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Four-redundancy discrete signal integrated circuit

A discrete signal, four-redundancy technology, applied in the field of avionics, can solve problems such as complex circuit structure, lower reliability, increase circuit complexity and cost, etc., achieve simple circuit structure, improve reliability, and omit signal processing and transformation The effect of the circuit

Active Publication Date: 2010-12-15
FLIGHT AUTOMATIC CONTROL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the circuit structure is complex, the discrete signal needs to be converted repeatedly from analog to digital to analog, and the output of the logic circuit needs to be processed by photoelectric isolation, level conversion and excitation amplification, which not only increases the complexity of the circuit sex and cost, and reduces reliability

Method used

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  • Four-redundancy discrete signal integrated circuit
  • Four-redundancy discrete signal integrated circuit
  • Four-redundancy discrete signal integrated circuit

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Embodiment Construction

[0008] The present invention will be described in further detail below. see figure 2 , a four-redundancy discrete signal integrated circuit is characterized in that it consists of four triode switch circuits with the same circuit structure from the first triode switch circuit 1 to the fourth triode switch circuit 4, and the triode switch circuit consists of NPN transistor G1, PNP transistor G2, resistors R1, R2, R3 and R4, and diode D. One end of resistor R1 is the discrete signal input end, and the other end is connected to the base of transistor G1. The emitter of transistor G1 is connected to the ground signal. R2 is connected between the collector of the transistor G1 and the base of the transistor G2, the resistor R3 is connected between the base of the transistor G2 and the collector of the transistor G2, the collector of the transistor G2 is the power input terminal, and the resistor R4 is connected to the transistor Between the G2 emitter and the positive pole of the...

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Abstract

The invention belongs to avionics technology, and relates to the improvement of a four-redundancy discrete signal integrated circuit. The improved four-redundancy discrete signal integrated circuit consists of a first triode switching circuit [1], a second triode switching circuit [2], a third triode switching circuit [3] and a fourth triode switching circuit [4] with the same circuit structure. The output end of the first triode switching circuit [1] is connected in parallel with the output end of the third triode switching circuit [3] and then is connected with power input ends of the second triode switching circuit [2] and the fourth triode switching circuit [4]; and the output ends of the second triode switching circuit [2] and the fourth triode switching circuit [4] are connected in parallel to become the output end of the four-redundancy discrete signal integrated circuit. The four-redundancy discrete signal integrated circuit has the advantages of simple circuit structure, elimination of a signal processing and converting circuit, greatly reduction of cost and improvement of reliability.

Description

technical field [0001] The invention belongs to the avionics technology and relates to the improvement of a four-redundancy discrete signal synthesis circuit. Background technique [0002] The structural principle of the existing four-redundancy discrete signal synthesis circuit is shown in figure 1 , it consists of a logic circuit, 4 signal processing circuits and a signal conversion circuit. The 4 discrete signals are respectively subjected to photoelectric isolation and level conversion by the 4 signal processing circuits and then input to the corresponding input terminals of the logic circuit. After logic processing, The output signal of the logic circuit is output after being processed by the signal conversion circuit. Its disadvantages are: the circuit structure is complex, the discrete signal needs to be converted repeatedly from analog to digital to analog, and the output of the logic circuit needs to be processed by photoelectric isolation, level conversion and exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/08
Inventor 武晓光陈刚何战斌王琦周成贾新强
Owner FLIGHT AUTOMATIC CONTROL RES INST
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