Abstract: A system for generating a mid-infrared optical frequency comb based on a lithium niobate microcavity includes pumping units, a beam combining unit, a nonlinear frequency conversion unit and a filtering unit. The pumping units are divided into two paths and are configured to provide two paths of pumping light. The beam combining unit is configured to perform beam combination on the two paths of pumping light The nonlinear frequency conversion unit is configured to receive the beam-combined pumping light and undergo a nonlinear four-wave mixing process to generate a broadband optical frequency comb at a mid-infrared waveband. The filtering unit is configured to filter the remaining pumping light and output a mid-infrared optical frequency comb.

Abstract: The present application relates to a battery pack. The battery pack comprises: two or more battery modules, each of the battery modules comprising a plurality of battery cells which are stacked in sequence, wherein each of the battery cells is provided with an explosion-proof valve; the battery pack further comprising a thermal alarm device and a battery management system, wherein the thermal alarm device is arranged corresponding to the explosion-proof valve; the thermal alarm device and the battery management system are connected to form a circuit; and a break of the circuit can be caused when the explosion-proof valve is exploded. The present application provides the thermal alarm device, and when thermal runaway occurs in the battery module, a circuit break is formed between the thermal alarm device and the battery management system, thus the thermal runaway status of the battery pack can be accurately reflected.

Abstract: The present disclosure provides a thermal runaway detection circuit and a method, which is directed to field of batteries. The circuit includes: a sensing module including a terminating resistor; a detection module including a first voltage dividing resistor set and a second voltage dividing resistor set; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data. The thermal runaway detection data includes first sampled data and second sampled data. The technical solutions in the present disclosure can improve safety of the battery pack.

Abstract: An array substrate includes: a base substrate; and a display region in which a signal line is provided and a fanout region provided on the base substrate, the fanout region including a first fanout line layer in which a first fanout line is provided, a second fanout line layer in which a second fanout line is provided, and one or more spacer layers between the first fanout line layer and the second fanout line layer; the signal line is connected to the first fanout line or the second fanout line; and the spacer layers are made of an insulating material; wherein an orthographic projection of the first fanout line on the base substrate and an orthographic projection of the second fanout line on the base substrate are at least partially overlapped with each other. A method of manufacturing an array substrate and a display device are also provided.

Abstract: This application provides a method, an apparatus, a system for detecting battery thermal runaway, and a battery management unit. The method includes: obtaining an output signal of an air pressure sensor located in a battery pack, and obtaining parameter information of the battery pack; determining state information of the air pressure sensor based on the output signal of the air pressure sensor; and generating an alarm signal indicating occurrence of thermal runaway in the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack. In this application, the thermal runaway detection for the battery pack may be implemented by considering parameter information of both the air pressure sensor and the battery pack, improving the reliability of the thermal runaway detection for the battery pack, reducing the probability of false positives and false negatives, and improving driving safety.

Abstract: A device for high-speed real-time sampling of mid-infrared ultrafast light signals includes a time domain amplification unit and a detection unit. The time domain amplification unit is used to perform sampling and time domain amplification on signal light incident to the time domain amplification unit, and convert the signal light of a mid-infrared band into a near-infrared/visible band. The detection unit is used to receive and record information of the to-be-detected signal light processed by the time domain amplification unit to realize high-speed real-time sampling and measurement of the mid-infrared ultrafast light signal. The present disclosure can accurately obtain subpicosecond transient characteristics of the light signal, breaks through the capacity limit to the response rate of a traditional photoelectric detector, the bandwidth of the oscilloscope and the like, and is applicable to femtosecond-level mid-infrared ultrafast light signals.

Abstract: The disclosure relates to the field of display technology. A display substrate motherboard and a method for manufacturing the same are disclosed. In the technical solution provided by the embodiments of the disclosure, by providing via holes formed in the film, instead of small area island-like film patterns, as stitch marks of the display substrate motherboard, a possibility of stitch mark peeling is reduced, thereby further ensuring a reliability and yield of product.

Abstract: A central lock for a folding tent includes a central lock rod, an upper lock plate fixedly disposed at one end of the central lock rod, and a lower lock plate assembly detachably connected to the other end of the central lock rod. An elastic locking member and an unlocking mechanism used to control the elastic locking member to be locked are disposed in the lower lock plate assembly. The elastic locking member includes an arc-shaped portion provided integrally and two horizontal locking rods extending inwards from a gap of the arc-shaped portion. A lower end portion of the central lock rod is provided with a locking groove used in cooperation with the locking rod and a clamping and locking portion located at a lower end of the locking groove.

Abstract: Embodiments of this application disclose an object annotation method and apparatus, a movement control method and apparatus, a device, and a storage medium. The method includes: obtaining a reference image recorded by an image sensor from an environment space, the reference image comprising at least one reference object; obtaining target point cloud data obtained by a three-dimensional space sensor by scanning the environment space, the target point cloud data indicating a three-dimensional space region occupied by a target object in the environment space; determining a target reference object corresponding to the target object from the reference image; determining a projection size of the three-dimensional space region corresponding to the target point cloud data and the three-dimensional space region being projected onto the reference image; and performing three-dimensional annotation on the target reference object in the reference image according to the determined projection size.

Abstract: A folding tent with automatic cornice structure includes a folding tent body including a leg tube and a folding rod assembly that are installed by a leg tube slider and a leg tube top member. The folding tent further includes a cornice assembly including a connection sleeve group that includes a first sliding sleeve, a second sliding sleeve and a third sliding sleeve, and a cornice rod group that includes a cornice rod, a diagonal draw rod and a push rod. The first sliding sleeve is slidably cooperated with the cornice rod and is hingedly cooperated with the push rod. The second sliding sleeve is fixedly cooperated with the push rod, is slidably cooperated with a folding top rod, and is hingedly cooperated with the diagonal draw rod. The third sliding sleeve is fixedly cooperated with the folding top rod, and is hingedly cooperated with a folding diagonal rod.

