CN107705662B - Rail transit positioning simulation system and simulation demonstration method based on induction loop - Google Patents
Rail transit positioning simulation system and simulation demonstration method based on induction loop Download PDFInfo
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- CN107705662B CN107705662B CN201710890420.5A CN201710890420A CN107705662B CN 107705662 B CN107705662 B CN 107705662B CN 201710890420 A CN201710890420 A CN 201710890420A CN 107705662 B CN107705662 B CN 107705662B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
Track traffic positioning simulation system and simulation demonstration method based on induction loop. The rail transit positioning simulation system based on the induction loop comprises induction loop positioning equipment, a vehicle-mounted signal transmitter I, a vehicle-mounted signal transmitter II, a section occupation detection circuit and a computer system; the induction loop line positioning apparatus includes: indoor check signal transmitter, indoor check signal receiver, indoor train signal receiver I, indoor train signal receiver II and relay breaker. The simulation system takes an induction loop and a computer system as cores, receives signals sent by the vehicle-mounted signal transmitter I and the vehicle-mounted signal transmitter II through the indoor train signal receiver I and the indoor train signal receiver II, and disconnects the indoor checking transmitter from the induction loop, so that a relay switch of the section track occupation detection circuit falls, and the section occupation indication circuit is connected, thereby realizing the positioning of a simulated train, realizing accurate positioning, being simple and convenient to operate, and realizing visual display of the whole simulation process through a computer terminal.
Description
Technical Field
The invention relates to a rail transit positioning simulation system, in particular to a rail transit positioning simulation system based on an induction loop and a simulation demonstration method, which are suitable for technical training of higher vocational schools and rail transit enterprises.
Background
The rail transit has accuracy, continuity and reliability on the train positioning requirement; the train positioning method applied to the current rail transit comprises rail circuit positioning, axle counting positioning, inquiring-transponder positioning, speed measuring positioning, cross induction loop positioning, wireless communication positioning and the like, and the train positioning method is well applied to the rail transit in the city, wherein some technologies realize mobile blocking, so that the tracking precision of the train position is improved, and the subsequent train can safely approach to the tail position of the last confirmed front train according to the maximum allowable speed of the line section and keep a safe distance with the tail position; meanwhile, the train does not need to stop in front of the occupied track circuit partition entrance, and the running interval is obviously shortened.
At present, some rail transit train positioning methods are used for simulation teaching and training, in particular to a positioning method based on an induction loop, but because a special simulation system is not established, the teaching and training are basically carried out by using real equipment, the following defects exist:
1. the equipment not only occupies large area, but also has high cost and long purchasing period;
2. the utilization rate is low, the maintenance period is long, and the maintenance cost is high;
3. the equipment is too complicated, the operation is inconvenient, the teaching requirement can not be met, and even the equipment is disjointed with the actual teaching requirement.
Disclosure of Invention
The invention aims to solve the problems and provide a rail transit positioning simulation system and a simulation demonstration method based on an induction loop, which are accurate in positioning and simple in operation, so as to overcome the defects existing in the prior art.
The technical scheme adopted by the invention is as follows: the rail transit positioning simulation system based on the induction loop comprises induction loop positioning equipment, a vehicle-mounted signal transmitter I, a vehicle-mounted signal transmitter II, a section occupation detection circuit and a computer system;
the vehicle-mounted signal transmitter I is arranged at the front part of the train, the vehicle-mounted signal transmitter II is arranged at the rear part of the train, and the induction loop positioning equipment, the section occupation detection circuit and the computer system are arranged in the track section;
the induction loop wire positioning apparatus includes: indoor check signal transmitter, indoor check signal receiver, indoor train signal receiver I, indoor train signal receiver II and relay circuit breaker;
the section occupation detection circuit comprises a section occupation detection module, a section occupation indication circuit and a relay III, wherein two ends of the section occupation indication circuit are respectively connected with a movable contact and a fixed contact of a relay III and a relay switch III of the relay III, one end of an electromagnetic coil III of the relay III is connected with an indoor check signal receiver, the other end of the electromagnetic coil III is grounded, and the relay III is connected with a computer system through the section occupation detection module;
