4results about How to "Detection reliability" patented technology

The invention discloses an HTCC ceramic tube shell structure and a preparation method thereof, the HTCC ceramic tube shell structure comprises a ceramic body, the periphery of the ceramic body is provided with a plurality of groups of internal through holes and side wall semi-circular grooves, the internal through holes and the side wall semi-circular grooves are correspondingly parallel and equal in number, the internal through holes are filled with tungsten conductive wires, and the inner ends of the tungsten conductive wires are electrically connected to bonding fingers arranged in an inner cavity of the ceramic body. The surfaces of the side wall semicircular grooves are covered with tungsten material layers, and the lower ends of the tungsten material layers are connected to the bottom tungsten conducting layer. The internal through hole and the side wall hole which are paired are arranged to realize signal transmission, and due to the addition of the side wall hole, a high-frequency signal forms a differential resonance phenomenon, return loss is effectively improved, and the problem that in a single signal transmission mode, the transmission performance of the signal in a 20GHz frequency range is poor due to impedance mismatching is solved. In addition, the side wall hole is reserved, so that a welding flux wrap angle can be formed in the side wall hole after the chip is welded, and the welding reliability can be detected more visually.

This invention discloses a multi-serial-port 1553B bus detection device, system, and method. The detection device includes a DSP, an FPGA, multiple serial ports, and a 1553B chip. The DSP receives serial data sent by the serial ports and transmits the serial data to the 1553B bus. The FPGA implements the serial port functionality. The multiple serial ports are used to simultaneously perform communication detection on the remote terminal (RT) sub-address of the device under test by setting different transmission frequencies. The serial ports receive user-defined data, which is then transmitted to the 1553B bus by the DSP. The 1553B bus is connected to the 1553B chip. This invention can not only detect whether the 1553B bus communication is normal, but also test the 1553B bus according to the operating frequency and protocol required in actual operation. This invention simulates the real working scenario of the 1553B bus, and can detect not only communication faults but also other problems that may occur when multiple devices work simultaneously.

The present invention relates to a test device for a rotor bearing of a squeeze film damper, comprising: a main shaft driving part, a swing arm, a hanging basket and a test bench, wherein a main shaft motor arranged on a support is fixedly connected to the center of the swing arm through a first coupling, and both ends of the swing arm are movably connected to a hanging basket, and a test bench is arranged in the hanging basket, comprising: a test bench base, a motor support, a test bench motor arranged in the motor support, a bearing support, a wireless sensor and a counterweight plate arranged on one side of the bearing support, and the two bearing supports are both installed with the tested bearings, and the test bench motor is connected to the two tested bearings and the counterweight plate through a second coupling. The present invention can better detect the life and working state of the bearing in a weightless centrifugal state when the drone and other flying maneuvers are in flight by simulating the working state of the bearing in the actual unmanned aerial vehicle flight maneuvering state, combined with the data provided by the wireless sensor, and has the advantages of reliable results, simple structure, easy replacement of accessories, and high efficiency.

The utility model discloses a UPS (Uninterrupted Power Supply) testing device, which comprises a UPS main body and a power supply, and is characterized by further comprising a testing cabinet, at least one testing cavity is arranged in the testing cabinet and is sequentially and uniformly arranged from top to bottom, a partition plate is fixedly connected between every two adjacent testing cavities in the testing cabinet, the upper end of each partition plate is provided with an LED (Light Emitting Diode) bulb, and the lower end of each partition plate is provided with an LED lamp. The UPS main body is electrically connected with at least one power line which is electrically connected with the LED bulbs, the power lines penetrate through the test cabinet, and photosensitive sensors matched with the LED bulbs are arranged in the test cavity in the test cabinet. And a data processing module electrically connected with the photosensitive sensor and a control module electrically connected with the data processing module are arranged in the test cabinet. Compared with the prior art, the UPS inversion state detection device has the advantages that the UPS inversion state detection device can be specially used for detecting the reliability and the power-on efficiency of each power transmission port when the inversion state of the UPS is switched for multiple times.