CN114655023B - Dark rail electric rail traffic system based on linear motor - Google Patents
Dark rail electric rail traffic system based on linear motor Download PDFInfo
- Publication number
- CN114655023B CN114655023B CN202210375496.5A CN202210375496A CN114655023B CN 114655023 B CN114655023 B CN 114655023B CN 202210375496 A CN202210375496 A CN 202210375496A CN 114655023 B CN114655023 B CN 114655023B
- Authority
- CN
- China
- Prior art keywords
- current
- magnetic
- loop
- track
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 24
- 239000004020 conductor Substances 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000005669 field effect Effects 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 3
- 230000003993 interaction Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/10—Combination of electric propulsion and magnetic suspension or levitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/02—Electric devices associated with track, e.g. rail contacts
- B61L1/08—Electric devices associated with track, e.g. rail contacts magnetically actuated; electrostatically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
- B61L5/067—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means using electromagnetic driving means
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a hidden track electric rail traffic system based on a linear motor, wherein each track consists of 4-6 magnetic yokes with the same length, width and height, a plurality of tracks can be laid in parallel, and a plurality of turns of loop-shaped wires are respectively wound on each magnetic yoke. The high-strength magnet and the magnetic yoke are arranged on the railway vehicle, the railway vehicle is driven to run forwards by controlling the conduction of current in the lead wire and utilizing the interaction force between the high-strength magnet and the electrified lead wire, and the lane change, the braking, the acceleration and the retreating of the railway vehicle are realized by controlling the conduction time, the current size and the current direction of the current in the lead wire, so that the railway vehicle can automatically correct the running speed and the running direction. The invention can greatly reduce the difficulty of speed change and direction change of the railway vehicle, improves the running efficiency of the railway vehicle, and is a practical railway paving and rail changing control method suitable for engineering.
Description
Technical Field
The invention belongs to the fields of traffic, electrical engineering, instrument science and technology and vehicle engineering, and particularly relates to a hidden track electric rail traffic system based on a linear motor.
Background
In recent years, with the continuous development of economic level in China and the rapid increase of urban population, traffic jam and other social problems have become important factors influencing urban sustainable development, light and convenient transportation tools are important tools for relieving traffic jam and accelerating urban development, the transportation tools working between cities are generally trains and subways nowadays, and the transportation tools working in factories in cities are generally cargo rail cars. The existing rail vehicles such as subways, trains, factory trucks and the like have the following three defects: firstly, the running rail is paved on the ground, so that manual timing maintenance is required at ordinary times, the cost is high, the steel rail is large in size and high in manufacturing cost, the occupied space is large, and the maintenance cost is increased; and secondly, the operations such as track changing and speed regulation cannot be independently completed, the existing rail-mounted transportation means run on two parallel steel rails and can only move forwards and backwards, and a turnout is needed to realize track changing. The turnout is an important device for realizing rail change, and consists of three units of a switcher, a connecting part, a frog and a guard rail, wherein when a wheel passes through the frog, a gap is formed between the narrowest part of two wing rails and the most tip of the frog, which is the harmful space of the turnout. When the wheel passes through the point, derailment may occur due to the misplaced frog grooves. The purpose of the guard rail is to strengthen the running direction of the guide wheels, however, the number of joints in the turnout area is large, the curve is complex, and the safety accident of the railway car is often high; thirdly, manual driving is needed, the position, the speed and the running direction of the rail car are controlled in real time, the running routes of trains, subways and factory trucks are generally fixed, drivers run on the same route for a long time, and driving fatigue is easy to generate by repeating the monotonic driving work, so that traffic accidents are caused.
In summary, the existing track is laid and occupies a large space, the maintenance cost is high, the turnout for realizing the track change control of the track vehicle has the defects of a large number, complex structure, short service life, low driving safety, large maintenance investment and the like in the use process, the safety and convenience of the track vehicle in operation are difficult to improve, once the track vehicle breaks down, the damage caused by line paralysis and error work is caused, the driving route of the track vehicle is generally fixed, and repeated monotonous driving tasks consume manpower, so that the driving fatigue of a driver is more easily caused to cause traffic accidents. In order to solve the problems, the invention provides a drive and control system (application number: 202110867708.7) of a hidden track electric rail car based on a linear motor, which enables the rail electric car to run on a road like the existing electric car and does not need a storage battery, but the rail car also needs manual real-time speed regulation and rail changing operation, cannot automatically run on a planned track in advance, and cannot receive data of various sensors on a road surface in real time to determine the position, the speed and the running direction of the rail car.
