EP1695315A1 - Ermittlung des zu erwartenden geschwindigkeitsniveaus - Google Patents
Ermittlung des zu erwartenden geschwindigkeitsniveausInfo
- Publication number
- EP1695315A1 EP1695315A1 EP04803843A EP04803843A EP1695315A1 EP 1695315 A1 EP1695315 A1 EP 1695315A1 EP 04803843 A EP04803843 A EP 04803843A EP 04803843 A EP04803843 A EP 04803843A EP 1695315 A1 EP1695315 A1 EP 1695315A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- road
- vehicle
- traffic
- speed threshold
- data
- 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.)
- Granted
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- 238000000034 method Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 4
- 230000002411 adverse Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000013480 data collection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Definitions
- the invention relates to a method for providing traffic status data, a system for transmitting traffic status data, a device in a motor vehicle for generating and sending traffic status data and a computer program product for use in a motor vehicle and for generating and sending traffic status data according to the preamble of the independent claim concerned.
- FCD Floating Car Data
- the system used for this consists of a GPS receiver and a GSM module. Both modules are already available in many vehicles without FCD functionality.
- the GPS receiver measures the position and the FCD procedures determine travel times of the vehicle from many of these position data. These travel times are transmitted to the traffic data center as a string of pearls (individual points along the route with location coordinates and time stamps) via the GSM network. These can draw conclusions about the traffic situation from these travel times. In this way, data on traffic condition data for traffic information services is collected.
- FCD In order to collect the traffic situation more precisely in the future and additionally with information about weather, road conditions and local dangers, FCD will be developed into XFCD (Extended Floating Car Data).
- XFCD uses the various sensors and subsystems available in the vehicle, which already make their data available on central data buses in the vehicle.
- the evaluation of the various data while driving can provide information about traffic conditions, visual impairments, road conditions (road surface), infrastructural conditions (switchbacks), local dangers, precipitation, smoothness and slipping hazards.
- the object of the invention is a method for providing high-quality traffic condition data at acceptable costs.
- An essential aspect of the method according to the invention for providing traffic condition data in the context of a traffic condition detection by a motor vehicle, in particular traffic condition data for the traffic situation detection, preferably traffic condition data for traffic jam detection, is that in a first step the type of road on which the vehicle is moving using the device for Position detection and the digital road map is determined, in a second step the road category of the road on which the vehicle is moving is determined using the device for position detection and the digital road map, in a third step an assignment, in particular a table, is used which assigns at least a lower speed threshold and an upper speed threshold both to the relevant road type and to the relevant road category of the road traveled by the vehicle, and in one fourth step, at least the lower speed threshold and the upper speed threshold, possibly modified, are used to determine the traffic condition.
- the costs are, in particular, costs for corresponding SMS messages (short message service) or costs for other transmission.
- the movement or the speed of the vehicle can also be divided into more than three speed classes or speed ranges. This can be particularly useful if not only a distinction is to be made as to whether a vehicle is stuck in a traffic jam or not, but also a determination should be made as to where, on average, the traffic jam is traveling.
- This method in particular for providing traffic condition data for the traffic situation detection in the entire road network, preferably for traffic jam detection, makes it possible to largely reliably recognize a traffic condition and to transmit the traffic condition as given only when it actually occurs, i.e. the method according to the invention enables event-oriented or status-oriented generation of traffic status data. Traffic status data is only transmitted if the recognized traffic status, e.g. a traffic jam causing this.
- the method according to the invention only allows inexpensive and even timely data collection by the vehicle for the entire road network, in particular on motorways, country roads and on streets in city traffic.
- the road type and the road category of the road traveled by the vehicle from the known standard sensor interface abbreviated “SSI”, using the location position of the vehicle provided in the vehicle and one of the Street type assigned to the street position and a street category assigned to the street position is provided.
- the road types highway or "highway”, developed federal road or “fast road”, undeveloped federal road or “regional road”, main street or “main road”, main street leads through a location or "local road”, connecting road or connecting road, slow road or “slow road”, side road or “minor road”, and dirt road or "service road” when carrying out the method according to the invention ,
- a normal speed is assigned to the determined road type, depending on the determined road category, and a lower speed threshold with approx. 35% of normal speed and an upper speed threshold with approx. 45% of normal speed is set.