the relay circuit breaker comprises a relay I and a relay II, wherein one end of an electromagnetic coil I of the relay I is connected with an indoor train signal receiver I, and the other end of the electromagnetic coil I is grounded; one end of an electromagnetic coil II of the relay II is connected with an indoor train signal receiver II, and the other end of the electromagnetic coil II is grounded; the relay switch I of the relay I and the relay switch II of the relay II are connected in series between the endpoint B of the induction loop and the indoor check signal receiver;
the vehicle-mounted signal transmitter I, the vehicle-mounted signal transmitter II, the indoor checking signal transmitter, the indoor checking signal receiver and the indoor train signal receiver I are all provided with an SX1278 wireless module, and are respectively connected with the computer system through an RS485 serial communication bus;
an RS485A end of the SX1278 wireless module of the indoor check signal transmitter is connected with an endpoint B of the induction loop line through a relay switch I and a relay switch II of the relay circuit breaking device, and an RS232 end of the RS485 end is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor check signal receiver is connected with an end point A of the induction loop, an RS485B end of the indoor check signal receiver is connected with an electromagnetic coil III of a relay III of the section occupation detection circuit, and an RS232 end of the indoor check signal receiver is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor train signal receiver I is connected with an end point A of the induction loop, an RS485B end of the indoor train signal receiver I is connected with an electromagnetic coil I of a relay I of the relay circuit breaker, and an RS232 end of the indoor train signal receiver I is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor train signal receiver II is connected with an end point A of the induction loop, an RS485B end of the indoor train signal receiver II is connected with an electromagnetic coil II of a relay II of the relay circuit breaker, and an RS232 end of the indoor train signal receiver II is connected with a computer system;
the section occupation detection module is used for converting a switching signal of the relay III into a digital signal and sending the digital signal to the computer system, and the section occupation indication circuit is used for displaying the occupation state of the section track;
the vehicle-mounted signal transmitter I is used for transmitting a signal that the train head enters the track section, and the vehicle-mounted signal transmitter II is used for transmitting a signal that the train tail enters the track section;
the indoor check signal transmitter is used for transmitting a check signal indicating whether the loop line section is complete;
the indoor check signal receiver is used for receiving the check signal sent by the indoor check signal sender and controlling the working state of the section occupation detection circuit according to the state of the check signal;
the indoor train signal receiver I is used for receiving signals sent by the vehicle-mounted signal transmitter I when the train head enters the track section, and is connected with the indoor checking transmitter by switching off or switching on the induction loop line endpoint B through the relay circuit breaker;
the indoor train signal receiver II is used for receiving signals sent by the vehicle-mounted signal transmitter II when the train tail enters the track section, and is connected with the indoor checking transmitter by switching off or switching on the induction loop line endpoint B through the relay circuit breaker;
the computer system functions as:
firstly, receiving an inspection signal of an indoor inspection signal receiver;
detecting and displaying working states of an indoor check signal transmitter, a section occupation detection circuit, an indoor train signal receiver I and an indoor train signal receiver II;
when the detection section occupies the working state of the detection circuit: when the section occupation detection module detects that a relay switch III of a relay III is sucked up, a code 1 is sent to a computer system, a section occupation indication circuit is disconnected, and a computer system display screen displays a green light band corresponding to a circuit to indicate no vehicle occupation; when the section occupation detection module detects that a relay switch III of a relay III falls down, a code 0 is sent to the computer system, a section occupation indication circuit is connected, and a display screen of the computer system displays red light bands corresponding to lines to indicate that the vehicle is occupied.
The further technical scheme is as follows:
the SX1278 wireless module is a multi-channel wireless module with both receiving and transmitting functions, where:
the indoor check signal transmitter and the indoor check signal receiver adopt a channel 1, the indoor train signal receiver I and the vehicle-mounted signal transmitter I adopt a channel 3, and the indoor train signal receiver II and the vehicle-mounted signal transmitter II adopt a channel 5;
the computer system is configured to: not lower than 32 bit processor and not lower than 2GB.