Disclosure of Invention
The invention aims to provide a hidden track electric rail traffic system based on a linear motor, which can realize automatic track changing, braking, acceleration and backing of a rail car, so that the rail car can automatically correct the running speed and the running direction, the working efficiency and the safety performance of the rail car can be greatly improved, and the automatic driving of the rail electric car can be realized by additionally arranging a comprehensive dispatching and control system and the driving route planning of the car on a track.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A hidden track electric rail traffic system based on a linear motor comprises a track design laying system and a track vehicle track change control system;
each track laying system comprises a magnetic sensor, a driving unit and a plurality of magnetic yoke units consisting of 4-6 magnetic yokes with the same length, width and height, wherein each driving unit comprises a driving module and a driving control module, a plurality of turns of loop-shaped wires are wound on each magnetic yoke to form a dark track, each loop-shaped wire unit is connected with one driving unit, and a current inflow end of each loop-shaped wire unit is provided with a freewheeling diode connected with the negative electrode of a direct current bus;
The track change control system of the railway vehicle controls the current direction and the current magnitude in the multi-turn loop-shaped wire by the driving unit so as to realize the functions of track change, braking, acceleration and retreating of the railway vehicle;
The driving control module comprises a microprocessor and a wireless signal receiving and transmitting device, the wireless signal receiving and transmitting device receives commands of a user for changing channels, braking, accelerating and retreating the railway vehicle in real time, the microprocessor trains a large amount of running data of the railway vehicle in advance, and the microprocessor controls the driving module to act by combining the commands sent by the user through the wireless receiving and transmitting device, the speed measurement value of the magnetic sensor on the last magnetic yoke unit and the output value of the magnetic sensor on the magnetic yoke unit in real time during actual running, so that current in the multi-turn loop-shaped lead is changed, and the running state of the railway vehicle is controlled.
The invention is further improved in that the width of the magnetic yoke unit is 10-40cm wider than that of the upper magnetic yoke of the railway vehicle, the sectional area of the magnetic yoke unit can ensure that the railway vehicle can not generate magnetic saturation when passing through, and the magnetic resistance of a magnetic circuit formed by a magnet on the railway vehicle is reduced when the railway vehicle passes through.
The invention further improves that the hidden track is composed of a plurality of turns of loop-shaped wires on a magnetic yoke, the plurality of turns of loop-shaped wires are made of enameled wires or wires with insulating layers on the outer layers, the turns are 5-200 turns, the loop-shaped wires are fixed on the magnetic yoke of the track, the loop-shaped wires are paved along the extending direction of the track, the distance between the loop-shaped wires and the center of two high-strength magnets on the track is equal, 4-6 turns of loop-shaped wires on the same magnetic yoke unit are paved on the same straight line along the transverse direction of the track and are in close contact but insulated with each other, and the centers of the loop-shaped wires are overlapped with the centers of the corresponding magnetic yokes.
The invention is further improved in that the magnetic sensor is a magneto resistor, a giant magneto resistor or a Hall type magnetic sensor, can sense the magnetic induction intensity of a magnetic field and can sense the direction of the magnetic field, each two magnetic sensors form a sensor pair, the distance between the two sensor pairs is equal to the center distance between two high-strength magnets of the railway car, the two sensor pairs are placed at the center of a magnetic yoke unit, and each sensor pair corresponds to one magnetic yoke unit.
The invention further improves that the driving module consists of a solid state relay or MOSFET tube, a resistor, a capacitor, a reverse diode and a current sensor, wherein the four solid state relays or MOSFET tubes form a current reversing module, the output end of the current reversing module is connected with a multi-turn loop-shaped wire and the current sensor, the input end of the current reversing module is connected with a DC power grid bus, the current reversing module is connected with a resistor, a capacitor and the reverse diode for protection in parallel, the driving module works under the control of the driving control module, one magnetic sensor senses that a magnetic field reaches more than a threshold value, namely the driving module can be triggered, the threshold value is set to be 1/5-4/5 of the magnetic induction intensity when a railway car passes, and the current sensor can sense the current in the multi-turn loop-shaped wire, and if the current exceeds a preset value, a warning is sent.
