WO2005105536A1 - Train integrity network system - Google Patents
Train integrity network system Download PDFInfo
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- WO2005105536A1 WO2005105536A1 PCT/AU2005/000624 AU2005000624W WO2005105536A1 WO 2005105536 A1 WO2005105536 A1 WO 2005105536A1 AU 2005000624 W AU2005000624 W AU 2005000624W WO 2005105536 A1 WO2005105536 A1 WO 2005105536A1
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- bogie
- units
- network
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- train
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/40—Handling position reports or trackside vehicle data
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or train
- B61L15/0027—Radio-based, e.g. using GSM-R
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0054—Train integrity supervision, e.g. end-of-train [EOT] devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0081—On-board diagnosis or maintenance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2205/00—Communication or navigation systems for railway traffic
- B61L2205/04—Satellite based navigation systems, e.g. global positioning system [GPS]
Definitions
- US 5,433,111 discloses apparatus and a method for detecting defective conditions in both the train wheels and the rail tracks using a mobile tracking unit to record the location of the latter.
- US 6,435,027, US 6,471,407, US 5,631 ,426, US6,378,373 and US 5,022,267 all teach various combinations of motion and temperature sensors to signal component failure and US 6,474,832 teaches a self regulating axle mounted device for generating electrical energy to power such apparatus.
- the wireless communications system must have the ability to operate in an ad-hoc environment where the sensor units on the wagon wheels have no prior knowledge of each other but must be automatically configured to cooperate with each other in a particular train consist. Also the system must have built in redundancy, that is, the monitoring system of the server in the locomotive must be ready to act in the case of a critical situation even if signalling from specific units has failed; the failed axle units must be identified and the network automatically reestablished to maintain monitoring.
- a train integrity network system (TINS) to perform the following functions: • measuring coupling tension between wagons to enable more efficient loading and train management • monitoring pack components such as sandwich packs, yokes and air supply. detecting coupling failure between wagons monitoring wheel slip and braking malfunction detecting wheel damage, failure and derailment detecting axle fatigue • monitoring the security of unloading and discharge doors monitoring wear surfaces monitoring wheel wear and profile tracing the cause of steering defects lighting the side of trains to ensure visibility at rail crossings • tracking location of individual wagons tracking the consignment of mixed goods electronic monitoring of interactions with wayside operation systems warning rail crossing users of train proximity provision of warning and prevention of train to train and other collision dangers • provision of real time monitoring of railway crossings and rail station crossovers to prevent vehicular and pedestrian accidents • provision of an alternative to conventional signalling methods based on global information systems • detecting and locating track failure using global information systems.
- integrity network systems Although developed for use in trains, such integrity network systems have a wide range of potential application in a variety of vehicles such as trams, mining machinery and road trains.
- the network can also be used to monitor and relay structural integrity and to collect data and security information in a range of applications such as buildings, bridges, engineering infrastructure and public places.
- a train integrity network system comprises two or more bogie units which monitor critical parameters relating to the condition of bogie components and the rail track they are travelling on, an onboard server which controls the bogie units and a wireless network which enables communication between the server and the bogie units.
- the bogie units have sensors to monitor the temperature of the wheel hubs of the bogie.
- the bogie units have sensors to monitor the temperature of the wheel perimeters of the bogie.
- the bogie units have motion detectors to monitor movement of the bogie axle in vertical and horizontal directions.
- the bogie units have accelerometers to monitor acceleration of the bogie axle.
- the bogie units have means to measure the speed of rotation of the bogie wheels.
- the bogie units are powered by an electrical generator which utilises the rotation of the bogie wheels.
- the bogie units have a processor which compares the critical parameters against defined standards.
- the bogie units have a wireless transceiver which enables communication with other bogie units and the server.
- the bogie units have a source of illumination.
- the wireless network utilises master/slave base band role switching.
- the wireless network has store-and-forward nodes which convey quasi real time data to the server.
- the wireless network has frequency hopping modes.
- the server can download data to a wayside database.
- the system has a GPS unit to record the location of the train at any time.
- the system has an end-of-train monitoring function.
- the system has a collision avoidance function.
- the system has a level crossing warning function.
