CN112653060A - Contact net deicing system - Google Patents
Contact net deicing system Download PDFInfo
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- CN112653060A CN112653060A CN202011485362.6A CN202011485362A CN112653060A CN 112653060 A CN112653060 A CN 112653060A CN 202011485362 A CN202011485362 A CN 202011485362A CN 112653060 A CN112653060 A CN 112653060A
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- deicing
- contact
- vibrating rod
- icing
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electric Cable Installation (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a contact net deicing system, which comprises an icing sensor, an deicing machine, a control circuit board and a convergent node, wherein the icing sensor is arranged at the position where a carrier cable is connected with a horizontal pull rod, used for detecting the icing condition of a contact network, the deicing machine is arranged on a cantilever and used for deicing the contact line or the catenary, the control circuit board is arranged beside the deicing machine, used for receiving the information collected by the icing sensor and the instruction information sent by the railway dispatching center and controlling the deicing machine to work according to the instruction information, a gathering node is arranged beside the contact network and is used for gathering the information collected by the icing sensor in the line section, and the information is gathered and transmitted to a railway dispatching center, the railway dispatching center sends a deicing instruction to the deicing machine, the deicing machine is controlled to apply vibration to the contact wire or the catenary cable, and the covered ice is forced to fall off by vibration mechanical waves transmitted to the contact wire or the catenary cable.
Description
Technical Field
The invention relates to the field of contact network deicing, in particular to a contact network deicing system.
Background
With the rapid development of modern science and technology, the construction of the electrified railway in China realizes the leap-type development. Currently, the railway department places great importance on the safe operation of electrified railways. Ice coating accidents often happen to electrified railway contact networks in China, which causes severe influence on rapidly developed electrified railways, particularly in cold winter, when no train passes through the railway for a long time, the contact networks are easily surrounded by the ice coating, so that the pantograph is difficult to take electricity, and the safe operation of the train is threatened. After the contact line is coated with ice, the contact line equipment is required to bear the weight of the contact line equipment and the pressure caused by the ice coating. In addition, the electrified railway is in a very harsh environment, and under the action of strong wind, the bearing load of the contact network is greatly increased. When the load borne by the catenary exceeds the designed standard, the catenary may break due to excessive tension of the wire, thereby threatening the safe running of the train. In addition, the ice coating of the contact net can also reduce the conductivity of the pantograph when the pantograph is contacted with current, thereby causing the contact net to be arcing and finally burning the pantograph and the contact line. The phenomenon of pantograph beating can also occur when the contact net is iced, and the pantograph is damaged.
In the past, people usually adopt a mechanical deicing method, namely, a contact net is knocked manually, so that a base net is forced to vibrate, and accordingly, ice covers fall off. However, such deicing effect is not ideal, which increases the labor intensity of workers and may cause certain damage to the contact net. The existing high-current ice melting method needs to waste a large amount of electric energy and is inconvenient to operate; the normal power transmission of a contact net must be cut off in a short time when the AC/DC short circuit ice melting is carried out, and the contact net is damaged if the control is not good; high frequency excitation de-icing may generate high frequency electromagnetic waves that interfere with normal communications of other electrical devices.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a deicing system for a catenary, wherein a set of icing sensor and deicing machine is installed above each strut of the catenary, the icing condition on the catenary is detected by the icing sensor, the detected icing information is transmitted to a railway dispatching center and a train about to enter the section, the railway dispatching center sends a deicing instruction to the deicing machine, the deicing machine is controlled to apply vibration to a contact wire or a catenary, and the covered ice is forced to fall off by mechanical waves transmitted to the contact wire or the catenary. According to the method, the ice coating can be eliminated without manually knocking the contact network on site, the contact network can be deiced under the condition that the safe operation of the train is not influenced, and the safety of the train operation is effectively improved.