The invention is further improved in that when the track car normally runs forwards, the currents on the loop-shaped conductors on the two sides of the yoke units forming the track are equal, the currents in the loop-shaped conductors on the middle yoke are equal, the currents in the loop-shaped conductors on the two sides of the yoke are 10% -30% greater than the currents in the loop-shaped conductors on the middle yoke, but no magnetic saturation occurs in the yoke, so that the track car can run forwards along the track.
The invention is further improved in that the current direction in the multi-turn loop wire is controlled by the driving unit to realize the functions of lane changing, braking, accelerating and backing of the railway vehicle, if the railway vehicle is going from east to west, the high-strength magnet north pole of the vehicle head is downward, then the current direction of all the multi-turn loop wires under the magnet is from north to south, the current of the north-most wire is increased or the current of the south-most wire is reduced to enable the railway vehicle to deviate from west to south, and the current of the south-most wire is increased or the current of the north-most wire is reduced to enable the railway vehicle to deviate from west to north.
The invention is further improved in that the acceleration of the railway car is realized by increasing the current of all multi-turn loop wires of the magnetic yoke unit right below the railway car; the speed reduction of the railway car is realized by changing the current flowing into the multi-turn wire from the DC power grid bus to flow into the DC power grid bus through the current reversing module in the driving module, and the multi-turn wire and the high-energy magnet on the railway car form a generator; the track car is retracted by changing the current direction of all the multi-turn loop wires under the magnets from the south to the north.
The invention is further improved in that the magnitude of the current in the return conductor is controlled by the duty cycle of the current on-time; when acceleration is needed, the loop-shaped wire is cut into a bus, and the bus voltage increases the current in the loop-shaped wire; when the current reaches the upper limit, the loop-shaped wire is disconnected from the bus by controlling the MOSFET tube or the solid state relay, and the current in the wire freewheels through the freewheeling diode.
The invention has at least the following beneficial technical effects:
The hidden track electric rail traffic system based on the linear motor does not need to lay rails, does not occupy space, does not consume manpower and material resources to maintain the rails, has simple structure, is not easy to fail, has low manufacturing cost and can be laid in a large area; the track change is realized by changing the magnitude and direction of current in the multi-turn loop wire without using special equipment such as turnout and the like, so that the track change, braking, acceleration, retreating and the like are realized more conveniently and rapidly, the complexity of the track structure can be greatly reduced, the service life and the safety performance of the track are improved, and the maintenance cost of the track is further reduced; the rail car microprocessor can train with a large amount of running data in advance, and can comprehensively determine the position, the speed and the running direction of the rail car by combining the command sent by a user through the wireless transceiver and the data of each sensor on the road during actual running, so that the automatic lane changing and speed regulating of the rail car are realized, and the unmanned effect is achieved.
Drawings
Fig. 1 is a schematic diagram of a yoke unit structure;
FIG. 2 is a schematic diagram of a current commutation cell connected to a multi-turn loop wire;
FIG. 3 is a graph of magnetic sensor output signals as a railcar passes by;
Fig. 4 is a flow chart of the shifting and the shifting.
Reference numerals illustrate:
1-a magnetic yoke; 2-a multiturn wire; 3—a first solid state relay or MOSFET tube; 4-a second solid state relay or MOSFET tube; 5—a third solid state relay or MOSFET tube; 6-fourth solid state relay or MOSFET tube.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 3, the invention provides a hidden track electric rail traffic system based on a linear motor, which comprises a track laying system and a track transferring control system. The track laying system comprises a plurality of magnet yoke units consisting of 4 magnet yokes 1 with the same length, width and height, a magnetic sensor and a driving unit, wherein each driving unit comprises a driving module and a driving control module, a plurality of turns of loop-shaped wires 2 are wound on each magnet yoke 1 to form a dark track, and each plurality of turns of loop-shaped wires 2 are connected with one driving unit. The schematic structure of the yoke unit is shown in fig. 1.
