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solid state relay circuit

A solid-state relay and circuit technology, applied in the field of rail transit, can solve problems such as easy sparks, contact oxidation, and poor reliability

Active Publication Date: 2022-04-19
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a solid-state relay circuit to solve the problem that the existing electromagnetic relay is prone to sparks when the contacts are turned on and off, and long-term use is likely to cause contact oxidation and poor reliability.

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated ...

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Abstract

An embodiment of the present invention provides a solid-state relay circuit, including: a first input circuit, a second input circuit, a first isolation circuit, a plurality of output circuits, the output end of the first input circuit is connected to the input end of the first isolation circuit, The first input circuit is used to provide a drive signal to the solid state relay circuit. The output terminal of the first isolation circuit is connected to a plurality of output circuits, each output circuit includes at least one switch circuit, the second input circuit is connected to the switch circuit, and the second input circuit Used to keep switching circuits normally open or normally closed. The solid-state relay circuit provided by the embodiment of the present invention improves the reliability of the solid-state relay.

Description

technical field [0001] The invention relates to rail transit technology, in particular to a solid-state relay circuit. Background technique [0002] The relay is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity meets the specified requirements. It is usually used in the automatic control circuit and plays a role. Functions such as automatic adjustment, safety protection, conversion circuit, etc. [0003] In the prior art, an electromagnetic relay is usually used in the electrical control system of a railway vehicle, and the electromagnetic relay includes an electromagnet, an armature, a spring, a moving contact and a static contact. In actual work, when the switch of the control circuit is closed, a magnetic field is generated when the current passes through the coil on the electromagnet, thereby generating an attrac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/02
CPCH01H47/02
Inventor 吴宁吴悠王大朋李辉耀
Owner CRRC TANGSHAN CO LTD