Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
  • B60L13/04—Magnetic suspension or levitation for vehicles
  • B60L13/06—Means to sense or control vehicle position or attitude with respect to railway
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2200/00—Type of vehicles
  • B60L2200/26—Rail vehicles

Definitions

• the invention relates to a distance sensor arrangement for a magnet of the support magnet of a magnetic levitation train with a plurality of distance sensors, wherein each distance sensor has a loaded with an operating frequency distance measuring coil and is mounted in an installation space on the magnet.
• a distance sensor arrangement of this type is used in the Transrapid TR08 magnetic levitation train.
• the drive system of this maglev is shown schematically, has a non-illustrated maglev vehicle firmly connected support magnet 1 three magnets 2, 3 and 4, below a partially illustrated long stator 5 at a predetermined distance from about 10 mm in the movement of the maglev vehicle relative to the long stator 5 are held.
• the distance of the support magnet 1 from the long stator 5 is kept constant by a magnetic control unit, not shown in the figure 1, which is acted upon on the input side with output variables of distance sensors.
• each of the Magne ⁇ th 2 to 4 of the supporting magnet 1 each with a pair of distance sensors Sl, S2 and S3, or S4.
• each of these distance sensors Sl to S12 detects the distance between the magnets 2, 3 and 4 on the one hand and the long stator 5 on the other hand according to the inductive measuring principle.
• each of the distance sensors Sl to S12 has, in the region of its surface, a coil which can not be seen in FIG. 1 and which has a certain voltage Frequency, z. B. 1 MHz, is applied.
• the impedance of each coil of the distance sensors Sl to S12 is dependent on the distance of the coil to the long stator 5. By measuring the impedance thus results in a measured variable corresponding to the distance of the respective distance sensor from the long stator 5.
• the impedance measurements are fed to the magnetic control unit, which then ensure by a corresponding excitation of the magnets 2 to 4 that the support magnet 1 maintains a constant distance from the long stator 5 while driving.
• FIG. 1 further shows schwebebahn are disposed relatively close together in the known magnetic ⁇ two distance sensors, so that any influence of the coil of a distance sensor by the field of the coil of the neighboring distance sensor can not be excluded.
• the distance sensors are respectively. their coils operated with voltages of different frequencies, wherein the distance of the frequencies is chosen so large that the frequencies of entste ⁇ ing beats are relatively large and therefore can be easily separated from the Nutz ⁇ signal with a low-pass at the output of the distance sensor.
• the distance sensors Sl, S5 and S 9 are operated at the same operating frequency; The same applies to the distance sensors S2, advertising depending ⁇ but acted upon by one of the operating frequency of the distance sensors Sl, S5 and S9 different operating frequency S 6 and the SIO the. In a corresponding manner, the other distance sensors are operated.
• the geometric distance between two Ab ⁇ sensors of the same frequency thus corresponds exactly to the length of a magnet 2, 3 and 4. This distance is sufficient In order to rule out mutual interference of the distance sensors as far as possible, since the field of the coils of the distance sensors decreases sharply with increasing distance.
• the invention has for its object to design a Abstandssen ⁇ sor arrangement of the type specified in such a way that it reliably delivers correct distance measurements.
• each distance sensor connected to a programmable ⁇ ble block for operating frequency generation, and each distance sensor includes a location information interrogator for querying a installation space individual location information providing device in the installation space and the location information interrogator is connected to the programmable module on the input side.
• a significant advantage of the distance sensor arrangement according to the invention is that by using uniformly constructed sensors and the installation of individually self-operating ⁇ set operating frequencies mutual interference the distance sensors are avoided from the outset, which leads to reliable readings.
• each distance sensor is of identical construction and can be readily placed in the installation space of the magnet, because its respective operating frequency is determined by the location information providing device and the position information device interacting therewith. Interrogator is determined after installation. Mutual interference of the distance sensors can not occur because the operating frequencies are set via the programmable device via the location information Abgrage worn accordingly.
• the programmable component for operating frequency generation can be designed in different ways.
• the programmable component is an FPGA (Field Programmable Gate Array), because such an integrated, programmable logic circuit of the design is small and inexpensive.
• the distance sensor arrangement according to the invention can also be designed differently with regard to the configuration of the location information providing device and the location information interrogation device.
• the location information providing device contains in the installation space of the magnet a plurality of passive components in an installation space-individual spatial arrangement to which in the mounted state of the distance sensor. sinformations interrogator lie opposite. In this case, namely only passive components need to be provided in the magnet, which manage without any power supply.
• the interrogation elements are sense coils and the passive components are metallic or insulating reaction surfaces.
• This embodiment namely offers the advantageous possibility particularly easy to design the location information retrieval means, when an electrical contact member to a pole of an auxiliary voltage source and at least one white ⁇ teres electrical contact element is connected via a resistor to the other pole of the auxiliary voltage source and when the said one electrical Contact element opposite lying contact part is electrically connected to the other electrical contact element opposite contact part is electrically connected and the at least one further electrical con ⁇ tact element is connected to the programmable module.
• an additional location information providing device is associated with a plurality of additional passive components in a matching installation space individual spatial arrangement, which are in the mounted state of the distance sensor additional ⁇ Liche query elements of an additional location information interrogation device, and the location information interrogation devices are connected on the input side via a computing module to the programmable component.