- another embodiment of the invention provides that the determined road type, depending on the determined road category, is determined from a table stored in the vehicle with empirical values, speed values for a lower and upper speed threshold.
- the current values for the lower and upper speed threshold are fed into the vehicle from outside the vehicle, in particular from a traffic data center, and temporarily the current values are used instead of the original values.
- the transmission of the current values for the lower and upper speed threshold for a section of the route currently or soon to be traveled is preferably carried out into the vehicle via SMS, TMC, DAB or the like.
- the original data can be taken from a storage device in the vehicle, in particular a DVD, and only the currently deviating values are transferred to the vehicle.
- the normal speed for the specific street can also be indicated on the digital map.
- the lower speed threshold S1 and the upper speed threshold S2 are then based in particular on the normal speed, preferably as indicated above.
- the method for data acquisition according to the invention also enables an advantageous system for transmitting traffic status data from a first vehicle to a second vehicle, in particular via an ad hoc network, or from a traffic data center to one or more motor vehicles, optionally modified, in particular via broadcast. It also enables an advantageous device and a computer program product for use in a motor vehicle for the generation and transmission of traffic condition data.
- FIG. 1 the flow diagram of a software module for determining the scope of the determined traffic condition
- FIG. 2 the flow diagram of a software module for determining the expected speed level
- FIG. 3 the flowchart of a software module for determining the boundary conditions of weather and road guidance
- Figure 4 the flow diagram of a software module for the detection of intersection areas
- Figure 5 the flow diagram of a software module for detecting the traffic condition.
- Vehicle-generated data are made available to a computing algorithm by the vehicle data buses via a known standard sensor interface, preferably every second.
- a computing algorithm preferably every second.
- Navigation system Street category from: Navigation system Distance to the next intersection from: Navigation system Distance to the end of the traffic segment from: navigation system average normal speed off: navigation system urban / extra-urban (road type) off: navigation system speed off: vehicle bus steering angle off: vehicle bus gear off: vehicle bus hazard warning system, turn signal off: vehicle Bus ABS off: Vehicle bus DSC / ASR off: Vehicle bus crash sensor off: Vehicle bus airbag off: Vehicle bus Door status off: Vehicle bus Next POI type off: Navigation system Distance POI off: Navigation system temperature off: Vehicle bus light off: Vehicle bus fog light off: Vehicle bus wiper setting off: Vehicle bus wiping frequency off: Vehicle bus handbrake off: Vehicle bus
- POI stands for "Point of Interest", such as restaurants, petrol stations, hospitals etc.
- the data are used to coordinate the street coordinates of the inner-city / extra-urban (street type) - gear selection door status next POI type distance next POI steering angle Handbrake airbag crash sensor
- the status of the vehicle doors and the current gear selection give e.g. B. Information about whether people get in or out (door opens).
- Parking processes can be identified by evaluating the steering angle turns in relation to the speed.
- Data from the digital map provide information as to whether the vehicle is actually driving on a public road or whether it is driving.
- B. is located on a large park, a rest area or gas station.
- the flowchart of the software module 100 for determining the scope of the determined traffic condition uses the following comparisons, which are carried out in order to find indications that the vehicle is not moving in the usual manner in road traffic.
- comparison 101 it is checked whether the door is open, in comparison 102 it is checked whether a POI (Point of Interest) is nearby, in comparison 103 it is checked whether there is a high level of steering activity, in comparison 104 it is checked Whether the vehicle is in reverse gear or idling, in comparison 105, the data provided by the navigation system (not shown) is used to check whether the vehicle is off the road, in comparison 106 it is checked whether the handbrake is applied, in the comparison 107 it is checked whether the airbag has been deployed.
