CN102518352A - Platform door control system and platform door control method - Google Patents
Platform door control system and platform door control method Download PDFInfo
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- CN102518352A CN102518352A CN2011104482300A CN201110448230A CN102518352A CN 102518352 A CN102518352 A CN 102518352A CN 2011104482300 A CN2011104482300 A CN 2011104482300A CN 201110448230 A CN201110448230 A CN 201110448230A CN 102518352 A CN102518352 A CN 102518352A
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Abstract
The invention discloses a platform door control system and a platform door control method. The platform door control system comprises a central control device and a door control device, wherein the central control device is used for receiving control instructions, logically processing the control instructions, and sending the processed control information to the door control device, and the door control device is used for executing the received control information and feeding back door state information to the central control device. According to the technical scheme, the platform door control system has the advantages that safety, stability and reliability are high, reasonable material selection is considered, product competitiveness is improved, cost is reduced and the like, and accordingly, the platform door control system meets demands of rail transit operators.
Description
Technical field
The present invention relates to the track traffic technical field, relate in particular to a kind of system and method that is used to control the platform door opening and closing state.
Background technology
In the existing rail traffic platform door control system, CCU adopts Large PLC design gate cell controller; Realize gating device with AVR single-chip microcomputer or DSP, change integrated circuit board with CAN-PCI, CAN-485,232 converters are realized the conversion of Data Transport Protocol in the system; Driver is realized output with the MOS of separation to pipe or insulated gate bipolar transistor (IGBT) in the gating device.It is poor that this makes that extended capability appears in whole door control system, and function is revised inconvenience, the line design relative complex, and stability and reliability is lower, and performance is difficult for controlling shortcomings such as interface programming inconvenience.
Summary of the invention
The objective of the invention is to propose a kind of platform gate system and method, the system that can make has higher safety, stability and reliability.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of platform door control system comprises:
CCU is used to receive control instruction and said control instruction is carried out logical process, and the control information after handling is sent to gating device;
Gating device is used to carry out the said control information that receives, and to CCU feedback door status information.
Said gating device comprises door control unit and sliding door unit, and wherein door control unit is used for realizing the control to the action of sliding door unit through carrying out control information, gathers various door status informations and fault message and sends to CCU;
Said CCU comprises:
Logic controller is used to receive the control instruction of recoil simulator, and said control instruction is carried out logical process, generates control information and is sent to the door control unit of gating device;
Cell controller is used for the door control unit that communication connects gating device;
Monitoring host computer, be used for to internal system information distribution, gather and analyze;
Protocol converter is used for the communication data of resolution unit controller and monitoring host computer and fieldbus;
Wherein logic controller is connected with door control unit, and cell controller is connected with protocol converter through the RS232 interface, and monitoring host computer is connected with protocol converter through the RS485 interface, and protocol converter is connected with door control unit through redundant double on-site bus.
Said door control unit comprises controller and driver again, and controller links to each other with driver,
When said sliding door unit was shield door, door control unit was installed in top, the body top case, comprises a controller and a driver;
When said sliding door unit was safety door, door control unit was installed in the fixation side box, comprised a controller and two drivers.
Said controller and driver all comprise one the tunnel and isolate RS232 interface and a micro-processor kernel chip; Controller also comprises two-way isolation field-bus interface and embedded sliding door unit controls program; Driver is integrated SPM and digital display tube; And embedded sliding door unit drives program
Said SPM is integrated device for power switching, drive circuit and failure detector circuit.
Said logic controller is made up of the safety relay logic,
Said cell controller is the universal small-sized programmable logical device,
Said protocol converter comprises a micro-processor kernel chip and standard industry control class guide rail clamps shell.
A kind of platform door control system; Comprise recoil simulator, CCU and gating device; Also comprise a local control device, said local control device is connected with logic controller in the CCU, when being arranged on the train orderly shutdown and the corresponding position of door of driver's cabin.
A kind of platform door control system comprises recoil simulator, CCU, gating device and local control device, also comprises a comprehensive backup unit, and said comprehensive backup unit is connected with logic controller in the CCU, is arranged on the control room, station.
