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Multi-channel fault detection with a single diagnosis output

A multi-channel, channel technology, applied in the direction of error detection/correction, automatic disconnection of emergency protection devices, measuring electricity, etc., can solve the problems of increasing circuit complexity, increasing the number of pins required, and limiting monitoring energy, etc.

Active Publication Date: 2017-10-27
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multiplexers, SPI, and similar methods limit monitoring power and increase circuit complexity, and may increase the required number of pins for a given application's circuit

Method used

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  • Multi-channel fault detection with a single diagnosis output
  • Multi-channel fault detection with a single diagnosis output
  • Multi-channel fault detection with a single diagnosis output

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0056] Example 1. A system comprising a multi-channel device and a processor, the multi-channel device comprising: a diagnostic status pin; a plurality of channels; a plurality of input pins, wherein each channel of the plurality of channels has an associated input pin; a plurality of output pins, wherein each of the plurality of channels has an associated output pin; and the processor is coupled to the diagnostic status pin and is configured to use the diagnostic status pin to determine the plurality of channel Which channel in is the faulty channel.

example 2

[0057] Example 2. The system of example 1, further comprising a processor coupled to at least each respective input pin of the plurality of input pins, the processor configured to: monitor a diagnostic status pin of the multi-channel device; detect the diagnostic status Fault signal on the pin; in response to a fault signal on the diagnostic status pin: For each of the plurality of input pins, transmit a corresponding query input signal on each corresponding input pin, for the corresponding Determining whether the processor continues to detect a fault signal on the diagnostic status pin for a corresponding query input signal on the input pin, responsive to the processor continuing to detect a fault signal on the diagnostic status pin for a corresponding query input signal on the corresponding input pin signal, determining that the corresponding channel is not a faulty channel, and for a corresponding interrogation input pulse on the corresponding input pin, determining that the...

example 3

[0058] Example 3. The system of any combination of examples 1-2, wherein an interrogation input signal on an input pin does not affect a corresponding output signal of a channel associated with that input pin.

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PUM

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Abstract

A multi-channel device with a single diagnosis status pin may be configured to detect if one or more channels has a fault. The multi-channel device, which may operate within a system, can communicate which channel, of a plurality of channels, has the fault using only a single diagnosis status pin and no additional diagnosis control pins. The multi-channel device may output a fault signal on the diagnosis status pin and in response to an interrogation input signal on the same channel as a fault channel indicate to the system which channel is the fault channel.

Description

technical field [0001] The present disclosure relates generally to fault detection in electronic equipment, and more particularly to multi-channel fault detection with a single diagnostic output. Background technique [0002] Many integrated modules (including integrated circuits) use multiple pins to implement diagnostic functions. Some multi-channel products may have diagnostic status for each channel. In some cases, package size may limit the number of available pins. These products can use fewer diagnostic status pins, the disadvantage is that they can only detect that there is a fault somewhere in the device, but not which channel has the fault. Still other products may implement a diagnostic multiplexing method or a Serial Peripheral Interface (SPI). Multiplexers, SPI, and similar approaches can limit monitoring power and increase circuit complexity, and possibly increase the required number of pins for a given application of the circuit. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): G05B23/02G01R31/55
CPCG05B23/0221G01R31/55G06F11/00H02H3/17H04Q1/00G01R31/31715G01R31/2856H02H7/26
Inventor M·拉杜纳D·迈耶A·皮杜蒂
Owner INFINEON TECH AG