SU1499461A1 - Extreme value indicator - Google Patents

Abstract

The invention relates to a pulse technique and can be used to build information processing devices for measuring time intervals between extremes. The purpose of the invention is to increase the reliability of extremum release when the input signal decreases monotonically (increase). The storage by the amplitude detectors 1.4 of the extreme value of the input signal between the extreme points excludes the fixation by the elements 2.5 of the comparison of critical points corresponding to the areas of monotonous decrease and increase of the signal. In addition, the device contains the formers 3, 6 front of the front. 2 Il.

Description

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The invention relates to a pulse technique and can be used in the construction of information processing devices for measuring time intervals between extremes.

The purpose of this invention is to increase the confidence of a monotonous decrease (increase of the input signal).

FIG. Figure 1 shows the flow chart of an extremum timer; in fig. 2 - time diagrams of his work.

The extremum marker contains an amplitude detector 1 of maximum value, a comparison element 2, a leading edge driver 3, an amplitude detector 4 of a minimum value, an additional comparison element 5 and an additional front edge shaper, with the first inputs of a maximum value amplitude detector 1 and a comparison element 2 connected to the input bus 7, the output of the amplitude detector 1 of the maximum value is connected to the second input of the comparison element 2, the output of which through the front-side driver 3 Connected to the first output bus 8, and the first inputs of the amplitude detector 4 minimum value and additional part of the comparison element 5 are connected to the input bus 7, the second input of the amplitude detector 4 minimum value is connected to the first output bus 8, and the output is connected to the second input of additional element 5 the comparison, the output of which through the additional front-edge driver 6 is connected to the second input of the amplitude detector 1 maximum value and the second output bus 9.

The marker works as follows.

When the input voltage changes from minimum to maximum (Fig. 2a), the output voltage of the amplitude detector 1 of the maximum value follows without changes the input voltage

(Fig. 26), since the amplitude detectors are highly sensitive, and the reference element 2 is kept in the zero state (Fig. 2b, the maximum voltage is remembered by the amplitude detector 1 of the maximum value and from this moment remains unchanged at the second input of the element

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2 comparisons. At the first input of the comparison element .2, the voltage decreases and, when the difference between the input voltages reaches the threshold, the comparison element 2 is set to one state (Fig. 2c). On the leading edge, the front-edge driver 3 generates a pulse (Fig. 2d), which arrives at the first ascent of the extremum marker as a positive extremum and simultaneously resets the amplitude detector 4 of the minimum value through the second input (equalizing its output voltage with the input) (Fig. 2e), whereby the comparison element 5 is set to the zero state (Fig. 2e). Starting from this moment, the output voltage of the amplitude detector 4 of the minimum value follows the input, keeping the comparison element 5 in the zero state.

The minimum voltage is memorized — the amplitude detector 4 is the minimum value and, when the difference between the input voltages of the comparison element 5 reaches the threshold, the latter is set to a single state (FIG. 2e), and the positive front of the front-side driver 6 will generate a pulse ( Fig. 2g), arriving at the second output of the extremum marker as a mark of a negative extremum, and at the second input resets the amplitude detector 1 of the maximum value, thereby returning the comparison element 2 to zero condition.

Thus, the storage by amplitude detectors of the extreme value of the signal between the extreme points precludes the comparing by the comparison element of the critical points corresponding to the regions of a monotonous decrease and increase in the signal.

Claims (1)

Invention Formula An extremum marker containing an amplitude maximum value detector, a comparison element and a leading edge driver, first inputs of a maximum value amplitude detector and a comparison element are connected to the input bus, the output of the maximum value amplitude detector is connected to the second input of the comparison element, which through the front edge driver g / e n Editor H, Lazarenko FIG. 2 Compiled by N. Markin Tehred M.Hodanich Order 4705/53 Circulation 884 VNUTI of the State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 Proofreader L. Patay Subscription