SU1539510A1

SU1539510A1 - Thickness-to-time interval converter

Info

Publication number: SU1539510A1
Application number: SU874288649A
Authority: SU
Inventors: Виктор Григорьевич Брандорф; Владимир Леонович Котляров
Original assignee: Львовский политехнический институт им.Ленинского комсомола; Львовский Лесотехнический Институт
Priority date: 1987-07-22
Filing date: 1987-07-22
Publication date: 1990-01-30

Abstract

Изобретение относитс к устройствам дл толщинометрии и может быть использовано дл контрол толщины стенок крупногабаритных неферромагнитных изделий. Цель изобретени - повышение информативности. Дл этого на выходе первого элемента 13 ИЛИ формируютс импульсы длительностью Τ_X1 и Τ_X2. Первый из них пропорционален толщине стенки издели , помещенной между источником 3 пол и катушкой преобразовател 5, а второй - ее толщине и электрической проводимости. На втором выходе преобразовател присутствует сигнал, идентифицирующий эти импульсы (импульсу Τ_X1 соответствует уровень логического нул на втором выходе, а импульсу Τ_X2 - уровень логической единицы). 3 ил.The invention relates to devices for thickness measurement and can be used to control the wall thickness of large non-ferromagnetic products. The purpose of the invention is to increase the information content. For this, at the output of the first element 13 OR, pulses of duration Τ _X1 and Τ _{X2 are formed} . The first one is proportional to the wall thickness of the product placed between the source 3 floor and the coil of the transducer 5, and the second to its thickness and electrical conductivity. At the second output of the converter, there is a signal that identifies these pulses (the pulse Τ _X1 corresponds to the logic zero level at the second output, and the pulse Τ _X2 - the level of the logical unit). 3 il.

Description

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Claims

Claim

A thickness converter in a time interval comprising a dc voltage source connected in series, the first terminal of which is connected to a point of zero potential, a resistor, a field source and a first key, the second terminal of which is connected to the second, a constant voltage source terminal, an induction converter connected in series, and a second terminal which is connected to a point of zero potential, a second key, an integrator and a zero-organ, a third key, the conclusions of which are connected to the second conclusions, respectively, of the second o key and resistor, and a control circuit, the first and second outputs of which are connected to. control inputs of the first and second keys, respectively, and the first input is designed to connect to a clock source, characterized in that, in order to increase information content, it is equipped with a first trigger connected in series, the C-input of which is connected to the first output of the control circuit, and the inverse output connected to its D-input and is the first output of the converter, the second trigger, D-., C- and S-inputs of which are connected respectively to a point of zero potential, direct output of the first trigger and the output of zero body, and a first OR circuit, two inputs koto ^br swarm are respectively connected to an inverted output of the second flip-flop and a third output of the control circuit, and its 15 output is connected to a control input of the third switch and a second inverter output, and a second OR circuit, two inputs of which are connected accordingly, with the direct output of the first trigger and the output of the null organ, and the output of the second OR circuit is connected to the second input of the control circuit.

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FIG. 5