A kind of control method of platform sliding door may further comprise the steps:
The control instruction that A, CCU reception train signal system or local control device send;
B, CCU carry out logical process to control instruction, after efficiency confirmed control information are sent to gating device;
C, gating device are carried out control instruction, and the door status information is fed back to CCU.
In the said steps A, said control instruction is sent to the logic controller of being made up of the safety relay logic in the CCU;
Among the said step B, the logic controller in the CCU carries out logical process to the control instruction that receives, and switch gate signal and enable signal after handling are sent to the door control unit in the gating device;
Among the said step C; Be arranged in the controller receiving key gate signal and the enable signal of the door control unit of gating device; Call the embedded driver of sliding door unit controls program in door control unit and send control signal; Said driver is according to control signal that receives and embedded sliding door unit drives program, and required movement is accomplished in control sliding door unit; Door control unit is gathered a door status information, and the protocol converter that the double on-site bus through redundancy is sent in the CCU carries out the communications protocol conversion, is sent to monitoring host computer and cell controller after the conversion.
Adopted technical scheme of the present invention, the system that can make has higher safety, stability and reliability, takes into account reasonable material simultaneously, improves product competitiveness, reduces cost; Make system itself meet the demand of rail transportation operation side, make things convenient for modify feature, make things convenient for spare part.
Description of drawings
Fig. 1 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 1.
Fig. 2 is the structural representation of the CCU that provides of the specific embodiment of the invention 1.
Fig. 3 is the structural representation of the gating device that provides of the specific embodiment of the invention 1.
Fig. 4 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 2.
Fig. 5 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 3.
Fig. 6 is the schematic flow sheet of the platform screen door control method that provides of the specific embodiment of the invention 1.
Fig. 7 is the schematic flow sheet of the platform screen door control method that provides of the specific embodiment of the invention 2.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and through the specific embodiment.
Fig. 1 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 1.
Platform door control system as shown in Figure 1, CCU 101 is used to receive control instruction and said control instruction is carried out logical process, and the control information after handling is sent to gating device; Gating device 102 is used to carry out the said control information that receives, and to CCU feedback door status information.
As shown in Figure 2; CCU in the platform door control system that the specific embodiment of the invention 1 provides; Further comprise logic controller 201; Be used to receive the control instruction that the train signal system sends, said control instruction is carried out logical process, generate control information and be sent to the door control unit of gating device; Cell controller 202 is used for controlling the door control unit of gating device; Monitoring host computer 204, be used for to internal system information distribution, gather and analyze; Protocol converter 203 is used for the communication data of resolution unit controller and monitoring host computer and fieldbus;
Said logic controller 201 is made up of the safety relay logic; One cover CCU all is set in the shield door safety door canyon at each station; One cover CCU comprises two cover logic controllers, after the safety relay logical process of all crucial control instructions by high reliability, controls the shield door safety door of up and descending both sides platform respectively; Guarantee for each unit sliding door provides correct rigid line control information, guarantee the reliability of system.
Said cell controller 202 is the universal small-sized programmable logical device, and the cell controller that is for example designed by Siemens general small-size S7 200 PLC makes things convenient for modify feature, makes things convenient for spare part, reduces cost, and meets the demand of rail transportation operation side.Inner two cell controllers of CCU are delivered to the status information of all equipment that need keep watch in this station after integrated the display terminal of the monitoring host computer 204 in the CCU.
Said protocol converter 203 comprises a micro-processor kernel chip, isolate RS232 and RS485 interface respectively one the tunnel, isolated can EBI two-way and standard industry control class guide rail clamp shell; And embedded " shield door safety door system CAN communications protocol V1.0 ", " shield door safety door system RS485 (232) communications protocol V1.0 "; Communication speed is up to 125KBPS (200 meters), and the bit error rate is lower than 10
-6Inferior.
Protocol converter dissection process CAN fieldbus is to the communication data between monitoring host computer and the cell controller; Protocol converter has been peeled off CAN bus protocol layer; Realize data penetration transmission; Data transmission efficiency is greatly improved, reduced the communication load of monitoring host computer and cell controller, make programming easier.Also reduce the configuration needs of monitoring host computer and cell controller, enlarged the selection level of configuration.
