Intelligent platform door rail connecting line control device and control method

Abstract

The invention relates to an intelligent platform door rail connecting line control device and method, and the device comprises a first collection module which collects the position information and the speed value of a train in a platform range in real time; the controller is used for processing according to the position information and the train speed value to obtain an operation condition of the train and outputting a corresponding electrical acquisition signal according to the operation condition; the second acquisition module is used for respectively acquiring and outputting first electrical information of the steel rail to the ground and second electrical information of each platform door according to the electrical acquisition signal, and the controller is used for respectively outputting a second door control signal and a first control signal according to the operation condition, the first electrical information and the second electrical information; the control relay outputs a third door control signal according to the first door control signal and the second door control signal, and the platform door control system controls opening and closing of the platform door according to the third door control signal; and the contactor controls the on-off of the track connecting line according to the first control signal. And the condition is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and in particular to an intelligent platform door track connection line control device and method. Background Art

[0002] Urban rail transit lines all use a rail return system. The DC traction current flows out from the traction substation, through the overhead line to the train, drives the train motor to run, and finally flows back to the traction substation from the wheels through the rails. Considering the problem of stray current protection, the rails need to be insulated. Due to the impedance of the rails themselves and the influence of stray currents, there is a potential difference between the rails and the ground. In order to limit the potential of the rails, the solution of setting a rail potential limiting device (OVPD) at the station is adopted during engineering design. The rail potential limiting device is connected to the rail at one end and the ground busbar at the other end. An isolating switch is set inside. Under normal conditions, the rail potential limiting device is in the open state. When the potential difference between the rail and the ground busbar is measured to reach a set value, the rail potential limiting device is closed, short-circuiting the rail and the ground, forcibly clamping the rail potential below the safe potential.

[0003] Since the car body and the rails are electrically connected, and the rails and the car body are at the same potential, in order to prevent the step voltage generated when passengers get on and off the train from endangering personal safety, insulating pads are usually installed at the edge of the platform. The platform door is installed on the insulating pad and connected to the rails with a track connection line. When passengers touch the platform door when getting on and off the train, the vehicle and the platform door are at the same potential, and the potential difference between the passenger's footsteps and the hand touches is reduced to zero. When passengers step into or out of the car, due to the insulation performance of the platform, even if there is a high voltage in the car, there will be no electric shock or personal injury.

[0004] Through the above settings, under ideal conditions, the train and platform doors should maintain the same potential. However, in actual operation, the rail potential is high, causing the rail potential limiting device to frequently operate at 2 to 3 stations on each line. Once the rail potential limiting device fails to operate, it will pose a threat to the operational safety of the subway and the personal safety of passengers. In addition, with the increase in the operating years of the subway line, the aging of the platform door insulation parts themselves, and the influence of the operating environment, the insulation value of the platform door is getting lower and lower. At this time, when the rail current connects the rail current to the ground through the connecting wire, there is a situation where the connecting wire heats up or even burns out, and the platform door equipment ignites.

[0005] However, if the track connection line is removed to avoid sparking of the equipment, passengers may be electrocuted due to the high voltage difference between the train and the platform door, causing physical discomfort and numbness. In particular, electric shock may endanger the personal safety of passengers with pacemakers.

[0006] In addition, when the platform doors and station structural steel bars are not electrically insulated but the platform doors and rails are connected to the same potential, stray current enters the structural steel bars through the platform doors, causing structural corrosion, and in severe cases, causing fires and burning electromechanical equipment.

[0007] In the invention patent with publication number CN110239568A, a linkage control system and method for the safety protection of rail-ground platform doors is disclosed. When the voltage between the platform door and the rail is abnormal when the train arrives at the station, the platform door and the rail are connected to the same potential. When the platform door is closed, the equipotential connection is disconnected in time. At the same time, the platform door opening signal is combined with the protection of abnormal rail potential. The rail and the ground are short-circuited only when the rail potential is abnormally shorted when the platform door is open.

