The invention concerns such field of research as technique of diagnostics system.
Early known devices provide manual handling of measuring process, and they are not time-consuming and demand special knowledge for accomplishing parameter measuring. The given development increases economic effect of fuel outlay and improve technical diagnostic quality of locomotive diesel. The new conception of a pressure sensor construction that is included into diagnostic equipment and improving of proper equipment are the general idea of the system.
Unlike other similar pressure sensors the represented one is constructed on basis of thensometric effect, and it is mounted on the high pressure pipe. The sensor forms a part of fuel injection moment definition system that, besides, includes an amplifier, a transformation circuit, DAC, digital indication system, a formator of surpass angle sample. A formator consists of Low Breaking Point sensor, crankshaft rotation angle sensor and a ramp generator.
The way of functioning is the following. The signal from the pressure sensor gets through the amplifier to the indication system unit. At the same time the signals get from Low Breaking Point sensor and from the crankshaft rotation angle sensor to the impulse counter. Low Breaking Point sensor signal break down the counter, the rotation angle sensor signal is summarized. The automatic formator of angle sample parallel to the counter joins in system for setting on the required rotation angle. As far as the counter reaches the given number setting at the formator of angle sample the coincidence circuit forms the impulse that will lock the circuit and turn on DAC chip simultaneously, so that as a result the pressure proportional to the given crankshaft rotation angle is shown at the indicator screen.
The represented invention provides the high quality of parameter measuring without losses in time and sensitivity characteristics. This device is also a system of indestructible control, and it is capable to provide the automatic handling and control of locomotive fuel system.
References:
-
Федотов Г.Б., Левин Г.И. Топливные системы тепловозных двигателей: ремонт, испытания, совершенствование. - Москва «Транспорт», 1983.
-
Агейкин Д.И. Датчики контроля и регулирования. – Москва, «Машиностроение», 1965.
-
Левшина Е.С., Новицкий П.В. Электрические измерения физических величин. - Ленинград, «Энергоатомиздат», 1983.
-
Лебедев О.Н. и др. Двигатели внутреннего сгорания. – Москва, «Транспорт», 1990.
-
Сизых В.А. Судовая автоматика и аппаратура контроля. – Москва, «Транспорт», 1986.
Д.А.Мовсесян ИСПОЛЬЗОВАНИЕ ТЕХНОЛОГИИ ДИНАМИЧЕСКИХ WEB-СТРАНИЦ ДЛЯ ОРГАНИЗАЦИИ АНОНИМНОГО ТЕСТИРОВАНИЯ В ДИСТАНЦИОННОМ ОБУЧЕНИИ
Àíàëèçèðóåòñÿ ñîâðåìåííîå ñîñòîÿíèå òåõíîëîãîé äèñòàíöèîííîãî îáó÷åíèÿ è ïåðåñïåêòèâû ïðèìåíåíèÿ â íåì òåõíîëîãèé Internet â Àðìåíèè, Ïðåäëàãàåòñÿ èñïîëüçîâàòü òåõíîëîãèþ ôîðìèðîâàíèÿ ãèïåðòåêñòîâûõ ñòðàíèö â ñèñòåìå WWW äëÿ îðãàíèçàöèè ãèáêîé ñèñòåìû â äèàëîãîâîì ðåæèìå ïðåäîñòàâëÿþùåé ó÷åáíûé ìàòåðèàë è ïðîâîäÿùåé àíîíèìíîå òåñòèðîâàíèå. Ðàññìàòðèâàåòñÿ ìåòîä õðàíåíèÿ èíôîðìàöèè î ñðåäå àíîíèìíîãî ïîëüçîâàòåëÿ, ïðèìåíÿåìûé â ñèñòåìàõ ýëåêòðîííîé êîììåðöèè, à òàêæå ñïîñîá èñïîëüçîâàíèÿ êîìïüþòåðíîé òåëåôîíèè â äèñòàíöèîííîì îáó÷åíèè.