- the system transmits a warning signal to vehicles approaching a level crossing which are equipped to receive said signal.
- the system monitors tension and compression in the train wagon couplings.
- Figure 1 illustrates the general arrangement of the store and forward function of individual bogie units and their master/slave automatic configuration
- Figure 2 illustrates the overall network architecture of the system
- Figure 3 illustrates the architecture of a bogie unit
- Figure 4 shows the sensor circuit board layout of a bogie unit
- Figure 5 illustrates the server architecture
- FIG. 6 illustrates a TINS network of 4 unit depth and 3 unit width
- Figure 7 illustrates the TINS network of Figure 6 during the establishment phase
- Figure 8 illustrates the basic establishment methodology of the TINS network
- Figure 9 illustrates the network discovery messaging of the TINS network
- Figure 10 illustrates the RSSI and wheel number division of time during network discovery
- Figure 11 illustrates the extension of the network
- Figure 12 is the network establishment flowchart
- Figure 13 shows the network establishment frequency use
- Figure 14 shows the progression of hopping channel with each control frame
- Figure 15 shows an ideal coverage map for a network of 5 unit depth and 2 unit width
- Figure 16 is a transmit data flowchart
- Figure 17 is a receive data flowchart
- Figure 18 shows the RF section of a bogie unit
- Figure 19 is a schematic of a bogie unit
- Figure 20 is a photograph of a bogie unit
- Figure 21 shows the layout of a bogie unit with remote infrared censor
- Figure 22 is a schematic of the bogie unit software architecture.
- the TINS has two main components, namely, the bogie units which incorporate the wireless communication system, and the onboard server unit.
- the bogie units monitor in real time various wheel and track factors including rotation, vibration, g- force acceleration and bearing temperature, as well as the causes of differential temperature effects.
- the information is analysed in a processor in the bogie unit by means of algorithms which have been developed to recognise a range of specific component conditions. If a monitored condition exceeds a predetermined threshold or parameter the processor will generate an alarm which is transmitted via a RF network to the server.
- the server then notifies the driver via a control console, of the specific exception, including the condition, the position of the bogie in the train consist, the last ten minutes of trend information and a menu of corrective actions to be taken.
- the bogie units comprise: • various temperature, motion and acceleration sensors a microprocessor to analyse signals from the sensors non volatile memory for data storage a radio modem for communicating with the on board server and other bogie units a power generation and regulation system an external housing programming software an antenna and strobe lighting
- the server comprises: a laptop or other personal computer three radios and related modems antennas a GPS transponder programming software a data storage device and a video compression engine
- the bogie units can detect: a hot axle box flat and broken wheels wheel slip and wheel derailment end-of-train and train handling brake failure and hot wheels hunting wheel sets and track conditions such as corrugations, cracked and broken rails and horizontal and vertical defects.
- the core of the TINS is a RF/Digital wireless communications backbone which links the monitoring and processing hardware and software of the bogie units with the server and each other.
- the units are installed on each end of a bogie and monitor a range of parameters which detect the above conditions. This information is then relayed through the wireless backbone to alert the driver to intervene manually or to trigger an automatic response in critical situations.
- There is a "heart beat" protocol within the TINS which establishes that the bogie units are on-line and fully operational and reports any that have failed. Accordingly the TINS not only guards against derailments but improves performance and efficiency thus reducing operational costs.
- a critical aspect of the TINS is the ability of the bogie units to self-configure, that is when wagons are coupled into a train consist there is no shared information between the units and the server. However, once the consist is assembled and the units power up , they can be either manually or automatically booted so that they start to communicate with each other and within several minutes become united in the one network with the sever to provide whole train integrity. If one of the units fails the adjacent units leap-frog to the next operating unit to maintain the train's "heart beat" which is essential for operational redundancy. Since it has an open architecture, the TINS can also host a range of additional "smart" monitoring and warning systems such as collision avoidance.
- Figures 1 and 2 illustrate the overall network architecture between the units, the server, a database slave unit, both located in the loco, a database located in a station and a remote management server.
- the server When the train powers up, the server establishes a fully connected network of master, repeater, and slave units. This network then transmits signals generated by the sensors to the server where the data is collated.