- POI Point of Interest
- a counter 108 is increased by “1”. If, for example, the door is opened, comparison 101 gives a first "yes” and the counter is set to “1". In the next second there is a new comparison 101 and the counter is set to "2" when the door is open, etc. If the door is closed, the result is "No” and in the next second comparison 102 takes place. If the result is "yes”, the counter is increased by "1" to "3". If there is no positive comparison during a comparison of comparisons 101 to 107, the counter reading of the counter is reset to "0". Each positive comparison thus increases the counter reading of counter 108, but only until there is a run through the comparisons 101 to 107, where the result of the comparisons was always “no". Possibly. the counter 101 is set to "0" as indicated in 109.
- the value t1 in a comparison 110 is set to "60". If the counter reading of the counter 108 does not reach the counter reading "60", the result of the comparison 110 is "No" and the detection of whether there is a jam is suspended as indicated by "Detection PAUSE” 111. If the result of the comparison 110 is "yes”, i.e. if one of the states of the comparisons 101 to 107 is present for more than 60 seconds, the detection is reset as to whether there is a jam or not. This is indicated by “detection RESET” 112. How the “detection RESET” is carried out or what it does is explained in more detail later in connection with FIG. 5. If the result of the comparisons 101 to 107 has always been “no”, this is considered a situation in which there is no exceptional state and the traffic jam detection is carried out - as described in more detail below. This is indicated by “detection GO" 113.
- Comparisons 101 to 107 can also be carried out in a different order. For example, query 106 as to whether the handbrake is applied could be carried out before query 101 as to whether a door is open.
- FIG. 2 shows the flow diagram of the software module 200 for determining the speed level to be expected.
- the well-known standard sensor interface (SSI) 201 provides the road type 202 and the road category 203 for all roads and the normal speed for some roads using a digital map (not shown) which contains this information.
- the digital map usually a DVD of the navigation system, shows which street type 202 and which street category 203 the specific street belongs to.
- the expected speed level in the sense of a normal speed is assigned for the streets for which the normal speed is not available using a table 204 with entries for the different “street types” and for the different “street categories”.
- Table 204 has a lower speed threshold S1 and an upper speed threshold S2 for the relevant road type and the relevant road category. If the vehicle is on a main road, the normal speed is z. B. according to the permissible maximum speed, in particular about 100 km / h.
- the lower speed threshold S1 is set at 35 km / h in the table and the upper speed threshold S2 is set at 45 km / h in the table.
- This is an empirical value, which is based on the assumption that a traffic disruption is likely to occur below 35 km / h, a traffic disruption could occur at a speed of 35 to 45 km / h and at a speed of more than 45 km / h there is probably no traffic disruption or no traffic jam. The same is entered in the table for the other street categories depending on the street type.
- the normal speed for the specific street can also be indicated on the digital map.
- the lower speed threshold S1 is set at 35% of the normal speed and the upper speed threshold S2 at 45% of the normal speed. The lower speed threshold S1 and the upper speed threshold S2 are thus based on the normal speed.
- the speed thresholds S1 and S2 are transferred to a software module for determining the boundary conditions weather and road routing according to FIG. 3, which adapts the speed thresholds to the boundary conditions if necessary.
- these values are empirical values that can preferably be selected in order to optimize the reliability of the traffic jam detection.
- the speed thresholds S1 and S2 can also be determined from the table if the normal speed is recorded on the digital map.
- the upper and lower speed thresholds can be transmitted into the vehicle from a traffic data center depending on the current vehicle position and / or the current time and / or the current direction of travel and can be used temporarily instead of the original table values.
- the traffic data center can only transmit deviations from the values stored in the vehicle (table, navigation map data).
- Current temporary conditions such as daily construction sites, current displays of variable message signs or night speed restrictions (noise protection) are advantageously taken into account without having to reduce the sensitivity of the traffic jam detection.
- FIG. 3 shows the flowchart of the software module 300 for determining the boundary conditions weather and road guidance.
- the threshold values S1 and S2 are adapted accordingly for the traffic condition detection described in FIG. 5.
- N1 is a value that expresses the degree of influence on the normal speed of the vehicle without adverse boundary conditions and thus represents a weight for the “wiper wiping” condition.
- step 311 Set to "0".
- N3 is a value which expresses how much influence is exerted on those without adverse boundary conditions normal speed of the vehicle is and therefore represents a weight for the condition "fog or fog lamp on”.
- step 316 it is checked whether the low beam is switched on.
