CN113370790A - Tramcar pantograph control method, system and control circuit - Google Patents
Tramcar pantograph control method, system and control circuit Download PDFInfo
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- CN113370790A CN113370790A CN202110747819.4A CN202110747819A CN113370790A CN 113370790 A CN113370790 A CN 113370790A CN 202110747819 A CN202110747819 A CN 202110747819A CN 113370790 A CN113370790 A CN 113370790A
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- pantograph
- beacon
- relay
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- tramcar
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- 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
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention provides a method, a system and a control circuit for controlling a pantograph of a tramcar, wherein the technical scheme of the method comprises the steps of arranging a PLC (programmable logic controller) and an RFID (radio frequency identification) reader in the tramcar, diagnosing the PLC and the RFID reader after the PLC and the RFID reader establish data communication, and controlling the pantograph of the tramcar through an automatic mode if the diagnosis is normal; arranging a beacon under a track of the tramcar, identifying and reading the beacon through an RFID reader in the running process of the tramcar, transmitting data in the beacon to a PLC (programmable logic controller) when the RFID reader reads the beacon, and judging the data through the PLC; if the PLC judges that the beacon is a pantograph lowering beacon according to the data, a pantograph lowering signal is sent out, the pantograph lowering relay is controlled to be powered on, and a pantograph lowering instruction is executed; if the beacon is a pantograph lifting beacon, a pantograph lifting signal is sent out, the pantograph lifting relay is controlled to be electrified, and a pantograph lifting instruction is executed. The pantograph control method solves the problems of low efficiency and operation danger of the existing pantograph control method.
Description
Technical Field
The invention belongs to the technical field of tramcars, and particularly relates to a tramcar pantograph control method, a tramcar pantograph control system and a tramcar pantograph control circuit.
Background
With the rapid development of urban rail transit, tramcars are more and more popular at home and abroad, and become common transportation means frequently selected for citizens to go out due to unique advantages. The power supply modes of the tramcar can be divided into three categories, namely, power supply of a contact net, power supply of vehicle-mounted energy storage and power supply of the ground, wherein the power supply of the contact net is most traditional and common. The tramcar powered by a contact net needs to control the pantograph of the tramcar to lift and lower the pantograph in the electric principle control of the train, a control method usually adopts a button or a switch to carry out manual operation control, and the button switch is arranged on a driver table and is convenient for a driver to operate.
The pantograph is arranged on the roof, for example, a 5-marshalling tramcar, a set of pantograph is usually arranged on the top of an intermediate vehicle, the pantograph acquires electric energy from a contact network after rising the pantograph to supply power for a high-voltage system of the train, and the electric energy supplies power for each system device of the train after passing through the high-voltage system, a traction system and an auxiliary system device to provide power electric energy for the train, so that the pantograph is used as a source of electric energy of the whole train, and is particularly important for efficient, safe and reliable control of the electric energy.
The system mainly comprises intersections between tramcar lines and urban roads, special road sections such as overpasses or bridge openings exist in part of the lines, the height of part of the road sections is lower than the pantograph lifting height of a train, for safety and landscape requirements, the road sections have the condition that contact networks are not erected, the vehicle often adopts super capacitors to supply power in a short time when passing through the special road sections, the pantograph needs to be lowered, the pantograph needs to be lifted after the vehicle enters the contact network road sections, the control on the pantograph can be realized only through manual operation after parking, the line crossing risk exists when the vehicle parks on the line, and the operation efficiency is greatly reduced.
Disclosure of Invention
The embodiment of the application provides a control method, a system and a control circuit for a pantograph of a tramcar, and aims to at least solve the problems of low efficiency and operation danger of the existing pantograph control method.
In a first aspect, an embodiment of the present application provides a method for controlling a pantograph of a tramcar, including: a control mode judging step, namely arranging a PLC and an RFID reader in a tramcar, diagnosing the PLC and the RFID reader after the PLC and the RFID reader establish data communication, and controlling a pantograph of the tramcar through an automatic mode if the diagnosis is normal; a beacon reading and transmitting step, namely setting a beacon under a track of the tramcar, identifying and reading the beacon through the RFID reader in the running process of the tramcar, transmitting data in the beacon to the PLC when the RFID reader reads the beacon, and judging the data through the PLC; a pantograph operation determining step, wherein if the PLC judges that the beacon is a pantograph lowering beacon according to the data, a pantograph lowering signal is sent out, a pantograph lowering relay is controlled to be powered on, and a pantograph lowering instruction is executed; and if the beacon is a pantograph lifting beacon, sending a pantograph lifting signal, controlling a pantograph lifting relay to be electrified and executing a pantograph lifting instruction.
