摘要:
A support structure is provided that can comprise a central support member and leveling devices arranged in a deployed configuration where the leveling devices are radially offset from the central support member. In one embodiment of the support structure, each of the leveling devices can comprise an actuator assembly for fine positioning of a support plane of the support structure. The actuator assembly can communicate with a control system, and in one example the control system is operatively configured to monitor the position of the support plane, providing feedback in the form of a control that operates the actuator to adjust the orientation of the support plane.
摘要:
Some embodiments of a shutoff valve system for a fluid flow system can include a plug assembly that is biased to adjust from a first position in which the fluid flow path is open to a second position in which the fluid flow path is closed. The plug assembly may automatically adjust from the first position to the second position in response to a downstream pressure condition.
摘要:
A flexible chemiresistor (CR) sensor for sensing a molecule of interest in a fluid (liquid or gas) is provided. The flexible CR sensor comprises a flexible chemiresistor (CR) module. The flexible CR module comprises a flexible substrate such polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polyimide (PI), and a thin film nanoparticle assembly assembled on the flexible substrate. The thin film nanoparticle assembly comprises metal or metal alloy core, ligand-capped nanoparticles and molecular linkers connecting the nanoparticles. The flexible CR sensor and an intelligent pattern recognition engine can be incorporated in a handheld device that can detect a molecule of interest in a fluid (e.g., a liquid or gas) accurately, rapidly, and without false positives. Any sensing array nanomaterial, pattern recognition, and compact/or electronic hardware can be integrated to achieve a desired detection limit and response speed.
摘要:
This disclosure describes embodiments of a contactless sensing system for controlling operation of a remote device. The sensing system can comprise an actuator and a sensing device, which is responsive to a field the actuator emits. An end user can move the actuator relative to the sensing device to generate an output that reflects a device command that modifies operation of the remote device. In one example, the sensing device comprises an array of sensing elements. The field causes a change in operating parameters in the sensing elements, which the sensing device can identify and associate with the device command. The sensing device can also recognize combinations of one or more of the sensing elements that exhibit changes in the operating parameters to provide a robust control mechanism for the remote device.
摘要:
This disclosure describes embodiments of systems and methods that can identify and image leaks and spills while simultaneously viewing the unchanging background. In one embodiment, the system includes an image capture device and an image processing device, which receives a first image frame and a second image frame from the image capture device. The image processing device can identify a region of variation in the second image frame that corresponds to a change in a scene parameter (e.g., temperature) as between the first image frame and the second image frame. These embodiments provide a normal dynamic range thermal image that can be colorized to identify the leak or spill as the leak or spill develops over time. The systems and methods can minimize false alarms, addressing potential issues that arise in connection with meteorological events (e.g., precipitation), noise sources, and relative motion between the image capture device and the scene.
摘要:
A digital pressure transducer includes a sensor, a memory component and a microprocessor. A correction algorithm and set of correction coefficients are provided and stored in the memory. An application applies the correction coefficients to convert digitized values to pressure values. The transducer may include a read/write port adapted to communicate with a computer terminal; and at least one read-only port adapted to communicate with a host device. A method of calibrating a digital pressure transducer includes storing a correction algorithm and correction coefficients in the digital pressure transducer separate from a host device.
摘要:
A locking mechanism for a stop flange is provided with a screw having a head with at least one circumferential channel, and a screw gasket disposed on the at least one circumferential channel. A bushing receives the head in a cavity that forms a housing for the head and screw gasket. The bushing may be provided with a lip that engages a shoulder on a radial bore in a stop flange.