EP4021776A1 - Dispositif et procédé pour surveiller un processus de sablage pour une installation de sablage pour un véhicule sur rails, dispositif de sablage, véhicule sur rails et ensemble voie - Google Patents

Dispositif et procédé pour surveiller un processus de sablage pour une installation de sablage pour un véhicule sur rails, dispositif de sablage, véhicule sur rails et ensemble voie

Info

Publication number
EP4021776A1
EP4021776A1 EP20765229.8A EP20765229A EP4021776A1 EP 4021776 A1 EP4021776 A1 EP 4021776A1 EP 20765229 A EP20765229 A EP 20765229A EP 4021776 A1 EP4021776 A1 EP 4021776A1
Authority
EP
European Patent Office
Prior art keywords
grit
signal
sanding
grinding
rail
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
Application number
EP20765229.8A
Other languages
German (de)
English (en)
Other versions
EP4021776B1 (fr
Inventor
Georg KRISMANIC
Kurt Haselsteiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse GmbH
Original Assignee
Knorr Bremse GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Knorr Bremse GmbH filed Critical Knorr Bremse GmbH
Publication of EP4021776A1 publication Critical patent/EP4021776A1/fr
Application granted granted Critical
Publication of EP4021776B1 publication Critical patent/EP4021776B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08—Preventing wheel slippage
    • B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
    • B61C15/107—Preventing wheel slippage by depositing sand or like friction increasing materials with electrically or electromagnetically controlled sanding equipment

Definitions

  • the present approach relates to a device and a method for monitoring a sanding process for a sanding system for a rail vehicle and to a sanding device, a rail vehicle and a track device.
  • the object of the present approach is to create an improved sanding device, an improved rail vehicle, an improved track device, and an improved method for monitoring a sanding process.
  • a device for monitoring a sanding process for a sanding system for a rail vehicle has an evaluation device which is designed to read in a grinding signal which represents a grinding process sensed by a sensor device, which involves grinding at least one grit grain in a wheel rail gap between a rail and a Represents the wheel of the rail vehicle.
  • the device is further designed to use the grinding signal to determine a scattering material quantity signal which indicates a scattering material quantity of ground gritting material grains during the sanding process.
  • grit can be applied by the sanding system of the rail vehicle. Litter can be based on naturally occurring (degraded) media as well as on artificially produced substances.
  • a typical grit is sand, which can also be used here as a synonym for grit.
  • the grinding signal can indicate a physical variable sensed by the sensor device during the sanding process, for example a sensed acceleration, a sensed sound, such as a noise, or a vibration.
  • a characteristic of the grinding signal can depend on whether and, if applicable, how much of the spreading material is being ground. Thus, by means of a suitable evaluation of the characteristics of the grinding signal, conclusions can be drawn as to the amount of grit of grit during the sanding process.
  • the grinding signal can be evaluated in the time domain as well as in the frequency domain.
  • a device for monitoring a sanding process advantageously makes it possible to identify the amount of grit in the ground grit grains, whereby a function or malfunction of the sanding system can be checked.
  • the amount of grit signal can provide information on whether, as expected, a lot of grit landed on the rail during the sanding process, or an undesirably large amount of grit landed next to the rail.
  • a sand pipe or another component of the sanding system can then be checked or readjusted accordingly in order to achieve an ideal sanding process in the future enable to ensure faster and additionally or alternatively stronger braking of the rail vehicle.
  • the device can also have the sensor device which is designed to sense the grinding process and to provide the grinding signal representing the sensed grinding process. If the evaluation device and the sensor device are arranged separately from one another, a wireless or wired communication interface can be provided between the evaluation device and the sensor device.
  • the evaluation device and the sensor device can be arranged jointly on the rail vehicle or jointly on a track device or divided between the rail vehicle and the track device.
  • the sensor device is designed to detect an acceleration of an element of the rail vehicle or a rail element of a track device and additionally or alternatively a sound wave and to provide an acceleration signal representing the acceleration.
  • the element of the rail vehicle can be a wheel or a wheel axle of the rail vehicle.
  • the sound wave can be a structure-borne sound wave or an air-borne sound wave.
  • the sensor device can be designed to detect an acoustic signal.
  • An acoustic evaluation is advantageous.