[0008] In the above linkage control system and method, the rail potential and the opening and closing status of the platform door are monitored, so that when the platform door is open and the rail potential is abnormal, the rail is short-circuited with the ground for a short time; when the platform door is closed, the equipotential connection is disconnected in time. However, the above linkage control system cannot respond in time when the track connection line connecting the platform door and the rail is heated or even burned, and in the above system, the equipment used to control the establishment and disconnection of the equipotential connection is frequently operated, and there is a risk that once the equipment fails to operate, the operational safety of the subway and the personal safety of passengers will be threatened. Summary of the invention

[0009] In order to improve the relevant technology, in actual operation, the failure of the rail potential limiting device poses a threat to the operational safety of the subway and the personal safety of passengers. There is a situation where the track connection line heats up or even burns out, causing the platform door equipment to ignite. If the track connection line is removed, passengers may be electrocuted due to the high voltage difference between the train and the platform door, endangering the personal safety of the passengers. This application provides an intelligent platform door track connection line control device and method.

[0010] The present application provides an intelligent platform door track connection line control device and method, which adopts the following technical solutions: An intelligent platform door track connection line control device includes a signal system and a platform door control system, wherein a track connection line is provided between the platform door and the rail, and a contactor is provided on the track connection line. The platform door control system is used to control the opening and closing of the platform door and output a corresponding door opening and closing signal, and further includes: The first acquisition module is used to collect the position information and train speed value of the train within the platform in real time; A control module, connected to the first acquisition module, configured to obtain the operating condition of the train according to the position information and the train speed value, and output a corresponding electrical acquisition signal according to the operating condition; A second acquisition module is connected to the controller and is used to respectively acquire the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical acquisition signal and output them, and the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; The contactor is connected to the control module and is used to perform an opening or closing operation according to the first control signal to achieve connection or disconnection of the track connection line; The human-computer interaction module is respectively connected to the platform door control system, the first acquisition module, the second acquisition module and the contactor, and is used to display the operating conditions, the first electrical information, the second electrical information and the working status of the contactor.

[0011] Optionally, the human-computer interaction module includes an alarm unit, which is respectively connected to the controller and an external rail potential limiting device, the alarm unit outputs an alarm signal according to the first electrical information, and the rail potential limiting device controls the short circuit between the rail and the ground according to the alarm signal.

[0012] Optionally, the first acquisition module includes a position sensor and a speed sensor, and the position sensor and the speed sensor are both arranged on the tunnel side to respectively collect the position information and the train speed value in real time.

[0013] Optionally, according to the position information and the train speed value, the operating condition includes: The train is about to enter the station, the position information indicates that the train is about to enter the platform range, and the train speed value is not less than a preset speed value; The train partially enters the station to clear passengers for some reason, the position information is that the front of the train enters the platform range but the rear of the train does not enter the platform range, and the train speed value is 0; The train enters the station completely and clears passengers, the position information is that the front and rear of the train have entered the platform range, and the train speed value is 0; The train partially leaves the station to clear passengers for some reason, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is 0; The train partially leaves the station, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is greater than 0; The train has completely left the station, the position information indicates that both the front and rear of the train have left the platform range, and the train speed value is greater than 0.

[0014] Optionally, the second acquisition module includes a voltage sensor and multiple current sensors, and the voltage sensor and each current sensor are arranged on the tunnel side. The voltage sensor is used to collect the voltage value between the rail and the earth according to the electrical acquisition signal, and output it as the first electrical information; the second electrical information includes a first current value and a second current value, and each current sensor collects the first current value of the connecting line and the second current value of the leakage current of the platform door according to the electrical acquisition signal.

[0015] Optionally, it also includes a data processing module, which is respectively connected to the first acquisition module, the second acquisition module and the human-computer interaction module, and is used to obtain the first electrical information, the second electrical information, the position information and the train speed value according to a preset sampling period and store them, and the human-computer interaction module obtains the operating condition, the first electrical information, the second electrical information and the working status of the contactor and displays them.

[0016] Optionally, the data processing module includes: A data cache unit, used for acquiring the first electrical information, the second electrical information, the position information and the train speed value according to the sampling period and performing cache processing; an abnormality detection unit, connected to the data cache unit, for determining whether the cached first electrical information and the second electrical information are abnormal, and outputting an abnormal data storage signal when the first electrical information and the second electrical information are abnormal; A data storage unit is connected to the abnormality detection unit, and stores the corresponding first electrical information and the second electrical information into a pre-configured non-volatile memory according to the abnormal data storage signal.

