Abstract: This application discloses a receiving drive circuit, a laser beam receiving circuit, and a LiDAR. The receiving drive circuit includes a drive voltage output module, and the drive voltage output module includes: an anode drive voltage output terminal is configured to output a negative anode drive voltage; and a cathode drive voltage output terminal, connected to a cathode of the laser beam detector in the laser beam detection module and configured to output a positive cathode drive voltage, so that the laser beam detector converts the received laser beam signal into a current signal.

Abstract: This application provides an optical device and a method of adjusting an optical device. The optical device includes an emitting assembly, a beam splitting assembly, and a receiving assembly. The emitting assembly is configured to emit an outgoing light signal. The beam splitting assembly is configured to pass the outgoing light signal from the emitting assembly to a detection region, receive a reflected light signal from the detection region, and modify a transmission direction of the reflected light signal. The receiving assembly is configured to receive the reflected light signal from the beam splitting assembly after the direction modification and generate an electrical signal in response to the reflected light signal.

Abstract: The present disclosure provides a LiDAR device and a ranging adjustment method of the same. The ranging adjustment method includes: obtaining position information of a receiving unit corresponding to a to-be-scanned emission unit, and querying a table to obtain an attenuation coefficient matching the receiving unit; calculating a number of continuous laser beam emissions or an emission power of the emission unit corresponding to the receiving unit in a frame of a scanning image based on the attenuation coefficient; driving the emission unit to emit a laser beam based on the number of emissions or the emission power, simultaneously driving the receiving unit corresponding to the emission unit to receive a corresponding echo laser beam signal, and superimposing the echo laser beam signal into corresponding histogram data; and determining distance information of a to-be-detected object based on the histogram data.

Abstract: The present application provides a lidar receiving apparatus, a lidar system, a laser ranging method, a laser ranging controller, and a computer readable storage medium. The lidar receiving apparatus includes: a photodetector, which is configured to receive a reflected laser signal and to convert the reflected laser signal into a current signal when a bias voltage of the photodetector is greater than a breakdown voltage of the same; a ranging circuit, which is connected with the photodetector and configured to calculate distance data according to the current signal; and a power control circuit, which is connected with the photodetector and configured to control the bias voltage applied to the photodetector according to a predefined rule.

Abstract: A layered convergence topology structure for a plurality of sensors is established based on a sensing range and a position relationship of at least one sensor from the sensors. A plurality of pieces of first sensed information, respectively captured through each sensor of the sensors, are divided into at least two first groups based on the layered convergence topology structure. Each piece of first sensed information in respective first group of the at least two first groups is converged to obtain at least two pieces of first converged information. The at least two pieces of first converged information are determined as at least two pieces of second sensed information for convergence to obtain second converged information. When a piece number of the second converged information is one, the second converged information is determined as target converged information.

Abstract: The present disclosure provides a multi-beam LiDAR system. The multi-beam LiDAR system includes a transmitter having an array of laser emitters. Each laser emitter is configured to emit a laser beam. The multi-beam LiDAR system also includes a receiver having an array of photodetectors. Each photodetector is configured to receive at least one return beam that is reflected by an object from one of the laser beams. The laser emitter array includes a plurality of laser emitter boards perpendicular to a horizontal plane. Each laser emitter board has a plurality of laser emitters. The plurality of laser emitters in the laser emitter array are staggered along a vertical direction. The photodetector array includes a plurality of columns of photodetectors. One of the laser emitter boards corresponds to one column of photodetectors.

Abstract: The present application discloses a laser receiving circuit and a LiDAR. The laser receiving circuit includes an amplifying circuit, a DC bias circuit, and an analog-to-digital converter. The amplifying circuit is connected to the analog-to-digital converter and configured to amplify input first voltage signals to obtain second voltage signals, and the second voltage signals are AC voltage signals. The DC bias circuit is connected to the analog-to-digital converter and configured to generate reverse DC voltage signals, and the reverse DC voltage signals and the second voltage signals are superimposed to obtain third voltage signals. The analog-to-digital converter is configured to sample the third voltage signals.

Abstract: The present disclosure provides a galvanometer motor, including a stator, a rotor, and a sensor board. The stator includes a housing and a drive coil mounted inside the housing. The rotor includes a rotating shaft and a galvanometer lens. A pair of radially magnetized magnetic poles are at the middle of the rotating shaft, two ends of the rotating shaft are rotatably mounted inside the housing, and one end of the rotating shaft extends outside the housing and is connected to the galvanometer lens. The sensor board is fixed on an inner wall of the housing and is at one end of the housing farther away from the galvanometer lens. The sensor board is mounted with one or more magnetic sensors configured to sense a magnetic field signal generated by the pair of magnetic poles, to obtain absolute positions of the rotating shaft and the galvanometer lens.

Abstract: This application discloses a laser emission module and a LIDAR. The laser emission module includes: a laser emitter, a heat conduction substrate including a first board surface, and a first support board including a third board surface facing toward the laser emitter. The first board surface is configured to connect the laser emitter. The third board surface has a mounting region. The heat conduction substrate corresponding to the mounting region is mounted on the first support board.

Abstract: This application relates to a method, circuit, and radar for detecting a register. The method for detecting the register includes: performing a signature operation on a first data to obtain a first signature; storing the first data in a data register; performing a signature operation on a second data stored in the data register, to obtain a second signature; and comparing the first signature and the second signature to detect the data register.