Preferably, the method further comprises a manual operation control step of: and if the diagnosis of the PLC and the RFID reader is abnormal, controlling a pantograph of the tramcar through a manual mode, shielding the beacon identified by the RFID reader, and controlling the pantograph through a manual command.
Preferably, the method further comprises a control data recording step of: and storing the data of the beacon and the control process data of the pantograph in the automatic mode on an internal memory in the PLC in a csv format in real time, and analyzing the data.
In a second aspect, an embodiment of the present application provides a pantograph control system for a tramcar, which is applied to the above-mentioned pantograph control method for the tramcar, and includes: the vehicle-mounted equipment comprises a PLC (programmable logic controller) arranged on the tramcar and an RFID (radio frequency identification) reader arranged at the bottom of the tramcar, wherein the PLC and the RFID reader are diagnosed after establishing data communication, and if the diagnosis is normal, a pantograph of the tramcar is controlled in an automatic mode; the ground equipment comprises a beacon arranged under the track ground of the tramcar, the beacon is identified and read by the RFID reader in the running process of the tramcar, when the RFID reader reads the beacon, data in the beacon is transmitted to the PLC, and the data is judged by the PLC; the encoding equipment comprises a handheld reader-writer, an ID code is compiled for each beacon through the handheld reader-writer, the beacon transmits the ID code modulation signal in the memory to a receiving antenna of the RFID reader through a built-in antenna, and the data information interaction between the RFID reader and the beacon is realized after the ID code modulation signal is demodulated and decoded by a signal processing unit in the RFID reader; the vehicle-mounted equipment further comprises a pantograph ascending relay and a pantograph descending relay, and if the PLC judges that the beacon is a pantograph descending beacon according to the data, the PLC sends a pantograph descending signal to control the pantograph descending relay to be electrified and execute a pantograph descending instruction; and if the beacon is a pantograph lifting beacon, sending a pantograph lifting signal, controlling a pantograph lifting relay to be electrified and executing a pantograph lifting instruction.
In some embodiments, the vehicle-mounted device further comprises a control button, and if diagnosis of the PLC and the RFID reader is abnormal, the control button controls a pantograph of the tram in a manual mode, shields the beacon identified by the RFID reader, and sends a manual command to control the pantograph.
In some of these embodiments, the data for the beacon in the automatic mode and the control process data for the pantograph are saved in real time on internal memory in the PLC in a csv format and data analysis is performed.
In a third aspect, an embodiment of the present application provides a pantograph control circuit for a tramcar, which is applied to the above-mentioned pantograph control method for the tramcar, and includes: the circuit breaker is used for supplying power to the pantograph control circuit and the equipment;
the mode selection switch is used for selecting the pantograph control mode, and the normally open contacts of the mode selection switch represent an automatic mode when being closed, and the number of the normally open contacts is at least two;
the RFID system comprises a PLC controller and an RFID reader, and the RFID reader and the PLC controller are powered by the circuit breaker; the main control relay is activated by the tramcar driver controller key to obtain electricity, and the normally open contact of the main control relay is closed to represent the activation of the tramcar main control; a pantograph position relay, wherein when a transfer switch in a high-voltage box of the tramcar is switched to a pantograph position, the power is obtained, a normally open contact of the pantograph position relay is closed to represent that the transfer switch is at the pantograph position, the contacts at least comprise two pairs of normally open contacts, the pantograph can be controlled only when the pantograph position is reached, and the pantograph position relay is not powered when the tramcar position or the ground position is reached; the pantograph lifting relay is electrified when outputting a pantograph lifting request signal, the contacts of the pantograph lifting relay at least comprise a pair of normally open contacts and a pair of normally closed contacts, and the pantograph lifting relay is controlled by a PLC (programmable logic controller) in the tramcar in the automatic mode; and a pantograph relay which is energized when outputting a pantograph request signal, the contacts of the pantograph relay include at least a pair of the normally open contacts and a pair of the normally closed contacts, and the pantograph relay is controlled by the PLC controller in the tramcar in the automatic mode.
