DE1591595C - System for the automatic wireless transmission of multipart information between mutually movable interrogation and response devices, in particular the numbers of railway vehicles to stationary interrogation devices - Google Patents

Description

3 4

pass on delayed by this time interval. The interrogation signal changes its frequency

According to the invention, high-frequency voltage pulses are expediently applied to the screen filters for this purpose

a rectifier 18 delaying the response signals in the interrogation device, which initially generates the additional

Shift register and the marking signals lent marking signal pulse i _MZ and then one

A reluctant shift register is provided, which supplies through a 5 sequence of marking signals i _M , the schema:

Shift pulse generator are controlled and shown by table in the diagrams of FIG

which are at least twice the number of. -

Has register cells of the other, and that at the output of the response device, not shown, each register cell of the shift register with the sent response signal is connected to a control unit connected to the larger number of cells received and the rectifier 20 is sen, in which one when the supplied by all, which continues from it according to the resonator borrowed from the additional register cells of the other shift register and from the encryption network in the additional signal switched and the shift register selected and sent back in the associated register cell in the associated register cell 15 signal pulse i _AZ and a sequence of response signals of the same shift clock form actuated bistable toggle switch pulses i _A , which are shown schematically in diagram D 1, the simultaneous forwarding of both additional FIGS.

The rectifier 18 gives the marker signal pulses derive the signals fed to the shift register with the larger i _MZ and i _u and the rectifier 20 the response cell number in each case at the progress ao signal pulses i _AZ and i _A to the Comparator 191, which switches to the registers assigned to the control unit, determines the time interval between these pulses and causes the ster cell.

On the basis of the excitatory shown in the drawing, emits voltage when the additional response guide examples, the invention is below in more detail signal pulse i _AZ from the response device arrives later than explained. * 35 the additional marking signal pulse i _MZ from the raster

Fig. 1 shows schematically two diagrams of the filters. These impulses meet in reverse chronological order Sequence of response signal and sequence, the comparator 191 outputs a negative one kiersignalimpuls; Voltage "of the corresponding size. This voltage

F i g. 2 shows a block diagram of an arrangement is kept constant during this query period.

for aligning the time of the response and the 30th and at the beginning of the next query period

Marker signal pulses in an interrogator; in when comparing the additional signal pulses i _MZ

Fig. 3 is an expanded embodiment of an and i _AZ reset. Furthermore, this tension

Another possible arrangement is shown, which is fed to the pulse delay device 192, the

2 are switched in the order assumed in FIG. 1 and

can; 35 time shift Δ t of the additional pulse

Fig. 4 shows a for the embodiment according to i _AZ for the first arrived pulse i _MZ the following

Fig. 3 shows a suitable control unit in detail. The marking signal pulses i _M so much delayed that

For in the explanation and in the drawing, the output of the pulse delay device is the

written facilities, which already in the main - corresponding response signal and mar-

In the patent, the same beer signal impulses are picked up at the same time

used. can be, as the diagram D2 of FIG

Diagram D 1 shows the time shift. These impulses are then - as already in

Δ t of the response signal pulses i _{A described} for the marking main patent - assigned to the memory 19

signal impulses i _M in the interrogation device at a temperature leads and evaluated. This arrangement allows

temperature difference .Δ T between the reference filters of the Ab- 45 so that the corresponding

questioning device and the filters in the encryption network, the response signal and marker signal pulses, respectively

of the transponder. The temperature difference Δ T is simultaneously available for further evaluation,

so large that there is a shift in the Fig. 3 shows an embodiment of another

kiersignalimpulse by about a third of their spacing, which takes the place of the comparator 191

of each other. 50 and the pulse delay device 192

In diagram D 2 it can be switched by a delay. In this arrangement,

Marking signal pulses i _M delay the time shift of the response signal pulses i _AZ and i _A and the

of these pulses compared to the response signal pulses marking signal pulses i _MZ and i _M each a sliding

i _A canceled. This is provided, for example, with the in register 25 and 26, respectively. The shift register Fig. 2 shown arrangement of an interrogator 55 25 has, for example, four register cells and that

achieved. The microwave generator 15 generates the shift register 26 twice as much, i.e. eight register

for interrogating an answering device (not shown). The two shift registers 25 and 26 are

tes required, swept high frequencies and constantly by impulses from the shift pulse generator

feeds the transmitting antenna 27 via the directional coupler 16. The shift pulse generator has 13. A part of this feed line is fed by the rectifier 60, in the example chosen, an eight times higher clock rate.

