Abstract: A method and system for characterizing an energy consumption indicator of an electric vehicle (EV) is provided. The method includes performing a cyclic energy consumption test on the EV to acquire a time-speed curve, a time-direct current (DC) energy consumption curve, and a total alternating current (AC) energy consumption in the test cycle. A DC energy consumption rate and an AC energy consumption rate of the EV is determined in each of test sub-cycles. A driving feature is determined in each of the test sub-cycles and a normalized driving feature is determined in each of the test sub-cycles according to the driving feature in each of the test sub-cycles and a base driving feature. A DC energy consumption indicator and an AC energy consumption indicator of the EV are extracted according to DC energy consumption rates, AC energy consumption rates and normalized driving features of the EV in all test sub-cycles.

Abstract: The present invention relates to a system for synchronous monitoring of multi-point displacement and rotation responses of a large structure, and a data analysis method therefor, and belongs to the technical field of structural health monitoring engineering. The system includes a laser sensor and a laser receiver. A laser device is disposed inside the laser sensor and is capable of emitting laser, and laser emitted by the laser device is received by the laser receiver. The displacement and rotation responses at a monitoring point of the large structure drive displacement and pointing direction of laser produced by the laser sensor to change, and the change is received by an internal measurement system of the laser receiver.

Abstract: The disclosure provides a bridge foundation scouring monitoring sensor and a monitoring data analysis method thereof. The disclosed sensor comprises a cover plate, a bottom fixing unit and several standard scouring depth monitoring units fixedly disposed between the cover plate and the bottom fixing unit. Each standard scouring depth monitoring unit comprises an optical fiber vibration string (OFVS) and a supporting frame; the two ends of the OFVS are fixedly connected with the supporting frame; a plurality of polyhedral mass blocks are evenly distributed on the OFBS from top to bottom; and a fiber Bragg grating sensor is disposed at the upper portion of OFBS. The variation of scour depth of bridge foundation induces the change of vibration frequency of the OFVS, which is measured by the fiber Bragg grating sensor. The method of calculating the scour depth from the measured vibration frequency of the OFVS is disclosed.

Abstract: A method and system for characterizing an energy consumption indicator of an electric vehicle (EV) is provided. The method includes performing a cyclic energy consumption test on the EV to acquire a time-speed curve, a time-direct current (DC) energy consumption curve, and a total alternating current (AC) energy consumption in the test cycle. A DC energy consumption rate and an AC energy consumption rate of the EV is determined in each of test sub-cycles. A driving feature is determined in each of the test sub-cycles and a normalized driving feature is determined in each of the test sub-cycles according to the driving feature in each of the test sub-cycles and a base driving feature. A DC energy consumption indicator and an AC energy consumption indicator of the EV are extracted according to DC energy consumption rates, AC energy consumption rates and normalized driving features of the EV in all test sub-cycles.

Abstract: The disclosure provides a bridge foundation scouring monitoring sensor and a monitoring data analysis method thereof, and belongs to the technical field of bridge engineering. The disclosure solves the problem that an existing bridge foundation scouring monitoring technology cannot realize reliable, efficient and high-precision bridge foundation scouring depth monitoring. The bridge foundation scouring monitoring sensor comprises a cover plate, a lower fixing unit and scouring depth monitoring standard units fixedly disposed between the cover plate and the lower fixing unit.

Abstract: The disclosure provides a film packaging device, which introduces a drying layer having no influence on the transmittance and stability of a substrate into a packaging structure of a film barrier layer. The drying layer is in a filled groove structure, has a strong hygroscopic effect and has no influence on light transmission at the same time, and can avoid the damage and influence on the stability of the barrier layer and a functional layer of the device caused by hygroscopic expansion. The introduced drying layer may increase the water and oxygen permeation resistance effect of the barrier layer by 1 or 2 orders of magnitude, thereby having an important action on the improvement of the service life of a flexible device, and the drying layer may also be used in an organic/inorganic multilayer alternating flexible packaging film structure, thereby reducing the number of organic/inorganic alternating layers on the basis of guaranteeing a water and oxygen barrier effect.