In some of these embodiments, the circuit further comprises: the pantograph lifting button and the pantograph lowering button are used for carrying out pantograph lifting and pantograph lowering operations in a manual mode, normally open contacts of the pantograph lifting button and the pantograph lowering button are closed and represent that the buttons are pressed down, and at least one pair of normally open contacts is arranged.
In some of these embodiments, the mode selection switch normally closed contacts, when closed, represent the manual mode, the normally closed contacts being at least two pairs; the pantograph raising relay and pantograph lowering relay are controlled by the pantograph raising button and pantograph lowering button in the manual mode.
In some of these embodiments, the circuit further comprises: the pantograph lifting and positioning relay is used for obtaining electricity after the pantograph lifting and positioning are carried out, the contacts of the pantograph lifting and positioning relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lifting is finished; the pantograph lowering in-place relay is used for obtaining electricity after the pantograph lowering is executed to be in place, the contacts of the pantograph lowering in-place relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lowering is finished; the pantograph lifting button lamp is used for indicating the pantograph lifting state of the pantograph and is lightened after the pantograph is lifted to the position; the pantograph descending button lamp is used for indicating the pantograph descending state of the pantograph and is lightened after the pantograph descending is in place; and the network system RIOM host collects DI signals of the pantograph ascending position, pantograph descending position and RFID system equipment state, and is used for transmitting the DI signals to a network display screen for state display and reminding.
Compared with the related technology, the embodiment of the application discloses an automatic control method for realizing pantograph lifting and pantograph lowering through an RFID technology on the basis of keeping a traditional manual control mode, the RFID technology is applied to the field of train electrical control, the automatic control of pantograph lifting and pantograph lowering functions is realized through positioning the position of a train through a radio frequency identification technology under the condition that the train does not stop, the technical problems of low automation degree, low efficiency and insufficient safety caused by the fact that the tramcar needs to frequently control the pantograph on a running circuit in a contact net and super capacitor hybrid power supply mode due to special line conditions are solved, the running efficiency and the safety of the tramcar are greatly improved through the design scheme, the intelligent level of the train is improved, and the reliability and the safety of a pantograph control circuit are guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method for controlling a pantograph of a tramcar according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a pantograph control method for a tramcar according to the present invention;
FIG. 3 is a block diagram of a railcar pantograph control system of the present invention;
FIG. 4 is a circuit diagram of a pantograph control circuit of the tramcar according to the present invention;
in the above figures:
1. an in-vehicle device; 2. ground equipment; 3. an encoding device; 11. a control button; 12. a PLC controller; 13. an RFID reader; 14. a pantograph lifting relay; 15. a bow-reducing relay; 21. a ground beacon; 31. a handwriting reader-writer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Embodiments of the invention are described in detail below with reference to the accompanying drawings:
fig. 1 is a flowchart of a method for controlling a pantograph of a tramcar according to the present invention, please refer to fig. 1, fig. 2 is a schematic diagram of an implementation of the method for controlling a pantograph of a tramcar according to the present invention, and please refer to fig. 2, the method for controlling a pantograph of a tramcar according to the present invention includes the following steps:
s1: the method comprises the steps that a PLC and an RFID reader are arranged in a tramcar, after data communication is established between the PLC and the RFID reader, the PLC and the RFID reader are diagnosed, and if the diagnosis is normal, a pantograph of the tramcar is controlled through an automatic mode.
In specific implementation, after the system is powered on, the control of the pantograph is carried out when a train master control key is activated and a change-over switch in a high-voltage box is at the position of the pantograph, the PLC and an RFID reader carry out diagnosis and self-inspection after data communication is established between the PLC and the reader, and a driver turns on an automatic position of a pantograph control mode switch to enter an automatic control mode after the working state of equipment is normal.
S2: the method comprises the steps that a beacon is arranged under a track of the tramcar, the beacon is identified and read through the RFID reader in the running process of the tramcar, when the RFID reader reads the beacon, data in the beacon are transmitted to the PLC, and the data are judged through the PLC.
In a specific implementation, after the system enters the automatic mode, the PLC automatically sends a beacon reading instruction to enable the RFID reader to enter the beacon reading mode. When the train runs on the line and the beacon is detected, the RFID reader collects the coding information stored in the bow-lowering beacon and decodes the coding information, the data is transmitted to the PLC, and the PLC outputs a corresponding control signal after internal data processing and functional logic judgment.