As shown in Figure 3; Gating device in the platform door control system that the specific embodiment of the invention 1 provides; Further comprise door control unit 301 and sliding door unit 302, wherein door control unit is used for through carrying out control information; Realization is gathered various door status informations and fault message and is sent to CCU the control of sliding door unit action.Various door status informations of gathering and fault message send to CCU through redundant CAN bus monitoring host computer.Through the programming/debugging interface that is provided with in the door control unit, can be online or off-line adjustment parameter and software configuration, and can programme again and the resetting of parameter, but have the off-line debug function of this control module.
Said door control unit 301 comprises controller and driver, and controller links to each other with driver, except connecting through rigid line, also links to each other through the RS232 interface; Controller and driver all comprise one the tunnel and isolate RS232 interface and a micro-processor kernel chip.
Said micro-processor kernel chip has the processing frequency of 100MHz, and the individual instructions time of implementation can efficiently move system less than 10 nanoseconds, and the system scan time is less than 5 milliseconds.2 integrated CAN passages of chip realize that system bus are redundant, the many holotypes and the bus arbitration of CAN interface, and the two-forty (1MBps) and the extremely low bit error rate that have guaranteed system communication are (less than 10
-6Inferior), system response time makes grid reliable and stable less than 300 milliseconds.The functions such as universal pulse width modulation of the pulsewidth modulation of built-in chip type Electric Machine Control, orthogonal encoder interface, 6 outputs make motor-driven realize specialty, easy more, and performance is more reliable and more stable.
Said controller also comprises two-way isolated can field-bus interface and embedded sliding door unit controls program, said driver is integrated SPM and digital display tube, and embedded sliding door unit drives program.Said SPM; Not only integrate device for power switching and drive circuit, but also in keep and can detect overvoltage, the testing circuit of overcurrent and fault such as overheated; Through on a large scale integrated, the coupling power component; Reduced the discreteness of discrete component, the product design circuit is more succinct, thereby makes output control stable more, reliable.
When said sliding door unit was shield door, door control unit was installed in top, the body top case, comprises a controller and a driver; When said sliding door unit was safety door, door control unit was installed in the fixation side box, comprised a controller and two drivers.
Said sliding door unit also comprises a status indicator lamp, motor and electromagnetic lock.
When sliding door was closed locking, the door status indicator lamp extinguished; When sliding door was opened, the door status indicator lamp was lighted; Open, close door status indicator lamp flicker when reaching malfunction in the closed procedure at sliding door; Adopt different flicker frequencies to represent fault or normal unlatching, close closed procedure.Below be door status indicator lamp state table:
| Door opening and closing state | Indicator lamp (DOI) state |
| Sliding door normal door process (escape door locking) | Flicker 1 |
| The sliding door process (escape door locking) of normally closing the door | Flicker 1 |
| Sliding door fully open position (escape door locking) | Chang Liang |
| Sliding door is closed and locked position (escape door locking) | Extinguish |
| Escape door is opened, and closes on the sliding door fault-free | Chang Liang |
| Sliding door cell failure state | Flicker 2 |
Wherein, the frequency of " flicker 2 " is higher than " flicker 1 " of normal switch door process, and indicator lamp possesses " sound (buzzing) prompting " function.
Said motor generally adopts direct current generator, to guarantee the gate required precision.Employing is by the mode of operation of door control unit control, and the shell protection class of motor is IP54.
Said electromagnetic lock mainly is made up of mechanical part and electric part.Wherein, mechanical part guarantees can lock after sliding door moves to latched position; Electric part guarantees through travel switch the feedback of status of sliding door to door control unit.Electromagnetic lock provides following state: closed condition, locking state, the full-gear of single fan sliding door, three kinds of states offer the locking safety return circuit and use, and also can the sliding door current states be fed back to this pairing door control unit in sliding door unit.
The sliding door unit further is provided with a control box.Said control box is established " automatically, manually closes, manually open, isolate " four key switches and a green indicating lamp (position automatically), and key turns clockwise from " automatically " position 90 ° and is " manually closing ", and turning clockwise 90 ° is " manually opening " again; Can not directly rotate to " isolation " position from " manually opening "; Be rotated counterclockwise 90 ° from " automatically " position and be " isolation " position." automatically " position correspondence is established a green light, and green light is bright when key is in this.Key only can take out in automatic position and when isolating the position." automatically " position and " isolation " position get into safety return circuit.