The other technical scheme is as follows:
the rail transit positioning simulation demonstration method based on the induction loop line is a method for carrying out simulation demonstration by utilizing the rail transit positioning simulation system based on the induction loop line, and comprises the following steps of:
s1 track section no vehicle: the indoor train signal receiver I and the indoor train signal receiver II do not receive signals, the indoor checking signal receiver receives an inspection signal which is sent by the indoor checking signal transmitter and indicates that the loop line section is complete, the relay III of the section occupation detection circuit is driven to act, the relay switch III is started, the section occupation indication circuit is disconnected, the computer system display screen displays a green light band corresponding to the line, and the track section is indicated to be free of train occupation;
s2, when the headstock enters the track section: the indoor train signal receiver I receives a signal sent by the vehicle-mounted signal transmitter I through the sending antenna I, drives the relay I of the relay circuit breaker to act, and the relay switch I sucks and breaks the connection of the indoor checking signal transmitter and the endpoint B of the induction loop, so that the relay III of the section occupation detection circuit loses magnetism, the relay switch III falls down to switch on the section occupation indication circuit, and a computer system display screen displays red light bands corresponding to the lines to indicate that the track section has train occupation;
s3, when the tail enters the track section:
at the moment, the train head and the train tail are both positioned in a track section, an indoor train signal receiver I receives a signal sent by a vehicle-mounted signal transmitter I through a transmitting antenna I, a relay I of a relay circuit breaker is driven to act, a relay switch I is sucked and disconnected, and an indoor train signal receiver II simultaneously receives a signal sent by the vehicle-mounted signal transmitter II through the transmitting antenna II, a relay II of the relay circuit breaker is driven to act, the relay switch II is sucked and disconnected, so that the connection between an indoor checking signal transmitter and an endpoint B of an induction loop wire is kept in a disconnected state, a relay III of a section occupation detection circuit is demagnetized, the relay switch III is kept in a falling state, a section occupation indication circuit is continuously connected, a computer system display screen displays a red light band corresponding to the wire, and the train is still occupied in the track section;
s4, when the locomotive goes out of the track section: the indoor train signal receiver I can not receive the signal sent by the vehicle-mounted signal transmitter I, the relay I of the relay circuit breaker device loses magnetism, the relay switch I falls down to prepare for exciting the relay III when the train is clear, the indoor train signal receiver II can still receive the signal sent by the vehicle-mounted signal transmitter II at the moment, the relay II of the relay circuit breaker device acts, the relay switch II continues to keep in a sucking-off state, so that the connection between the indoor checking signal transmitter and the endpoint B of the induction loop wire continues to keep in the off state, the relay III of the section occupation detection circuit loses magnetism, the relay switch III continues to keep in the falling state, the section occupation indication circuit continues to keep on, and the computer system display screen displays a red light band corresponding to the line, so that the train still occupies the track section;
s5, when the tail of the vehicle clears the section: the indoor train signal receiver I and the indoor train signal receiver II do not receive signals, the indoor checking signal receiver receives checking signals sent by the indoor checking signal transmitter, the loop line section is complete, the relay I and the relay II of the relay circuit breaking device lose magnetism, the relay switch I and the relay switch Guan are connected with the indoor checking signal transmitter and the end point B of the induction loop line in a falling mode, the section occupation detection circuit is driven to act as the relay III, the relay switch III is attracted, the section occupation indication circuit is disconnected, the computer system display screen corresponds to a line to display a green light band, and no train occupation is indicated in the track section.
By adopting the technical scheme, the rail transit positioning simulation system and simulation demonstration method based on the induction loop
Has the following beneficial effects:
1. the rail transit positioning simulation system based on the induction loop uses the induction loop and the computer system as system cores, receives signals sent by the vehicle-mounted signal transmitter I and the vehicle-mounted signal transmitter II through the indoor train signal receiver I and the indoor train signal receiver II, and disconnects the indoor checking transmitter from the induction loop to enable the switch K3 of the section rail relay to fall, so that the section occupation indication circuit is connected, the simulated train positioning is better realized, the positioning is accurate, the operation is simple and convenient, and the teaching or training requirements are better met;
2. as the indoor train signal receiver I, the indoor train signal receiver II, the indoor checking transmitter, the indoor checking receiver and the section occupation detection circuit of the simulation system are all connected with the computer system through the RS485 serial communication bus, the computer system monitors the working state of the indoor train signal receiver I, the indoor checking receiver II and the section occupation detection circuit, the simulation demonstration method is simple and convenient to operate and easy to popularize, and the whole simulation demonstration process is visually displayed through the computer terminal, so that the teaching effect is good and the teaching efficiency is high;
3. the simulation system has scientific structural design, and the main module adopts a multi-channel SX1278 wireless module which has the functions of receiving and transmitting, thereby being convenient for maintenance and greatly reducing the cost.
The technical characteristics of the rail transit positioning simulation system and the simulation demonstration method based on the induction loop line are further described below with reference to the accompanying drawings and the embodiment.
