DE2015674A1 - Circuit arrangement for selecting a ripple control receiver operating according to the pulse interval method - Google Patents

Description

Circuit arrangement for selecting one according to the pulse interval method working ripple control receiver

The invention relates to a. Circuit arrangement for Selection of a ripple control receiver that works according to the pulse interval method, in which a pulse circuit exercises * a normally open contact in the rhythm of the preselection and * control pulses received responsive receiving relay to a first iol of a DC voltage source is connected and which is controlled by a start pulse with a continuously rotating synchronous selector disc for each actuated one circuit switch arm that can be coupled, concentrically has pre-selection, main and extinguishing contact elements arranged around the synchronous selector disk, with one main contact element each, into one of the separate connection lines of the work coils one polarized command relay switched and in the common A switching element controlled by the preselection and extinguishing contact element is arranged on the connection line of the work coils.

Such a circuit arrangement is described in the earlier patent application P 16 90 115.8. The one in this circuit arrangement The thyristor located in the common connection line of the working batteries is activated by a thyristor during the closing period d®8 Preselection contact element incoming preselection ignited and thus gives the command relay for a subsequent actuation released by a corresponding control pulse. This circuit arrangement can be used for all types of preselection with active preselection pulses work, i.e. in which an impulse arrives during the closing period of the preselection contact element got to. For preselection types that work with passive 1 »* dialing pulses, such as monitored area code and reverse pre-beam) is this scarf. ·.

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arrangement arrangement, however, is not suitable. It should be mentioned by way of explanation that under your expression "passive preselection impulse" the non-occurrence a preselection pulse during the closing period "of a preselection contact member is understood. If a pulse still hits on, this means that all subsequent pulses do not apply to the ripple control receiver in question, and thus it does not may address.

The invention is based on the object of a circuit arrangement of the type described above, which is simple in structure and can be used for all types of preselection.

According to the invention, the stated object is achieved in that the of a bistable switching device is in the common connecting line of the working ψ coil arranged switching element in the switching function of at least, with its one control circuit by the Vorwahlkontaktglieö. can be connected to the pulse circuit and with its other control circuit through the extinguishing contact member to the first pole of the DC voltage source. According to a further embodiment of the invention, a particularly simple and advantageous embodiment consists in that the switching element is formed by the collector-emitter path of a blocking transistor, the base of which is connected to the emitter of one transistor of the bistable switching device designed as a flip-flop.

^ Based on an embodiment shown in the drawing ™ the subject matter of the invention is explained in more detail below. Show it:

Fig. 1 shows a circuit arrangement according to the invention for with active preselection pulses working preselection types,

Fig. 2 shows a circuit arrangement according to FIG. 1, but for with preselection types that work with passive preselection pulses,

3 shows a circuit arrangement according to FIG. 1 in connection with the receiving part of a ripple control receiver,

4 shows a structure constructed from the circuit arrangements according to FIGS. 1 and 2 Circuit combination for combination preselection. .

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The same parts are in all figures with the same designation marks Mistake. The resistors marked with 'merely have different resistance values.

In Tig. 1 and 2, r denotes a normally open contact of a receiving relay, not shown, which sends a pulse circuit in the rhythm of the preselection and control pulses received to the positive pole of a. DC voltage source switches. The connection poles of the circuit arrangement are labeled A and B. The control input II of a flip-flop consisting of the resistors R1 to R6 or R1 'to R6', the transistors T1 and T2 and a capacitor C1 is connected to the pulse circuit via a preselection contact member m and a resistor R9 or R9 ^1. The control input I is connected to the positive pole of the DC voltage source ^{via a resistor R8 or R8 1 and an extinguishing contact element m-.} The capacitor Cl is connected between the control input II and the emitter of the transistor T2, which in turn is connected to the connection point y. When the ripple control receiver is switched on, the base-emitter path of the transistor T2 is short-circuited by the capacitor at the first moment, so that the transistor T1 is turned on and the bistable multivibrator is thus brought into its defined starting position. The resistors R1 to R6 or R-1 'to R6' are also matched to one another in such a way that the transistor T1 is again turned on first, even if the voltage applied to the terminal poles A and B increases slowly. The emitter of the transistor T1 is connected to the connection point χ. The collector-emitter path of a blocking transistor T ^ is arranged in the circuit of a command relay KR which can be switched to the pulse circuit via on and off contact elements m and m, and a parallel resistor R7 bsw to its base-emitter path. R7 'is provided. The pulse circuit is connected to the negative pole via a bleeder resistor R1.3.

