch detection system according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of the overall structure of the retractable anti-pinch detection system according to the first embodiment of the present invention when not in operation;

FIG. 3 is a top view of the retractable anti-pinch detection system according to the first embodiment of the present invention when the system is operating on a first platform;

FIG. 4 is a top view showing the structure of the retractable anti-pinch detection system according to the first embodiment of the present invention when the retractable anti-pinch detection system is operated on the second platform;

FIG. 5 is a schematic view of a laser emitting assembly of a retractable anti-pinch detection system according to a first embodiment of the present invention;

FIG. 6 is a schematic diagram of a laser receiving assembly of a retractable anti-pinch detection system according to a first embodiment of the present invention;

FIG. 7 is a schematic view of a laser deflection assembly of a retractable anti-pinch detection system according to a first embodiment of the present invention;

FIG. 8 is a schematic diagram of the overall structure of the retractable anti-pinch detection system according to the second embodiment of the present invention;

FIG. 9 is a schematic diagram of a laser emitting assembly of a retractable anti-pinch detection system according to a second embodiment of the present invention;

FIG. 10 is a schematic diagram of a laser receiving assembly of a retractable anti-pinch detection system according to a second embodiment of the present invention;

FIG. 11 is a schematic diagram of a laser deflection assembly of a retractable anti-pinch detection system according to a second embodiment of the present invention;

Like reference numerals denote like technical features throughout the drawings, in particular: 1. the device comprises a laser emission component, a laser emitter, a first rotating steering engine, a first swing arm and a first telescopic arm, wherein the laser emitter is 101, the first rotating steering engine is 102, the first swing arm is 103, and the first telescopic arm is 104; 2. the device comprises a laser receiving assembly 201, a laser receiver 202, a second rotating steering engine 203, a second swing arm 204 and a second telescopic arm; 3. station board, 4, station door component, 401, end door, 402, first straight line segment, 403, second straight line segment, 404, center pillar; 5. laser deflection assembly, 501, reflection unit, 502, first link, 503, expansion unit, 504, refraction unit, 505, adjustment steering engine, 506, second link.

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 anti-pinch detection system in the preferred embodiment of the present invention is disposed 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 a curved platform plate, a side wall of the platform plate, which is close to a track area, is bent at a certain angle in the middle, when the platform door assembly 4 is disposed, besides end doors 401 which are respectively disposed at two ends of the platform plate 3, straight line sections of the platform doors, namely a first straight line section 402 and a second straight line section 403, which are disposed between the two end surfaces of the two platform doors on the side of the track area, are correspondingly disposed, and obviously, in the curved platform, the included angle between the two platform doors is not equal to 180 ° and usually is between 180 ° and 240 ° in consideration of 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 to 3 or as shown in figure 4, and that the angle between the two platform doors in the curved platform shown in figure 4 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 anti-pinch detection system can be the same, and the main differences are reflected on the arrangement differences or the working differences of the laser deflection assemblies 5 at the joints of the platform doors.

In the anti-pinch detection system, the laser emitting component 1 and the laser receiving component 2 are correspondingly arranged at two ends of the platform door respectively, the two components are respectively arranged at the positions of the straight line sections of the two platform doors and the two ends of the door 401, the laser emitting component 1 and the laser receiving component 2 can extend into the limit of a train in working and are far away from the limit of the train in running of the train in a track area, so that the arrangement of the two components does not influence the normal running of the train, the scratch or damage of the two components to the train body is reduced, the arrangement life of the two components is prolonged, and the detection accuracy of the anti-pinch detection system is improved.

Further, the platform plate 3 in the preferred embodiment can be regarded as being formed by correspondingly splicing two platform plate units with certain included angles, the two ends of the platform plate 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, the first straight line section 402 and the second straight line section 403 respectively arranged on the two platform board units are preferably arranged along the respective positive line directions, and the two platform door straight line sections are correspondingly connected at the middle corners of the platform board 3 and correspondingly connected with the end doors 401 at the respective other ends; further, the laser emitting assembly 1 can emit at least one laser beam to the other end of the platform, and the direction of the laser beam is preferably along the positive line direction of the track on one side of the platform door, namely, the laser beam is emitted along the longitudinal direction; meanwhile, because the included angle between the two straight sections of the platform doors is not equal to 180 degrees, the direction of the positive line of the track in the track area changes at the joint of the two straight sections of the platform doors, namely, the positive line of the track in the curved platform is not arranged along a straight line, and the longitudinal/positive line directions at two sides of the joint of the two platform doors form a certain angle.

