2results about How to "Reduce measurement" patented technology

This utility model discloses an auxiliary fixture for coordinate measuring machine (CMM) measurement of a motorcycle frame, relating to the field of motorcycle frame inspection technology. It solves the problems of cumbersome operation, low efficiency, large errors, and inconsistent benchmarks in existing measurement methods. The fixture includes a front support mechanism, a rear support mechanism, and a mandrel. The front support mechanism includes a height-adjustable support platform, with height adjustment achieved via a lead screw, guide rail, and rotating handle. The rear support mechanism includes symmetrical left and right support seats connected by a connecting rod. The support seats have V-grooves and are fixed to the measurement platform by adjustable strong magnets. The mandrel passes through a hole at the rear of the frame and is placed in the V-groove. This fixture can accurately position the frame, adapt to the height requirements of different frame types, ensure stable rear positioning, unify the design, manufacturing, and inspection benchmarks, and improve measurement efficiency and accuracy. It is suitable for the inspection of four-wheeled and two-wheeled motorcycle frames.

The invention provides a closed space communication optimization method and related equipment thereof. The method comprises the following steps: correcting a received original acceleration according to a space coordinate system, identifying a motion state to generate space motion data, and carrying out correlation analysis on received power of a reference signal according to the space motion data to obtain an early warning mark of signal attenuation and a time window, and determining a target base station from the neighborhood list according to the early warning mark, performing pre-synchronization processing on the target base station to obtain synchronization information of the target base station, and connecting the terminal to the target base station according to the time window and the synchronization information when the signal power between the terminal and the current base station obtained by the terminal is lower than a power threshold. According to the method, the operation state of the closed space is pre-judged in advance, the adjacent region pre-synchronization and switching request is started before the signal is completely attenuated, the weak signal capturing capability is enhanced, and non-inductive transition and rapid reconstruction of communication are realized.