Drawings
FIG. 1 is a block diagram of a rail transit positioning simulation system based on an induction loop;
fig. 2 to 6 are schematic diagrams of simulation demonstration processes:
fig. 2 is a section of no train occupied, fig. 3 is a section of train head entering the track, fig. 4 is a section of train head entering the track and a section of train tail entering the track, fig. 5 is a section of track with train head clear and train tail still in the track, fig. 6 is a section of track with train head clear and train tail clear from the track;
FIG. 7 is a schematic diagram of a computer system and a plurality of sets of rail transit positioning simulation systems based on induction loops;
in the figure:
00-computer system, 000-RS 485 serial communication bus, 01-train, 02-track, 03-induction loop, 04-zone occupancy detection circuit, 05-relay breaker, CF 1-vehicle-mounted signal transmitter I, CF 2-vehicle-mounted signal transmitter II, CFT 1-transmitting antenna I, CFT 1-transmitting antenna II, FS-indoor check signal transmitter, JS-indoor check signal receiver, NC 1-indoor train signal receiver I, J1-relay I, NC 2-indoor train signal receiver II, J2-relay II, J3-relay III, K1-relay switch I, K2-relay switch II, K3-relay switch III, L1-electromagnetic coil I, L2-electromagnetic coil II, L3-electromagnetic coil III, ZJC-zone occupancy indication circuit, GZJC-zone occupancy detection module.
Description of the embodiments
Example 1
The rail transit positioning simulation system based on the induction loop comprises induction loop positioning equipment, a vehicle-mounted signal transmitter I CF1, a vehicle-mounted signal transmitter II CF2, a section occupation detection circuit 04 and a computer system 00;
the vehicle-mounted signal transmitter I CF1 is arranged at the front part of the train, the vehicle-mounted signal transmitter II CF2 is arranged at the rear part of the train, and the induction loop positioning equipment, the section occupation detection circuit and the computer system are arranged in the track section;
the induction loop wire positioning apparatus includes: indoor check signal transmitter FS, indoor check signal receiver JS, indoor train signal receiver iinc 1, indoor train signal receiver iinc 2, and relay breaking device 05;
the section occupation detection circuit 04 comprises a section occupation indication circuit GZJC and a relay III J3, wherein two ends of the section occupation indication circuit are respectively connected with a movable contact and a fixed contact of a switch III K3 of the relay III, one end of an electromagnetic coil III L3 of the relay III is connected with an indoor checking signal receiver JS, and the other end of the electromagnetic coil III is grounded;
the relay circuit breaker 05 comprises a relay IJ 1 and a relay II J2, wherein one end of an electromagnetic coil IL 1 of the relay IJ 1 is connected with an indoor train signal receiver I NC1, and the other end of the electromagnetic coil IL 1 is grounded; one end of an electromagnetic coil II L2 of the relay II J2 is connected with an indoor train signal receiver II NC2, and the other end of the electromagnetic coil II L2 is grounded; the switch IK 1 of the relay I and the switch IIK 2 of the relay II are connected in series between the endpoint B of the induction loop and the indoor check signal receiver JS;
the vehicle-mounted signal transmitter I CF1, the vehicle-mounted signal transmitter II CF2, the indoor check signal transmitter FS, the indoor check signal receiver JS and the indoor train signal receiver I NC1 and the indoor train signal receiver II NC2 all adopt SX1278 wireless modules and are respectively connected with the computer system through RS485 serial communication buses;
the RS485A end of the SX1278 wireless module of the indoor check signal transmitter FS is connected with the endpoint B of the induction loop line through a relay switch IK 1 and a relay switch IIK 2 of a relay circuit breaker 05, and the RS232 end of the indoor check signal transmitter FS is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor check signal receiver JS is connected with an end point A of an induction loop, an RS485B end of the indoor check signal receiver JS is connected with an electromagnetic coil IIIL 3 of a relay IIIJ 3 of the section occupation detection circuit 04, and an RS232 end of the indoor check signal receiver JS is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor train signal receiver I NC1 is connected with an end point A of an induction loop, an RS485B end of the indoor train signal receiver I NC1 is connected with an electromagnetic coil IL 1 of a relay I J1 of a relay breaking device, and an RS232 end of the indoor train signal receiver I NC1 is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor train signal receiver IINC 2 is connected with an end point A of the induction loop, an RS485B end of the indoor train signal receiver IINC 2 is connected with an electromagnetic coil IIL 2 of a relay II J2 of the relay circuit breaking device, and an RS232 end of the indoor train signal receiver II NC2 is connected with a computer system;
the section occupation detection module GZJC is used for converting a switching signal of the relay III into a digital signal and sending the digital signal to the computer system, and the section occupation indication circuit ZS is used for displaying the occupation state of the section track;