[0017] Optionally, the current sensor includes a door leakage sensor, which is used to detect the second current value. Each door leakage sensor is connected in series between two platform doors in sequence. When the second current value is not within a preset safety value range, it indicates that there is leakage in the adjacent platform doors.

[0018] Optionally, it includes a transformer T1 and a safety relay KS1, wherein the 13th pin of the safety relay KS1 is connected to the output end of the transformer T1, the control relay includes a relay KM1, the A1 pin of the safety relay KS1 is respectively connected to the 24th pin of the switch K4, the 24th pin of the switch K6, the 12th pin of the switch K1, and the 0th pin of the switch K9, the 23rd pin of the switch K4 is connected to the 12th pin of the switch K3, the 11th pin of the switch K3 is connected to the output end of the transformer T1, the 23rd pin of the switch K6 is connected to the 12th pin of the switch K5, the 11th pin of the switch K5 is connected to the 24th pin of the switch K3, and the 23rd pin of the switch K3 is connected to the The output end of the transformer T1 is connected, the 11th pin of the switch K1 is respectively connected to the 23rd pin of the switch K6 and the 12th pin of the switch K5, the 1st pin of the switch K9 is grounded, the Y1th pin of the safety relay KS1 is connected to the 21st pin of the relay KM1, the 22nd pin of the relay KM1 is connected to the Y2 of the safety relay KS1, the A2th pin of the safety relay KS1 is connected to the 23rd pin of the switch K9, the 24th pin of the switch K9 is grounded, the 14th pin of the safety relay KS1 is respectively connected to the A1th pin of the relay KM1 and the 1st pin of the diode D1, the A2th pin of the relay KM1 is grounded, and the 2nd pin of the diode D1 is grounded; The control relay also includes a chip XS8, wherein pin 8 of the chip XS8 is an output common terminal and is respectively connected to pin 1 of switch K5, pin 1 of switch K6, pin 1 of switch K7 and pin 1 of switch K8, pin 1 of the chip XS8 is connected to pin 0 of the switch K5, pin 2 of the chip XS8 is connected to pin 0 of the switch K6, pin 3 of the chip XS8 is connected to pin 0 of the switch K7, and pin 4 of the chip XS8 is connected to pin 0 of the switch K8.

[0019] Optionally, an intelligent platform door connection control method is applied to the intelligent platform door connection control system according to claim 1 to claim 7, comprising: Step S1, collecting the position information and the train speed value of the train within the platform range in real time; Step S2, obtaining the operating condition of the train according to the position information and the train speed value, and outputting the corresponding electrical acquisition signal when the operating condition indicates that the train enters the platform range; Step S3, respectively collecting and outputting the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical collection signal, and then the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; Step S4, performing an opening or closing operation according to the first control signal to achieve connection or disconnection of the connection line.

[0020] By adopting the above technical solution, the opening and closing of the platform door is not used as the basis for controlling the on-off of the track connection line or the rail potential limiting device, but the location information and train speed value of the train within the platform are collected, and the operating conditions of the train are processed by the location information and train speed value to control the on-off of the track connection line or the on-off of the rail potential limiting device. When the operating conditions indicate that passengers need to get on and off, the current value flowing through the track connection line and the voltage value of the rail grounding are detected in time, and the rail voltage limiting device is controlled to start to reduce the situation where the step voltage exceeds the safety value and threatens the personal safety of passengers. When the voltage value and current value indicate that there are safety hazards, the human-computer interaction module will promptly issue an alarm to the staff to reduce the probability of safety accidents; when the train leaves the station, the on-off of the track connection line is controlled to reduce the probability of equipment leakage and ignition.

[0021] That is, the connection line is controlled only when passengers are getting on or off the train; when the train is running, the rails and the ground form a return current, and the connection line is disconnected at this time to reduce the flow of stray current into the equipment through the connection line, thus protecting the equipment. In addition, the equipment is protected as much as possible while ensuring the personal safety of passengers, reducing the probability of equipment ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0023] Figure 1 It is the control principle diagram of the intelligent platform door connection control system.

