Ran, Handong

A single-photon avalanche diode array, a receiving sensor and a LiDAR are provided, wherein at least two SPAD units are arranged in an array, a micro lens converges the incident light onto the corresponding SPAD unit, a back metal grid connects the SPAD unit with the corresponding external electrode, a first dielectric layer is arranged between the micro lens and the SPAD unit, a second dielectric layer is arranged between the SPAD unit and a front metal wiring layer, and the front metal wiring layer is electrically connected to the corresponding SPAD unit through a contact metal wire. By arranging deep groove separation columns between adjacent SPAD units, thereby reducing the probability of photon crosstalk and reducing the optical crosstalk of the device.

The present application provides an echo signal processing method. The method includes: acquiring single histograms obtained from at least two scans; acquiring a superimposed histogram according to the single histograms; respectively extracting echo information of the superimposed histogram and echo information of target single histograms; calculating an echo similarity of each echo in the superimposed histogram and an echo similarity of corresponding echoes between the target single histograms according to the echo information of the superimposed histogram and the echo information of the target single histograms; determining an echo confidence level of each echo in the superimposed histogram according to the echo similarity of the echoes in the superimposed histogram and the echo similarity between the target single histograms; and identifying a valid echo according to the echo confidence level of the echo. This improves the identification accuracy of a radar system for noise signals and crosstalk echoes.

An emission module (1) includes a carrier board (11) and a light-emitting module (12) having a first subgroup (12A) and a second subgroup (12B). The first subgroup comprises at least two first emission units (121), at least one first drive unit (122), and at least one first energy storage unit (123). The first drive unit drives the at least two first emission units to emit laser light using energy stored in the first energy storage unit. The second subgroup comprises at least two second emission units (124), at least one second drive unit (125), and at least one second energy storage unit (126). The second drive unit drives the at least two second emission units to emit laser light using energy stored in the second energy storage unit. The first emission units and the second emission units are arranged in a staggered manner along a second direction. A single drive unit concurrently drives multiple emission units, compressing the light-emitting module's volume.

A LiDAR and an autonomous driving device are provided. The LiDAR includes a transceiver module and a rotating mirror. The transceiver module includes a transmitting unit, a receiving unit, a first housing, a second housing, and a plane mirror. The first housing includes a receiving cylinder and a transmitting cylinder. The second housing includes a first sub-housing and a second sub-housing. The transmitting cylinder and the first sub-housing form a transmitting channel, and the receiving cylinder and the second sub-housing form a receiving channel. The first sub-housing includes a first opening. The second sub-housing includes a second opening and a first boss. The plane mirror is fixed to the first opening, and the first boss extends from a first end of the second opening to a second end of the second opening.

An azimuth angle calibration method for a LiDAR, an azimuth angle calibration apparatus, and a LiDAR are disclosed. The method includes acquiring calibration point cloud data comprising at least one frame of point cloud data from the LiDAR. A measured azimuth angle is determined based on the calibration point cloud data, where the measured azimuth angle corresponds to a calibration zone. A compensation coefficient is calculated using the measured azimuth angle and a preset angle value. Angle compensation is then applied to azimuth angle information of detection point cloud data based on the compensation coefficient, wherein the detection point cloud data is generated during LiDAR operation. This method improves control accuracy in LiDAR scanning processes by compensating for directional angle errors.

A distance measurement method, applied to a data processing module coupled to a receiving module, includes: determining a plurality of received data based on an echo signal received by the receiving module, wherein the echo signal is reflected by a target object after a transmitting module emits a laser pulse toward the target object, and the received data are derived from an electrical signal output by the receiving module in response to the echo signal; organizing the received data into N data groups, each group comprising at least one received data, with at least two groups sharing partially identical received data, where N is an integer greater than or equal to 2; and computing a distance measurement result for each data group based on its respective received data. This method enhances distance measurement capability without requiring changes to radar hardware configuration.

A device body and an electronic atomization device are provided, including a first housing with a first liquid storage cavity; an atomization core disposed in the first housing; and a second housing, independent of the first housing and with a second liquid storage cavity for storing a liquid substrate. The second housing is connectable to the first housing, establishing a connection channel between the two cavities for flow of liquid substrate and/or air. The connection channel includes a first section adjacent to and in communication with the second cavity and at least one second section in communication with the first section. The second section is adjacent to and in communication with the first cavity. The cross-sectional area of the first section is greater than that of the second section. This design allows air bubbles in the connection channel to be easily removed, preventing from blockage and ensuring timely liquid supply.

A distance and reflectivity measurement method, apparatus, storage medium, and lidar are disclosed. The lidar acquires an echo signal from light reflected by a target object. A distance threshold measures the echo signal to determine the target's distance relative to the lidar. A reflectivity threshold, higher than the distance threshold, measures the echo signal to determine the target's reflectivity. Using separate thresholds, with the reflectivity threshold being higher, provides high accuracy for distance measurement and high differentiation for reflectivity measurement, improving the overall accuracy of calculating both distance and reflectivity for the target object.

Embodiments of the present application provide an electrode assembly, a battery cell, a battery, and a method and a device for manufacturing an electrode assembly, which belong to the technical field of batteries. Where, the electrode assembly includes a first electrode plate, a second electrode plate, and a support member. The first electrode plate and the second electrode plate are wound in a winding direction to form a winding structure, and the winding structure includes a bending area. At least a part of the support member is bent and arranged in the bending area, and the support member is configured to provide a support force to a part of the first electrode plate and/or the second electrode plate located at an outer side of the support member. The support member can provide a support force to the part of the first electrode plate and/or the second electrode plate located at the outer sided of the support member, that is, the support member can provide a support force to an electrode plate located at the outer side of the support member, so that the electrode plate at the outer side of the support member is not easy to shrink and deform inward, the structural stability of the entire electrode assembly is improved, and the battery performance is ensured.

Provided in the embodiments of the present application are a power management system, an MCU, a BMS and a battery, which can satisfy the power supply requirements of the MCU, and achieve a higher reliability. The power management system comprises: a primary power supply module, which is connected to a power source, and is used for generating a first voltage according to the voltage of the power source, diagnosing the first voltage, and storing a diagnosis result of the first voltage; and a secondary power supply module, which is connected to the primary power supply module and is used for generating a second voltage according to the first voltage, wherein the second voltage is less than the first voltage, and the second voltage is an operating voltage of an MCU; and the MCU, which is connected to the primary power supply module and the secondary power supply module, and is used for reading the diagnosis result of the first voltage from the primary power supply module and determining, according to the diagnosis result of the first voltage, whether to control a BMS to enter a safe state.