Multi-Use Horn Circuit Control via Bus System
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Solution Overview
Problem
The integration of multiple horns in vehicles results in a complex circuit and increased costs due to varying sound frequency, spectrum, and pressure level requirements for different horn functions.
Innovation Solution
A circuit and method for controlling a multi-use horn using a bus system, comprising a bus signal receiving and transmitting unit, a control unit, a horn sounding unit, and a power amplification unit, connected to a vehicle-mounted computer controller, which generates and amplifies horn sounding signals to meet diverse requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple horns are integrated in vehicles to meet different sounding requirements, then the versatility and functional requirements are improved, but the circuit complexity and cost increase
Solution Approach 1:
The patent implements a single horn device that can perform multiple functions by responding to different control signals from the vehicle-mounted computer controller. The horn can produce different sound frequencies, spectra, and pressure levels based on the control instructions received through the bus, thereby replacing multiple specialized horns with one multi-functional device. This resolves the contradiction by achieving versatility through software/control signal differentiation rather than hardware multiplication.
2Adaptability or versatility
If multiple horns are integrated in vehicles to meet different sounding requirements, then the versatility and functional requirements are improved, but the cost increases
Solution Approach 1:
The patent reduces cost by implementing a single horn device that can perform multiple functions through different control signals. Instead of manufacturing and installing multiple specialized horns, the system uses one horn controlled by a microcontroller that generates appropriate sound characteristics based on the required function (whistle horn, alarm horn, back-up horn, etc.). This eliminates the need for multiple horn units, reducing manufacturing, installation, and maintenance costs while maintaining full functional versatility.
3Device complexity
If a single horn is used to meet multiple sounding requirements, then the circuit complexity is reduced, but the control precision and signal differentiation requirements increase
Solution Approach 1:
The patent introduces a vehicle-mounted computer controller as an intermediary between the driver's input and the horn actuator. The controller receives control instructions through the bus, decodes them to determine the required horn function, and generates precise control signals with specific frequencies, duty cycles, and patterns. This intermediary ensures accurate signal differentiation and control precision, resolving the contradiction by using software-based control logic to achieve precise differentiation without requiring complex hardware circuitry.
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
Simplifies the vehicle circuit and reduces costs by allowing a single bus system to control multiple horns, meeting various sounding requirements while maintaining safety and convenience.
Implementation Method 1
the horn sounding unit is specifically a piezoelectric horn or an electromagnetic horn
Implementation Method 2
the horn sounding unit is specifically a piezoelectric horn or an electromagnetic horn
Data Source
AI summary
A method and circuit for controlling a multi-use horn by a bus are disclosed. The circuit comprises a bus signal receiving and transmitting unit used for receiving and transmitting a horn control instruction from a vehicle-mounted computer controller by the bus, a control unit used for generating a horn sounding signal adapting to a current scene according to the horn control instruction, and a horn sounding unit used for making sounds according to the horn sounding signal. By adoption of the method and circuit, the horn is connected to the vehicle-mounted computer controller by the bus and is controlled by the vehicle-mounted computer controller to make sounds, and thus, sound requirements for various horns for different uses on vehicles and engineering machines are met.