- a daylight sensor could be used to check whether it is dark and the low beam should be switched on.
- N5 is a value that expresses how great the influence on the normal speed of the vehicle without adverse boundary conditions is and therefore represents a weight for the condition “darkness or low beam on”.
- N6 is a value that expresses the degree of influence on the normal speed of the vehicle without adverse boundary conditions and thus represents a weight for the condition “temperature lower than 4 degrees Celsius and also windshield wipers switched on”.
- step 320 If the result of the comparison is “No” or if N6 was added in step 319, the process continues with step 320.
- step 320 it is checked whether the value M6 is greater than a predetermined value Mb.
- Mb is an empirical value or is determined, for example, by test drives and indicates from which value at a lower speed due to the mentioned boundary conditions compared to. the normal speed is calculated. If the result of the comparison 320 is “yes”, the lower speed threshold S1 and the upper speed threshold S2 from the software module 200 for determining the expected speed level are each reduced by multiplication by a value P1 that is less than 1 Practice has shown that a value P1 of approx. 0.9 is suitable, ie that S1 and S2 should be reduced to approx. 90% of their normal value under the mentioned boundary conditions.
- the chain shown in FIG. 3 is run through again (preferably) about every second, unless it is determined that the vehicle is outside the scope of the traffic jam detection system according to the invention (see FIG. 1).
- FIG. 4 shows the flowchart of a software module 400 for the detection of intersection areas. Delays in the flow of traffic that occur as a result of intersections, both light-signal-controlled and non-light-signal-controlled, are recognized as such and are filtered out during normal deceleration and subsequent crossing. This practically emulates an intersection-free driving profile, thus enabling status detection even in intersection areas.
- the SSI data "Distance to the next intersection” (from the navigation system with digital map) and "Speed" are used for this. A traffic jam in front of an intersection area is identified in the actual traffic condition detection, FIG. 5.
- step 404 If the result of the comparison 401 is “No”, that is to say the vehicle is not driving in the area of an intersection, the actual speed v of the vehicle is passed on as speed v2 in step 404 to the traffic state detection system in FIG. 5.
- the chain shown in FIG. 4 is run through again (preferably) about every second, unless it is determined that the vehicle is outside the scope of the traffic jam detection system according to the invention (see FIG. 1).
- Figure 5 finally shows the flowchart of a software module 500 for recognizing the traffic condition by means of a threshold value method, i.e. to determine whether there is a traffic jam or whether there is free travel.
- the software module 500 according to the invention allows the determination of a position specification for the traffic jam entry and a position specification for the traffic jam exit.
- the basic data for the threshold value method executed by the software module 500 are the data determined from the above four software modules and the current speed data of the vehicle. If the software module 100 (areas of application) determines that the vehicle is not participating in the flowing traffic, the traffic condition detection according to FIG. 5 is suppressed. After determined participation in traffic, the module data are used to modify the speed values v2 and to determine the current threshold values S1 and S2. The speed data are changed via the determined boundary conditions of weather, road condition and road layout (intersections, switchbacks). The modified speed data are used for further calculations.
- the thresholds are above the Target speed (software module 200) is determined. They divide the entire speed range into three parts; Velocity v less than S1, v between S1 and S2 and v greater than S2.
- the modified speed data are preferably assigned to one of the three areas every second.
- the currently prevailing traffic conditions are then determined via the frequencies of the modified speed data in the individual areas.
- Traffic light and intersection areas have already been taken into account by modifying the speed data. Traffic jams in traffic light or intersection areas are recognized just as in intersection-free areas.
- the speed v2 (possibly an intersection-adjusted speed of FIG. 4) is lower than the lower speed threshold S1 (possibly modified by the boundary conditions weather, road condition and road guidance). If the result of the comparison 501 is “yes”, which is considered a reference point for a traffic jam, in step 502, starting from the counter reading “0”, a first counter counts up by the value W1 (counter reading 1 + W1). The first counter therefore takes into account a low speed v2 ⁇ S1 of the vehicle. Since the flowchart (preferably) is run through every second, the comparison is counted up every second if the comparison result remains the same.