[0024] Figure 2 It is a flow chart of the intelligent platform door connection control method.

[0025] Figure 3 It is the circuit schematic diagram of the door head box and peripheral circuits in the intelligent platform door connection control system.

[0026] Figure 4 It is the circuit schematic diagram of chip XS1 and peripheral circuits in the intelligent platform door connection control system.

[0027] Figure 5 It is the circuit schematic diagram of chip XS8 and peripheral circuits in the intelligent platform door connection control system.

[0028] In the figure: 1. first acquisition module; 2. controller; 3. second acquisition module; 4. control relay; 5. contactor; 6. alarm unit; 7. data processing module; 71. data cache unit; 72. abnormality detection unit; 73. data storage unit; 8. signal system; 9. platform door control system; 10. rail potential limiting device. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] An embodiment of the present invention provides an intelligent platform door track line control device, such as Figures 1 to 5 As shown, it includes a signal system and a platform door control system, a track connection line is provided between the platform door and the rail, a contactor is provided on the track connection line, and the platform door control system is used to control the opening and closing of the platform door and output a corresponding door opening and closing signal, and also includes: The first acquisition module is used to collect the position information and train speed value of the train within the platform in real time; A control module, connected to the first acquisition module, configured to obtain the operating condition of the train according to the position information and the train speed value, and output a corresponding electrical acquisition signal according to the operating condition; A second acquisition module is connected to the controller and is used to respectively acquire the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical acquisition signal and output them, and the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; The contactor is connected to the control module and is used to perform an opening or closing operation according to the first control signal to achieve connection or disconnection of the track connection line; The human-computer interaction module is respectively connected to the platform door control system, the first acquisition module, the second acquisition module and the contactor, and is used to display the operating conditions, the first electrical information, the second electrical information and the working status of the contactor.

[0031] Specifically, in this embodiment, within the platform range, it is detected whether a train is about to enter the station, and the first electrical information and the second electrical information are collected during the period from the train's entry to its departure. The control module controls the opening and closing of the contactor based on the operating conditions of the train, the first electrical information, the second electrical information and the door opening and closing signal to achieve the purpose of controlling the on and off of the connection line, thereby reducing the situation where the current value flowing through the connection line connecting the platform door and the rail is too large or the platform door leaks electricity, causing the equipment to ignite.

[0032] In a preferred embodiment of the present invention, the human-computer interaction module includes an alarm unit, which is respectively connected to the controller and an external rail potential limiting device, the alarm unit outputs an alarm signal according to the first electrical information, and the rail potential limiting device controls the short circuit between the rail and the ground according to the alarm signal.

[0033] Specifically, in this embodiment, based on timely controlling the on and off of the rail connection line, for the potential value between the rail and the earth, when the rail voltage exceeds the safety value, the rail potential limiting device controls the rail and the earth to short-circuit to reduce the rail voltage. The voltage threshold is 36 volts, and when the voltage value is not less than 36 volts, it indicates that the first electrical information does not meet the safety standard.

[0034] The alarm unit also includes an audible and visual alarm device. When the current value of the alarm unit exceeds the human safety current value and / or the rail voltage is not less than 36 volts, an audible and visual alarm is given at the corresponding platform door to remind passengers not to get on or off the train at the platform door.

[0035] The alarm unit can also be connected to a display screen. When the current value exceeds the human safety current value and / or the rail voltage is not less than 36 volts, an alarm message will be displayed on the display screen to remind passengers not to get on or off the train from platform doors that pose safety hazards.

[0036] In a preferred embodiment of the present invention, the first acquisition module includes a position sensor and a speed sensor, and the position sensor and the speed sensor are both arranged on the tunnel side to respectively acquire the position information and the train speed value in real time.

[0037] In a preferred embodiment of the present invention, according to the position information and the train speed value, the operating conditions include: The train is about to enter the station, the position information indicates that the train is about to enter the platform range, and the train speed value is not less than a preset speed value; The train partially enters the station to clear passengers for some reason, the position information is that the front of the train enters the platform range but the rear of the train does not enter the platform range, and the train speed value is 0; The train enters the station completely and clears passengers, the position information is that the front and rear of the train have entered the platform range, and the train speed value is 0; The train partially leaves the station to clear passengers for some reason, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is 0; The train partially leaves the station, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is greater than 0; The train has completely left the station, the position information indicates that both the front and rear of the train have left the platform range, and the train speed value is greater than 0.

