DE2215255C2 - Device for distance measurements in vehicles which are held and guided in a freely floating manner in relation to a rail arrangement - Google Patents

Description

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made numerically visible to a display device 12 of known type. It should be noted here that the counters Π receive a start signal via their input 13 at the beginning of a counting or distance measurement. z. B. from a conventional counting start unit. Necessary calibration adapters, multiple redundant stages, mains supplies and the like are not shown for reasons of clarity.

Such a channel is made up of an amplifier for each transmitter 8 9, pulse stage 10, counting decades 11 and the like. For sculler control are useful for each vehicle has three transmitters and three channels accordingly, the last number of decades with can be linked to a common comparison level.

As can be seen from FIG. 1, the rails 2 are laid in fixed lengths and thereby form joint gaps 14. Using the joint gaps 14 as fixed points Accordingly, a photoelectric scanning of the rails 2 can also take place for distance measurements. For this purpose a- ~: the legs 6 of the vehicle 1 according to FIG. 3 photo elements 15 and associated Light generator 16 arranged so that only when driving over a gap 14 Lieht on the Photoelementc falls. The photocurrent that then arises in the photo elements 15 can be amplified can be converted into a defined pulse in pulse steps. This and the count of the impulses and the comparison of the individual counters can take place again in the manner already described. It goes without saying that in the case of the in FIG. 3, the photo elements 15 and light generator 16 are shown in the arrangement between the electromagnets, not shown there, for carrying and guiding the vehicle 1 on the respective Leg 6 are arranged.

Depending on the design of the driveway, supporting beams can also be used for joint gaps, fasteners and the like are scanned. It is also possible to scan busbars. In addition, at an arrangement of rails welded to one another, scanning for weld seams if necessary inductively, capacitively or also acoustically (ultrasound). In all cases where a If inductive scanning is possible, capacitive scanning can also be provided.

After all, the device described is niciu Limited to tracks with magnetic levitation de. · Vehicles. For example, in de: described way also distance measurements in Lu! '! - cushion vehicles especially then in a simple way Wei-e can be carried out if this is carried out by a :; Linear motor driven; here take place; expediently scanning the stationary engine part for fastening means. Joint gaps and the like

1 sheet of drawings

Claims (3)

1 2 are. The fixed points can be connecting parts: between the rails and the supporting structure; in this case inductive scanning is used 1. Set up for distance measurements on vehicle rails. It is also a photoelectric, which compared to a rail arrangement 5 see scanning using joint gaps are held and guided in a free-floating manner, with the possibility of fixed points between the rails. In jc by marked that on a regular basis can be placed on the driveway \ on Fixed points of the special measuring marks or the like that recur at regular intervals to form Rail arrangement or an associated supporting stretch intervals can be dispensed with. Furthermore IaLU Construction to subdivide the route of the io in the event of such an execution a Fehlerkon vehicles (1) Troll in way elements as counting steps in a simple manner. In addition brew for a digital path measuring system known per se only for both sides of the measuring device star of the vehicles (1) are provided. vuigcscren and the individual measurements together 2. Device according to claim 1, characterized in that it is compared. Speed measurement that the fixed points connection 15 gene can be linked in the usual way parts (bolt 7) between the rails (2) and the measuring system with a timer Support structure (support beam 3) are. ren. 3. Device according to claim 1, thereby being exemplary embodiments of the invention; m indicates that ii.e fixed points joint gaps are explained in more detail using a drawing. (14) are between the rails (2). 20 The drawing shows schematically in 4. Device according to claims 1 to 3, F i g. 1 is a plan view of a rail assembly by means of inductive scanning now »indicated only by dash-dotted lines Rails (2). pointed vehicle. 5. Device according to claims 1 and 3. F i e. 2 and 3 cross-sections through the rails by means of a photoelectric filing system and essential parts of the vehicle feel the rails (2). Fi g. 1. "with different possibilities of a contactless scanning of the rail arrangement are shown and Fig. 4 is a block diagram of a digital path 30 measuring system. The invention relates to a device for travel. As the travel path of a vehicle 1 is shown in FIG. 1.2 measurements on vehicles, soft against one and 3 an arrangement of magnetically conductive Rail arrangement held freely floating and provided rails 2, which together with leads are. associated support structures 3 outside the driving / .eug- In the case of rail-bound railways, extend with so-called 35 profiles. The vehicle 1 is compared to the linear influence of the vehicles, it is known to hold the rails 2 in a suspension layer by counting the intersection points of the sub-electromaenetc 4 and 5 (on the FahrHinen 6 of the vehicle to suppress external influences) . in crossed line cables the exact instantaneous direction. To drive the vehicle, determine the location of the vehicles and thus 40 a linear motor can be provided,
to determine their respective distance from a target point. Such a (contactless) distance measurement and driven vehicle 1 location determination solution, under certain circumstances, permits the ability to carry out a waiver, are shown in accordance with FIG. 2 (driven by the wheels of the vehicles, going from a starting point) at regular intervals (radium pulse generator); the latter only have to be provided for the recurring bolts 7 of the rail arrangement for safety reasons, ie counted for overburden. These bolts 7 are used for fastening surveillance and, if necessary, for correcting the horizontal rail parts on the respective Zugchöriberührungslosen distance measurement. gene support beam 3 and are z. B. at intervals of Arranged for tracks with magnetic or pneumatic 1 m. Accordingly, it has been one since the beginning The last number of bolts determined is a measure of how their vehicles are levitated Naturally, the odometer mentioned cannot be taken into account. the distance covered by the vehicle 1 in each case So there is the problem of a device to the driveway. create which either exact distance measurements. The counting of the bolts 7 takes place without contact at all possible or, when using a conventional inductive encoder 8, which from line control, to monitor the reasons for error control and to increase the if necessary, by means of this route failure safety on both vehicle screens at least measurements is usable. Object of the invention are present at least once. The inductance of the is to show a solution to this, whereby working on any so-called high-frequency oscillators little additional effort on the travel path of the throttle 8 changes each time you pass a BoI- witnesses should be dispensed with. 60 zens7, which results in a change in current. The To solve this problem, a device is an analog signal is amplified according to Figure 4 and in of the type mentioned at the outset according to the invention there is one connected downstream of the amplifier 9 in question. characterized in that the pulse stage 10 (analog-digital converter) in the recurring fixed points of the rail arrangement are converted into a defined impulse. An impulse tion or an associated supporting structure for the 65 cn's corresponds to a bolt or a set back Subdivision of the route of the vehicles in units of distance between two bolts. In (the im- elements as a counting step for a known pulse stage 10 downstream) conventional counting devices Provide digital measuring system of the vehicles 11 all pulses are digitally counted and on