In order to achieve the purpose, the contact net deicing system provided by the invention is realized as follows:
a contact net deicing system comprises an icing sensor, an deicing machine, a control circuit board and a convergent node, wherein the icing sensor is arranged at the position where a carrier cable is connected with a horizontal pull rod, used for detecting the icing condition of a contact network, the deicing machine is arranged on a cantilever and used for deicing the contact line or the catenary, the control circuit board is arranged beside the deicing machine, used for receiving the information collected by the icing sensor and the instruction information sent by the railway dispatching center and controlling the deicing machine to work according to the instruction information, a gathering node is arranged beside the contact network and is used for gathering the information collected by the icing sensor in the line section, and the information is gathered and transmitted to a railway dispatching center, the railway dispatching center sends a deicing instruction to the deicing machine, the deicing machine is controlled to apply vibration to the contact wire or the catenary cable, and the covered ice is forced to fall off by mechanical waves transmitted to the contact wire or the catenary cable.
The deicing machine comprises a stepping motor, a telescopic motor, a metal connecting piece, a vibrating rod, a flexible shaft and hose assembly, a vibrating rod motor and a frequency converter, wherein the vibrating rod motor is arranged on a rotating shaft of the stepping motor, the telescopic motor is arranged on the vibrating rod motor, a telescopic rod of the telescopic motor is connected with the vibrating rod through the metal connecting piece, the frequency converter is arranged beside the vibrating rod motor and used for controlling the rotating speed of the vibrating rod motor so as to adjust the vibration amplitude and the frequency of the vibrating rod, the flexible shaft and hose assembly is arranged between the vibrating rod and the vibrating rod motor, the frequency converter is controlled by a control circuit board to supply power to the vibrating rod motor, a power supply for adjusting the rotating speed of the vibrating rod motor by adjusting the output of the frequency converter is used, a scheduling center sends a deicing command to a convergence node through a 5G communication technology, the convergence node transmits the command to the control circuit board, and, rotating the output end of a vibrating rod motor between a contact wire and a catenary cable, controlling a telescopic motor to pull a vibrating rod to move to the contact wire or the catenary cable, generating vibration on the vibrating rod by the output of the vibrating rod motor, transmitting vibration force to the contact wire or the catenary cable through the vibrating rod, generating vibration on the contact wire or the catenary cable, removing coated ice, controlling the telescopic motor to contract by a control circuit board when the contact wire needs to be deiced, pulling the vibrating rod downwards to make the vibrating rod contact with the contact wire so as to deice the contact wire, controlling the telescopic motor to lift by the control circuit board when the catenary cable needs to be deiced, pushing the vibrating rod upwards to make the vibrating rod contact with the catenary cable so as to deice the catenary cable, controlling a stepping motor to reversely rotate by the control circuit board after the deicer is finished, and rotating the vibrating rod on the vibrating rod motor to the other side, the vibrating rod is prevented from interfering the train running on the contact line.
The icing sensor comprises a plastic shell, electrode plates, a signal conditioning circuit board and an electric heating wire mesh, wherein two identical electrode plates are placed in the plastic shell and used as electrode plates of a capacitor, the electric heating wire mesh is arranged below the plastic shell, the signal conditioning circuit board is installed on the surface of the plastic shell, when a contact net is iced, the plastic shell is iced, the ice blocks and the two electrode plates form a capacitor when the plastic shell is iced due to the fact that the dielectric medium of the ice blocks is different from the dielectric medium of other substances, the capacitance is larger and larger along with the increase of the ice blocks, the signal conditioning circuit board receives the change value of the capacitor and transmits information processed by the signal conditioning circuit board to a minimum system of a single chip microcomputer, and the content of the icing in the plastic shell is calculated in the minimum system of the single chip microcomputer so.
The signal conditioning circuit board is provided with a bridge circuit, a signal amplifying circuit, a filter circuit and an analog-digital conversion circuit, wherein two electrode plates and a resistor are connected in parallel to form a bridge arm of the bridge circuit, when ice blocks exist between the two electrode plates, the bridge circuit is unbalanced and outputs voltage signals, the signal amplifying circuit amplifies the changed voltage signals, the filter circuit filters noise waves, and the analog-digital conversion circuit converts the acquired analog signals into digital signals and transmits the digital signals to a minimum system of a single chip microcomputer for calculation and analysis.