S3: if the PLC judges that the beacon is a pantograph lowering beacon according to the data, a pantograph lowering signal is sent out, a pantograph lowering relay is controlled to be powered on, and a pantograph lowering instruction is executed; and if the beacon is a pantograph lifting beacon, sending a pantograph lifting signal, controlling a pantograph lifting relay to be electrified and executing a pantograph lifting instruction.
In specific implementation, a pantograph lifting signal is output by a pantograph lifting function beacon when the pantograph lifting function beacon is detected, so that a pantograph lifting relay is electrified, a pantograph lifting instruction is executed, and optionally, a pantograph lifting in-place indicator lamp on a driver platform is lightened after the pantograph lifting in-place; when the pantograph lowering function beacon is detected, a pantograph lowering signal is output to enable the pantograph lowering relay to be electrified, a pantograph lowering instruction is executed, and optionally, a pantograph lowering in-place indicating lamp on the driver platform is turned on after pantograph lowering in place.
S4: and if the diagnosis of the PLC and the RFID reader is abnormal, controlling a pantograph of the tramcar through a manual mode, shielding the beacon identified by the RFID reader, and controlling the pantograph through a manual command.
In the specific implementation, if the equipment has faults, the system faults can be reported through the network HMI display screen, at the moment, the automatic control mode cannot be entered, and a driver needs to turn a switch to a manual position to enter the manual control mode. The manual control mode is controlled by a pantograph mode selection switch and pantograph lifting and pantograph lowering buttons, a driver can directly turn the mode selection switch to a manual position to enter the manual control mode, and beacon data identified by the RFID in the manual control mode are automatically shielded. The pantograph can be controlled to rise and fall in a manual control mode when starting and receiving or automatic mode equipment fails, in order to ensure safety during manual control, a driver needs to operate a pantograph rising and falling button to control a train in a static state, the pantograph rising button is pressed to execute pantograph rising operation, and the pantograph falling button is pressed to execute pantograph falling operation.
S5: and storing the data of the beacon and the control process data of the pantograph in the automatic mode on an internal memory in the PLC in a csv format in real time, and analyzing the data.
In a specific implementation, the PLC controller has a data recording function, and can store beacon data and control process data in an automatic mode on an internal memory in a csv format in real time so as to analyze the data.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
Fig. 3 is a block diagram of a pantograph control system of a tramcar according to the present invention, the pantograph control system using RFID technology is an automatic control system with signal receiving, transmission and control as a core, the system devices are divided into three parts, i.e. a vehicle-mounted device 1, a ground device 2 and an encoding device 3, the system uses the above-mentioned pantograph control method of the tramcar, please refer to fig. 3, and the method includes:
the vehicle-mounted equipment 1 comprises a PLC 12 arranged on the tramcar and an RFID reader 13 arranged at the bottom of the tramcar, wherein the PLC 12 and the RFID reader 13 diagnose after establishing data communication, and if the diagnosis is normal, the pantograph of the tramcar is controlled through an automatic mode; the vehicle-mounted equipment 1 further comprises a pantograph ascending relay 14 and a pantograph descending relay 15, and if the PLC 12 judges that the beacon 21 is a pantograph descending beacon according to the data, a pantograph descending signal is sent out, the pantograph descending relay 15 is controlled to be powered on, and a pantograph descending instruction is executed; if the beacon 21 is a pantograph lifting beacon, a pantograph lifting signal is sent out, the pantograph lifting relay 14 is controlled to be powered on, and a pantograph lifting command is executed.
Optionally, the vehicle-mounted device 1 further includes a control button 11, and if the diagnosis of the PLC 12 and the RFID reader 13 is abnormal, the pantograph of the tramcar is controlled in the manual mode, the beacon 21 recognized by the RFID reader 13 is shielded, and a manual command is sent through the control button to control the pantograph.
Optionally, the data of the beacon 21 in the automatic mode and the control process data of the pantograph are stored in the format of csv in the internal memory of the PLC 12 in real time, and the data are analyzed.