The hidden track is composed of a plurality of turns of loop-shaped wires 2 on a magnetic yoke 1, the plurality of turns of loop-shaped wires 2 are made of enameled wires or other wires with insulating layers on the outer layers, the turns are 5-200 turns, the loop-shaped wires are fixed on the magnetic yoke 1, the loop-shaped wires are paved along the extending direction of the track, the distance between the loop-shaped wires is equal to the center distance between two high-strength magnets on a railway car, 4 turns of loop-shaped wires 2 on the same magnetic yoke unit are paved on the same straight line along the transverse direction of the track and are in close contact with but insulated from each other, and the centers of the plurality of turns of loop-shaped wires 2 are coincident with the center of the magnetic yoke 1. Each multi-turn wire 2 is connected with an output end of a current reversing module, and an input end of the current reversing module is connected with a direct current bus, so that the magnitude and the direction of current in the multi-turn wire 2 can be controlled through the current reversing module, and then the track change and the speed change of the railway car are controlled. For example, the first solid state relay or the MOSFET 3, the third solid state relay or the MOSFET 6 are closed 5 by driving the control module, the second solid state relay or the MOSFET 4 and the fourth solid state relay or the MOSFET 6 are opened, and then the current in the multi-turn loop-shaped wire 2 flows anticlockwise; the second solid state relay or MOSFET 4 and the fourth solid state relay or MOSFET 6 are closed by driving the control module, the first solid state relay or MOSFET 3 and the third solid state relay or MOSFET 5 are opened, and then the current in the multi-turn loop-shaped lead 2 flows clockwise. As shown in fig. 2.
The magnetic sensor is a magneto resistor, a giant magneto resistor or a Hall type magnetic sensor, can sense the magnetic induction intensity of a magnetic field and sense the direction of the magnetic field, each two magnetic sensors form a sensor pair, the distance between the two sensor pairs is equal to the center distance between two high-strength magnets of the railway car, the two sensor pairs are placed at the center of the magnetic yoke unit, and each sensor pair corresponds to one magnetic yoke unit. The output signal of the magnetic sensor is approximately trapezoidal wave, the height is magnetic induction intensity B, the horizontal axis is time t, and the width d of the high-strength magnet is divided by Δt to obtain the vehicle speed v by measuring the half width Δt of the trapezoidal wave. As shown in fig. 3.
The driving control module comprises a microprocessor and a wireless signal receiving and transmitting device, wherein the wireless signal receiving and transmitting device is used for receiving commands of a user for changing a track, braking, accelerating, retreating and the like of the railway vehicle, the microprocessor trains a large amount of railway vehicle driving data in advance, the operation of the railway vehicle can be automatically controlled on a fixed railway, meanwhile, the commands sent by the user through the wireless receiving and transmitting device, the speed measurement value of a magnetic sensor on a last magnetic yoke unit and the output value of the magnetic sensor on the magnetic yoke unit are read in real time, the speed regulation and track change strategy of the railway vehicle is planned by combining the actual operation condition of the railway vehicle, when the railway vehicle drives through, the output signal of the magnetic sensor is increased until the output signal is larger than a preset threshold value, the driving module can be triggered, if the wireless receiving the track change signal at the moment, the current in a corresponding side wire is increased to a track change set value to realize track change, if the track change signal is not received, the railway vehicle normally operates until the railway vehicle drives away from the magnetic yoke unit, and finally the driving unit is stopped. As shown in fig. 4.
Examples
The embodiment combines the schematic diagram of the magnetic yoke unit structure of fig. 1, the schematic diagram of the connection of the current reversing unit and the multi-turn loop-shaped wire of fig. 2, the magnetic sensor output signal diagram of the passing rail car of fig. 3, and the track-changing and speed-changing flow chart of fig. 4 to briefly illustrate the implementation process.
The size of a magnetic yoke unit of the hidden track electric rail transit system based on the linear motor is matched with that of a rail car and high-energy magnets on the rail car, and the magnetic yoke unit can be formed by 4 magnetic yokes of 30cm multiplied by 80cm multiplied by 5cm under the condition that the sizes of two high-energy magnets on the rail car are 80cm multiplied by 40cm and the distances between the two magnets are 40cm, a plurality of magnetic yoke units are spliced in the radial direction, a plurality of loops of loop-shaped wires are wound according to a figure, 20 loops of each unit are arranged, the outer layer of each wire is a halogen-free flame-retardant high-temperature-resistant insulating rubber sleeve, and each loop-shaped wire is mutually insulated.
