Abstract: A fire measuring device for electric vehicles in a garage includes a fire parameter acquisition device for collecting fire parameters during the fire evolution process of electric vehicles in the garage, a fire monitoring device for dynamically recording the combustion process, a computer, a charging pile, and a water gun fire extinguishing mechanism. The fire monitoring device communicates with the computer. The fire parameters include heat release rate, temperature, radiation, released gas, and electric vehicle mass change. The invention adopts a fire measuring device for electric vehicles in the garage with the above structure. By measuring the parameters such as heat release rate, temperature, radiation, and released gas type during the firing process, the firing mechanism of the electric vehicle stored in the garage is further analyzed and studied to provide basic data for the technical development of electric vehicle fire safety and provide experimental guidance for personnel training.

Abstract: According to a source node and a destination node of each data packet p in a given data packet set required to be transmitted by the wireless vehicular network, the joint scheduling based wireless vehicular network routing algorithm determines overall transmission performance of the wireless vehicular network and a transmission latency and transmission cost of the data packets, and determines an optimal transmission strategy. A multi-order Markov chain is used to model position change processes of vehicle nodes, and a next moment and several moments in the future are predicted and estimated under the condition that positions at previous several moments are given. On the basis of position actual values and predicted estimated values of the vehicle nodes, the optimal transmission strategy is combined to achieve data routing in the wireless vehicular network. The data-aware routing method is mainly used for data communication of a vehicular ad hoc network.

Abstract: A vibration damping component, comprising a hydraulic cylinder and a hydraulic motor; The hydraulic oil cylinder comprises an oil storage cylinder and a working cylinder, wherein the working cylinder is internally provided with a first piston piece and is divided into an expansion cavity and a contraction cavity by means of the first piston piece; the expansion connects the oil storage cylinder by means of a first one-way oil discharge; the contraction connects the oil storage cylinder by means of a second one-way oil discharge; the oil storage cylinder is provided thereon with an oil outlet hole; an input end of the hydraulic motor is connected to the oil outlet hole; and an output end of the hydraulic motor is in communication respectively with the expansion by means of a first one-way oil return pipe and with the contraction by means of a second one-way oil return pipe.

Abstract: A somatosensory electronic puzzle comprises a puzzle base and puzzle blocks. The puzzle blocks are detachably connected to the puzzle base. The puzzle base comprises a bottom plate and a frame. The frame is disposed with a control module and a storage module for storing a graphic code, and an outer surface of the frame is disposed with a function selection switch. The function selection switch is connected to an input terminal of the control module. The puzzle blocks comprise a combination of one or more light-emitting puzzle blocks, a wind generating puzzle block, a smell generating puzzle block, a rain generating puzzle block, a tree puzzle block, a lightning and thunder generating puzzle block, a person puzzle block, or an animal puzzle block. The one or more light-emitting puzzle blocks comprise a puzzle block comprising a constant color and a puzzle block comprising variable colors.

Abstract: A robust data transmission method in Internet of Things. Allocation information of a first time-frequency resource set and a description of a first transmission mode are sent by a base station to a first terminal, and a second time-frequency resource set is allocated by the base station to a second terminal. The first time-frequency resource set includes an overlapping resource set and a non-empty third time-frequency resource set. A second transmission mode of the first data packet is determined by the base station according to a continuity in time of resources in the third time-frequency resource set. A description of the overlapping resource set is sent by the base station to the first terminal. The second transmission method of the first data packet is confirmed by the first terminal, and the first data packet is received by the first terminal according to the first transmission mode and/or the second transmission mode.

Abstract: The present disclosure discloses the wireless virtual mouse. The wireless virtual mouse comprises a head-mounted device and a wireless virtual mouse body. The wireless virtual mouse body comprises a head motion detection module, an eyelid blinking detection module, a communication module, and a power supply module. The head motion detection module collects relative changes of head position through an aerial attitude sensor. A wireless transceiver of the communication module sends signals generated based upon the relative changes of the head position to a computer, and a cursor on a screen of the computer changes synchronously based upon the signals. The eyelid blinking detection module collects a movement distance and a movement duration of an eyelid through a photoelectric motion sensor, and the wireless transceiver sends change signals generated based upon the movement distance and the movement duration to the computer.

Abstract: The present disclosure discloses a call system for a patient. The call system for the patient comprises a head-mounted device, a head motion detection module, an eyelid blinking detection module, a patient display screen, and a nurse station display screen. The head motion detection module collects relative changes of a head position through an aerial attitude sensor. The eyelid blinking detection module collects a movement distance and a movement duration of an eyelid through a photoelectric motion sensor. When the movement distance of the eyelid reaches a preset distance and the movement duration of the eyelid is longer than a preset duration, a confirmation command is generated to select one of multiple call services in a scroll menu, and the one of the multiple call services selected by the patient is sent to the nurse station display screen by a wired network or a wireless network.

Abstract: The present invention provides a method and device for on-line detection of the salinity of seawater. A sweep frequency synchronous signal controls a sweep frequency laser light source such that the wavelength of a frequency modulation light wave output by the sweep frequency laser light source is a periodic saw-tooth wave signal. The frequency modulation light wave is divided into two beams, respectively transmitted to a refractive index probe and a temperature probe in seawater. The refractive index probe is an interference instrument structure, and the frequency value of an interference light intensity signal fed back by the refractive index probe is related to the refractive index of seawater. The refractive index of seawater is calculated by performing discrete Fourier transformation on the interference light intensity signal.

Abstract: A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.

Abstract: The present invention provides a method and device for on-line detection of the salinity of seawater. A sweep frequency synchronous signal controls a sweep frequency laser light source such that the wavelength of a frequency modulation light wave output by the sweep frequency laser light source is a periodic saw-tooth wave signal. The frequency modulation light wave is divided into two beams, respectively transmitted to a refractive index probe and a temperature probe in seawater. The refractive index probe is an interference instrument structure, and the frequency value of an interference light intensity signal fed back by the refractive index probe is related to the refractive index of seawater. The refractive index of seawater is calculated by performing discrete Fourier transformation on the interference light intensity signal.

Abstract: The invention provides a red fluorescent material of which the chemical formula is (Li1?a?bMIaMII2b)2+m(Gd1?x?yEuxLny)4?2b(MoO4)7?c?z(WO4)c(A)Z. The invention further provides a preparation method of the red fluorescent material, and an electric light source prepared from the red fluorescent material and a preparation method of the electric light source. The invention has the beneficial effect that the red fluorescent material uses Eu3+ ions as the main activator; under the excitation of near ultraviolet light or blue light emitted by a semiconductor LED chip, the red fluorescent material has high light conversion efficiency, and emits light in a mode of red sharp lines of characteristic 4f electron-configuration 5D0?>7F2 energy level transition of Eu3+; and the red fluorescent material has high color purity, high emissive power and stable performance.