• Coupler 16 decoupled and the so-called frequency as the marking signal pulses. Every cell

Raster filter 17 supplied. The raster filter contains both shift registers 26 and a control unit 28 is provided.

for example 60 resonators serving as reference feeds. At all first outputs I of each control

The mixer 29 is connected to the 60 different unit 28 in the usable frequency band, and it is uniform distributed frequencies are matched. 65 sen output with the input α of the gate circuit

An additional resonator is for example on a. 30 is connected. All second outputs II each

in the wobble range below this frequency band control unit 28 are connected to the further mixer

located frequency matched. In the periodic 31 and all inputs III with the same output b

5 6

the gate circuit 30 connected. To all inputs IV each other, the cells of the shift pulse generator of the control units 28, and at the further inputs 27 continuously connected shift register 26. In the transition c of the gate .30 is a start pulse 'example chosen it is assumed out the temperature line whose start pulse i _s In each case at the conditional shift of the two pulses i _MZ and the beginning of a query period from the wobble generator of the 5 1 ^ ₂ is so large that the marking signal pulse i _{MZ is} triggered in the high-frequency generator 15. The input to the third cell of the shift register 26 is connected to the output V of each control unit 28 when the response signal pulse i _{AZ is connected} to the first of the associated cell of the shift register 26. Cell of the also from the shift pulse generator 27 the. The shift register 25 only has an output at the last continuously switched shift register 25 one cell, which is connected to the input d of FIG. The two pulses i _MZ and i _AZ are then connected in the gate circuit 30. The output of the shift register concerned is switched evenly .feiter gate circuit 30 and the output of the mixer gate until the response signal pulse i _AZ from 31 lead the memory 19 to the memory 19 the last cell of shift register 25 in time to each other in the gate response signal pulses and marking signaling device 30 is transmitted . At the same time the impulse will increase. ib marking signal pulse i _MZ from the sixth into the

For a more detailed explanation of the control units 28 ', the seventh cell of the shift register 26 is switched. Reference is made to FIG. 4, in which such a gate circuit 30 is prepared in greater detail by the response signal pulse i _AZ control unit, for example, and provides a control indicator for the is. It contains a coincidence gate 281, whose output line b to input III of all control input signals has a bistable multivibrator 282 on the ao units 28, which is connected to an input of the coincidence shown right position from the start pulse at input 281 Since at this point in time gear IV is achieved, shifts to the left. In the marking signal pulse i _uz the seventh cell of this position gives control potential via the shift register 26, its output gives control output I of the control unit to the mixer 29 unit 28. The coincidence gate 281 only this one unit to a further coincidence gate 283, which via the control unit switches the relevant flip-flop 282 the output II a pulse to the mixer 31 in the left position. As a result, it is passed on via output I when the other input V emits the control potential. Furthermore, the coincidence unit and thus the other input of the second denz gate 283 is switched through, which via the off coincidence gate 283 from the output of the associated ₃₀ gang II one The potential given by the output I abZelle of the shift register 26 also receives control potential via the mixing gate 29. · to the gate circuit 30 and switches it through so that