The control circuit board of the invention is provided with a ZigBee terminal node, a singlechip minimum system, a PLC control board and a relay, the ZigBee terminal node and a sink node are in wireless connection communication, the singlechip minimum system is used for receiving information detected by an icing sensor, whether a current overhead contact system is iced is calculated in the singlechip minimum system, when the overhead contact system is iced, the singlechip minimum system controls the ZigBee terminal node to send the icing information of the overhead contact system to the sink node, then the information of the icing overhead contact system is sent to a PC of a railway dispatching center through the sink node, then the railway dispatching center sends an deicing instruction to the PLC control board through the PC, the sink node and the ZigBee terminal node, the PLC control board controls a frequency converter, a stepping motor and a telescopic motor to work, a vibrating rod extends to a contact line or a catenary to deice, and after the deicing is finished, the control circuit board controls the, so that the heating wire heats and removes ice blocks in the icing sensor.
The sink node comprises a ZigBee router, a 5G module and an STM32 control board, wherein the ZigBee router, the 5G module and the STM32 control board are electrically connected, the ZigBee router receives information transmitted by the ZigBee terminal node and transmits the information to the STM32 control board, the STM32 control board controls the 5G module to transmit the received information to a railway dispatching center and a train to remind workers of icing on a contact network in the interval, and the railway dispatching center workers transmit deicing instructions to the STM32 control board through a PC and the 5G module. And the STM32 control board controls the ZigBee terminal node to send a deicing instruction to the PLC control board.
According to the ZigBee terminal node and ZigBee router networking system, a set of icing sensor and deicing machine is installed above each support column of a contact network, all ZigBee terminal nodes between every two stations form a group of monitoring nodes, the monitoring nodes are all networked with the ZigBee router, a ZigBee communication protocol is converted into a 5G communication protocol through an STM32 control panel, information collected by all monitoring nodes in the area is transmitted to the terminal nodes through a control 5G module, and the terminal nodes comprise a PC (personal computer) of a railway dispatching center and a train.
The scheme flow of the deicing machine for deicing the contact wire and the carrier cable comprises the following steps: firstly, initializing a system, collecting icing information on a contact net by an icing sensor, when the icing condition on the contact net is collected, controlling a ZigBee terminal node to send icing information of the contact net to a sink node by a minimum system of a single chip microcomputer, then sending the icing information of the contact net to a PC (personal computer) of a railway dispatching center and a train in a section through the sink node, sending dispatching information of power-off parking to the section when workers judge that the contact net in the section needs to be deiced, sending deicing instructions to a PLC (programmable logic controller) through the PC, the sink node and the ZigBee terminal node, controlling a frequency converter, a stepping motor and a telescopic motor to work by the PLC, enabling a vibrating bar to extend onto the contact net or a catenary to deiced until the deicing is finished, sending an instruction of deicing completion to the PLC by the dispatching center, and controlling the vibrating bar motor to stop working by the PLC, and the stepping motor is controlled to rotate reversely, the vibrating spear on the vibrating spear motor is rotated to the other side, the vibrating spear is prevented from interfering the train running on a contact line, then the railway dispatching center sends information that the deicing is finished and the train can be communicated to the inside of a section, the train is electrified to run, and meanwhile, the control circuit board controls the relay to work, so that the electric heating wire is heated, and ice blocks in the icing sensor are removed.
Because the vibrating rod is adopted to transmit the vibrating force to the contact wire or the carrier cable to realize the structure for deicing the contact net, the invention can obtain the following beneficial effects:
1. the method is characterized in that a set of icing sensor and deicing machine is arranged above each strut of the contact network, the icing condition on the contact network is detected through the icing sensor, the detected icing information is transmitted to a railway dispatching center and a train which is about to enter the section, the railway dispatching center sends a deicing instruction to the deicing machine, the deicing machine is controlled to apply vibration to the contact line or the catenary cable, and the covered ice is forced to fall through mechanical waves transmitted to the contact line or the catenary cable. The method can realize deicing without needing workers to knock a contact net, and reduces the labor intensity of the workers.
