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An Apparatus for Tablets/ Mobile Devices to Operate Remote Terminal Unit via Local Wireless Network Access

IP.com Disclosure Number: IPCOM000243302D
Publication Date: 2015-Sep-18
Document File: 2 page(s) / 77K

Publishing Venue

The IP.com Prior Art Database

Abstract

The technology concerns methods and equipment to enable the local access and collection of well production data without the need to be hard-wired or otherwise physically connected to production equipment or a control system. The technology allows an operator to read measurements and send control commands through a smart tablet or other mobile devices to a Remote Terminal Unit (RTU) or other control systems through a Wi-Fi wireless communication link.

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An Apparatus for Tablets/ Mobile Devices to Operate Remote Terminal Unit via Local Wireless Network Access

Abstract

Brownfield control system infrastructure in oil and gas field limited the ability for operator to maximize well production. SCADA system enables remote operation of control systems. However, due to the d ated technology, operation through SCADA system becomes inefficient and im pairs productivity. Operators desire to be able to locally access well data near well head without having to physically connect to a well head control system e.g. a Remote Terminal Unit (RTU).

The invention enables an operator to read and write data from a tablet to an RTU or other types of control system. The technology system hardware includes an RTU or other types of control system, a local Wi-Fi access point connected to the RTU or other types of control system, and a tablet, laptop or other similar mobile devices that can access the RTU/control system data via the Wi-Fi system. The technology system software will include software on the mobile device allowing communication via standard industrial communication protocols such as Modbus, TCP/IP, OPC, and others. A user-friendly operator interface allows the operator to use a grap hic user in terface to re ad and write data to and from the RTU. Additionally, the RTU and tablet or mobile device may be enabled to allow remote desktop access through the tablet or mobile device.

An operator using the technology system establishes communication between the tablet or mobile device and the Wi-Fi access point. The Wi-Fi acce ss point in the technology system is only connected to the RTU and is not connected to a separate network system. In particular, the list below contains specific hardware and software components.

For hardware, the system contains (as shown in Figure 1)

 An RTU (Remote Terminal Unit) or other control system;
 A local WiFi access point that is physically connected to the RTU directly through its controller or an Ethernet communication card establishing wireless communication either via TCP/IP, Modbus, or via other communication methods such as serial port (RS485, RS232);

 A tablet or mobile device that can access RTU data via WiFi radio.

For software, the system utilizes

 A user software on tab let/ mobile device e nd that enables communication via indu strial communication protocols such as Modbus, TCP/IP, OPC and so on;

 A user friendly operator interface that enables operator to use graphic interface to read and write operation data;

The technology concerns methods and equipment to enable the local access and collection of well production data without the need to be hard-wired or otherwise physically connected to production equipment or a control system. The technology allows an operator to rea...