KR102088061B1 - Method and device for monitoring the movement of several vehicles in a terminal of a cable lift, in particular of a chair lift or a cabin lift - Google Patents

Abstract

The device for monitoring the movement of several vehicles 2 to 6 at the terminal 7 of the cable lift 8, with respect to each vehicle present in the zones Z1 to Z4 of the terminal, is the position of the vehicle in that zone. Determining means 19 for determining, for each pair of consecutive vehicles, the separation distance D between the vehicles of the pair from the individual positions of the vehicles, and the stopping distance according to the position of at least one vehicle of the pair ( Da) and calculation means 20 for calculating a residual distance Drs equal to the difference between the separation distance D and the stop distance Da, and at least one residual distance Drs of the pair of vehicles Monitor means 21 for changing the speed of movement of the vehicles when is less than the safety distance.

Description

METHOD AND DEVICE FOR MONITORING THE MOVEMENT OF SEVERAL VEHICLES IN A TERMINAL OF A CABLE LIFT, IN PARTICULAR OF A CHAIR LIFT OR A CABIN LIFT}

The present invention relates to monitoring the movement of several vehicles at the terminal of a cable lift, in particular a chair lift or cabin lift, and more particularly a detachable cable lift.

Vehicles running at the terminal of the cable lift have a speed that allows passengers to safely get on and off the vehicles. Also, depending on the types of cable lifts, the vehicles running at the terminal may have the same or different speeds. For example, for non-separable cable lifts, the vehicles are attached to a hauling rope that runs through the terminal, the vehicles have the same speed, and the cable lift must slow down the rope if a passenger transfer occurs. In contrast, for detachable cable lifts, the holding rope is installed between the loading terminal and the unloading terminal and maintains a constant speed. Vehicles are separated from the holding rope and then placed on a rail in the terminal. Thereafter, the drive system moves the vehicles by pushing the vehicles on the rails. In detachable cable lifts, the vehicles may have different speeds at the terminal and collision risks may occur between the vehicles.

Currently, the movement of vehicles in a cable lift terminal uses two means of detecting the presence of vehicles in different zones of the terminal, for example two inductive sensors that allow determination of whether the vehicle is located between two sensors. Can be monitored by However, multiple sensors are required to cover the entire terminal, which makes maintenance operations difficult. Also, these sensors are generally sensitive to lightning and voltage surges.

It is an object of the present invention to remedy the above mentioned disadvantages, and in particular to provide a means of monitoring the speed of movement of vehicles at a terminal of a cable lift to prevent collisions between vehicles.

Another object of the present invention is to reduce the number of sensors.

According to one aspect of the invention, a method is proposed for monitoring the movement of several vehicles at a terminal of a cable lift, in particular a chair lift or cabin lift.

In that way:

For each vehicle present in at least one zone of the terminal, the position of the vehicle in that zone is determined;

For each pair of successive vehicles, the separation distance between the vehicles of the pair is determined from the individual positions of the vehicle of the pair, the stopping distance is determined according to the position of at least one vehicle of the pair, the separation distance and the stopping A residual distance equal to the difference between the distances is determined; And

The speed of movement of the vehicles is changed if at least one remaining distance of the pair of vehicles is less than the safety distance.

Thus, the distance between two vehicles can be determined to monitor the speed of movement of the vehicles to prevent the risks of vehicles colliding with each other. A method is provided in which the movement of vehicles in terminals can be secured. The distance between the vehicles is monitored to provide a more accurate way to monitor the movement of the vehicles. Thereafter, the distance between the vehicles can be optimized for faster movements, ie for terminals with high throughput. The tasks performed by the logic controller monitoring the terminal are also improved because the terminal only needs to check the distance between two consecutive vehicles. In particular, for a detachable chair lift, the distance between vehicles can be reduced, for example, by increasing the driving speed of the vehicles, while at the same time preventing collisions.

For each pair of consecutive vehicles it is possible to determine the safety distances respectively associated with the zones of the terminal, the stopping distance being determined in accordance with the position of the first vehicle of the pair following the second vehicle of the same pair, The movement speed is changed if at least one remaining distance of the pair of vehicles is less than the safety distance associated with the area in which the first vehicle of the pair is present.

Thus, because the safety distances are adjusted to the distance between the vehicles, disturbing stops are reduced, and the distance between the two vehicles can vary depending on the zones of the terminal in which the vehicles are located. The safety distance can be greater in the curved zones because the edges of the vehicles may contact each other.