2. According to the invention, the ZigBee terminal nodes, the ZigBee routers and the 5G modules are adopted to form the Internet of things, so that the icing condition of the contact network in the region is collected and deiced, and the ice coating can be eliminated without manually knocking the contact network on site. The contact net can be deiced under the condition that the safe operation of the train is not influenced, and the safety of the train operation is effectively improved.
Drawings
Fig. 1 is a schematic view of an installation structure of a contact net deicing system according to the present invention;
fig. 2 is a schematic structural diagram of a deicing machine of a contact net deicing system according to the present invention;
fig. 3 is a schematic structural diagram of an icing sensor of a catenary deicing system according to the present invention;
fig. 4 is a block diagram of a signal conditioning circuit board of the overhead line system deicing system according to the present invention;
fig. 5 is a block diagram of a control circuit board of the overhead line system deicing system according to the present invention;
fig. 6 is a schematic structural diagram of a sink node of the overhead line system deicing system according to the present invention;
fig. 7 is a schematic structural diagram of a monitoring node, a sink node and a terminal node of the contact network deicing system according to the present invention;
fig. 8 is a flow chart of a scheme for deicing contact wires and catenary by using a deicing machine of the contact network deicing system.
The main elements are indicated by symbols.
| Icing sensor | 1 | |
2 |
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3 | |
4 |
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5 | |
6 |
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7 | Vibrating rod | 8 |
| Flexible shaft and hose assembly | 9 | |
10 |
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11 | |
12 |
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13 | Signal |
14 |
| Electric |
15 | ZigBee terminal node | 16 |
| Minimum system of single chip microcomputer | 17 | |
18 |
| Relay with a movable contact | 19 | ZigBee |
20 |
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21 | |
22 |
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
Fig. 1 to 8 show a contact net deicing system according to the present invention, which includes an icing sensor 1, a deicing machine 2, a control circuit board 3, and a sink node 4.
As shown in fig. 1, the icing sensor 1 is installed at a position where a catenary is connected with a horizontal pull rod, and is used for detecting the icing condition of a catenary, the deicing machine 2 is installed on a cantilever and is used for deicing a contact line or the catenary, the control circuit board 3 is installed beside the deicing machine 2 and is used for receiving information collected by the icing sensor 1 and instruction information sent by a railway dispatching center and controlling the deicing machine 2 to work according to the instruction information, a gathering node 4 is arranged beside the catenary and is used for gathering information collected by the icing sensor 1 in a line interval and gathering and transmitting the information to the railway dispatching center, the railway dispatching center sends a deicing instruction to the deicing machine 2 and controls the deicing machine 2 to apply vibration to the contact line or the catenary, and ice coating is forced to fall through mechanical waves transmitted to the contact line or the catenary. According to the method, the ice coating can be eliminated without manually knocking the contact network on site, the contact network can be deiced under the condition that the safe operation of the train is not influenced, and the safety of the train operation is effectively improved.