  • the sensor device can for example comprise an acceleration sensor and additionally or alternatively at least one membrane or a microphone.
  • the microphone can be arranged on the sand hose, for example on the sand pipe heater.
  • the acceleration signal and in particular the acceleration signal provided during the sanding process can thus be used by the device as the grinding signal.
  • Such a sensor device creates a simple method of sensing the grinding process.
  • the device can furthermore have a transmitting device which is designed to transmit the scattered material quantity signal to a vehicle controller of the rail vehicle. So can it Scatter signal from an existing vehicle control of the rail vehicle can be processed further.
  • the evaluation device can be designed to evaluate the amplitude and additionally or alternatively the frequency of the grinding signal in order to determine the amount of scattered material signal.
  • the amplitude of the grinding signal can advantageously provide information as to whether there is any grit on the rail when the rail vehicle passes over it.
  • the frequency can provide an overview of when and how much grit is ground up during the sanding process.
  • the evaluation device can be designed to compare the grinding signal with a defined amplitude limit value in order to identify the grinding process. If the amplitude of the grinding signal exceeds the amplitude limit value, it can be concluded that scattering material is present. Additionally or alternatively, the evaluation device can be designed to determine and evaluate a frequency spectrum of the grinding signal in order to determine the ground amount of grit. For example, from a distribution or an average value of the frequencies comprised by the grinding signal, conclusions can be drawn as to the amount of the gritting material ground per unit of time. This creates a very quick way to monitor the sanding process.
  • the evaluation device can be designed to evaluate the frequency spectrum in order to determine the ground amount of grit within a specific time segment or the entire sanding process. In this way, the sanding process can be monitored periodically or continuously, for example.
  • the device has a comparison device which is designed to output a warning signal using the scattering material amount signal and a target scattering material amount signal which represents an expected scattering material amount of ground gritting material grains when the The amount of grit of ground grit deviates from the desired amount of grit of ground grit.
  • the comparison device can be designed to output a confirmation signal when the amount of grit of ground grit corresponds to the desired amount of grit of grit.
  • the comparison device can be implemented in the evaluation device or the vehicle controller.
  • the target amount of scattering material signal can be a signal provided or read in by a sand request device of the sanding system.
  • the comparison device can be designed to compare the amount of grit of ground grit with the expected amount of grit of ground grit and to output either the warning signal or the confirmation signal depending on a comparison result.
  • the confirmation signal can be understood as an all-clear signal, which indicates the correct amount of grit of ground grit. This creates a differentiation possibility for recognizing whether the amount of grit of ground grit is correct or not.
  • the warning signal can be designed to display information to a driver of the rail vehicle about an incorrectly ground amount of grit. Additionally or alternatively, the warning signal can be designed to indicate a difference between the amount of grit output and the ground grit grains and additionally or alternatively to change an alignment of a sand pipe of the sanding system. For example, the warning signal can be suitable for activating an optical or acoustic display device.
  • the sensor device and the evaluation device can be shaped as one component or else be shaped as at least two separate components.
  • the sensor device and the evaluation device can be accommodated in a common housing, for example, or the evaluation device can be incorporated into the sensor device be arranged integrated.
  • the sensor device and the evaluation device can be accommodated in separate housings, for example.
  • the complete device can be arranged, for example, near the wheel rail gap, for example on the wheel or axle bearing or on a wheel bearing, for example in the case of a single wheel chassis, the rail vehicle or on a rail element of a track device, in order to ideally sense and evaluate the grinding of grit to be able to.
  • at least the sensor device can be arranged near the wheel rail gap and the evaluation by the evaluation device can take place, for example, in another area of the rail vehicle that is protected from environmental influences, for example.
  • a sanding device for a rail vehicle has a sanding system and a device which is formed in one of the variants described above.
  • Such a sanding device can advantageously enable sanding of the rail vehicle and, thanks to the device, monitor its own sanding function.
  • a rail vehicle with such a sanding device is also presented.
  • This rail vehicle can advantageously be sanded effectively, the sanding process being optimally monitored thanks to the device.
  • At least the sensor device of the device can be arranged on or in an axle bearing, a wheel axle, a wheel, a bogie and additionally or alternatively a substructure of the rail vehicle.
