31results about How to "Interference will not be affected" patented technology

The invention discloses a micro-fluidic chip flow velocity sensor based on micro-nano optical fibers. The micro-fluidic chip flow velocity sensor comprises a micro-fluidic chip, micro-nano optical fibers and a flexible thin film, the thickness of the flexible thin film is smaller than or equal to 100 microns, a refractive index of the flexible thin film is smaller than that of the micro-nano optical fiber, the flexible film coats a fluid channel of the micro-fluidic chip, the flexible film is provided with openings at an inlet and an outlet of the fluid channel respectively, a stretching partof the micro-nano optical fiber stretches across the fluid channel at the to-be-measured position of the fluid channel, and the stretching part of the micro-nano optical fiber, a tapering transition area and non-stretching parts at the two ends are partially embedded in the flexible film. When fluid in the fluid channel flows, the flexible film is bent outwards under pressure, and due to the increase of the bending loss of the micro-nano optical fiber, an output light intensity signal is reduced accordingly, so that flow velocity sensing is realized. According to the invention, multi-point flow velocity detection can be realized, flow velocity detection can be carried out on an existing micro-fluidic chip, and high-sensitivity flow velocity sensing is realized.

The invention relates to the technical field of ball valves, in particular to an integrated ball valve for remote monitoring and control of temperature, pressure and flow. The side wall is provided with a spring installation hole for connecting the other end of the spring, the side of the spring seat away from the spring is connected with a second sealing ring, and the upper end of the valve body is connected with a connecting bracket communicated with the valve body through a mounting flange. A temperature sensor and a flow sensor whose lower end extends into the valve body are installed in the connecting bracket, and a digital display screen that receives signals from the electric actuator, pressure sensor, temperature sensor and flow sensor is installed on the upper end of the connecting bracket. This ball valve is an integrated valve that combines the valve and a single-function detection valve into a whole, integrating remote switch, medium data monitoring, and data feedback, which is convenient to use and saves manufacturing costs.