- a radio modem is used to download the data to a wayside database which is connected to a remote management server via an IP network.
- the station databases provide the statistics for final collation and analysis by the management server.
- Figures 19 and 20 show a schematic and a photographic view respectively of the bogie units while Figures 3 and 4 illustrate their architecture and sensor circuit board layout respectively.
- the power required for each unit is generated by a multiphase AC alternator in which the stator is the coil assembly and the magnets are fixed to a circular disc that spins at wheel velocity.
- the multiphase AC output is proportional to wheel velocity (within certain constraints) and is rectified, regulated and processed by a regulator module.
- the power regulator supplies power to a single Piccolo radio module PCB shown in Figure 18, the sensor circuit board as shown in Figure 4, and the sensors; the Piccolo module is powered directly but the other components are only supplied with power when the Piccolo has become active and enables the sensor power switch.
- the sensor power switch is only activated when the Piccolo has determined that there is sufficient power from the bogie units to supply the sensor sub-system; this is done my monitoring the raw voltage output of the power supply regulator circuit.
- the outputs of the sensors are analog DC voltages proportional to temperature and are converted to digital signals via an analog to digital converter (ADC). These signals are then converted to degrees C, low-pass filtered, and compared against alarm triggering levels. If the filtered temperature exceeds the prescribed alarm level an alarm is triggered and is not cleared until the temperature falls below a second prescribed level, thus providing hysteresis.
- ADC analog to digital converter
- Vibrations in the vertical and horizontal planes of the wheel are measured by two orthogonally mounted accelerometers.
- the accelerometer outputs are analog DC proportional to acceleration between defined limits. These outputs are converted to digital via an ADC, converted from ADC units (voltage) into real-world units (G's), low-pass filtered, and compared against an alarm level. If the filtered acceleration exceeds the prescribed alarm level, then an alarm is generated.
- Approximate wheel velocity is derived from the power generator supply voltage which is divided down and converted to digital via an ADC. The result is then converted into a voltage which is proportional to rate of rotation. However precise wheel velocity is determined by a Hall Effect device attached to the rotating magnet assembly which produces a pulse output for each completed wheel revolution.
- the microprocessor module of the bogie units uses high speed programmable logic arrays to process the incoming data from the sensors described above so that it is not overloaded with tasks which reduce its response time and limit its ability to control the RF section.
- a flow diagram of the programming software for the units is given in Figure 22. Communication between the processing module and the microprocessor module is via a parallel bus which enables the fastest communications possible.
- This module performs the following functions: ⁇ Processing alarms generated by the module and activating the data radio. ⁇ Providing instructions to the processing module. ⁇ Providing non-volatile storage of temperature and vibration data for continuous transmission in the event of a valid alarm condition. Q Managing a serial data protocol for external communications and programming. ⁇ Establishing routines for "heartbeat" responses ⁇ Managing the data radio background functions. ⁇ Managing store and forward functionality and redundancy.
- a high speed digital radio which has its power and antenna outputs controlled by the microprocessor module is used to transmit to and receive from other bogie units and the server.
- the radio performs dual roles of a network repeater or an end point station depending on the network configuration and its position in the train consist.
- the antenna system is designed to focus the RF energy forward and backward along the axis of the train so that other units will be radiated by the RF lobe maxima.
- the range of the signal is controlled by the power output of the transmitter which is in turn controlled by the microprocessor. Spectrum reuse is paramount in a very long consist and so the range of the units' data radio has to be controlled.
- Figure 5 is a schematic of the six components of the server namely a network protocol parser and generator, a service layer, an automatic network control and data gathering, real time trending, data storage and trending and a user interface.
- the protocol generator and parser generates request packets for the data radio and parses response packets for the service layer to interpret.
- the service layer provides individual status of the wheel with alarm reporting, individual status of the wheel without alarm reporting, and network status and alarm reporting on the entire network.
- the automatic network control and data gathering performs automatic status retrieval from bogie units on the network, alarm generation from status retrieved, individual monitoring of units and interface to real-time graphical trending.
- the latter also displays data graphically as it arrives in the automatic network control and data gathering component and visually indicates alarm conditions.
