SU1025012A1 - Device for detecting the first event - Google Patents

Abstract

TOOL FOR DETECTION OF EVENTS PBSETSHE, containing element OR-NOT, group From rt (ft number of events) E To-terriers, -groups az p elements and aikashga in which, single outputs 3 It triggers are connected to the inputs of the same indication element, inputs The epheme OR OR-NOT is connected to the direct outputs of the triggers, so that, in order to increase the reliability of the fixation of the first event, 5 I K "-Inputs 3 K - the triggers are connected to the output of the ISH1 element -NO, TJ - entrances. , 3k - flip-flops are connected to the reset input of the device, C - inputs 3 K - flip-flops, are connected to the corresponding loop and information inputs of the device. S Yu sp go

Description

The invention relates to radio engineering and automation, can be used in biochemical studies to determine the reaction rate of various subjects, to determine the priority of the onset of one of the events, and more specifically in industrial systems, for example, to determine the response time of contact groups of electromagnetic relays during acceptance tests il input control.

A well-known logical circuit that detects the first event, containing input switches, event triggers, resistors, display units according to the number of events and the reset bus. The principle of operation of such a device is based on the fact that in the initial state, the inverse outputs of event triggers allow the passage of signals through AND-NOT elements. When one of the input switches is closed, the corresponding event trigger changes its state, and the logic zero signal from its inverse output prohibits the passage of signals through the other elements ²⁵ AND-NOT L13.

The disadvantages of the device include the presence in the circuit of multi-input AND-NOT elements, the number of which increases with increasing input switches, and 30 an increased number of connections in the circuit. The presence of multi-input elements and a large number of connections increase the dimensions, power consumption, and reduce the noise immunity of the device. The disadvantages of mouth ^ ₅ roystva include the fact that one of, the inputs of each AND-NO element is connected a resistor, through which the input current tekayushy You are a chip, which reduces the static noise immunity of the device,

A well-known device for detecting the first event, containing input switches, resistors, event triggers and indication blocks according to the number of events studied, an OR-NOT element, and direct direct ^ outputs of event triggers connected to the inputs of indication blocks [2] ·

The disadvantages of the known device slo- ^A blowing include low reliability of detection of the first event, since the newly od PE __ mennom allowing two minutes more than ⁵⁰ gels input You are a key is removed ban on R-inputs of a corresponding event triggers, and at the C-terminal signal recording switch these triggers, it is not possible to determine the priority of a ⁵⁵ co-existence. In addition, on the R- and C-inputs of VNIIPI Order 4413/50 event triggers, the input signals come with a bounce, which can lead to multiple zeroing of triggers on the R-inputs and repeated switching on, while, for example, a third event can be recorded ¹ like first® and vice versa.

A common disadvantage of the known schemes is the low reliability of the fixation of the first event and the low reliability of the device.

The purpose of the invention is to increase the reliability of fixing the first event.

This goal is achieved by the fact that in the device for detecting the first event - containing an OR-NOT element, a group of P (AND - the number of events) JK-triggers, a group of P indication elements in which the unit outputs J K-triggers are connected to the inputs display elements of the same name, inputs of the element are NOT connected to straight lines _; the outputs of JK triggers, 3 and K ~ the inputs of the ZK triggers are connected to the output of the OR-NOT element, R - inputs of 3 K - triggers are connected to the reset input of the device, C - inputs of the LC - triggers are connected to the corresponding information inputs of the device.

The drawing shows a structural diagram of the device.

The device contains triggers 1, an OR-NOT 2 element, indication elements 3, device reset input 4, information • device inputs 5.

The device operates as follows.

To bring the device to its initial state, input 4 gives a signal that resets triggers 1 to 'O', while 1 * comes from the output of the OR-NOT 2 element to the JK inputs of all triggers 1 *. When one of the inputs 5 is activated, the corresponding trigger 1 is set to * 1 'and the indication element 3 lights up. The OR-NOT 2 element also works and O 'blocks all triggers 1 from its output. When inputs 5 are triggered, with a time difference • that cannot be visually fixed, the indication element 3 corresponding to the first triggered input will still burn, since the difference in the response time of inputs 5 is many times greater than the total delay time of trigger 1 and the element OR NOT 2.

The application of the invention improves the reliability of the device. by increasing the reliability of fixing the 'first event. *

Circulation 936 Subscription:

Branch of PPP 'Patent', Uzhhorod, st. Project, 4

Claims (2)

DEVICE FOR DETECTING FIRST EVENT EVENT containing I. * OR-HE element, a group of P (ft number of events) 3 K-triggers, a group of P indication elements, in which - 3 K single outputs - triggers are connected to the inputs of the same display elements, OR-HE element inputs are connected to direct outputs triggers, with the fact that, in order to increase the reliability of fixing the first event, 3 AND K — inputs of 3 K — triggers connected to the output of the OR-HE element, k — inputs. - triggers connected to the reset input of the device, C - inputs of 3 k - triggers -, connected to the corresponding information inputs of the device.