In the following, the mode of operation of the arrangement during the relevant query period is all from the voltage according to FIG. 3 described in more detail. For this purpose, it is assumed that response signal pulses coming in shift register 25, that the response signal pulses i _{A are given} after the 35 i _A via the output e to the memory 19 further corresponding marking signal pulses i _M in this. Arriving from output II of the control input arrangement. At the beginning of the pulse output to be considered corresponds to the delayed query period, the wobble generator emits a mark signal pulse i _MZ and is transmitted via the mixed start pulse i _s , which is sent to memory 19 via the start pulse line from gate 31. This is for these flip-flops 282 of all control _{units 28 switches to the right position shown in 40} question period for the necessary time shift in FIG. 4 and the control unit circuit 30 corresponding to the two pulse trains blocks. Set by the high frequency generator 15. All of the following in this interrogation period will first pass through those for the additional resonator in the marking signal pulses i _M then also pass through the raster filter and the seventh cell and its associated control unit provided in the response device. The transmission power with this frequency at the same time as the corresponding response signal sequence arrives on the one hand via the directional coupler 16 pulses to the memory 19 .

Catch antenna of the answering device, not shown. In the example of Fig. 3, the answering

tes whose encryption network and transmitting antenna _as always signal pulses delayed by the same time and the receiving antenna 14 after, depending on the receiving detector whether 20 due to other temperature difference is said to have However, since the responder premise of between query and response unit, the Markiereine lower temperature than the waste signal pulses earlier or later than the response requesting apparatus, the resonance frequency of the arriving signal pulses in response, as when transferring the device arranged additional resonator is an ₅₅ additional response signal pulse i _AZ from the output of the temperature difference value corresponding higher of the shift register 25 in the gate circuit 30 of the the resonance frequency of the marking signal pulse i _uz associated with the raster filter in another neten additional resonator '. As a result, the cell of the shift register 26 is switched. For example, if the frequency generator 15 is already a little higher up, the frequency generator 15 generated a little later at the opposite temperature difference, the marking signal pulse i _AZ at this point in time in the transponder is set to resonance, so that the third cell and the associated control are switched to the outputs. The rectifiers 18 and 20 are set to form different units 28. The delay of the marking time pulses of the high frequency pulses generated by the additional resonance signal pulses is variable, and the direction of the temperature difference is adjustable,
namely first the marking signal pulse i _MZ 65. The use of the Syam rectifier 18 according to the invention and then the response signal system result in several advantages. For example, impuls /, 4JT on the rectifier 20. When adjusting the resonators, several

The marking signal pulse i _ul now passes through rätc different temperatures without

as a result, errors would occur during operation. The main advantage, however, is that without significant Increase in the effort in the interrogation device and in the response device, frequency errors can be compensated, caused by temperature differences between these devices. It is the same with this system possible to compensate for additional frequency errors caused by runtime differences between the Response signal and the marking signal arise.

The invention is not restricted to the exemplary embodiments described. It is also possible to feed the pulses i _AZ and i _{A to} the shift register 26 and the pulses i _MZ and i _{M to} the shift register 25. Then the delay of the marking signal impulses is fixed and that of the response signal impulses is adjustable depending on the temperature difference. Furthermore, a pre-delay of the response or the marking signal pulses can be achieved in that the resonators in the encryption network of the response device or in the grid filter of the interrogation device are tuned from the outset to a higher frequency than those of the other device, depending on the normal temperature difference to be expected. This automatically results in the desired delay of the relevant signal pulses, because the resonance frequency of the associated resonators is reached at a later point in time in each interrogation period.

1 sheet of drawings 309 613/237

Claims (2)