The encoding device 3 comprises a handheld reader-writer 31, an ID code is programmed for each beacon 21 through the handheld reader-writer 31, the beacon 21 transmits an ID code modulation signal in a memory to a receiving antenna of the RFID reader 13 through a built-in antenna, and data information interaction between the RFID reader 13 and the beacon 21 is realized after the ID code modulation signal is demodulated and decoded by a signal processing unit in the RFID reader 13.
In specific implementation, the vehicle-mounted device 1 comprises a PLC controller 12, an RFID reader 13 (integrated with an antenna built-in module), a control button 11, a pantograph-ascending relay 14 and a pantograph-descending relay 15; the ground equipment 2 is a passive beacon 21; the encoding device 3 is a handheld reader-writer 31, and the system can accurately position the geographical position of the train of the tramcar at a specific position of a line and can realize the control of automatic pantograph lifting and automatic pantograph lowering of the train.
In the concrete implementation, a beacon 21 is buried on the ground of a line track according to the control requirements of the pantograph lifting and pantograph lowering of a train on the line, the beacon 21 is installed between two tracks, and the buried position can be obtained by comprehensively considering and calculating factors such as the running speed of the train, the length of the train, the installation position of a pantograph, the response time of a system, the safety distance in the implementation time of the pantograph lifting and the like, and is determined according to the conditions of the line and the train.
In a specific implementation, each beacon 21 is programmed with an ID code by the handheld reader 31; the bottom of the train body is provided with an RFID reader 13, two RFID readers 13 are symmetrically arranged by taking a middle train as a center, when a ground train passes through a beacon road section, an antenna of the RFID reader 13 transmits a radio frequency signal with a specific frequency to activate a beacon 21, the beacon 21 transmits an ID data modulation signal in a memory to a receiving antenna of the RFID reader 13 through a built-in antenna, and after the ID data modulation signal is demodulated and decoded by a signal processing unit in the reader 13, the data information interaction of the vehicle-mounted RFID reader 13 and the ground beacon 21 is realized.
In specific implementation, after the vehicle-mounted controller PLC 12 establishes data communication with the RFID reader 13, the data information in the reader 13 is called to be compared with the information stored in the PLC software database, so that the current accurate geographical position of the train can be identified according to the unique ID code of the beacon 21, and when the pantograph lifting function beacon data is acquired, the PLC controller 12 outputs pantograph lifting control signals after logical processing, so that the pantograph lifting control circuit relay 14 is powered on, and automatic pantograph lifting control is realized; when the pantograph lowering function signal is acquired, the PLC 12 outputs a pantograph lowering control signal after logic processing so that the pantograph lowering control circuit relay 15 is electrified, and automatic pantograph lowering control is realized.
In one embodiment, the PLC controller 12 has a data logging function that can save the beacon data and control process data in the automatic mode in real time in the csv format on the internal memory for data analysis.
In addition, the method and system for controlling the pantograph of the tram described with reference to fig. 1, 2 and 3 can be implemented by a control circuit of the pantograph of the tram, and fig. 4 is a circuit diagram of the control circuit of the pantograph of the tram according to the present invention. The circuit comprises an automatic control mode and a manual control mode, the automatic control mode outputs control signals through the PLC after beacon data are collected through the RFID system, and the manual control mode outputs control signals through the pantograph lifting and lowering buttons. The circuit comprises:
and the circuit breaker is used for supplying power to the pantograph control circuit and the equipment.
In specific implementation, the circuit breakers QF1, QF2 and QF3 supply power to the pantograph control circuits and equipment, and the capacity of the circuit breakers needs to meet the load requirements of the circuits and the equipment.
The mode selection switch is used for selecting a pantograph control mode, and the normally open contacts of the mode selection switch represent an automatic mode when being closed, and the number of the normally open contacts is at least two; optionally, when the normally closed contacts of the mode selection switch are closed, a manual mode is represented, and at least two pairs of normally closed contacts are provided; the pantograph lifting relay and the pantograph lowering relay are controlled by a pantograph lifting button and a pantograph lowering button in a manual mode.
In specific implementation, the mode selection switch SAMS is used as a pantograph control mode selection switch, a normally open contact of the mode selection switch represents an automatic mode when being closed, a normally closed contact of the mode selection switch represents a manual mode when being closed, the contacts at least include 2 pairs of normally open contacts and 2 pairs of normally closed contacts, and a 2-gear knob switch or a button can be used, or a multi-gear universal switch can be selected.