As shown in fig. 2, the deicing machine 2 includes a stepping motor 5, a telescopic motor 6, a metal connector 7, a vibrating rod 8, a flexible shaft and hose assembly 9, a vibrating rod motor 10, and a frequency converter 11, the vibrating rod motor 10 is installed on a rotating shaft of the stepping motor 5, the telescopic motor 6 is installed on the vibrating rod motor 10, a telescopic rod of the telescopic motor 6 is connected with the vibrating rod 8 by the metal connector 7, the frequency converter 11 is installed beside the vibrating rod motor 10 and is used for controlling the rotating speed of the vibrating rod motor 10 to adjust the vibration amplitude and frequency of the vibrating rod 8, the flexible shaft and hose assembly 9 is installed between the vibrating rod 8 and the vibrating rod motor 10, the frequency converter 11 is controlled by a control circuit board 3 to supply power to the vibrating rod motor 10, the power supply for adjusting the rotating speed of the vibrating rod motor 10 by adjusting the output of the frequency converter 11, the dispatching center sends a deicing command to the convergence node 4 through a 5, the convergence node 4 transmits an instruction to the control circuit board 3, the control circuit board 3 controls the stepping motor 5 to rotate according to the received instruction, the output end of the vibrating rod motor 10 rotates to a position between the contact wire and the catenary, then the telescopic motor 6 is controlled to pull the vibrating rod 8 to move to the contact wire or the catenary, the output of the vibrating rod motor 10 generates vibration on the vibrating rod 8, the vibrating force is transmitted to the contact wire or the catenary through the vibrating rod 8 to generate vibration on the contact wire or the catenary, ice coating is removed, when the contact wire needs to be deiced, the control circuit board 3 controls the telescopic motor 6 to contract, the vibrating rod 8 is pulled down to enable the vibrating rod 8 to be in contact with the contact wire, the contact wire is deiced, when the catenary needs to be deiced, the control circuit board 3 controls the telescopic motor 6 to lift out, the vibrating rod 8 is pushed up, the vibrating rod 8 is in contact with the catenary, so that the catenary is deiced, after the deicing is finished, the control circuit board 3 controls the stepping motor 5 to rotate reversely, the vibrating rod 8 on the vibrating rod motor 10 is rotated to the other side, and the vibrating rod 8 is prevented from interfering the train running on a contact line.
As shown in fig. 3, the icing sensor 1 includes a plastic casing 12, electrode plates 13, a signal conditioning circuit board 14, and an electric heating wire mesh 15, two identical electrode plates 13 are placed in the plastic casing 12 to serve as electrode plates of a capacitor, the electric heating wire mesh 15 is arranged below the plastic casing 12, the signal conditioning circuit board 14 is installed on the surface of the plastic casing 12, when a contact net is iced, the plastic casing 12 is also iced, because the dielectric of ice cubes is different from the dielectric of other substances, when the plastic casing 12 is iced, the ice cubes and the two electrode plates 13 form a capacitor, the capacitor is increased with the increase of ice cubes, the signal conditioning circuit board 14 receives the change value of the capacitor and transmits the information processed by the signal conditioning circuit board 14 to a minimum system 17 of a single chip microcomputer, the content of the icing in the plastic casing 12 is calculated in the minimum system 17 of the single chip microcomputer, so as to judge whether the current overhead line system is frozen.
As shown in fig. 4, the signal conditioning circuit board 14 is provided with a bridge circuit, a signal amplifying circuit, a filter circuit, and an analog-to-digital conversion circuit, and two electrode plates 13 and a resistor are connected in parallel to form a bridge arm of the bridge circuit, when an ice block exists between the two electrode plates 13, the bridge circuit is unbalanced, and outputs a voltage signal, the signal amplifying circuit amplifies the changed voltage signal, the filter circuit filters noise waves, and the analog-to-digital conversion circuit converts the acquired analog signal into a digital signal and transmits the digital signal to the minimum system 17 of the single chip microcomputer for calculation and analysis.
As shown in fig. 5, a ZigBee terminal node 16, a minimum system of single chip 17, a PLC control board 18, and a relay 19 are disposed on the control circuit board 3, the ZigBee terminal node 16 establishes wireless connection communication with the sink node 4, the minimum system of single chip 17 is used to receive information detected by the icing sensor 1, calculate whether the current overhead contact system is iced in the minimum system of single chip 17, when the overhead contact system is iced, the minimum system of single chip 17 controls the ZigBee terminal node 16 to send the information of icing of the overhead contact system to the sink node 4, and then sends the information of icing of the overhead contact system to a PC of a railway dispatching center through the sink node 4, and then the railway dispatching center sends an deicing instruction to the PLC control board 18 through the PC, the sink node 4, and the ZigBee terminal node 16, and the PLC control board 18 controls the frequency converter 11, the stepping motor 5, and the telescopic motor 6 to operate, so that the vibrating bar 8, after the deicing is finished, the relay 19 is controlled by the control circuit board 3 to work, so that the heating wire heats, ice cubes in the icing sensor 1 are removed, and the icing sensor 1 is prevented from always detecting the icing information of the contact network.
