Abstract: Audio signal processing methods, systems, terminal devices, conference devices, teaching devices, intelligent vehicle-mounted devices, server device, and computer-readable storage media are provided. The method comprises: obtaining current audio signals acquired by a microphone array, the microphone array comprising at least two microphones; generating, according to phase difference information of the current audio signals acquired by the at least two microphones, current sound source spatial distribution information corresponding to the current audio signals; and according to the current sound source spatial distribution information, in combination with the conversion relationship between single speech and overlapping speech learned on the basis of historical audio signals, identifying whether the current audio signals are overlapping speech.

Abstract: A temperature measuring method and apparatus based on creatine chemical exchange saturation transfer (CEST) imaging. The method comprises the following steps: (1) performing creatine CEST imaging on a creatine phantom, and analyzing a chemical shift of creatine relative to water in the creatine phantom; (2) fitting a mathematical relation between the chemical shift of the creatine relative to water and the temperature; and (3) performing CEST imaging on creatine in a sample, and calculating the temperature according to the mathematical relation, fitted in step (2), between the chemical shift of the creatine relative to water and the temperature. In the temperature measuring method, the creatine is taken as an endogenous reference, and highly-spatial-resolution, highly-sensitive, and non-invasive absolute temperature measurement can be implemented by means of temperature dependence of a CEST effect of Cr and water.

Abstract: Backlight module and display device are disclosed. The backlight module includes a light source structure and a light guide plate, which includes a body structure and a wedge-shaped structure disposed on the body structure and located at a side adjacent to the light source structure. The body structure includes a light incident surface of body structure. The wedge-shaped structure includes a bottom surface, a wedge surface and a light incident surface of wedge-shaped structure. The light source structure includes a light source, light emitted by which enters the light guide plate through the light incident surface of body structure and the light incident surface of wedge-shaped structure. In a direction perpendicular to the bottom surface, a ratio of thickness of the body structure to thickness of light-exiting surface of the light source is less than or equal to 88%.

Abstract: The present disclosure discloses a sound detection method. The method includes: obtaining an initial sound signal and a spatial distribution spectrum of the initial sound signal; segmenting the initial sound signal, to obtain a target sound segment, and obtaining a timestamp corresponding to the target sound segment, the target sound segment including a speech of at least one object, and the timestamp being used for indicating a start time of the target sound segment and an end time of the target sound segment; segmenting the spatial distribution spectrum by using the timestamp, to obtain a spatial distribution spectrum segment corresponding to the target sound segment; and inputting the target sound segment and the spatial distribution spectrum segment into a sound detection model, to obtain a first sound detection result, the first sound detection result being used for describing whether sound of multiple objects exists in the initial sound signal.

Abstract: The present disclosure discloses a sound detection method.

Abstract: The present application relates to a safety prevention and control system and control method of a power battery pack for an electric vehicle. The safety prevention and control system of a power battery pack includes a signal acquisition device, a main controller, and a step-by-step prevention and control execution device. The main controller includes a fault diagnosis device, a cell thermal runaway determination device and a battery pack thermal runaway propagation determination device, which are respectively electrically connected to the step-by-step prevention and control execution device to send different control instructions to the step-by-step prevention and control execution device. The step-by-step prevention and control execution device can execute prevention and control actions of different levels according to the different control instructions sent by the fault diagnosis device, the cell thermal runaway determination device and the battery pack thermal runaway propagation determination device.

Abstract: The present application relates to a safety prevention and control system and control method of a power battery pack for an electric vehicle. The safety prevention and control system of a power battery pack includes a signal acquisition device, a main controller, and a step-by-step prevention and control execution device. The main controller includes a fault diagnosis device, a cell thermal runaway determination device and a battery pack thermal runaway propagation determination device, which are respectively electrically connected to the step-by-step prevention and control execution device to send different control instructions to the step-by-step prevention and control execution device. The step-by-step prevention and control execution device can execute prevention and control actions of different levels according to the different control instructions sent by the fault diagnosis device, the cell thermal runaway determination device and the battery pack thermal runaway propagation determination device.

Abstract: An apparatus for treating a fuel is disclosed. The apparatus comprises a channel for fuel to be treated, a photocatalyst situated within the channel so as to be in contact with the fuel passing therethrough, electromagnetic radiation source means for irradiating the catalyst and magnetic field source means for providing a magnetic field to which the fuel is exposed.

Abstract: A novel heat pipe and a cooling system that employs the heat pipe are disclosed. The heat pipe has a configuration in the form of a nail that includes a flattened upper section and an elongated lower, section. The heat pipe may be in the form of nail shape or a continuous bar that includes a flattened upper section and an elongated section. The heat pipe may be employed together with a thermoelectric cooling module and a heat sink to provide a cooling device. The cooling device may be employed with a container to provide a cooling system.