Information about the speed of movement of the vehicles can also be measured, and the stopping distance of each of the pairs of vehicles is determined in accordance with the information and position on the measured speed of movement.

The terminal may include several digital image acquisition devices, each associated with several zones of the terminal, each image acquisition device generating at least one digital image indicating the zone to which the device is associated, and determining positions of the vehicles. The step of performing includes image processing in which the position of each vehicle present in the zone of the terminal is determined from at least one digital image representing the zone.

This method can also cause the number of sensors to be reduced and increase the driving reliability of the vehicles.

Each zone of the terminal may comprise a zone indicator, each image acquisition device is configured to generate at least one digital image that the device includes an indicator of an associated zone, each vehicle comprising a vehicle indicator, The image processing step includes the determination of the position of each vehicle present in the zone of the terminal from the distance between the vehicle indicator and the indicator of the zone present in the digital image representing the zone.

The terminal may include at least three identification devices of a radio frequency type, and determining positions of the vehicles may include processing of at least three position signals sent by each vehicle, respectively received by the radio frequency identification devices. And the position of each vehicle present in the zone of the terminal is determined from the received position signals.

The terminal may also include several presence detectors, each associated with several zones of the terminal, each presence detector generating a presence signal of the vehicle in the zone to which the presence detector is associated, and determining positions of the vehicle Checking the determined position of each vehicle present in the zone of the terminal with the presence signal of that vehicle in the zone.

According to another feature of the invention, a device for monitoring the movement of several vehicles at the terminal of a cable lift, in particular a chair lift or cabin lift, is proposed.

The device comprises determining means for determining the position of the vehicle in the zone relative to each vehicle present in at least one zone of the terminal, for each pair of successive vehicles from the respective positions of the pair of vehicles. Calculation means configured to calculate a separation distance between the pair of vehicles, a stop distance according to the position of at least one vehicle of the pair, and a residual distance equal to the difference between the separation distance and the stop distance, and at least one of the pair of vehicles Monitor means configured to change the speed of movement of the vehicles when the remaining distance is less than the safety distance.

The calculating means may be configured to calculate safety distances respectively associated with the zones of the terminal and to calculate a stop distance according to the position of the first vehicle of the pair following the second vehicle of the same pair for each pair of successive vehicles. And the monitoring means is adapted to change the speed of movement of the vehicles when the at least one remaining distance of the pair of vehicles is less than the safety distance associated with the area in which the first vehicle of the pair is present.

The device may comprise measuring means configured to measure information of the moving speed of the vehicles, wherein the calculating means is configured to calculate each stop distance of the pairs of vehicles in accordance with the information of the position and the measured speed.

The means for determining the positions of the vehicles includes several digital image acquisition devices, each associated with several zones of the terminal, each image acquisition device being configured to generate at least one digital image indicating the zone to which the device is associated, And image processing means configured to determine a position of each vehicle present in the zone of the terminal from at least one digital image indicating the zone.

Each zone of the terminal may comprise a zone indicator, each image acquisition device is configured to generate a digital image comprising an indicator of the associated zone, each vehicle comprising a vehicle indicator, and the image processing means being connected to the terminal And determine the position of each vehicle present in the zone from the distance between the vehicle indicator and the indicator of the zone present in the digital image representing the zone.

The means for determining the positions of the vehicles is at least three radio frequency identification devices of the radio frequency type configured to individually receive three position signals from which each vehicle originates, and the area of the terminal from the received position signals. Signal processing means configured to determine the position of each vehicle.

Each zone of the terminal may further comprise at least one presence detector configured to generate a presence signal of the vehicle in the zone, and the means for determining determines the determined position of each vehicle present in the zone of the terminal in the vehicle in the zone. It is configured to check with the presence signal of.

Other advantages and features will be more apparent from the following description of specific embodiments and implementation modes of the invention, given for the purpose of non-limiting illustration and illustrated in the accompanying drawings.
1 schematically illustrates a device for monitoring movement of vehicles in accordance with the present invention; And
2 schematically illustrates the main steps of a method of monitoring the movement of vehicles in accordance with the present invention.

In FIG. 1, the cable lift 8, in particular a chair lift or a cabin lift, more particularly, of several vehicles 2 to 6 (cabins, chairs) at the terminal 7 of the detachable cable lift 8. A monitor device 1 is shown that monitors movement. For example, certain vehicles 5, 6, such as vehicle 6 trying to enter terminal 7 and vehicle 5 exiting from the terminal, are located outside terminal 7. In a general way, the cable lift 8 comprises a holding rope 9 to which the vehicles 2 to 6 are attached, which rope is driven by a bull-wheel 10 housed in the terminal 7. And is driven to be moved by an electric type drive motor 11. In FIG. 1, the vehicles 2 to 6 move in the direction of movement indicated by the arrows with reference 12.

