DE1548100A1 - Circuit arrangement for a timing machine using the means of pulse technology - Google Patents

Description

Patent attorneys DR. RUDOLF BAUER ® pforzheim, February 16, 1966 I / W

Secular 31 at Leopoldplatz * Dipl .- (ng. F.rnipreciier 24290

HELMUTHUBBUCH 1548100

Portescap, Ie Port Echappement Universal S.A. La Chaux άβ Fonds.

"Circuit arrangement" for one with the "means of pulse technology working timing machine ".

The invention relates to a circuit arrangement for a Timing machine working with the püttein of the impulse technology.

With such tent scales the balance oscillations of the clock are converted into impulses and their position is used to measure the accuracy within successive, equal time spans Constant frequency oscillator originate. The oscillator is usually a quartz oscillator. They known time scales contain Welter an electronic! Gate, the beginning of each measurement λ used time loading the connection between the pulse shaper and the time scale manufactures and this compound at the end of the time period again separates * The respective position of the originating from the disturbance vibration pulse within the time span can be made visually visible via a digital code in the tent scale. (Note P 31 3 * 2 IX083O.)

Door a reliable working of such and similar timing machine *! is to decide ^ / that the pulse shaper has one and only one pulse

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emits for each amplitude of the balance oscillation. The noise the unrest is now picked up by a microphone that converts acoustic vibrations into electrical ones. If the microphone picks up noises that do not originate from the balance oscillation, these are also converted into electrical oscillations and im Pulse shaper converted into pulses. Such parasitic impulses, which originate from background noise, of course significantly falsify the information on the timing machine.

With the circuit arrangement of the invention, the influence of parasitic pulses on the information on the timing machine is eliminated.

For this purpose, according to the invention, there is a device between the electronic gate and the timing machine which allows the impulses coming from the pulse shaper to pass through to the timing machine only within the shortest possible period of time depending on the frequency of the balance oscillations. If T _{Q is} the time span that elapses between two successive impulses originating from the balance oscillation of a precisely moving clock, and DT _{Q is} the time by which the specified time span is lengthened or shortened for the clock before or after, then 2DT _Q is at the circuit arrangement of the invention used the shortest possible opening time of the access to the timing machine.

In a watch, for example, 18,000 balance oscillations per Hour makes, if it goes exactly, is dl · time span T between two consecutive pulses. 200 msec. The clock goes pro

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lay 10 minutes before or after so i ^ sch changes. T by DT «- 1.4 msec. 2 DQ? ₀ would be 2.8 msec.

For a watch with more than 18,000 balance oscillations per hour 2DT is shorter, with a watch ait less than 18,000 balance oscillations per hour longer 2.8 msec. The drawing shows, for example, two embodiments of a circuit arrangement in FIG Invention in:

1 shows a known circuit arrangement for checking the accuracy of a clock,

2 shows a circuit arrangement of the invention,

Pig.3 a section from another circuit arrangement of the Invention,

4 shows another section from the circuit arrangement according to Fig. 3 and in

5 that belonging to the embodiment according to FIGS. 3 and 4 Impulse scheme.

The conventional circuit arrangement shown in Fig. 1 consists of a microphone M, a pulse shaper 2, the time interval counter 3 ″ a calibrated oscillator of constant frequency 5 and the electronic gate circuit 6. This circuit arrangement is supplemented according to FIG. 2 according to the invention by an electronic one Lock counter 7, which is controlled by a crystal oscillator 8 (which can be identical to the calibration oscillator 5). Vi * explained below, this circuit arrangement is used for suppression

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the parasitic impulses caused by background noise. At the beginning of the measurement, the switch C _{1 is set} to position I so that the "AND" circuit E _{Q is} open. The first pulse Iu ^. Comes from the rom pulse shaper 2 and comes from a balance oscillation, can then be the flip-flop B _Q , which is brought into position "1". Position B marked with "1" is given by the fact that the voltage at the output of B becomes negative. This opens the logic circuit E ^ © Langen then enter the control counter 7t, which can be a binary payer, for example, and are counted.

After the tent interval T - DT has elapsed, the control counter gives 7

ο ο ** ^

the pulse N> j from, this tilts the flip-flop B ^ into position "1". The position marked "1" is given by the fact that the voltage at the output of B ^ becomes negative. ^{This opens} the logical lf and ⁿ circuit Ej ₁ .

After the time interval T _Q + DX _Q has elapsed, the control counter 7 emits a pulse N ₂ which tilts the flip-Tlop B ^ back into the "O" position, ie the voltage at the output of B ^ becomes 0 again and the logic ^M And "-Circuit Ej ₁ is blocked again.

