DE2154697C3 - Method and device for wireless control of at least two objects - Google Patents

Description

The invention relates to a method according to the preamble of claim 1. Such a method The method is already known ("BBC-Nachrichten" 1969, issue 10, pp. 570 to 575).

The wireless remote control of moving objects, including other locomotives and Belonging to cranes has established itself in many areas of technology. For example, the No longer does the locomotive driver perform shunting work in the railway system as he used to in the driver's cab Locomotive, but he controls it from a place from which he has the best overview of the system or has a certain part of the system, by means of a command device via radio.

The command device for a locomotive has, for example, a so-called drive brake switch, with which the drive commands "power on", "power constant", "quick brake", "service brake" and the like can be given. If one of the travel commands is set with the travel brake switch, the command transmitter emits a corresponding command signal which z. As for reasons of safety is coded and composed of a combination of a plurality of simultaneously existing sound frequencies. For the transmission of, for. B. coded, command signals from the command device to the locomotive is used by a high-frequency transmitter belonging to the command device, which emits the command signals as modulation of a carrier frequency over a VHF voice radio channel. In the locomotive, a command receiver is provided, which amplifies the transmitted RF signal is demodulated,

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evaluates and, after the evaluation, the enupre- whereby the error recipient remains involved.

Forward control device of the locomotive- If ! ^^ Ρ ^ Χίαί ^ Ά

^X \ Similarly, also work Funkfsrnr.tcuc- lack impulse for concern JJA ^

remote control of the channel can be provided. _7a t, i _he t-ann of the

In a fixed schedule, one after the other. By adding an additional counter, the receiver can be dimmed on the radio frequency channel and only during these periods of time that it can only be received after several ο p , mmando signals of a command device pubc is switched off and only then aen ^

»CHEESE? £ SSSr55SS l5 ^d ÄS _ÄS S:

“CHEESE? £ SSSr55SS

f ^ fifteen intervals controlled by conunando signals »XjSSJ ^

to prevent ^he u _m ^a Tehlsteuerungen, the system characterized particular S> ^ s to ronirnpulje

it can occur that the command devices to »that it to ™ ckart.gpn breakup

; "At the wrong point in time on the high-frequency ka-movements comes wöbei,» _; .r at g _Ab _

"Al are switched or that s.ch the transmission times remain from ^S > ^nchron 'ⁿ; _n ^PU ' ^S _b ^e :'' _kte ^ "respectively

SJlner predictors overlap, corresponding switch is of the object to be controlled h

According to the above-mentioned article in »BBC- the objects should take place. _{Seduction of} the

Sricht «1969, loc. Cit., Planned by the * ₅ DU« Aufgjbcj w, rd ta -J. ^V ^ S _wnenden

7ertralstation synchronizing impulses to the type of command mentioned aurui u c

Send out ste. These sync pulses switch features of the claim ^ gelo *

f in each command device a time circle, the We.tere ™ ™ \ ™ ** ^^ Z ™ result s.ch

one for this command device charaktensi.sche massive further training de ™ ^d "^ ^B _h J _{from the}

«Round off every radio interference to 4, The, ^A " ^ ₁₀ ^ ^B _f ^ 'Ü _en * «central station

liner zeroing of all commands from the command station 10 '"l ^ ^c J ^ ⁿ _{central station} 10

rinrerätes d h called for switching off the Oöjekts. Im Scndebereicti o-r ^ m. localized

IZ there, forward. <laB at ku ^ ci.ig. ";-""^^^ Γί ^ Γ £

to undesired jerky interruptions To each ^command X _n ^at _h f _s ^e 2 () 0 _m distance

the movements of the bz ,, of the objects ^^^^^^^^ T ^

^k ° Stt also known a remote control system (German locative in enjer Jerk £ ahnanlage Je ^ Kom-

see patent specification 1262412). at the ^ m emz.ger "! ^^» fSfrcau nzsendeT its high-frequency

FcrnstcucrsenJer to all objects to be controlled clock a Hochfrc ,, ^ ^ ^{CS's tr} j _{d F, mpfangs} Toggle

impulsc and one after the other m cycl.s.her subsequent receivers 16 ™ ^d * ™ * nmpfangsantenncn

emits fchlMpulses for one object each. Each ob- 55 tenne ": ^M ' ¹ ^^" iZcrätef Π 12 of the

ject contains a receiver mn cincm rakt.mpuls- on π ^% ^K ^ ^m ™ transmitting antenna 18 sent

as each with one of the receiving antennas 19 Then the described procedure is repeated

verbumdenen, not further shown high frequency.

