SU1685776A1

SU1685776A1 - Device for determining speed of rolling stock

Info

Publication number: SU1685776A1
Application number: SU894656173A
Authority: SU
Inventors: Вячеслав Кимович Васин; Виктор Иванович Жуков; Виктор Дмитриевич Федосов
Original assignee: Московский Институт Инженеров Железнодорожного Транспорта
Priority date: 1989-02-28
Filing date: 1989-02-28
Publication date: 1991-10-23

Abstract

Изобретение относитс к железнодорожной автоматике, в частности к устройствам определени скорости подвижного состава. Цель изобретени - повышение надежности. Дл достижени этой цели в устройство, содержащее генератор 1 импульсов, к которому подключен излучатель 2, установленный по одну сторону от рельса 6, и установленные по другую сторону фотоприемник 4, выход которого подключен к входу усилител 7 переменного тока, вычитающий счетчик 14, формирователь 13 сигнала, блок 17 выдержки времени и индикатор скорости 16, дополнительно увеличиваетс число используемых в устройстве известных блоков. Устройство содержит также второй излучатель 3, фотоприемник 5, усилитель 8 переменного тока. В устройство ввод т новые блоки: блок 11 контрол вступлени поезда на участок приближени , элемент 12 логической эквивалентности и элемент 19 логического запрета. По последовательности и продолжительности перекрыти колесом лучей оптической св зи между излучател ми и фотоприемниками оцениваютс скоростные характеристики движущегос состава. Кроме того, наличие второго датчика обеспечивает прекращение счета при остановке состава и перекрытии другого датчика. При перекрытии двух лучей или при остановке без перекрыти над двум датчиками работает элемент 12 логической эквивалентности . 2 ил. (Л СThe invention relates to railway automation, in particular to devices for determining the speed of rolling stock. The purpose of the invention is to increase reliability. To achieve this goal, a device containing a pulse generator 1, to which an emitter 2 connected to one side of the rail 6 is connected, and a photodetector 4 installed on the other side, the output of which is connected to the input of an AC amplifier 7, subtracting counter 14, driver 13 The signal, the time delay block 17 and the speed indicator 16 additionally increase the number of known blocks used in the device. The device also contains a second emitter 3, a photodetector 5, an amplifier 8 of alternating current. New blocks are introduced into the device: block 11, which controls the entry of the train to the approach section, the logical equivalence element 12 and the logical inhibit element 19. By the sequence and duration of the overlap of the optical communication beam between the radiators and photodetectors, the velocity characteristics of the moving train are estimated. In addition, the presence of a second sensor ensures that the counting stops when the composition is stopped and another sensor overlaps. When two beams overlap or when they stop without overlapping, two elements of logical equivalence work over two sensors. 2 Il. (Ls

Description

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Claims

A device for determining the speed of a rolling stock containing a pulse generator to which an emitter is connected. mounted on one side of the rail and mounted on the other side of the photo pick-up, the output of which is connected to the input of the AC amplifier, a subtracting counter, a time delay unit, 30 a signal conditioner and an indicator, as a result. that, in order to increase reliability, it is equipped with an RS-trigger, a control unit for the train entering the approaching area, and an additional emitter. photodetector and additional AC amplifier connected to it, a logical equivalence element, a logic inhibit element and detectors, the inputs of which are connected to 40 outputs of the first and second amplifiers connected to the control inputs of the subtracting counter, and the first outputs to the first and second inputs of the entry control unit trains to the approach section, 45 the third and fourth inputs of which are connected to the first output of the time delay element and the reverse output of the KZ-trigger, respectively, and the second exits s - with the first and second inputs of the logical equivalence element50, the output of which is connected to the locking input of the subtracting counter and the input of the signal shaper, the first output of which is connected to the zero input of the RS-trigger, and the second - with 55 inputs of the decoder and time delay element , the second output of which is connected to the first input of the logical equivalence unit, the second input of which is connected to the direct output of the RS-trigger, the unit input of which is connected to one of the outputs of the subtracting count a sensor, the other outputs of which are connected to other inputs of the decoder, the output of which is connected to the indicator input, the input of the installation in the zero state of which is connected to the output of the logical equivalence element.