DE1276741B - System for the transmission of operating signals and long-distance calls on aerial tramways - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

H04b

German class: 21 a2 - 39/40

Number:
File number:
Registration date:
Display day:

P 12 76 741.8-31 (J 28723)

August 6, 1965

5th September 1968

The invention relates to a system for the transmission of operating signals and long-distance calls in aerial tramways with two- or multi-car operation with inductive transmission via the pulling and opposing cable.

For the transmission of messages on cable cars or the like via the pull and counter rope, it is known instead of galvanic connections between the fixed facilities of the stations and the rope to use so-called continuous rope transmitters for inductive coupling. Such rope transmission transmitters are for example in the German patent specification 437746, the German Auslegeschrift 1062 751 and the German utility model 1803 559.

A coil concentrically surrounding the rope forms the primary winding and the rope loop forms the Secondary winding of a transformer.

In the case of cable cars, it is advisable to transmit at least the following signals:

1. Drive signals,

2. emergency stop signals,

3. Danger off signals,

4. Company long-distance calls between wagons and fixed stations (drive and opposite station),

5. Company long-distance calls between the fixed stations,

6. Transmission paths to the public telephone network via the fixed stations.

The object of the present invention is to provide a system for the transmission of operating signals and long-distance calls for aerial cableways with two or multiple car operation with inductive transmission via To create the pulling and opposing rope that ensures reliable signaling and easy monitoring allows, the inductive coupling at least in the fixed stations rope transmission are arranged.

The invention is characterized in that the transmission of each operating signal (travel, emergency stop and danger signals) is carried out by a frequency pair, the frequencies of which in the rest position are equal to the amplitude or power have that the amplitude or the power of a frequency when signaling is smaller by a certain amount than in the rest position and the amplitude or power of the other frequency by this certain amount is greater than in the rest position and that a central facility is provided that the individual frequency pairs on the equality of the sum of both amplitude or performance amounts monitored.

In such a system is further provided that in the vicinity of the drive station a

System for the transmission of operating signals and long-distance calls on aerial tramways

Applicant:

International Standard Electric Corporation,

New York, N.Y. (V. St. A.)

Representative:

Dipl.-Ing. H. Ciaessen, patent attorney,

7000 Stuttgart 1, Rotebühlstr. 70

Named as inventor:
Erich Spitzer,
Josef Langer,
Paul Fanto,
Gottfried Lampl,
Johann Piffero, Vienna

Claimed priority:

Austria from August 7, 1964 (A 6820/64)

central logic circuit is arranged in which the operating signals are processed and converted into control commands for the drive machine.
For the economical use of the transmission means (continuous cable transformer) it is further provided that the same frequency pairs with the same change are used for signaling at different times for different signals. It can e.g. B. be provided that the amplitude of the lower frequency is reduced and the amplitude of the higher frequency is reduced or vice versa for the finished signal and that the amplitude of the lower frequency is reduced and the amplitude of the higher frequency is increased or vice versa for the emergency signal.

For economic use of the transmission means, however, it can also be provided that the same Frequency pairs with opposite change for signaling at different times for different Signals are used. It can e.g. B. be provided that for the control of the slow speed after driving fast and fast

809 599/396

after slowing down the frequency pair with the same changes as is used for signaling for the finished signal.

With regard to the changes in driving speed, the invention can also provide that the Duration of a different travel speed depending on the duration of the trigger of a particular one Travel button is.

To ensure the connection paths, it is provided that the pulling rope or the opposing rope is on Overlap (contact with suspension cable, i.e. grounding) is checked by checking the sum of the frequency pair amplitudes or frequency pair power is checked for equality within certain limits and or or that the difference in resistance of the train-counter rope loop, z. B. against earth, with rope throw compared to the normal state is established. With regard to the company telephone system, it is intended that that the call in the company telephone system between the car and fixed stations with a single Frequency takes place by means of code calls and the discussions be handled in their frequency.

With regard to the telephone connection between the drive station and the opposite station, it can be provided that one or more connecting paths are provided between the drive station and the opposite station, whereby a two-wire separated installation method with amplitude modulation in the low frequency range (6.3 to 11.7 kHz) is used.

Finally, it can be provided for the telephone connection to the outside that between the drive station and the opposite station for further transmission of long-distance calls via the public telephone network etc. via a private branch exchange (im Hotel) one or more connection paths are provided, which are connected to a carrier-frequency transmission device (35 to 130 kHz). An example of the invention will now be explained in more detail with reference to the drawing. The figures show schematically the functions and the implementation of the invention, the connection paths shown not the actual course, namely via the pull and counter rope loop and via the continuous rope transformers, correspond.