As shown in fig. 6, the sink node 4 include ZigBee router 20, 5G module 21, STM32 control panel 22, ZigBee router 20, 5G module 21 establishes the electric connection relation with STM32 control panel 22, receive the information that ZigBee terminal node 16 sent by ZigBee router 20, carry to STM32 control panel 22, control 5G module 21 by STM32 control panel 22 and transmit the information that receives to railway dispatching center and train, remind the staff that the icing condition appears on the contact network in this interval, pass through the PC by railway dispatching center staff, the deicing instruction is sent to STM32 control panel 22 to 5G module 21. The STM32 control board 22 controls the ZigBee terminal node 16 to send a deicing instruction to the PLC control board 18.
As shown in fig. 7, the ZigBee terminal nodes 16 and the ZigBee router 20 form a network, a set of icing sensor 1 and a set of deicing machine 2 are installed above each strut of the contact network, all the ZigBee terminal nodes 16 between every two stations form a group of monitoring nodes, the monitoring nodes are all networked with the ZigBee router 20, the ZigBee communication protocol is converted into a 5G communication protocol by an STM32 control board 22, information collected by all the monitoring nodes in the area is transmitted to the terminal nodes by controlling a 5G module 21, the terminal nodes include a PC (personal computer) and a train of a railway dispatching center, an internet platform using ZigBee communication and 5G communication is formed, and the contact deicing is powerfully guaranteed.
As shown in fig. 8, the scheme flow of the deicing machine 2 for deicing the contact line and the catenary wire is as follows: firstly, initializing a system, collecting icing information on a contact network by an icing sensor 1, when the icing condition on the contact network is collected, controlling a ZigBee terminal node 16 to send icing information of the contact network to a sink node 4 by a singlechip minimum system 17, sending the icing information of the contact network to a PC (personal computer) of a railway dispatching center and a train in the interval through the sink node 4, sending dispatching information of power failure and stopping in the interval when workers judge that the contact network in the interval needs to be deiced, sending deicing instructions to a PLC (programmable logic controller) control panel 18 through the PC, the sink node 4 and the ZigBee terminal node 16, controlling a frequency converter 11, a stepping motor 5 and a telescopic motor 6 to work by the PLC control panel 18, enabling a vibrating bar 8 to extend to the contact line or a catenary to deiced, and sending instructions of deicing completion to the PLC control panel 18 by the dispatching center until the deicing is completed, the PLC control board 18 controls the vibrating spear motor 10 to stop working, controls the stepping motor 5 to rotate reversely, rotates the vibrating spear 8 on the vibrating spear motor 10 to the other side, prevents the vibrating spear 8 from interfering the train running on a contact line, then the railway dispatching center sends the information that the deicing is finished, the train can be communicated to the interval, the train is electrified to run, and meanwhile, the control circuit board 3 controls the relay 19 to work, so that the electric heating wire heats, and ice blocks in the icing sensor 1 are removed.
The working principle and the working process of the invention are as follows:
as shown in fig. 5, the minimum system 17 of the single chip microcomputer receives information detected by the icing sensor 1, calculates whether the current overhead contact system is iced in the minimum system 17 of the single chip microcomputer, when the overhead contact system is iced, the minimum system 17 of the single chip microcomputer controls the ZigBee terminal node 16 to send the information of icing of the overhead contact system to the sink node 4, then the sink node 4 sends the information of icing of the overhead contact system to the PC of the railway dispatching center, then the railway dispatching center sends an deicing instruction to the PLC control board 18 through the PC, the sink node 4 and the ZigBee terminal node 16, the PLC control board 18 controls the frequency converter 11, the stepping motor 5 and the telescopic motor 6 to work, the frequency converter 11 controls the vibrating rod motor 10 to work, so that the vibrating rod 8 extends to the contact line or the catenary to deice, and after deicing is finished, the control circuit board 3 controls the relay 19 to, ice cubes are removed from the ice sensor 1.
