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Logic control device

A logic control and single-chip technology, applied in program control, computer control, general control systems, etc., can solve the problems of high cost and high equipment cost, and achieve the effects of low cost, high reliability and long life.

Active Publication Date: 2011-02-16
TIANJIN POLYTECHNIC UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Although the products of these companies are more advanced, the cost is generally higher, so that the cost of the whole machine equipment is often also very high.

Method used

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Embodiment Construction

[0019] The invention provides a general logic control device with low cost, long service life, high reliability, programmable, modifiable program and easy replacement of components. The system provides a new method for further improving the control of small and medium-sized equipment, and greatly improves the market competitiveness of the equipment. The following describes the logic control device in detail with reference to the embodiments and the accompanying drawings.

[0020] like figure 1 As shown, the logic control device of the present invention includes a single-chip microcomputer system 2, and is also provided with: an input circuit 1, which is used for the single-chip microcomputer system to accept signals provided by field devices, such as buttons, operation switches, limit switches, relay contacts, proximity Switches, etc.; relay output circuit 3, which is used to transform the weak electrical signal of the single chip microcomputer into a strong electrical signal...

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Abstract

The invention discloses a logic control device, which comprises an input circuit, a monolithic system, a relay output circuit, a transistor output circuit and a power supply. The logic control device belongs to the field of automation control, solves the problem that general small and medium-sized equipment is high in controlling cost, and provides a new way to control the small and medium-sized equipment. The logic control device is characterized in that an input interface adopts a 20-point on-off output, and can perform NPN / PNP input switching and displayed through inputting a LED; an output interface adopts a 8-point relay output and a 4-point transistor output; and the core system adopts a single-chip, and has the functions of logic operation, timing, counting and the like. The logic control device is a general-purpose control device, and can universally replace the PLC controlling of small and medium-sized equipment, thereby achieving the purpose of saving cost.

Description

technical field [0001] The invention relates to a logic control device. In particular, it relates to a universal logic control device with low cost, long service life, high reliability, programmable, modifiable program and easy replacement of components. Background technique [0002] At present, with the rapid development of modern industry, especially in today's rising cost of human resources, various small and medium-sized control equipment are more and more used by enterprises, and their automation degree is getting higher and higher. This forces the improvement of the degree of automation of its supporting controllers, so programmable logic controllers (PLC) are more and more used in it. Programmable logic controller (PLC) is a new type of industrial automatic control device developed on the basis of microprocessors and integrated with modern technologies such as computer technology, automatic control technology and communication technology. It applies computer technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 李阳李群高圣伟肖朝霞刘雪莉
Owner TIANJIN POLYTECHNIC UNIV
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