3results about How to "Strong anti-electromagnetic interference ability" patented technology

The present application relates to the technical field of tactile sensing, in particular to a six-dimensional force tactile sensor based on mode interference fiber structure and a preparation method thereof. The six-dimensional force tactile sensor comprises a rigid substrate, a flexible elastomer arranged on the substrate, and a sensing group arranged in the flexible elastomer. The sensing group is composed of at least three mode interference fibers uniformly arranged around the center of the sensing area. One end of the fiber extends from the bottom to the top of the flexible elastomer. By measuring the change of the light wave interference of each fiber, combining the temperature compensation of the reference fiber and the sensitivity matrix obtained by calibration, the six-dimensional force and torque vector is calculated by using the regularization least square method. The embodiment can solve the shortcomings of the six-dimensional force sensor in terms of electromagnetic interference resistance, flexible integration and miniaturization, and improve the multi-dimensional force demodulation accuracy and stability.

The application discloses a distributed optical fiber pressure sensing probe, a monitoring system and a monitoring method, the probe comprising a distributed optical fiber and a base structure, the base structure comprising a flexible member and a hard layer, the flexible member being arranged inside the distributed optical fiber, the flexible member being used for off-axis bending deformation under the action of external normal load, so that the distributed optical fiber generates axial strain, and the hard layer being coated on the outer periphery of the distributed optical fiber to protect the distributed optical fiber and reduce the off-axis bending deformation amount, and aims to solve the technical problem that the pressure detection device in the prior art has insufficient adaptability to complex application scenarios.

The invention provides a frequency-modulated continuous wave laser radar target information optical domain resolving system, which belongs to the technical field of laser radars, and comprises a signal generation unit used for generating a frequency mixing signal containing target distance and speed information; the optical loading unit is used for loading the frequency mixing signal to a first optical carrier to obtain a modulated optical signal; the optical frequency shift loop is used for performing fixed frequency shift and fixed duration delay on the modulated optical signal to obtain an optical pulse sequence; and the signal processing unit is used for detecting the time interval between the carrier wave and the sideband in the optical pulse sequence and resolving the target distance and speed according to the fixed frequency, the fixed time length and the time interval. According to the invention, the frequency mixing signal of the laser radar is processed through the optical Fourier transform technology, so that the calculation of the target distance and speed is realized, the processing delay of an all-optical calculation mode is lower, and the anti-electromagnetic interference capability is higher.