Claims (8)
1. The utility model provides a contact net deicing system which characterized in that: the deicing system comprises an icing sensor, an deicing machine, a control circuit board and a convergent node, wherein the icing sensor is arranged at the position where a catenary is connected with a horizontal pull rod and used for detecting the icing condition of a contact network, the deicing machine is arranged on a cantilever and used for deicing a contact line or the catenary, the control circuit board is arranged beside the deicing machine and used for receiving information collected by the icing sensor and instruction information sent by a railway dispatching center and controlling the deicing machine to work according to the instruction information, the convergent node is arranged beside the contact network and used for converging the information collected by the icing sensor in a line interval and transmitting the information to the railway dispatching center in a gathering manner, the railway dispatching center sends a deicing instruction to the deicing machine and controls the deicing machine to apply vibration to the contact line or the catenary and compels ice coating to fall through mechanical waves transmitted to the contact line or the catenary.
2. The overhead line system deicing system of claim 1, wherein: the deicing machine comprises a stepping motor, a telescopic motor, a metal connecting piece, a vibrating rod, a flexible shaft hose assembly, a vibrating rod motor and a frequency converter, wherein the vibrating rod motor is arranged on a rotating shaft of the stepping motor, the telescopic motor is arranged on the vibrating rod motor, a telescopic rod of the telescopic motor is connected with the vibrating rod through the metal connecting piece, the frequency converter is arranged beside the vibrating rod motor and used for controlling the rotating speed of the vibrating rod motor so as to adjust the vibration amplitude and frequency of the vibrating rod, the flexible shaft hose assembly is arranged between the vibrating rod and the vibrating rod motor, the frequency converter is controlled by a control circuit board to supply power to the vibrating rod motor, a power supply for adjusting the rotating speed of the vibrating rod motor by adjusting the output of the frequency converter is used, a dispatching center sends a deicing command to a convergence node through a 5G communication technology, the convergence node transmits the command to the control circuit board, and the, rotating the output end of a vibrating rod motor between a contact wire and a catenary cable, controlling a telescopic motor to pull a vibrating rod to move to the contact wire or the catenary cable, generating vibration on the vibrating rod by the output of the vibrating rod motor, transmitting vibration force to the contact wire or the catenary cable through the vibrating rod, generating vibration on the contact wire or the catenary cable, removing coated ice, controlling the telescopic motor to contract by a control circuit board when the contact wire needs to be deiced, pulling the vibrating rod downwards to make the vibrating rod contact with the contact wire so as to deice the contact wire, controlling the telescopic motor to lift by the control circuit board when the catenary cable needs to be deiced, pushing the vibrating rod upwards to make the vibrating rod contact with the catenary cable so as to deice the catenary cable, controlling a stepping motor to reversely rotate by the control circuit board after the deicer is finished, and rotating the vibrating rod on the vibrating rod motor to the other side, the vibrating rod is prevented from interfering the train running on the contact line.
3. The overhead line system deicing system of claim 1, wherein: the icing sensor comprises a plastic shell, electrode plates, a signal conditioning circuit board and an electric heating wire mesh, wherein the two same electrode plates are placed in the plastic shell and used as electrode plates of a capacitor, the electric heating wire mesh is arranged below the plastic shell, the signal conditioning circuit board is installed on the surface of the plastic shell, when the contact net freezes, the plastic shell can also freeze, the ice blocks and the two electrode plates form a capacitor when the ice blocks freeze in the plastic shell due to the fact that the dielectric of the ice blocks and the dielectric of other substances are different, along with the increase of the ice blocks, the capacitance is larger and larger, the change value of the capacitance is received through the signal conditioning circuit board, information processed by the signal conditioning circuit board is transmitted to the minimum system of the single chip microcomputer, the content of the ice in the plastic shell is calculated in the minimum system of.