  • the entire device can also be arranged on or in the axle bearing, the wheel axle, the wheel, the bogie or the substructure of the rail vehicle. The positions mentioned are close to the wheel rail gap and allow ideal sensing of the grinding of grit grains.
  • a track device with a rail element has one of the devices described above, at least the sensor device being arranged on or in the rail element.
  • the entire device can also be arranged on or in the rail element.
  • the rail element can be a component of the Be a rail or a rail sleeper.
  • Such a track device is suitable, for example, for use in connection with a test track system for testing the sanding process outside of the normal ferry operation of the rail vehicle.
  • the device can be designed to output a sanding signal to the sanding system of the rail vehicle in response to an activation signal, which represents the approaching of the rail vehicle to the sensor device, in order to start the sanding process.
  • the activation signal can be output or provided by a detection device which is arranged, for example, on or in the rail element.
  • the detection device can also be part of the device.
  • Such a track device can advantageously be used to test the sanding process of the sanding system before the sanding system is to be used in a normal ferry operation for the rail vehicle.
  • a method for monitoring a sanding process for a sanding system for a rail vehicle has a reading-in step and a determining step.
  • a grinding signal is read in, which represents a grinding process sensed by a sensor device, which represents grinding of at least one grain of grit in a wheel rail gap between a rail and a wheel of the rail vehicle.
  • a scattering material quantity signal is determined which indicates a scattering agent quantity of ground gritting material grains during the sanding process.
  • This method can be implemented, for example, in software or flardware or in a mixed form of software and flardware, for example in the device described above.
  • FIG. 1 shows a schematic side view of a rail vehicle with a sanding device with a sanding system and a device for Monitoring a sanding process of the sanding system according to an exemplary embodiment
  • FIG. 2 shows a schematic side view of a rail vehicle and a track device with a rail element and a device according to an embodiment
  • FIG. 3 shows a schematic illustration of an acceleration signal of a sensor device for a braking process without a sanding process according to an exemplary embodiment
  • FIG. 4 shows a schematic representation of a grinding signal of a device for a braking process with a sanding process according to an exemplary embodiment
  • FIG. 5 shows a schematic representation of a frequency spectrum for a braking process without a sanding process according to an exemplary embodiment
  • FIG. 6 shows a schematic representation of a frequency spectrum determined by a device for a braking process with a sanding process according to an exemplary embodiment
  • FIG. 7 shows a flow chart of a method for monitoring a sanding process for a sanding system for a rail vehicle according to an exemplary embodiment.
  • FIG. 1 shows a schematic side view of a rail vehicle 100 with a sanding device 105 with a sanding system 110 and a device 115 for monitoring a sanding process of the sanding system 110 according to an exemplary embodiment.
  • the sanding device 105 is received on the rail vehicle 100 merely by way of example.
  • the sanding device 105 has the sanding system 110 for sanding the rail vehicle 100 and the device 115, which is designed to monitor the sanding process of the sanding system 110.
  • the sanding system 110 has a sandpit 120 for storing grit, a sand metering device 125 for dosing the grit and a sand pipe 130 for feeding the grit into a wheel rail gap 135 between a wheel 140 of the rail vehicle 100 and a rail 145 on which the rail vehicle 100 is arranged.
  • the rail vehicle 100 also has at least one axle bearing 150, each with two mounted wheels 140 and / or at least one bogie 155, a vehicle control 160 and / or a sanding control 165.
  • the sanding control 165 is connected to the vehicle control 160 for signaling purposes and is designed to control the sand dosing device 125 in order to effect the dosing of the spreading agent.
  • the vehicle control 160, sanding control 165, the sandpit 120, sand metering device 125 and / or partly also the sand pipe 130 are accommodated in a vehicle body 167 of the rail vehicle 100 according to this exemplary embodiment.
  • the bogie 155, the axle bearings 150, wheels 140 and / or partially also the sand pipe 130 are arranged outside the vehicle body 167 according to this exemplary embodiment.
  • An arrow 168 shows a direction of travel of the rail vehicle 100.
  • the device 115 has an evaluation device 170 which is designed to read in a grinding signal 175 which represents a grinding process sensed by a sensor device 180, which represents grinding of at least one grain of grit, for example a grain of sand, in the wheel rail gap 135.