frequency receiver. If one or more synchro-

The circuit behaves as follows when sending the command signals from pulse:

the command devices 11, 12 does not occur, 5 the ring counter 21 is automatically

that both transmitters 15 of the command devices 11, 12 are actively switched back to count 0, and

send or that the sending times of these two the process described above also runs without input

Transmitter 15 overlap, so that a sync pulse for one locomotive is released again. Included

motive certain command signals the other switches however after each transmitter cycle without

Affect locomotive, is in each of the command io arrival of a sync pulse takes place, the cycle

dog devices 11, 12 a time cycle with different kluszähler 24 by one counter position. At a

Arranged time constant which gives the transmitter a counter reading of the cycle counter 24 that is determined over time

staggered switches to the high-frequency channel, but this sends a signal to switch 23, which then

the switching on of the time circuits of one of which is switched off by and the gate circuit 22

The synchronizing pulse transmitted from the central station is blocked so that the ring counter does not continue to count and

is effective. the corresponding station no longer with the high-

The structure of a command device is to be linked to the hand frequency channel. However, this has to

of Fig. 2 will be explained in more detail. The time cycle of the consequence that the object to be controlled to avoid

Command device is instantly detected by a clock generator 20 from damage of any kind.

controlled ring counter 21 formed. Switches between »o.

the clock generator 20 and the ring counter 21 is a When the next incoming sync pulse is Gate circuit 22 (AND gate) switched, with which by setting the cycle counter 24 and the first of the ringer to zero Input the output of the clock 20 and counter 21 as well as by switching off and then the output of which is the input of the ring counter 21, switching on the switch 23 again is. The second input of the gate switch direction is brought back to its starting position, see above 22 is connected to an electronic switch 23 so that the above-described process takes place again the. Depending on the switching state of this switch 23 can.

is the gate circuit 22 for the clock signals of the clock encoder 20 permeable or blocked. The switch 23 is possible if there is a brief lack of synchronization depending on the count of one of the objects to be controlled 30 with the ring pulse Counter 21 connected cycle counter 24 avoid switching. This is especially true on factory floors tet. Furthermore, the switch 23 with the high frequency unpredictable and difficult radio supply frequency receiver 16 and can be of great importance in the case of problems. The time that the high-frequency receiver 16 continues to receive synchronous or ring counters without a synchronous pulse turned off. With the trailing edge 35 can fen, or the number of automatically the synchronizing pulses can be switched by the switch 23 via a repeating transmission cycle and thus by the counter-differentiating element 25 must be switched on again. stood, in which the cycle counter 24 the switch 23 The high-frequency receiver 16 is also interrupted and is basically determined by how the cycle counter 24 and the ring counter 21 request the ring counters in the individual commands. When occurring in the high-frequency receiver 16 4 ° rates can run synchronously without it as a result When synchronizing pulses occur, both the cycle and the different temperature response of the individual counters will be 24 as well as the ring counter 21 to zero or due to tolerances of the components puts. There is an overlap of the staggered transmission times.

The mode of operation of the arrangement described in FIG. 3 shows a pulse diagram that is as follows: If the high-frequency receiver 16 45 for a remote control system with ten command devices receives a synchronization pulse from the central station 10 and accordingly ten objects to be controlled, then the cycle counter 24 and the one that applies. This diagram shows how the ring counter 21 is set to zero and the switch 23 individual transmission times / up to f ₁₀ are switched off, so that the gate circuit 21, for which during the transmission time i, is in a first communication clock 20 emitted clock pulses blocked 50 mandogerät the transmitter of this command device is on. The ring counter 21 is therefore not switched on to the high-frequency channel, while it switches until with the trailing edge of the sync pulse transmission time f ₂ in a second command device of the ses over (ir the differentiating element 25 of the switch 23 like-transmitter of this second command device, etc. This has the consequence that the counter reading 11 _{corresponds to that of the time f s} , the high frequency pulse emitted by the clock generator 20 is permeable in al gate circuit 22 for the ten command devices The ring counter is switched on by the central station and, when the synchronous pulse is sent to the high-frequency output 1, switches the transmitter 15 to the high-frequency channel.

