DE3015234C2 - Method of transmitting a signal - Google Patents

Description

possible signals, i.e. Ä or Q available by taking advantage of · this-. Conversion as close as possible to the original ::

j§ it either closes the switch or c. Between;

S- '. in a memory 4 the occurrence of the signal B and see the individual conversion devices (ana-

'' §1 current status of a log digital converter serving as a time counter), considerable ectfer- -

fJI microsecond counter 5 held. It is assumed that there are 5 results, which are expediently

fl that another signal C is currently being transmitted and the transmission channels used are bridged,

p thus the transmission path for the signal B bleating, but with waiting times unknown in advance

i; kiert After some time, the transmission link is free. On the other hand, it is extremely important to d? Ö

P for the transmission of the signal B. The control unit 3 to combine the scanning edges for all

Lä causes the switch c open and the switch b io to be synchronized as closely as possible with the variables, since an-

i closed and thus the signal B is transmitted. otherwise the linking device phase shift

i'i In addition, the difference between the exercises now being simulated and the results being erroneous

'-.' reached level of the microsecond counter 5 and are afflicted.

• The status entered in memory 4 is formed. For this purpose, the scanning edges can be used as Si

λ, the level reached in the microsecond counter 5 is viewed as 15 signal B and transmitted as described above

p. Information y with a negative sign, and the im will.

{; - Memory 4 registered status as information χ a case of the in F i g. 2 has a device shown

vi Adding element 9 supplied by means of a fixed value transmitter 6 processing device 1 the task in known

§ is still a fixed value z in the adder 9, which way from the instantaneous values of the current / and

M. a total of 20 occurring in the transmission system of the voltage u the instantaneous power and through

H corresponds to the fixed term entered. The addition of this to determine the supplied energy

If member 9 is the time sum formed gives the age of signal B teln. As sampling times, it sends in regular

p the time of arrival in a V _r irarbeitungs- intervals pulses B _x, B _2, B ₃ from. These reach us

|| device 1, e.g. B. a computer. This number can delay an analog to digital converter 12, which the

'■ ß can be used to convert the signal B into a sequence of digital "

ft correct with respect to a signal A, which is also used in the values ui, u2, u3 ... On the other hand, may the

f. | Processing facility is included. Dem Erfüasungseinrichtung 11, which the acquisition of the

Il correspondingly also in the computer 1 a microscope stream is only used via a transmission channel 12, Il customer counter is provided, which is also used to transmit other information at the same rate.

fl quenz how the microsecond counter 5 is controlled. 30 must and who is therefore not able to

Vl According to the problem, it is not necessary to have pulses Bu B ₂ , B ₃ without delay or with

ΊΙ Hch, that the microsecond counter 5 and the microsecond. to transfer known and verifiable delay,

'■ ä customer counter of the computer or other existing ones must be accessible. Transmission channel 2 corresponds to in

f | Microsecond counters are synchronized. its mode of action that described in FIG

|; It should also be mentioned that in the case of the indicated transmission channel 2. The pulses B 1, B ₂ , B ₃ come m

Jf tragungsweg 7 a transmitter, with 8 a receiver and with the detection device 11 with a known delay

§ 10 a long-distance pipeline with a constant running time. The detection device 11 contains an

|| tion is called. next free-running pulse generator for the sampling time

jf; In the event that several transmission channels 2 in points of the current L it also contains a mini

% Cascade connection to a processing device 40 microsecond counter, which is

l | 1 act, is in the second and following transfer and when a delayed pulse Bi,

Sf supply channels 2 for recording the age of the event between two ', B _{3 is} queried. From the comparison of the difference _;

j? i see each counter 5 and the memory 4 still one of the two queries with the event age of the impulses Bi,

\ c Subtracter 11 indicated by dashed lines is provided, B ₂ , Uj 'can be recognized in detection device 11.

■■ the running time accumulated so far in the 45 transmissions, whether the pulse sequence Bi, B ₂ , B ₃ corresponds to the

t; transmission channels 2 takes into account the sampling device 11 generated sampling time points.

% The arrangement according to FIG. 1 can also lag or lag and by how many microseconds. That

The remote synchronization of two or more clocks with a comparison result is carried out in the acquisition device 11

V waiting time not known in advance are used to operate the free-running pulse generator

; ' the. The signal B to be transmitted would then be that of 50 accelerate or delay until the sampling times

"; to view the time displayed on a leading clock. Which coincide in time with the pulses B \, B ₂ , B ₃ .

■: \ Fixed and variable transmission channel resulting from this ensures that the digital values / 1, / 2, / 3

" Delays are referred to as "time differences" over time ... originate from the same points in time as the oigita-

transmit yourself. The second clock to be synchronized Ien values u 1, t / 2, u3 ... and the power determination

;. ': can now take place according to the comparison between own 55 without phase errors

fJ time and the reported time plus the time difference A special application for the arrangement according to

W. before or after. F i g. 2 results when:! He recording device

A] If analog process variables by means of a digital ar- 11 not exclusively the acquisition of values for the J embedding linking device continuously serves further processing device 1 but.-; au-

% are to be linked, their previous conversion in 60 must also be independently linked to other links.

