Programmable Dynamic Voltage Control Apparatus for Vehicle D/A Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional D/A converter circuits lack precision in dynamic voltage control, especially when converting digital signals to analog signals for vehicle systems, and existing solutions either lack high precision or cannot rapidly perform dynamic voltage control.
Innovation Solution
A programmable dynamic voltage control apparatus that includes an n-bit channel data storage unit, a voltage division unit, and a D/A conversion unit, which uses programmable memories to dynamically control voltage conversion by equally dividing input voltage into multiple steps and mapping selected voltages to applied voltages for precise analog signal generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional D/A converter circuits are used, then the circuit structure is simple, but the conversion precision from digital signal to analog signal is reduced
Solution Approach 1:
The D/A converter circuit is divided into multiple functional modules: voltage generator circuit with multiple impedance elements, current source circuits for compensation, and selector circuit. This segmentation allows each module to perform its specific function optimally, improving overall conversion precision while managing complexity through modular design.
Solution Approach 2:
Current source circuits are introduced as intermediary elements between the voltage generator and output. These current sources compensate for voltage drops across switches and coupling wirings by providing additional control currents, thereby maintaining precision without requiring a complete redesign of the basic converter structure.
2Manufacturing precision
If existing voltage control solutions are used, then high precision voltage division is achieved, but rapid dynamic voltage control cannot be performed
Solution Approach 1:
The circuit employs dynamically controllable switches (such as MOS transistors) that can rapidly change state in response to digital control signals. This dynamic switching capability enables the circuit to quickly select different voltage division ratios and impedance configurations, achieving rapid dynamic voltage control while maintaining precision through the structured voltage division network.
Solution Approach 2:
Multiple voltage division paths and impedance configurations are pre-configured in the circuit architecture. When a control signal is received, the selector circuit immediately activates the pre-configured path corresponding to the desired voltage ratio, eliminating the need for real-time calculation or adjustment and enabling rapid response.
3Manufacturing precision
If resistors are added in series according to bit number, then voltage division is achieved, but voltage difference cannot be equally divided and precision is reduced
Solution Approach 1:
The circuit uses programmable impedance elements whose resistance values can be dynamically changed based on control signals. This allows the voltage division ratio to be precisely adjusted by changing impedance parameters rather than relying on fixed resistor values, achieving equal voltage division while reducing the need for multiple fixed resistor configurations.
Solution Approach 2:
The voltage generator circuit is designed with universal impedance elements that can serve multiple functions: voltage division, current generation, and dynamic ratio adjustment. This multi-functionality allows the same circuit structure to achieve precise equal voltage division across different operating conditions without requiring separate dedicated circuits for each function.
Data Source
AI summary
The present invention relates to a programmable dynamic voltage control apparatus, and more particularly, to a programmable dynamic voltage control apparatus which is capable of dynamically controlling voltage conversion of an output unit using data set in programmable memories, when various pieces of information sensed by a variety of sensors mounted in a vehicle are converted into electrical signals and then transmitted.