HVAC Monitoring With PLC-Based Troubleshooting and Preventive Alerts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current HVAC systems lack real-time monitoring and effective troubleshooting capabilities, leading to inefficient maintenance and potential equipment failures.
Innovation Solution
A system that integrates sensors into a programmable logic controller (PLC) to provide real-time data and trigger alarm levels, offering multiple interfaces for monitoring and troubleshooting, including local HMI and integration with DCS or SCADA systems, enabling preventive maintenance and reducing the need for third-party intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time monitoring and troubleshooting capabilities are implemented in HVAC systems, then system reliability and maintenance efficiency are improved, but device complexity and initial cost increase
Solution Approach 1:
The patent combines multiple monitoring functions (temperature, pressure, flow, vibration, electrical parameters) and troubleshooting capabilities into a single integrated control system with centralized processing and display, reducing overall system complexity while improving reliability
Solution Approach 2:
The control system is designed to perform multiple functions including real-time parameter monitoring, alarm generation, troubleshooting guidance, and historical data storage across different HVAC equipment types, making the system universally applicable and reducing the need for multiple separate systems
2Ease of operation
If real-time monitoring with multiple interfaces is provided, then ease of operation and user access are improved, but device complexity increases
Solution Approach 1:
The system provides multiple independent access interfaces (local HMI, remote computer, mobile devices) that can be used separately or together, allowing users to interact with the system at their convenience without requiring changes to the core monitoring functionality
Solution Approach 2:
The patent uses communication networks and standardized protocols as intermediaries between the control system and various user interfaces, allowing easy access to monitoring data without directly complicating the core control architecture
3Measurement precision
If comprehensive sensor integration and data processing are implemented, then measurement precision and detection capability are improved, but device complexity and cost increase
Solution Approach 1:
The patent integrates multiple types of sensors (temperature, pressure, flow, vibration, electrical) and their signal processing functions into a single centralized control system, improving measurement precision while reducing the complexity that would result from separate processing systems for each sensor type
4Productivity
If real-time data collection and alarm triggering are implemented, then productivity and preventive maintenance capability are improved, but use of energy and data processing requirements increase
Solution Approach 1:
The system continuously monitors critical parameters and maintains ready-state processing capabilities without requiring full system activation, allowing rapid response to equipment issues while minimizing energy consumption during normal operation
Solution Approach 2:
The control system automatically processes sensor data, detects anomalies, generates alarms, and provides troubleshooting guidance without requiring constant human intervention or high-energy computing resources, enabling preventive maintenance through self-monitoring capabilities
Data Source
AI summary
A system for monitoring operational conditions of one or more HVAC units, or other machines, with a plurality of sensors for collecting operational information data and transmitting data to a storage device and a processor for analyzing and trending the data and comparing it to a list of pre-determined set points to determine variances from the data set points and identification of one or more pre-determined events and a set of preventive maintenance alerts and/or troubleshooting instructions pertaining to the events and matching of the preventive maintenance alert and/or troubleshooting instructions to at least one of the events for display of the instructions to a user for resolving the event. The system may utilize a programmable logic array with a portable sensing unit, be capable of monitoring multiple parameters, including temperature, pressure, air flow, voltage, current, and humidity and interconnect to remote stations and SCADA systems.