Hand-Held Tree Injection Device With Real-Time Pressure Sensing
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Solution Overview
Problem
Existing tree injection devices often cause vascular tissue damage due to constant pressure injection, which can impede the distribution of agents, and fail to account for fluctuations in resistance during the injection process, leading to inefficient treatment times.
Innovation Solution
A hand-held electronic device with continuous pressure sensing technology that monitors and adjusts injection pressure in real-time using an onboard CPU, allowing for a variable pressure profile to optimize the injection process and minimize tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If constant pressure injection is used, then injection speed is improved, but vascular tissue damage occurs and agent distribution is impeded
Solution Approach 1:
The patent implements dynamic pressure control by continuously monitoring back pressure during injection and adjusting injection pressure in real-time. The system transitions from static constant pressure to dynamic variable pressure, allowing the injection pressure to fluctuate within a safe range (e.g., 50-150 psi) based on actual tree resistance conditions, thereby preventing vascular tissue damage while maintaining efficient injection speed.
Solution Approach 2:
The patent employs a feedback control mechanism where a pressure sensor continuously monitors back pressure during injection. This back pressure information is fed back to the control system, which then adjusts the injection pressure accordingly. This closed-loop feedback ensures that injection pressure adapts to changing tree resistance conditions, preventing both over-pressure damage and under-pressure inefficiency.
2Loss of time
If high pressure injection is used, then treatment time is reduced, but vascular tissue damage increases
Solution Approach 1:
The system dynamically adjusts injection pressure based on real-time back pressure monitoring. Instead of using fixed high pressure that causes damage, the pressure is continuously optimized to be high enough for efficient injection but never exceeds the tree's tolerance threshold. This dynamic adjustment reduces treatment time while preventing tissue damage.
Solution Approach 2:
The patent changes the pressure parameter from a fixed constant value to a variable range. The injection pressure is allowed to vary within a safe operational range (e.g., 50-150 psi) based on tree resistance conditions. This parameter change enables the system to achieve fast injection speeds when tree resistance is low while automatically reducing pressure when resistance increases, thus preventing damage.
3Device complexity
If constant pressure injection is used, then device simplicity is maintained, but inability to adapt to resistance fluctuations reduces injection efficiency
Solution Approach 1:
The patent incorporates a feedback control system with pressure sensors and control algorithms that monitor and adjust injection parameters in real-time. This feedback mechanism enables the device to adapt to resistance fluctuations automatically, significantly improving injection efficiency compared to simple constant pressure systems, while the added complexity is justified by the substantial performance improvement.
Solution Approach 2:
The system performs self-adjustment by automatically monitoring its own injection conditions through pressure sensors and modifying its operation accordingly. The control system self-regulates injection pressure and flow rate based on real-time feedback, eliminating the need for manual intervention and enabling the device to optimize its own performance adaptively.
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 device ensures efficient and safe injection by maintaining a preprogrammed pressure profile, reducing the risk of vascular tissue damage and optimizing treatment time by dynamically adjusting to changes in resistance, thereby improving the delivery of agents into tree trunks.
Implementation Method 1
an electronic pressure sensor that continually monitors every minute change in pressure
Implementation Method 2
a piston that slides within a cylinder wherein an electronic pressure sensor is located in the piston head
Data Source
AI summary
The invention provides a hand-held electronic device for injecting an agent into a tree with continuous pressure sensing technology for real-time measurements of the pressure within the tree. The pressure measurement information is conveyed to an onboard central processing unit for data collection, analysis and optimization of the speed of injecting the agent into the tree. By continually monitoring the pressure and injection power, the injection pressure can be modified to adapt to back pressure fluctuations. In one embodiment of the invention the agent is injected into the tree under a preprogrammed pressure profile. In another embodiment of the invention the agent is injected into the tree under a variable pressure profile until the fastest injection time is obtained. The invention also provides methods to identify a problem related to the health of the tree by comparing the measured pressure profile resulting from the injection of an agent into an individual tree with the typical pressure profile, stored in a database, for a tree injected under a comparable set of conditions.