the vehicle-mounted signal transmitter I CF1 is used for transmitting a signal that the train head enters the track section, and the vehicle-mounted signal transmitter II CF2 is used for transmitting a signal that the train tail enters the track section;
the indoor check signal transmitter FS is configured to transmit a check signal indicating whether the loop section is complete;
the indoor check signal receiver JS is used for receiving the check signal sent by the indoor check signal sender and controlling the working state of the section occupation detection circuit according to the state of the check signal;
the indoor train signal receiver I NC1 is used for receiving signals sent by the vehicle-mounted signal transmitter I CF1 when the train head enters the track section, and is connected with the indoor check transmitter FS by switching off or switching on the induction loop end point B through the relay circuit breaker;
the indoor train signal receiver IINC 2 is used for receiving signals sent by the vehicle-mounted signal transmitter IICF 2 when the train tail enters the track section, and is connected with the indoor check transmitter FS by switching off or switching on the induction loop line endpoint B through the relay circuit breaker;
the computer system functions as:
firstly, receiving an inspection signal of an indoor inspection signal receiver JS;
secondly, detecting and displaying working states of an indoor check signal transmitter FS, a section occupation detection circuit 04, an indoor train signal receiver I NC1 and an indoor train signal receiver II NC 2;
when the detection section occupies the working state of the detection circuit 04: when the section occupation detection module detects that a relay switch IIIK 3 of a relay IIIJ 3 is sucked up, a code 1 is sent to a computer system, a section occupation indication circuit ZS is disconnected, and a display screen of the computer system displays a green light band corresponding to a circuit to indicate no vehicle occupation; when the section occupation detection module detects that the relay switch Guan K3 of the relay III J3 falls, a code 0 is sent to the computer system, the section occupation indication circuit is connected, and a red light band is displayed on a display screen of the computer system corresponding to a circuit to indicate that the vehicle is occupied.
The computer system is configured to: not lower than 32 bit processor and not lower than 2GB.
The SX1278 wireless module is a multi-channel wireless module with the functions of receiving and transmitting, can provide the selection of a plurality of channels, can modify various parameters such as serial port baud rate, receiving and transmitting frequency, transmitting power, radio frequency air rate and the like on line, and can be directly connected with a computer system through an RS485 serial communication bus.
In this embodiment:
the indoor check signal transmitter FS and the indoor check signal receiver JS adopt a channel 1, the indoor train signal receiver I NC1 and the vehicle-mounted signal transmitter I CF1 adopt a channel 3, and the indoor train signal receiver II NC2 and the vehicle-mounted signal transmitter II CF2 adopt a channel 5; therefore, the indoor train signal receiver INC 1 can only receive the signal transmitted by the vehicle-mounted signal transmitter INC 1, and the indoor train signal receiver IINC 2 can only receive the signal transmitted by the vehicle-mounted signal transmitter IICF 2.
Example two
A rail transit positioning simulation demonstration method based on an induction loop line is a method for carrying out simulation demonstration on a rail transit positioning simulation system based on an induction loop line according to the first embodiment of the application right, and comprises the following steps:
s1 track section no vehicle: the indoor train signal receiver I NC1 and the indoor train signal receiver II NC2 do not receive signals, the indoor checking signal receiver JS receives an inspection signal which is sent by the indoor checking signal transmitter FS and indicates that the loop line section is complete, a relay III J3 of the section occupation detection circuit is driven to act, a relay switch III K3 is sucked up, a section occupation indication circuit is disconnected, and no train occupation is indicated in the track section; (see FIG. 2)
S2, when the headstock enters the track section: the indoor train signal receiver I NC1 receives a signal sent by the vehicle-mounted signal transmitter I CF1 through the sending antenna I CFT1, drives the relay I J1 of the relay circuit breaker to act, and the relay switch I K1 is sucked up and disconnected, so that the connection between the indoor checking signal transmitter FS and the endpoint B of the induction loop line is disconnected, the relay III J3 of the section occupation detection circuit is demagnetized, the relay switch III K3 falls down, and the section occupation indication circuit is connected, so that the rail section is occupied by a train; (see FIG. 3)
S3, when the tail enters the track section:
