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US 10,487,641 B2Granted
Wireless emergency stop
AssigneeSchlumberger Technology Corporation
InventorsShunfeng Zheng, Joergen K. Johnsen
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Abstract
Apparatus and methods for wireless emergency stop of automated machines. A method may include inputting into an electrical control system association information indicative of which one or more of a plurality of electronically controlled automated machines at a worksite are to be associated with a wireless communicator, and operating the wireless communicator to cause the one or more associated machines to stop operating.
Claims20
A system comprising:
- a wireless communicator to be worn by an ambulatory human at a wellsite, wherein the wireless communicator is operable to transmit a wireless signal;
- a wireless access point located at the wellsite and operable to:
- receive the wireless signal;
- and
- output an electrical signal based on the received wireless signal;
- and
- a control system located at the wellsite and comprising a processor and a memory storing computer program code, wherein the control system is operable to:
- electrically communicate with a plurality of electronically controlled machines collectively operable for construction of an oil and/or gas well at the wellsite;
- associate one of the machines with the wireless communicator;
- receive the electrical signal;
- and
- cause the associated machine to stop operating based on receipt of the electrical signal;
- wherein the control system comprises a visual output device and is operable to cause the visual output device to display a visual indication of presence of the human near the associated machine.
10 more elements
Dependencies are inferred from the claim text.