If the second pulse Iu ₂ emitted by pulse shaper 2 changes into that of T _Q - D3? _o and (D ₀ + DT ₀ limited time interval falls, it can run through the logic "And" circuit E ^ and reach the timing machine. At the same time, the pulse triggers Iu ₂ at the output of the monoflop HST _Q , which with a short pulse the control counter

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7 is not set to "O", but continues to count and admits

a point in time which is somewhat after the point in time T _Q + DT ₀ is a pulse Kg. This triggers a circuit 11 which initiates the repetition of the measurement.

In this way, the noise that the microphone M picks up and which, if ee is strong enough, causes interference pulses to occur at the output of the pulse shaper 2, will not falsify the measurement as long as the parasitic pulses lie _{outside the time interval 2 DT Q.}

The time interval in which the measurement can be disturbed by interference pulses * is therefore limited to the time 2DT _Q. This tenting interval will therefore be chosen as short as possible, e.g. for a watch with 18,000 balance movements per hour it will practically be chosen to be 20 msec (theoretically 2.8 msec.)

Figures 3 to 5 show a circuit arrangement with which an automatic adaptation to various restless frequencies of, for example, 2.5; 2.75 and 3 Hertz succeed, the balance oscillation numbers of 18,000, 19800 and 21,000 per hour correspond. The corresponding time intervals are marked with T ₁ ; T ₂ ; and T, denotes the pulse wander regions corresponding to 2 DT ₁ ; 2 2 DT ₃ .

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At 21,600 balance wheel movements per hour, T, * is 166.7 msec. 2 DT * ^m 13 msec. The range in which emerging impulses are passed on to the timing machine extends from 160 msec to 173 msec. The corresponding figures for 19,800 balance wheel deflections per hour are: T ₂ "181.8 msec. 2 DTp * 17 msec; the range extends between 173 and 190 msec. The corresponding figures for 18,000 balance wheel deflections per hour are: T ₁ - 200 msec. 2 ST ₁ > 20 msec, and the range extends

P is between 190 and 210 msec. In Pig. 3 triggers the first pulse Iu ,. the tax counter 7 off. _{It emits a pulse H 1} at time T, - ST, in the example at 160 msec. Ser pulse N ^ toggles the flip-flop B ₁ In ^ the "1" position. This makes the logic "And" circuit E ₁ permeable. At the point in time T, + DT, in the example after a lapse of 173 msec., The taxpayer 7 emits a second pulse K ₂ . This flips the rip-flop B ₁ into the ⁿ 0 ⁿ position. The voltage at the output of B ₁ is then 0, the "tJhd" circuit

fc S ₁ is blocked again.

If the second pulse Iu ₂ at the output of the pulse shaper 2 _{falls within the time interval T 3} + DT ₅ , in the above example at the earliest at 160 msec, and at the latest at 173 msec, after the first pulse Iu ₁ , then it can " Run ^{through Uhd n} circuit E ₁ and toggle flip-flop B ₁₀ to di · "1" position. Di · "1" marking means negative voltage at output of B _10. This causes logic circuit E21 600 (Fig. 4) dl · «wipe the electronic gate circuit 6 and the timing machine is open.

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After a certain number of times of unrest, in the example 36 (at 21,600 per hour), the gate 6 closes again

If, on the other hand, the second pulse Iu ₂ does not occur within the period of time from T, - DT, on one side and T, + DT,

is limited on the other side, the flip-flop B ^ flips through the pulse IT ₂ into the "O" position, whereby the flip-flop B ₂ flips into the "1" position «

The logic circuit E ₂ is open during the time interval limited by T ₂ - DT ₂ and T ₂ + DT ₂ , in the example for 17 msec, from 173 msec to 190 msec. If the pulse Iu ₂ occurs within this time, it runs through the logic circuit E ₂ and flips the flip-flop B ₂₀ into the "1" position. This opens the logic circuit E 19800 (FIG. 4) for a certain Apgphi balance deflection, in example 33. If, on the other hand, the second pulse Iu ₂ does not occur in the time interval between T ₂ - DT ₂ and T ₂ + DT ₂ , the control counter 7 emits _{a pulse H, at time T 2} + DT ₂ , which the flip-flop B ₂ tilts back into its "0" position, whereby the flip-flop B ₇ in its

1 "position is tilted.

The logic circuit E, is open in the time interval that is limited by T- - DT ₄ . and T _x . + DT-, in the example from 190 and 210 msec, after the occurrence of Iu ^. After the tent T> j + DT ^, ie after the time interval has elapsed, the Bt gives your counter

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A pulse N ^ ab, the flip-flop B _x flips back into the * 0 "-8t« llung. If the «far • pulse Iu _{2 occurs} in the time interval between T ^ - DT ₁ and T ₁ + DT ^ then Iu ₂ can run through logical circuit E, and flip-flop B ^ ₀ toggle to the "1" position for 6 and timing machine open. The gate remains open for a predetermined number of movements of the balance wheel, in the example 30, and then closes again.