[0038] In a preferred embodiment of the present invention, the second acquisition module includes a voltage sensor and multiple current sensors, and the voltage sensor and each of the current sensors are arranged on the tunnel side. The voltage sensor is used to collect the voltage value between the rail and the earth according to the electrical acquisition signal, and output it as the first electrical information; the second electrical information includes a first current value and a second current value, and each of the current sensors collects the first current value of the connecting line and the second current value of the leakage current of the platform door according to the electrical acquisition signal.

[0039] Specifically, in this embodiment, the current sensors are respectively arranged at the top and the bottom of the platform door.

[0040] When the train is about to enter the station, the track connection line is not connected, and the voltage sensor and the current sensor begin to collect the voltage value, the first current value and the second current value; When a train partially enters the station to clear passengers for some reason, the train speed value is 0 at this time, the track connection line is controlled to be connected, and the insulation resistance value is calculated based on the voltage value and the first current value. If the voltage value is not less than 36 volts or the first current value is greater than the human safety current value or the second current value is greater than the human safety current value, the platform door will not be opened, and when the voltage value is greater than 90 volts, an alarm message will be sent to the rail voltage limiting device; When the train enters the station and clears the passengers, the train speed is 0, the track connection is controlled, and the insulation resistance is calculated based on the voltage and the first current. If the voltage is not less than 36 volts or the first current is greater than the human safety current or the second current is greater than the human safety current, it indicates that there is a safety hazard, and the alarm module will release the information to prompt the staff to handle it in time; When a train partially leaves the station to clear passengers for some reason, the train speed value is 0, the track connection line is controlled to be connected, and the insulation resistance value is calculated based on the voltage value and the first current value. If the voltage value is not less than 36 volts or the first current value is greater than the human safety current value or the second current value is greater than the human safety current value, it indicates that there is a safety hazard, and when the voltage value is greater than 90 volts, an alarm message is sent to the rail voltage limiting device; When the train partially leaves the station, the train speed value is greater than 0, the track connection line is disconnected, and when the voltage value is greater than 90 volts, an alarm message is sent to the rail voltage limiting device; When the train leaves the station completely, the train speed value is greater than 0, the track connection line is disconnected, and when the voltage value is greater than 90 volts, an alarm message is sent to the rail voltage limiting device.

[0041] In a preferred embodiment of the present invention, it also includes a data processing module, which is respectively connected to the first acquisition module, the second acquisition module and the human-computer interaction module, and is used to obtain the first electrical information, the second electrical information, the position information and the train speed value according to a preset sampling period and store them, and the human-computer interaction module obtains the operating condition, the first electrical information, the second electrical information and the working status of the contactor and displays them.

[0042] In a preferred embodiment of the present invention, the data processing module includes: A data cache unit, used for acquiring the first electrical information, the second electrical information, the position information and the train speed value according to the sampling period and performing cache processing; an abnormality detection unit, connected to the data cache unit, for determining whether the cached first electrical information and the second electrical information are abnormal, and outputting an abnormal data storage signal when the first electrical information and the second electrical information are abnormal; A data storage unit is connected to the abnormality detection unit, and stores the corresponding first electrical information and the second electrical information into a pre-configured non-volatile memory according to the abnormal data storage signal.

[0043] Specifically, in this embodiment, the cache time is set to 15 seconds, and in the data cache unit, data older than 15 seconds is replaced in FIFO mode.

[0044] In the anomaly detection unit, when anomalies are detected in the voltage value, the first current value, and the second current value, the corresponding index position is recorded. After the anomaly point, the sampling value 5 seconds before and after the anomaly point is written into the non-volatile memory for 5 seconds. The operator can read the anomaly point and the data before and after it through the non-volatile memory.

[0045] The abnormal detection of voltage values ​​adopts a "3 out of 2" mechanism to avoid mis-collection and improve system reliability.

[0046] Among them, the sampling period is set to 10 milliseconds, and a curve of the insulation resistance value changing with time is synthesized according to the voltage value of the connection line and the first current value, so as to provide effective data for operation and maintenance.

