Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Watchdog circuit for car safety parts

A car safety and watchdog technology, applied in the field of watchdog circuits, can solve problems such as hidden safety hazards, stopping, and the lack of effective control of body safety functions, and achieve the effect of solving real-time problems.

Active Publication Date: 2017-12-15
MARELLI AUTOMOBILE ELECTRONIS GUANGZHOU CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is following defective in this circuit: one, if MCU resets, all functions of vehicle body system can be stopped; will recover, especially if the body safety function cannot be effectively controlled, there will be serious safety hazards

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Watchdog circuit for car safety parts
  • Watchdog circuit for car safety parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 As shown, a watchdog circuit of a car safety component in the present invention includes a detected MCU, a watchdog for detecting the MCU and a controlled car safety component. The watchdog is connected with the MCU electrical signal, and the watchdog monitors the feeding signal of the MCU, and sends a reset signal to the MCU after losing the feeding signal to make the MCU return to a normal working state. The watchdog includes a monitoring restart unit and a control takeover unit. The MCU is connected in series between the signal input end of the body hardware and the control signal input end of the automotive safety components. The characteristic structure is that the signal input end of the watchdog control takeover unit is connected to the signal input end of the vehicle body hardware, and the signal output end is connected to the control signal input end of the automobile safety component. When the dog feeding signal is lost, the body safety func...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a watchdog circuit for car safety parts. An MCU is connected between a signal input end of a car body hardware and a signal input end of the car safety parts in a concatenated mode; a dog-feeding signal output end of the MCU is connected with a dog-feeding signal input end of a watchdog, a reset signal input end of the MCU is connected with a reset signal output end of the watchdog; a signal input end of the watchdog is connected with the signal input end of the car body hardware, and a signal output end of the watchdog is connected with the signal input end of the car safety parts; the watchdog passes the input signal of the input end of the car body hardware signal to the signal input end of the car safety parts after the dog-feeding signal of the dog-feeding signal input end is lost by the watchdog. The advantage is that, when the MCU is reset because of an operation abnormality, related car body safety functions can continue to run without being affected; the real-time, accuracy, controllability and persistency performances of the car body safety function are effectively achieved and are not neglected because of the reset of the MCU, and the car body control is safer and more reliable.

Description

technical field [0001] The invention relates to a watchdog circuit, in particular to a watchdog circuit of an automobile safety component. Background technique [0002] In the current body electronic watchdog circuit design, most of them use external control circuits to reset the MCU when the microcontroller MCU is working abnormally, so that the system can work again. But there is following defective in this circuit: one, if MCU resets, all functions of vehicle body system can be stopped; It will recover, especially if the safety function of the body cannot be effectively controlled, which will cause serious safety hazards. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a watchdog circuit of an automobile safety component. [0004] A watchdog circuit for automotive safety components according to the present invention includes an MCU, a watchdog, and an automotive safety compo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065Y02T10/40
Inventor 江凯敏
Owner MARELLI AUTOMOBILE ELECTRONIS GUANGZHOU CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com