F i g. 1 shows the ready-to-use signal, FIG. 2 shows the course of the departure signal, Fig. 3 shows the shutdown by the emergency stop button or by the rope brake in the event of a pull rope break, F i g. 4 shows the rope cover, FIG. 5 the signaling of danger, F i g. 6 represents the code call for the company telephone, FIG. 7 the company telephone connection and 8 shows the voice connections between the drive station and the opposite station for mutual communication and for external damage.

With 1 and 2, the two cars are referred to, which at the connection points between the pull rope 5 and counter rope 6 are connected to these. 3 and 4 are the pulleys of the drive station 7 and Remote station 8. These designations are the same in all figures. The suspension cable is omitted, over there this no signals are given.

In Fig. 1 shows the finished signal. The carriage 1 presses the finished button 16 (shown inside the box 1) and thus sends a frequency pair with the frequencies / ₃ and / ₄ to a corresponding receiver in the drive station 7 by means of a transmitter built into this carriage.

In the rest position, that is, when the key 16 in the carriage 1 has not yet been pressed, the frequencies / ₃ and / _{4 have} the same amplitude or the same power. If the key 16 is pressed, then, for example, the amplitude of the frequency / ₃ increases and the amplitude of the frequency f _i decreases by the same amount.

The sum of the amplitudes of the two frequencies in the rest position and in the working position are thus same. This equality is monitored by a discriminator in the receiving station 7. One falls Frequency off, then the monitoring device gives an alarm, which then initiates further measures (e.g. shutdown of the cable car or automatic reduction in speed).

As already mentioned, the above-mentioned signal is received in the drive station 7. There is one housed central logic, which evaluates all signals and converts control commands for the drive motor 21 or converted into control commands for acoustic and / or visual display devices.

The increase in amplitude or power, e.g. B. the frequency / ₃ versus the reduction in the amplitude or the power of the frequency / ₄ , is shown by a line above or below the frequency designation in the figures.

The ready signal of the carriage 1 causes the permanent lighting of the drive station 7 Lamp 14 and the sounding of the horn 15 as long as the button 16 is pressed. Further the ready-made lamp 11 lights up continuously.

The finished signal of the carriage 2 is transmitted to the drive station 7 in a similar way (press button 17) by means of a frequency pair / ₅ and f _6.

given. The lamp 13 then lights up permanently and the signal horn 15 sounds as long as the Button 17 is pressed. Furthermore, the ready-made lamp 12 lights up continuously. Only if both cars do If the ready signal has given, the trip can be triggered at a later point in time, thanks to the central logic. If a longer, adjustable time elapses between the ready-made signals from the trolleys, the central unit switches Logic everything off again, and the finished signals have to be given again.

For these signals, as well as for all other signals described below, there are two continuous cable transformers in each of the drive station 7 and the opposite station 8 one for receiving all operating signals and long distance calls and one for sending all operating signals and long distance calls. Of course you can only one continuous cable transformer can be provided, but this is more expensive because it is suitable Separating devices must be provided.

According to the design of the connection of the car with the pulling or counter rope there, too, continuous rope transformers or primary windings connected to the pull and counter rope used by transformers.

The pull rope and counter rope can be earthed or ungrounded.

In Fig. 2 the departure signaling is shown. The departure button 20 is in the drive station 7 pressed, whereby in the carriage 1 the lamp 11, in the carriage 2 the lamp 12, in the opposite station 8 the Lamp 18 and in the drive station the lamp 13 and 14 go out and furthermore in the carriage 1 of the Alarm clock 22, in car 2 the alarm clock 23

and in the opposite station the signal horn 19 sounds as long as the cable loop 5-6 is connected and a deflection on the button 20 is pressed. For kicking downhill. Within certain limit values (depending on the signal, a single identical frequency pair / _{7 is used} due to the natural resistance _{fluctuations) and / 8} , whereby the instrument does not give an alarm for amplitude or power. Outside of this

the frequency / _{8 is} decreased. The departure signal 5 limits and if these values a certain,

If the drive station 7 has an adjustable time via a transmitter, an alarm is given,

to the opposite station 8 and to the carriages 1 and 2

sends and received there by means of a receiver. Pull and counter rope earthing for the purpose of static

This signal is also sent via the circuit elements provided for the rope passage discharge

transformers. io be drawn. The pulleys 3 and 4 are

Only after the processes described can the sliding contacts 40, 44 be arranged, which are connected via grounding

Drive machine 21 are operated. This blocking filter 41,45 to derive direct current and to

takes care of the central logic. Receiving the low frequency signals connected to earth.