  • the evaluation device 170 is also designed to determine, using the grinding signal 175, a scattering material quantity signal 185 which indicates a scattering agent quantity of ground gritting material grains during the Shows the sanding process.
  • the evaluation device 170 is designed to evaluate a characteristic of the grinding signal 175 using a suitable evaluation rule in order to determine the scattering material quantity signal 185.
  • the evaluation device 170 is designed to evaluate a time curve and additionally or a frequency spectrum of the grinding signal 175, for example by comparing it with reference curves, reference spectra or reference threshold values characteristic of a grinding process.
  • the evaluation device 170 is accommodated in the vehicle body 167.
  • the device 115 comprises the sensor device 180, which is designed to sense the grinding process and to provide the grinding signal 175 representing the sensed grinding process.
  • the sensor device 180 is designed to detect an acceleration of an element of the rail vehicle 100 or a rail element of a track device and / or a sound wave and to provide an acceleration signal representing the acceleration, as shown in FIG. 3, for example.
  • the sensor device 180 according to this exemplary embodiment has an acceleration sensor and / or at least one membrane or a microphone.
  • the grinding signal 175 thus indicates an acceleration sensed by the sensor device 180 during the sanding process, for example a sensed sound such as a noise or a vibration.
  • the acceleration signal can be used as the grinding signal 175 during the sanding process, as is shown in FIG. 4, for example.
  • sensor device 180 is arranged on or in axle bearing 150, or, according to an alternative exemplary embodiment, on or in the wheel axle, wheel 140, bogie 155 or a substructure of rail vehicle 100. If the device 115 does not include the sensor device 180, the device 115 has, for example, an interface in order to receive the grinding signal 175 from another, for example read in sensors, processing devices or storage devices that have already been used.
  • the device 115 also has an optional transmission device which is designed to send the scattered material quantity signal 185 to the vehicle controller 160 of the rail vehicle 100.
  • the evaluation device 170 is designed, by way of example, to evaluate the amplitude and / or frequency of the grinding signal 175 in order to determine the scattered material quantity signal 185.
  • the evaluation device 170 according to this exemplary embodiment is designed to compare the amplitude with a defined amplitude limit value in order to identify the grinding process.
  • the amplitude limit value is suitable for distinguishing a situation in which no litter is ground from a situation in which litter is ground.
  • the amplitude limit value can be determined or learned, for example, by a test drive.
  • the evaluation device 170 is designed to determine and evaluate a frequency spectrum of the milling signal 175 using the milling signal 175 in order to determine the milled amount of grit.
  • the evaluation device 170 is designed to evaluate the frequency spectrum in order to determine the ground amount of grit within a specific time segment or the entire sanding process, as shown in FIG. 6.
  • the evaluation device 170 is designed, for example, to determine and evaluate a maximum or a mean value or a distribution of the frequency spectrum.
  • the evaluation device 170 is designed to use the maximum of the frequency spectrum in order to determine a quantity of grit granules ground per unit of time. The maximum can be used, for example, if a frequency assigned to the maximum lies in a predetermined frequency range 610 that is characteristic of a grinding process.
  • the device 115 also has a comparison device 190 which is designed to use the Spreading material quantity signal 185 and a target spreading material quantity signal, which represents an expected spreading material quantity of ground gritting material grains, to output a warning signal 192 if the spreading material quantity of ground gritting material grains deviates from the desired spreading material quantity of ground gritting material grains and / or to output a confirmation signal to the desired quantity of gritting material being ground corresponds to ground grit grains.
  • the target amount of scattered material signal is read in, for example, via an interface to a control device for controlling the sanding system 110 or for controlling a braking device of the rail vehicle 100.
  • the comparison device 190 is implemented in the evaluation device 170 or, according to an alternative exemplary embodiment, in the vehicle control 160 or sanding control 165. According to this exemplary embodiment, the comparison device 190 is designed to read in the setpoint quantity signal from a sand request device of the sanding system 110. The comparison device 190 is designed to compare the amount of grit of ground grit with the expected amount of grit of grit and to output either the warning signal 192 or the confirmation signal depending on a comparison result.
  • the warning signal 192 is designed to display information to a driver 195 of the rail vehicle 100 about an incorrectly ground amount of grit and / or to indicate a difference between the amount of grit and the ground amount of grit and / or an alignment of the sand pipe 130 of the sanding system 110 to change.