Further, since the laser beam emitted by the laser emitting component 1 is emitted along the longitudinal direction, and the longitudinal direction of the track area deflects at the joint of the straight sections of the two platform doors, in order to ensure that each laser beam can correspondingly irradiate to the laser receiving component 2, a device for deflecting the laser beam, namely the laser deflecting component 5 in the preferred embodiment, should be arranged at the position of longitudinal deflection, and all the laser beams correspondingly are emitted by the laser emitting component 1 to the laser deflecting component 5 and then deflected to the laser receiving component 2, so that the accurate transmission and reception of the laser beam on the curved platform are realized, and the anti-pinch detection of the platform door of the curved platform is completed.

Further, in order to ensure accuracy of anti-pinch detection, the laser transmitting assembly 1, the laser receiving assembly 2 and the laser deflection assembly 5 in the preferred embodiment are all arranged in a movable form, that is, the assemblies can extend into a train limit during working and be far away from the train limit during non-working, so that accuracy of anti-pinch detection is greatly improved while safe running of the train is not interfered. Obviously, the movement of each component in the preferred embodiment may be telescopic movement, or may be deflection movement, or other movement forms such as folding, as long as each component meets the setting requirements of the working state and the non-working state.

In the first embodiment, the arrangement form of each component is shown in fig. 1 to 3, wherein the laser emitting component 1 is correspondingly arranged at the end part of the first straight line section 402, which is away from the second straight line section 403, the laser receiving component 2 is correspondingly arranged at the end part of the second straight line section 403, which is away from the first straight line section 402, and both components are arranged at one side, close to the track area, of the corresponding platform door straight line section; further, in the first embodiment, the movement of the laser emitting assembly 1 and the laser receiving assembly 2 is in the form of deflection movement, as shown in fig. 1 and fig. 2 in comparison.

Further specifically, as shown in fig. 5, the laser emitting assembly 1 in the first embodiment includes at least one laser emitter 101 capable of emitting laser light, and a first rotating steering engine 102 is disposed at the end of the platform door corresponding to each laser emitter 101, that is, the first rotating steering engine 102 is disposed at the end of the first straight line segment 402 connected to the end door 401 in this embodiment; when the number of the laser transmitters 101 is multiple, the multiple laser transmitters 101 are aligned and arranged in sequence in the vertical direction, and correspondingly, the first rotating steering engines 102 arranged at the end parts of the first straight line segments 402 are arranged at intervals in sequence in the vertical direction; further, the output shaft of the first rotating steering engine 102 is vertically arranged, and is correspondingly connected with the laser transmitter 101 by a first swing arm 103, the axis of the first swing arm 103 is horizontally arranged, one end of the first swing arm is fixedly connected with the output shaft of the first rotating steering engine 102, the other end of the first swing arm is fixedly connected with the laser transmitter 101, and the bottom of the laser transmitter 101 can be further preferably connected, as shown in fig. 5.

Obviously, in the first embodiment, the first rotating steering engine 102 may be configured as one, the output shaft thereof is vertically disposed, and a rotating shaft is coaxially fixed on the output shaft, and then the end portions of the first swing arms 103, which deviate from the laser transmitters 101, are fixedly connected to the periphery of the rotating shaft, so that the simultaneous control of the laser transmitters 101 can be realized by the cooperation of the first rotating steering engine 102 and the rotating shaft; of course, the mode of setting the first rotating steering engine 102 for each laser emitter 101 can enable the laser emitter assembly 1 to freely select any laser emitter 101 to work, so that the flexibility of the work control of the laser emitters 101 is improved, the laser emitters 101 which do not work can also be used as the backup of the laser emitters 101 which do work, and the laser emitter assembly 1 can still work normally when one laser emitter 101 or one first rotating steering engine 102 fails.

