EP3956196A1 - Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugs - Google Patents
Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugsInfo
- Publication number
- EP3956196A1 EP3956196A1 EP20728970.3A EP20728970A EP3956196A1 EP 3956196 A1 EP3956196 A1 EP 3956196A1 EP 20728970 A EP20728970 A EP 20728970A EP 3956196 A1 EP3956196 A1 EP 3956196A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- speed
- account
- designed
- speed value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
- B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
Definitions
- the speed of rail vehicles and their position is determined, for example, with the help of radar and distance pulse sensors, which is often referred to as odometry. These values for speed and position are required for modern train control systems or train monitoring systems such as ETCS.
- GPS and acceleration sensors for example, can also be used to increase the accuracy and reliability of the speed determination.
- the radar sensors used usually work in the gigahertz range and determine the speed of the rail vehicle with the help of reflections on structures in the route area.
- the problem here is that, for example, the radar sensors or the trackside sensors can ice up in winter
- the acceleration sensors additionally or alternatively used in odometry register changes in speed of the rail vehicle.
- the speed is determined, for example, by integrating the acceleration.
- the problem here is that a Errors in the calculated speed can increase over time.
- the invention solves the problem on the one hand by a Vorrich device for determining the speed of a rail vehicle with at least two vehicle-side receiving antennas arranged at a distance from one another in one direction of travel, each of which is suitable for receiving an electromagnetic radiation emitted by a track-side transmitter, in particular a balise
- At least one signal device connected to the receiving antennas which is designed to determine signals received by the receiving antennas
- at least one computing device which is designed to calculate a speed value taking into account the first and second signals and the state of the receiving antennas.
- the object is achieved according to the invention by a method for determining the speed of a rail vehicle, in which a first signal is received in a first vehicle-side receiving antenna and a second signal in a second vehicle-side receiving antenna, the first signal and the second signal from at least one stre be sent out on the corner side transmitter, and in which a speed value is calculated taking into account the first signal and the second signal and a distance between the first and the second receiving antenna.
- the solution according to the invention has the advantage that the speed of the rail vehicle can be determined very precisely, for example when driving over a Eurobalise.
- Eurobalises for example, are on ETCS-equipped routes at relatively short and regular intervals of for example a few hundred meters to two kilometers.
- the invention at least at certain points during the journey of the rail vehicle, there is always a very precise speed value that significantly improves the accuracy of the odometry of the vehicle.
- the at least two receiving antennas can each be designed as a substantially vertically or horizontally oriented loop.
- This has the advantage that there is a minimum or maximum of the received signal when the trackside transmitter is passed, which can be evaluated particularly well.
- a track-side Eurobalise sends its uplink signal at 4.2 MHz while the vehicle's receiving antenna is being passed.
- This uplink signal is generated by a current in a vehicle-side transmission loop, which can also be referred to as Sen deloop.
- the minimum or maximum in the respective signal received by the receiving antennas is present when the vertically or horizontally oriented loop is located exactly above the center of the trackside Sendeein direction in the direction of travel of the rail vehicle.
- the computing device can be designed to take into account a time offset between the first signal and the second signal in order to calculate the speed value. This has the advantage that the time offset can easily be determined and a simple speed calculation is therefore possible.
- the computing device can be designed to add a time offset in a phase of the first signal and the second signal in order to calculate the speed value consider.
- the phase relationship of the two signals to one another can easily be determined in the computing device.
- the phase position changes at this point, so that these points of maxima or minima in the first and / or second signal can easily be determined.
- phase changes can also be used to determine the time interval between the signals.
- the computing device can be designed to take into account a time offset in a cross correlation from the first signal and the second signal in order to calculate the speed value. This has the advantage that the calculation of the speed is further simplified.
- the invention further relates to a rail vehicle with a device for determining speed, which is constructed according to one of the aforementioned embodiments.
- the rail vehicle can have at least one acceleration sensor which is designed to determine a speed change
- the computing device in particular between trackside transmitting devices, can be designed to calculate a speed value taking into account the speed change.
- the speed value can be calculated taking into account a time offset between the first signal and the second signal, can be calculated taking into account a time offset in the phase of the first signal and the second signal, or taking into account a time offset in a cross-correlation can be calculated from the first signal and the second signal.
- the determination of the speed can thus be simplified in each case.
- the speed value in particular between trackside transmitting devices, can be calculated taking into account a change in speed.
- Fig. 1 is a schematic representation of an exemplary embodiment of an inventive
- FIG. 2 shows a schematic three-dimensional representation of the embodiment in FIG. 1; 3 shows a schematic representation of a field distribution of a trackside transmitter from FIGS. 1 and 2;
- FIGS. 1 and 2 are schematic representations of an exemplary signal curve in the vehicle-side Emp receiving antennas from FIGS. 1 and 2;
- Fig. 5 is a schematic representation of a phase ver
- the 1 shows a rail vehicle 1, such as, for example, a train, subway or tram, which travels a route 2 in a direction X of travel.
- the route 2 comprises two rails 3 and 4 arranged in parallel.
- the route 2 has several track-side transmission devices 5, which can be transponders, in particular in the form of balises, such as are known in the field of rail technology as Eurobalises, for example.
- the rail vehicle 1 comprises a device 6 for determining the speed, which has at least two receiving antennas 7a, 7b.
