DE1922114A1 - Device for summarizing charge impulses - Google Patents

Description

Device for combining charge pulses The invention relates to a device for summarizing the incoming charge impulses from several connection lines on a charge meter, especially in Rethen systems.

In the case of series systems, charge display devices are required; they can be varied according to the needs of the particular user. is for example a division of the working units to the individual row positions is desired, so there is a charge for each attainable exchange line of the relevant row location necessary. That means for a fully developed row system with 4 trunk lines and 11 sets of 44 billing meters. For the allocation of the fees to the individual Line positions, it is usually unimportant on which trunk the charges are incurred are.

@s is known from the interconnection of the individual counting lines in a key telephone to forward the charge impulses to a charge meter for each apparatus. This procedure only shows the correct number of charge units while the key telephone in question only speaks on one exchange line, or the charge impulses do not arrive at the same time.

E'for the display of the charge units are in private branch exchanges mainly used billing meters whose number drums are operated by electromagnetic actuated ratchet shifted further will. The billing meters need about 100 - 1) 0 ms to process a pulse. At shorter intervals or at the same time, incoming impulses on a charge counter are never 1 impulse rated and displayed.

The finding is based on the task, on the same side on different Lines incoming charge impulses, provided these lines are from a key telephone occupies sini to forward to a single billing meter assigned to this key telephone. @If the lines are occupied by different devices, the charge impulses arrive to the counters associated with them.

This object is achieved according to the invention in that each connection line a storage arrangement is provided which initially stores those incoming charges records as well as saves and one after the other to the fee counter of those row positions passes on, from which the connection line is occupied with a charge.

With regard to the billing meter, they must therefore arrive at the same time debit impulses are given one after the other on the charge meter. To this end a; peicner is required for every Ieitun @, the first the charge impulse saves. Known bistable multivibrators can be used as memories as only 1 pulse has to be saved at a time.

Downstream of the memory is a pulse shaper, which generates the from the memory brings the output pulse to a usable length for the billing meter. Therefor an already known circuit of a monostable multivibrator can be used werlen.

The withdrawal can also take place cyclically.

Embodiments are shown in Figs. 1 to 5 and will be described in more detail below.

They show: Fig. 1 and Fig. 2 overview block diagrams, Dept. 3 a detailed circuit diagram.

@in Fig, 1 incoming charge pulse on a counting line Zi initially stored in a memory Sp.

In the AS wire storage device, the release voltage request at the same time switched off, controlled to store the assigned memory @p 1, 2 or 3 through the lines a.

After the storage process is finished, the release voltage builds up flat of a time function again; The trigger voltage reaches for the various Memory stores its trigger value one after the other over the section b. This achieves d @ ß cannot store several memories SP at the same time. Before the release voltage for the next storage tank Jp has reached its trigger value, the line c the trigger voltage due to the pulse applied to the charge meter for all Memory op short-circuited.

After the impulse has subsided, the release voltage rises again sn.

In another method according to Fig. 2, an arrangement of astable multivibrators @v a trigger pulse in succession at a distance of approx. 150 me given to the memory Lp.

The @ cycle is so fast that until the next charge pulse arrives This can be saved again on a specific line.

On the basis of the circuit diagram according to Fig. 3, the invention is described in detail described.

The charge impulses, which are transmitted via a connecting line in the form of alternating current impulses arrive, are converted into direct current pulses in a toll switch, The Impulses can be of different lengths, depending on local authority facilities. For the purpose of electrical isolation and to connect more than just one charge meter are at the entrance Zl a Relay Z1 and a relay at the output Z2 provided. A charge pulse initially excites input relay Z1. The contact Z1 connects via the Niderstend R9 and the rectifier G3 to the base of the transistor T2 ê a bistable multivibrator applies voltage and thereby brings the stage into storage position.

At the same time, the voltage applied to the capacitor @ 7 is used as the trigger voltage acting voltage through the transistor T3 and short-circuited through the resistor R20. After the storage process has ended, the capacitor C7 builds up according to the time constant R21.C7 the release voltage again, provided that the Pransisior T6 over the Resistance ttf B offered voltage is not short-circuited. After reaching If the value is correct, the multivibrator tilts back to its starting position. EXierbei occurs at the collector of transistor T2 a voltage increase, which in the example as @lusimpuls via capacitor C4 and rectifier G4 to the pulse shaper stage If is forwarded. The pulse shaper stage If consists of a monostable multivibrator. In the idle state, the transistor T5 is conductive. When a defined impulse arrives the transistor T4 is activated and brings the relay Z2 to pull in. The control time is mainly dependent on the time constants of this grade If formed from the capacitor C5 and the resistor R16. The control time must be so large that the charge counters used can respond reliably Gz. Jer Contact z2 now applies voltage to the series system via the resistor h23 further counting line.

by a pending pulse on a continuing counting line If the transistor T6 is turned on and closes the release voltage for all Memory Sp short. the release voltage reaches after the impulse has died down for the individual memory Sp one after the other @ their trigger value. The memory Sp with the smallest Time constants are the first to start saving, provided that there is a Impulse is stored.

The device has depending on the above circuit management an entrance and an exit. jie is looped into the counting lines if necessary and is only required once for the series system. The description relates only! on the components used in the example. For the memory elements you can also magnetic core memory us. can be used, but other storage devices can be used require.

The advantage of the invention is that for each row point, whose fee revenue is to be determined, only a total of @ mt 1 fee meter is required for all trunk lines. The savings can be made with a fully equipped Series system with 4 trunk lines and 10 deihenstellen 33 meter counters. In addition to technical advantages, there are also considerable economic advantages. to This is not only due to the fact that the cost of the call counters is much lower, but also the significant gain in space in the individual devices. For line telephones, in which the meter cannot be installed anyway, you come with it for all series system types with only 1 type of meter box.

Claims (3)

l patent entitlements: 1. Device for summarizing the incoming green pulses of several connection lines on one burner counter, especially in the case of pure systems, i a i a r c h e k e n n n z e i c h n e t that in that connection a memory arrangement it is provided that ieien incoming charge pulse initially receives and stores and one after the other passes it on to the toll meter at the row location from which the connection line is used for outgoing charges. 2. Device according to claim 1, d a 1 u r c h g e k e n n -z e i c h n e t that the withdrawal of the willingness to accept the fee payer is dependent. 3. Device according to claim 1 and 2, d a i u r c h g e -k e n It is not indicated that the withdrawal is carried out cyclically.