Key switch through control box can be selected the following operations pattern:
" automatically " position: when changeover switch is in " automatically " position, allow door control unit to receive " order of opening the door " and " order of closing the door " of centre panel;
" isolation " position: when changeover switch was in " isolation " position, single sliding door unit and system isolated, and cut off the supply of electric power of this unit, do not influence the operate as normal of whole system, were convenient to maintenance.Under this pattern, the safety return circuit of this grade door is not by bypass;
" manually close " or " manually opening " position: when switch is in " manually closing " or " manually opening " position, do not carry out order from centre panel.Door leaf can be operated through " manually closing " or " manually opening " of being arranged on the control box on the spot, and the safety return circuit at this sect is by bypass.
Said control box generally is installed in platform side dodge gate column lower end, makes things convenient for the platform side staff to carry out the pattern conversion through key.No matter occurring network communication failure, power failure, door control unit fault, door machine fault and other fault in each sliding door unit; All can this element be isolated through control box; Cut off the power supply of motor and electric locking, thereby do not influence the operate as normal of whole system.The setting of control box fully takes into account the security of operation of system.
The described platform door control system of this embodiment is system's power supply through the power supply automatic switchover case that is arranged on canyon.
The system equipment power supply comprises driving power and control power supply.The internal system power-supply system according to driving power and control power supply separately, the fault principle of disperseing, isolating carries out distribution, to guarantee reliable power supply.
System disposition UPS and batteries are as standby electric power.Under the normal condition, by automatically switch case power supply of power supply.During forced outage, and the two-way power supply is supplied power to system by UPS and batteries all under the situation of dead electricity.The capacity of standby electric power guarantees when forced outage, and the control system was operated 5 times the moving door switch of every sideslip in 1 hour at least.
Be to guarantee the reliability of system's consumer power supply, single distribution loop only be wherein one sliding door distribution of every joint vehicle, guarantees that other sliding door of a car of correspondence when one road power failure wherein can normally be opened.
The system power supply design scheme is following:
Power supply adopts and drives power supply and control power supply pattern separately, is made up of separate driving power and control power supply.Driving power is made up of rectification module, battery, power supply unit, supervising device and insulating monitoring module; The control power supply is made up of rectification module, redundant UPS module, battery, DC/DC module and power supply unit.Power-supply system adopts modularized design, realizes the N+1 redundancy backup.Power-supply system has perfect defencive function, intelligent monitoring system, the various parameters of real-time monitoring system operation.Power-supply system is the pattern of working online, and is implemented in OIR and on-line maintenance function.Power supply capacity is configured by the double-sided doors unit.When AC dump, drive battery and can guarantee that all gate cells of bilateral platform moved 5 times in 1 hour; The control battery can provide the control appliance continuous service 1 hour required energy.
Fig. 4 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 2.
As shown in Figure 4, on the architecture basics of the platform door control system that the specific embodiment 1 provides, further increase comprehensive backup unit 403, said comprehensive backup unit 403 is connected with the logic controller of CCU 401.
When train signal thrashing, train operator or platform personnel can switch to the control of platform level with system-level control through " operation allows " key switch of local control device, carry out the on/off operation of shield door safety door to realize gating device 402.The damage of the monitoring host computer in the CCU 401 does not influence local control device yet and carries out associative operation.The operator precedence of local control device is superior to system-level control.
Under the normal operation situation, the every side platform design 1 cover local control device in every seat coach station, the door of driver's cabin makes things convenient for driver operation and monitor door ON/OFF situation relatively when the installation site of local control device and train orderly shutdown.
The function that local control device possesses " interlocking releasing " is removed the lock-out state of train.When the inoperation local control device, " ASD/EED closes and locks ", " ASD opens the door " status indicator lamp can truly reflect a state on the local control device panel, and can guarantee that the driver in driver's cabin observes led status is convenient.
Fig. 5 is the structural representation of the platform door control system that provides of the specific embodiment of the invention 3.
As shown in Figure 5, on the architecture basics of the platform door control system that the specific embodiment 2 provides, further increase comprehensive backup unit 504, said comprehensive backup unit 504 is connected with logic controller in the CCU 501.