The terminal 7 further comprises a horseshoe-shaped rail 13 and a moving system 14 for moving the vehicles 2 to 6 on the rail. The vehicles travel in line on the rail 13. The movement system 14 comprises drive bars 15 designed to propel the vehicles 2 to 6 at the terminal 7 and a loop 16 on which the bars 15 are mounted. The loop 16 is driven by rotating in the same moving direction 12 as the holding rope 9 by the second motor 17. In particular, the drive bars 15 are arranged substantially perpendicular to the loop 16. Each vehicle 2 to 6 is further closed to secure the vehicle on the holding rope 9 when the vehicle leaves the terminal 7 and open to release the vehicle when the vehicle enters the terminal 7. A grip 18. The grip 18 of the vehicles 2 to 6 has rollers for allowing the vehicle to move on the rail 13 when the vehicle is released from the holding rope 9. In this way, the vehicles have different speeds at the terminal 7, in particular slower than the speed of the holding rope 9, when they are moved on the rail 13. In detail, vehicles running in terminal 7 may be located between two drive bars 15 and have a varying speed between the two bars 15 when the movement of the vehicles occurs.

The monitor device 1 comprises determining means 19 for determining the position of the vehicles 2 to 6 at the terminal 7, calculation means 20 and monitoring means for the movement speed Vs of the vehicles at the terminal 7. And (21). For example, the calculation means 20 and the monitor means 21 can be integrated in the electronic control unit (ECU).

The terminal 7 further comprises several more adjacent zones Z1 to Z4 on which the vehicles 2 to 6 run. In particular, the zones Z1 to Z4 of the terminal may have common parts overlapping to ensure the presence of the vehicle in at least one zone. In a general manner, the vehicles 2 to 6 enter the terminal 7 one by one via an entrance with the reference E. FIG. Afterwards, the vehicles enter the terminal 7 and move from one zone to another and exit from the terminal 7 via an outlet with the reference S. The determining means 19 can comprise digital image acquisition devices 22-25 configured to generate one or more digital images of the zones Z1-Z4 of the terminal 7. In detail, image acquisition devices 22 to 25 are associated with each zone Z1 to Z4 to generate one or more images of the zone to which the device is associated. Image acquisition devices 22 to 25 can be arranged in this manner, although a single vehicle exists in one zone in the normal operation of the vehicles, but several vehicles can exist in the same zone. The devices 22 to 25 are respectively coupled to the ECU by the connections 26 to 29. The determining means 19 further comprises image processing means 30, for example integrated in the ECU and configured to determine the position of the vehicle present in the image. In a general manner, if a vehicle is running in one zone, the device associated with that zone produces an image of the zone, and thus an image of the vehicle present in that zone. The image processing means 30 then analyzes the generated image to determine the position of the vehicle in the area in which the vehicle is present. Thus, it is possible to provide an accurate position of the vehicle in the region of the terminal 7. For example, each zone Z1-Z4 of terminal 7 can include zone indicators Rep1-Rep4, and each vehicle 2-6 has a vehicle indicator Rev2-Rev6. It may include. The zone indicators Rep1 to Rep4 are preferably fixed, and the distance Dp separating the two zone indicators is constant. If the vehicle is in one zone, the image generated by the device associated with that zone includes a zone indicator and an indicator of the vehicle present in the zone. Zone indicators Rep1 to Rep4 are also used to calibrate the image acquisition devices 22 to 25. It may also be envisaged to calibrate the image acquisition devices 22 to 25 and to use some fixed area indicators already present at the terminal to determine the position of the vehicles. For example, three indicators can be used for each zone, for example the second motor 17, the drive motor 11 of the holding rope 9, and the rail 13. The image processing means 30 then determines the position of the vehicle in the image from the distance Dref between the vehicle indicator and the zone indicator present in the image. In other words, the position of the vehicle in the image of one zone corresponds to the position of the vehicle in that zone. Vehicle indicators may be reflectors, for example, to improve the discrimination of digital image acquisition devices 22-25. The digital image acquisition devices 22 to 25 preferably produce a continuous flow of images, and the image processing means 30 determines the positions of the vehicles from the sample of the images.