Further, the laser receiving assembly 2 in the first embodiment is disposed corresponding to the laser emitting assembly 1, as shown in fig. 6, and includes at least one laser receiver 201, and the laser receivers 201 in the preferred embodiment are disposed in one-to-one correspondence with the laser emitters 101, that is, the number of the laser receivers 201 is equal to the number of the laser emitters 101. For example, in the first embodiment, the number of the laser transmitters 101 and the laser receivers 201 is three arranged along the vertical interval, as shown in fig. 5 and 6, and then each laser receiver 201 can receive the laser beam to determine that no person or object exists between the platform door and the train body, otherwise, the 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, in the first embodiment, the second rotating steering engine 202 is disposed at the end of the second straight line section 403 corresponding to the deflection of the laser receiving assembly 2, and the second rotating steering engine 202 may be disposed in a form corresponding to each laser receiver 201 one by one or in a form corresponding to one, and the method for disposing the second rotating steering engine 202 in the two forms is the same as the disposing form of the first rotating steering engine 102 in the laser emitting assembly 1, so that no description is repeated here; in the first embodiment, the laser receivers 201 are sequentially arranged vertically to be three, the second rotating steering engine 202 is arranged corresponding to each laser receiver 201, and the output shaft of the second rotating steering engine 202 is arranged vertically and is correspondingly connected with the bottom of the laser receiver 201 through the second swing arm 203 arranged horizontally.

Further, in the first embodiment, the laser transmitter 101 and the laser receiver 201 need to deflect 90 ° from the initial position to the working position respectively, in the working state, the axes of the first swing arm 103 and the second swing arm 203 are respectively arranged along the transverse direction, that is, perpendicular to the positive line direction corresponding to the track area, and the arrangement length of the two swing arms needs to satisfy that the laser transmitter 101 and the laser receiver 201 can extend into the train limit during working, but are a certain distance away from the train body; it is obvious that when the laser transmitter 101 and the laser receiver 201 are deflected back to the initial positions, the axes of the two swing arms are respectively parallel to the positive line direction of the corresponding track section, i.e. are respectively arranged in the longitudinal direction, i.e. the laser transmitter 101 is initially longitudinally flush with the first straight line section 402, and the laser receiver 201 is initially longitudinally flush with the second straight line section 403.

Further, in the first embodiment, as shown in fig. 7, the laser deflection assembly 5 disposed at the junction of the two straight sections of the platform doors includes a reflecting unit 501 capable of reflecting laser, the reflecting unit 501 is further preferably an arc plate structure, one side plate surface of the reflecting unit faces the track area, a plurality of first connecting rods 502 are correspondingly disposed on the other side plate surface along the transverse direction, and a telescopic hole along the transverse direction is formed on the platform door corresponding to each first connecting rod 502, so that the first connecting rods 502 can reciprocate in the corresponding telescopic holes, and the reflecting unit 501 can extend into the train limit and be far away from the train limit; further, a telescopic unit 503 is provided corresponding to each first link 502, which can drive the first links 502 to reciprocate, in a preferred embodiment, the telescopic unit 503 is a gear-rack assembly, the rack of which is coaxially connected with one first link 502, and through corresponding matching of the gear and the rack, rotation of the gear can drive the rack to move along the transverse direction, so as to realize corresponding driving of the reflecting unit 501.

Further, after the reflecting unit 501 in the first embodiment extends into the boundary of the train, the laser beam from the laser transmitter 101 may be correspondingly disposed on the inner side plate surface of the reflecting unit 501, and then the laser beam is deflected and directed to the corresponding laser receiver 201, and then the laser receiver 201 correspondingly receives the laser beam and feeds back the detection signal; further preferably, in the preferred embodiment, a center pillar 404 is vertically disposed between two straight sections of the platform door, and the two straight sections of the platform door are respectively connected with the side walls of the center pillar 404 by end portions, so that the laser deflection assembly 5 in the first embodiment can be correspondingly disposed on the center pillar 404, as shown in fig. 1, and meanwhile, a corresponding accommodating groove can be preferably formed on the wall surface of the center pillar 404 facing the reflecting unit 501, so that the reflecting unit 501 can be initially accommodated in the accommodating groove, as shown in fig. 2.

By the arrangement of the laser emitting assembly 1, the laser receiving assembly 2 and the laser deflection assembly 5 as described above, the pinch-proof detection of the platform door of the curve platform can be accurately realized. Of course, the anti-pinch detection system is not limited to the form shown in the first embodiment, and for example, in the second embodiment, the anti-pinch detection system is provided as shown in fig. 8 to 11, and thus laser anti-pinch detection of the curved platform is realized.