On comprehensive backup unit 504, be open the door key switch, door opening state indicator lamp, the status indicator lamp of closing the door of unit setting, and a lamp inspection button is set, with the duty of indicator lamp on the test synthesis backup unit with every side door.The status indicator lamp that opens the door, closes the door can reflect a state in real time, and Presentation Function is consistent with the status indicator lamp of local control device.
AT STATION in emergency circumstances (like fire); The key switch operated on the comprehensive backup unit of control room is got to the position of opening the door AT STATION; Control gating device 502 is opened sliding door, and sliding door is opened back central processing unit 501 panels, local control device 503 fully, comprehensively the indicator lamp that opens the door of backup unit 504 is bright.This order belongs to the order of promptly opening the door under the state of emergency, and priority is higher than control of platform level and system-level control.
Fig. 6 is the schematic flow sheet of the platform screen door control method that provides of the specific embodiment of the invention 1.As shown in Figure 6, this flow process mainly may further comprise the steps:
Step S601, train arrival and when being parked in the error range of permission, the train signal system sends the opening-closing door control instruction, and CCU receives the control instruction that the train signal system sends;
Step S602, CCU carries out logical process to said control instruction, and the control information after confirming will handle after it is effectively is sent to gating device;
Step S603, gating device carry out said control information, accomplish corresponding opening-closing door action, and the door status information after will accomplishing feed back to CCU.
Among the said step S601, said control instruction is sent to the logic controller of being made up of the safety relay logic in the CCU;
Among the said step S602, the logic controller in the CCU carries out logical process to the control instruction that receives, and switch gate signal and enable signal after handling are sent to the door control unit in the gating device;
Among the said step S603; Be arranged in the controller receiving key gate signal and the enable signal of the door control unit of gating device; Call the embedded driver of sliding door unit controls program in door control unit and send control signal; Said driver is according to control signal that receives and embedded sliding door unit drives program, and required movement is accomplished in control sliding door unit; Door control unit is gathered a door status information, and the protocol converter that the double on-site bus through redundancy is sent in the CCU carries out the communications protocol conversion, is sent to monitoring host computer and cell controller after the conversion.
This control method belongs to system-level control method, is the mode of under normal operation mode, by the train signal system shield door safety door being controlled.
Fig. 7 is the schematic flow sheet of the platform screen door control method that provides of the specific embodiment of the invention 2.As shown in Figure 7, this flow process mainly may further comprise the steps:
Step S701, train driver or station affair personnel pass through the opening-closing door key switch sending controling instruction of control local control device to CCU;
Step S702, CCU carries out logical process to said control instruction, and the control information after confirming will handle after it is effectively is sent to gating device;
Step S703, gating device carry out said control information, accomplish corresponding opening-closing door action, and the door status information after will accomplishing feed back to CCU.
Among the said step S701, said control instruction is sent to the logic controller of being made up of the safety relay logic in the CCU;
Among the said step S702, the logic controller in the CCU carries out logical process to the control instruction that receives, and switch gate signal and enable signal after handling are sent to the door control unit in the gating device;
Among the said step S703; Be arranged in the controller receiving key gate signal and the enable signal of the door control unit of gating device; Call the embedded driver of sliding door unit controls program in door control unit and send control signal; Said driver is according to control signal that receives and embedded sliding door unit drives program, and required movement is accomplished in control sliding door unit; Door control unit is gathered a door status information, and the protocol converter that the double on-site bus through redundancy is sent in the CCU carries out the communications protocol conversion, is sent to monitoring host computer and cell controller after the conversion.
This control method belongs to the platform stage control method, when system-level control is broken down, can carry out the operation of local control device.This control method is on the platform local control device, sliding door to be carried out the control of opening-closing door by train driver or station affair personnel.Under the train signal system failure or train signal system and CCU opening-closing door command interface malfunction; Train driver or station affair personnel can open the door, close door operation on local control device, realize the platform level control to the shield door safety door.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with this technological people in the technical scope that the present invention disclosed; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (13)
1. a platform door control system is characterized in that, comprising:
CCU is used to receive control instruction and said control instruction is carried out logical process, and the control information after handling is sent to gating device;
Gating device is used to carry out the said control information that receives, and to CCU feedback door status information.