  • a corresponding display for the vehicle driver 195 can take place via a suitable display device.
  • the alignment of the sand pipe 130 can be carried out using a suitable adjusting device.
  • the sensor device 180 and the evaluation device 170 are formed as two separate components, the Sensor device 180 and evaluation device 170 are accommodated in separate housings according to an exemplary embodiment.
  • the sensor device 180 and the evaluation device 170 are formed as one component.
  • the sensor device 180 and the evaluation device 170 are accommodated in a common housing according to an exemplary embodiment, or the evaluation device 170 is arranged integrated into the sensor device 180.
  • the complete device 115 is arranged as one component near the wheel rail gap 135, for example on the wheel 140, axle bearing 150, the wheel axle, the bogie 155 or the substructure of the rail vehicle 100.
  • Sanding systems with sanding systems 110 are used in rail vehicles 100 to bring grit onto the rail 145 in front of the wheel 140 rolling over it or directly into the wheel rail gap 135 in order to increase the coefficient of friction between wheel 140 and rail 145 or to bring it to an originally higher value. This measure can improve the traction and braking of the rail vehicle 100. Sanding systems are often viewed as systems which contribute a considerable factor to reducing the risk of accidents, since the braking distance can be shortened when braking with activated grit application, i.e. a sanding process.
  • the device 115 presented here now advantageously enables the complete functional chain of the sanding system to be checked, from the request for sanding by the vehicle driver 195 or the vehicle control 160 through the sand pipe nozzle to the grit, which is ground in the wheel rail gap 135. It is therefore now possible to offset the sanding device 105 presented here for risk-reducing measures - specifically, for measures to reduce braking distance.
  • the device 115 advantageously enables quantitative detection of the grit entering the wheel rail gap 135.
  • the device 115 now enables a method of quantitatively detecting grit that has entered the wheel rail gap 135 during regular rail operation and / or during the journey.
  • the approach presented here relates to a mobile or stationary monitoring and measuring device for the sanding system of a rail vehicle.
  • a mobile embodiment of the device 115 is described in FIG. 1 and a stationary embodiment in FIG. 2.
  • the device 115 solves the problem of being able to detect the amount of grit ground in the wheel rail gap 135 while driving and also during normal ferry operation.
  • One of the tasks of the approach described here is to find appropriate sensors and evaluation procedures.
  • a fundamental idea is to use at least one grinding signal 175, which can also be referred to as “temporal acceleration signals”, which are recorded at corresponding measuring points, to infer the amount of ground grit.
  • the grinding of the grit produces vibrations which - if in the audible frequency range - can also be perceived acoustically.
  • the grinding of the grit grains in the wheel rail gap 135 results in accelerations which are transmitted to wheel 140 and rail 145 and subsequently to the wheel axle and wheel bearing on the one hand and to the rail sleeper and substructure on the other.
  • Corresponding measuring points for the sensor device 180 are thus, according to one embodiment, on wheel 140, rail 145, wheel axle, axle bearing 150, bogie 155, rail sleeper, substructure and / or on other bodies to which these accelerations are transmitted. Accelerations can also be transmitted to gases, such as sound in the ambient air, and to solid bodies, as structure-borne sound. Corresponding measuring points for the sensor device 180 can thus also, according to an exemplary embodiment, be attached to membranes, in microphones near the wheel rail gap 135. Each grit grit in the wheel rail gap 135 generates an acceleration pulse. Such an acceleration pulse is mapped in the grinding signal 175. Several such pulses, which are generated in chronological order, provide an acceleration spectrum.
  • the time interval between successive grit granules can be determined from the frequencies.
  • evaluation device 170 is used for this purpose. From the amplitude of the grinding signal 175 in the form of an acceleration signal, the evaluation device 170 in accordance with one embodiment already deduces the correct alignment of the sand pipe nozzle of the sand pipe 130 with regard to the accuracy of the scattering agent in the wheel rail gap 135 Grit grit. According to an exemplary embodiment, the evaluation device 170 shoots from this average frequency the number of ground grit grains per unit of time.
  • the evaluation device 170 uses the known average grit grain mass to determine the ground grit amount per unit of time, that is to say the mass of the ground grit per unit of time.