Optionally, the circuit further comprises: the pantograph lifting button and the pantograph lowering button are used for carrying out pantograph lifting and pantograph lowering operations in a manual mode, normally open contacts of the pantograph lifting button and the pantograph lowering button are closed and represent that the buttons are pressed down, and at least one pair of normally open contacts is arranged.
In a specific implementation, the pantograph-raising button SBPUP is used for pantograph-raising operation in a manual mode, the pantograph-lowering button is used for pantograph-lowering operation in the manual mode, the normally-open contact closure of the pantograph-raising button represents that the button is pressed, and the contacts at least comprise 1 pair of normally-open contacts.
The RFID system comprises a PLC controller and an RFID reader, wherein the RFID reader and the PLC controller are powered by a circuit breaker.
In specific implementation, the RFID system vehicle-mounted device comprises a PLC controller T01 and an RFID reader T02, wherein the PLC controller is integrated with a CPU central processing module, an RS485 or Ethernet communication module, a certain number of digital quantity input and output modules and a memory card; the RFID reader adopts a wireless radio frequency reader-writer, a radio frequency unit (a transmitting and receiving module), a control module and an antenna unit are integrated in the RFID reader, the RFID reader is provided with a data communication interface (RS-485/RS-232 or an Ethernet interface) and an I/O digital quantity input and output interface, the RFID reader and the PLC controller are powered by a circuit breaker QF3, the RFID reader and the PLC controller are communicated through RS485 or Ethernet, and a plurality of hard wire I/O can be configured for standby.
And the master control relay is activated by a key of a tramcar driver controller to obtain electricity, and the normally open contact of the master control relay is closed to represent the activation of the tramcar master control.
In specific implementation, the master control relay KALA is powered after the train driver controller key is activated, and the normally open contact of the master control relay KALA is closed to represent the train master control activation.
The pantograph position relay, the change over switch in the tram high-voltage box gets electric when hitting the pantograph position, and pantograph position relay normally open contact closure represents change over switch at the pantograph position, and the contact contains two pairs of normally open contacts at least, just can control the pantograph when only in the pantograph position, and pantograph position relay does not get electric when workshop position or ground connection position.
In the concrete implementation, pantograph position relay KAPAN gets electricity when change over switch in the train high-voltage box hits the pantograph position, and its normally open contact closure represents change over switch at the pantograph position, and the contact contains 2 at least to normally open contact, only can control the pantograph when the pantograph position, and the relay does not get electricity when workshop position or the position of taking over, has guaranteed the security of lift bow.
The pantograph lifting relay is electrified when outputting a pantograph lifting request signal, the contacts of the pantograph lifting relay at least comprise a pair of normally open contacts and a pair of normally closed contacts, and the pantograph lifting relay is controlled by a PLC (programmable logic controller) in the tramcar in an automatic mode.
In a specific implementation, the pantograph raising relay KAPUP is energized when outputting a pantograph raising request signal, and its contacts comprise at least 1 pair of normally open contacts and 1 pair of normally closed contacts, wherein in the automatic mode it is controlled by the PLC controller T01 and in the manual mode it is controlled by the pantograph raising button SBPUP.
The pantograph-lowering relay is electrified when outputting a pantograph-lowering request signal, the contacts of the pantograph-lowering relay at least comprise a pair of normally open contacts and a pair of normally closed contacts, and the pantograph-lowering relay is controlled by a PLC (programmable logic controller) in the tramcar in an automatic mode.
In a specific implementation, the pantograph relay KAPDN is energized when outputting a pantograph request signal, and its contacts comprise at least 1 pair of normally open contacts and 1 pair of normally closed contacts, wherein in the automatic mode it is controlled by the PLC controller T01 and in the manual mode it is controlled by the pantograph button SBPDN.
Optionally, the circuit further comprises: the pantograph lifting and positioning relay is used for obtaining electricity after the pantograph lifting and positioning are carried out, the contacts of the pantograph lifting and positioning relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lifting is finished; the pantograph lowering in-place relay obtains electricity after the pantograph lowering is executed to be in place, the contacts of the pantograph lowering in-place relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lowering is completed.
