3results about How to "Good man-machine interface" patented technology

This invention provides an automated testing device for UAV data links, including an industrial control computer, a display, a spectrum analyzer, a programmable DC power source, a programmable adjustable attenuator, a fixed attenuator I, a fixed attenuator II, a power divider I, a power divider II, an RF switch, a shielded box I, and a shielded box II. The software of the industrial control computer includes a system management module and an automated testing module. The advantages of this invention are: it uses general-purpose testing equipment, is based on a computer-automated program, and controls the settings of each testing device via a bus to simulate remote control, telemetry, image data transmission and reception, and bit error rate statistics; it achieves automated testing of core functional performance indicators of UAV data links such as power consumption, transmit power, spectrum, functionality, receiver sensitivity, bit error rate, and latency.

The utility model discloses an automatic performance parameter testing device for a central gulp valve of a mixed-flow water turbine. A servo electric cylinder is fixed on a bottom plate, and a tension sensor is fixed at the upper end of a telescopic rod through an upper disc and a lower disc; the electromagnet is fixed on the tension sensor through the magnetic isolation upper disc and the magnetic isolation bottom disc; the laser distance measuring sensor is fixed on the inner wall of the supporting cylinder through a support and a support, the proximity switch is fixed on the edge of the magnetism isolating upper disc, and the magnet sucker is fixed below the valve disc. The servo electric cylinder, the laser distance measuring sensor, the tension sensor, the proximity switch and the electromagnet penetrate through a wire passing hole through a control cable with a spiral telescopic joint and are connected into a control box with a digital display panel and a power cable. And the gulp valve is fixed on the supporting cylinder through a valve seat. The technical scheme disclosed by the utility model can be widely applied to the field of mixed-flow water turbine center gulp valve parameter and performance testing.

The utility model discloses a high-precision quick-response electro-hydraulic actuator which comprises an oil tank, a plunger pump, a servo motor, a one-way valve, a pressure limiting valve, a hydraulic lock, a three-position four-way electromagnetic valve, an oil cylinder and an electric controller, the plunger pump is driven by the servo motor, an inlet of the plunger pump is connected with the oil tank, and an outlet of the plunger pump is connected with a port P of the three-position four-way electromagnetic valve through an oil inlet pipe; a one-way valve and a flow sensor are connected to the oil inlet pipe in series, a T port of the three-position four-way electromagnetic valve is connected with the oil tank through an oil return pipe, an inlet of the pressure limiting valve is connected to a pipeline between the one-way valve and the plunger pump, an outlet of the pressure limiting valve is connected with the oil return pipe, and an A port and a B port of the three-position four-way electromagnetic valve are connected with two P ports of the hydraulic lock through oil pipes in a one-to-one mode. Two A ports on the hydraulic lock are respectively connected with two cavities of the oil cylinder in a one-to-one mode through pressure oil pipes, and the two pressure oil pipes are respectively connected with a pressure sensor in series and are further provided with a displacement sensor. The electro-hydraulic actuator can achieve high stability, high precision and quick response.