- the data storage and trending includes a database with the option to graph the time stamped data stored and to apply algorithms to it. Connection from the server to the bogie units is via a data radio and the server can be connected to an external wireless network such as a satellite data modem or a WLAN or any standard data radio in order to report to a remote management centre.
- the TINS wireless network architecture is shown in Figure 6 as a series of interconnected units arranged in layers having a depth of four units and a width of three units.
- the depth of a network is the maximum number of units that a message must travel through in order for it to move between the master and the furthest unit and the width is the maximum number of units in each layer.
- the network can be in one of two modes, an establishment mode or an operational mode.
- one unit from each layer is designated as the primary and only that unit can transmit messages to or receive messages from units below it in the network as shown in Figure 6.
- any units in layer ⁇ can communicate with units in layers n+1 and n-1.
- each unit communicates with a single unit in the lower layer, and a single unit the upper layer, effectively creating a number of different networks equal to the network width.
- a unit may communicate with more than one unit in the layer above or below it and in the network establishment mode shown in Figure 7, only Moo, U ⁇ o, U21, and U 3 o can transmit messages to units in lower layers or receive messages from units in lower layers.
- a maximum of 6 units per layer is supported within the network.
- the TINS wireless network also uses a time division store and forward communications architecture with multiple redundant communication paths while in full operation. All data is transmitted in fixed width slots and any one slot may contain one or two frames depending on the format of the slot.
- a downlink slot contains data to be transmitted from the master to a single unit or to all units. Data transmitted in a downlink slot is not acknowledged by receiving units within the same downlink slot.
- Downlink slots are used to transmit data down the communications network.
- An uplink slot contains data to be transmitted from a single unit to the master. Data transmitted in an uplink slot is acknowledged by the receiving unit within the slot.
- Uplink slots are used to transmit data up the communications network.
- a connect slot allows unconnected units to announce themselves and permit connection to the network.
- the network establishment mode is entered during start-up the set of available units is discovered, and the role of each unit in normal operation is allocated. While undertaking network establishment, there is no redundancy and a unit failure will result in the restarting of network establishment.
- the operational mode is entered and the network supports multiple redundant communication paths. In this mode the network performs the following functions.
- the units asynchronously report alarm conditions to the master; the alarms are propagated from the generating unit to the master via the communications network.
- the stati of the sensors on a single unit are reported to the master in real-time; the last ten minutes of data for the internal sensors is also transmitted to the master when this function is operating.
- the units also pass on debugging information.
- Each unit in the TINS network has three pre-configured addresses, and one dynamically allocated address.
- the three pre- configured addresses are:
- GUID Globally Unique Identifier
- Carriage Identifier A 25-bit user configured address. All wheel units on the same carriage must have the same carriage address.
- Wheel Number A 3-bit user configured address. This indicates which wheel on the carriage a particular unit relates to. The wheel numbering can be found in the PRS.
- the wheel number of carriage identifier go together to form a 32-bit Carriage Unique Identifier (CUID).
- the dynamically assigned address is the Dynamically Allocated Hopping Pattern (DAHP).
- the DAHP sets the frequencies that the unit transmits and receives on, and uniquely identifies the unit in the network.
- d The depth of the network.
- w The maximum width of the network.
- b m The number of bytes in a monitoring upload slot.
- m The amount of bandwidth (in bits per second) available for monitoring.
- n c The number of channels.
- n u The number of uplink slots per downlink slot used in normal operation.
- t e (x) The amount of time (in seconds) required to complete a request or response cycle during network establishment for a network of depth x.
- t d The amount of time (in seconds) required to complete a single discovery cycle on a network of depth x.
- t d own(x) The amount of time (in seconds) required for a message to propagate from the master to a unit at depth x. This is only applicable in normal operation.
- t up (x) The amount of time (in seconds) required for a message to propagate from a unit at depth x to the master. This is only applicable in normal operation.
- t x (x) The amount of time (in seconds) required to complete a single network extension on a network of depth x. t ⁇ The total time taken to achieve lock. t perennial The total amount of time (in seconds) required to complete network establishment.
- f s The slot time in seconds.