The driving control module is composed of an STM32F429IGT6 microprocessor and an ESP8266 wireless signal receiving and transmitting device, the ESP8266 wireless signal receiving and transmitting device is used for receiving a command of a user for rail changing or speed changing of the rail car, the STM32F429IGT6 microprocessor is used for training a large amount of rail car driving data in advance, the command received by the ESP8266 wireless receiving and transmitting device, a magnetic sensor speed measurement value on a last magnetic yoke unit and a magnetic sensor output value on the magnetic yoke unit are read in real time in actual operation, meanwhile, a sensor on a comprehensive road determines the position, the speed and the driving direction of the rail car, the magnetic sensor output signal increases until the magnetic sensor output signal is larger than a preset threshold value when the rail car drives, the driving module can be triggered, the driving module is composed of a solid state relay, a resistor, a capacitor, a reverse diode and a current sensor, the output end of the four solid state relays are connected with a multi-turn wire and the current sensor, the input end of the current module is connected with a DC power grid bus in parallel, and the current module is connected with the multi-turn wire and the DC power grid bus as shown in figure 2. In the process of passing of the railway vehicle, the waveform of the output signal of the magnetic sensor is shown in fig. 3, one of the magnetic sensor pair senses that the magnetic field reaches more than a threshold value, namely the driving module can be triggered, the threshold value is set to be 1/5-4/5 of the magnetic induction intensity when the railway vehicle passes, the current sensor can sense the current in the multi-turn loop wire, if the current exceeds a preset value, a warning is sent, and the current preset value is 20A. At this time, if the wireless receiving and transmitting signal receives the track change signal, the current in the corresponding side wire is increased to the track change set value to realize track change, if the track change signal is not received, the track is normally operated until the track car is driven away from the magnetic yoke unit, and finally, the triggering driving unit is stopped, as shown in fig. 4.
The foregoing is a further detailed description of the invention in connection with specific embodiments. It should be noted that the present invention is not limited to the specific embodiments, and it is obvious to those skilled in the art that several deductions and extensions can be made without departing from the concept of the present invention, but the present invention should be considered as the scope of the patent protection defined by the claims filed below.
Claims (5)
1. The hidden track electric rail traffic system based on the linear motor is characterized by comprising a track laying system and a track vehicle track transfer control system;
each track laying system comprises a magnetic sensor, a driving unit and a plurality of magnetic yoke units consisting of 4-6 magnetic yokes with the same length, width and height, wherein each driving unit comprises a driving module and a driving control module, a plurality of turns of loop-shaped wires are wound on each magnetic yoke to form a dark track, each loop-shaped wire unit is connected with one driving unit, and a current inflow end of each loop-shaped wire unit is provided with a freewheeling diode connected with the negative electrode of a direct current bus;
The track change control system of the railway vehicle controls the current direction and the current magnitude in the multi-turn loop-shaped wire by the driving unit so as to realize the functions of track change, braking, acceleration and retreating of the railway vehicle;
The driving control module comprises a microprocessor and a wireless signal transceiver, the wireless signal transceiver receives commands of a user for changing channels, braking, accelerating and retreating the railway vehicle in real time, the microprocessor trains a large amount of running data of the railway vehicle in advance, and the microprocessor controls the driving module to act by combining the commands sent by the user through the wireless transceiver, the speed measurement value of a magnetic sensor on a previous magnetic yoke unit and the output value of the magnetic sensor on the magnetic yoke unit in real time during actual running, so that current in a multi-turn loop-shaped lead is changed, and the running state of the railway vehicle is controlled;
The width of the magnetic yoke unit is 10-40cm wider than that of the magnetic yoke on the railway car, the sectional area of the magnetic yoke unit can ensure that the railway car can not generate magnetic saturation when passing through, and the magnetic yoke unit is used for reducing the magnetic resistance of a magnetic circuit formed by a high-strength magnet on the railway car when the railway car passes through;
The hidden track is composed of a plurality of turns of loop-shaped wires on a magnetic yoke, the plurality of turns of loop-shaped wires are made of enameled wires or wires with insulating layers on the outer layers, the turns are 5-200 turns, the loop-shaped wires are fixed on the magnetic yoke of the track, the loop-shaped wires are paved along the extending direction of the track, the distance between the loop-shaped wires and the center of two high-strength magnets on the railcar is equal, 4-6 turns of loop-shaped wires on the same magnetic yoke unit are paved on the same straight line along the transverse direction of the track and are closely contacted with each other but are insulated from each other, and the centers of the loop-shaped wires are overlapped with the centers of the corresponding magnetic yokes;
The magnetic sensors are magneto-resistors, giant magneto-resistances or Hall type magnetic sensors, can sense the magnetic induction intensity of a magnetic field and sense the direction of the magnetic field, each two magnetic sensors form a sensor pair, the distance between the two sensor pairs is equal to the center distance between two high-strength magnets of the railway car, the two sensor pairs are placed at the center of a magnetic yoke unit, and each sensor pair corresponds to one magnetic yoke unit;
The current direction in the multi-turn loop wire is controlled by the driving unit to realize the functions of lane changing, braking, accelerating and backing of the railway vehicle, if the railway vehicle is to run from east to west, the north pole of the high-strength magnet of the vehicle head is downward, all the multi-turn loop wire under the magnet is from north to south, the current of the north-most wire is increased or the current of the south-most wire is reduced to enable the railway vehicle to deviate from west to south, and the current of the south-most wire is increased or the current of the north-most wire is reduced to enable the railway vehicle to deviate from west to north.