If, on the other hand, the wide pulse Iu ₂ does not occur in any of the three time intervals, because the first pulse Iu ^ does not come from a balance swing, but was a StSr pulse, the taxpayer 7 sends at a point in time that is shortly after the point in time T ₁ + , miso, after the linde of the longest possible time interval, a reset pulse H _fi that brings the entire circuit into the starting position. (O-state)

If one of the three flip-flop stages B ₁₀ , B ₂₀ , Bx _{0 was} toggled by the second pulse Iu ₂ (ie it assumes the "1" position) because Iu _{2 appeared} in one of the three time intervals, an input of the logic is received "0 & mr 1" circuit negative · voltage · Di ··· negative · voltage, di · then occurs at the output of the "0 of the 1" circuit, is fed to a starting stage S (reversing stage). Aa output of the inverter ff becomes dl · voltage then - 0. This blocks the logic "And * -S *" positions E ₁ , B ₂ and S _2. j

Vlnn «in the three flip-71op stages B ₁₀ , B ₂₀ , Bx ₀ in the" 1 "position

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has been tilted, the associated logic circuit 10 *? O 'or E ^ «is open *

The second pulse Iu _{2 also} triggers the monoflop HST, which resets the taxpayer 7 to 0 with a short pulse. For the following explanations it is assumed that the second pulse Iu ₂ sets the flip-flop B ₂₀ to the "1" position has tilted and has thereby prepared the measuring arrangement for a balance with 19,800 strokes per hour. Since B _{20 is} in the "1" position, the "And ^M" circuit E _{20 is} open. After each pulse Iu ^ of the pulse shaper 2, the control counter 7 emits a pulse N ₂ after the period T, + DT has elapsed, which tilts the flip-flop into the "1" position. After the time period T ₂ + DT ₂ has elapsed, the control counter 7 emits a pulse N, in the example 190 mesec. after the occurrence of Iu _1. The pulse N, flips that flip-flop B _{2 back} to the "O ^n" position. The output of the flip-flop B ₂ is connected to the "AND" circuit E ₃₀ , which is opened by the "1" marking of B _20. The "and" circuits E ₁₀ , E ₂₀ and Ex ₀ lead to the logical "Or 2" circuit, which is at the input of the Schmidt trigger S. The voltage at the input of the Schmidt trigger is between T ₂ - DT ₂ to T ₂ + DT ₂ in the example for the time of 173 up to 190 msec, negative. During the same time, the output of the Schmidt trigger also becomes negative and opens the "and" circuit S ^. If the pulse Iu,,. following _{the pulse Iu 1,.} ie between T ₂ - DT ₂ to T ₂ + DT ₂ (173 to 190 msec.)

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occurs, it can ^{run through the "and n"} circuit and reach the timing machine. The pulse at the output of K triggers the monoflop MF, which emits a reset pulse that sets the control counter 7 to 0 and the flip-flop B ₂₀ in the O-position tilts.

If the pulse 1 ^ ₊₁ does not fall within the time interval between T ₂ - p and T ₂ + DT ₂ (173 to 190 msec), it cannot run through the "and" circuit Em. This is blocked because the output of the Schmidt trigger has 0 voltage. The impulse cannot reach the timing machine and also cannot trigger the monoflop HF. The taxpayer 7 continues to count up to time T ^ + DT ^ and shortly thereafter sends the reset pulse Bg, which brings the entire Hess arrangement into the starting position, eodaes the automatic Hess preparation, as described, can begin.

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Wwtlldi · 31 at Uopoldplatz Fanupradwr 24290

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Claims t

1.) Circuit arrangement for a tent scale working with the means of pulse technology with a pulse shaper that generates current pulses from the noise of the unrest vibrations of the ear held in front of a microphone and outputs them to a pulse interval counter that determines the length of the intervals by the number of times during an interval of a calibration oscillator with constant Trequens measures emitted vibrations and with an electronic {circuit that opens the access to the timing machine door the impulses at the beginning of the interval and closes at the end of the interval, characterized by means of exclusion of the acoustically recorded by the microphone next to the Oerüsueh of the balance oscillations and in Impulses transformed background noises before being passed on to the timing machine

2.) Circuit arrangement according to claim 1, characterized by

a tax payer (7) who counts the oscillations of a calibration oscillator (8) and a pulse from the pulse shaper (2) graining only passes on to the tent scale if he is in a dmrch die Vibration number of the Eichoacillatora (8) measured lateral spans occurs which has the highest error range. corresponds to a clock that is ahead or behind

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Claims (1)

3.) Circuit arrangement according to claim Λ or 2 characterized by a logic circuit between the gate (6) and timing machine, which allows an adjustment of the period of time given by the number of oscillations of the calibration oscillator (6) during which the pulses can reach the timing machine. 909821/071 1