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Connection mode of IO card and bus base of DCS hardware and signal transmission method

A connection method and bus technology, which is applied in the direction of connection, components of connection devices, devices for preventing wrong connection, etc., can solve the problems of easy aging, deformation and corrosion, and no electromagnetic shielding effect

Active Publication Date: 2021-09-07
北京新航智科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current domestic and foreign products are all made of plastic molds to make bases and clips, which are easy to age, deform and corrode, and have no electromagnetic shielding effect.

Method used

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  • Connection mode of IO card and bus base of DCS hardware and signal transmission method
  • Connection mode of IO card and bus base of DCS hardware and signal transmission method
  • Connection mode of IO card and bus base of DCS hardware and signal transmission method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see Figure 1~5 , in an embodiment of the present invention, a DCS hardware IO card is connected to a bus base, the IO card 1 includes a first card board 11 and a second card board 12, the second card board 12 is a signal processing board, The tops of the first clamping board 11 and the second clamping board 12 communicate through pins, and the bottoms are fixedly connected through U-shaped sheet metal parts.

[0026] The circuit board of the bus base 2 includes 4 layers, which are designed for stacking. The bottom layer and the top layer are all coated with copper, and are electrically connected to the ground through the chassis to form an effective shielding layer, which improves the anti-interference ability of the communication bus. The middle two layers adopt double redundant wiring for on-site signals, which effectively prevents the wires from being blown by strong current signals on site.

[0027] Both ends of the bus base 2 are provided with D-Sub connectors 21...

Embodiment 2

[0051] A signal transmission method between an IO card of DCS hardware and a bus base. When the current of the field signal is greater than 0.5A, the field signal enters the bus base 2 from the connection terminal 22 and enters the signal of the IO card 1 through the insurance terminal 23. processing board. This design can prevent wrong wiring on site from causing high current to burn out the card, and protect the card.

[0052] When the current of the field signal is less than 0.5A, the field signal enters the bus base 2 from the connection terminal 22 and directly enters the signal processing board of the IO card 1, and the safety terminal is electrically connected to the IO card.

[0053] The two connectors of the bus base 2 are arranged left and right, and the field signal is arranged on the second connector 4, and the communication and power supply of the DCS are arranged on the first connector 3; to ensure that the field low-frequency signal and high-speed communication ...

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PUM

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Abstract

The invention provides a connection mode of an IO card of DCS hardware and a bus base and a signal transmission method. The IO card comprises a first card board and a second card board; the second card board is a signal processing board, the top of the first card board and the top of the second card board are in communication and signal connection through a pin, and the bottom of the first card board and the bottom of the second card board are fixedly connected through a U-shaped sheet metal part; the bus base is electrically connected with the first card board through a first connector, the bus base is electrically connected with the second card board through a second connector, the first connector and the second connector are arranged side by side and are DIN connectors, the first connector is used for supplying power to the IO card, the second connector is used for inputting field signals of the IO card, and the field signals comprise a two-wire system signal and a three-wire system signal. According to the connecting mode, the clamping piece is convenient to mount and dismount, the good electromagnetic shielding effect is achieved, and the wire can be effectively prevented from being fused by field strong electric signals.

Description

technical field [0001] The invention relates to industrial control equipment, in particular to a connection method between an IO card of DCS hardware and a bus base and a signal transmission method. Background technique [0002] In industrial automation systems, distributed control system (DCS) modules are usually installed in one or more enclosures and the enclosures are mated to the chassis. Multiple distributed control modules are installed in the cabinet by cascading with each other. When multiple DCS modules are used, the existing DCS modules are connected through the connection between the bases to realize the connection between the DCS modules. The current domestic and foreign products all use plastic molds to make bases and clips, which are prone to aging, deformation and corrosion, and have no electromagnetic shielding effect. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a method for connecting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R13/648H01R13/70H01R13/64
CPCH01R13/648H01R13/70H01R13/64Y02P90/02
Inventor 喻越
Owner 北京新航智科技有限公司
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