Should the circuit arrangement for one with active Yorwahlimpuls working preselection type are used, the blocking transistor T3 with the parallel resistor R7 between the

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Connection point y and the negative pole of the DC voltage source connected (Fig. 1). When using the circuit arrangement for a type of preselection with passive preselection pulses, however the blocking transistor T3 and the parallel resistor R7 'between the connection point χ and the negative pole of the DC voltage source connected (Fig. 2). In both cases, the other connection point is connected directly to the negative pole of the voltage source tied together. The same circuit board can be used for the mechanical structure of the circuit arrangement in both cases.

The circuit arrangement according to FIG. 1 is particularly suitable for monitoring the preselection. For this purpose - as shown in dashed lines - a monitoring _{contact member} m ü1 is connected with its one terminal pole to the pulse circuit and with its other terminal pole between the extinguishing contact member m- and the resistor R8. If a monitoring contact member πη, ρ in the circuit arrangement according to FIG. 2 - as indicated by dashed lines - is connected in _{parallel to the preselection contact member m y} , a start pulse length measurement is possible in a simple manner.

As already mentioned, the transistor T1 is turned on in the starting position. Thus, in the circuit arrangement according to FIG. 1, the transistor T2 and the blocking transistor T3 are blocked. If the preselection contact member m is now actuated and a preselection pulse arrives during its closing period, the bistable multivibrator is switched over and the blocking transistor T3 becomes conductive. The circuit of the command relay KR is thus closed except for the k contact paths of the on and off contact elements m _Q and m_. If a control pulse arrives during the closing period of the Feer contact elements, the command relay switches a consumer on or off according to the control pulse. At the end of a control process, the extinguishing contact element m · is actuated, whereby the control input I is connected to the positive pole of the DC voltage source and the bistable multivibrator is switched back to its starting position. The preselection can be monitored by a _{monitoring contact element} m ü1 arranged, for example, spatially immediately after the preselection contact element m. Stands above

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the closing duration of the preselection contact member m in addition to a preselection pulse assigned to this during the closing duration of the monitoring contact member m ~ * , or if a new pulse arrives during the closing _{duration r of} the monitoring contact member m ü1, then the pulse that arrived via the preselection contact member m is switched over before Flip-flop switched back to its starting position. The blocking transistor T3 is blocked again immediately and the command relay KR cannot execute a switching command during this control process.

In Pig. 2, the blocking transistor T3 with its parallel resistor R7 'is connected to the transistor T1, which is switched on in the starting position, and is consequently also switched on the closing time of the preselection contact element m no preselection pulse arrives. Nevertheless meet such a one, this means that the control signal transmitted this ripple control receiver is not for ^one determined and the command relay KR thus can not perform a switching command. This is achieved in this circuit arrangement in that the bistable multivibrator is switched over by the preselection pulse arriving during the closing period of the preselection contact element m, thereby blocking the transistor T1 and the blocking transistor T3. The circuit of the command relay is thus interrupted for the remainder of the control * process. By the extinguishing contact element m-, the bistable multivibrator is switched back to the starting position at the end of the control process. With a monitoring contact element m. ^ Connected in parallel with the preselection contact element m, a start pulse length measurement is possible in a particularly simple manner with this circuit arrangement. If the start pulse is still pending during the closing period of this monitoring contact element, which is arranged directly behind the start point of the switching arm, the trigger stage is switched over and the blocking transistor T3 is blocked. The command relay can then not execute a switching command.

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FIG. 3 shows the connection of a circuit arrangement according to FIG shown on the receiving part of a ripple control receiver. This receiving part has a band filter BF with legs an output pole to the control input of a B amplifier stage T 11, R12 and with its other terminal pole to the negative pole DC voltage source is connected. In this way, the pulses superimposed on the mains voltage are filtered out by the band filter and fed to the B amplifier stage, which energizes the receiving relay ER in time with the pulses, via its normally open contact r that puts it Receiving relay ER a coupling magnet KM to voltage, which connects a switching arm with a synchronous motor driven,

^ continuously rotating synchronous selector disc couples. This mechanical Parts are not shown in the drawing. An extinguishing combination R11 and C11 is connected in parallel to the coupling magnet. The connection point of the dome is through a diode D1

^ magnets KM and the extinguishing combination R11 and C11 of. the rest Pulse circuit is decoupled so that the negative voltage peaks that occur when the coupling magnet is switched off do not trigger false alarms can cause. In order to prevent uncontrolled charging of the pulse circuit behind the diode D1, the generated charges over the between the pulse circle and the leakage resistor R13 connected to the negative pole after the Negative pole derived.

