Wireless Thickener Monitoring via Signal Conversion
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Solution Overview
Problem
Monitoring process and operational parameters of thickeners and clarifiers, particularly torque in traction-type systems, is challenging due to signal noise and reliability issues with traditional wired connections, and installation difficulties in geographically complex areas hinder the integration of advanced monitoring systems like SCADA.
Innovation Solution
A wireless monitoring system that includes sensors, signal converters, transmitters, and receivers to transmit 4-20 mA analog-coded signals wirelessly, eliminating the need for conduit installation and allowing reliable signal transmission from rotating drives, reducing labor and costs associated with traditional wired setups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional wired connections with conduit are used for signal transmission, then signal transmission is reliable, but installation is difficult and expensive in geographically complex areas
Solution Approach 1:
The patent replaces the mechanical wired connection system (conduit and cables) with a wireless communication system. Sensors transmit signals wirelessly to receivers, eliminating the need for physical conduit installation while maintaining signal transmission functionality. This substitution resolves the contradiction by making installation easy (no conduit needed) while maintaining reliability through wireless communication protocols.
2Ease of operation
If slip rings are used to transmit signals from rotating drives, then signal transmission is achieved, but signal noise and reliability issues occur
Solution Approach 1:
The patent extracts the rotating component (slip ring) from the signal transmission system. Instead of transmitting signals through the rotating drive via slip rings, sensors are positioned to detect signals from the rotating drive and transmit them wirelessly from a stationary position. This elimination of the slip ring component removes the source of signal noise and reliability issues while maintaining the ability to transmit operational data.
3Adaptability or versatility
If analog sensors with 4-20 mA output signals are used, then signal compatibility is maintained, but signal noise interference occurs
Solution Approach 1:
The patent introduces wireless communication as an intermediary between the analog sensors and the receiving systems. The 4-20 mA analog signals from sensors are converted to wireless transmission signals, acting as a mediator that maintains compatibility with existing sensor outputs while eliminating the noise interference associated with long wired connections and slip ring transmissions.
Data Source
AI summary
A thickener/clarifier system includes a thickener/clarifier and one or more sensors measuring respective process or operating parameters of the thickener/clarifier(s) during operation thereof. The sensors are operatively coupled via hard-wired connections and possibly via 4-20 mA converters to one or more wireless transmitters. At least one wireless receiver receives the wireless signal(s) from the transmitter(s). At least one display is hard-wire coupled to the receiver(s) for displaying a magnitude of each process or operating parameter measured.