- the status of the counter in step 502 is compared in step 503 with a value S5 (counter status 1> S5).
- step 504 If the result of the comparison 501 is “No”, ie if v2 is less than the lower speed threshold S1, it is checked in step 504 whether the (possibly modified) speed of the vehicle v2 is less than the upper speed threshold S2. Is the result of the comparison 504 "Yes", which is a reference point for free travel or no traffic jam, is incremented in step 505 from the counter reading "0" by a second counter by the value W2 (counter reading 2 + W2). The second counter therefore takes a high one into account Speed v2> S2 of the vehicle Since the flowchart (preferably) is run through every second, the comparison result remains the same counted up every second.
- the counter reading of the second counter is increased by the value "1" every second in step 505, ie W2 is preferably "1". Of course, another value, such as "0.5”, could also be added.
- the status of the second counter in step 505 is compared with the value S8 in step 506. If the result is "yes”, the counter status of the first counter in step 508 is reset to "0". If the result is "no", the process continues with step 51.
- the first counter is counted up in step 502 in the event of a traffic jam.
- the counter reading of the first counter may exceed the value S5 and the result of the comparison 503 is "Yes”.
- the second counter is incremented in step 505 when the vehicle is moving freely (counter reading 2 + W2).
- the counter reading of the second counter may exceed the value S8 and the result of the comparison 506 is "Yes”.
- step 513 it is checked whether the counter reading of the second counter (counter reading 2) has been reset to "0" for the first time in step 507. If the result is "yes”, in step 514 the location and the time at which the counter reading of the Counter 1 in step 503 was greater than the value S5, stored (potential traffic jam entry). Potential because in step 509 it still has to be shown whether there is really a traffic jam.
- step 515 it is checked whether the counter reading of the first counter (counter reading 1) has been reset to "0" for the first time in step 508. If the result is "yes”, in step 516 the location and the time at which the counter reading of the counter is used for the first time 2 was greater than the value S8 in step 506 (potential traffic jam exit). Potential because in step 511 it still has to be shown whether there is really no traffic jam.
- step 517 it is checked in step 517 whether the absolute amount of the difference between counter reading 1 and counter reading 2 is greater than a value S9 (counter reading 1 - counter reading 2 1> S9). If the result of the comparison is "yes”, step 509 is carried out. If the result of the comparison is "no”, the Step 509 has not been carried out and the process chain shown in FIG. 5 begins again with step 501, as in the preferably second run.
- step 504 If the speed v2 lies between S1 and S2, the result of the comparison in step 504 is "No". This situation is considered an undefined state, i.e. it is not clear whether there is a traffic jam or no traffic jam or free travel.
- step 504 ' the counter reading of the first counter is then increased by the value W3 and the counter reading of the second counter is also increased by the value W3, if necessary every second, increased if the passage through the chain shown in Figure 5 takes place every second, preferably W1 and W2 have the same value, with W3 preferably having half the value of W1 or W2. W2 "1" and the value of W3 "0.5". It goes without saying that a different weighting can also be used if this leads to more reliable jam detection.
- the counter reading of the first counter (low speed) is compared with the value S6 every second in step 509 (counter reading 1> S6). If the counter reading of the first counter is greater than S6, if the result of the comparison is “yes”, a first data record is generated in step 510 which describes the “traffic jam” state. In step 518 it is checked whether there is a change in state, i.e. whether the "traffic jam" state was preceded by the "free” state. Each time the vehicle is started up again, the state "free” is set as the initial state.
- the first data record and the location and time of the (previously only potential) traffic jam entry are made in step 519 for the purpose of data collection to an institution reconstructing and representing the traffic situation, in particular a traffic data center, preferably a regional traffic data center, preferably by SMS.
- step 511 checks whether the count of the second counter is greater than a value S7. If the result of the comparison is “yes” ", a second data record is generated in step 512 which shows the state "Free” describes. In step 520 it is checked whether there is a change in state, ie whether the state "free” was preceded by the state "traffic jam”. If the result of the comparison is "yes”, the second data record and the location and time of the (Previously only potential) traffic jam exit in step 521 for the purpose of data collection to an institution reconstructing and representing the traffic situation, in particular a traffic data center, preferably a regional traffic data center, preferably by SMS.