The determining means 19 may further comprise at least three radio frequency identification devices. In order to reduce the number of sensors at the terminal, the terminal includes three radio frequency identification devices. Each vehicle also includes a radio frequency identification tag configured to receive a signal emitted by the radio frequency device and to emit a position signal. Each radio frequency device receives position signals emitted by vehicles running at a terminal. The ECU further comprises signal processing means configured to determine the position of each vehicle present in the region of the terminal from the received position signals.

Presence detectors 31 to 34 of inductive or capacitive type may also be added to check the correspondence of the position of the vehicle and the position provided by the position determining means 19. Presence detectors 31 to 34 are positioned at defined locations. For example, the detectors 31 to 34 can be located at the inlet of each zone Z1 to Z4 of the terminal 7. Each detector 31 to 34 is configured to generate a presence signal of the vehicle in the zone. The determining means is further configured to check the defined position of each vehicle from the generated presence signal. On each change of zone, the position of the vehicle is checked by presence detectors 31 to 34. Presence detectors 31 to 34 may also be used to trigger the generation of one or more images of the zone when the vehicle passes in front of the presence detector.

The calculation means 20 comprises a separation distance D, a stopping distance Da, and a residual distance for each pair P1, P2 of successive vehicles present in the zones Z1 to Z4 of the terminal 7. Calculate Dres). Vehicles running at the terminal 7 follow each other along the rail 13 and form consecutive pairs of vehicles P1, P2. In the embodiment shown in FIG. 1, the first vehicle 2 is in the first zone Z1 and the second vehicle 3 is in the second zone Z2 and precedes the first vehicle 2. do. Consecutive first and second vehicles 2, 3 form a first pair P1 of vehicles. The second pair P2 of vehicles comprises a third vehicle 4, some of which are present in the second vehicle 3 and the fourth zone Z4.

The separation distance D corresponds to the distance separating two consecutive vehicles of the same pair. Each separation distance D is determined from the individual positions of the pair of vehicles. For example, when digital image acquisition devices 22 to 25 are used, the separation distance D is determined from the determined reference distances of each vehicle at the terminal. For the indicator Rep1 of the first zone Z1, the reference distance Dref of the first vehicle 2 is equal to Dref1, and for the indicator Rep2 of the second zone Z2, the second vehicle ( The reference distance of 3) is equal to Dref2. The distance D between two vehicles 2, 3 of the first pair P1 is determined according to the relationship D = Dp1 + Dref2-Dref1, where Dp1 separates the two indicators Rep1 and Rep2. Distance. In a general manner, the distance D between two vehicles of a pair is determined according to the following equation:

D = Dp + Drefj-Drefi

here,

Dp: distance between two separate indicators of two zones in which the same pair of vehicles are present;

Drefi: the reference distance of the indicator of the zone in which the first vehicle is present, of a pair of first vehicles

Drefj: reference distance to the indicator of the zone in which the second vehicle is present, of the second vehicle preceding the first vehicle of the same pair.

For example, two zones in which the same pair of vehicles are present may be the same if both vehicles in the pair are present in the same zone. When radio frequency devices are used, the separation distance D is determined from the determined positions of the vehicles.

The calculating means 20 is further configured to calculate the stopping distance Da for each vehicle present in the region of the terminal 7. The stopping distance Da is calculated according to the position of the vehicle in one zone. The monitor device 1 further comprises speed measuring means configured to measure information of the moving speed Vs of the vehicles, wherein the calculating means 20 is stopped at each stop of the vehicle present in one zone of the terminal 7. The distance is calculated from the vehicle position and measured travel speed information in the zone. The movement speed information is preferably the movement speed (Vs) of the vehicles themselves. The moving speed Vs of the vehicles corresponds to the speed of the loop 16 of the moving system 14. Since it is not necessary to measure the moving speed of the vehicle running at the terminal, the calculation of the stopping distance Da is therefore easy. As a variant, the speed measuring means can measure the moving speed of each of the vehicles running in the terminal 7, and the calculating means 20 measures the measured moving speed of the vehicle and from the position of the vehicle in one zone. Calculate the respective stopping distance of the vehicle from

Then, the calculation means 20 is followed by the separation distance D of the two vehicles of the pair, with respect to each pair P1, P2 of the vehicles present in the terminal 7, followed by the second vehicle of the same pair. The residual distance Dres equal to the difference between the stop distances of the first vehicle of the pair that follows is calculated according to the equation Dres = D-Da.