at this time, the train head and the train tail are both positioned in the track section, the indoor train signal receiver I NC1 receives a signal sent by the vehicle-mounted signal transmitter I CF1 through the transmitting antenna I CFT1, the relay I J1 of the relay circuit breaker is driven to act, the relay switch I K1 is sucked and disconnected, the indoor train signal receiver II NC2 simultaneously receives a signal sent by the vehicle-mounted signal transmitter II CF2 through the transmitting antenna II CFT2, the relay II J2 is driven to act, the relay switch II K2 is sucked and disconnected, the connection between the indoor check signal transmitter FS and the endpoint B of the induction loop is kept in an off state, the relay III J3 of the section occupation detection circuit is in a continuously falling state, and the section occupation indication circuit is continuously connected to indicate that the train still occupies the track section; (see FIG. 4)
S4, when the locomotive goes out of the track section: the indoor train signal receiver IINC 1 cannot receive the signal sent by the vehicle-mounted signal transmitter ICF 1, the relay I J1 of the relay circuit breaker is in a loss of magnetism, the relay is opened Guan K1 and falls down to prepare an excitation relay III J3 when a train is cleared, at the moment, the indoor train signal receiver IINC 2 still can receive the signal sent by the vehicle-mounted signal transmitter ICF 2, the relay II J2 of the relay circuit breaker acts, the relay switch II K2 continues to keep a suction-up off state, the connection between the indoor check signal transmitter FS and the endpoint B of the induction loop is kept in a disconnection state, the relay III J3 of the section occupation detection circuit is in a loss of magnetism, the relay III K3 continues to keep in a falling state, and the section occupation indication circuit continues to keep on to indicate that the train still occupies the track section; (see FIG. 5)
S5, when the tail of the vehicle clears the section: the indoor train signal receiver I NC1 and the indoor train signal receiver II NC2 do not receive signals, the indoor checking signal receiver JS receives an inspection signal sent by the indoor checking signal transmitter FS, the inspection signal indicates that the loop section is complete, the relay I J1 and the relay II J2 of the relay circuit breaking device are in loss of magnetism, the relay switch I K1 and the relay switch II K2 are both dropped to connect the indoor checking signal transmitter FS and the endpoint B of the induction loop, the relay III J3 of the section occupation detection circuit is driven to act, the relay switch III K3 is sucked up, the section occupation indication circuit is disconnected, and no train occupation of the track section is indicated.
As a transformation of the above embodiment, the on-board signal transmitter icf 1, the on-board signal transmitter iicf 2 or the SX1278 wireless module is not adopted, but the computer system directly sends signals with corresponding frequencies to the indoor train signal receiver icn 1 or the SX1278 module of the indoor train signal receiver iinc 2, so as to realize the simulation of train head entering the track section, train tail entering the track section and train clear.
Claims (3)
1. A rail transit positioning simulation system based on an induction loop is characterized in that: the system comprises induction loop positioning equipment, a vehicle-mounted signal transmitter I (CF 1), a vehicle-mounted signal transmitter II (CF 2), a section occupation detection circuit (04) and a computer system (00);
the vehicle-mounted signal transmitter I (CF 1) is arranged at the front part of the train, the vehicle-mounted signal transmitter II (CF 2) is arranged at the rear part of the train, and the induction loop positioning equipment, the section occupation detection circuit and the computer system are arranged in the track section;
the induction loop wire positioning apparatus includes: an indoor check signal transmitter (FS), an indoor check signal receiver (JS), an indoor train signal receiver i (NC 1), an indoor train signal receiver ii (NC 2), and a relay breaking device (05);
the section occupation detection circuit (04) comprises a section occupation detection module (GZJC), a section occupation indication circuit (ZS) and a relay III (J3), wherein two ends of the section occupation indication circuit are respectively connected with a movable contact and a fixed contact of a relay III and a relay switch III (K3), one end of an electromagnetic coil III (L3) of the relay III is connected with an indoor check signal receiver (JS), the other end of the electromagnetic coil III is grounded, and the relay III (J3) is connected with a computer system through the section occupation detection module (GZJC);
the relay circuit breaking device (05) comprises a relay I (J1) and a relay II (J2), one end of an electromagnetic coil I (L1) of the relay I (J1) is connected with an indoor train signal receiver I (NC 1), and the other end of the electromagnetic coil I is grounded; one end of an electromagnetic coil II (L2) of the relay II (J2) is connected with an indoor train signal receiver II (NC 2), and the other end of the electromagnetic coil II is grounded; the relay switch I (K1) of the relay I and the relay switch II (K2) of the relay II are connected in series between the endpoint B of the induction loop and the indoor check signal receiver (JS);
