Capacitor Backup Circuit for Wireless Drug Delivery Battery Life
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Solution Overview
Problem
Drug delivery devices face challenges in extending battery life for wireless communication, particularly when using low power technologies like Bluetooth Low Energy, due to high leakage currents during burst mode data transmission.
Innovation Solution
Incorporating an arrangement of capacitors connected in parallel to the battery connector, specifically ceramic, film, polymer, mica, or tantalum capacitors, to provide a stable power backup for the wireless communication processor, thereby reducing leakage current and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication processor is used for data transmission, then wireless data communication capability is improved, but battery life deteriorates due to high leakage currents during burst mode transmission
Solution Approach 1:
The capacitor is pre-charged during periods when the wireless communication processor is not actively transmitting data. This preliminary energy storage allows the processor to operate during burst mode transmission without immediately drawing from the battery, thereby extending battery life while maintaining wireless communication capability.
Solution Approach 2:
The capacitor acts as an energy buffer or cushion between the battery and the wireless communication processor. It absorbs excess energy when the processor is idle and releases energy during high-demand burst mode transmission, cushioning the battery from the high leakage currents that would otherwise drain it quickly.
2Duration of action of moving object
If capacitors are connected in parallel to battery connector for power backup, then battery life is extended, but device complexity increases
Solution Approach 1:
The capacitor is a relatively simple, inexpensive electronic component with a long operational lifespan. By using this simple component rather than complex power management circuits or rechargeable battery systems, the solution extends battery life while adding minimal complexity to the device.
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
This configuration significantly extends the battery life of drug delivery devices, allowing them to operate for several years without battery replacement while maintaining reliable wireless data communication capabilities.
Implementation Method 1
an arrangement of one or more capacitors, each one of the capacitors being connected in parallel to the positive terminal and the negative terminal of the battery connector and provided for backing up the supplying of the wireless communication processor with electrical energy from a battery connectable to the battery connector
Data Source
AI summary
A wireless data communication circuitry for a drug delivery device is disclosed, wherein the circuitry comprises a wireless communication processor for handling wireless data communication, a battery connector having a positive and a negative terminal, the positive terminal and the negative terminal being connected to respective terminals of the wireless communication processor for supplying the wireless communication processor with electrical energy from a battery connectable to the battery connector, and an arrangement of one or more capacitors, each one of the capacitors being connected in parallel to the positive terminal and the negative terminal of the battery connector and provided for backing up the supplying of the wireless communication processor with electrical energy from the battery connectable to the battery connector.