Sandblasting Operator Communication System
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Solution Overview
Problem
In sandblasting operations, communication between the nozzle operator and the pot or machine operator is often difficult due to distance and noise, making direct communication challenging, and existing remote control devices provide limited assistance.
Innovation Solution
A self-contained portable warning and alarm system with independent activation switch buttons near the blasting nozzle and a remotely positioned warning light and audible alarm display, allowing preprogrammed button sequences for effective communication between operators, which can be adapted to existing systems and includes a wireless communication option.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle operator is positioned at a remote distance from the pot operator, then the nozzle operator can safely perform sandblasting operations away from noise and hazards, but direct communication between operators becomes difficult or impossible
Solution Approach 1:
The patent introduces an intermediary communication system consisting of wearable devices with buttons for the nozzle operator and a display unit for the pot operator. This intermediary device transmits signals between the two operators, enabling communication without requiring direct line-of-sight or proximity, thus resolving the contradiction between safe remote positioning and effective communication.
Solution Approach 2:
The patent replaces traditional mechanical communication methods (voice, hand signals) with an electronic signaling system. The nozzle operator's button presses are electronically transmitted to the pot operator's display, substituting physical presence and acoustic communication with an electronic intermediary that functions independently of distance and noise conditions.
2Ease of operation
If a traditional two-position switch signaling system is used, then basic communication is possible, but the system lacks flexibility and cannot support complex operational commands
Solution Approach 1:
The patent segments the communication system into multiple independent buttons on the nozzle operator's wearable device, each corresponding to specific commands (e.g., open pot, close pot, adjust flow). This segmentation allows for diverse operational commands while maintaining simple button-press operation, resolving the contradiction between ease of use and versatility.
Solution Approach 2:
The patent creates a universal communication interface where a single wearable device with multiple buttons can handle various sandblasting operations (opening/closing pot, adjusting abrasive flow, signaling pauses). This multi-functional system replaces multiple specialized switches, providing both simplicity and adaptability across different operational scenarios.
3Reliability
If a dead man switch system is used for control, then basic safety control is maintained, but additional communication signals require separate switches and complex wiring
Solution Approach 1:
The patent merges the dead man switch functionality with additional communication buttons into a single integrated wearable unit. The microcontroller processes multiple button inputs and communicates them through a single wireless or wired connection to the pot operator's display, eliminating the need for separate switches and reducing wiring complexity while maintaining safety control.
Solution Approach 2:
The patent introduces a microcontroller-based intermediary device that receives multiple input signals from buttons on the wearable unit and translates them into standardized control signals. This intermediary processing layer simplifies the interface between the nozzle operator's commands and the pot operator's control system, reducing the need for complex direct wiring for each function.
Data Source
AI summary
An independent safety warning and notification system for sandblasting operations that require an operator of a blasting hose to be remotely positioned to the blasting pot operator. A dedicated activation switch assembly is secured to an existing sandblast hose with a separate dead man switch or alternately with an integrated dead man switch allowing the blast nozzle operator to communicate critical information to the pot operator. A warning notification light display and audible alarm assembly with a remotely positional warning light alarm is selectively secured near the pot operator for notification that a prescribed predetermined action has been requested by the blast nozzle operator or an emergency situation by activation of the switch assembly.