| 摘要 |
A digital display unit (14, 16, 18 or 20) includes a microcontroller (94) to process information received from one or more sensors (30, 32, 40, 42, 54 and 56), a display (96a, 96b, 96c or 96d), and a switch (108, 156 or 180) in communication with the microcontroller so that the microcontroller displays an output on the display that is specific to a type of sensor, which type may be selected from a position sensor, a pressure sensor, and a stroke counter. The digital display unit may be part of a choke control panel (10). The microcontroller and the display may be disposed in an enclosure (74), and an electrical power source (76a and 76b) may be disposed in the enclosure to supply electrical power to the microcontroller and the one or more sensors. A digital hydraulic choke position sensor assembly (30 or 32) and a digital pressure sensor assembly (54 or 56) are also described, which may be used in a system (24) for drilling an oil or gas well. |
