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Series interlock system with integrated ability to identify breached locations

A technology that disconnects the position and connects the ground in series, which is applied in the field of safety interlock system and can solve the problems of increasing installation cost, space weight and time

Active Publication Date: 2013-01-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution has these drawbacks: increased installation cost, space, weight and time, since often many additional lines are required to operate the interlock

Method used

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  • Series interlock system with integrated ability to identify breached locations
  • Series interlock system with integrated ability to identify breached locations
  • Series interlock system with integrated ability to identify breached locations

Examples

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Embodiment Construction

[0017] The following detailed description is merely exemplary in nature and is not intended to limit the invention and its application and uses. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background brief description and the following detailed description.

[0018] In an exemplary embodiment, a vehicle is equipped with a series interlock system and control module having a plurality of interlocks. In the exemplary embodiment, each of the plurality of interlocks has a switch and a resistor in parallel with the switch. When the individual interlock is closed, indicating a safe condition, current flows through the switch, bypassing the shunt resistor and the individual interlock has a low or zero impedance value. When the individual interlocks are open or open, current flows through a resistor with a known resistance value. With multiple interlocks in a series interlock ring, each individual inter...

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PUM

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Abstract

A system is provided for implementing a series interlock loop. An example of the interlock system includes a series interlock loop, a data table, and a control module. The series interlock loop has an overall electrical characteristic. The series interlock loop includes first and second safety interlocks electrically coupled in series. Each interlock includes a switch coupled in parallel with an impedance value. The data table is configured to store values corresponding to the impedance values. The control module is communicatively coupled to the data table and configured to receive an indication of the overall electrical characteristic and to compare the overall electrical characteristic to the values in the data table to thereby identify an open one of the first and second safety interlocks.

Description

technical field [0001] The present invention relates generally to safety interlock systems for motor vehicles. Background technique [0002] In many motor vehicles, interlock systems are provided to restrict access to certain electrical features. For example, many vehicles have high voltage electrical systems that power electric motors or other systems. [0003] Interlock systems typically prevent access to high voltage or other systems by shutting down the system when a potentially unsafe condition is detected. Conventional interlock systems typically use switches connected to access covers or panels at points of access to detect potentially unsafe conditions. Access covers prevent access to high voltages or the like. When the cover is opened, the switch opens to disable high voltage or other electrical conditions. The switch remains closed when the access cover is in place. [0004] Many conventional interlock systems have more than one access point including more tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00B60R16/02
CPCB60L11/1846Y02T90/14B60R16/02Y02T90/163Y04S30/14Y02T10/7088Y02T90/169B60L11/1838Y02T10/7005Y02T90/16Y02T90/128Y02T10/7072B60L53/65Y02T10/70Y02T90/167Y02T90/12
Inventor W·R·考索恩J·E·塔钦斯基
Owner GM GLOBAL TECH OPERATIONS LLC