2. The hidden rail electric rail traffic system based on the linear motor according to claim 1, wherein the driving module is composed of a solid state relay resistor, a capacitor, a reverse diode and a current sensor, or the driving module is composed of a MOSFET (metal oxide semiconductor field effect transistor), a resistor, a capacitor, a reverse diode and a current sensor, the four solid state relays or the MOSFET constitute a current reversing module, the output end of the four solid state relays or the MOSFET constitutes a current reversing module, the output end of the four solid state relays or the MOSFET is connected with a multi-turn wire and the current sensor, the input end of the four solid state relays or the MOSFET is connected with a DC power grid bus, the input end of the four solid state relays or the MOSFET is connected with a resistor, the capacitor and the reverse diode for protection in parallel, the driving module works under the control of the driving control module, one magnetic sensor senses that a magnetic field reaches more than a threshold value, namely the driving module can be triggered, the threshold value is set to be 1/5-4/5 of magnetic induction intensity when the rail car passes, and the current sensor can sense the current in the multi-turn wire, and a warning is sent if the current exceeds a preset value.
3. The hidden rail electric rail transit system based on the linear motor according to claim 1, wherein when the rail car normally runs forward, currents on the loop conductors on two sides of the yoke units forming the rail are equal, currents on the loop conductors on the middle yoke are equal, currents on the loop conductors on two sides of the rail are 10% -30% greater than those on the loop conductors on the middle yoke, and no magnetic saturation occurs in the yoke, so that the rail car can run forward along the rail.
4. The dark rail electric rail transit system based on the linear motor according to claim 1, wherein the acceleration of the rail car is realized by increasing the current of all multi-turn loop conductors of the yoke unit right below the rail car; the speed reduction of the railway car is realized by changing the current flowing into the multi-turn wire from the DC power grid bus to flow into the DC power grid bus through the current reversing module in the driving module, and the multi-turn wire and the high-strength magnet on the railway car form a generator.
5. The dark rail electric rail transit system based on the linear motor of claim 2, wherein the magnitude of the current in the return conductor is controlled by the duty cycle of the current on time; when acceleration is needed, the loop-shaped wire is cut into a bus, and the bus voltage increases the current in the loop-shaped wire; when the current reaches the upper limit, the loop-shaped wire is disconnected from the bus by controlling the MOSFET tube or the solid state relay, and the current in the wire freewheels through the freewheeling diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375496.5A CN114655023B (en) | 2022-04-11 | 2022-04-11 | Dark rail electric rail traffic system based on linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375496.5A CN114655023B (en) | 2022-04-11 | 2022-04-11 | Dark rail electric rail traffic system based on linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114655023A CN114655023A (en) | 2022-06-24 |
| CN114655023B true CN114655023B (en) | 2024-05-24 |
Family
ID=82035259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210375496.5A Active CN114655023B (en) | 2022-04-11 | 2022-04-11 | Dark rail electric rail traffic system based on linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114655023B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995035221A1 (en) * | 1994-06-21 | 1995-12-28 | In Ki Kim | Switch system for personal rapid transit |
| JPH0847112A (en) * | 1995-07-24 | 1996-02-16 | Toshiba Corp | Levitation type conveyor |
| CN105818819A (en) * | 2016-03-31 | 2016-08-03 | 北京航天控制仪器研究所 | Double-closed-magnetic-circuit bend electromagnetic track transfer guide device and method |
| KR20160143992A (en) * | 2015-06-05 | 2016-12-15 | 한국철도기술연구원 | Two-phase and two-row linear motor propulsion system equipped with |
