SU957244A2

SU957244A2 - Technical signalling device

Info

Publication number: SU957244A2
Application number: SU802903307A
Authority: SU
Inventors: Юрий Иванович Федоров; Александр Савельевич Кашурко; Николай Иванович Никифоров; Аркадий Аркадьевич Умеренко; Вадим Георгиевич Кузьминов; Георгий Наумович Глузбанд
Original assignee: Украинский научно-исследовательский институт сельскохозяйственного машиностроения
Priority date: 1980-04-02
Filing date: 1980-04-02
Publication date: 1982-09-07

Description

(54) УСТРОЙСТВО ДЛЯ ТЕХНОПОгаЧЕСКОЙ СИГНАЛИЗАЦИИ(54) DEVICE FOR TECHNOLOGICAL SIGNALS

1one

Изобретение относитс к устройствам .дл контрол и сигнализации, используе.мым дл осуществлени многоточечного контрол выполнени технологического процесса , например, на мобильных и стационарных сельскохоз йственных агрегатах с различными технологическими процессами , с, широким пределом изменени контролируемых параметров и различным конструктивным исполнением.,рThe invention relates to devices for monitoring and signaling, used to implement multipoint monitoring of the implementation of the technological process, for example, on mobile and stationary agricultural units with various technological processes, with a wide limit of variation of the monitored parameters and various design versions.

По основному авт. св. № 618772 известно устройство дл технологической сигнализации, содержащее сигнальные чеЛки КЗ последовательно соединенных Датчиков , формировател с усилителем и р дного элемента, ключевой элемент с резистором на входе и сигнализатор, дополнительный усилитель, выходы разр дного элемента каждой сигнальной чейки подключены к резистору ключевого зле- 20 мента н через дополнительный усилитель к сигнализатору, а точка соединени дополнительного усилител и сигнализатора подключена к входу формировател According to the main author. St. No. 618772, a device for technological signaling is known, which contains the signal boxes of short-circuit of successively connected Sensors, a driver with an amplifier and a regular element, a key element with an input resistor and a signaling device, an additional amplifier, the outputs of the discharge element of each signal cell are connected to a key element 20 n through an additional amplifier to the signaling device, and the point of connection of the additional amplifier and signaling device is connected to the input of the driver

с усилителем каждой сигнальной чейки 1 .with an amplifier for each signal cell 1.

к недостаткам известного устройства относитс необходимость обеспечени зазора между шунтом и датчиком. Измейёкие этого зазора в процессе работы приводит к нарушению стабильности работы.A disadvantage of the known device is the need to provide a gap between the shunt and the sensor. Measuring this gap in the process of work leads to a violation of the stability of work.

Цель изобретени - повышение стабиль ности работы устройства.The purpose of the invention is to increase the stability of the device.

Поставленна цель достигаетс тем, что в устройство дл технологической CHr нализации установлен частотно-модулированный генераторный датчик с внешним контуром, соединенный через резистор с блоком сигнализации и через усилитель-формирователь с пороговым элементом, внешний контур частот не-модулированного датчика св зан с шунтом, который жестко соединен с рабочим органсм контролируемого объекта.The goal is achieved by installing a frequency-modulated oscillator sensor with an external circuit connected to a signaling CHR device and connected via a resistor to the signaling unit and through an amplifier-shaper with a threshold element, an external frequency band of the non-modulated sensor connected to the shunt, which rigidly connected to the working organ of the controlled object.

На чертеже приведена схема устройства дл технологической сигнализации.The drawing shows a diagram of a device for technological signaling.

Claims

The device contains frequency-modulated oscillating sensors 1, with external circuit 2, magnetically coupled to shunt 3, amplifiers-for mifters 4, discharge elements 5, time for setting tsegpi on resistors 6-9 and capacitors 1O-12, threshold elements on thyratrons 13 and 14, an additional amplifier 15, an audible indicator 16 entered into the signaling unit 17, and a resistor 18. The working body of the object under test is not shown in the drawing. The device works as follows. When the power is turned on through the resistor 18, the voltage goes to the frequency-modulated oscillator sensors 1, excites them with a frequency determined by the parameters of the electrical element of the sensors. When a controlled working device, for example, an agricultural machine, moves, a magnetic shunt 3 mounted on it periodically intersects the field of the external circuit 2 of the frequency-modulated oscillator sensor 1 This leads to a periodic breakdown of self-oscillations, and consequently, to a periodic change in the constant component of the collector current of the formers 4, acting through the discharge elements 5 at the time of the master circuits on the elements 6 and 10, carried out a periodic discharge of capacitor 1O, which in the period of time Neither between two successive changes in the mode of the amplifiers-formers 4 is charged from the power source through resistor 6. At the same time, if all the monitored nodes are intact at the facility, the potential of the capacitors 10 does not reach the ignition voltage of the thyratrons 13 control circuits and the thyratrons 13 do not light up (there is no visual indication; /, while the capacitor 11 is charged until the ignition voltage of the thyratron 14 across the grid of the cathode, the burning of which signals a normally functioning object. When a controlled organ develops, the frequency of the shunt's effect is reduced. remote sensor circuit, resulting in an increase in the charge time of the corresponding capacitor 1O, the potential of which reaches the ignition threshold of the thyratron 13 in the grid-cathode section, the ignition of which leads to a change in voltage on the resistor 7, which through the capacitor 12 acts on the thyratron 14, causing it to quench . The same voltage change acts on the input of the additional amplifier 15, the output signals of which are fed to the audio indicator 16 and to the inputs of the amplifier-formers 4, through the discharge elements 5, to discharge the capacitors 10, excluding the flow of information from the other sensors and ensuring the storage of information about a failed monitored node. Information remains until the capacitor 11 is charged to the ignition potential of the thyratron 14. The change in voltage on the resistor 9 through the capacitor 12 affects the matching of the thyratron 13, causing it to quench and drive the device to its initial state. Claims Device for technological signaling according to aut. St. No. 618772, which is based on the fact that, in order to increase the stability of its operation, it has a frequency-modulated oscillator sensor with an external circuit, connected through a resistor to the alarm unit and through a driver-amplifier with a threshold element, In this case, the external circuit of the frequency modulated sensor is connected to a shunt, which is rigidly connected to the working object of the object being monitored. Sources of information accepted in BHHMaHlie during the examination 1. USSR Author's Certificate No. 618772, cl. Q 08 23/00, 1976 (prototype).