In a specific implementation, the pantograph lifting to position relay KAPUPOK is controlled by the pantograph system controller T03 to be powered after the pantograph lifting to position is performed, the contacts at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lifting is completed; the pantograph lowering in-place relay KAPDNOK is controlled by the pantograph system controller T03 to get power after the pantograph lowering is executed to the position, the contacts at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lowering is finished.
Optionally, the circuit further comprises: the pantograph lifting button lamp is used for indicating the pantograph lifting state of the pantograph and is lightened after the pantograph is lifted to the position; the pantograph descending button lamp is used for indicating the pantograph descending state of the pantograph and is lightened after the pantograph descending is in place; and the network system RIOM host collects DI signals of the pantograph ascending position, pantograph descending position and RFID system equipment state, and is used for transmitting the DI signals to a network display screen for state display and reminding.
In specific implementation, the pantograph raising button lamp HLPUP is used for indicating the pantograph raising state, and can be integrated on the pantograph raising button, or the pantograph raising indicator lamp can be separately arranged and is lighted after the pantograph is raised to a position.
In specific implementation, the pantograph lowering button lamp HLPDN is used for indicating a pantograph lowering state of the pantograph, and may be integrated on the pantograph lowering button, or may be separately provided with a pantograph lowering indicator lamp and turned on after the pantograph is lowered in place.
In specific implementation, a network system RIOM host T04 acquires DI signals of pantograph rising to the position, pantograph falling to the position and RFID system equipment state for transmitting to a network display screen HMI for state display and reminding, wherein the RFID system equipment state is acquired by a DO end output signal of a PLC after equipment power supply self-checking, the normal is 1, and the fault is 0, and when the fault occurs, the network HMI display screen can display by popping and remind a driver of the fault of the automatic mode equipment for pantograph control, and manual mode control is required.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A tram pantograph control method is characterized by comprising the following steps:
a control mode judging step, namely arranging a PLC and an RFID reader in a tramcar, diagnosing the PLC and the RFID reader after the PLC and the RFID reader establish data communication, and controlling a pantograph of the tramcar through an automatic mode if the diagnosis is normal;
a beacon reading and transmitting step, namely setting a beacon under a track of the tramcar, identifying and reading the beacon through the RFID reader in the running process of the tramcar, transmitting data in the beacon to the PLC when the RFID reader reads the beacon, and judging the data through the PLC;
a pantograph operation determining step, wherein if the PLC judges that the beacon is a pantograph lowering beacon according to the data, a pantograph lowering signal is sent out, a pantograph lowering relay is controlled to be powered on, and a pantograph lowering instruction is executed; and if the beacon is a pantograph lifting beacon, sending a pantograph lifting signal, controlling a pantograph lifting relay to be electrified and executing a pantograph lifting instruction.
2. The method of claim 1, further comprising a manual control step of:
and if the diagnosis of the PLC and the RFID reader is abnormal, controlling a pantograph of the tramcar through a manual mode, shielding the beacon identified by the RFID reader, and controlling the pantograph through a manual command.
3. The method of claim 1, further comprising a control data recording step of:
and storing the data of the beacon and the control process data of the pantograph in the automatic mode on an internal memory in the PLC in a csv format in real time, and analyzing the data.
4. A tram pantograph control system, comprising:
the vehicle-mounted equipment comprises a PLC (programmable logic controller) arranged on the tramcar and an RFID (radio frequency identification) reader arranged at the bottom of the tramcar, wherein the PLC and the RFID reader are diagnosed after establishing data communication, and if the diagnosis is normal, a pantograph of the tramcar is controlled in an automatic mode;
the ground equipment comprises a beacon arranged under the track ground of the tramcar, the beacon is identified and read by the RFID reader in the running process of the tramcar, when the RFID reader reads the beacon, data in the beacon is transmitted to the PLC, and the data is judged by the PLC;
the encoding equipment comprises a handheld reader-writer, an ID code is compiled for each beacon through the handheld reader-writer, the beacon transmits the ID code modulation signal in the memory to a receiving antenna of the RFID reader through a built-in antenna, and the data information interaction between the RFID reader and the beacon is realized after the ID code modulation signal is demodulated and decoded by a signal processing unit in the RFID reader;
the vehicle-mounted equipment further comprises a pantograph ascending relay and a pantograph descending relay, and if the PLC judges that the beacon is a pantograph descending beacon according to the data, the PLC sends a pantograph descending signal to control the pantograph descending relay to be electrified and execute a pantograph descending instruction; and if the beacon is a pantograph lifting beacon, sending a pantograph lifting signal, controlling a pantograph lifting relay to be electrified and executing a pantograph lifting instruction.