The monitoring means 21 further comprises the moving speed of the vehicles when the at least one remaining distance of the pair of vehicles is less than the safety distance DsZi associated with the zones Z1 to Z4 in which the first vehicle of the pair is present. (Vs) is configured to change. The monitor means 21 is coupled to the drive motor 11 of the bull wheel 10 and the drive motor 17 of the loop 16 by connecting parts 35, 36, respectively, and with the holding rope 9 and The motors 11, 17 can be controlled to change the speed of the loop 16. The monitor means 21 further refer to the safety distance DsZi table, in which each safety distance DsZi has a value defined according to the zones Z1 to Z4 with which they are associated. For example, the second zone Z2 is located at the curvature of the rail 13 and the value of the associated safety distance DsZ2 corresponds to the first zone Z1 corresponding to the zone in which the rail 13 is on a straight portion. ) Is greater than the value of the safety distance DsZ1 associated with In particular, the safety distances DsZi can be calculated by the calculation means 20. Advantageously, safety distances DsZi are calculated according to the type of vehicle present in the zones with which they are associated. For example, if the vehicle present in one zone of the terminal is a maintenance vehicle, the size is smaller than the size of the other vehicles. In this case, the safety distance associated with the zone in which the maintenance vehicle is present can only have a higher value for this type of vehicle. If at least one residual distance Dres of the pair of vehicles is greater than the safety distance DsZi, the first vehicle of the pair is at a sufficient distance from the second vehicle preceding the vehicle, and there is no risk of collision. Do not. In this case, the driving speed Vs of the vehicles can be increased so that the vehicles move towards each other, thus increasing the throughput of the terminal. In contrast, when at least one residual distance Dres of a pair of vehicles is less than the safety distance DsZi, the first vehicle of the pair is too close to the second vehicle that precedes the vehicle, and there is no risk of collision. Occurs. In this case, the monitoring means 21 can reduce the drive speed Vs of the vehicles or stop the motors 11, 17 according to the value of the remaining distance Drs.

In FIG. 2, the main steps of the method of monitoring the movement of vehicles at the terminal of the cable lift are schematically shown. The method can be implemented by the monitor device 1 described in FIG. 1. The method can be implemented in microprocessors or logic circuits inserted in the ECU or in software form.

The method comprises a first determining step S1 in which the position of each vehicle present in the zone of the terminal is determined. Then, in a second step S3, the separation distance D between two consecutive vehicles of the pair of vehicles is determined from the individual positions of the two vehicles of the pair. In a third step S4, the stopping distance is determined according to the position of the first vehicle of the pair following the second vehicle of the same pair. Then, in the fourth step S5, for each pair of vehicles present in different zones of the terminal, a residual distance Drs equal to the difference between the separation distance D and the stopping distance Da is determined. In a fifth step S7, the remaining distance of each pair of vehicles is compared with the safety distances DsZi respectively associated with the zones Z1 to Z4 in which the first vehicles of each pair are present. If the at least one remaining distance is less than the associated safety distance, the speed of movement of the vehicles is changed in the sixth step S8, otherwise the steps of the method are repeated. The method may further comprise a step S2 of measuring the information of the movement speed Vs of the vehicles, in the third step S4, each stopping distance is determined from the information of the measured speed Vs. . The method advantageously further comprises a step S6 of determining the safety distances DsZi, wherein each safety distance DsZi is determined from the type of vehicle present in the zone with which the safety distance is associated.

The method and system described above is particularly suitable for detachable cable lifts to ensure high passenger throughput while at the same time preventing the risks of collision.

Claims (14)

