3results about How to "Large tolerance range" patented technology

The invention discloses a novel safety belt locking device based on non-Newtonian fluid. The novel safety belt locking device is characterized by mainly comprising a belt containing groove, a bearing, a locking device cover plate, a rotating shaft, a limiting key and a locking device base. The limiting key is composed of a locking hook, a limiting magnet, a spring and a stress flat plate, and the locker base is composed of an outer wall, a liquid storage gap, a locking hole and a threaded hole. The limiting magnet is a permanent magnet and is welded on the limiting key, and the rotating shaft body is of an electromagnet structure. During use, the rotating shaft penetrates through the bearing and a central hole of the locking device cover plate, a connecting pair is arranged in a central notch of the locking device base, a shaft body part of the rotating shaft is connected with the belt containing groove, a safety belt braid is hung on the shaft body of the rotating shaft, the bearing is loaded in the central notch of the locking device cover plate, and an inner ring is welded to the rotating shaft. The locking device cover plate and the locking device base are fixed and sealed through bolts, and shear thickening type non-Newtonian fluid is poured into the base. The shaft body of the rotating shaft can be lengthened during manufacturing so as to be compatible with other traditional safety belt components such as a retractor. The invention can realize the following functions: (1) sensitive locking of the braid; and (2) sensitive locking of the vehicle.

The invention discloses a spectral measurement method, device and system based on a filtering type spectrograph and a medium. The spectrograph comprises an optical filter and a measurement module which are cascaded. The optical filter comprises a directional coupler, at least three micro-ring resonant cavities and phase modulators, the micro-ring resonant cavities are in cross cascade connection through optical waveguides, the phase modulators are arranged on the micro-ring resonant cavities, and the minimum value of the second-order ring length difference between every two adjacent micro-ring resonant cavities and the preset spectrograph scanning bandwidth meet the preset condition. According to the FSR length of each micro-ring resonant cavity, a preset target wavelength reconstruction amount and a preset reconstruction algorithm, determining a phase modulation amount corresponding to each micro-ring resonant cavity, inputting an incident light source into an optical filter, and respectively inputting each determined phase modulation amount into a corresponding phase modulator; and each phase modulator modulates the light passing through the corresponding micro-ring resonant cavity according to each phase modulation quantity, and a spectral information measurement result determined by the measurement module according to the output light of the optical filter is obtained.

This invention provides a canned motor pump rotation detection device and its operating method, belonging to the field of canned motor pump condition monitoring and fault diagnosis technology. The device includes a main control unit, a signal processing unit, a dual-mode output interface, and a power management unit. Phase difference pulse signals are collected by orthogonally arranged eddy current sensors. After amplification and shaping by the signal processing unit, the main control unit determines the pump rotor shaft rotation direction using a digital phase detection algorithm. The device features an LED display and a data communication output interface unit, supports RS-485 communication and wide voltage power supply, and has reverse connection protection. This invention achieves non-contact rotation detection through the cooperation of orthogonal eddy current sensor modules and an iron encoder disk triggering mechanism. The device has a compact structure, rapid response, and is unaffected by shaft deflection and torsional deformation, making it suitable for real-time monitoring and fault diagnosis in various industrial environments.