the vehicle-mounted signal transmitter I (CF 1), the vehicle-mounted signal transmitter II (CF 2), the indoor check signal transmitter (FS), the indoor check signal receiver (JS) and the indoor train signal receiver II (NC 2) of the indoor train signal receiver I (NC 1) are all made of SX1278 wireless modules and are respectively connected with the computer system through RS485 serial communication buses;
an RS485A end of the SX1278 wireless module of the indoor check signal transmitter (FS) is connected with an end point B of the induction loop through a relay switch I (K1) and a relay switch II (K2) of a relay circuit breaking device (05), and an RS232 end of the indoor check signal transmitter is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor check signal receiver (JS) is connected with an end point A of an induction loop, an RS485B end of the S485A end is connected with an electromagnetic coil III (L3) of a relay III (J3) of the section occupation detection circuit (04), and an RS232 end of the S485A end is connected with a computer system;
an RS485A end of an SX1278 wireless module of the indoor train signal receiver I (NC 1) is connected with an end point A of the induction loop, an RS485B end of the indoor train signal receiver I is connected with an electromagnetic coil I (L1) of a relay I (J1) of the relay circuit breaker, and an RS232 end of the indoor train signal receiver I is connected with a computer system;
an RS485A end of an SX1278 wireless module of an indoor train signal receiver II (NC 2) is connected with an end point A of an induction loop, an RS485B end of the indoor train signal receiver II is connected with an electromagnetic coil II (L2) of a relay II (J2) of a relay circuit breaker, and an RS232 end of the indoor train signal receiver II is connected with a computer system;
the section occupation detection module (GZJC) is used for converting a switching signal of the relay III into a digital signal and sending the digital signal to the computer system, and the section occupation indication circuit (ZS) is used for displaying the occupation state of the section track;
the vehicle-mounted signal transmitter I (CF 1) is used for transmitting a signal that the train head enters the track section, and the vehicle-mounted signal transmitter II (CF 2) is used for transmitting a signal that the train tail enters the track section;
the indoor check signal transmitter (FS) is configured to transmit a check signal indicating whether the loop section is complete;
the indoor checking signal receiver (JS) is used for receiving the checking signal sent by the indoor checking signal sender and controlling the working state of the section occupation detection circuit according to the state of the checking signal;
the indoor train signal receiver I (NC 1) is used for receiving signals sent by the vehicle-mounted signal transmitter I (CF 1) when the train head enters the track section, and is connected with the indoor check transmitter (FS) through the induction loop end point B which is disconnected or connected by the relay circuit breaker;
the indoor train signal receiver II (NC 2) is used for receiving signals sent by the vehicle-mounted signal transmitter II (CF 2) when the train tail enters the track section, and is connected with the indoor check transmitter (FS) through the induction loop endpoint B by the relay circuit breaker;
the computer system functions as:
firstly, receiving an inspection signal of an indoor inspection signal receiver (JS);
secondly, detecting and displaying the working states of an indoor check signal transmitter (FS), a section occupation detection circuit (04), an indoor train signal receiver I (NC 1) and an indoor train signal receiver II (NC 2);
when the detection section occupies the working state of the detection circuit (04): when the section occupation detection module detects that a relay switch III (K3) of a relay III (J3) is sucked up, a code 1 is sent to a computer system, a section occupation indication circuit (ZS) is disconnected, and a display screen of the computer system displays a green light band corresponding to a circuit to indicate no vehicle occupation; when the section occupation detection module detects that a relay switch III (K3) of a relay III (J3) falls down, a code 0 is sent to the computer system, a section occupation indication circuit is connected, and a display screen of the computer system displays a red light band corresponding to a circuit to indicate that the vehicle is occupied.
2. The inductive loop-based rail transit positioning simulation system of claim 1, wherein:
the SX1278 wireless module is a multi-channel wireless module with both receiving and transmitting functions, where:
the indoor check signal transmitter (FS) and the indoor check signal receiver (JS) adopt a channel 1, the indoor train signal receiver I (NC 1) and the vehicle-mounted signal transmitter I (CF 1) adopt a channel 3, and the indoor train signal receiver II (NC 2) and the vehicle-mounted signal transmitter II (CF 2) adopt a channel 5;
the computer system is configured to: not lower than 32 bit processor and not lower than 2GB.
