SU997253A1

SU997253A1 - D flip-flop with serviceability self-check

Info

Publication number: SU997253A1
Application number: SU813301448A
Authority: SU
Inventors: Сергей Михайлович Терешко; Владимир Сергеевич Панчиков; Андрей Аркадьевич Парфенов; Михаил Михайлович Татур
Original assignee: Минское Высшее Инженерное Зенитное Ракетное Училище Противовоздушной Обороны
Priority date: 1981-06-12
Filing date: 1981-06-12
Publication date: 1983-02-15

Description

(54) D-ТРИГГЕР С АВТОНОМНОЙ ПРОВЕРКОЙ РАЮТОСПОСОБНОСТИ(54) D-TRIGGER WITH AUTONOMOUS RELIABILITY CHECK

Изобретение относитс к автоматике и вычислительной технике и может быть примене1|,о при построений высокодиаг ностируемых устройств обработки цифровой информации. .... : Известен О- риггар, содержащий Информационную и тактовые шины, четыре элемента И-НЕ.The invention relates to automation and computing, and can be applied to the construction of highly diagnosable digital information processing devices. ....: Origgar is known, containing Information and clock tires, four AND-NOT elements.

Недостатком известного устройства вл етс его низка приспособленность к контролю работоспособности и диагностированию неисправностей.A disadvantage of the known device is its low adaptability to the performance monitoring and troubleshooting.

Известен D-триггер, содержащий два элемента РАВНОЗНАЧНОСТЬ, эле- I мент И,входную шину и информационную шику, котора соединена с первыми входами первого и второго элементов РАВНОЗНАЧНОСТЬ, вторые входы .которых соединены соответственно с выходом второго элемента РАВНОЗНАЧНОСТЬ и с выходом элемента И, первый и второй входы которого соединены соответственно со входной шиной и с выходом первого элемента РАВНОЗНАЧНОСТЬ 23 .A D-flip-flop is known, containing two EQUALITY elements, an I element, an input bus and informational shear, which is connected to the first inputs of the first and second EQUALITY elements, the second inputs of which are connected respectively to the output of the second EQUALITY element and to the output of the AND element, the first and second inputs of which are connected respectively with the input bus and with the output of the first element EQUALITY 23.

Недостатком данного технического решени также вл етс сложна система контрол , заключающа с в по- . ,этапной проверке D-триггера логическим нулем а затем логической единицей , а также слаба приспособленность схемы триггера к диагностике неисправностей, объ сн юща с наличием в схеме элемента И. Это приводит к тому, что логические ошибки эквивалентность нулю на входах и выходе элемента И - не различны.The disadvantage of this technical solution is also a complex control system consisting in -. , a step test of the D-flip-flop with a logical zero and then a logical one, as well as a weakness of the trigger circuit for fault diagnosis, which explains the presence in the circuit of the I. no different.

Цель изобретени - ускорение конт Q рол работоспособностчThe purpose of the invention is to accelerate the control of Q

Цель достигаетс тем, что в D-триггер с автономной проверкой работоспособности , содержащий.два элемента РАВНОЗНАЧНОСТЬ, входную шину и информационную шину, котора соединена сThe goal is achieved by the fact that in the D-trigger with autonomous operability check, containing two elements of EQUALITY, input bus and information bus, which is connected to

15 первым входом первого элетлента РАВНОЗНАЧНОСТЬ ., введены элемент НЕРАВНОЗНАЧНОСТЬ , и шина управлени , котора соединена с первым входом второго элемента РАВНОЗНАЧНОСТЬ, второй, третий15 by the first input of the first elektlenta. EMERGENCY., The element UNBETTER is entered, and the control bus, which is connected to the first input of the second element, the UNIFORM, second, third

20 входы и выход которЬго соединены соответственно со входной шиной, с выходом первого элемента РАВНОЗНАЧНОСТЬ и спервым входом элемента НЕРАВНОЗНАЧНОСТЬ , второй вход и выход которогоThe 20 inputs and the output of which are respectively connected with the input bus, with the output of the first element EQUALITY and the first input of the element UNEQUALITY, the second input and output of which

Claims

25 are connected, respectively, to the informational and the second input of the first element - the equal value. The drawing shows a D-rigger with an autonomous operability check. D-flip-flop contains elements 1 and EQUALITY, element 3 UNAUTION, information bus 4, input to bus 5, control bus 6 and output to bus 7. Information bus 4 is connected to the first inputs of element 1 EQUALITY AND element 3 UNEQUALITY, the second inputs of which connected to the output of the element 3 UNEMNATABILITY And with the output of the element 2 EQUALITY, the KuTOpor inputs are connected respectively to the output of the element 1 EQUALITY, to the input bus 5 and to the control bus 6, the output bus 7 is connected to the output of the element 3 HEP VNOZNACHNOST. Logical expression for the proposed D-flip-flop F ((DF + DF) CU + (-DF + DF) si) D + - --O, + ((DF + DF) CU + (DF + DF) si) where F is the function at the output of the element j; D, C, and - signals, respectively, on tires 4-6,. In the operating mode, the bus .6 is given a logical zero signal at THIS function F at the output of element 3 has the form f-TUC + The invention D-trigger trigger with stand-alone performance test, containing two elements equal, the input bus and the information bus, which is connected to the first the input of the first element is EQUALITY, which is characterized by the fact that an element is entered into it with the aim of speeding up the performance monitoring. UNEQUAL DETAILS and the control bus, which is connected to the first input of the second element EQUALITY, the second, | The third inputs and the output of which are connected to; responsibly to the input bus, the output and the device performs the D-flip-flop function. In the health monitoring mode, a signal is sent to the control bus 6. Constant 1,. In this case, if there is a logical unit on bus 5, the device generates Meander-type pulses. The presence of any malfunction leading to the appearance of logical errors (, O) of any element of the circuit will lead to a breakdown of generation. The method of monitoring the operability of the automatic memory by checking the generation permits monitoring for one cycle by changing the signal on bus 6 of the control from Constant O to Constant 1 while simultaneously feeding logical-unit across bus 5. The appearance of logical errors at the outputs of the elements of the device circuit leads to the appearance of fault functions, which are listed in the table. Thus, the proposed D-trigger has a simple control system and is fully diagnosed with the accuracy of the type of failure of any element of the device. the house of the first EQUALITY element and the first input of the UNEQUALITY element, the second input and output of which are connected respectively with the information bus and with the second input of the first ELEMENT element. Sources of information taken into account in the examination 1. Samofalov, Korneychuk et al., Electronic digital computers, Kiev, Higher School, 1976.

2. Mishchenko V.A. and others. Multifunctional automata and element on the base of digital computers. M., Radio and Communication, 1981, p. 210 proto.typ.

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