Abstract: A method for acquiring traffic sign information includes acquiring an image of a scene comprising a traffic sign, the image being obtained by photographing the scene, using a photographing apparatus, acquiring first laser data of the scene, the first laser data being obtained by performing laser scanning on the scene, and the first laser data being of a plurality of first laser points, performing spatial clustering on the plurality of first laser points to obtain candidate point sets, acquiring a spatial distribution feature of respective laser points in each of the candidate point sets, determining at least one point set corresponding to the traffic sign in the candidate point sets, based on the spatial distribution feature, extracting image data of the traffic sign, from the image, using the at least one point set corresponding to the traffic sign, and extracting sign information of the traffic sign, from the image data.

Abstract: A display panel and a display device are disclosed, the display panel includes a plurality of display regions, a peripheral region surrounding the plurality of display regions, a plurality of light-emission control scan driving circuits provided in the peripheral region, a first start signal line, and a second start signal line. The first start signal line is different from the second start signal line, the plurality of display regions include a first display region and a second display region, the plurality of light-emission control scan driving circuits include a first light-emission control scan driving circuit and a second light-emission control scan driving circuit, the first start signal line is configured to provide a first start signal to the first light-emission control scan driving circuit, and the second start signal line is configured to provide a second start signal to the second light-emission control scan driving circuit.

Abstract: This application discloses a method and apparatus for segmenting point cloud data, a storage medium and an electronic device. The method includes: obtaining target point cloud data by scanning target objects around a vehicle with laser lines; clustering the target point cloud data to obtain a plurality of first datasets, wherein feature points represented by point cloud data within each of the plurality of first datasets are fitted on one segmented line segment, each feature point being a point on a respective target object; and combining the plurality of first datasets according to distances between the corresponding plurality of segmented line segments to obtain a plurality of second datasets, wherein each second dataset includes at least one of the plurality of first datasets. This application resolves a technical problem of relatively low efficiency of point cloud segmentation in the related art.

Abstract: The present disclosure belongs to the field of optical measurement, and relates to a high-resolution real-time time-frequency domain measuring device and method for an ultra-short pulse. The technical problem of how to realize high-resolution real-time measurement of time-frequency domain information of the ultra-short pulse and improve the accuracy and reliability of a measurement result is solved. The measuring device includes a light splitting unit used to split signal light to be measured, a time lens unit used to perform time domain amplification on the signal light to be measured, a dispersion Fourier transform unit used to perform Fourier transform on the signal light to be measured, and a detection unit used to receive and detect measured data.

Abstract: Aspects of the disclosure provide a method for processing point cloud data. A plurality of frames of the point cloud data collected from an environment surrounding a pathway are classified into categories based on distances between three-dimensional points of respective frames of the point cloud data and a reference plane of the respective frame of the point cloud data. The distances indicate heights of the three-dimensional points of the plurality of frames of the point cloud data. The frames of the point cloud data of a same one of the categories that matches a pathway object are merged. Candidate point cloud data of three-dimensional points having distances from the pathway that satisfy a predetermined condition is extracted from the merged frames of the point cloud data. Point cloud data conforming to a feature of the pathway object is extracted from the candidate point cloud data.

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a battery assembly, including a plurality of battery cells arranged in an array, wherein each of the battery cells includes a vent; a circuit board, including a plurality of sampling terminals connected to the battery cells and being capable of collecting electrical parameters and/or temperature parameters of the battery cells; and a thermal cable, located between the battery assembly and the circuit board and fixedly coupled to the circuit board, wherein a thermal circuit is formed inside the thermal cable, and the thermal circuit can provide a prompt signal indicating a bursting of the vent of any of the battery cells. When a thermal runaway of any of the battery cells occur, the corresponding vent bursts to heat the thermal cable, and the thermal cable can quickly sense a temperature change.

Abstract: The present disclosure provides a thermal runaway detection circuit and a method, which is directed to field of batteries. The circuit includes: a sensing module including a terminating resistor; a detection module including a first voltage dividing resistor set and a second voltage dividing resistor set; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data. The thermal runaway detection data includes first sampled data and second sampled data. The technical solutions in the present disclosure can improve safety of the battery pack.

Abstract: The disclosure provides a thermal runaway detection circuit and method, and relates to batteries. The thermal runaway detection circuit includes: a sensing module including a sensing cable; a detection module connected to the sensing cable and including at least one set of voltage dividing resistors; a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data, wherein the thermal runaway detection data includes battery pack data and sampled data collected from sampling points, and the sampling points are disposed between the two connected voltage dividing resistor sets. The technical solutions in the present disclosure can improve safety of the battery pack.

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a plurality of secondary batteries arranged side by side, each of which includes a vent; a monitoring assembly, disposed above the plurality of secondary batteries and including a base plate and a monitoring wire, wherein the monitoring wire is coupled to the base plate; the monitoring wire is disposed corresponding to positions of the vents of the plurality of secondary batteries, and can be broken off when any of the vents bursts, so as to monitor a state of the battery module.

Abstract: The present disclosure relates to the technical field of energy storage devices, and in particular, to a battery module and a battery pack. The battery module includes: a plurality of battery cells stacked in sequence, the plurality of battery cells being provided with vents; and a circuit board arranged above the plurality of battery cells. The circuit board is provided with a temperature sensing device, and a position of each of the temperature sensing device corresponds to positions of the vents. The temperature sensing device is connected to a battery management system to form a circuit, and the circuit is disconnected when any one of the vents is blasted.