Vehicle Electrostatic Discharge Circuit with Conductive Surfaces
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Solution Overview
Problem
Occupants of vehicles often experience electrostatic shocks when entering or exiting due to charge differences between themselves and the vehicle, leading to discomfort, damage to electronics, and potential fires in flammable environments.
Innovation Solution
An electrostatic shock reducing system with conductive surfaces connected to a discharge circuit that slowly discharges users to ground, utilizing conductive materials on vehicle surfaces like seats, door handles, and steering wheels, and incorporating resistor arrays and active components to manage the discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a person exits or enters a vehicle, then the person may be subject to an electrostatic shock due to charge differences, but this causes discomfort, damage to electronics, and potential fires
Solution Approach 1:
A conductive surface is introduced as an intermediary element between the occupant and ground. This conductive surface is connected to ground through a discharge circuit that controls the discharge rate, mediating the electrostatic discharge process to prevent harmful shocks while allowing safe charge dissipation.
Solution Approach 2:
The harmful electrostatic charge that would normally cause shocks is converted into a beneficial controlled discharge process. The discharge circuit transforms the potentially harmful rapid discharge into a safe, controlled process that dissipates charge gradually, turning the harmful electrostatic energy into a safe discharge mechanism.
2Object-affected harmful factors
If static guard sprays are applied to vehicle surfaces, then electrostatic shocks can be avoided, but this requires ongoing maintenance and application effort
Solution Approach 1:
The conductive surface with discharge circuit provides self-service electrostatic protection. Once installed, the system automatically dissipates electrostatic charges without requiring ongoing application of sprays or manual intervention. The discharge circuit continuously monitors and manages charge levels, making the protection self-maintaining.
Solution Approach 2:
The mechanical application process of static guard sprays is replaced with an electrical/electronic discharge circuit system. Instead of manually applying and reapplying protective sprays, the patent uses an automated electrical discharge mechanism that provides continuous protection without mechanical intervention.
3Object-affected harmful factors
If occupants place their hands on the outer chassis to discharge, then electrostatic shocks can be avoided, but this requires manual action and user awareness
Solution Approach 1:
The discharge system operates automatically without requiring user action. The conductive surface and discharge circuit continuously monitor and dissipate charges from occupants automatically, eliminating the need for users to manually touch the chassis or remember to discharge.
Solution Approach 2:
The discharge circuit is pre-configured and continuously ready to discharge charges before the occupant needs to exit or interact with external conductors. The system proactively manages charge levels rather than waiting for the occupant to take action.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents sudden electrostatic shocks, reducing discomfort and the risk of damage to electronics and fires by safely dissipating static charges, eliminating the need for preventive measures like static guard sprays and manual grounding.
Implementation Method 1
a discharge circuit connected between ground and the conductive surface. The discharge circuit is configured to slowly discharge the user to the ground when the user contacts the conductive surface
Implementation Method 2
at least one of the plurality of surfaces being made of the conductive material so as to form a conductive surface
Implementation Method 3
The discharge circuit further comprises a resistor array with dissipative material and/or active components
Data Source
AI summary
An electrostatic shock reduction system for a vehicle. At least one surface of the interior or exterior of the vehicle which a user touches includes a conductive material and forms a conductive surface. A discharge circuit is connected to the conductive surface. The discharge surface is configured to slowly discharge the user when the user contacts the conductive surface so as to prevent an electrostatic shock to the user or an object approached by the user.