4. The overhead line system deicing system of claim 1, wherein: the control circuit board is provided with a ZigBee terminal node, a singlechip minimum system, a PLC control board and a relay, the ZigBee terminal node and the convergent node are in wireless connection communication, the singlechip minimum system is used for receiving information detected by an icing sensor, whether the current overhead contact system is iced or not is calculated in the singlechip minimum system, when the overhead contact system is iced, the singlechip minimum system controls the ZigBee terminal node to send the icing information of the overhead contact system to the convergent node, then the icing information of the overhead contact system is sent to a PC (personal computer) of a railway dispatching center through the convergent node, then the railway dispatching center sends an deicing instruction to the PLC control board through the PC, the convergent node and the ZigBee terminal node, the PLC control board controls a frequency converter, a stepping motor and a telescopic motor to work, a vibrating bar extends to a contact line or a catenary to deice, and after the deicing is finished, the, so that the heating wire heats and removes ice blocks in the icing sensor.
5. The overhead line system deicing system of claim 1, wherein: the sink node includes the zigBee router, the 5G module, the STM32 control panel, the zigBee router, the electric connection relation is established with STM32 control panel to the 5G module, receive the information that zigBee terminal node transmitted by the zigBee router, carry to the STM32 control panel, transmit received information to railway dispatching center and train by STM32 control panel control 5G module, remind the staff this interval on the contact network the icing condition that appears, by railway dispatching center staff through the PC, the 5G module is with deicing instruction send to STM32 control panel, STM32 control panel control zigBee terminal node sends deicing instruction to the PLC control panel.
6. The overhead line system deicing system of claim 3, wherein: the signal conditioning circuit board is provided with a bridge circuit, a signal amplifying circuit, a filter circuit and an analog-digital conversion circuit, wherein the two electrode plates are connected with a resistor in parallel to form a bridge arm of the bridge circuit, when ice blocks exist between the two electrode plates, the bridge circuit is unbalanced and outputs voltage signals, the signal amplifying circuit amplifies the changed voltage signals, the filter circuit filters noise waves, and the analog-digital conversion circuit converts the acquired analog signals into digital signals and transmits the digital signals to the minimum system of the single chip microcomputer for calculation and analysis.
7. The overhead line system deicing system of claim 4, wherein: the ZigBee terminal nodes and the ZigBee router are networked, a set of icing sensor and a set of deicing machine are installed above each support column of a contact network, all ZigBee terminal nodes between every two sites form a group of monitoring nodes, the monitoring nodes are all networked with the ZigBee router, the ZigBee communication protocol is converted into a 5G communication protocol through an STM32 control panel, information collected by all monitoring nodes in the area is transmitted to the terminal nodes through a control 5G module, the terminal nodes comprise a PC (personal computer) and a train of a railway dispatching center, and an Internet platform with ZigBee communication and 5G communication is formed.
8. The overhead line system deicing system of claim 1, wherein: the process of the deicing machine for deicing the contact wire and the carrier cable comprises the following steps: firstly, initializing a system, collecting icing information on a contact net by an icing sensor, when the icing condition on the contact net is collected, controlling a ZigBee terminal node to send icing information of the contact net to a sink node by a minimum system of a single chip microcomputer, then sending the icing information of the contact net to a PC (personal computer) of a railway dispatching center and a train in a section through the sink node, sending dispatching information of power-off parking to the section when workers judge that the contact net in the section needs to be deiced, sending deicing instructions to a PLC (programmable logic controller) through the PC, the sink node and the ZigBee terminal node, controlling a frequency converter, a stepping motor and a telescopic motor to work by the PLC, enabling a vibrating bar to extend onto the contact net or a catenary to deiced until the deicing is finished, sending an instruction of deicing completion to the PLC by the dispatching center, and controlling the vibrating bar motor to stop working by the PLC, and the stepping motor is controlled to rotate reversely, the vibrating spear on the vibrating spear motor is rotated to the other side, the vibrating spear is prevented from interfering the train running on a contact line, then the railway dispatching center sends information that the deicing is finished and the train can be communicated to the inside of a section, the train is electrified to run, and meanwhile, the control circuit board controls the relay to work, so that the electric heating wire is heated, and ice blocks in the icing sensor are removed.
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| CN202011485362.6A CN112653060B (en) | 2020-12-16 | 2020-12-16 | Contact net deicing system |
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