Pressure Filter Remote Control via GPRS for Hazardous Sites
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Solution Overview
Problem
Existing pressure filter control systems are unsafe for operators due to operation in humid environments with caustic chemicals, and they are labor-intensive and technologically outdated, leading to high costs.
Innovation Solution
A remote operation and control system using a GPRS-DIU communication network, industrial Ethernet, and VPN for secure data transmission, allowing the pressure filter to be operated and controlled remotely, eliminating the need for on-site personnel and enhancing the control system's technological capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure filter is operated manually at the scene, then the operator can directly control the filtration process, but the operator is exposed to dangerous humid environments with caustic chemicals
Solution Approach 1:
The patent introduces a remote control system as an intermediary between the operator and the pressure filter. The control system includes a remote terminal connected via GPRS network to the PLC controller at the filter site, allowing operators to control the filtration process from a safe distance while the filter operates in the hazardous environment. This mediator eliminates direct human exposure to caustic chemicals and humid conditions.
2Productivity
If the pressure filter is operated manually at the scene, then real-time control is possible, but labor costs and production costs are high
Solution Approach 1:
The patent replaces manual mechanical operation with an automated electronic control system. The PLC (Programmable Logic Controller) automatically controls the filtration process based on programmed logic, while the GPRS-enabled remote terminal allows monitoring and control without continuous manual intervention. This substitution of manual labor with automated systems reduces both labor costs and production costs while maintaining real-time control capability.
3Adaptability or versatility
If the pressure filter uses a basic control system, then the system is simple, but the control system is not advanced and lacks remote capability
Solution Approach 1:
The patent implements a multi-functional control system where the PLC controller serves multiple purposes: local automated control of the filtration process, data logging, and remote communication via GPRS. The remote terminal can both monitor system status and send control commands, making the system adaptable to various operational scenarios. This universal design provides advanced remote capability while managing complexity through integrated functionality rather than separate dedicated components.
Data Source
Figure 1
AI summary
A remote operation and control system for a pressure filter; a PLC controller (2) in a pressure filter (1) body is connected to the interface of a GPRS-DTU communication network (3); the aerial (4) of the GPRS-DTU communication network (3) is linked to a communication tower (5) via a signal; the communication tower (5) is connected to a GGSN communication interface (6) and an SGSN communication interface (7), forming a GPRS communication network; the GPRS communication network is connected to the wiring port of a router (8); a wire connects to a firewall (9) via the router (8), and enters the wiring port of a switch (10); an industrial Ethernet (11) is configured to connect to the wiring port of the switch (10). The remote operation and control system for a pressure filter achieves unattended operation on the working site of the pressure filter, thus improving the technical level of the control system.