The exemplary embodiment shown in FIG. 4 shows how a circuit combination suitable for the combination preselection can be constructed with the circuit arrangement according to the invention. In the circuit arrangements 1 and 2 of this circuit combination, the blocking transistor T3 is connected to the connection point χ, as in FIG. The circuit arrangement 3 corresponds to the circuit arrangement shown in FIG. 1. In the circuit combination, the collector-emitter paths of the blocking transistors T3 of the two circuit arrangements 1 and 2 are parallel between the base of the blocking transistor T3 of the circuit arrangement 3 and the minus pole of the DC voltage source.The collector-emitter path of the blocking transistor T3 of the circuit arrangement 3 is again in the circuit of the Kommendorelaie KR. The starting point was the circuit configuration

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the transistors T1 of the circuit arrangement 1 and 2 and thus also the blocking transistors T3 connected to them are conductive. The base of the transistor T2 of the circuit arrangement 3 is thus at negative potential via the collector-emitter path of these blocking transistors, so that the transistor T2 and the blocking transistor T3 of the circuit arrangement 3 controlled by it are blocked. If the ripple control receiver in question is to be controlled, a preselection pulse combination must be sent, the individual preselection pulses of which arrive when one of the preselection _{contact elements} τη ν1 » ^m _V 2 * ^m _V 3 is closed, the preselection contact element m, of the circuit arrangement being the last to be actuated . Due to the preselection pulses arriving during the closing period of the preselection contact elements m .... and m ρ, the flip-flops of the two circuit arrangements 1 and 2 are switched over, so that the blocking transistors T3 connected to these flip-flops are blocked. As a result, the direct connection of the base of the transistor T2 of the circuit arrangement 3 to the negative pole is canceled, so that this transistor can be controlled by a preselection pulse and thus also the blocking transistor T3 of the circuit arrangement 3 by a preselection pulse arriving during the closing period of the preselection contact member m "* * Konunandorelais KR is then released for the execution of a switching command. At the end of a control process, the flip-flops of the circuits 1 to 3 are switched back to their starting position connected to the positive pole of the DC voltage source switchable quenching circuit In order to avoid mutual influencing of the circuit arrangement, decoupling diodes D2 are provided in the quenching circuit.

With the circuit arrangement according to the invention can also Circuit combinations are built based on pulse combinations address, which consist of active and passive preselection pulses. Should one of the circuit arrangements shown in FIG 1 or 2 respond to a passive impulse, the blocking transistor T3 with its parallel resistor R7 '

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to the respective other transistor of the circuit arrangement concerned connected, i.e. the connection of the blocking transistor T3 is from the connection point χ to the connection point y too embarrassed. There is also the possibility to go through Connection of further circuit arrangements according to the invention, the number of possible preset pulse combinations raise.

According to a further embodiment of the invention, as a switching element i.n the common connection line of the work coils a polarized relay switch contact member is also provided be. The preselection contact member m and the extinguishing contact member m- are each in one of the separate connection lines of the Work coils switched so that the relay when a preselection pulse arrives during the closing period of the preselection contact member is switched and thereby sdhliess the circuit of the command relay via his changeover contact member. At the end During the control process, the other work coil is connected to voltage via the extinguishing contact element and the polarized relay switched back.

5 claims \ J., _.

4 figures r ^ ^u

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Claims (5)

Claims Circuit arrangement for selecting one according to the pulse interval method working ripple control receiver, in which a pulse circle via a normally open contact in the rhythm of received preselection and control pulses responding receiving relay .an a first pole of a DC voltage source is connected and that of a start impulse with a continuously rotating synchronous dial for each operated a circulating switch arm, concentrically has pre-selection, main contact and extinguishing contact members arranged around the synchronous dial, with one main contact member each switched into one of the separate connecting lines of the work coils of a polarized command relay and into the common connection line of the work coils is a switching element controlled by the preselection and extinguishing contact member is arranged, characterized in that the switching element arranged in the common connecting line of the work coils (13) depending on the switching of at least one bistable switching device (R1 to R6 or R1 to R6 and T1, 12.01), which with its one control circuit through the Preselection contact element (m) to the pulse circuit and with its other control circuit through the extinguishing contact element (m-,) to the first pole (+) of the DC voltage source can be switched on. 2. Circuit arrangement according to claim 1, characterized in that daif switching element is formed by the collector-emitter path of a blocking transistor (T3), the base of which is connected to the emitter of a transistor _t (T1 or T2) as a flip-flop (R1 to R6 or . R1 · to R6 · and T1, T2, 01) formed bistable switching device is connected. 3. Circuit arrangement according to claim 1 with monitored preselection, characterized in that a monitoring contact member (m ^ -j) with its one connection pole on the pulse circuit and with 1Q9842 / 0910 its other terminal between the extinguishing contact member, (m,) and a resistor (R8) of a quenching circuit is connected (Fig. 1). 4. Circuit arrangement according to claim 1 with start pulse length measurement, characterized in that a monitoring ^{contact member (m ^) P ara} ll ^e l is connected to the preselection contact member (m) (Pig. 2). 5. Circuit arrangement according to claim 1, characterized in that that as a switching element a switching contact member of a polarized Relay is provided. 109842/0910 L e r s e i t-e