3results about How to "Data fluctuation is small" patented technology

The present application relates to the field of optical detection technology, and more particularly to a multi-probe centering detection method, which drives a standard spherical lens to rotate, and synchronously completes optical data acquisition by means of multiple independent detection light paths; respectively fitting the data collected by each channel to obtain the corresponding spherical center rotation track of each channel; relying on the spherical center track, solving the spherical center difference of each channel relative to the rotation reference axis, and repeatedly performing the calibration process to obtain the measurement standard deviation of each channel; replacing the measured lens and repeating the detection process to obtain the spherical center track and the spherical center difference; combining the measurement standard deviation of each channel, the consistency error of the measured spherical center difference and the track circle fitting residual error to calculate the fusion weight of each light path channel; based on the obtained weight, using the weighted least squares method to fuse the effective spherical center difference data and output the comprehensive spherical center difference of the measured lens. The present application adopts a multi-light path synchronous detection and data weighted fusion scheme, effectively suppresses the random error and system error of a single channel, and improves the overall measurement accuracy of the lens spherical center deviation.

This invention discloses a linearized thickness detection device and method for automotive sound-absorbing cotton, relating to the field of sound-absorbing cotton processing quality inspection technology. The invention includes a transmission component, a displacement guide, a lateral movement mechanism, a micro servo motor, a rotating probe, an auxiliary drive roller, and a driven roller. Through the coordinated movement of the lateral movement mechanism and the rotating probe, the auxiliary drive roller and the driven roller straighten the sound-absorbing cotton. The detection module continuously collects thickness data, which is processed by the PCB motherboard and transmitted to an external terminal. This invention achieves full-range lateral coverage detection of automotive sound-absorbing cotton, reducing missed detections, avoiding detection errors caused by wrinkles or excessive stretching of the sound-absorbing cotton, preventing interference from sound-absorbing cotton lint to the detection module, and improving detection accuracy and efficiency. It is suitable for thickness quality control in the production process of automotive sound-absorbing cotton.

The utility model relates to the technical field of new energy automobile battery management systems, in particular to a new energy automobile BMS temperature monitoring parameter acquisition device. The system comprises a composite monitoring unit, a working condition identification unit and a filtering optimization unit. According to the utility model, the composite monitoring unit uses a surface contact type temperature sensor, an internal penetration type temperature sensor and a non-contact type temperature sensor to carry out multi-dimensional acquisition on battery temperature data, and the working condition identification unit uses a support vector machine to establish an optimal classification hyperplane to classify characteristic data of different working conditions. The current operation condition of the battery is judged, the size of a filtering window is dynamically adjusted according to the working condition, the filtering optimization unit carries out multi-stage amplification and filtering processing on collected temperature data through an amplification filtering circuit, the problem that a traditional single sensor cannot comprehensively reflect the thermal state of the battery is solved, and the integrity and accuracy of the temperature data are improved.