A method of monitoring the movement of some vehicles at the terminal of a cable lift,
For each vehicle present in at least one zone of the terminal, the position of the vehicle in the zone is determined (S1);
For each pair of successive vehicles, the separation distance between the vehicles of the pair is determined from the individual positions of the vehicles of the pair (S3) and the stopping distance is determined according to the position of at least one vehicle of the pair (S4) ), A residual distance equal to the difference between the separation distance and the stop distance is determined (S5); And
The speed of movement of the vehicles is changed if at least one remaining distance of the pair of vehicles is less than the safety distance (S8);
The terminal comprises several presence detectors each associated with several zones of the terminal, each presence detector generating a presence signal of the vehicle in the zone with which the presence detector is associated, determining the positions of the vehicle (S1) ) Checking the determined position of each vehicle present in the zone of the terminal with the presence signal of the vehicle in the zone. The method of claim 1,
Safety distances respectively associated with zones of the terminal are determined (S6), and for each pair of consecutive vehicles, the stopping distance is determined according to the position of the first vehicle of the pair following the second vehicle of the same pair, And the speed of movement of the vehicles is changed when the at least one remaining distance of the pair of vehicles is less than the safety distance associated with the area in which the first vehicle of the pair is present (S8). The method of claim 1,
Wherein information of the speed of movement of the vehicles is measured (S2), and each stop distance of the pair of vehicles is determined according to the position and the measured speed information (S4). The method of claim 1,
The terminal includes several digital image acquisition devices, each associated with several zones of the terminal, each image acquisition device generating at least one digital image indicative of the zone to which the device is associated, and the positions of the positions of the vehicles. The determining step (S1) comprises an image processing step in which the position of each vehicle present in the zone of the terminal is determined from at least one digital image indicating the zone. The method of claim 4, wherein
Each zone of the terminal comprises a zone indicator, each image acquisition device is configured to generate at least one digital image that includes a zone indicator of the zone to which the device is associated,
Each vehicle includes a vehicle indicator, and the image processing step includes the position of each vehicle present in the zone of the terminal from the distance between the vehicle indicator and the indicator of the zone present in the digital image representing the zone. Determining (S1) of the vehicle. The method of claim 1,
The terminal comprises at least three radio frequency identification devices,
Determining step S1 of the positions of the vehicles comprises processing of at least three position signals sent by each vehicle, respectively received by the radio frequency identification devices,
Wherein the position of each vehicle present in the zone of the terminal is determined from the received position signals. A device for monitoring the movement of several vehicles (2 to 6) at a terminal (7) of a cable lift (8),
Determining means 19, configured for determining the position of the vehicle in the zone, for each vehicle present in at least one zone Z1 to Z4 of the terminal,
For each pair of successive vehicles, the separation distance D between the vehicles of the pair from the individual positions of the pair of vehicles, the stopping distance Da according to the position of the at least one vehicle of the pair, and the separation Calculating means 20 configured to calculate a residual distance Drs equal to the difference between the distance D and the stop distance Da, and
Monitor means 21 configured to change the moving speed of the vehicles when at least one residual distance Drs of the pair of vehicles is less than the safety distance DsZi,
Each zone Z1 to Z4 of the terminal comprises at least one presence detector 31 to 34 configured to generate a presence signal of the vehicle in the zone, wherein the determining means 19 is present in the zone of the terminal. And check the determined position of each vehicle with the presence signal of the vehicle in the zone. The method of claim 7, wherein
The calculating means 20 calculates safety distances DsZi respectively associated with the zones Z1 to Z4 of the terminal, and for each pair of successive vehicles, the pair following the second vehicle of the same pair Calculate a stopping distance Da in accordance with the position of the first vehicle of, and
The monitoring means 21 is adapted to change the speed of movement of the vehicles when at least one residual distance Dres of the pair of vehicles is less than the safety distance DsZi associated with the zone in which the first vehicle of the pair is present. Device for monitoring movement of vehicles. The method of claim 7, wherein
Measuring means configured to measure information of the speed of movement of the vehicles,
And said calculating means (20) is configured to calculate a respective stopping distance Da of each of said pair of vehicles in accordance with said position and measured velocity information. The method of claim 7, wherein
The means for determining 19 of the positions of the vehicles are several digital image acquisition devices 22 to 25 respectively associated with several zones Z1 to Z4 of the terminal, each image acquisition device having a zone associated with the device. Image processing configured to generate at least one digital image to display, from the at least one digital image representing the zone, the position of the digital image acquisition devices and each vehicle present in the zone of the terminal. Means (30) for monitoring the movement of vehicles. The method of claim 10,
Each zone Z1-Z4 of the terminal comprises zone indicators Rep1-Rep4, and each image acquisition device 22-25 is configured to generate a digital image comprising an indicator of the associated zone, Each vehicle 2 to 6 comprises vehicle indicators Rev2 to Rev6, and the image processing means 30 determines the position of each vehicle present in the zone of the terminal, the vehicle indicator and the zone. And determine from the distance between the indicators of the zones present in the digital image indicating the movement of the vehicle. The method of claim 7, wherein
The means for determining the positions of the vehicles 19 is at least three radio frequency identification devices configured to individually receive three position signals from which each vehicle transmits, and in the area of the terminal from the received position signals. Device for monitoring movement of vehicles, the apparatus comprising signal processing means configured to determine a position of each vehicle. The method of claim 1,
And the cable lift is a chair lift or a cabin lift. The method of claim 7, wherein
And the cable lift is a chair lift or a cabin lift.

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