DE599222C - Receiving device for telecontrol systems operated according to the pulse frequency method - Google Patents

Description

GERMAN EMPIRE

fed. ' Own dome

17 JUL 1334

ISSUED AIB
JUNE 27, 1934

REICH PATENT OFFICE

PATENT LETTERING

CLASS 74b GROUP Sos

Siemens & Halske Akt.-Ges. in Berlin-Siemensstadt *)

Patented in the German Empire on December 19, 1930

With the pulse frequency method, in usually the remotely transmitted pulse train at the receiving point by a pulse train simulated constant intensity and this a sluggish measuring device ο. Like. Forwarded. in the In general, a capacitor is used for this purpose, which is in time with the remotely transmitted Pulses are charged or recharged via the measuring device from a power source of constant voltage. To be too big To avoid attenuation of the measuring device, one has so far the capacitor by means of a two-pole changeover relay switched into the measuring circuit in such a way that it is switched on with each remotely transmitted pulse is reloaded, in such a way that the first charging current surge when the changeover relay is excited and the second charging current surge when Dropping of the changeover relay is passed over the measuring device. So here it becomes the remotely transmitted pulse train into a pulse train of constant intensity and double frequency converted so that with reference to the measuring device to be influenced ο. the like The pause between two remotely transmitted impulses is partly due to the second Charging current surge is filled out. It does not therefore need the inertia of the measuring device to be large, as if the capacitor was only used for each remote pulse charged and thus only one charging current surge is passed through the measuring device.

The previous device, which is very advantageous in its mode of operation, has the disadvantage that it requires a two-pole changeover relay to reload the capacitor, the is relatively expensive. The invention has therefore set itself the task of maintaining the advantages of the previous device to design this so that a relatively cheap, simple, unipolar Changeover relay is sufficient. This is achieved in that, according to the invention, two over the circuits to be set are alternately closed and an on +5 pole changeover relay excited by the transmitted pulse train is provided, which by means of its armature when excited by a pulse of the switch relay assigned Pulse train closes one circuit and the other circuit during the subsequent pulse pause.

Two exemplary embodiments of the subject matter of the invention are shown in the drawing. In Fig. 1, 1 is the excitation winding connected to the long-distance line 2 of a single-pole changeover ^{relay located at the receiving point, the armature i a of} which is held in ^{contact with the contact i 6} by means of a return spring when the relay is de-energized

*) The patent seeker stated as the inventor:

Armin Ohlhans in Berlin-Haselhorst.

and when the relay is energized against the second contact i ^c . 3 and 4 are two capacitors in series with respect to a direct current source 5 and a measuring device 6. A resistor 7 is connected to the capacitor 3 via the contact i ^{b of} the switch relay and a resistor 8 is parallel to the capacitor 4 via the contact i ^{c of the switch relay} switched.
The mode of operation of the device is as follows: In the illustrated rest position of the relay 1, the capacitor 3 is short-circuited via the resistor 7, while the full voltage of the current source 5 is applied to the capacitor 4. If the changeover relay 1 is now excited by a remotely transmitted pulse, the armature i ° is placed against the contact i ^c and a circuit is thereby closed which flows from the positive pole of the power source 5 via the measuring device 6, the resistor 8, the armature i ^a , the initially not charged capacitor 3 leads to the negative pole of the power source. A current thus runs through the measuring device 6 until the capacitor 3 is charged. With this process, a discharge of the capacitor 4 short-circuited via the armature i ^{a and the resistor 8 is connected at the same time.} After the current pulse supplied via the long-distance line 2 has ceased, the relay 1 drops out and the armature i ^a again makes contact with the mating contact i ^b . As a result, a second circuit is closed, which leads the initially discharged capacitor 4, the armature 1 °, the resistor 7 from the positive pole of the current source 5 via the measuring device 6 back to the other pole of the current source 5. As a result, the capacitor 4 is charged via the circuit mentioned, and the energy used to charge the capacitor 4 is thus passed via the measuring device 6. In the meantime, the capacitor 3 discharges through the resistor 7. When the next remote-transmitted pulse arrives, the processes are repeated accordingly.

The capacitors 3 and 4 are expediently dimensioned to be the same size; necessary in itself however, it is not. It goes without saying that instead of that in the embodiment Included measuring device 6 also another to be set depending on the frequency of the remotely transmitted pulse train Organ, e.g. B. a control device o. The like. Can occur.