 íàñòîÿùåå âðåìÿ âñå áîëüøåå çíà÷åíèå ïîëó÷àåò îðãàíèçàöèÿ îáó÷åíèÿ ñòóäåíòîâ áåç îòðûâà îò ïðîèçâîäñòâà ïðè ïîìîùè, òàê íàçûâàåìîãî, äèñòàíöèîííîãî îáó÷åíèÿ. Ïðè ýòîì â îòëè÷èå îò òðàäèöèîííûõ òåõíîëîãèé çàî÷íîãî îáó÷åíèÿ, â êîòîðûõ èñïîëüçóåòñÿ ìåòîä ðàñïðîñòðàíåíèÿ ó÷åáíûõ ìàòåðèàëîâ è êîíòðîëüíûõ çàäàíèé ïî ïî÷òå, âñå øèðå ïðèìåíÿþòñÿ ñîâðåìåííûå êîììóíèêàöèîííûå òåõíîëîãèè, â êîòîðûõ èñïîëüçóþòñÿ ñðåäñòâà àóäèî- è âèäåî- ñâÿçè. Ðàññìàòðèâàÿ íûíåøíþþ ñèòóàöèþ ñ äèñòàíöèîííûì îáó÷åíèåì â Àðìåíèè, ìîæíî âûäåëèòü ñëåäóþùåå: Âî-ïåðâûõ, ïåðåâîä ýêîíîìèêè ðåñïóáëèêè ê ðûíî÷íûì îòíîøåíèÿì òðåáóåò ïîäãîòîâêè áîëüøîãî ÷èñëà ñïåöèàëèñòîâ íîâûê ïðîôåññèé - ñïåöèàëèñòîâ ïî ìåíåäæìåíòó, ìàðêåòèíãó, áèçíåñó, ðåêëàìå, áóõãàëòåðîâ, âëàäåþùèõ íîâûìè ôèíàíñîâûìè òåõíîëîãèÿìè, äèëåðîâ, áðîêåðîâ è ò.ä. Êðîìå òîãî íåîáõîäèìî â ñæàòûå ñðîêè ïðîâîäèòü êóðñû ïîâûøåíèÿ êâàëèôèêàöèè ñïåöèàëèñòîâ, îáó÷åíèÿ èíîñòðàííûì ÿçûêàì è ñîâðåìåííûì êîìïüþòåðíûì è êîììóíèêàöèîííûì òåõíîëîãèÿì. Ñåãîäíÿøíÿÿ ýêîíîìè÷åñêàÿ ñèòóàöèÿ äèêòóåò íåîáõîäèìîñòü ïðîâîäèòü ïîäîáíóþ ïîäãîòîâêó áåç îòðûâà îò ïðîèçâîäñòâà. Ñ ýòîé òî÷êè çðåíèÿ äèñòàíöèîííîå îáó÷åíèå â Àðìåíèè èìååò î÷åíü õîðîøèå ïåðñïåêòèâû. Âî-âòîðûõ, íà ñåãîäíÿøíèé äåíü, ìíîãèå îáó÷àþùèå öåíòðû è çàèíòåðåñîâàííûå îðãàíèçàöèè â Àðìåíèè íå ìîãóò ñåáå ïîçâîëèòü èñïîëüçîâàòü äîðîãîñòîÿùåå îáîðóäîâàíèå äëÿ îðãàíèçàöèè äèñòàíöèîííîãî îáó÷åíèÿ ñ èñïîëüçîâàíèåì, íàïðèìåð, ñîâðåìåííûõ âèäåî-ñðåäñòâ ïîñêîëüêó ýòî òðåáóåò çíà÷èòåëüíûõ âëîæåíèé â àïïàðàòóðó è ñêîðîñòíûå òåëåêîììóíèêàöèè. Ïðè ýòîì ìíîãèå èç ýòèõ îðãàíèçàöèé àêòèâíî óâåëè÷èâàþò ñâîè êîìïüþòåðíûå è ñåòåâûå âîçìîæíîñòè, ïîäêëþ÷àÿñü ê ñåòè Internet.  ïðîöåññå ïðèìåíåíèÿ òåõíîëîãèé Internet â Àðìåíèè íåîáõîäèìî ó÷èòûâàòü íèçêóþ ïðîïóñêíóþ ñïîñîáíîñòü áîëüøèíñòâà ëèíèé òåëåôîííûõ êîììóíèêàöèé. Íàìè ïðåäëàãàåòñÿ èñïîëüçîâàòü ìåõàíèçìû ôîðìèðîâàíèÿ äèíàìè÷åñêèõ ñòðàíèö ñåðâåðîâ WWW, èñïîëüçóþøèõ ÁÄ äëÿ îðãàíèçàöèè äèñòàíöèîííîãî îáó÷åíèÿ è ïðîâåäåíèÿ òåñòèðîâàíèÿ. Êðîìå òîãî ïðåäëàãàåòñÿ ìåõàíèçì ðåàëèçàöèè ñèñòåìû äèñòàíöèîííîãî îáó÷åíèÿ ñ èñïîëüçîâàíèåì âîçìîæíîñòåé òåëåôîííûõ êîìïüþòåðíûõ ïëàò äëÿ îðãàíèçàöèè âçàèìîäåéñòâèÿ ñî ñòóäåíòàìè ïî òåëåôîíó. Ê ìåõàíèçìàì ôîðìèðîâàíèÿ äèíàìè÷åñêèõ Web ñòðàíèö âîçìîæíûå äëÿ èñïîëüçîâàíèÿ â äèñòàíöèîííîì îáó÷åíèè ìîãóò áûòü îòíåñåíû ìåòîäû CGI è ISAPI íà ñòîðîíå ñåðâåðà, à òàêæå èíòåðïðåòèðóåìûå ÿçûêè JavaScript èëè VBScript è îáúåêòû Java è ActiveX [1] íà ñòîðîíå êëèåíòà.  ñîâðåìåííûõ êîììåð÷åñêèõ îðàíèçàöèÿõ áîëüøîé ïîïóëÿðíîñòüþ ïîëüçóåòñÿ òåõíîëãèÿ Microsoft ASP - ðàñøèðåíèå ISAPI [2]. Äàííàÿ òåõíîëîãèÿ ðåàëèçîâàíà íà Web ñåðâåðàõ Microsoft IIS, Peer Web server è Personal Web server Option Pack, ðàáîòàþùèõ íà ïëàòôîðìàõ Windows 95/98 è Windows NT. Äàííàÿ òåõíîëîãèÿ ïîçâîëÿåò ïðè ñîçäàíèè ïðèëîæåíèé, ðàáîòàþùèõ ñ èñïîëüçîâàíèåì áèáëèîòåê DLL ISAPI Microsoft IIS èñïîëüçîâàòü îáúåêòû ADO - Active Data Object, êîòîðûå ìîãóò ðàáîòàòü ñ èñòî÷íèêàìè äàííûõ çàðåãèñòðèðèâàííûìè â ñèñòåìå, íàïðèìåð ODBC. Êðîìå îáúåêòîâ ïî äîñòóïó ê äàííûì íàñòîÿùàÿ ñèñòåìà ïîçâîëÿåò èñïîëüçîâàòü îáúåêòû äðóãèõ Microsoft ñîâìåñòèìûõ îáúåêòîâ, íàïðèìåð îáúåêòû ñèñòåìû Microsoft Index Server, ïîçâîëÿþùåé ïðîâîäèòü ïîèñê ïî Web ñåðâåðó.
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