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Intelligent input for relay device containing a solid state relay

A technology of solid state relays and relays, applied in the direction of emergency protection circuit devices, relays, circuit devices, etc. for limiting overcurrent/overvoltage

Active Publication Date: 2017-07-11
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using solid state relays in a system designed for mechanical relays may require some significant changes to the system

Method used

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  • Intelligent input for relay device containing a solid state relay
  • Intelligent input for relay device containing a solid state relay
  • Intelligent input for relay device containing a solid state relay

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Example 1: A solid state relay (SSR) device comprising an output port and an input port, the relay device comprising: a power switch, wherein an output of the power switch corresponds to an output port of the SSR device; and a control unit configured to: receiving an input signal at an input port of the device; determining a voltage level of the input signal received at the input port; and in response to the voltage level of the input signal meeting a threshold, waiting a predetermined time delay, and after the predetermined time delay, controlling The output of the power switch, thereby controlling the output of the SSR device.

example 2

[0055] Example 2: The apparatus of example 1, wherein the control unit determines that the voltage level of the input signal satisfies the threshold by determining that the voltage level is not only greater than the first voltage threshold but also less than a second voltage threshold.

example 3

[0056] Example 3: The apparatus of any of examples 1-2, wherein based on the value of the first voltage threshold, the control unit is configured to detect a first fault and a second fault in the input signal, wherein the first fault comprises a pair of Short to ground (STG) and secondary faults include leakage in the input signal.

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PUM

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Abstract

The invention relates to intelligent input for a relay device containing a solid state relay. Relays can be used in a variety of applications that use a smaller signal to control a higher power load. Some example loads include motors, stadium lighting and the like. Mechanical relays consist of a coil controlling a magnet that moves electrical contacts. Solid state relays can offer advantages such as lower power consumption and higher reliability than mechanical relays. However, using a solid state relay in a system designed for a mechanical relay can require some significant changes to the system. This disclosure presents a device, a system and technique to operate a solid state relay (SSR) in applications that use mechanical relays while minimizing the need for potentially costly modifications.

Description

technical field [0001] The present disclosure relates to solid state relays and techniques for controlling solid state relays. Background technique [0002] Relays can be used in a variety of applications where smaller signals are used to control higher power loads. Example loads that can be controlled by relays include electric motors, stadium lighting, and various other loads. A mechanical relay consists of a coil that controls a magnet that moves an electrical contact. Solid state relays can offer advantages such as lower power consumption and higher reliability than mechanical relays. However, using a solid state relay in a system designed for mechanical relays may require some significant changes to the system. Contents of the invention [0003] In general, the present disclosure describes devices, systems, and techniques for operating solid state relay (SSR) devices. This disclosure describes techniques and solid state relay devices that can use the same or simil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/51H03K17/567
CPCH03K17/51H03K17/567H03K2017/515H02H3/202H02H3/207H03K17/28H01H47/002H02H9/04
Inventor R·尤贾勒J·皮
Owner INFINEON TECH AG