In the embodiment according to FIG. 2 , ι is again the winding of a single-pole changeover relay connected to the trunk line 2, the armature of ^{which is held against the contact i ö} by means of a spring when the relay is not energized and is applied ^{to the contact i c when the relay is energized} . 10 with a schematically indicated pulse transmitter is referred to; The measuring device used in the exemplary embodiment is an ouotient measuring device 11 whose one coil, which has to apply the counter torque to the other coil designated by 11 "in the drawing, is split into two coils n ^b and ii ^c . The coils" are constantly connected to the two Series connected power sources 12 and 13 connected. The coil 11 & is connected with its one terminal to the negative pole of the power source 12 and with its other terminal led to the contact i ^{b of} the changeover relay, while the coil ii ^{c is} connected with its one terminal to the contact i ^c and with its other terminal Terminal to the positive pole of the power source 13 'is. 14 is a capacitor connected on the one hand to the current source 12 and on the other hand to the current source 13 in series, and 15 is a damping resistor connected upstream of it.

The mode of operation of the exemplary embodiment according to FIG. 2 is therefore as follows: In the illustrated rest position of the single-pole changeover relay, a circuit is closed which starts from the positive pole of the power source 12 via the resistor 15, the capacitor 14, the armature i ^a , the winding n ^{& leads} back to the negative pole of the current source 12. The capacitor 14 is thus positively charged in accordance with the polarity of the current source 12. If the changeover relay is now excited by a remotely transmitted pulse, the armature i ^fl opens the contact at i ^b and closes a circuit at i ^c , which runs from the positive pole of the power source 13 via the coil 11 ^c , the armature i °, the capacitor 14 and the resistor 15 leads back to the negative pole of the current source 13. As a result, the capacitor 14 is reloaded ^{via the coil n c.} The charging current surge has the direction which is indicated by the arrow attached to ^{the coil n c.} After the remotely transmitted current pulse has ceased, the armature i ° returns to the rest position and closes a circuit that leads from the positive pole of the power source 12 via the resistor 15, the capacitor 14, the coil ii * back to the negative pole of the power source 12. The capacitor 14 is therefore again reloaded; the charging current surge has the direction indicated by the arrow attached to the coils *. The processes are repeated accordingly with the next remote pulse.

As can be seen from the arrows drawn ^{for the coils n &} and n ^{c, the}

fall of the changeover relay caused by the coil n ^c and the coil ii ⁶ conducted charging current surges in the same direction. As a result, the setting of the quotient measuring device is the same as if it contained only two coils, as is the case with the otherwise common devices. As is easy to see, the deflection of the ouotient measuring device is therefore clear from the frequency

ο determined by the remotely transmitted pulse train. The use of an ouotient measuring device, z. B. the Kreuzspultype, has the advantage that the display, as known, from the voltage is independent of the power source used.

Of course, if you have weak voltage fluctuations in compensates in any known way or does not require very high accuracy becomes, an ordinary, heavily subdued

ο Use a moving coil instrument whose moving coil is also like the one of the The quotient measuring device shown in Fig. 2, would be divided accordingly into two coils,

r so, for example, that there are two parallel adjacent, on the same axis provides attached frame coils.

Claims (6)

Patent claims: ο i. Receiving device for after Pulse frequency method 'operated telecontrol systems, by means of which the transmitted Pulse sequence at the receiving point by charging or reloading a capacitor arrangement is converted into a pulse train of constant intensity and double frequency, characterized in that that via a device to be set (6 or ii) two circuits alternate o are closed and that a single-pole one excited by the transmitted pulse train Changeover relay is provided, which by means of its armature when excited by a pulse of the changeover relay assigned pulse sequence to one circuit and the other circuit during the subsequent pulse pause closes. 2. Receiving device according to claim i, characterized in that in Each circuit has a capacitor inserted in such a way that when the circuit is closed via the one capacitor the capacitor of the other circuit is short-circuited. 3. Receiving device according to claim 2, characterized in that the two capacitors are connected in series with respect to the device to be set and the power source and each capacitor Via one contact and the armature of the single-pole changeover relay, one resistor or one line in parallel is switched. 4. Receiving device according to claim i, characterized in that the both circuits contain a common capacitor and a power source each, which have opposite polarity with respect to the common capacitor. 5. Receiving device according to claim 4, characterized in that the both circuits are routed via different coils of a device to be set are, these are connected in such a way in the circuits that they share the common axis of rotation in the same sense looking to turn. 6. Receiving device according to claim 5, characterized by a quotient measuring device, z. B. Cross-coil instrument, one of which is a coil that generates the counter-torque to the other coil, is dissolved into two windings, one of which is in one and the other is switched to the other circuit. For this purpose ι sheet of drawings Berlin. C ££> ruCkt IN 1> eu Reichsdruckerei