• Interrogation device are opposite, and the Ortsinformati- ons query devices output side are connected to a respective computing block, the computing blocks mit- are connected to each other and each release an enable signal to the otherwise locked, programmable device.
• the distance sensor arrangement is when the spot sinformations providing means in the installation space of the magnet an additional Ortsinformations- providing means with a plurality of additional passive components in matching installation space of individual spatial arrangement is assigned, which in the mounted state of the distance sensor additional query elements of an additional location information interrogator are opposite, and the location information interrogators are connected on the output side to a telegram generator of the distance sensor for transmitting the location information to a magnetic control unit of the support magnet.
• the Abstandsmes ⁇ can be sung dispensed at a distance sensor to a separate analysis because the Spacer measured size and the location information directly to the solenoid control unit ⁇ the supporting magnet are given.
• the distance sensor arrangement in which in each case two pairs of distance sensors on a magnet with control of a respective pair of a magnetic control unit, the location information interrogators are connected to a telegram generator of the respective distance sensor and the solenoid control unit is designed so that a check the plausibility of the übertra ⁇ genes location information in it.
• the installation space is in the inventive proximity sensor assembly in a mounting strip, the ne along the magnet ⁇ ben protruding pole heads of the magnet is attached.
• the fastening strip is provided at both ends with detection elements in a different arrangement or configuration, and if the detection elements are connected to a detection circuit at at least one end of the fastening strip, then the reliability of the distance information output by the distance sensor arrangement according to the invention is even greater elevated .
• the distance sensor is a local sinusoidal sensor. Contains interrogation device for querying an installation space-specific location information providing device in the installation space.
• Query elements of the distance sensor according to the invention can be designed differently, as the claims 16 to 20 can be seen.
• FIG. 2 schematically shows one half of a magnet of a support magnet in a side view
• Figure 3 shows an embodiment of a location information providing device and a location information interrogator and in FIG. 4 shows an arrangement for evaluating the location information obtained by means of two location information provision devices assigned to a distance sensor.
• a magnet 20 which may correspond at ⁇ play the magnet 2 according to Figure 1, with a plurality of main poles 21 and provided with a end pole 22nd
• Each of the main poles 21 has a pole head 23 which transitions downward in a manner not shown into a narrower leg, on which magnet windings 24 are wound.
• a continuous magnetic back 25th is below the legs of the main poles 21 and. the magnet windings 24 .
• fastening strip 26 which may consist of titanium.
• This fastening strip 26 represents the installation space for distance sensors 27 and 28, which in the example correspond in their spatial arrangement to the distance sensors S3 and S4 according to FIG.
• Each of the distance sensors 27 resp. 28 is equipped with a location information retrieval device 30 as shown in FIG.
• the location information interrogator 30 is located in the installation space 31 of the magnet 20 opposite a location information providing device 32.
• the location information providing device 32 is configured individually for each room, in that it is accommodated with electrical contact parts 33 and 34 in an arrangement assigned to the respective installation space; In the illustrated embodiment, only two electrical contact parts 33 and 34 are at a relatively large distance zuein- arranged other and connected via an electrical connection 35 with ⁇ each other.
• the location information retrieval device 30 includes contact parts 36, 37 and 38 in such an arrangement that the contact parts 36 and 38 oppose the contact elements 33 and 34 in the location information providing device 32.
• a pole 39 of a Radiosquel- Ie 40 is connected in the location information interrogator 30.
• the other pole 41 of the operating voltage ⁇ source 40 is connected to ground on the one hand and on the other hand through two resistors 42 and 43 electrically connected to the contact parts 37 and 38th
• Each of the contact parts 37 and 38 is connected to an output 44 and 45 of the location information interrogator 30. These outputs 44 and 45 are connected to a not shown in the figure 3 programmable device for operating frequency generation.
• the non-illustrated programmable device thus generates a voltage with a certain operating frequency, which is applied to a distance measuring coil, also not shown, in the sensor.
• the reliability of the distance measurement can be further increased by the fact that for each distance sensor the location information providing device and the location information
• FIG. 4 shows that a distance sensor, not shown here, has a first location information providing device 50a and, to a certain extent, parallel to this, another location information device.
• Provisioning device 50b are assigned; Both location information providing devices 50a and 50b can each be designed as shown in FIG. 3 in the form of the device 32. Means of a respective Ortsinformati ⁇ ons interrogator 51a respectively. 51b, for example entspre ⁇ accordingly the location information inquiry means 30 according to Figure 3, location information signals OSa and OSb be generated, both of which are supplied in common to each of a Micro-Controller 52a and 52b.
• This Micro-Controller 52a and 52b verglei ⁇ chen its result via channels 53 and 54 with one another and passed to the not shown programmable devices each provide a signal Sa and Sb from, if they have determined a proper location information.
• S3, S4 controls and thus is able to detect a certain combination of location information of the two pairs and to check for correctness.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2005
  • 2005-01-27 DE DE102005004629.0A patent/DE102005004629B4/de not_active Expired - Fee Related
• 2006
  • 2006-01-11 EP EP06704594A patent/EP1841617A1/de not_active Withdrawn
  • 2006-01-11 WO PCT/EP2006/050149 patent/WO2006079583A1/de active Application Filing
  • 2006-01-11 CN CN200680003320.6A patent/CN101111406B/zh not_active Expired - Fee Related
  • 2006-01-11 US US11/814,979 patent/US7737686B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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