5. The pantograph control system of claim 4, wherein the in-vehicle device further includes a control button, and when the diagnosis of the PLC and the RFID reader is abnormal, the in-vehicle device controls a pantograph of the tram in a manual mode, shields the beacon recognized by the RFID reader, and issues a manual command to control the pantograph via the control button.
6. The pantograph control system of claim 4, wherein the data of the beacon and the control process data of the pantograph in the automatic mode are stored in a csv format in an internal memory of the PLC in real time, and data analysis is performed.
7. A tram pantograph control circuit, characterized in that includes:
the circuit breaker is used for supplying power to the pantograph control circuit and the equipment;
the mode selection switch is used for selecting the pantograph control mode, and the normally open contacts of the mode selection switch represent an automatic mode when being closed, and the number of the normally open contacts is at least two;
the RFID system comprises a PLC controller and an RFID reader, and the RFID reader and the PLC controller are powered by the circuit breaker;
the main control relay is activated by the tramcar driver controller key to obtain electricity, and the normally open contact of the main control relay is closed to represent the activation of the tramcar main control;
a pantograph position relay, wherein when a transfer switch in a high-voltage box of the tramcar is switched to a pantograph position, the power is obtained, a normally open contact of the pantograph position relay is closed to represent that the transfer switch is at the pantograph position, the contacts at least comprise two pairs of normally open contacts, the pantograph can be controlled only when the pantograph position is reached, and the pantograph position relay is not powered when the tramcar position or the ground position is reached;
the pantograph lifting relay is electrified when outputting a pantograph lifting request signal, the contacts of the pantograph lifting relay at least comprise a pair of normally open contacts and a pair of normally closed contacts, and the pantograph lifting relay is controlled by a PLC (programmable logic controller) in the tramcar in the automatic mode;
and a pantograph relay which is energized when outputting a pantograph request signal, the contacts of the pantograph relay include at least a pair of the normally open contacts and a pair of the normally closed contacts, and the pantograph relay is controlled by the PLC controller in the tramcar in the automatic mode.
8. The trolley pantograph control circuit of claim 7, wherein the circuit further comprises:
the pantograph lifting button and the pantograph lowering button are used for carrying out pantograph lifting and pantograph lowering operations in a manual mode, normally open contacts of the pantograph lifting button and the pantograph lowering button are closed and represent that the buttons are pressed down, and at least one pair of normally open contacts is arranged.
9. The trolley pantograph control circuit of claim 8, wherein said mode selection switch normally closed contacts, when closed, represent said manual mode, said normally closed contacts being at least two pairs; the pantograph raising relay and pantograph lowering relay are controlled by the pantograph raising button and pantograph lowering button in the manual mode.
10. The trolley pantograph control circuit of claim 7, wherein the circuit further comprises:
the pantograph lifting and positioning relay is used for obtaining electricity after the pantograph lifting and positioning are carried out, the contacts of the pantograph lifting and positioning relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lifting is finished;
the pantograph lowering in-place relay is used for obtaining electricity after the pantograph lowering is executed to be in place, the contacts of the pantograph lowering in-place relay at least comprise a pair of normally open contacts, and the normally open contacts are closed to represent that the pantograph lowering is finished;
the pantograph lifting button lamp is used for indicating the pantograph lifting state of the pantograph and is lightened after the pantograph is lifted to the position;
the pantograph descending button lamp is used for indicating the pantograph descending state of the pantograph and is lightened after the pantograph descending is in place;
and the network system RIOM host collects DI signals of the pantograph ascending position, pantograph descending position and RFID system equipment state, and is used for transmitting the DI signals to a network display screen for state display and reminding.
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| CN202110747819.4A CN113370790B (en) | 2021-07-01 | 2021-07-01 | Tramcar pantograph control method, system and control circuit |
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| CN202110747819.4A CN113370790B (en) | 2021-07-01 | 2021-07-01 | Tramcar pantograph control method, system and control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113858960A (en) * | 2021-10-22 | 2021-12-31 | 中车株洲电力机车有限公司 | Locomotive and pantograph control method and system thereof |
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| CN113370790B (en) | 2022-09-02 |
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