[0047] In a preferred embodiment of the present invention, the current sensor includes a door leakage sensor, which is used to detect the second current value. Each of the door leakage sensors is connected in series between two of the platform doors in sequence. When the second current value is not within a preset safety value range, it indicates that there is leakage in the adjacent platform doors.

[0048] In a preferred embodiment of the present invention, a transformer T1 and a safety relay KS1 are included, wherein the 13th pin of the safety relay KS1 is connected to the output end of the transformer T1, the control relay includes a relay KM1, the A1 pin of the safety relay KS1 is respectively connected to the 24th pin of the switch K4, the 24th pin of the switch K6, the 12th pin of the switch K1, and the 0th pin of the switch K9, the 23rd pin of the switch K4 is connected to the 12th pin of the switch K3, the 11th pin of the switch K3 is connected to the output end of the transformer T1, the 23rd pin of the switch K6 is connected to the 12th pin of the switch K5, the 11th pin of the switch K5 is connected to the 24th pin of the switch K3, and the Pin 23 is connected to the output end of the transformer T1, pin 11 of the switch K1 is respectively connected to pin 23 of the switch K6 and pin 12 of the switch K5, pin 1 of the switch K9 is grounded, pin Y1 of the safety relay KS1 is connected to pin 21 of the relay KM1, pin 22 of the relay KM1 is connected to Y2 of the safety relay KS1, pin A2 of the safety relay KS1 is connected to pin 23 of the switch K9, pin 24 of the switch K9 is grounded, pin 14 of the safety relay KS1 is respectively connected to pin A1 of the relay KM1 and pin 1 of the diode D1, pin A2 of the relay KM1 is grounded, and pin 2 of the diode D1 is grounded; The control relay also includes a chip XS8, wherein pin 8 of the chip XS8 is an output common terminal and is respectively connected to pin 1 of switch K5, pin 1 of switch K6, pin 1 of switch K7 and pin 1 of switch K8, pin 1 of the chip XS8 is connected to pin 0 of the switch K5, pin 2 of the chip XS8 is connected to pin 0 of the switch K6, pin 3 of the chip XS8 is connected to pin 0 of the switch K7, and pin 4 of the chip XS8 is connected to pin 0 of the switch K8.

[0049] Specifically, in this embodiment, a fuse F1 is connected in series between the input end of the transformer T1 and the 110VDC power supply, the positive output end of the transformer T1 is connected to a capacitor X2, the negative output end of the transformer T1 is connected to a capacitor X2* and is grounded, the other end of the capacitor X2 is respectively connected to pin 0 of the switch K1, one end of the capacitor X1, pin 23 of the switch K3, pin 11 of the switch K3 and pin 13 of the safety relay KS1, pin 1 of the switch K1 is connected to a capacitor X1**, the other end of the capacitor X1** is connected to a normally open switch, the other end of the normally open switch is connected to a capacitor X1***, the other end of the capacitor X2* is respectively connected to the other end of the capacitor X1***, pin 1 of the switch K3 and pin 1 of the switch K4, the other end of the capacitor X1 is connected to a capacitor X1****, the other end of the capacitor X1**** is connected to a switch S1, pin 3 of the switch S1 is connected to the automatic control unit, pin 13 of the switch S1 is connected to the manual control unit, pin 0 of the switch K3 is connected to the other end of the automatic control unit, and pin 0 of the switch K4 is connected to the other end of the automatic control unit.

[0050] An intelligent platform door connection control method is applied to the above-mentioned intelligent platform door connection control system, such as Figure 2 As shown, including: Step S1, collecting the position information and the train speed value of the train within the platform range in real time; Step S2, obtaining the operating condition of the train according to the position information and the train speed value, and outputting the corresponding electrical acquisition signal when the operating condition indicates that the train enters the platform range; Step S3, respectively collecting and outputting the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical collection signal, and then the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; Step S4, performing an opening or closing operation according to the first control signal to achieve connection or disconnection of the connection line.

[0051] In a preferred embodiment of the present invention, before executing step S4, step S5 is also included, outputting an alarm signal according to the first electrical information, and the rail potential limiting device controls the rail to be short-circuited with the ground according to the alarm signal.