- a traffic data center preferably a regional traffic data center, preferably by SMS.
- step 501 If the result of the comparisons in steps 518 or 520 is “no”, no data transmission takes place. Rather, the method described in FIG. 5 begins again with step 501.
- step 509 If the counter reading of the first counter (traffic jam entry) is less than or equal to S6 in step 509, the result of the comparison 509 is "no". Then in the next step 511 it is checked whether the counter reading of the second counter (traffic jam exit or free travel) is greater or is S7. If the counter reading of the second counter is greater than or equal to S7, the result of the comparison is "yes” and the status "free” is again preferably sent via SMS to the institution reconstructing and representing the traffic situation in step 512 for the purpose of surveying the traffic situation ,
- step 513 In order to determine the location of the traffic jam entrance and to be able to transmit it to the institution reconstructing and representing the traffic situation (not shown), after the second counter has been reset in step 507, a check is carried out in step 513 as to whether it is the first pass or whether this comparison 513 is made for the first time.
- the result of the comparison 513 is "yes” and the position of the vehicle determined at this point in time on the basis of the data from the navigation system is stored as "traffic jam entry" in step 514
- the status of "traffic jam” in step 510 is preferably also transmitted to the position of the vehicle stored in step 514, ie the "traffic jam entry" to the vehicle Reconstructing and performing institution to transmit traffic situation preferably by SMS.
- step 515 In order to also determine the location of the traffic jam exit and to be able to transmit it to the institution reconstructing and representing the traffic situation (not shown), after the reset of the first counter in step 508 it is checked in step 515 whether this is the first pass or whether this comparison 515 is carried out for the first time. If the first counter was reset to "0" for the first time in step 508, the result of the comparison 515 is "yes” and the position of the vehicle determined at this point in time on the basis of the data from the navigation system is stored as "traffic jam exit" in step 516
- the transmission of the “free” state in step 512 also preferably means the position of the vehicle stored in step 516, ie transmit the "traffic jam exit" to the institution reconstructing and presenting the traffic situation, preferably by SMS.
- step 509 If the result of the comparison 513 or 515 is “No” or if the “traffic jam entry in step 514 or the traffic jam exit in step 516 has been stored, the comparison in step 509 continues.
- a value of approximately 60 seconds is preferably selected for S5 and a value of approximately 180 seconds for S6 and S7. It goes without saying that values other than these practical values can also be selected if they enable a more reliable detection of traffic jams.
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Abstract
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04803843A EP1695315B1 (de) | 2003-12-19 | 2004-12-14 | Ermittlung des zu erwartenden geschwindigkeitsniveaus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2003/014643 WO2005064564A1 (de) | 2003-12-19 | 2003-12-19 | Ermittlung des zu erwartenden geschwindigkeitsniveaus |
| PCT/EP2004/014218 WO2005064566A1 (de) | 2003-12-19 | 2004-12-14 | Ermittlung des zu erwartenden geschwindigkeitsniveaus |
| EP04803843A EP1695315B1 (de) | 2003-12-19 | 2004-12-14 | Ermittlung des zu erwartenden geschwindigkeitsniveaus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1695315A1 true EP1695315A1 (de) | 2006-08-30 |
| EP1695315B1 EP1695315B1 (de) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04803843A Expired - Lifetime EP1695315B1 (de) | 2003-12-19 | 2004-12-14 | Ermittlung des zu erwartenden geschwindigkeitsniveaus |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1695315B1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158333A (zh) * | 2022-07-04 | 2022-10-11 | 合肥工业大学 | 基于智能融合识别技术的车速自适应调节方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017216844B4 (de) * | 2017-09-22 | 2022-09-08 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Verfahren zur Identifizierung von Langsamfahrstellen auf einer Strecke |
-
2004
- 2004-12-14 EP EP04803843A patent/EP1695315B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005064566A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158333A (zh) * | 2022-07-04 | 2022-10-11 | 合肥工业大学 | 基于智能融合识别技术的车速自适应调节方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1695315B1 (de) | 2010-09-22 |
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