SU738136A1 - Device for monitoring timing pulses - Google Patents

Description

(54) DEVICE FOR CONTROL OF CLOCK PULSES

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The invention relates to the field of radio electronics and can be used in control equipment for digital computers, computing devices, devices for transmitting discrete information for 5 monitoring clock pulses.

There are known devices for controlling time pulses that contain the formers of the beginning and end of the measured interval, triggers, a generator of quantized pulses, a counter, elements AND, OR, NOT, a multivibrator 1.

The disadvantage of these devices is the presence in them of complex equipment, such as a quantizing generator, a counter, which significantly increases the cost of control devices.

Of the known devices, the closest to the technical essence is a time tolerance control device comprising a reference pulse trigger, an AND element, the first input of which is connected to the output of the delay line, and an inverter sequentially connected 25, and the second trigger (2.

The disadvantage of the device is its complexity. In addition, it does not allow the dips to be fixed in

binge impulse, which reduces its functional OPPORTUNITIES,

The purpose of the invention. - expanding the functional capabilities of the device.

The goal is achieved by the fact that the OR pulse element, whose first input is connected to the output of the delay line, has an OR element and a mismatch element, whose first input is connected to the output pulse of the reference pulse, the second input is with the input bus of the device, and the output is connected to the second input of the element I, and the input of the delay line is connected to the early start bus, the second input is connected to the front pulse bus of the end pulse control, and the output The terminal is connected to the output bus of the device.

FIG. 1 shows the structural electrical circuit of the device; in fig. 2, 3, 4 are given time diagrams of ml, explaining his work.

The clock pulse control device contains an input signal bus 1, a mismatch element 2 connected to the trigger trigger trigger input 3, a reference pulse bus 4, 5, a forward start beat bus b and a leading pulse end bus 7, a delay line 8 connected to the output element OR 9, element 10, the first input bus 11, VTOR5PO input bus 12 and output bus 13,

The device works as follows.

Tire 4 is triggered by a reference pulse through a clock pulse corresponding to the front 1st pulse of the pulse being monitored, and a clock pulse corresponding to the falling edge of the monitored pulse is fed to the other input of the same trigger on bus 5. In case of a mismatch between the temporal location of the monitored pulse and the reference at the output of the mismatch element 2, a signal appears.

In order to avoid false alarms of the device during transients on the fronts of the monitored and reference pulses, the output of the element Nesuppdeni 2 is connected by bus 12 to the first input of the element Eu, the second input of the bus 11 is fed through the delay line 8 impulses from the element 9 10 during spinning processes when switching the edges of the monitored and reference pulses. For this, the bus 6 to the first M: 62G eLyoT OR 9 is supplied to the clock impulse, which is one step ahead of the controlled and reference pulses, which is delayed by A t (Fig. 2) and / thus, it overlaps the transient zone when switching the leading edges of 3TajiOflfft6 fS H controlled pulses. A pulse is fed to the other input of the element OR 9 via the bus 7, leading the leading edge of the monitored and reference pulses.

With the coincidence of the controlled and reference pulses on the output bus 13 of the device there is no signal

(Fig. 2), in the presence of a dip in the envelope of the monitored pulse (Fig. 3), the output of the mismatch element 2 is a signal that opens And 10, and a mismatch signal appears on the output bus of the device. When the reference pulse overlaps with the reference front and rear edges (Fig. 4), a mismatch signal appears at the output of the mismatch element 2. Thus, in the proposed device, in comparison with the prototype, the device is simplified by introducing mismatch elements and OR instead of a trigger with separate inputs, a second AND element, an NOT element, and the possibility of detecting dips in the pulse envelope expands its functional range.

Claims (2)

1. USSR author's certificate No. 423084, cl. G 04P11 / 08, 1972. V 2. USSR author's certificate 344587, cl. H 03 K 19/20, 1970, i 738136 s i 7 f fi . 1 A 12 ; j 72 17; / 1 r / (put. 2