Specifically, in the second embodiment, the laser emitting assembly 1 includes at least one laser emitter 101 as shown in fig. 9, a first telescopic arm 104 is transversely disposed on the corresponding laser emitter 101, one end of the first telescopic arm is fixedly connected to the laser emitter 101, and the other end of the first telescopic arm is correspondingly connected to a telescopic driving device, where the telescopic driving device may be a gear-rack, a screw pair, a telescopic cylinder, or the like, and is not limited in particular, so long as the telescopic of the first telescopic arm 104 can be achieved; accordingly, the laser receiving assembly 2 in the second embodiment is disposed corresponding to the laser emitting assembly 1, and the laser receiver 201 can be correspondingly driven by the second telescopic arm 204 disposed along the transverse direction, as shown in fig. 10, and the telescopic driving of the second telescopic arm 204 can adopt the same driving form as the first telescopic arm 104, or can adopt a different driving form therefrom, which is not limited herein.

Further, in the second embodiment, the laser deflection assembly 5 includes at least one refraction unit 504, where the number of refraction units 504 is the same as the number of laser emitters 101, as shown in fig. 8, and then, laser light emitted from any laser emitter 101 may be shot onto the corresponding refraction unit 504 along the longitudinal direction, and the laser light beam is refracted and deflected by the refraction unit 504, so as to be shot to the corresponding laser receiver, and the refraction unit 504 may be further preferably a triangular prism arranged vertically; further, in the second embodiment, the refraction unit 504 is shown in fig. 11, where the refraction unit 504 is disposed at a junction of two straight sections of the platform doors, and an adjusting steering engine 505 and a second connecting rod 506 are disposed corresponding to the junction, the adjusting steering engine 505 is fixedly disposed at one end of the second connecting rod 506, an output shaft of the adjusting steering engine is vertically disposed, the refraction unit 504 is coaxially connected to the output shaft at one end thereof, and then the adjusting steering engine 505 can drive the refraction unit 504 to rotate along an axis of the output shaft thereof, so as to adjust a refraction angle of the refraction unit 504; further, the second link 506 is disposed along a transverse direction, a telescopic hole is formed on the platform door corresponding to the second link 506 along the transverse direction, and a telescopic driving device is disposed on a side of the telescopic hole away from the track area, so that the second link 506 can be driven to reciprocate along the transverse direction correspondingly, and further the refraction unit 504 can extend into the train limit and be controlled away from the train limit.

After the anti-pinch detection system in the preferred embodiment of the invention is set, the anti-pinch detection system is required to be debugged and calibrated. Before calibration, the platform door is required to be ensured to be blocked by no person or object on one side of the rail line area, the calibration process can be completed in the time of the station empty window, the anti-pinch detection system can be selected for automatic and periodic calibration, and the calibration period can be selected according to actual needs. Obviously, the adjustment and calibration modes also have certain differences according to the different arrangement modes of the laser deflection assembly 5 and the difference of the movement modes of the laser emitting assembly 1 and the laser receiving assembly 2.

For example, when the anti-pinch detection system is in the form of the arrangement in the first embodiment, the calibration process may be as follows: firstly, controlling the reflecting unit 501 to extend into the working position in the train limit and lock, then controlling the laser transmitter 101 and the laser receiver 201 to deflect and extend into the train limit respectively, emitting laser by the laser transmitter 101 to the reflecting unit 501, if the laser receiver 201 can receive all laser beams, completing the calibration, and then controlling each part to work according to the state when the calibration is completed; if the laser receiver 201 is unable to receive the laser beam, calibration may be performed by corresponding axial deflection of the laser transmitter 101 and/or the laser receiver 201 until the laser receiver 201 can receive the entire laser beam, and during calibration, the position of the reflecting unit 501 may also be fine-tuned in the lateral direction.

In the second embodiment, the calibration process may be as follows: firstly, controlling the laser transmitter 101, the laser receiver 201 and the refraction unit 504 to extend into the working positions in the train limit respectively and lock, and further controlling the adjustment steering engine 505 to adjust the refraction angle of the refraction unit 504 until the laser receiving assembly 2 can receive all laser beams; of course, during the calibration process, the positions of the laser transmitter 101, the laser refractor 201 and the refraction unit in the lateral direction can be adjusted correspondingly, so that the accuracy of debugging and calibration is ensured.