[0052] In a preferred embodiment of the present invention, before executing the step S4, it also includes a step A1 of acquiring and storing the first electrical information, the second electrical information, the position information and the train speed value according to a preset sampling period.

[0053] In summary, the opening and closing of the platform door is not used as the basis for controlling the on-off of the track connection line or the rail potential limiting device. Instead, the location information and train speed values ​​of the train within the platform are collected, and the operating conditions of the train are processed by the location information and train speed values ​​to control the on-off of the track connection line or the on-off of the rail potential limiting device. When the operating conditions indicate that passengers need to get on and off, the current value flowing through the track connection line and the voltage value of the rail grounding are detected in time, and the rail voltage limiting device is controlled to start to reduce the situation where the step voltage exceeds the safety value and threatens the personal safety of passengers. When the voltage value and current value indicate that there are safety hazards, the human-computer interaction module will promptly issue an alarm to the staff to reduce the probability of safety accidents; when the train leaves the station, the on-off of the track connection line is controlled to reduce the probability of equipment leakage and sparking.

[0054] That is, the connection line is controlled only when passengers are getting on or off the train; when the train is running, the rails and the ground form a return current, and the connection line is disconnected at this time to reduce the flow of stray current into the equipment through the connection line, thus protecting the equipment. In addition, the equipment is protected as much as possible while ensuring the personal safety of passengers, reducing the probability of equipment ignition.

Claims

1. An intelligent platform door track connection line control device, comprising a signal system and a platform door control system, wherein a track connection line is provided between the platform door and the rail, and a contactor is provided on the track connection line, and the platform door control system is used to control the opening and closing of the platform door and output a corresponding door opening and closing signal, characterized in that: Also includes: The first acquisition module is used to collect the position information and train speed value of the train within the platform in real time; A control module, connected to the first acquisition module, configured to obtain the operating condition of the train according to the position information and the train speed value, and output a corresponding electrical acquisition signal according to the operating condition; A second acquisition module is connected to the controller and is used to respectively acquire the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical acquisition signal and output them, and the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; The contactor is connected to the control module and is used to perform an opening or closing operation according to the first control signal to achieve connection or disconnection of the track connection line; The human-computer interaction module is respectively connected to the platform door control system, the first acquisition module, the second acquisition module and the contactor, and is used to display the operating conditions, the first electrical information, the second electrical information and the working status of the contactor.

2. The intelligent platform door connection control system according to claim 1 is characterized in that: The human-computer interaction module includes an alarm unit, which is respectively connected to the controller and an external rail potential limiting device. The alarm unit outputs an alarm signal according to the first electrical information, and the rail potential limiting device controls the rail to be short-circuited with the ground according to the alarm signal.

3. The intelligent platform door connection control system according to claim 1 is characterized in that: The first acquisition module includes a position sensor and a speed sensor, and the position sensor and the speed sensor are both arranged at the tunnel side to respectively acquire the position information and the train speed value in real time.

4. The intelligent platform door connection control system according to claim 1, characterized in that: According to the position information and the train speed value, the operating conditions include: The train is about to enter the station, the position information indicates that the train is about to enter the platform range, and the train speed value is not less than a preset speed value; The train partially enters the station to clear passengers for some reason, the position information is that the front of the train enters the platform range but the rear of the train does not enter the platform range, and the train speed value is 0; The train enters the station completely and clears passengers, the position information is that the front and rear of the train have entered the platform range, and the train speed value is 0; The train partially leaves the station to clear passengers for some reason, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is 0; The train partially leaves the station, the position information is that the front part of the train leaves the platform range, the rear part is still within the platform range, and the train speed value is greater than 0; The train has completely left the station, the position information indicates that both the front and rear of the train have left the platform range, and the train speed value is greater than 0.

5. The intelligent platform door connection control system according to claim 1, characterized in that: The second acquisition module includes a voltage sensor and multiple current sensors, and the voltage sensor and each current sensor are arranged on the tunnel side. The voltage sensor is used to collect the voltage value between the rail and the earth according to the electrical acquisition signal, and output it as the first electrical information; the second electrical information includes a first current value and a second current value, and each current sensor collects the first current value of the connecting line and the second current value of the leakage current of the platform door according to the electrical acquisition signal.