F i g. 3 shows the emergency stop signaling. For economic reasons, and this is an essential 15 support cable, the pull-counter-cable-loop feature of the invention can be used in this resistance to be monitored.
For example, the same frequencies as for the finished signaling, or in addition to the described signaling, but with reversed amplitude devices, the monitoring of the sum or frequency designations can be seen. This measure of the amplitudes or powers of the frequency pairs can definitely be taken, since the central logic in the rest position as well as in the working position is used by the temporal separation for checking the conduction paths, namely after driving comes to a standstill. Any dangerous drive machine is set or vice versa, these signals are displayed and the drive can be stopped immediately. machine used.

When the emergency stop signal is given, a so-called 25 F i g occurs. 5 shows the situation with the danger avoidance Braking of the prime mover 21. This signaling. This is only between the counter-will z. B. caused by the fact that the countershaft station 8 and the drive station 7 are provided. at brake is switched on. In the event of a particularly threatening danger, the system must immediately

In FIG. 3 is in each car 1 and 2 and can be shut down. The danger-off signals

the opposite station 8 an emergency stop button 24, 25 or 26 30 therefore differ from the emergency stop

shown. If this button is pressed, signals are given by the faster braking. If now

immediately via the central logic of the motor 21 softly the opposite station 8 presses the danger off button 64,

shut down, the corresponding emergency stop lamps 33, then it sends the frequency pair j _x and / ₂ , wherein

34, 35 and 30, 31, 32 light up continuously and which e.g. vary the amplitude or the power of / j

Signal horn 29 sounds. 35 increases and the amplitude or power of / ₂

In Fig. 3 is yet another emergency stop circuit that can be reduced by the same amount. In the

shown. Namely, if the pull rope 5 breaks, then the drive station 7 receives this important signal.

Carriages 1 and 2 would not catch on the suspension cable (and cause an immediate "hard" stop

shown) downhill. This is achieved by the drive machine 21, e.g. B. by incidence of

automatic rope brake prevents the countershaft brake from being applied every 40 and at the same time

Trolley clamped on the suspension cable. At the same time the shoe brake and the constant glow

If the contact 27 or 28 is closed, the danger off lamp 65 and the sounding of the

if a soft shutdown of the motor 21, a signal horn 66.

The corresponding emergency stop lights up continuously. The emergency stop or danger stop signals can be

lamp and sounding of the signal horn 29 causes. 45 understandable also from the drive station 7 itself

All of these signals in FIG. 3 will also be given. This can also be done via the central

transmitted via the rope passage transformers. Logic. But this way is expensive. the end

The drive after the application of the rope brake can only be for this reason the signals directly in the

After eliminating the error, transfer the trip by pressing drive station 7.

an emergency stop button immediately .with another finished 50 In Fig. 6 and 7 is the company telephone system

signaling and departure signaling are continued. between the carriages 1 and 2, the drive station 7

In Fig. 4 shows the signaling when the rope is thrown and the opposite station 8. Every body owns

shown. A rope throw is one call button 46, 47, 48, 49, an alarm clock 50, 51,

Touching the pull rope 5 or the counter rope 6 52, 53 and a handset 54, 55, 56, 57. For

with the support cable 42, for. B. at 43.

Throws can be assigned to dangerous abrasions frequency f ₉ . It must therefore be appropriate

lead, which can eventually cause a rope break. Transmitting and receiving devices can be provided.

For this reason, the car 1 presses the call button 46 in the example

brake dangerously in the event of a malfunction. The and gives a specific, the desired station

Braking is therefore similar to the Morse code (code call) assigned to the emergency stop, e.g. B. three times

Braking carried out smoothly, e.g. B. by falling short, d. H. briefly press the button three times

the countershaft brake. indicates the drive station 7. It hear next to the

In one case, e.g. B. the passage of the rope itself trans- calling all other positions 2, 7 and 8

formator 36 with a low frequency voltage from this Morse code by sounding their alarm clock 52,

the voltage source 38 can be applied. Ent- 65 51 and 53. Since this particular Morse code for

The drive station 7 is determined in accordance with the resistance value of the counter-pulling cable, only this lifts off

Loop5-6 is then on the instrument 39, which is over and can talk to the carriage 1 (Fig. 7).

the continuous cable transformer 37 to the train counter- Of course, the other locations

Pick up the phone, which connects the telephone connection to a conference call.

The code call takes place with a single frequency f ₉ , while the telephone calls themselves are carried out in their frequency, i.e. without conversion. This code call, as well as the telephone calls, also go through the same continuous rope transformers. F i g. 8 shows the connection between the drive station 7 (apparatus 60) and the opposite station 8 (apparatus 61) for operational calls. These are separated by the two-wire method with amplitude modulation in a frequency range of z. B. 6.3 kHz to 11.7 kHz. This speech channel or these speech channels are symbolized by the character AM. These connections are also made via the same continuous rope transformers.