- the front receiving antenna 7a in the direction of travel X and the rear receiving antenna 7b in the direction of travel X each have a vertically oriented conductor loop or a vertically oriented conductor coil formed by a plurality of conductor loops. If the rail vehicle 1, based on the illustration in Fig. 1, approaches the route-side transmitting device 5 and over it, the first or front receiving antenna 7a of the device 6 is generated in the area of the route-side transmitting device 5 Reach the magnetic field. As a result, a corresponding received signal 8a is generated in the receiving antenna 7a (see FIG. 4).
- the trackside transmitter 5 is designed as a balise and comprises a horizontally oriented conductor loop 9.
- a corresponding signal 8b is also generated in the second receiving antenna 7b with a position and time offset when the trackside transmitter 5 is passed.
- Fig. 3 shows an exemplary field distribution of the magnetic field of an uplink signal of the trackside Sendeeinrich device 5, which is for example a Eurobalise.
- the vertically oriented receiving antennas 7a, 7b are arranged in the exemplary embodiment in the figures within an antenna housing 14, which is designed as a metallic half-shell.
- its receiving antenna 7a is located in the direction of travel X essentially centrally above the loop 9 of the trackside transmitter 5.
- the receiving antennas 7a, 7b and the conductor loop 9 are relative to each other like this arranged so that they are always centered to one another, even across the direction of travel X (i.e. in direction Y).
- the device 6 for determining the speed further comprises a signal device 10 connected to the receiving antennas 7a, 7b, which is designed to determine the signals 8a, 8b received by the receiving antennas 7a, 7b.
- the device 6 further comprises a computing device 11 which is designed to calculate a speed value of the rail vehicle 1.
- the signaling device 10 determines the signals 8a, 8b received by the receiving antennas 7a, 7b, which are shown in FIG. 4.
- the receiving antennas 7a, 7b are arranged in the direction of travel X at a known distance d from one another.
- the trackside transmitter 5 sends its uplink signal at 4.2 MHz in a known manner.
- the uplink signal is generated by a current in a transmission loop (not shown).
- the magnetic field shown in Fig. 3 thereby generated induces the signals 8a, 8b in the vehicle receiving antennas 7a, 7b. If the vertically oriented receiving antennas 7a, 7b are located exactly above the center of the conductor loop 9 of the trackside transmitter 5, the received signal 8a, 8b is minimal.
- These Mi nima 12a, 12b of the signals 8a, 8b can be seen in FIG.
- a time offset t between the signals 8a and 8b can be determined, for example, via the time interval between the minima 12a, 12b (as mentioned above), via a cross-correlation or also via the phase of the signals 8a, 8b.
- the phase position between the signals 8a, 8b is shown in Fig. 5 Darge provides. As shown in FIG. 5, the phase position changes at the minima 12a, 12b of the signals 8a, 8b. These phase changes can also be used to determine the time interval t between the signals 8a, 8b.
- the computing device 11 is designed to calculate a speed value of the rail vehicle 1 taking into account the first signal 8a and the second signal 8b and the distance d between the receiving antennas 7a, 7b.
- the rail vehicle 1 includes Furthermore, an acceleration sensor 13, which is designed to determine a change in speed of the rail vehicle 1 is formed.
- the computing device 11 is also designed to calculate a speed value from the speed change determined by the acceleration sensor 13.
- the rail vehicle 1 according to the invention can also determine a speed value of the rail vehicle 1 at points between the passages of track-side transmission devices 5.
- This speed value determined from the change in speed which can have a measurement error that increases over time, is corrected by the value determined according to the invention each time a trackside transmitter 5 is passed over. As a result of this regular correction, the measurement error remains low overall and below an acceptable limit.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019207844.3A DE102019207844A1 (de) | 2019-05-28 | 2019-05-28 | Vorrichtung und Verfahren zur Geschwindigkeitsbestimmung eines Schienenfahrzeugs |
| PCT/EP2020/063253 WO2020239438A1 (de) | 2019-05-28 | 2020-05-13 | Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3956196A1 true EP3956196A1 (de) | 2022-02-23 |
Family
ID=70918390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20728970.3A Pending EP3956196A1 (de) | 2019-05-28 | 2020-05-13 | Vorrichtung und verfahren zur geschwindigkeitsbestimmung eines schienenfahrzeugs |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3956196A1 (de) |
| DE (1) | DE102019207844A1 (de) |
| WO (1) | WO2020239438A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113781775A (zh) * | 2021-08-19 | 2021-12-10 | 南京交通职业技术学院 | 一种城市轨道交通多信号实时处理方法及系统 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10197681B2 (en) * | 2014-12-26 | 2019-02-05 | Furuno Electric Co., Ltd. | State calculating device, method of calculating state, and state calculating program |
| EP3461715B1 (de) * | 2017-09-29 | 2021-07-21 | Siemens Mobility GmbH | Bordvorrichtung für ein schienenfahrzeug |
-
2019
- 2019-05-28 DE DE102019207844.3A patent/DE102019207844A1/de not_active Withdrawn
-
2020
- 2020-05-13 EP EP20728970.3A patent/EP3956196A1/de active Pending
- 2020-05-13 WO PCT/EP2020/063253 patent/WO2020239438A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019207844A1 (de) | 2020-12-03 |
| WO2020239438A1 (de) | 2020-12-03 |
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Owner name: SIEMENS MOBILITY GMBH |