BOPI 04 BR/2023 REPERTOIRE NUMERIQUE 37 the verification finger vein images based on a digital elevation model, and extracting register features and verification features; performing translational calibration and rotational calibration on the register features and the verification features, and performing sliding window similarity calculation on an overlap area of the calibrated vein features; and optimizing finger vein feature extraction technical parameters and finger vein feature recognition technical parameters based on calibration parameters and sliding window similarity parameters. The finger vein machine learning recognition device based on terrain concavity-convexity features comprises a normalization module, an image enhancement module, a feature extraction module, a parameter calculation module and an optimization module. The invention improves the capacity and adaptability to images of different qualities of the finger vein recognition technology. Fig. 1 Consulter le mémoire (11) 20920 (51) B60L 15/20 (2018.01) (21) 1202200430 - PCT/IB2021/053370 (22) 23/04/2021 (30) IN n° 202011017557 du 24/04/2020 (54) A system and method for increasing efficiency of an electric vehicle. (72) DAS, Siddhartha (IN) (73) IPLTECH ELECTRIC PRIVATE LIMITED, Flat No. 403, Block A7, Tulip White Sector 69, GURGAON, Haryana 122018 (IN) (74) AFRIC'INTEL CONSULTING, Essos, Immeuble MAH DONG Véronique, 2e étage B.P. 8451, YAOUNDE (CM). (57) A system and method for increasing efficiency of a heavy electric vehicle, particularly, a truck at variable speed wherein a computer area network is designed to control all the parameters of the electric vehicle. An electric vehicle to which the present invention is applicable includes at least one battery for storing electric energy, a battery management system to monitor the individual cell temperature in battery while charging or discharging to protect it as a protection layer , at least one motor for generating a driving force from the electric energy of the battery, a motor control unit to control the operation between the battery and the motor, a vehicle control unit that controls all the signals and monitors the state of the components thereon, a transmission control unit that measures the propeller shaft speed and shifts the gear in the gearbox and a battery cooling system for controlling and monitoring the individual cell temperature .
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