  • the output of approx. 1500 grit grains per second is represented in the spectrum by the maximum at approx. 1500 Hz.
  • the results ascertained by the evaluation device 170 are displayed or provided according to an exemplary embodiment using suitable signals, such as, for example, the scatter amount signal 185.
  • FIG. 1 shows a mobile version of the device 115 with the sensor device 180 on the axle bearing 150.
  • the device 115 is activated as a manually activated sanding check either manually by the vehicle driver 195 or as an automatic sanding check automatically with each sanding process initiated.
  • the vehicle driver 195 or, according to one exemplary embodiment, an anti-skid device request the sanding via the vehicle controller 160 while the rail vehicle 100 is traveling.
  • the sanding control 165 activates the sand dosing device 125, which doses grit from the sandpit 120 and conveys it through the sand pipe 130 and the sand pipe nozzle into the wheel rail gap 135.
  • the scattering agent is ground in the wheel rail gap 135 and generates corresponding accelerations at the axle bearing 150, which according to this exemplary embodiment are picked up by the acceleration sensor of the sensor device 180 and evaluated by the evaluation device 170 with regard to the amplitude signal and frequency spectrum. From the amplitude signal it is determined by means of a previously established limit value whether the grit was ground in the wheel rail gap 135. According to this exemplary embodiment, the evaluation device 170 determines the number of grit granules ground in the wheel rail gap 135 from the frequency spectrum. With the previously determined mean grit grain mass, the evaluation device 170 according to this exemplary embodiment calculates the amount of grit per time.
  • the evaluation device 170 calculates the cumulative amount of scattering material from the signal duration.
  • the determined values are sent to the vehicle controller 160 and / or the comparison device 190, which compares the setpoint value of the sanding request with the actual value and reports the correct or incorrect execution of the sanding request to the vehicle driver 195.
  • FIG. 2 shows a schematic side illustration of a rail vehicle 100 and a track device 200 with a rail element 205 and a device 115 according to an exemplary embodiment.
  • This can be the rail vehicle 100 described with reference to FIG. 1 and the device 115, with the difference that the device 115 according to this exemplary embodiment is formed as a component and / or is arranged on or in the rail element 205.
  • only the sensor device 180 is arranged on or in the rail element 205 and the other components of the device 115 are accommodated in the vehicle body 167 as described in FIG. 1.
  • the rail element 205 is formed as a component of the rail 145 or a rail sleeper.
  • the device 115 is designed to output a sanding signal 215 to the sanding system 110 of the rail vehicle 100 in response to an activation signal 210, which represents the approaching of the rail vehicle 100 to the sensor device 180, in order to start the sanding process.
  • the activation signal 210 is output or provided by a detection device 220 which, according to this exemplary embodiment, is arranged on or in the rail element 205.
  • the detection device 220 which can also be referred to as a “vehicle detector”, is part of the device 115.
  • the transmission device 225 of the device 115 receives the activation signal 210 and, in response to the activation signal 210, sends the transmission signal 215 to a receiver 230 in the vehicle body 167.
  • FIG. 2 shows a stationary exemplary embodiment of the device 115 on the rail 145 with an automatic sanding check according to this exemplary embodiment.
  • the upstream detection device 220 sends a signal by radio to the receiver 230 in the rail vehicle 100 that the rail vehicle 100 is shortly before the device 115, which can also be referred to as a “sanding checking unit”.
  • the vehicle control 160 requests sanding for a defined time while driving at a constant rate.
  • the sanding control 165 activates the sand dosing device 125, which doses grit from the sandpit 120 and conveys it through the sand pipe 130 into the wheel rail gap 135.
  • the grit is ground in the wheel rail gap 135 and generates corresponding accelerations on the rail 145, which are received by the stationary acceleration sensor of the sensor device 180 and from the evaluation unit 170 with regard to the amplitude signal and frequency spectrum can be evaluated. From the amplitude signal, it is determined by means of a previously defined limit value whether the grit was ground up in the wheel rail gap 135. The number of grit granules ground in the wheel rail gap 135 is determined from the frequency spectrum.
  • the determined values are sent to the vehicle control 160 or comparison device, which uses the previously determined mean grit grain mass to calculate the amount of grit per time, compares the target value of the sand request with the actual value and / or the correct or incorrect execution of the sand request to the vehicle driver 195 reports.
