Pressure-Activated Payload Release Mechanism for Unmanned Vehicles
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Solution Overview
Problem
Existing pressure sensing devices for payloads are large, expensive, and inefficient in terms of size, power, and weight, requiring human intervention for setup and operation, making them unsuitable for unmanned vehicles and vessels, and lacking resource efficiency.
Innovation Solution
A pressure-activated release system that deploys payloads without human intervention, utilizing a payload release switch triggered by pressure differentials to move from an unreleased to a released configuration, which can be mechanical or electrical, and is self-contained, compact, and resource-efficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional pressure sensing devices are used, then accurate pressure readings can be obtained, but the devices become large, expensive, and power-consuming
Solution Approach 1:
The patent extracts only the essential pressure-sensing function from complex traditional pressure sensors, eliminating unnecessary components such as microcontrollers, power management circuits, and communication modules. This leaves a simple mechanical pressure-activated switch that performs solely the pressure detection and release function, achieving accurate pressure measurement while dramatically reducing device size, cost, and power consumption.
Solution Approach 2:
The invention employs inexpensive mechanical components (springs, diaphragms, contacts) that can be easily manufactured and replaced. The simple mechanical design allows for cost-effective production while maintaining reliable pressure sensing functionality throughout the device's operational lifetime.
2Extent of automation
If pressure sensing devices with computers are used, then release signals can be generated, but the devices require standby power which limits mission time
Solution Approach 1:
The mechanical pressure-activated switch is self-activating based on pressure differential. When the specified pressure is reached, the pressure differential automatically actuates the switch without requiring external power or control logic. This eliminates standby power requirements while maintaining full automation of the release signal generation function.
3Ease of operation
If pressure sensing devices requiring human intervention are used, then setup and operation can be performed, but they are unfeasible for unmanned vehicles
Solution Approach 1:
The release system is pre-configured with a specified pressure threshold during manufacturing. The mechanical components (spring pre-load, diaphragm geometry) are designed beforehand to activate at the desired pressure point. This preliminary configuration eliminates the need for on-site programming or adjustment, making the system immediately suitable for unmanned vehicles while maintaining ease of operation through simple mechanical setup.
4Adaptability or versatility
If generalized pressure sensing devices are used, then a wide range of pressures can be sensed, but the devices are not optimized for specific payload applications
Solution Approach 1:
The patent optimizes the mechanical properties of components (spring constant, diaphragm area and thickness, piston geometry) to create pressure switches tailored for specific payload applications. By adjusting these local mechanical properties, the system can be precisely calibrated for specific pressure ranges and deployment conditions, improving manufacturing efficiency and performance for each application while maintaining the ability to sense various pressures through component selection.
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
Enables the deployment of payloads in various environments, including surface, aerial, and subsea, with reduced size, cost, and power requirements, suitable for unmanned vehicles, and operates without external power or programming, providing accurate and robust pressure-based releases.
Implementation Method 1
at least one payload release switch configured to be activated, without human intervention, by a pressure differential
Data Source
AI summary
A pressure activated release system and method are disclosed for deployment of surface, aerial and subsea payloads. The system and method include a payload release switch that is activated, without human intervention, by a pressure differential. The system and method also includes a payload release mechanism having an unreleased configuration at pressures below a specified pressure. The release mechanism has a released configuration at pressures above the specified pressure. The switch causes the release mechanism to move from the unreleased configuration to the released configuration.