3. A rail transit positioning simulation demonstration method based on an induction loop is characterized by comprising the following steps of: the method for carrying out simulation demonstration by using the rail transit positioning simulation system based on the induction loop line comprises the following steps:
s1 track section no vehicle: the indoor train signal receiver I (NC 1) and the indoor train signal receiver II (NC 2) do not receive signals, the indoor check signal receiver (JS) receives an inspection signal which is sent by the indoor check signal transmitter (FS) and indicates that the loop line section is complete, the relay III (J3) of the section occupation detection circuit is driven to act, the relay switch III (K3) is sucked up, the section occupation indication circuit is disconnected, the computer system display screen displays a green light band corresponding to the line, and the fact that the track section is free of train occupation is indicated;
s2, when the headstock enters the track section: the indoor train signal receiver I (NC 1) receives a signal sent by the vehicle-mounted signal transmitter I (CF 1) through the sending antenna I (CFT 1), drives the relay I (J1) of the relay circuit breaking device to act, and the relay switch I (K1) is sucked and disconnected, so that the connection between the indoor checking signal transmitter (FS) and the endpoint B of the induction loop line is disconnected, the relay III (J3) of the section occupation detection circuit is demagnetized, the relay switch III (K3) falls, the section occupation indication circuit is connected, and the computer system display screen displays red light bands corresponding to lines to indicate that the track section is occupied by a train;
s3, when the tail enters the track section:
at this time, the train head and the train tail are both positioned in the track section, the indoor train signal receiver I (NC 1) receives a signal sent by the vehicle-mounted signal transmitter I (CF 1) through the sending antenna I (CFT 1), the relay I (J1) of the relay circuit breaker is driven to operate, the relay switch I (K1) is sucked and disconnected, the indoor train signal receiver II (NC 2) simultaneously receives a signal sent by the vehicle-mounted signal transmitter II (CF 2) through the sending antenna II (CFT 2), the relay II (J2) of the relay circuit breaker is driven to operate, the relay switch II (K2) is sucked and disconnected, the connection between the indoor check signal transmitter (FS) and the endpoint B of the induction loop is kept in a disconnected state, the relay III (J3) of the section occupation detection circuit is in a demagnetized state, the relay switch III (K3) is kept in a falling state, the section occupation indication circuit is kept on, and a corresponding circuit of the computer system display screen displays red light bands to indicate that the train still occupies the track section;
s4, when the locomotive goes out of the track section: the indoor train signal receiver I (NC 1) cannot receive the signal sent by the vehicle-mounted signal transmitter I (CF 1), the relay I (J1) of the relay circuit breaker is in a loss of magnetism, the relay switch I (K1) falls down to prepare an excitation relay III (J3) when the train goes out of clear, at the moment, the indoor train signal receiver II (NC 2) still can receive the signal sent by the vehicle-mounted signal transmitter II (CF 2), the relay II (J2) of the relay circuit breaker acts, the relay switch II (K2) continues to keep in a suction off state, the connection between the indoor check signal transmitter (FS) and the endpoint B of the induction loop is continuously kept in an off state, the relay III (J3) of the section occupation detection circuit is in a loss of magnetism, the relay switch III (K3) continues to keep in a falling state, the section occupation indication circuit continues to be on, and a corresponding circuit of the system display screen displays red, so that the train still occupies the track section;
s5, when the tail of the vehicle clears the section: the indoor train signal receiver I (NC 1) and the indoor train signal receiver II (NC 2) do not receive signals, the indoor check signal receiver (JS) receives check signals sent by the indoor check signal transmitter (FS), the loop line section is complete, the relay I (J1) and the relay II (J2) of the relay circuit breaking device are in demagnetizing state, the relay switch I (K1) and the relay switch II (K2) are connected with the end point B of the induction loop line by falling down, the relay III (J3) of the section occupation detection circuit is driven to act, the relay switch III (K3) is sucked up, the section occupation indication circuit is disconnected, the computer system display screen corresponds to a line display green light band, and no train occupation of a track section is indicated.
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| CN110187213B (en) * | 2019-06-19 | 2024-02-20 | 河南辉煌科技股份有限公司 | Rail circuit train operation simulation device |
| CN113129669B (en) * | 2019-12-31 | 2024-03-19 | 郑州畅想高科股份有限公司 | Interlocking teaching system and signal flow condition display method |
| CN113276912B (en) * | 2021-07-22 | 2021-10-26 | 北京全路通信信号研究设计院集团有限公司 | Train positioning method and system based on cross induction loop |
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