Nerve Stimulator Boost Circuit With Dynamic Voltage Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing nerve stimulators face inefficiencies due to the limited voltage supply from battery-powered devices, leading to energy wastage when the supply voltage exceeds the required stimulus voltage.
Innovation Solution
A stimulation source generation circuit comprising a power module, a boosting module, and an adjustment module, where the boosting module uses a charge and discharge branch with MOS tubes and an inductor to boost the input voltage, and the adjustment module controls the operating frequency based on the stimulation source magnitude to maintain an appropriate output range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a boost circuit is used to increase the voltage output range, then the stimulation magnitude can be increased, but energy wastage increases when supply voltage exceeds required stimulus voltage
Solution Approach 1:
The patent implements dynamic voltage adjustment by controlling the switching frequency of the boost circuit based on the actual stimulation requirements. The control module adjusts the duty cycle of the switching transistor, dynamically matching the output voltage to the required stimulus magnitude, thereby avoiding energy wastage from excessive voltage output while maintaining the ability to provide high voltage when needed.
2Power
If the supply voltage is set much greater than the required stimulus voltage to ensure sufficient power, then power availability is improved, but energy efficiency deteriorates
Solution Approach 1:
The patent employs a feedback control mechanism where the control module monitors the actual stimulation requirements and adjusts the boost circuit operation accordingly. By using feedback from the stimulation demand, the system optimizes the balance between power availability and energy efficiency, ensuring sufficient power is provided only when and to the extent it is needed, rather than continuously operating at maximum capacity.
3Device complexity
If a fixed voltage supply is used from the battery, then device simplicity is maintained, but adaptability to different stimulation requirements is reduced
Solution Approach 1:
The patent changes the key parameter of output voltage from a fixed value to a dynamically adjustable parameter. By controlling the switching frequency and duty cycle of the boost circuit, the system can vary the output voltage to match different stimulation requirements while maintaining a simple battery-powered architecture. This parameter adjustment capability provides adaptability without requiring multiple fixed voltage supplies or complex power management circuits.
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
The proposed circuit efficiently generates a stimulation source close to the required stimulus magnitude, minimizing energy wastage and ensuring effective operation of the nerve stimulator.
Implementation Method 1
the boosting module includes a charge branch and a discharge branch, where the charge branch is connected in parallel with two ends of the power module and includes an inductor and a first MOS tube, the inductor is connected to a positive electrode of the power module
Data Source
AI summary
Provided is a stimulation source generation circuit for a nerve stimulator. A power module supplies an input voltage. A boosting module boosts the input voltage and generates a stimulation source. A charge branch of the boosting module includes an inductor and a first MOS tube. A discharge circuit includes a second MOS tube and an output branch for outputting the stimulation source. An adjustment module outputs an operating frequency according to a magnitude of the stimulation source. The adjustment module is further connected to control ends of the first MOS tube and the second MOS tube and adjusts on or off of the first MOS tube and the second MOS tube according to the operating frequency. The first MOS tube and the second MOS tube cannot be turned on at the same time.