Further, in the preferred embodiment of the present invention, the anti-pinch detection system suitable for a rail transit curve platform can be preferably controlled by referring to the following steps when in practical application:

s1: before a train enters a station, the laser emission component 1, the laser receiving component 2 and each laser deflection component 5 are respectively in an unoperated state, and each component 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 each laser deflection component 5 respectively receive control signals to prepare for starting work, and each component respectively moves to a working position in the train limit; for example, in a first embodiment, the reflecting unit 501 moves laterally into the train boundary, and the laser transmitter 101 and the laser receiver 201 deflect a certain angle and then extend into the train boundary;

S3: the laser emitting assembly 1 and the laser receiving assembly 2 start to work, and the laser beams generated by the laser emitters 101 are correspondingly incident on the deflection units (the reflection units 501/the refraction units 504) in the laser deflection assembly 5, and then deflected by the deflection units, and are emitted to the laser receiver 201;

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 number of the laser beams received by the laser receiving component 2 is not equal to the number of the laser beams emitted by the laser emitting component 1, before feeding back an abnormal signal, the anti-pinch detection system can be finely adjusted through a corresponding adjustment steering engine or an adjustment steering engine, if the laser receiving component 2 can receive the laser beams with the number equal to the number of the laser beams emitted by the laser emitting component 1 after fine adjustment, the normal signal is fed back, and the anti-pinch detection 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 the laser emitting assembly 1, the laser receiving assembly 2 and each laser deflecting assembly 5 are controlled by the corresponding driving means respectively to start to get away from the train limit, and then each assembly deflects away from the train limit and finally resumes the initial state.

Further, the anti-pinch detection 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 component extends into the train limit, the laser transmitter 101 may start to operate immediately, or may start to transmit a laser beam when the platform door is ready to be closed. In a word, the working time interval of the anti-pinch detection system can be adjusted according to actual needs, the adjustment space is large, and the flexibility is high.

The invention relates to an anti-pinch detection system arranged corresponding to a track traffic curve platform, which comprises a laser emission component and a laser receiving component which are respectively arranged at two ends of a platform door of the curve platform, and a laser deflection component which is arranged at the joint of straight line sections of the two platform doors, wherein the laser deflection component deflects laser beams emitted by the laser emission component, so that the laser beams can be emitted to the laser receiving component, and the number of the received laser beams is compared with the number of the emitted laser beams by the laser receiving component, so that whether people or objects are clamped in a train limit can be judged, and anti-pinch detection between the platform door and a train body on the curve platform can be realized; meanwhile, the driving devices are arranged corresponding to the components respectively, so that the components can extend into the train limit during working and are far away from the train limit during non-working, the invasion of the components of the anti-pinch detection system to the train limit during train operation can be effectively avoided, the scratch and damage to the train body after the anti-pinch detection system invades the train limit are reduced, the safety of train operation and the stability of the arrangement of the anti-pinch detection system are ensured, and the service life of the anti-pinch detection system is prolonged.

The anti-pinch detection system is simple in structure, simple and convenient to control, high in accuracy of adjustment and control, capable of effectively realizing deflection transmission of laser beams through the arrangement of the laser deflection assembly, accurately realizing anti-pinch detection between the platform door of the curve platform and the train body, avoiding a large number of arrangements of the laser emission assembly and the laser receiving assembly, greatly saving the arrangement cost of the anti-pinch detection system, simplifying the control process of laser anti-pinch detection, improving the accuracy of anti-pinch detection of the curve platform, reducing the occurrence of conditions such as omission detection and false alarm, ensuring stable and safe operation of the curve platform of rail transit, and having better application prospect and popularization 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 (10)

1. The retractable anti-pinch detection system for the platform door of the curve platform is characterized by comprising a laser emitting component and a laser receiving component which are respectively arranged at two ends of the platform door, and a laser deflection component arranged in the middle of the platform door; wherein,

The platform door is formed by correspondingly splicing two platform door straight line segments, namely a first straight line segment and a second straight line segment; the included angle between the two straight line sections of the platform door is not equal to 180 degrees; a center column is vertically arranged between the two platform door straight-line sections, and the two platform door straight-line sections are respectively connected with the side wall of the center column through the end parts;

the laser emission component is arranged opposite to the track area, is arranged at one end of the first straight line section, which is away from the second straight line section, and comprises at least one laser emitter capable of emitting laser and a first driving unit which is arranged corresponding to the laser emitter, wherein the first driving unit is arranged on the first straight line section and can correspondingly drive the laser emitter to move so that the laser emitter can enter a train limit when working and is far away from the train limit when not working;

the laser receiving assembly is arranged corresponding to the laser emitting assembly, is arranged at one end of the second straight line section, which is away from the first straight line section, and correspondingly comprises at least one laser receiver capable of receiving laser and a second driving unit which is arranged corresponding to the laser receiver, and the second driving unit is arranged on the second straight line section and can correspondingly drive the laser receiver to move, so that the laser receiver can enter the train limit when working and is far away from the train limit when not working;

The laser deflection assembly is arranged on the center column and comprises at least one deflection unit and a third driving unit arranged corresponding to the deflection unit; the third driving unit can drive the deflection unit to enter or be far away from the train limit; the laser transmitter, the deflection unit and the laser receiver can respectively enter the train limit and are opposite in sequence in the longitudinal direction, and laser emitted by the laser transmitter can longitudinally shoot the deflection unit and shoot the laser receiver after deflected on the deflection unit, so that the laser anti-pinch detection of the curve platform can be realized through the transmission of the laser between the laser transmitter, the deflection unit and the laser receiver.