  • FIG. 3 shows a schematic illustration of an acceleration signal 300 of a sensor device for a braking process 305 without a sanding process according to an exemplary embodiment.
  • This can be an acceleration signal 300 provided by one of the sensor devices described in FIG. 1 or 2.
  • the acceleration signal 300 is plotted over time t (s).
  • the ordinate shows an acceleration m / s 2.
  • the braking process 305 takes place over an entire distance without any grit and with 10% slip.
  • the acceleration signal 300 represents a time signal.
  • FIG. 4 shows a schematic representation of a grinding signal 175 of a device for a braking process with a sanding process 400 according to an exemplary embodiment.
  • This can be a grinding signal 175 provided by the sensor device described in FIG. 1 or 2, which can be read in by the evaluation device described in FIG. 1 or 2.
  • an acceleration signal 300 of a sensor device is shown, the acceleration signal 300 according to this exemplary embodiment being used as the grinding signal 175 during the period of the sanding process 400.
  • the acceleration signal 300 and thus the grinding signal 175 is plotted over the time t (s).
  • the ordinate shows an acceleration m / s 2.
  • the sanding process 400 takes place according to this exemplary embodiment during the braking process for a section of the entire route described in FIG. 3 with, for example, 4 g / m of sand.
  • the acceleration signal 300 has vibrations, the amplitude of which during the sanding process 400 is many times greater than the amplitudes of vibrations of the acceleration signal 300 outside the sanding process 400. These vibrations are caused by the grinding of grit.
  • a suitable amplitude limit value By comparing the amplitudes of the acceleration signal 300 and thus of the grinding signal 175 with a suitable amplitude limit value, it can be recognized that the scattering agent is being ground. According to this exemplary embodiment, this is the case when the amount of the grinding signal 175 exceeds the amplitude limit value.
  • FIG. 5 shows a schematic illustration of a frequency spectrum 500 for a braking process without a sanding process according to an exemplary embodiment.
  • This can be the frequency spectrum 500 for the acceleration signal described in FIG. 3. It can be seen that the acceleration signal predominantly has frequencies in a low frequency range, for example up to 1000 Hz.
  • FIG. 6 shows a schematic illustration of a frequency spectrum 600 determined, for example, by an evaluation device for a braking process with a sanding process according to an exemplary embodiment.
  • This can be the frequency spectrum 600 for the grinding signal described in FIG. 4.
  • a partial spectrum 605 of a frequency range 610 of the frequency spectrum 600 that is relevant for the sanding process shows a course that is characteristic of the sanding process. From the course of the partial spectrum 605, on the one hand, it can be concluded that grit is being ground and, on the other hand, it can be concluded how much grit is grinded per unit of time.
  • frequency components of the frequency spectrum 600 or the partial spectrum 605 can be compared with frequency threshold values, or a distribution of the frequency components of the frequency spectrum 600 or the partial spectrum 605 can be compared with a reference distribution, or a mean value of the frequency components can be used of the frequency spectrum 600 or of the partial spectrum 605 can be compared with a reference mean value, or a maximum of the frequency spectrum 600 or of the partial spectrum 605 can be compared with a reference maximum.
  • the frequency range 610 comprises, for example, frequencies between 1500 and 2500Flz.
  • the frequency spectrum 600 shown in FIG. 6 has a sequence of frequency components within the frequency range 610.
  • the accumulation of the frequency components within the frequency range 610 is used according to an exemplary embodiment in order to identify the scattering agent being ground up.
  • a distribution of the frequency components within the frequency range 610 is used in order to identify how much scatter material is being ground per unit of time.
  • a comminution of approx. 1500 sand grains per second can be seen in the frequency spectrum 600.
  • the comminution of the approx. 1500 grains of sand per second is represented according to this exemplary embodiment in the sub-spectrum 605 by the maximum 615 at approx. 1500 Hz.
  • FIG. 7 shows a flow chart of a method 700 for monitoring a sanding process for a sanding system for a rail vehicle according to an exemplary embodiment.
  • This method 700 can be controlled or executed by one of the devices described in one of FIGS. 1 or 2.
  • the method 700 has a step 705 of reading in and a step 710 of determining.