channel. When the counter reading is 2, the transmitter 15 is again from An expedient development of the invention

High-frequency channel is switched off, and one on-60 is thereby

their command device assigned ring counters indicate that the operating voltage of the individual transmitters

actually only switches the der and receiver belonging to this command device

Transmitter on the radio frequency channel. In the case of metering, when it is needed, i. i.e. if each

As of 3, the receiver 16 is again a syn- chronous transmitter or the receivers on the radio frequency

chronium pulse received, and the frequency channel should now be switched at 65. In expedient

Counter reading 3 of the ring counter 21 from counter reading 0 ger way can this switching function by the

Cycle counter 24 which is switched on to counter reading 1 can be perceived as ring counter 21 present

and the ring counter 21 are set to zero. the. The ring counter switches the counter when the count is 1

: voltage for the transmitter switched to the frequency channel at counter reading 2 on and at rstand 3 again. When the count is 10, the operating voltage for all high-frequency fingers switched on and when the count is 0 again

who turned off. In order to switch on the operating voltage of the transmitter, it has been found to be advantageous introduce a so-called lead time during a transmission cycle during which the operating voltage this transmitter can be switched on.

1 sheet of drawings

Claims (9)

Patent claims: 1. A method of wirelessly controlling at least two objects, in which for each object a separate, spatially remote from this and is part of an operator-actuated command unit generates command signals and these common via a all predictors radio frequency channel to the JE xo stays awhile object sends, in which control functions are triggered by the command signals, using a time graduation of the transmission times for the individual command devices that form a transmission cycle in such a way that synchronizing pulses transmitted by a central station trigger the transmission cycle at certain time intervals and thereby switch on time circuits assigned to a command device each , have time constants staggered in time, and that the time circuits switch a command device for a certain transmission time on the high-frequency channel according to their time constants, characterized in that the on »5 m Al time circuits switched on by a synchronizing pulse are automatically switched on again after the expiry of a transmission cycle, even if there are no further synchronizing pulses, and that the 7 controlling objects are switched off after a specified, selectable number of transmission cycles. 2. The method according to claim 1, characterized in that the by a sync pulse triggered and in the absence of one or more sync pulses that continue running automatically Send cycles are counted with the help of a cycle counter that when a certain one is reached Counter reading the respective command device a stop signal for the associated to be controlled Object gives and that in the event of a recurrence of the sync pulses the counting process is interrupted and the cycle counter is reset to its original position. 3. The method according to claim 1 or 2, characterized in that each of the time circuits of a clock assigned to the command device is controlled, one between the Time circuit and the clock switched gate circuit for the influencing the time circuit Output signals of the clock generator is opened or blocked and the gate circuit with With the help of a switch, the switching status is determined by the count of the cycle counter and the sync pulse is dependent. 4. Device for performing the method according to one of claims 1 to 3, characterized characterized in that a ring counter (21) controlled by a clock generator (20) is used as the tedder circuit is provided, the command device (11) on the high-frequency channel at a certain count sounds and actuates a cycle counter (24) to count the transmission cycles. 5. Device according to claim 4, characterized in that a ring counter (21) connected upstream of the gate circuit (22) is connected to the output of the clock generator (20) and an electronic switch (23), for influencing the switching state of the electronic switch (23 ) the cycle counter (24) and a high-frequency receiver (16) emitting the sync pulse are connected to the electronic switch (23). 6 Device according to claim 4 or 5, characterized in that the ring counter (21) can be synchronized with the hoof of the sync pulse in its starting position and that a zero position simultaneously with the synchronization the ring counter (21) and the cycle counter (24) takes place 7. Device according to one of claims 4 to 6, characterized in that the sync pulse is applied to a differentiating element (25) connected to the electronic switch (23) and is used in a differentiated form to influence the electronic switch (23) 8. Device according to one of claims 4 to 7, characterized in that the sync pulse is applied directly to the electrical switch (23). 9. Device according to one of claims 4 to 8, characterized in that the operating voltage of high-frequency transmitters (15) and high-frequency emr-catchers (16) of each command device (11, 12) can be switched on or off by the associated ring counter (21), wherein this takes place at a level of the ring counter (21) which is smaller or larger than the counter reading is, in which the connection or disconnection of the respective command device (11, 12) to or from the high frequency channel takes place.