1 2 claims: in a previous frequency band in the microwave range a periodic frequency 1. System for automatic wireless overflow modifying "query signal sends out, * carry multi-digit information between the responder moving past that of the mutually movable interrogation and response S information assigned frequencies through filters devices, in particular the numbers of iron selects, which depart on resonance for these frequencies according to fixed interrogators, are tuned, and for each point of the information in which each interrogator has a given number of response frequencies NEN, in the microwave range, the useful frequency is sent back to the interrogation device, in which the interrogation frequency band a signal that periodically changes its frequency via matched reference filters for all in the which sends out the interrogation signal, from which the response signals in total provided frequencies Responding device moved past which the information unit generates a marking signal. mation assigned frequencies through filters Among other things, it is proposed in the main patent, selects the transponders tuned to resonance for these frequencies with a radio frequency line are to be provided, and the information section must be provided for each position, in which the above all mation a specified number of response lines as stub lines tuned to resonance sends back to the interrogator, in formed filters for the frequencies to be selected to which the query signal is coupled via coordinated reference. Furthermore, the individual high frequency filter for all in the response signals a total of quence line section with at least one, preferably provided Frequencies each a marking signal is generated as an antenna designed as a directional antenna, according to patent 1279785, ■ by being seen, the so indicated on the respective answering device, that in the interrogation and in each order is that the main maximum of their radiation responder an additional resonance circuit diagram when moving the transponder ' is seen, the one at one end of the useful on the interrogator which is also a directional antenna frequency band located frequency is tuned, 35 trained transmitting and receiving antenna over-! and that in the interrogator (Fig. 2) deletes facilities. (191 and 192) exist, which can use the temporal systems according to the main patent anywhere in Distance (At, Fig. 1) of the additional Reso railway signal systems can be used advantageously, nanzkreis generated marking signal (i _MZ ) ^{from to} ~ Between interrogation and response devices, tem- | Determine the appropriate response signal (i _AZ ) and min- 30 temperature differences arise if, for example, j at least for an inquiry period which is first an interrogation device under the permanent influence of I. received signal ftnz) subsequent signals direct sunlight was heated, response- · (iju) delayed by this time interval, the devices on the side facing away from the sun of surrender. . Vehicles are arranged and at this query 2. System according to claim 1, characterized by gekenri- 35 device being moved past, however, the fact that the interrogator has assumed the air temperature in the interrogation device. As a result, signals (β _Λ ) delaying shift register (25) are created in the interrogation device and in the response devices a shifting delaying the marking signals (i _M ) - different material expansions of the high register (26) are provided, which are provided by a sequence component and corresponding shifts of the shift pulse generator (27 ) are controlled and 4 ° resonance frequencies of the resonators against each other, of which one (26) at least twice. It is assumed, for example, that between the number of register cells of the other (25), the high-frequency components of an interrogation and one and that at the output each Register cell of the transponder has a temperature difference of 70 ° C. Shift register (26) with the larger number of cells. Since these components are advantageously connected to a control unit (28) made of aluminum, in which 45 minium is made, which has a thermal expansion when the coefficient of -24 · 10 ^-8 / ⁰ C is applied through all register cells, that of the other shift register (25) is advanced difference between the corresponding resonance frequencies of the additional signal (i _AZ ) and that of the own, for example, at a frequency of / = 3.6 GHz
Shift register (26) into the assigned register Ai - i aT 94 ΐη-β cell advanced other additional signals 50 ^Δ >~>'£ \ kf ήη <> a 1 η-β «ης 1 ne h,
(i _MZ ) actuated during the same sliding cycle = ³ ' ⁶ · 10 ⁹ · 70 · 24 · 10 ⁸ = 6.05 · 10 «Hz bistable flip-flop (282) the simultaneous so about 6 MHz. With a bandwidth of 18 MHz forwarding of both additional signals (i _AZ and for each resonator corresponds to a temperature i _MZ ) and for a query period the forwarding caused shift of the resonance frequency by that of the shift register (26) with the larger 55 6MHz already one third of the Bandwidth. _{Signals (f Ai} ) supplied here-cell number each time through there may possibly be errors in the evaluation of switching to the control unit (28), avoidance of which causes the existing register cell to be abandoned. lowing invention. According to the invention, this object is achieved 60 solves that in the interrogator and in each transponder an additional resonance circuit is provided which is based on a located at one end of the useful frequency band The main patent 1279 785 deals with a frequency tuned and that in the interrogator System for automatic wireless transmission of devices are available, which the temporal multi-digit information between each other stood 65 of the generated by the additional resonance circuit Movable interrogation and response devices, in particular identify marker signals from the associated response signal the numbers of railway vehicles and at least for one query period the stationary interrogators, in which each interrogator first received signal subsequent signals