2. platform door control system according to claim 1 is characterized in that,
Said gating device comprises door control unit and sliding door unit, and wherein door control unit is used for realizing the control to the action of sliding door unit through carrying out control information, gathers door status information and fault message and sends to CCU.
3. platform door control system according to claim 1 is characterized in that, said CCU comprises:
Logic controller is used to receive the control instruction of recoil simulator, and said control instruction is carried out logical process, generates control information and is sent to the door control unit of gating device;
Cell controller is used for the door control unit that communication connects gating device;
Monitoring host computer, be used for to internal system information distribution, gather and analyze;
Protocol converter is used for the communication data of resolution unit controller and monitoring host computer and fieldbus;
Wherein logic controller is connected with door control unit, and cell controller is connected with protocol converter through the RS232 interface, and monitoring host computer is connected with protocol converter through the RS485 interface, and protocol converter is connected with door control unit through redundant double on-site bus.
4. platform door control system according to claim 2 is characterized in that said door control unit comprises controller and driver, and controller links to each other with driver,
When said sliding door unit was shield door, door control unit was installed in top, the body top case, comprises a controller and a driver;
When said sliding door unit was safety door, door control unit was installed in the fixation side box, comprised a controller and two drivers.
5. platform door control system according to claim 4; It is characterized in that; Said controller and driver all comprise one the tunnel and isolate RS232 interface and a micro-processor kernel chip, and controller comprises that also two-way isolates field-bus interface and embedded sliding door unit controls program, driver is integrated SPM and digital display tube; And embedded sliding door unit drives program
Said SPM is integrated device for power switching, drive circuit and failure detector circuit.
6. platform door control system according to claim 3 is characterized in that,
Said logic controller is made up of the safety relay logic,
Said cell controller is the universal small-sized programmable logical device,
Said protocol converter comprises a micro-processor kernel chip and standard industry control class guide rail clamps shell.
7. according to claim 3 or 6 described platform door control systems, it is characterized in that, also comprise a local control device, said local control device is connected with logic controller in the CCU.
8. platform door control system according to claim 7 is characterized in that, also comprises a comprehensive backup unit, and said comprehensive backup unit is connected with logic controller in the CCU.
9. the control method of a platform sliding door is characterized in that, may further comprise the steps:
A, CCU receive the control instruction that the train signal system sends;
B, CCU carry out logical process to said control instruction, after efficiency confirmed control information are sent to gating device;
C, gating device are carried out said control information, and the door status information is fed back to CCU.
10. the control method of a platform sliding door is characterized in that, may further comprise the steps:
A, CCU receive the control instruction that local control device sends;
B, CCU carry out logical process to said control instruction, after efficiency confirmed control information are sent to gating device;
C, gating device are carried out said control information, and the door status information is fed back to CCU.
11. the control method according to claim 9 or 10 described platform sliding doors is characterized in that, in the steps A, said control instruction is sent to the logic controller of being made up of the safety relay logic in the CCU;
12. control method according to claim 9 or 10 described platform sliding doors; It is characterized in that; Among the step B; Logic controller in the CCU carries out logical process to the control instruction that receives, and switch gate signal and enable signal after handling are sent to the door control unit in the gating device.
13. control method according to claim 9 or 10 described platform sliding doors; It is characterized in that; Among the step C, be arranged in the controller receiving key gate signal and the enable signal of the door control unit of gating device, call the embedded driver of sliding door unit controls program in door control unit and send control signal; Said driver is according to control signal that receives and embedded sliding door unit drives program, and required movement is accomplished in control sliding door unit; Door control unit is gathered a door status information, and the protocol converter that the double on-site bus through redundancy is sent in the CCU carries out the communications protocol conversion, is sent to monitoring host computer and cell controller after the conversion.
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| CN109291940A (en) * | 2018-11-08 | 2019-02-01 | 中国铁路设计集团有限公司 | Separation door system and control method for segmented vacuum-pipeline transfer system |
| CN109403779A (en) * | 2018-10-29 | 2019-03-01 | 南京康尼电子科技有限公司 | A kind of gate based on coding form and signal system interface and working method |
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| CN110816553A (en) * | 2019-11-19 | 2020-02-21 | 日立楼宇技术（广州）有限公司 | Platform shielding door control method and system |
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