Abstract: The present application discloses a laser emitting circuit and a LiDAR. The laser emitting circuit includes an energy charging circuit, an energy transfer circuit, and a plurality of energy release circuits. The plurality of energy release circuits are connected in parallel. The energy charging circuit is connected to the energy transfer circuit to store electrical energy. The energy transfer circuit is connected to the energy charging circuit and the plurality of energy release circuits to transfer the electrical energy stored in the energy charging circuit to the energy transfer circuit. The energy transfer circuit includes an energy storage capacitor and a floating-ground diode. Each energy release circuit is configured to drive a laser diode to emit light by using the electrical energy stored in the energy transfer circuit, and the energy release circuit includes an energy release switch element, the laser diode, and a clamping diode.

Abstract: The present disclosure provides a LiDAR device and a ranging adjustment method of the same. The ranging adjustment method includes: turning off a laser beam emission module and turning on a laser beam receiving module, to obtain histogram data of ambient light; adjusting detection efficiency of the laser beam receiving module based on the histogram data of the ambient light; turning on the laser beam emission module and the laser beam receiving module, to obtain histogram data of a current optical signal; and comparing the histogram data of the current optical signal with the histogram data of the ambient light, and determining histogram data of an echo signal and distance information of a to-be-detected object, based on a result of the comparison.

Abstract: An opto-mechanical system is provided. The opto-mechanical system includes a light emission assembly, a light receiving assembly, and a light scanning assembly. The light emission assembly is configured to emit an emission light signal to a target object. The light receiving assembly is configured to receive an echo light signal reflected by the target object. The light scanning assembly includes a first light scanning element and a second light scanning element. The emission light signal emitted by the light emission assembly is sequentially transmitted by the first light scanning element and the second light scanning element to the target object, and the echo light signal reflected by the target object is sequentially transmitted by the second light scanning element and the first light scanning element to the light receiving assembly.

Abstract: This application provides a target detection method, a LiDAR; and a storage medium. The method includes: obtaining an echo signal, where the echo signal is obtained by sampling a reflected wave received by the LiDAR; performing a matching operation on the echo signal and a preamble signal, to obtain a valid echo signal for a target object, where the preamble signal is obtained by sampling a reflected wave corresponding to a window; determining a threshold for the valid echo signal; determining a leading edge moment and a trailing edge moment based on the threshold; and determining a distance between the LiDAR and the target object based on the leading edge moment and the trailing edge moment.

Abstract: The present application discloses an optical receiving device and an optical sensing device. The optical receiving device includes a lens assembly, a reflecting member, and a photosensitive member. The lens assembly includes at least one lens. The reflecting member is located on a transmission path of light passing through the lens assembly. The reflecting member has a reflecting surface. The reflecting surface is configured to reflect the light passing through the lens assembly. The photosensitive member has a photosensitive surface. The photosensitive surface is configured to receive light reflected by the reflecting surface. After passing through the lens assembly, a detecting echo light beam reflected back from a target object is reflected by the reflecting surface of the reflecting member, so that the light is transmitted to the photosensitive surface of the photosensitive member intensively.

Abstract: Embodiments of this application disclose a laser frequency modulation method and device, a storage medium, and a laser device. The method includes: obtaining the current sweep mode of the laser device in a timing manner; when the current sweep mode is the single-band sweep mode, controlling the laser device to perform continuous sweeping on the preset band; and when the current sweep mode is the multi-band switching mode, obtaining the next band for the laser device to perform sweeping, and controlling the laser device to switch from the band to the next band.

Abstract: A laser receiving circuit and a LiDAR are provided. The laser receiving circuit includes a controller, a voltage switching circuit, n voltage sources, and a receiving sensor. The voltage switching circuit includes a control terminal, n power source input terminals, and a power source output terminal. The n voltage sources generate reverse bias signals of different voltage values, respectively, and are connected to the n power source input terminals in a one-to-one manner. The controller is connected to the control terminal of the voltage switching circuit and is configured to send voltage switching signals to the voltage switching circuit via the control terminal. The power source output terminal is connected to a cathode of the receiving sensor. The voltage switching circuit is configured to select one power source input terminal from the n power source input terminals to be turned on, in response to the voltage switching signals.

Abstract: The present application discloses an optical signal processing circuit for a Lidar. The optical signal processing circuit includes an optical processing circuit, a gain control circuit connected to the optical processing circuit, and a controller connected to the gain control circuit. The optical processing circuit includes an optical sensor and an amplification circuit. The optical sensor is configured to convert an optical signal to a photocurrent signal, and the amplification circuit is configured to convert and amplify the photocurrent signal to a voltage signal. The controller adjusts a gain of the optical processing circuit via the gain control circuit and based on an amplitude of the voltage signal.

Abstract: A detection circuit of clock anomaly and method, a clock circuit, a chip, and a radar are provided. The detection circuit of clock anomaly includes: a first clock frequency determining unit, configured to determine a first clock frequency of a received first clock signal; a reference determining unit, configured to determine a reference corresponding to the first clock signal, where the reference is determined based on a second clock signal or a timestamp; and a clock anomaly detection unit, connected to the first clock frequency determining unit and the reference determining unit separately and configured to perform anomaly detection on the first clock signal based on the first clock frequency and the reference. This application can improve reliability of the clock signal, thereby improving personal safety and property safety of a user.

Abstract: A lidar and an intelligent sensing device are provided. The lidar includes at least one counterweight tray connected with a portion of the lidar. Each of the at least one counterweight tray includes a counterweight edge having a ring shape. The counterweight edge includes a plurality of fixing holes. A counterweight block is moved relative to the counterweight edge to be fixed through the plurality of fixing holes, thereby achieving a balance adjustment of the lidar.