6. The intelligent platform door track connection line control device according to claim 1, characterized in that: It also includes a data processing module, which is respectively connected to the first acquisition module, the second acquisition module and the human-computer interaction module, and is used to obtain the first electrical information, the second electrical information, the position information and the train speed value according to a preset sampling period and store them, and the human-computer interaction module obtains the operating condition, the first electrical information, the second electrical information and the working status of the contactor and displays them.

7. The intelligent platform door connection line control device according to claim 6, characterized in that: The data processing module comprises: A data cache unit, used for acquiring the first electrical information, the second electrical information, the position information and the train speed value according to the sampling period and performing cache processing; an abnormality detection unit, connected to the data cache unit, for determining whether the cached first electrical information and the second electrical information are abnormal, and outputting an abnormal data storage signal when the first electrical information and the second electrical information are abnormal; A data storage unit is connected to the abnormality detection unit, and stores the corresponding first electrical information and the second electrical information into a pre-configured non-volatile memory according to the abnormal data storage signal.

8. The intelligent platform door connection line control device according to claim 5, characterized in that: The current sensor includes a door leakage sensor, which is used to detect the second current value. Each door leakage sensor is connected in series between two platform doors in sequence. When the second current value is not within a preset safety value range, it indicates that there is leakage in the adjacent platform doors.

9. The intelligent platform door track connection line control device according to claim 1, characterized in that: The invention comprises a transformer T1 and a safety relay KS1, wherein the 13th pin of the safety relay KS1 is connected to the output end of the transformer T1, the control relay comprises a relay KM1, the A1 pin of the safety relay KS1 is respectively connected to the 24th pin of the switch K4, the 24th pin of the switch K6, the 12th pin of the switch K1, and the 0th pin of the switch K9, the 23rd pin of the switch K4 is connected to the 12th pin of the switch K3, the 11th pin of the switch K3 is connected to the output end of the transformer T1, the 23rd pin of the switch K6 is connected to the 12th pin of the switch K5, the 11th pin of the switch K5 is connected to the 24th pin of the switch K3, and the 23rd pin of the switch K3 is connected to the The output end of the transformer T1, the 11th pin of the switch K1 is respectively connected to the 23rd pin of the switch K6 and the 12th pin of the switch K5, the 1st pin of the switch K9 is grounded, the Y1th pin of the safety relay KS1 is connected to the 21st pin of the relay KM1, the 22nd pin of the relay KM1 is connected to the Y2 of the safety relay KS1, the A2th pin of the safety relay KS1 is connected to the 23rd pin of the switch K9, the 24th pin of the switch K9 is grounded, the 14th pin of the safety relay KS1 is respectively connected to the A1th pin of the relay KM1 and the 1st pin of the diode D1, the A2th pin of the relay KM1 is grounded, and the 2nd pin of the diode D1 is grounded; The control relay also includes a chip XS8, wherein pin 8 of the chip XS8 is an output common terminal and is respectively connected to pin 1 of switch K5, pin 1 of switch K6, pin 1 of switch K7 and pin 1 of switch K8, pin 1 of the chip XS8 is connected to pin 0 of the switch K5, pin 2 of the chip XS8 is connected to pin 0 of the switch K6, pin 3 of the chip XS8 is connected to pin 0 of the switch K7, and pin 4 of the chip XS8 is connected to pin 0 of the switch K8.

10. An intelligent platform door connection control method, applied to the intelligent platform door connection control system according to claim 1 to claim 7, characterized in that: include: Step S1, collecting the position information and the train speed value of the train within the platform range in real time; Step S2, obtaining the operating condition of the train according to the position information and the train speed value, and outputting the corresponding electrical acquisition signal when the operating condition indicates that the train enters the platform range; Step S3, respectively collecting and outputting the first electrical information of the rail to the ground and the second electrical information of each platform door according to the electrical collection signal, and then the control module outputs a first control signal according to the operating condition, the first electrical information, the second electrical information and the door opening and closing signal; Step S4, performing an opening or closing operation according to the first control signal to achieve connection or disconnection of the track line.

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