2. The retractable anti-pinch detection system for a platform door of a curved platform according to claim 1, wherein the first driving unit and the second driving unit are rotation units, respectively;

the rotation unit is in including setting up rotation steering wheel and the swing arm that the level set up on the platform door, the rotation output shaft of rotation steering wheel is along vertical setting, the one end fixed connection of swing arm is in on the rotation output shaft, and can rotate under the drive of rotation output shaft, just the other end of swing arm corresponds to be connected laser emitter or laser receiver.

3. The retractable anti-pinch detection system of a platform door of a curvilinear platform according to claim 1, wherein the first and second drive units are telescoping units, respectively;

the telescopic unit comprises a telescopic component arranged on the platform door and a telescopic arm arranged transversely, the telescopic component corresponds to one end of the telescopic arm, the telescopic arm can be driven to reciprocate transversely, and one end of the telescopic arm, which is away from the telescopic component, is correspondingly connected with the laser transmitter or the laser receiver.

4. A retractable anti-pinch detection system for a platform door of a curved platform according to any one of claims 1-3, wherein the deflection unit is a reflective unit which is operable to extend into the train boundary and reflect the laser light from the laser transmitter accordingly so that the laser light may be directed to a corresponding laser receiver.

5. A retractable anti-pinch detection system for a platform door of a curved platform according to any one of claims 1-3, wherein the deflection unit is a refractive unit operable to extend into the train boundary and to refract the laser light from the laser transmitter accordingly so that the laser light may be directed to a corresponding laser receiver after refraction.

6. The retractable pinch resistant inspection system of a platform door of a curvilinear platform of claim 5, wherein the refracting unit is disposed vertically and is provided with an adjustment steering engine corresponding to the refracting unit, and the third drive unit comprises a drive assembly and a horizontally disposed link;

the driving assembly is arranged corresponding to one end of the connecting rod, can correspondingly drive the connecting rod to reciprocate, and the adjusting steering engine is arranged at the other end of the connecting rod, so that an adjusting output shaft of the adjusting steering engine is vertically arranged; correspondingly, one end of the refraction unit is coaxially connected with the adjusting output shaft, so that the refraction unit can realize adjustment of the refraction angle under the rotation of the adjusting output shaft.

7. A retractable anti-pinch detection system for platform doors of a curved platform according to any one of claims 1-3 and 6, wherein the number of laser transmitters is a plurality of correspondingly arranged laser transmitters, and the plurality of laser transmitters are sequentially aligned in a vertical direction.

8. A docking station door retractable anti-pinch test system of a curved docking station according to claim 7, wherein the laser receivers are arranged in a one-to-one correspondence with the laser transmitters, i.e. the receivers are arranged in a plurality of vertically aligned pairs.

9. A docking station door retractable anti-pinch test system of a curved docking station according to claim 2, wherein the angle through which the laser transmitter and the laser receiver need to rotate when transitioning from an initial state to an operational state is 90 ° and the laser transmitter and the laser receiver are longitudinally flush with the corresponding docking station door straight line segment in the initial state.

10. A control method of a retractable anti-pinch detection system for a platform door of a curved platform according to any one of claims 1 to 9, comprising the steps of:

s1: after the train enters the station and stops stably, the laser emission component, the laser receiving component and the laser deflection component respectively receive control signals to prepare for starting work and move to a working position in the train limit under the driving of a corresponding driving unit until the laser emitter, the laser receiver and the deflection unit respectively extend into the train limit and stop at a to-be-working position;

s2: at least one laser transmitter and at least one laser receiver start to work, the working laser transmitter transmits laser to the deflection unit, and the laser is correspondingly deflected by the deflection 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 transmitter, the laser receiver and the deflection unit are respectively driven by corresponding driving units to move in the direction deviating from the track area and away from the train limit;

s5: and the laser emission component, the laser receiving component and the laser deflection component stop working after being restored to the initial state respectively, and wait for the next train to enter.