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Optical coupling isolation device

An optocoupler isolation and loop technology, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as reverse series, circuit interference, and affecting the work of engineering equipment

Active Publication Date: 2012-08-22
SHANGHAI CHUANGLI GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing coal mining machines and roadheaders, the non-intrinsically safe circuit is directly connected to the intrinsically safe circuit, and its disadvantage is that the power supply of the non-intrinsically safe circuit is often reversely connected to the intrinsically safe circuit or the strong electromagnetic interference controller, etc., causing the circuit Interference affects the work of engineering equipment

Method used

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  • Optical coupling isolation device
  • Optical coupling isolation device
  • Optical coupling isolation device

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Embodiment Construction

[0018] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention provides an optocoupler isolation device, which includes an optocoupler module 1 and a relay module 2 circuit-connected with the optocoupler module 1 .

[0020] The optocoupler module 1 includes six optocoupler units connected in parallel; the six optocoupler units use three optocoupler chips U1, U2 and U3 connected in parallel, and the optocoupler chips U1, U2 and U3 use TL521-4 chips ; The optocoupler chip includes four light-emitting diodes LED and four phototransistors VT, and the two ends of the four light-emitting diode LEDs contained in each optocoupler chip respectively occupy its pin 1, pin 2, and pin 3 in turn. , pin 4, pin 5, pin 5, pin 6, pin 7, and pin 8; the two ends of the four phototransistors VT in the optocoupler chip respectively occupy its pin 9 and pin 10 in turn , pin 11, pin...

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PUM

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Abstract

The invention provides an optical coupling isolation device which comprises an optical coupling module, a relay module and a poking button switch, wherein the relay module is in circuit connection with the optical coupling module and comprises a first contact module and a second contact module, the optical coupling module comprises a plurality of optical coupling units which are connected in parallel, and the poking button switch is arranged between the input loop of the relay module and the cathode end of an intrinsic safety circuit. By adopting the optical coupling module and the relay module, the invention enables the intrinsic safety circuit and a non-intrinsic safety circuit in a circuit to be isolated and prevents strong electromagnetic interference in an engineering site or prevents a non-intrinsic safety voltage from being oppositely serially connected into the intrinsic safety circuit through an output channel.

Description

technical field [0001] The invention relates to an isolation device used between an intrinsically safe circuit and a non-intrinsically safe circuit of a coal mining machine or a roadheader, and between a power supply and a controller, in particular to an optocoupler isolation device. Background technique [0002] At present, an intrinsically safe circuit refers to a circuit that cannot ignite a specified explosive gas atmosphere under normal operation or specified fault conditions. Non-intrinsically safe circuits are circuits that do not have the above-mentioned properties. Existing coal mining machines and roadheaders, the non-intrinsically safe circuit is directly connected to the intrinsically safe circuit, and its disadvantage is that the power supply of the non-intrinsically safe circuit is often reversely connected to the intrinsically safe circuit or the strong electromagnetic interference controller, etc., causing the circuit Interference affects the work of enginee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/02H02H3/04
Inventor 周学华赵江伟秦文彬吴福涛徐桂军
Owner SHANGHAI CHUANGLI GRP