- n c the number of channels and t s is the maximum slot time. After this time it moves to the next channel and continue listening. If a downlink frame is detected it checks the child address list for this unit's GUID. If it is found it then locks and hops with that unit. If a connect frame is detected, it locks and hops with that unit until the connect frames stop being transmitted and generates connect responses occasionally until acknowledged.
- Network establishment is controlled by the master unit in the locomotive and the TINS network operates in a simple request / response mode as shown in Figure 8.
- Requests are generated by the master, and each unit continually re-transmits the same request until the master changes the request it is transmitting.
- Each request is directed to a single unit. Once the unit has completed the request, it passes a response back to the master via the network.
- a DISCOVER-REQ message is transmitted from the master, and propagated down to a single destination.
- the unit enters discovery mode and allows all unconnected units to transmit CONNECT messages.
- the connect message contains the following information: the GUID and the CUID of the transmitter, the RSSI between the connected and unconnected units and the number of failed connect attempts.
- Each CONNECT message is acknowledged by the connected unit. Once an unconnected unit has been acknowledged, it no longer attempts to transmit.
- the number of slots available for unconnected units to transmit is broadcast by the connected unit.
- the number of slots allocated to locking must take into account this period of potential dead-time at the start.
- the parameters for received signal strength intensity (RSSI) and wheel number are available for controlling unconnected unit transmissions to minimise the possibility of collision.
- RSSI received signal strength intensity
- wheel number select the slots that unconnected units may transmit as shown in Figure 10
- Network extension occurs after network discovery and is used to extend the network by adding an additional layer.
- the messages used for network extension are shown in Figure 11 If network discovery is performed by U 30 , then the network extension command will be passed to U 2 o- It is then the responsibility of U 2 o to pass the network extension command to all its children (U30 through U 33 ) and verify that each one received the command.
- the network extension request contains the following information: the DAHP for each unit in the layer below the destination, the children of each unit the layer below the destination and the primary for each child of the layer below the destination.
- the flowchart for network establishment is shown in Figure 12as a repetitive two step process. In the first step the available units are discovered, while in the second step the network is extended to accept these new units. This process is repeated until no new units are discovered. Network establishment is 0(cF) in complexity. The total time required to perform network establishment is given by:
- Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater.
- the system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter.
- the system receivers shall have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals.
- Frequency hopping systems operating in the 2400-2483.5 MHz and 5725-5850 MHz bands shall use at least 75 hopping frequencies.
- the maximum 20 dB bandwidth of the hopping channel is 1 MHz.
- the average time of occupancy on any frequency shall not be greater than 0.4 seconds within a 30 second period.
- each frequency must be used with the same regularity and the occupancy of any frequency must not be greater than 0.4 seconds in any 30 second period.
- the wheel units use a set of 256 unique hopping patterns. All hopping patterns are of a fixed length equal to the number of available channels, where each channel is visited exactly once. Hopping pattern position is derived from the master, thus each unit in the network visits the first channel in its hopping pattern at the same time. Based on these properties, hopping patterns can be selected that minimize interference.
- the allocation of frequencies during network establishment shown in Figure 13 is unbiased ie no favour is given to any particular frequency, nor is any particular frequency used for a particular purpose.
- Each transmitter effectively uses two hopping patterns equally, its own and the hopping pattern of the unit above. Thus, on average each frequency is used with the same regularity by each transmitter as both hopping patterns contain all frequencies.
- the hopping pattern progresses by 1 each time the master transmits a downlink slot.
- the connect slots use the hopping patterns by progressing the hopping pattern index by one on each slot.
- a change in frequency occurs with each control frame the hopping channel index increases by 1 for each control frame.
- the downlink frame contains two parameters used to control hopping pattern progression: the offset number which is the number of slots that the transmitters downlink frame transmission is offset from the master's downlink frame transmission and the current hopping pattern index number which gives the transmit frequency.
- Hopping patterns can be calculated for minimum interference by using the following properties of the network: • Units are arranged in layers, where any unit in layer n can hear units in layer n+1 and n-1. We will also assume that it is possible to hear units in layers n+p and n-p, where p is the RF propagation factor.
- the result of the LCG is to pick one of the remaining frequencies for each hopping pattern, where frequencies that would interfere are not allowed to be selected.
