Stop Lamp Drive Apparatus Using Electronic Switching

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Solution Overview

Problem

The existing stop lamp drive apparatuses rely on complex circuits and multiple mechanical contact relays, leading to increased costs, reduced durability, and reliability issues due to complicated wiring configurations and the likelihood of malfunctions.

Innovation Solution

A simplified stop lamp drive apparatus using a stop signal module with a semiconductor switch and switch driving circuit unit, directly connecting the battery, stop lamp switch, and external controllers, replacing the need for multiple mechanical contact relays and complex wiring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple mechanical contact relays are used to control the stop lamp according to various braking systems, then the stop lamp can be controlled by multiple braking systems (ESS, DBC, HAC), but the circuit configuration becomes complicated and the reliability decreases

Engineering Contradiction:

Improvecontrol by multiple braking systemsVSAvoidreliability of stop lamp control

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines multiple relay control functions into a single electronic control unit that receives signals from multiple braking systems (ESS, DBC, HAC) and controls the stop lamp through one electronic switch. This merging of multiple mechanical relays into one electronic control system simplifies the circuit configuration and improves reliability by eliminating the complexity and potential failure points of multiple mechanical contact relays.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces mechanical contact relays with an electronic control unit that uses electronic switches (such as transistors or MOSFETs) to control the stop lamp. This substitution eliminates the mechanical moving parts and contact points that are prone to wear and failure, thereby improving reliability while maintaining the ability to respond to multiple braking system signals.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If multiple mechanical contact relays are used in the stop lamp drive apparatus, then the stop lamp can be controlled by various braking systems, but the cost increases and durability decreases

Engineering Contradiction:

Improvecontrol by various braking systemsVSAvoiddurability of relay components

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of stationary object

Solution Approach 1:

The patent replaces mechanical contact relays with solid-state electronic switches controlled by an electronic control unit. This substitution eliminates the mechanical moving parts that are subject to wear, contact erosion, and mechanical failure, thereby significantly improving durability and extending the service life of the stop lamp control system while maintaining compatibility with multiple braking systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the operational parameters from mechanical switching (physical contact and separation) to electronic switching (electrical field control). This parameter change from mechanical to electronic operation eliminates the wear and tear associated with mechanical contacts, improving durability and reducing maintenance requirements while preserving the multi-system control capability.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If a complicated circuit configuration with multiple relays is used, then the stop lamp can be controlled according to multiple braking systems, but the wiring becomes complex and the likelihood of malfunction increases

Engineering Contradiction:

Improvemulti-system braking controlVSAvoidcircuit and wiring complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the functions of multiple relays and their associated wiring into a single integrated electronic control unit. This unit consolidates the signal processing and switching functions for multiple braking systems (ESS, DBC, HAC) into one compact device, dramatically simplifying the wiring harness and reducing the number of connections required while maintaining full multi-system control capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The electronic control unit is designed with universal functionality to handle multiple braking system signals through a single interface. It can process and respond to signals from ESS, DBC, HAC, and other braking systems using unified control logic and a single electronic switch, thereby eliminating the need for separate relay circuits for each system and simplifying the overall wiring configuration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9132821B2Stop lamp drive apparatus

Publication Date: 2015.09.15 HYUNDAI MOTOR CO LTD

AI summary

The present invention provides a stop lamp drive circuit and apparatus. The stop lamp drive apparatus includes a stop lamp switch, a vehicle battery, and a stop signal module. The stop lamp switch outputs a signal according to an operation state of a brake pedal in a vehicle. The vehicle battery supplies operation power of a stop lamp. In the stop signal module, an external controller outputting a signal for on/off control of the stop lamp is connected to an input thereof, and the stop lamp is directly connected to an output thereof.