  • a grinding signal is read in, which represents a grinding process sensed by a sensor device, which represents grinding of at least one grain of grit in a wheel rail gap between a rail and a wheel of the rail vehicle.
  • a scattering material quantity signal is determined which indicates a scattering material quantity of ground gritting material grains during the sanding process.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

L'invention concerne un dispositif (115) pour surveiller un processus de sablage conçu pour une installation de sablage (110) pour un véhicule sur rails (100), comprenant un dispositif d'évaluation (170) conçu pour lire un signal de pulvérisation (175) représentant un processus de pulvérisation détecté par un dispositif de détection (180), lequel représente une pulvérisation d'au moins un grain de produit d'épandage dans un interstice roue-rail (135) entre un rail (145) et une roue (140) du véhicule sur rails (100). Ce dispositif (115) est en outre conçu pour déterminer, au moyen du signal de pulvérisation (175), un signal de quantité de produit d'épandage (185) qui indique une quantité de grains de produit d'épandage pulvérisés pendant le processus de sablage.
EP20765229.8A 2019-08-29 2020-08-27 Dispositif et procédé pour surveiller un processus de sablage pour une installation de sablage pour un véhicule sur rails, dispositif de sablage, véhicule sur rails et ensemble voie Active EP4021776B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019123233.3A DE102019123233B3 (de) 2019-08-29 2019-08-29 Vorrichtung und Verfahren zum Überwachen eines Sandungsvorgangs für eine Sandungsanlage für ein Schienenfahrzeug, Sandungsvorrichtung, Schienenfahrzeug und Gleisvorrichtung
PCT/EP2020/073965 WO2021037974A1 (fr) 2019-08-29 2020-08-27 Dispositif et procédé pour surveiller un processus de sablage pour une installation de sablage pour un véhicule sur rails, dispositif de sablage, véhicule sur rails et ensemble voie

Publications (2)

Publication Number Publication Date
EP4021776A1 true EP4021776A1 (fr) 2022-07-06
EP4021776B1 EP4021776B1 (fr) 2023-09-27

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EP20765229.8A Active EP4021776B1 (fr) 2019-08-29 2020-08-27 Dispositif et procédé pour surveiller un processus de sablage pour une installation de sablage pour un véhicule sur rails, dispositif de sablage, véhicule sur rails et ensemble voie

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EP (1) EP4021776B1 (fr)
DE (1) DE102019123233B3 (fr)
WO (1) WO2021037974A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023201757A1 (de) * 2023-02-27 2024-08-29 Siemens Mobility GmbH Verfahren zur Überwachung der Funktionsfähigkeit einer Sandungsanlage eines Schienenfahrzeugs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503513B8 (de) * 2004-02-11 2009-01-15 Faiveley Transport Einrichtung zur überwachung des flusses von streugut in fahrzeugen
DE102011113085B4 (de) * 2011-09-09 2014-12-24 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Partikelstreuanlage für ein Schienenfahrzeug
DE102013100250A1 (de) * 2013-01-11 2014-07-31 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Verfahren und Vorrichtung zum Analysieren eines Streumittels und zum Steuern eines Aufbringens eines Streumittels auf eine Schiene für ein Schienenfahrzeug
DE102013016135B4 (de) * 2013-09-27 2019-07-18 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Vorrichtung und Verfahren zum Verbessern eines Haftwerts zwischen einem Rad und einer Schiene für ein Schienenfahrzeug
DE202014104155U1 (de) * 2014-02-04 2014-09-15 Ibeg Systems Gmbh Vorrichtung zur Durchflussüberwachung von körnigen Materialien, Sandstreuvorrichtung für Fahrzeuge sowie Fahrzeug mit einer solchen Sandstreuvorrichtung
DE202014104156U1 (de) * 2014-02-04 2014-09-15 Ibeg Systems Gmbh Vorrichtung zur Überwachung des Flusses von mittels Druckluft beförderten flüssigen oder festen Medien, insbesondere Sand, Sandstreuvorrichtung für Fahrzeuge sowie Fahrzeug mit einer solchen Sandstreuvorrichtung

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WO2021037974A1 (fr) 2021-03-04
DE102019123233B3 (de) 2021-02-25
EP4021776B1 (fr) 2023-09-27

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