- the TINS provides real time monitoring of critical factors and impact risk assessment of failure immediately and not at some future time or distant monitoring wayside station. There exists an immediate option for the driver to decide whether to stop the train, reduce speed till the defective wagon can be removed form the consist or take other action. All the while real time monitoring of the alarm condition is displayed to the driver including the last ten minutes of operation since the condition occurred . A decision can be made on the validity of the alarm, the event that may have caused the alarm and therefore the expected risk of continuing.
- the TINS system also provides an end-of-train monitoring system via the bogie units of the last wagon without the need for additional equipment and is independent of the length of the train or the effect of tunnels or terrain, unlike existing wireless end-of- train systems.
- train simulation software TSS
- TINS train simulation software
- This feature enables the driver to better manage train dynamics as well as run in and run out.
- DCPS ACS data common protocol
- the display on the locomotive server will show the relative velocity of each train, the distance of separation to a one metre resolution, a spatial map showing the position of and proximity to track infrastructure, including which track each trains occupies, which determines the risk of collision.
- This information will give drivers sufficient warning to react immediately or to contact a traffic controller for instructions. Accordingly, following train movements can be kept at a minimum separation regardless of visibility and cruise control options with locomotive throttle mechanisms also become possible.
- a crossing warning system can also be incorporated into the TINS.
- a radio broadcast is made continuously identifying the crossing with its code name with the broadcast range varied by the power of the radio system. With optimum antenna configuration and design, a range at maximum power of 2.5 kilometres is achievable.
- the proximity switching system installed at a road crossing senses that the crossing is, or is about to be obstructed by a vehicle or person, or in the case of an actively protected crossing the boom gates or bells are functioning, but fouled by traffic or people, the video system is activated. A real time video capture of the crossing is broadcast over the 2.5 kilometre range of the system.
- the crossing ID is recognised, tested for functionality and logged as such in the server database.
- Crossings not functioning are reported at specific reporting points along the route or can be reported online with satellite communications separately installed.
- the video capture of the crossing is stored in the server until the train has cleared the crossing. Accordingly, the driver is able to ascertain any risk prior to reaching the crossing and to take appropriate action. In the event that the time to stop the train is inadequate the system provides the train operator with a clear record of the responsible party to the accident.
- the crossing is logged in the database as being functional but no image is displayed to the locomotive driver.
- a record of events is collected and stored whilst the train itself intercepts the crossing. In the case of multiple crossings, the imagery is stacked sequentially based on the closest first.
- the video capture will record the events creating the accident, whether the cause of the track being fouled was before the arrival of the locomotive or after, in the case of a crash into the side of the train. The video capture is terminated once the train clears the crossing and if no interjection is made by the driver as a vigilance procedure the record is removed from the storage device for the particular crossing.
- This system is also able to transmit a warning signal to vehicles approaching a level crossing which are equipped to receive the signal and so reduces the train whistle objections raised by local residents.
- the surplus power generated by the bogie units whilst the train is in motion is used to operate strobe lighting on units thus illuminating the full length of the train and improving its visibility side on.
- the strobe lighting ceases and the bogie units go into hibernation mode.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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AU2005237656A AU2005237656B2 (en) | 2004-05-03 | 2005-05-03 | Train integrity network system |
US11/579,470 US20080195265A1 (en) | 2004-05-03 | 2005-05-03 | Train Integrity Network System |
EP05737892A EP1747135A4 (en) | 2004-05-03 | 2005-05-03 | Train integrity network system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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AU2004902285A AU2004902285A0 (en) | 2004-05-03 | Realtime Wireless Network for the Monitoring of Rail Vehicular Systems | |
AU2004902285 | 2004-05-03 |
Publications (1)
Publication Number | Publication Date |
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WO2005105536A1 true WO2005105536A1 (en) | 2005-11-10 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/AU2005/000624 WO2005105536A1 (en) | 2004-05-03 | 2005-05-03 | Train integrity network system |
Country Status (3)
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US (1) | US20080195265A1 (en) |
EP (1) | EP1747135A4 (en) |
WO (1) | WO2005105536A1 (en) |
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EP1747135A1 (en) | 2007-01-31 |
US20080195265A1 (en) | 2008-08-14 |
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