; ';_;'requires a sequence of digitally represented values and there is also the requirement that at

borrowed. These values must match the instantaneous values of the failure of transmission channel 2 or the link

analog process variables at very specific time points in the detection device 11

ten correspond. At these times, the links that have been made continue to run independently.

rising or falling edge of the sampling cycle. You 65 In this case it is a good idea to have the

must provide the facilities responsible for converting the failure of dti processing facility 1 or des

analog process biggest in digital values get, to- Transmission channel 2 the clock of the acquisition

be guided. In more extensive systems it is not abrupt from device 11, but slowly

ensure that its clock frequency at no time exceeds or exceeds the limits permissible for a sufficiently error-free link in the detection device 11 falls below

The digital values themselves obtained at any sampling times can also be viewed as events will. The clock generators of the individual analog-to-digital converters can then run asynchronously to one another. the The digital values are transmitted to the linkage device, provided that there are only channels with waiting times are available, via a transmission channel 2. Due to the transmitted digital value age, the digital values in the logic device I be classified with each other at the correct time. Further processing takes place in a polarizing manner.

For this purpose I sheet drawings

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Claims (2)

Patent claims: 1. A method for transmitting a signal from a detection device to a processing device via a transmission channel that is only available at unpredictable times wherein the signal upon arrival in the detection device is the transmission of a time counter reading triggers in a memory provided there and also a time during the signal transmission the arrival of the signal corresponding size is transmitted, with the help of which in the processing device the actual time of arrival of the signal in the detection device is calculated is characterized by - that the time counter reading (x) is derived from a continuously running counter (5) provided in the recording device, - That at the beginning of the signal transmission from the current counter reading (y) and the memory content (xl) the time difference between arrival and transmission of the signal is determined and transmitted with the signal - and in that the depth in the processing means signal after subtraction of the time difference value is inserted from the controlled by the f calibrate clock frequency as the time counter (5) of the detection device time counter in the processing means predetermined time in the time frame of the processing device! 2. The method according to claim _r, characterized in that in the case of intermediate storage on the transmission path, the time difference that has accrued in each case is added to the time difference that occurs during the intermediate storage. 40 The invention relates to a method for transmitting a signal from a detection device to a Processing device via a transmission channel that is only available at unforeseeable times stands, the signal when it arrives at the detection device, the transmission of a time counter reading triggers in a memory provided there and also a den during signal transmission Time of arrival of the signal corresponding size is transmitted, with the help of which in the processing device the actual initiation time of the signal is calculated in the detection device. Such a method is for synchronous telecommunications, in particular telex communication systems from the DE-AS 22 98 715 known, in which all subscriber connections have a counting multiple with a constantly revolving Counters are connected so that the counter reading represents a specific subscriber address, with the counter scans the individual subscriber lines one after the other. With this procedure are for unambiguous assignment of a calling subscriber to a called subscriber also a transfer multiple provided so that no intermediate storage of whole characters but only of intermediate elements is necessary by changing polarity Marked are. The method differs from such a method for synchronous telecommunication switching essential according to the invention that the time-changing with different waiting times signals to be transmitted in their value at the point of measurement of the measurement without synchronization of the individual timers be brought into a correct relation to one another in order to obtain correct measurement results from different signals to obtain. The invention is intended to avoid the disadvantages occurring in the method previously used. Difficulties in temporally linking different signals have always arisen when the existing transmission channels also for the transmission of information other than that mentioned above Signals should be used because the signals with previously not determinable and therefore also non-verifiable delays were transferred. The times at which the signals are sent to the processing device were reported, therefore said nothing about the times when the signals were generated himself off. In such cases, in the places where the Signals arise, a common, i. H. at the same time, and via the delayed transmission not only transmit the event itself, but also the time of its occurrence, including additional Transmission channels for the synchronization of those timers that are located at the places where the signal is generated are, with the at the place of processing located timer, which is now at most constant and thus may contain verifiable delays. The invention now relates to a signal transmission method, with which a timed acquisition of signals in a processing unit is possible, without the timers present in the individual facilities being synchronized to ensure that they are absolutely synchronized Need to become. The task at hand is achieved with such a signal transmission method through the measures according to the characterizing part of claim 1. Any signal transmitted over a transmission channel with unpredictable waiting times is encoded with a time difference corresponding to the waiting and transit times accumulated up to that point fed to the processing device and classified there / when the signal arrives in the processing device, the time is subtracted. This is in the processing device of the piercing point of the signal can be recognized and the signal can be assigned to other signals at the correct time. Advantageous embodiments of the characterizing part of claim 1 are the subject of another Claim. The subject of the application is described below using an exemplary embodiment shown in the drawing explained in more detail. It shows 1 shows a device for transmitting signals in a schematic representation, Fig. 2 shows a device for transmitting power and voltage signals for power measurement. Referring to Fig. 1, the signal fl represents the time of its When a transmission request occurs to the control unit 3. The control unit 3 sets the transmission path 7,8,10 each for the transfer of one of the