In addition to this facility, the connection labeled FM can be set up, which consists of a carrier frequency connection, ζ. B. with the device of the type ZlH, is produced in a frequency range of z. B. 35 kHz to 135 kHz. Such a connection path is z. B. in the opposite station 8 via the public telephone network 9 and in the drive station? via the telephone extension system 10 of the mountain hotel.

A subscriber 63 can thus use the telephone network 9, via the valley station 8, via the train and Opposite 5-6, via the mountain station 7, via the private branch exchange 10 in the hotel with the hotel guest 62 speak. Of course, the valley station 8 and the mountain station 7 talk to another apparatus 59 over this connection path. All those phone calls go through the continuous rope transformers.

The invention has been described using an example with two fixed stations. Of course the invention can also be used for multi-car operation. With four cars z. B. still a middle station is provided, which has facilities similar to those of the opposite station.

Without deviating from the concept of the invention, the occupation of the drive station and the opposite station as well as z. B. one Car not required. By means of appropriate bridging, the system can then be accessed directly from the Cars can be controlled from.

The use according to the invention of frequency pairs with the same amplitude or the same power at rest and amplitude shifted by the same amount in the opposite direction or performance in working condition, is a sure guarantee that the signals will not pass through accidental double frequencies can be simulated. At the same time, it is also a safe and cheap surveillance the proper functioning of the system is guaranteed.

Claims (12)

Claims: 60 1. System for the transmission of operating signals and long-distance calls for aerial tramways with two- or multi-car operation with inductive transmission via the pulling and opposing cable, whereby for the inductive coupling Rope transmission transmitters are arranged at least in the fixed stations, characterized in that that the transmission of every operating signal (drive, emergency stop and danger signals) takes place by a frequency pair, the frequencies of which in the rest position have the same amplitude or have power that when signaling the amplitude or the power of the one Frequency is smaller by a certain amount than in the rest position and the amplitude or Power of the other frequency is greater than in the rest position by this specific amount and that a central device (7) is provided which the individual frequency pairs on the The equality of the sum of both amplitude and power amounts is monitored. 2. Installation according to claim 1, characterized in that each carriage and each fixed Station is assigned a single frequency pair for sending the operating signals. 3. Plant according to claim 1 or 2, characterized in that a central logic is arranged in the vicinity of the drive station, in which processes the operating signals and converts them into control commands for the prime mover will. 4! System according to Claim 1, 2 or 3, characterized in that the same frequency pairs have same change used for signaling at different times for different signals will. 5. Plant according to claim 4, characterized in that the amplitude for the finished signal the lower frequency is increased and the amplitude of the higher frequency is decreased or vice versa and that the amplitude of the lower frequency is reduced for the emergency signal and the amplitude of the higher frequency is increased or vice versa. 6. Installation according to claim 1, 2 or 3, characterized in that the same frequency pairs with opposite change to signaling at different times for different signals be used. 7. Installation according to claim 6, characterized in that for controlling the slow speed after driving fast and driving fast after driving slowly Frequency pair with the same changes as used for signaling the finished signal will. 8. Plant according to claim 6 or 7, characterized in that the duration of another Travel speed as a function of the length of time a particular travel button is pressed stands. 9. Installation according to one of claims 1 to 8, characterized in that to ensure of the connecting paths the pulling and / or the opposite rope on the cover (contact with the carrying rope, i.e. grounding) is checked by the fact that the sum of the frequency pair amplitudes or frequency pair powers is checked for equality and / or that the difference in resistance of the train-counter rope loop, z. B. against Earth, when the rope is thrown over against the normal state. 10. System according to one of claims 1 to 9, characterized in that the call in the Company telephone system between the cars and the stations with a single frequency by means of code calls and the conversations in their Frequency to be handled. 11. Installation according to one of claims 1 to 10, characterized in that one or more connecting paths are provided between the drive station and the opposite station, a two-wire separation layer method with amplitude modulation in the low frequency range (6.3 to 11.7 kHz) being used. 12. Plant according to one of claims 1 to 11, characterized in that between the to lo and the remote station for further transmission of long-distance calls via the public telephone network or one or more connection paths via a private branch exchange (in the hotel) are provided, which are made with a carrier-frequency transmission device (35 to 130 kHz). Considered publications:
German Patent No. 437764;
German Auslegeschrift No. 1062751;
German utility model No. 1803 559. For this purpose 2 sheets of drawings 809 599/396 8.68 © Bundesdruckerei Berlin