| CN108720464A (en) * | 2018-06-21 | 2018-11-02 | 深圳市触品科技有限公司 | A kind of automatically vending system of unmanned convenience store |
| CN112356681A (en) * | 2020-12-04 | 2021-02-12 | 桂林电子科技大学 | Power system of hydrogen energy powered magnetic levitation trolley and control method thereof |
| CN113715851A (en) * | 2021-07-28 | 2021-11-30 | 西安交通大学 | Dark track electric rail car drive and control system based on linear electric motor |
| CN216070001U (en) * | 2021-11-15 | 2022-03-18 | 武汉铁路职业技术学院 | Switch-squeezing-proof switch for railway |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7788000B1 (en) * | 2009-02-17 | 2010-08-31 | Davis Jr William D | Public highway system |
-
2022
- 2022-04-11 CN CN202210375496.5A patent/CN114655023B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995035221A1 (en) * | 1994-06-21 | 1995-12-28 | In Ki Kim | Switch system for personal rapid transit |
| JPH0847112A (en) * | 1995-07-24 | 1996-02-16 | Toshiba Corp | Levitation type conveyor |
| KR20160143992A (en) * | 2015-06-05 | 2016-12-15 | 한국철도기술연구원 | Two-phase and two-row linear motor propulsion system equipped with |
| CN105818819A (en) * | 2016-03-31 | 2016-08-03 | 北京航天控制仪器研究所 | Double-closed-magnetic-circuit bend electromagnetic track transfer guide device and method |
| CN108720464A (en) * | 2018-06-21 | 2018-11-02 | 深圳市触品科技有限公司 | A kind of automatically vending system of unmanned convenience store |
| CN112356681A (en) * | 2020-12-04 | 2021-02-12 | 桂林电子科技大学 | Power system of hydrogen energy powered magnetic levitation trolley and control method thereof |
| CN113715851A (en) * | 2021-07-28 | 2021-11-30 | 西安交通大学 | Dark track electric rail car drive and control system based on linear electric motor |
| CN216070001U (en) * | 2021-11-15 | 2022-03-18 | 武汉铁路职业技术学院 | Switch-squeezing-proof switch for railway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114655023A (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ono et al. | Japan's superconducting Maglev train | |
| Miller et al. | ORNL experience and challenges facing dynamic wireless power charging of EV's | |
| US8590682B2 (en) | Transferring electric energy to a vehicle | |
| US5277285A (en) | Electrical vehicle transporation system | |
| US8827058B2 (en) | Inductively receiving electric energy for a vehicle | |
| AU2009265944B2 (en) | System and method for transferring electric energy to a vehicle | |
| CN107161034B (en) | A kind of power supply system of magnetic suspension train | |
| CN109952242B (en) | Vehicle-mounted control system of high-speed maglev train | |
| US20150231989A1 (en) | Two-phase two-column linear pulse motor propulsion system | |
| US5134254A (en) | Electrical vehicle transportation system | |
| CA3042261A1 (en) | Electronic current collector for vehicles | |
| CN114655023B (en) | Dark rail electric rail traffic system based on linear motor | |
| CN102923011A (en) | Double-energy power range-increasing type trolley bus | |
| KR101498888B1 (en) | Position detecting device for two-phase and two-row linear motor propulsion system | |
| CN105186709A (en) | Magnetic pole winding type T-shaped power supply track applied to wireless power supply of electric cars | |
| CN101934745B (en) | Position sensor for electrified railway vehicles | |
| CN113715851A (en) | Dark track electric rail car drive and control system based on linear electric motor | |
| CN103465802A (en) | Electric phase separation self-actuated switching control device used for pantograph passing neutral section | |
| CN113479069B (en) | Bilateral series power supply system and method for high-speed magnetic levitation traffic | |
| CN104709117A (en) | Automatic switching controlling device of two neutral sections for electrified neutral section passing of locomotive | |
| CN111890945B (en) | Traction control system of medium-high speed maglev train | |
| CN210262544U (en) | Steering system for point-to-point unmanned traffic transportation system | |
| KR101313624B1 (en) | DC linear propulsion system for a railway | |
| CN106864467B (en) | A kind of traffic system on track road surface and ground intercommunication | |
| CN111483323A (en) | Rail transit non-contact power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |