DE726457C - Device for the transmission of counter status on demand - Google Patents

Description

Device for the transmission of meter readings on demand It is known the numbers of a measured value individually by a corresponding number of pulses to transmit remotely. So it has been suggested to use a contact on the counter Counter a rotary selector (one), which has ten contacts, set over this and the mentioned contact a second each time a cycle is completed Rotary selector (tens) to advance, in the same way a third (hundreds) etc. The position of the contact arms of the rotary selector then gives the decimal number to be transmitted again. On request, a viewfinder scans the position of the contact arms one after the other individual rotary selector and sends a corresponding number of pulses into the long-distance line, at the end of which a suitable receiver is set by the pulses will, e.g. B. also rotary selector whose contact arms are in the same position as the the rotary selector on the side of the door and consequently display the same decimal number. Instead of driving a rotary selector, the counter can be used also move directly a contact arm that strokes over contacts, similar to the one Contact arm at the first rotary selector. Does the meter have the usual number rolls? whole counter, it is only necessary to have one in place of each individual number roll To have the contact arm swipe over ten contacts in order to achieve an equally effective, but to get a simpler and immediately searchable arrangement as above with the rotary dials.

The facilities described are known.

If now with such a device a labor value, z. B. the The currently displayed number of kilowatt hours of a meter in operation is transmitted remotely with the help of just one viewfinder, one after the other, the positions of the scans different contact arms, significant errors can occur in the scan subvert, if not the counter device for the duration of the Scanning is stopped. Because while, for example, the ones and tens are being scanned are, the meter contact mentioned at the beginning may work randomly and all contact arms Advance by one stepi @ Then the number transferred is in dek hundreds are correct, but be completely wrong in the tens and ones. But if you wanted to to avoid such incorrect transmissions, to stop the counter for the duration of the scan, the transfer would be done correctly, but the work would be for that duration apparently not measured by the meter. The counter would therefore show shortfalls over time exhibit. The invention aims to overcome this difficulty. For this purpose, between the viewfinder and one of the number display devices described an intermediate rotary selector with a special task switched. The intermediate rotary selector constantly seeks the position of the counter, so hurries after it. This chasing but is, while the counter advances unhindered, in the time of the reading transfer blocked. The last position of the intermediate rotary selector is transmitted remotely each time. This principle of storage, lagging and blocking becomes indispensable of lagging during the transmission of measured values if several number gears are on the same Counters are available and can be transmitted remotely.

As is known, such a counter works in such a way that the counter motor only moves the first number wheel (single number wheel). This switches the second number wheel (tens number wheel) forward by one step after each revolution. The third number wheel (hundreds) is moved by one step when the second number wheel has just completed a full turn or its "number sequence begins again to tilt, etc. Here each individual number wheel is now designed as a contact ring and each contact ring has its own memory ( S, to S3). According to the invention, all memories receive a common searcher. When called up (Fig. I), a control switch (Q, O, to Q;) is activated (- [-, f, Q1, D, U, -). By energizing the relay G (-E-, Q5, G, -) it cancels the connection of the memory with the individual contact rings of the meter (g-contacts before S ,, S "S3). The memories remain in the last position and are now scanned one after the other and transmitted remotely. In the second position of the control switch, the viewfinder D starts up (- [-, p, T, 03, D, U, -) until the viewfinder arm D has found the position of the first memory S i-. Relay P then responds (+, Si, Dl, Q2, P, g, -), stops viewfinder D by opening contact p and causes the control switch to move from the second to the third position by closing contact p ( +, p ,, Q1, D, LT, -). This moves the viewfinder to the basic position (-; - 1. Q4, D =, D, U, -). During this, the delay relay X responds and then drops out, whereby the control switch changes from the third to the fourth to the fifth position (+, x, Q ', Q, L', -). Everything is now ready for i-scanning (-; -, p, T, 03, D, f ', -) and checking (+ S2, D3, Q =, P, g, -) of the second memory. The same game is repeated for all subsequent stores. "Intermediate jedesmaligem scanning the control switch ensures that the searcher is always returned to its initial position (- (-, X, 04, D = D, if F is de-energized at the end of the LTbertragung, the control switch is due to closing of the contact f, .. to its basic position g This relay @vird electrolessly and unblocked the link between the meter and the memory, the individual memory hasten the now-advanced contact arms at the counter (- [-, g, 1a ,, S ,, U, -: -t-, g, 1c., S; ,, L ', ° -; -1 -, g, 123, S3, L', -) until the counter positions are found and the H relays respond and the Shut down storage rotary magnets S.

According to the invention, the construction and circuit are further simplified. According to Fig. 2, the meter has only one contact ring with only one contact arm 1i, which are connected to a memory S in the manner described above. This Memory in turn controls a second memory, so that the second Store at one step forward each time the first store completes one cycle (-t-, S, .52, -). The second memory is the same effective on a third (+, S @, S3, -) etc. The positions of the individual memories are also scanned one after the other in the manner indicated.

When called up, relay I 'is energized, which activates the control switch by closing its contact f (-E-, f @, (Y , Q, U, -). Relay G is energized, which connects the counter and memory during the entire scan blocked 1a, S, U, -). In the second position of the control switch, the viewfinder D receives current (-f-, C) 4, T, p, D, U, -). First he stabs the hundreds memory (-E-, 03, S!;, Dl, P.

Relay P stops seeker D as soon as it has reached the position of the hundred memory, and lets the control switch pass from the second to the third position (+, p, QI, Q, U, -). Here the viewfinder runs home (+, Q4, X, D2, D, U, -). Relay X responds during this and then drops out, whereby the control switch changes from the third to the fourth to the fifth position in the manner described above (+., X, Q1, Q, U, -). Everything about scanning the second memory (tens) is eloquent here. the game described is repeated and then also for Si, the ones memory. At the end of the transfer, the control switch has reached the last position, which it leaves when the polling relay F is de-energized (+, f, Q1, Q, U, -).

A single common rotary magnet .S (Fig. 3) can also be used on the dispensing station instead of all the individual storage units. The contact rings and contact arms of all stores sit together on the axis of this rotary magnet, which is indicated by the upper dotted line in Fig. 3. But only the first contact arm is directly operated by the axis of the rotary magnet in such a way that it advances by one step when the rotary magnet S 'is advanced by one step. The second contact arm IL 2 sits loosely on the axis of the rotary magnet S and is made dependent on the first contact arm K1 in the manner of a counter mechanism, so that the second contact arm advances one step each time the first contact arm just completes one revolution. In the same way, the third contact arm is made dependent on the second, etc. Here, too, when the control switch is called up from the basic position , it goes to the second position f, Q1, Q, U, -), relay G responds (- @ -, Q2, G , -) and also removes the connection between counter and memory during the entire scanning process (+, g, h, S, U, -). In the second position, the viewfinder D starts, the position of the last contact arm K3 is scanned (+, Q3, K3, Dl, P, g, - and +, Q4, T, p, D, U, -). The viewfinder is shut down when P responds, the control switch is moved from the second to the third position (-; -, p, Q1, Q, U, -). Now the viewfinder goes into the basic position (-E-., Q4, X, D '=, D, U, -). The delay relay X responds during this and then drops out, whereby the control switch changes from the third to the fourth to the fifth position (+, x, Q1, Q, U, -). The contact arm K2 and later the contact arm KI are scanned in the same way. If the polling relay is de-energized at the end of the transfer, the control switch also goes to its basic position (+, f, Q1, Q, U, -), G is de-energized, and the memory block is consequently lifted; the memory therefore lags behind the counter (-1-, g, h., S, U, -) until it has found the position of the counter, which has changed in the meantime. Here, too, the connection between the counter and the memory is blocked during the scan.

In the method described, it is important, in order to avoid incorrect measurements, that the contact arm K on the meter never completes a full revolution during the duration of a scan. This is achieved by a corresponding translation between the counter motor and the associated contact arm K. It may be useful to connect the contact balin K of the counter z. B. to equip with 50 contacts, but to let the storage contact, tracks KI, K =, K3 work according to the Dekadensvstem. Then (Fig. 4) the contact track Si must of course have as many contacts as that of the meter, because both tracks must be unambiguously connected to one another. The contact paths S;, S2, S3, however, are divided up according to the decade system and switched multiple times. Also, the contact arm K, the next, 1 (2, does not have to move one step forward each time it is fully circulated, but rather at the end of each decade group If the same rules are observed, other contact rings in the memory can also have a multiple of io of contacts, as is indicated again in the case of the last contact ring K3 in Fig. 4. It is more practical, however, that these contact rings all have only ten contacts These circuits and constructions are possible because only the first contact arm K1 is directly dependent on the rotary magnet S1 with its given step size except for S; the second contact arm 112 is not dependent on the rotary magnet S'1, but on the contact arm KI by means of the mechanical coupling indicated in Art of a counter gear is moved forward and here the step size can naturally be quite different The same consideration applies to all of the following contact arms K =, K3 ... Fig. d. is of course to be supplemented by the remaining parts of Fig. 3.

Claims (1)

PATEIX TAX SP RÜCiiE: i. Device for the transmission of meter readings on demand, where a measured value is passed through several series of numbers and accordingly is defined by the position of several contact arms, wherein. by means of a viewfinder transmit the position of the contact arms one after the other becomes, thereby characterized in that between the viewfinder (D) and the contact arms (Ii) intermediate rotary selector (S) are switched, which constantly and automatically lag behind the position of the contact arms, however, stopped and scanned by the viewfinder during the retrieval. Facility according to claim i, wherein the request does not take place all of the time of a full cycle of the first to be scanned voter claimed, characterized in that only the first The intermediate rotary selector is controlled directly by the counter, but the others are controlled by the first Intermediate rotary selector can be controlled by using a Intermediate rotary selector directly the rotary magnet of the following intermediate rotary selector is advanced. 3. Device according to claim i, characterized in that only the first intermediate rotary selector is directly controlled by the counter, the others but can be controlled by the first intermediate rotary selector by like a counter gear the second intermediate rotary selector is moved by one step when the first is Has just passed the web once, the third is moved by one step when the second has just swept over his path, and so on. Device according to claim i to 3, characterized in that the contact track of the counter has as many contacts and the counter motor receives such a translation that for the duration of one Remote transmission never completely swept over the contact path of the meter by its contact arm will. 5. Device according to claim i to q, characterized in that the to be scanned Contact paths of the intermediate rotary selectors are divided according to the decade system, the Contact track on the counter but more than ten contacts, especially whole multiples out of ten, receives.