Shifting switching value input/output device

A technology of switching input and output devices, applied in electrical program control, program control in sequence/logic controllers, etc., can solve the problem that IO resources cannot meet the needs of use, reduce the configuration of output points, and save input and output channels , the effect of no bus resource requirements

Inactive Publication Date: 2012-10-10
BAOJI PETROLEUM MASCH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a shift-type switch input and output device, which solves the problem that in many cases, IO resources cannot meet the use requirements in the development of embedded systems in the prior art

Method used

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  • Shifting switching value input/output device
  • Shifting switching value input/output device
  • Shifting switching value input/output device

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] In the following embodiments of the present invention, an 8-bit serial-in-parallel shift register 74LS595 with a latch and an 8-bit serial-in-parallel shift register 74LS597 with a latch are selected.

[0019] refer to figure 1 , the structure of the shift type switching value input and output device of the present invention is to include a DC step-down circuit 1, and the DC step-down circuit 1 is simultaneously connected with a control interface circuit 3, an output signal processing circuit 2, a signal acquisition and processing circuit 4, and a cascade circuit 5 are respectively connected to provide power supply support, and the cascade circuit 5 is sequentially connected with the signal acquisition and processing circuit 4 and the control interface circuit 3; in addition, the control interface circuit 3 is provided with a signal in...

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Abstract

The invention discloses a shifting switching value input/output device. The shifting switching value input/output device comprises a direct-current step-down circuit which is simultaneously and respectively connected with a control interface circuit, an output signal processing circuit, a signal acquisition processing circuit and a cascade circuit, the cascade circuit is sequentially connected with the signal acquisition processing circuit and the control interface circuit, the control interface circuit is provided with a signal input end, two signal output ends of the control interface circuit are simultaneously connected with the output signal processing unit and the signal acquisition processing circuit respectively, the signal acquisition processing circuit is additionally provided with a signal input end, and the output signal processing circuit is additionally provided with a signal output end. The shift-chip-based IO (input/output) device of a serial mechanism only occupies a DO6 of a controller, functions of DO8 and DI8 can be achieved by a DI1, capacity can be expanded in a cascade mode, and control of multiple points can be achieved, so that input and output channels of the controller are saved, and wiring during remote acquisition is concise while use is flexible.

Description

technical field [0001] The invention belongs to the technical field of switch electric control, is a switching value output processing technical device in an automatic control system, and relates to a displacement type switching value input and output device. Background technique [0002] With the automation of electrical equipment getting higher and higher, the control system needs to control more and more on-site variables, especially the control of various switches. One point needs to occupy one output point of the controller, and hardware resources are particularly important. Limited, when developing embedded systems, in many cases, IO resources cannot meet the needs of use. For example, PLC control also needs to add a large number of output modules, increase racks for expansion, increase hardware costs and require a large installation space, and at the same time The wiring is also very complicated; the distributed modules of the bus, the control interface is not open, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 梁春平于兴军李庆福吴阳曹振兴
Owner BAOJI PETROLEUM MASCH CO LTD
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